1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 92-97, 1998 Free Software Foundation, Inc.
3 Contributed 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. */
45 #define obstack_chunk_alloc xmalloc
46 #define obstack_chunk_free free
48 extern tree builtin_return_address_fndecl
;
50 extern struct obstack permanent_obstack
;
51 extern struct obstack
* saveable_obstack
;
53 extern int current_class_depth
;
55 extern tree static_ctors
, static_dtors
;
57 extern int static_labelno
;
59 extern tree current_namespace
;
60 extern tree global_namespace
;
62 extern void (*print_error_function
) PROTO((char *));
64 /* Stack of places to restore the search obstack back to. */
66 /* Obstack used for remembering local class declarations (like
67 enums and static (const) members. */
69 struct obstack decl_obstack
;
70 static struct stack_level
*decl_stack
;
72 #ifndef CHAR_TYPE_SIZE
73 #define CHAR_TYPE_SIZE BITS_PER_UNIT
76 #ifndef SHORT_TYPE_SIZE
77 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
81 #define INT_TYPE_SIZE BITS_PER_WORD
84 #ifndef LONG_TYPE_SIZE
85 #define LONG_TYPE_SIZE BITS_PER_WORD
88 #ifndef LONG_LONG_TYPE_SIZE
89 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
92 #ifndef WCHAR_UNSIGNED
93 #define WCHAR_UNSIGNED 0
96 #ifndef FLOAT_TYPE_SIZE
97 #define FLOAT_TYPE_SIZE BITS_PER_WORD
100 #ifndef DOUBLE_TYPE_SIZE
101 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
104 #ifndef LONG_DOUBLE_TYPE_SIZE
105 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
108 #ifndef BOOL_TYPE_SIZE
109 #ifdef SLOW_BYTE_ACCESS
110 #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE))
112 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
116 /* We let tm.h override the types used here, to handle trivial differences
117 such as the choice of unsigned int or long unsigned int for size_t.
118 When machines start needing nontrivial differences in the size type,
119 it would be best to do something here to figure out automatically
120 from other information what type to use. */
123 #define SIZE_TYPE "long unsigned int"
127 #define PTRDIFF_TYPE "long int"
131 #define WCHAR_TYPE "int"
134 static tree grokparms
PROTO((tree
, int));
135 static tree lookup_nested_type
PROTO((tree
, tree
));
136 static char *redeclaration_error_message
PROTO((tree
, tree
));
137 static tree push_overloaded_decl
PROTO((tree
, int));
139 static struct stack_level
*push_decl_level
PROTO((struct stack_level
*,
141 static void push_binding_level
PROTO((struct binding_level
*, int,
143 static void pop_binding_level
PROTO((void));
144 static void suspend_binding_level
PROTO((void));
145 static void resume_binding_level
PROTO((struct binding_level
*));
146 static struct binding_level
*make_binding_level
PROTO((void));
147 static int namespace_bindings_p
PROTO((void));
148 static void declare_namespace_level
PROTO((void));
149 static void signal_catch
PROTO((int));
150 static void storedecls
PROTO((tree
));
151 static void storetags
PROTO((tree
));
152 static void require_complete_types_for_parms
PROTO((tree
));
153 static void push_overloaded_decl_1
PROTO((tree
));
154 static int ambi_op_p
PROTO((tree
));
155 static int unary_op_p
PROTO((tree
));
156 static tree store_bindings
PROTO((tree
, tree
));
157 static tree lookup_tag_reverse
PROTO((tree
, tree
));
158 static tree obscure_complex_init
PROTO((tree
, tree
));
159 static tree maybe_build_cleanup_1
PROTO((tree
, tree
));
160 static tree lookup_name_real
PROTO((tree
, int, int, int));
161 static void warn_extern_redeclared_static
PROTO((tree
, tree
));
162 static void grok_reference_init
PROTO((tree
, tree
, tree
));
163 static tree grokfndecl
PROTO((tree
, tree
, tree
, tree
, int,
164 enum overload_flags
, tree
,
165 tree
, tree
, int, int, int, int, int, int, tree
));
166 static tree grokvardecl
PROTO((tree
, tree
, RID_BIT_TYPE
*, int, int, tree
));
167 static tree lookup_tag
PROTO((enum tree_code
, tree
,
168 struct binding_level
*, int));
169 static void set_identifier_type_value_with_scope
170 PROTO((tree
, tree
, struct binding_level
*));
171 static void set_identifier_local_value_with_scope
172 PROTO((tree
, tree
, struct binding_level
*));
173 static void record_builtin_type
PROTO((enum rid
, char *, tree
));
174 static void record_unknown_type
PROTO((tree
, char *));
175 static int member_function_or_else
PROTO((tree
, tree
, char *));
176 static void bad_specifiers
PROTO((tree
, char *, int, int, int, int,
178 static void lang_print_error_function
PROTO((char *));
179 static tree maybe_process_template_type_declaration
PROTO((tree
, int, struct binding_level
*));
181 #if defined (DEBUG_CP_BINDING_LEVELS)
182 static void indent
PROTO((void));
185 /* A node which has tree code ERROR_MARK, and whose type is itself.
186 All erroneous expressions are replaced with this node. All functions
187 that accept nodes as arguments should avoid generating error messages
188 if this node is one of the arguments, since it is undesirable to get
189 multiple error messages from one error in the input. */
191 tree error_mark_node
;
193 /* Erroneous argument lists can use this *IFF* they do not modify it. */
194 tree error_mark_list
;
196 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
198 tree short_integer_type_node
;
199 tree integer_type_node
;
200 tree long_integer_type_node
;
201 tree long_long_integer_type_node
;
203 tree short_unsigned_type_node
;
204 tree unsigned_type_node
;
205 tree long_unsigned_type_node
;
206 tree long_long_unsigned_type_node
;
208 tree ptrdiff_type_node
;
210 tree unsigned_char_type_node
;
211 tree signed_char_type_node
;
213 tree wchar_type_node
;
214 tree signed_wchar_type_node
;
215 tree unsigned_wchar_type_node
;
217 tree wchar_decl_node
;
219 tree float_type_node
;
220 tree double_type_node
;
221 tree long_double_type_node
;
223 tree complex_integer_type_node
;
224 tree complex_float_type_node
;
225 tree complex_double_type_node
;
226 tree complex_long_double_type_node
;
228 tree intQI_type_node
;
229 tree intHI_type_node
;
230 tree intSI_type_node
;
231 tree intDI_type_node
;
232 tree intTI_type_node
;
234 tree unsigned_intQI_type_node
;
235 tree unsigned_intHI_type_node
;
236 tree unsigned_intSI_type_node
;
237 tree unsigned_intDI_type_node
;
238 tree unsigned_intTI_type_node
;
240 tree java_byte_type_node
;
241 tree java_short_type_node
;
242 tree java_int_type_node
;
243 tree java_long_type_node
;
244 tree java_float_type_node
;
245 tree java_double_type_node
;
246 tree java_char_type_node
;
247 tree java_boolean_type_node
;
249 /* A VOID_TYPE node, and the same, packaged in a TREE_LIST. */
251 tree void_type_node
, void_list_node
;
254 /* Nodes for types `void *' and `const void *'. */
257 tree const_ptr_type_node
;
259 /* Nodes for types `char *' and `const char *'. */
261 tree string_type_node
, const_string_type_node
;
263 /* Type `char[256]' or something like it.
264 Used when an array of char is needed and the size is irrelevant. */
266 tree char_array_type_node
;
268 /* Type `int[256]' or something like it.
269 Used when an array of int needed and the size is irrelevant. */
271 tree int_array_type_node
;
273 /* Type `wchar_t[256]' or something like it.
274 Used when a wide string literal is created. */
276 tree wchar_array_type_node
;
278 /* The bool data type, and constants */
279 tree boolean_type_node
, boolean_true_node
, boolean_false_node
;
281 /* Type `int ()' -- used for implicit declaration of functions. */
283 tree default_function_type
;
285 /* Function types `double (double)' and `double (double, double)', etc. */
287 static tree double_ftype_double
, double_ftype_double_double
;
288 static tree int_ftype_int
, long_ftype_long
;
289 static tree float_ftype_float
;
290 static tree ldouble_ftype_ldouble
;
292 /* Function type `int (const void *, const void *, size_t)' */
293 static tree int_ftype_cptr_cptr_sizet
;
296 tree vtable_entry_type
;
297 tree delta_type_node
;
299 /* Old rtti stuff. */
300 tree __baselist_desc_type_node
;
301 tree __i_desc_type_node
, __m_desc_type_node
;
302 tree __t_desc_array_type
, __i_desc_array_type
, __m_desc_array_type
;
304 tree __t_desc_type_node
;
306 tree __tp_desc_type_node
;
308 tree __access_mode_type_node
;
309 tree __bltn_desc_type_node
, __user_desc_type_node
, __class_desc_type_node
;
310 tree __ptr_desc_type_node
, __attr_desc_type_node
, __func_desc_type_node
;
311 tree __ptmf_desc_type_node
, __ptmd_desc_type_node
;
313 /* Not needed yet? May be needed one day? */
314 tree __bltn_desc_array_type
, __user_desc_array_type
, __class_desc_array_type
;
315 tree __ptr_desc_array_type
, __attr_dec_array_type
, __func_desc_array_type
;
316 tree __ptmf_desc_array_type
, __ptmd_desc_array_type
;
319 /* Indicates that there is a type value in some namespace, although
320 that is not necessarily in scope at the moment. */
322 static tree global_type_node
;
324 tree class_star_type_node
;
325 tree class_type_node
, record_type_node
, union_type_node
, enum_type_node
;
326 tree unknown_type_node
;
327 tree opaque_type_node
, signature_type_node
;
328 tree sigtable_entry_type
;
330 /* Array type `vtable_entry_type[]' */
337 /* Expect only namespace names now. */
338 static int only_namespace_names
;
340 /* In a destructor, the point at which all derived class destroying
341 has been done, just before any base class destroying will be done. */
345 /* In a destructor, the last insn emitted after the start of the
346 function and the parms. */
348 static rtx last_dtor_insn
;
350 /* In a constructor, the last insn emitted after the start of the
351 function and the parms, the exception specification and any
352 function-try-block. The constructor initializers are emitted after
355 static rtx last_parm_cleanup_insn
;
357 /* In a constructor, the point at which we are ready to return
358 the pointer to the initialized object. */
362 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
363 one that the user will declare, but sufficient to be called
364 by routines that want to abort the program. */
368 extern rtx cleanup_label
, return_label
;
370 /* If original DECL_RESULT of current function was a register,
371 but due to being an addressable named return value, would up
372 on the stack, this variable holds the named return value's
373 original location. */
374 static rtx original_result_rtx
;
376 /* Sequence of insns which represents base initialization. */
379 /* C++: Keep these around to reduce calls to `get_identifier'.
380 Identifiers for `this' in member functions and the auto-delete
381 parameter for destructors. */
382 tree this_identifier
, in_charge_identifier
;
383 tree ctor_identifier
, dtor_identifier
;
384 /* Used in pointer to member functions, in vtables, and in sigtables. */
385 tree pfn_identifier
, index_identifier
, delta_identifier
, delta2_identifier
;
386 tree pfn_or_delta2_identifier
, tag_identifier
;
387 tree vt_off_identifier
;
389 struct named_label_list
391 struct binding_level
*binding_level
;
394 char *filename_o_goto
;
396 struct named_label_list
*next
;
399 /* A list (chain of TREE_LIST nodes) of named label uses.
400 The TREE_PURPOSE field is the list of variables defined
401 in the label's scope defined at the point of use.
402 The TREE_VALUE field is the LABEL_DECL used.
403 The TREE_TYPE field holds `current_binding_level' at the
404 point of the label's use.
406 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
408 Look at the pretty struct named_label_list. See the pretty struct
409 with the pretty named fields that describe what they do. See the
410 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
412 Used only for jumps to as-yet undefined labels, since
413 jumps to defined labels can have their validity checked
416 static struct named_label_list
*named_label_uses
= NULL
;
418 /* A list of objects which have constructors or destructors
419 which reside in the global scope. The decl is stored in
420 the TREE_VALUE slot and the initializer is stored
421 in the TREE_PURPOSE slot. */
422 tree static_aggregates
;
426 /* Two expressions that are constants with value zero.
427 The first is of type `int', the second of type `void *'. */
429 tree integer_zero_node
;
430 tree null_pointer_node
;
432 /* The value for __null (NULL), namely, a zero of an integer type with
433 the same number of bits as a pointer. */
436 /* A node for the integer constants 1, 2, and 3. */
438 tree integer_one_node
, integer_two_node
, integer_three_node
;
440 /* While defining an enum type, this is 1 plus the last enumerator
443 static tree enum_next_value
;
445 /* Nonzero means that there was overflow computing enum_next_value. */
447 static int enum_overflow
;
449 /* Parsing a function declarator leaves a list of parameter names
450 or a chain or parameter decls here. */
452 tree last_function_parms
;
454 /* Parsing a function declarator leaves here a chain of structure
455 and enum types declared in the parmlist. */
457 static tree last_function_parm_tags
;
459 /* After parsing the declarator that starts a function definition,
460 `start_function' puts here the list of parameter names or chain of decls.
461 `store_parm_decls' finds it here. */
463 static tree current_function_parms
;
465 /* Similar, for last_function_parm_tags. */
466 static tree current_function_parm_tags
;
468 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
469 that have names. Here so we can clear out their names' definitions
470 at the end of the function. */
472 static tree named_labels
;
474 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
476 static tree shadowed_labels
;
478 /* The FUNCTION_DECL for the function currently being compiled,
479 or 0 if between functions. */
480 tree current_function_decl
;
482 /* Set to 0 at beginning of a function definition, set to 1 if
483 a return statement that specifies a return value is seen. */
485 int current_function_returns_value
;
487 /* Set to 0 at beginning of a function definition, set to 1 if
488 a return statement with no argument is seen. */
490 int current_function_returns_null
;
492 /* Set to 0 at beginning of a function definition, and whenever
493 a label (case or named) is defined. Set to value of expression
494 returned from function when that value can be transformed into
495 a named return value. */
497 tree current_function_return_value
;
499 /* Set to nonzero by `grokdeclarator' for a function
500 whose return type is defaulted, if warnings for this are desired. */
502 static int warn_about_return_type
;
504 /* Nonzero means give `double' the same size as `float'. */
506 extern int flag_short_double
;
508 /* Nonzero means don't recognize any builtin functions. */
510 extern int flag_no_builtin
;
512 /* Nonzero means don't recognize the non-ANSI builtin functions.
515 extern int flag_no_nonansi_builtin
;
517 /* Nonzero means enable obscure ANSI features and disable GNU extensions
518 that might cause ANSI-compliant code to be miscompiled. */
520 extern int flag_ansi
;
522 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
524 extern int flag_huge_objects
;
526 /* Nonzero if we want to conserve space in the .o files. We do this
527 by putting uninitialized data and runtime initialized data into
528 .common instead of .data at the expense of not flagging multiple
530 extern int flag_conserve_space
;
532 /* Pointers to the base and current top of the language name stack. */
534 extern tree
*current_lang_base
, *current_lang_stack
;
536 /* C and C++ flags are in decl2.c. */
538 /* Set to 0 at beginning of a constructor, set to 1
539 if that function does an allocation before referencing its
540 instance variable. */
541 static int current_function_assigns_this
;
542 int current_function_just_assigned_this
;
544 /* Set to 0 at beginning of a function. Set non-zero when
545 store_parm_decls is called. Don't call store_parm_decls
546 if this flag is non-zero! */
547 int current_function_parms_stored
;
549 /* Flag used when debugging spew.c */
551 extern int spew_debug
;
553 /* This is a copy of the class_shadowed list of the previous class binding
554 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
555 when entering another class scope (i.e. a cache miss). */
556 extern tree previous_class_values
;
558 /* A expression of value 0 with the same precision as a sizetype
560 tree signed_size_zero_node
;
562 /* The name of the anonymous namespace, throughout this translation
564 tree anonymous_namespace_name
;
567 /* Allocate a level of searching. */
571 push_decl_level (stack
, obstack
)
572 struct stack_level
*stack
;
573 struct obstack
*obstack
;
575 struct stack_level tem
;
578 return push_stack_level (obstack
, (char *)&tem
, sizeof (tem
));
581 /* For each binding contour we allocate a binding_level structure
582 which records the names defined in that contour.
585 1) one for each function definition,
586 where internal declarations of the parameters appear.
587 2) one for each compound statement,
588 to record its declarations.
590 The current meaning of a name can be found by searching the levels
591 from the current one out to the global one.
593 Off to the side, may be the class_binding_level. This exists only
594 to catch class-local declarations. It is otherwise nonexistent.
596 Also there may be binding levels that catch cleanups that must be
597 run when exceptions occur. */
599 /* Note that the information in the `names' component of the global contour
600 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
604 /* A chain of _DECL nodes for all variables, constants, functions,
605 and typedef types. These are in the reverse of the order
609 /* A list of structure, union and enum definitions, for looking up
611 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
612 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
613 or ENUMERAL_TYPE node.
615 C++: the TREE_VALUE nodes can be simple types for
616 component_bindings. */
619 /* A list of USING_DECL nodes. */
622 /* A list of used namespaces. PURPOSE is the namespace,
623 VALUE the common ancestor with this binding_level's namespace. */
624 tree using_directives
;
626 /* For each level, a list of shadowed outer-level local definitions
627 to be restored when this level is popped.
628 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
629 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
632 /* Same, for IDENTIFIER_CLASS_VALUE. */
635 /* Same, for IDENTIFIER_TYPE_VALUE. */
638 /* For each level (except not the global one),
639 a chain of BLOCK nodes for all the levels
640 that were entered and exited one level down. */
643 /* The BLOCK node for this level, if one has been preallocated.
644 If 0, the BLOCK is allocated (if needed) when the level is popped. */
647 /* The binding level which this one is contained in (inherits from). */
648 struct binding_level
*level_chain
;
650 /* List of decls in `names' that have incomplete
651 structure or union types. */
654 /* List of VAR_DECLS saved from a previous for statement.
655 These would be dead in ANSI-conforming code, but might
656 be referenced in ARM-era code. */
657 tree dead_vars_from_for
;
659 /* 1 for the level that holds the parameters of a function.
660 2 for the level that holds a class declaration.
661 3 for levels that hold parameter declarations. */
662 unsigned parm_flag
: 4;
664 /* 1 means make a BLOCK for this level regardless of all else.
665 2 for temporary binding contours created by the compiler. */
668 /* Nonzero if this level "doesn't exist" for tags. */
669 unsigned tag_transparent
: 1;
671 /* Nonzero if this level can safely have additional
672 cleanup-needing variables added to it. */
673 unsigned more_cleanups_ok
: 1;
674 unsigned have_cleanups
: 1;
676 /* Nonzero if this level is for storing the decls for template
677 parameters and generic decls; these decls will be discarded and
678 replaced with a TEMPLATE_DECL. */
679 unsigned pseudo_global
: 1;
681 /* This is set for a namespace binding level. */
682 unsigned namespace_p
: 1;
684 /* True if this level is that of a for-statement where we need to
685 worry about ambiguous (ARM or ANSI) scope rules. */
686 unsigned is_for_scope
: 1;
688 /* Two bits left for this word. */
690 #if defined(DEBUG_CP_BINDING_LEVELS)
691 /* Binding depth at which this level began. */
692 unsigned binding_depth
;
693 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
696 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
698 /* The (non-class) binding level currently in effect. */
700 static struct binding_level
*current_binding_level
;
702 /* The binding level of the current class, if any. */
704 static struct binding_level
*class_binding_level
;
706 /* The current (class or non-class) binding level currently in effect. */
708 #define inner_binding_level \
709 (class_binding_level ? class_binding_level : current_binding_level)
711 /* A chain of binding_level structures awaiting reuse. */
713 static struct binding_level
*free_binding_level
;
715 /* The outermost binding level, for names of file scope.
716 This is created when the compiler is started and exists
717 through the entire run. */
719 static struct binding_level
*global_binding_level
;
721 /* Binding level structures are initialized by copying this one. */
723 static struct binding_level clear_binding_level
;
725 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
727 static int keep_next_level_flag
;
729 #if defined(DEBUG_CP_BINDING_LEVELS)
730 static int binding_depth
= 0;
731 static int is_class_level
= 0;
738 for (i
= 0; i
< binding_depth
*2; i
++)
741 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
743 static tree pushdecl_with_scope
PROTO((tree
, struct binding_level
*));
746 push_binding_level (newlevel
, tag_transparent
, keep
)
747 struct binding_level
*newlevel
;
748 int tag_transparent
, keep
;
750 /* Add this level to the front of the chain (stack) of levels that
752 *newlevel
= clear_binding_level
;
753 if (class_binding_level
)
755 newlevel
->level_chain
= class_binding_level
;
756 class_binding_level
= (struct binding_level
*)0;
760 newlevel
->level_chain
= current_binding_level
;
762 current_binding_level
= newlevel
;
763 newlevel
->tag_transparent
= tag_transparent
;
764 newlevel
->more_cleanups_ok
= 1;
765 newlevel
->keep
= keep
;
766 #if defined(DEBUG_CP_BINDING_LEVELS)
767 newlevel
->binding_depth
= binding_depth
;
769 fprintf (stderr
, "push %s level 0x%08x line %d\n",
770 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
773 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
779 if (class_binding_level
)
780 current_binding_level
= class_binding_level
;
782 if (global_binding_level
)
784 /* Cannot pop a level, if there are none left to pop. */
785 if (current_binding_level
== global_binding_level
)
786 my_friendly_abort (123);
788 /* Pop the current level, and free the structure for reuse. */
789 #if defined(DEBUG_CP_BINDING_LEVELS)
792 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
793 (is_class_level
) ? "class" : "block",
794 current_binding_level
, lineno
);
795 if (is_class_level
!= (current_binding_level
== class_binding_level
))
798 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
801 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
803 register struct binding_level
*level
= current_binding_level
;
804 current_binding_level
= current_binding_level
->level_chain
;
805 level
->level_chain
= free_binding_level
;
806 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
807 if (level
->binding_depth
!= binding_depth
)
809 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
810 free_binding_level
= level
;
812 class_binding_level
= current_binding_level
;
813 if (class_binding_level
->parm_flag
!= 2)
814 class_binding_level
= 0;
815 while (current_binding_level
->parm_flag
== 2)
816 current_binding_level
= current_binding_level
->level_chain
;
821 suspend_binding_level ()
823 if (class_binding_level
)
824 current_binding_level
= class_binding_level
;
826 if (global_binding_level
)
828 /* Cannot suspend a level, if there are none left to suspend. */
829 if (current_binding_level
== global_binding_level
)
830 my_friendly_abort (123);
832 /* Suspend the current level. */
833 #if defined(DEBUG_CP_BINDING_LEVELS)
836 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
837 (is_class_level
) ? "class" : "block",
838 current_binding_level
, lineno
);
839 if (is_class_level
!= (current_binding_level
== class_binding_level
))
842 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
845 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
847 current_binding_level
= current_binding_level
->level_chain
;
848 class_binding_level
= current_binding_level
;
849 if (class_binding_level
->parm_flag
!= 2)
850 class_binding_level
= 0;
851 while (current_binding_level
->parm_flag
== 2)
852 current_binding_level
= current_binding_level
->level_chain
;
857 resume_binding_level (b
)
858 struct binding_level
*b
;
860 /* Resuming binding levels is meant only for namespaces,
861 and those cannot nest into classes. */
862 my_friendly_assert(!class_binding_level
, 386);
863 /* Also, resuming a non-directly nested namespace is a no-no. */
864 my_friendly_assert(b
->level_chain
== current_binding_level
, 386);
865 current_binding_level
= b
;
866 #if defined(DEBUG_CP_BINDING_LEVELS)
867 b
->binding_depth
= binding_depth
;
869 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
870 (is_class_level
) ? "class" : "block", b
, lineno
);
873 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
876 /* Create a new `struct binding_level'. */
879 struct binding_level
*
880 make_binding_level ()
883 return (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
886 /* Nonzero if we are currently in the global binding level. */
891 return current_binding_level
== global_binding_level
;
894 /* Nonzero if we are currently in a toplevel binding level. This
895 means either the global binding level or a namespace in a toplevel
897 Since there are no non-toplevel namespace levels, this really
898 means any namespace or pseudo-global level. */
901 toplevel_bindings_p ()
903 return current_binding_level
->namespace_p
904 || current_binding_level
->pseudo_global
;
907 /* Nonzero if this is a namespace scope. */
910 namespace_bindings_p ()
912 return current_binding_level
->namespace_p
;
918 keep_next_level_flag
= 1;
921 /* Nonzero if the current level needs to have a BLOCK made. */
926 return (current_binding_level
->blocks
!= NULL_TREE
927 || current_binding_level
->keep
928 || current_binding_level
->names
!= NULL_TREE
929 || (current_binding_level
->tags
!= NULL_TREE
930 && !current_binding_level
->tag_transparent
));
933 /* Identify this binding level as a level of parameters. */
936 declare_parm_level ()
938 current_binding_level
->parm_flag
= 1;
942 declare_pseudo_global_level ()
944 current_binding_level
->pseudo_global
= 1;
948 declare_namespace_level ()
950 current_binding_level
->namespace_p
= 1;
954 pseudo_global_level_p ()
956 return current_binding_level
->pseudo_global
;
960 set_class_shadows (shadows
)
963 class_binding_level
->class_shadowed
= shadows
;
966 /* Enter a new binding level.
967 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
968 not for that of tags. */
971 pushlevel (tag_transparent
)
974 register struct binding_level
*newlevel
= NULL_BINDING_LEVEL
;
976 /* If this is the top level of a function,
977 just make sure that NAMED_LABELS is 0.
978 They should have been set to 0 at the end of the previous function. */
980 if (current_binding_level
== global_binding_level
)
981 my_friendly_assert (named_labels
== NULL_TREE
, 134);
983 /* Reuse or create a struct for this binding level. */
985 #if defined(DEBUG_CP_BINDING_LEVELS)
987 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
988 if (free_binding_level
)
989 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
991 newlevel
= free_binding_level
;
992 free_binding_level
= free_binding_level
->level_chain
;
996 newlevel
= make_binding_level ();
999 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
1000 GNU_xref_start_scope ((HOST_WIDE_INT
) newlevel
);
1001 keep_next_level_flag
= 0;
1005 note_level_for_for ()
1007 current_binding_level
->is_for_scope
= 1;
1011 pushlevel_temporary (tag_transparent
)
1012 int tag_transparent
;
1014 pushlevel (tag_transparent
);
1015 current_binding_level
->keep
= 2;
1018 /* Note we don't call push_momentary() here. Otherwise, it would cause
1019 cleanups to be allocated on the momentary obstack, and they will be
1020 overwritten by the next statement. */
1022 expand_start_bindings (0);
1025 /* Exit a binding level.
1026 Pop the level off, and restore the state of the identifier-decl mappings
1027 that were in effect when this level was entered.
1029 If KEEP == 1, this level had explicit declarations, so
1030 and create a "block" (a BLOCK node) for the level
1031 to record its declarations and subblocks for symbol table output.
1033 If KEEP == 2, this level's subblocks go to the front,
1034 not the back of the current binding level. This happens,
1035 for instance, when code for constructors and destructors
1036 need to generate code at the end of a function which must
1037 be moved up to the front of the function.
1039 If FUNCTIONBODY is nonzero, this level is the body of a function,
1040 so create a block as if KEEP were set and also clear out all
1043 If REVERSE is nonzero, reverse the order of decls before putting
1044 them into the BLOCK. */
1047 poplevel (keep
, reverse
, functionbody
)
1053 /* The chain of decls was accumulated in reverse order.
1054 Put it into forward order, just for cleanliness. */
1056 int tmp
= functionbody
;
1057 int real_functionbody
= current_binding_level
->keep
== 2
1058 ? ((functionbody
= 0), tmp
) : functionbody
;
1059 tree tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
1060 tree subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
1061 tree block
= NULL_TREE
;
1063 int block_previously_created
;
1065 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
1066 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
1067 current_binding_level
->parm_flag
,
1068 current_binding_level
->keep
);
1070 if (current_binding_level
->keep
== 1)
1073 /* Get the decls in the order they were written.
1074 Usually current_binding_level->names is in reverse order.
1075 But parameter decls were previously put in forward order. */
1078 current_binding_level
->names
1079 = decls
= nreverse (current_binding_level
->names
);
1081 decls
= current_binding_level
->names
;
1083 /* Output any nested inline functions within this block
1084 if they weren't already output. */
1086 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1087 if (TREE_CODE (decl
) == FUNCTION_DECL
1088 && ! TREE_ASM_WRITTEN (decl
)
1089 && DECL_INITIAL (decl
) != NULL_TREE
1090 && TREE_ADDRESSABLE (decl
)
1091 && decl_function_context (decl
) == current_function_decl
)
1093 /* If this decl was copied from a file-scope decl
1094 on account of a block-scope extern decl,
1095 propagate TREE_ADDRESSABLE to the file-scope decl. */
1096 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1097 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1100 push_function_context ();
1101 output_inline_function (decl
);
1102 pop_function_context ();
1106 /* If there were any declarations or structure tags in that level,
1107 or if this level is a function body,
1108 create a BLOCK to record them for the life of this function. */
1111 block_previously_created
= (current_binding_level
->this_block
!= NULL_TREE
);
1112 if (block_previously_created
)
1113 block
= current_binding_level
->this_block
;
1114 else if (keep
== 1 || functionbody
)
1115 block
= make_node (BLOCK
);
1116 if (block
!= NULL_TREE
)
1118 if (block_previously_created
)
1120 if (decls
|| tags
|| subblocks
)
1122 if (BLOCK_VARS (block
) || BLOCK_TYPE_TAGS (block
))
1124 warning ("internal compiler error: debugging info corrupted");
1126 BLOCK_VARS (block
) = decls
;
1127 BLOCK_TYPE_TAGS (block
) = tags
;
1129 /* We can have previous subblocks and new subblocks when
1130 doing fixup_gotos with complex cleanups. We chain the new
1131 subblocks onto the end of any pre-existing subblocks. */
1132 BLOCK_SUBBLOCKS (block
) = chainon (BLOCK_SUBBLOCKS (block
),
1135 /* If we created the block earlier on, and we are just
1136 diddling it now, then it already should have a proper
1137 BLOCK_END_NOTE value associated with it. */
1141 BLOCK_VARS (block
) = decls
;
1142 BLOCK_TYPE_TAGS (block
) = tags
;
1143 BLOCK_SUBBLOCKS (block
) = subblocks
;
1144 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1145 remember_end_note (block
);
1149 /* In each subblock, record that this is its superior. */
1152 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1153 BLOCK_SUPERCONTEXT (link
) = block
;
1155 /* Clear out the meanings of the local variables of this level. */
1157 if (current_binding_level
->is_for_scope
&& flag_new_for_scope
== 1)
1159 struct binding_level
*outer
= current_binding_level
->level_chain
;
1160 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1162 if (TREE_CODE (link
) == VAR_DECL
)
1163 DECL_DEAD_FOR_LOCAL (link
) = 1;
1165 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1168 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1169 'for' scoping semantics. */
1171 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1173 tree id
= TREE_PURPOSE (link
);
1174 tree decl
= IDENTIFIER_LOCAL_VALUE (id
);
1176 if (decl
&& DECL_DEAD_FOR_LOCAL (decl
))
1178 /* In this case keep the dead for-decl visible,
1179 but remember what (if anything) it shadowed. */
1180 DECL_SHADOWED_FOR_VAR (decl
) = TREE_VALUE (link
);
1181 TREE_CHAIN (decl
) = outer
->dead_vars_from_for
;
1182 outer
->dead_vars_from_for
= decl
;
1185 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VALUE (link
);
1188 else /* Not special for scope. */
1190 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1192 if (DECL_NAME (link
) != NULL_TREE
)
1194 /* If the ident. was used or addressed via a local extern decl,
1195 don't forget that fact. */
1196 if (DECL_EXTERNAL (link
))
1198 if (TREE_USED (link
))
1199 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1200 if (TREE_ADDRESSABLE (link
))
1201 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1203 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1207 /* Restore all name-meanings of the outer levels
1208 that were shadowed by this level. */
1210 for (link
= current_binding_level
->shadowed
;
1211 link
; link
= TREE_CHAIN (link
))
1212 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1214 /* We first restore the regular decls and *then* the dead_vars_from_for
1215 to handle this case:
1219 for (int i; ; ) { ...} // i#2
1223 In this case, we want remove the binding for i#3, restoring
1224 that of i#2. Then we want to remove the binding for i#2,
1225 and restore that of i#1. */
1227 link
= current_binding_level
->dead_vars_from_for
;
1228 for (; link
!= NULL_TREE
; link
= TREE_CHAIN (link
))
1230 tree id
= DECL_NAME (link
);
1231 if (IDENTIFIER_LOCAL_VALUE (id
) == link
)
1232 IDENTIFIER_LOCAL_VALUE (id
) = DECL_SHADOWED_FOR_VAR (link
);
1235 for (link
= current_binding_level
->class_shadowed
;
1236 link
; link
= TREE_CHAIN (link
))
1237 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1238 for (link
= current_binding_level
->type_shadowed
;
1239 link
; link
= TREE_CHAIN (link
))
1240 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
1243 /* If the level being exited is the top level of a function,
1244 check over all the labels. */
1248 /* If this is the top level block of a function,
1249 the vars are the function's parameters.
1250 Don't leave them in the BLOCK because they are
1251 found in the FUNCTION_DECL instead. */
1253 BLOCK_VARS (block
) = 0;
1255 /* Clear out the definitions of all label names,
1256 since their scopes end here. */
1258 for (link
= named_labels
; link
; link
= TREE_CHAIN (link
))
1260 register tree label
= TREE_VALUE (link
);
1262 if (DECL_INITIAL (label
) == NULL_TREE
)
1264 cp_error_at ("label `%D' used but not defined", label
);
1265 /* Avoid crashing later. */
1266 define_label (input_filename
, 1, DECL_NAME (label
));
1268 else if (warn_unused
&& !TREE_USED (label
))
1269 cp_warning_at ("label `%D' defined but not used", label
);
1270 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), NULL_TREE
);
1272 /* Put the labels into the "variables" of the
1273 top-level block, so debugger can see them. */
1274 TREE_CHAIN (label
) = BLOCK_VARS (block
);
1275 BLOCK_VARS (block
) = label
;
1278 named_labels
= NULL_TREE
;
1281 /* Any uses of undefined labels now operate under constraints
1282 of next binding contour. */
1284 struct binding_level
*level_chain
;
1285 level_chain
= current_binding_level
->level_chain
;
1288 struct named_label_list
*labels
;
1289 for (labels
= named_label_uses
; labels
; labels
= labels
->next
)
1290 if (labels
->binding_level
== current_binding_level
)
1292 labels
->binding_level
= level_chain
;
1293 labels
->names_in_scope
= level_chain
->names
;
1298 tmp
= current_binding_level
->keep
;
1300 pop_binding_level ();
1302 DECL_INITIAL (current_function_decl
) = block
;
1305 if (!block_previously_created
)
1306 current_binding_level
->blocks
1307 = chainon (current_binding_level
->blocks
, block
);
1309 /* If we did not make a block for the level just exited,
1310 any blocks made for inner levels
1311 (since they cannot be recorded as subblocks in that level)
1312 must be carried forward so they will later become subblocks
1313 of something else. */
1317 current_binding_level
->blocks
1318 = chainon (subblocks
, current_binding_level
->blocks
);
1320 current_binding_level
->blocks
1321 = chainon (current_binding_level
->blocks
, subblocks
);
1324 /* Take care of compiler's internal binding structures. */
1327 expand_end_bindings (getdecls (), keep
, 1);
1328 /* Each and every BLOCK node created here in `poplevel' is important
1329 (e.g. for proper debugging information) so if we created one
1330 earlier, mark it as "used". */
1332 TREE_USED (block
) = 1;
1333 block
= poplevel (keep
, reverse
, real_functionbody
);
1336 /* Each and every BLOCK node created here in `poplevel' is important
1337 (e.g. for proper debugging information) so if we created one
1338 earlier, mark it as "used". */
1340 TREE_USED (block
) = 1;
1344 /* Delete the node BLOCK from the current binding level.
1345 This is used for the block inside a stmt expr ({...})
1346 so that the block can be reinserted where appropriate. */
1349 delete_block (block
)
1353 if (current_binding_level
->blocks
== block
)
1354 current_binding_level
->blocks
= TREE_CHAIN (block
);
1355 for (t
= current_binding_level
->blocks
; t
;)
1357 if (TREE_CHAIN (t
) == block
)
1358 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1362 TREE_CHAIN (block
) = NULL_TREE
;
1363 /* Clear TREE_USED which is always set by poplevel.
1364 The flag is set again if insert_block is called. */
1365 TREE_USED (block
) = 0;
1368 /* Insert BLOCK at the end of the list of subblocks of the
1369 current binding level. This is used when a BIND_EXPR is expanded,
1370 to handle the BLOCK node inside the BIND_EXPR. */
1373 insert_block (block
)
1376 TREE_USED (block
) = 1;
1377 current_binding_level
->blocks
1378 = chainon (current_binding_level
->blocks
, block
);
1381 /* Set the BLOCK node for the innermost scope
1382 (the one we are currently in). */
1386 register tree block
;
1388 current_binding_level
->this_block
= block
;
1391 /* Do a pushlevel for class declarations. */
1396 register struct binding_level
*newlevel
;
1398 /* Reuse or create a struct for this binding level. */
1399 #if defined(DEBUG_CP_BINDING_LEVELS)
1401 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1402 if (free_binding_level
)
1403 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1405 newlevel
= free_binding_level
;
1406 free_binding_level
= free_binding_level
->level_chain
;
1410 newlevel
= make_binding_level ();
1413 #if defined(DEBUG_CP_BINDING_LEVELS)
1415 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1417 push_binding_level (newlevel
, 0, 0);
1419 decl_stack
= push_decl_level (decl_stack
, &decl_obstack
);
1420 class_binding_level
= current_binding_level
;
1421 class_binding_level
->parm_flag
= 2;
1422 /* We have just pushed into a new binding level. Now, fake out the rest
1423 of the compiler. Set the `current_binding_level' back to point to
1424 the most closely containing non-class binding level. */
1427 current_binding_level
= current_binding_level
->level_chain
;
1429 while (current_binding_level
->parm_flag
== 2);
1432 /* ...and a poplevel for class declarations. FORCE is used to force
1433 clearing out of CLASS_VALUEs after a class definition. */
1436 poplevel_class (force
)
1439 register struct binding_level
*level
= class_binding_level
;
1440 tree block
= NULL_TREE
;
1443 my_friendly_assert (level
!= 0, 354);
1445 decl_stack
= pop_stack_level (decl_stack
);
1446 for (shadowed
= level
->shadowed
; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
1447 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1448 /* If we're leaving a toplevel class, don't bother to do the setting
1449 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1450 shouldn't even be used when current_class_type isn't set, and second,
1451 if we don't touch it here, we're able to use the cache effect if the
1452 next time we're entering a class scope, it is the same class. */
1453 if (current_class_depth
!= 1 || force
)
1454 for (shadowed
= level
->class_shadowed
;
1456 shadowed
= TREE_CHAIN (shadowed
))
1457 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1459 /* Remember to save what IDENTIFIER's were bound in this scope so we
1460 can recover from cache misses. */
1462 previous_class_type
= current_class_type
;
1463 previous_class_values
= class_binding_level
->class_shadowed
;
1465 for (shadowed
= level
->type_shadowed
;
1467 shadowed
= TREE_CHAIN (shadowed
))
1468 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
), TREE_VALUE (shadowed
));
1470 GNU_xref_end_scope ((HOST_WIDE_INT
) class_binding_level
,
1471 (HOST_WIDE_INT
) class_binding_level
->level_chain
,
1472 class_binding_level
->parm_flag
,
1473 class_binding_level
->keep
);
1475 if (class_binding_level
->parm_flag
!= 2)
1476 class_binding_level
= (struct binding_level
*)0;
1478 /* Now, pop out of the binding level which we created up in the
1479 `pushlevel_class' routine. */
1480 #if defined(DEBUG_CP_BINDING_LEVELS)
1482 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1484 pop_binding_level ();
1489 /* For debugging. */
1490 static int no_print_functions
= 0;
1491 static int no_print_builtins
= 0;
1494 print_binding_level (lvl
)
1495 struct binding_level
*lvl
;
1499 fprintf (stderr
, " blocks=");
1500 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1501 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1502 list_length (lvl
->incomplete
), lvl
->parm_flag
, lvl
->keep
);
1503 if (lvl
->tag_transparent
)
1504 fprintf (stderr
, " tag-transparent");
1505 if (lvl
->more_cleanups_ok
)
1506 fprintf (stderr
, " more-cleanups-ok");
1507 if (lvl
->have_cleanups
)
1508 fprintf (stderr
, " have-cleanups");
1509 fprintf (stderr
, "\n");
1512 fprintf (stderr
, " names:\t");
1513 /* We can probably fit 3 names to a line? */
1514 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
1516 if (no_print_functions
&& (TREE_CODE (t
) == FUNCTION_DECL
))
1518 if (no_print_builtins
1519 && (TREE_CODE (t
) == TYPE_DECL
)
1520 && (!strcmp (DECL_SOURCE_FILE (t
),"<built-in>")))
1523 /* Function decls tend to have longer names. */
1524 if (TREE_CODE (t
) == FUNCTION_DECL
)
1531 fprintf (stderr
, "\n\t");
1534 print_node_brief (stderr
, "", t
, 0);
1535 if (t
== error_mark_node
)
1539 fprintf (stderr
, "\n");
1543 fprintf (stderr
, " tags:\t");
1545 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
1547 if (TREE_PURPOSE (t
) == NULL_TREE
)
1549 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1556 fprintf (stderr
, "\n\t");
1559 if (TREE_PURPOSE (t
) == NULL_TREE
)
1561 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
1562 fprintf (stderr
, ">");
1564 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1565 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1568 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
1569 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1570 fprintf (stderr
, ">");
1574 fprintf (stderr
, "\n");
1578 fprintf (stderr
, " shadowed:");
1579 for (t
= lvl
->shadowed
; t
; t
= TREE_CHAIN (t
))
1581 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1583 fprintf (stderr
, "\n");
1585 if (lvl
->class_shadowed
)
1587 fprintf (stderr
, " class-shadowed:");
1588 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
1590 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1592 fprintf (stderr
, "\n");
1594 if (lvl
->type_shadowed
)
1596 fprintf (stderr
, " type-shadowed:");
1597 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1599 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1601 fprintf (stderr
, "\n");
1606 print_other_binding_stack (stack
)
1607 struct binding_level
*stack
;
1609 struct binding_level
*level
;
1610 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
1612 fprintf (stderr
, "binding level ");
1613 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
1614 fprintf (stderr
, "\n");
1615 print_binding_level (level
);
1620 print_binding_stack ()
1622 struct binding_level
*b
;
1623 fprintf (stderr
, "current_binding_level=");
1624 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
1625 fprintf (stderr
, "\nclass_binding_level=");
1626 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
1627 fprintf (stderr
, "\nglobal_binding_level=");
1628 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
1629 fprintf (stderr
, "\n");
1630 if (class_binding_level
)
1632 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
1633 if (b
== current_binding_level
)
1636 b
= class_binding_level
;
1638 b
= current_binding_level
;
1641 b
= current_binding_level
;
1642 print_other_binding_stack (b
);
1643 fprintf (stderr
, "global:\n");
1644 print_binding_level (global_binding_level
);
1647 /* Namespace binding access routines: The namespace_bindings field of
1648 the identifier is polymorphic, with three possible values:
1649 NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node
1650 indicating the BINDING_VALUE of global_namespace. */
1652 /* Check whether the a binding for the name to scope is known.
1653 Assumes that the bindings of the name are already a list
1654 of bindings. Returns the binding found, or NULL_TREE. */
1657 find_binding (name
, scope
)
1661 tree iter
, prev
= NULL_TREE
;
1663 scope
= ORIGINAL_NAMESPACE (scope
);
1665 for (iter
= IDENTIFIER_NAMESPACE_BINDINGS (name
); iter
;
1666 iter
= TREE_CHAIN (iter
))
1668 my_friendly_assert (TREE_CODE (iter
) == CPLUS_BINDING
, 374);
1669 if (BINDING_SCOPE (iter
) == scope
)
1671 /* Move binding found to the fron of the list, so
1672 subsequent lookups will find it faster. */
1675 TREE_CHAIN (prev
) = TREE_CHAIN (iter
);
1676 TREE_CHAIN (iter
) = IDENTIFIER_NAMESPACE_BINDINGS (name
);
1677 IDENTIFIER_NAMESPACE_BINDINGS (name
) = iter
;
1686 /* Always returns a binding for name in scope. If the
1687 namespace_bindings is not a list, convert it to one first.
1688 If no binding is found, make a new one. */
1691 binding_for_name (name
, scope
)
1695 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1698 scope
= ORIGINAL_NAMESPACE (scope
);
1700 if (b
&& TREE_CODE (b
) != CPLUS_BINDING
)
1702 /* Get rid of optimization for global scope. */
1703 IDENTIFIER_NAMESPACE_BINDINGS (name
) = NULL_TREE
;
1704 BINDING_VALUE (binding_for_name (name
, global_namespace
)) = b
;
1705 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1707 if (b
&& (result
= find_binding (name
, scope
)))
1709 /* Not found, make a new permanent one. */
1710 push_obstacks (&permanent_obstack
, &permanent_obstack
);
1711 result
= make_node (CPLUS_BINDING
);
1712 TREE_CHAIN (result
) = b
;
1713 IDENTIFIER_NAMESPACE_BINDINGS (name
) = result
;
1714 BINDING_SCOPE (result
) = scope
;
1715 BINDING_TYPE (result
) = NULL_TREE
;
1716 BINDING_VALUE (result
) = NULL_TREE
;
1721 /* Return the binding value for name in scope, considering that
1722 namespace_binding may or may not be a list of CPLUS_BINDINGS. */
1725 namespace_binding (name
, scope
)
1729 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1732 if (scope
== NULL_TREE
)
1733 scope
= global_namespace
;
1734 if (TREE_CODE (b
) != CPLUS_BINDING
)
1735 return (scope
== global_namespace
) ? b
: NULL_TREE
;
1736 name
= find_binding (name
,scope
);
1737 if (name
== NULL_TREE
)
1739 return BINDING_VALUE (name
);
1742 /* Set the binding value for name in scope. If modifying the binding
1743 of global_namespace is attempted, try to optimize it. */
1746 set_namespace_binding (name
, scope
, val
)
1753 if (scope
== NULL_TREE
)
1754 scope
= global_namespace
;
1756 if (scope
== global_namespace
)
1758 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1759 if (b
== NULL_TREE
|| TREE_CODE (b
) != CPLUS_BINDING
)
1761 IDENTIFIER_NAMESPACE_BINDINGS (name
) = val
;
1765 b
= binding_for_name (name
, scope
);
1766 BINDING_VALUE (b
) = val
;
1769 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1770 select a name that is unique to this compilation unit. */
1773 push_namespace (name
)
1778 int implicit_use
= 0;
1780 if (!global_namespace
)
1782 /* This must be ::. */
1783 my_friendly_assert (name
== get_identifier ("::"), 377);
1788 /* The name of anonymous namespace is unique for the translation
1790 if (!anonymous_namespace_name
)
1791 anonymous_namespace_name
= get_file_function_name ('N');
1792 name
= anonymous_namespace_name
;
1793 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1795 /* Reopening anonymous namespace. */
1799 else if (current_namespace
== global_namespace
1800 && name
== DECL_NAME (std_node
))
1807 /* Check whether this is an extended namespace definition. */
1808 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1809 if (d
!= NULL_TREE
&& TREE_CODE (d
) == NAMESPACE_DECL
)
1812 if (DECL_NAMESPACE_ALIAS (d
))
1814 cp_error ("namespace alias `%D' not allowed here, assuming `%D'",
1815 d
, DECL_NAMESPACE_ALIAS (d
));
1816 d
= DECL_NAMESPACE_ALIAS (d
);
1823 /* Make a new namespace, binding the name to it. */
1824 d
= build_lang_decl (NAMESPACE_DECL
, name
, void_type_node
);
1825 /* The global namespace is not pushed, and the global binding
1826 level is set elsewhere. */
1831 declare_namespace_level ();
1832 NAMESPACE_LEVEL (d
) = current_binding_level
;
1836 resume_binding_level (NAMESPACE_LEVEL (d
));
1839 do_using_directive (d
);
1840 /* Enter the name space. */
1841 current_namespace
= d
;
1844 /* Pop from the scope of the current namespace. */
1849 if (current_namespace
== global_namespace
)
1851 my_friendly_assert (in_std
>0, 980421);
1855 current_namespace
= CP_DECL_CONTEXT (current_namespace
);
1856 /* The binding level is not popped, as it might be re-opened later. */
1857 suspend_binding_level ();
1860 /* Concatenate the binding levels of all namespaces. */
1863 cat_namespace_levels()
1867 struct binding_level
*b
;
1869 last
= NAMESPACE_LEVEL (global_namespace
) -> names
;
1870 /* The nested namespaces appear in the names list of their ancestors. */
1871 for (current
= last
; current
; current
= TREE_CHAIN (current
))
1873 if (TREE_CODE (current
) != NAMESPACE_DECL
1874 || DECL_NAMESPACE_ALIAS (current
))
1876 if (!DECL_LANG_SPECIFIC (current
))
1879 my_friendly_assert (current
== std_node
, 393);
1882 b
= NAMESPACE_LEVEL (current
);
1883 while (TREE_CHAIN (last
))
1884 last
= TREE_CHAIN (last
);
1885 TREE_CHAIN (last
) = NAMESPACE_LEVEL (current
) -> names
;
1889 /* Subroutines for reverting temporarily to top-level for instantiation
1890 of templates and such. We actually need to clear out the class- and
1891 local-value slots of all identifiers, so that only the global values
1892 are at all visible. Simply setting current_binding_level to the global
1893 scope isn't enough, because more binding levels may be pushed. */
1894 struct saved_scope
{
1895 struct binding_level
*old_binding_level
;
1898 struct saved_scope
*prev
;
1899 tree class_name
, class_type
, function_decl
;
1900 struct binding_level
*class_bindings
;
1901 tree
*lang_base
, *lang_stack
, lang_name
;
1903 int minimal_parse_mode
;
1904 tree last_function_parms
;
1905 tree template_parms
;
1906 HOST_WIDE_INT processing_template_decl
;
1907 tree previous_class_type
, previous_class_values
;
1908 int processing_specialization
;
1909 int processing_explicit_instantiation
;
1911 static struct saved_scope
*current_saved_scope
;
1913 /* A chain of the binding vecs created by store_bindings. We create a
1914 whole bunch of these during compilation, on permanent_obstack, so we
1915 can't just throw them away. */
1916 static tree free_binding_vecs
;
1919 store_bindings (names
, old_bindings
)
1920 tree names
, old_bindings
;
1923 for (t
= names
; t
; t
= TREE_CHAIN (t
))
1925 tree binding
, t1
, id
;
1927 if (TREE_CODE (t
) == TREE_LIST
)
1928 id
= TREE_PURPOSE (t
);
1933 || (!IDENTIFIER_LOCAL_VALUE (id
)
1934 && !IDENTIFIER_CLASS_VALUE (id
)))
1937 for (t1
= old_bindings
; t1
; t1
= TREE_CHAIN (t1
))
1938 if (TREE_VEC_ELT (t1
, 0) == id
)
1941 if (free_binding_vecs
)
1943 binding
= free_binding_vecs
;
1944 free_binding_vecs
= TREE_CHAIN (free_binding_vecs
);
1947 binding
= make_tree_vec (4);
1951 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
1952 TREE_VEC_ELT (binding
, 0) = id
;
1953 TREE_VEC_ELT (binding
, 1) = REAL_IDENTIFIER_TYPE_VALUE (id
);
1954 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_LOCAL_VALUE (id
);
1955 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
1956 IDENTIFIER_LOCAL_VALUE (id
) = NULL_TREE
;
1957 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
1959 TREE_CHAIN (binding
) = old_bindings
;
1960 old_bindings
= binding
;
1964 return old_bindings
;
1968 maybe_push_to_top_level (pseudo
)
1971 extern int current_lang_stacksize
;
1972 struct saved_scope
*s
1973 = (struct saved_scope
*) xmalloc (sizeof (struct saved_scope
));
1974 struct binding_level
*b
= inner_binding_level
;
1975 tree old_bindings
= NULL_TREE
;
1977 if (current_function_decl
)
1978 push_cp_function_context (NULL_TREE
);
1980 if (previous_class_type
)
1981 old_bindings
= store_bindings (previous_class_values
, old_bindings
);
1983 /* Have to include global_binding_level, because class-level decls
1984 aren't listed anywhere useful. */
1985 for (; b
; b
= b
->level_chain
)
1989 /* Template IDs are inserted into the global level. If they were
1990 inserted into namespace level, finish_file wouldn't find them
1991 when doing pending instantiations. Therefore, don't stop at
1992 namespace level, but continue until :: . */
1993 if (b
== global_binding_level
|| (pseudo
&& b
->pseudo_global
))
1996 old_bindings
= store_bindings (b
->names
, old_bindings
);
1997 /* We also need to check class_shadowed to save class-level type
1998 bindings, since pushclass doesn't fill in b->names. */
1999 if (b
->parm_flag
== 2)
2000 old_bindings
= store_bindings (b
->class_shadowed
, old_bindings
);
2002 /* Unwind type-value slots back to top level. */
2003 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
2004 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
2007 s
->old_binding_level
= current_binding_level
;
2008 current_binding_level
= b
;
2010 s
->old_namespace
= current_namespace
;
2011 s
->class_name
= current_class_name
;
2012 s
->class_type
= current_class_type
;
2013 s
->function_decl
= current_function_decl
;
2014 s
->class_bindings
= class_binding_level
;
2015 s
->lang_stack
= current_lang_stack
;
2016 s
->lang_base
= current_lang_base
;
2017 s
->lang_stacksize
= current_lang_stacksize
;
2018 s
->lang_name
= current_lang_name
;
2019 s
->minimal_parse_mode
= minimal_parse_mode
;
2020 s
->last_function_parms
= last_function_parms
;
2021 s
->template_parms
= current_template_parms
;
2022 s
->processing_template_decl
= processing_template_decl
;
2023 s
->previous_class_type
= previous_class_type
;
2024 s
->previous_class_values
= previous_class_values
;
2025 s
->processing_specialization
= processing_specialization
;
2026 s
->processing_explicit_instantiation
= processing_explicit_instantiation
;
2028 current_class_name
= current_class_type
= NULL_TREE
;
2029 current_function_decl
= NULL_TREE
;
2030 class_binding_level
= (struct binding_level
*)0;
2031 current_lang_stacksize
= 10;
2032 current_lang_stack
= current_lang_base
2033 = (tree
*) xmalloc (current_lang_stacksize
* sizeof (tree
));
2034 current_lang_name
= lang_name_cplusplus
;
2035 strict_prototype
= strict_prototypes_lang_cplusplus
;
2036 named_labels
= NULL_TREE
;
2037 shadowed_labels
= NULL_TREE
;
2038 minimal_parse_mode
= 0;
2039 previous_class_type
= previous_class_values
= NULL_TREE
;
2040 processing_specialization
= 0;
2041 processing_explicit_instantiation
= 0;
2042 current_template_parms
= NULL_TREE
;
2043 processing_template_decl
= 0;
2044 current_namespace
= global_namespace
;
2046 s
->prev
= current_saved_scope
;
2047 s
->old_bindings
= old_bindings
;
2048 current_saved_scope
= s
;
2050 push_obstacks (&permanent_obstack
, &permanent_obstack
);
2054 push_to_top_level ()
2056 maybe_push_to_top_level (0);
2060 pop_from_top_level ()
2062 extern int current_lang_stacksize
;
2063 struct saved_scope
*s
= current_saved_scope
;
2066 /* Clear out class-level bindings cache. */
2067 if (previous_class_type
)
2070 previous_class_type
= NULL_TREE
;
2075 current_binding_level
= s
->old_binding_level
;
2076 current_saved_scope
= s
->prev
;
2077 for (t
= s
->old_bindings
; t
; )
2080 tree id
= TREE_VEC_ELT (t
, 0);
2083 SET_IDENTIFIER_TYPE_VALUE (id
, TREE_VEC_ELT (t
, 1));
2084 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VEC_ELT (t
, 2);
2085 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
2088 TREE_CHAIN (save
) = free_binding_vecs
;
2089 free_binding_vecs
= save
;
2091 current_namespace
= s
->old_namespace
;
2092 current_class_name
= s
->class_name
;
2093 current_class_type
= s
->class_type
;
2094 current_function_decl
= s
->function_decl
;
2095 class_binding_level
= s
->class_bindings
;
2096 free (current_lang_base
);
2097 current_lang_base
= s
->lang_base
;
2098 current_lang_stack
= s
->lang_stack
;
2099 current_lang_name
= s
->lang_name
;
2100 current_lang_stacksize
= s
->lang_stacksize
;
2101 if (current_lang_name
== lang_name_cplusplus
)
2102 strict_prototype
= strict_prototypes_lang_cplusplus
;
2103 else if (current_lang_name
== lang_name_c
)
2104 strict_prototype
= strict_prototypes_lang_c
;
2105 minimal_parse_mode
= s
->minimal_parse_mode
;
2106 last_function_parms
= s
->last_function_parms
;
2107 current_template_parms
= s
->template_parms
;
2108 processing_template_decl
= s
->processing_template_decl
;
2109 previous_class_type
= s
->previous_class_type
;
2110 previous_class_values
= s
->previous_class_values
;
2111 processing_specialization
= s
->processing_specialization
;
2112 processing_explicit_instantiation
= s
->processing_explicit_instantiation
;
2116 if (current_function_decl
)
2117 pop_cp_function_context (NULL_TREE
);
2120 /* Push a definition of struct, union or enum tag "name".
2121 into binding_level "b". "type" should be the type node,
2122 We assume that the tag "name" is not already defined.
2124 Note that the definition may really be just a forward reference.
2125 In that case, the TYPE_SIZE will be a NULL_TREE.
2127 C++ gratuitously puts all these tags in the name space. */
2129 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2130 record the shadowed value for this binding contour. TYPE is
2131 the type that ID maps to. */
2134 set_identifier_type_value_with_scope (id
, type
, b
)
2137 struct binding_level
*b
;
2139 if (!b
->namespace_p
)
2141 /* Shadow the marker, not the real thing, so that the marker
2142 gets restored later. */
2143 tree old_type_value
= REAL_IDENTIFIER_TYPE_VALUE (id
);
2145 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
2149 tree binding
= binding_for_name (id
, current_namespace
);
2150 BINDING_TYPE (binding
) = type
;
2151 /* Store marker instead of real type. */
2152 type
= global_type_node
;
2154 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
2157 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2160 set_identifier_type_value (id
, type
)
2164 set_identifier_type_value_with_scope (id
, type
, inner_binding_level
);
2168 set_identifier_local_value_with_scope (id
, val
, b
)
2170 struct binding_level
*b
;
2173 my_friendly_assert (! b
->namespace_p
, 980716);
2175 oldlocal
= IDENTIFIER_LOCAL_VALUE (id
);
2176 b
->shadowed
= tree_cons (id
, oldlocal
, b
->shadowed
);
2177 IDENTIFIER_LOCAL_VALUE (id
) = val
;
2181 set_identifier_local_value (id
, val
)
2184 set_identifier_local_value_with_scope (id
, val
, current_binding_level
);
2187 /* Return the type associated with id. */
2190 identifier_type_value (id
)
2193 /* There is no type with that name, anywhere. */
2194 if (REAL_IDENTIFIER_TYPE_VALUE (id
) == NULL_TREE
)
2196 /* This is not the type marker, but the real thing. */
2197 if (REAL_IDENTIFIER_TYPE_VALUE (id
) != global_type_node
)
2198 return REAL_IDENTIFIER_TYPE_VALUE (id
);
2199 /* Have to search for it. It must be on the global level, now.
2200 Ask lookup_name not to return non-types. */
2201 id
= lookup_name_real (id
, 2, 1, 0);
2203 return TREE_TYPE (id
);
2207 /* Pop off extraneous binding levels left over due to syntax errors.
2209 We don't pop past namespaces, as they might be valid. */
2214 #ifdef DEBUG_CP_BINDING_LEVELS
2215 fprintf (stderr
, "XXX entering pop_everything ()\n");
2217 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2219 if (class_binding_level
)
2220 pop_nested_class (1);
2224 #ifdef DEBUG_CP_BINDING_LEVELS
2225 fprintf (stderr
, "XXX leaving pop_everything ()\n");
2229 /* The type TYPE is being declared. If it is a class template, or a
2230 specialization of a class template, do any processing required and
2231 perform error-checking. If IS_FRIEND is non-zero, this TYPE is
2232 being declared a friend. B is the binding level at which this TYPE
2235 Returns the TYPE_DECL for TYPE, which may have been altered by this
2239 maybe_process_template_type_declaration (type
, globalize
, b
)
2242 struct binding_level
* b
;
2244 tree decl
= TYPE_NAME (type
);
2246 if (processing_template_parmlist
)
2247 /* You can't declare a new template type in a template parameter
2248 list. But, you can declare a non-template type:
2250 template <class A*> struct S;
2252 is a forward-declaration of `A'. */
2256 maybe_check_template_type (type
);
2258 my_friendly_assert (IS_AGGR_TYPE (type
)
2259 || TREE_CODE (type
) == ENUMERAL_TYPE
, 0);
2262 if (/* If !GLOBALIZE then we are looking at a definition.
2263 It may not be a primary template. (For example, in:
2266 struct S1 { class S2 {}; }
2268 we have to push_template_decl for S2.) */
2269 (processing_template_decl
&& !globalize
)
2270 /* If we are declaring a friend template class, we will
2271 have GLOBALIZE set, since something like:
2279 declares S2 to be at global scope. */
2280 || PROCESSING_REAL_TEMPLATE_DECL_P ())
2282 /* This may change after the call to
2283 push_template_decl_real, but we want the original value. */
2284 tree name
= DECL_NAME (decl
);
2286 decl
= push_template_decl_real (decl
, globalize
);
2287 /* If the current binding level is the binding level for the
2288 template parameters (see the comment in
2289 begin_template_parm_list) and the enclosing level is a class
2290 scope, and we're not looking at a friend, push the
2291 declaration of the member class into the class scope. In the
2292 friend case, push_template_decl will already have put the
2293 friend into global scope, if appropriate. */
2294 if (TREE_CODE (type
) != ENUMERAL_TYPE
2295 && !globalize
&& b
->pseudo_global
2296 && b
->level_chain
->parm_flag
== 2)
2298 pushdecl_with_scope (CLASSTYPE_TI_TEMPLATE (type
),
2300 /* Put this tag on the list of tags for the class, since
2301 that won't happen below because B is not the class
2302 binding level, but is instead the pseudo-global level. */
2303 b
->level_chain
->tags
=
2304 saveable_tree_cons (name
, type
, b
->level_chain
->tags
);
2305 TREE_NONLOCAL_FLAG (type
) = 1;
2306 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2307 CLASSTYPE_TAGS (current_class_type
) = b
->level_chain
->tags
;
2315 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2316 Normally put it into the inner-most non-tag-transparent scope,
2317 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2318 The latter is needed for implicit declarations. */
2321 pushtag (name
, type
, globalize
)
2325 register struct binding_level
*b
;
2329 b
= inner_binding_level
;
2330 while (b
->tag_transparent
2331 || (globalize
&& b
->parm_flag
== 2))
2334 if (toplevel_bindings_p ())
2335 b
->tags
= perm_tree_cons (name
, type
, b
->tags
);
2337 b
->tags
= saveable_tree_cons (name
, type
, b
->tags
);
2341 context
= type
? TYPE_CONTEXT (type
) : NULL_TREE
;
2344 tree cs
= current_scope ();
2348 else if (cs
!= NULL_TREE
2349 && TREE_CODE_CLASS (TREE_CODE (cs
)) == 't')
2350 /* When declaring a friend class of a local class, we want
2351 to inject the newly named class into the scope
2352 containing the local class, not the namespace scope. */
2353 context
= hack_decl_function_context (get_type_decl (cs
));
2356 c_decl
= TREE_CODE (context
) == FUNCTION_DECL
2357 ? context
: TYPE_MAIN_DECL (context
);
2360 context
= current_namespace
;
2362 /* Do C++ gratuitous typedefing. */
2363 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2365 register tree d
= NULL_TREE
;
2366 int newdecl
= 0, in_class
= 0;
2368 if ((b
->pseudo_global
&& b
->level_chain
->parm_flag
== 2)
2369 || b
->parm_flag
== 2)
2372 d
= lookup_nested_type (type
, c_decl
);
2377 d
= build_decl (TYPE_DECL
, name
, type
);
2378 if (current_lang_name
== lang_name_java
)
2379 TYPE_FOR_JAVA (type
) = 1;
2380 SET_DECL_ARTIFICIAL (d
);
2382 set_identifier_type_value_with_scope (name
, type
, b
);
2385 d
= TYPE_MAIN_DECL (d
);
2387 TYPE_NAME (type
) = d
;
2388 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
2390 d
= maybe_process_template_type_declaration (type
,
2393 if (b
->parm_flag
== 2)
2394 d
= pushdecl_class_level (d
);
2396 d
= pushdecl_with_scope (d
, b
);
2400 if (ANON_AGGRNAME_P (name
))
2401 DECL_IGNORED_P (d
) = 1;
2403 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2404 DECL_ASSEMBLER_NAME (d
) = DECL_NAME (d
);
2405 if (!uses_template_parms (type
))
2406 DECL_ASSEMBLER_NAME (d
)
2407 = get_identifier (build_overload_name (type
, 1, 1));
2410 if (b
->parm_flag
== 2)
2412 TREE_NONLOCAL_FLAG (type
) = 1;
2413 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2414 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2418 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2419 /* Use the canonical TYPE_DECL for this node. */
2420 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2423 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2424 will be the tagged type we just added to the current
2425 binding level. This fake NULL-named TYPE_DECL node helps
2426 dwarfout.c to know when it needs to output a
2427 representation of a tagged type, and it also gives us a
2428 convenient place to record the "scope start" address for
2431 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2432 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2436 /* Counter used to create anonymous type names. */
2438 static int anon_cnt
= 0;
2440 /* Return an IDENTIFIER which can be used as a name for
2441 anonymous structs and unions. */
2448 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2449 return get_identifier (buf
);
2452 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2453 This keeps dbxout from getting confused. */
2458 register struct binding_level
*b
;
2460 static int last_cnt
= 0;
2462 /* Fast out if no new anon names were declared. */
2463 if (last_cnt
== anon_cnt
)
2466 b
= current_binding_level
;
2467 while (b
->tag_transparent
)
2472 /* A NULL purpose means we have already processed all tags
2473 from here to the end of the list. */
2474 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2476 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2477 TREE_PURPOSE (tags
) = NULL_TREE
;
2478 tags
= TREE_CHAIN (tags
);
2480 last_cnt
= anon_cnt
;
2483 /* Subroutine of duplicate_decls: return truthvalue of whether
2484 or not types of these decls match.
2486 For C++, we must compare the parameter list so that `int' can match
2487 `int&' in a parameter position, but `int&' is not confused with
2491 decls_match (newdecl
, olddecl
)
2492 tree newdecl
, olddecl
;
2496 if (TREE_CODE (newdecl
) == FUNCTION_DECL
2497 && TREE_CODE (olddecl
) == FUNCTION_DECL
)
2499 tree f1
= TREE_TYPE (newdecl
);
2500 tree f2
= TREE_TYPE (olddecl
);
2501 tree p1
= TYPE_ARG_TYPES (f1
);
2502 tree p2
= TYPE_ARG_TYPES (f2
);
2504 if (DECL_REAL_CONTEXT (newdecl
) != DECL_REAL_CONTEXT (olddecl
)
2505 && ! (DECL_LANGUAGE (newdecl
) == lang_c
2506 && DECL_LANGUAGE (olddecl
) == lang_c
))
2509 /* When we parse a static member function definition,
2510 we put together a FUNCTION_DECL which thinks its type
2511 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2513 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2514 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2515 else if (TREE_CODE (f2
) == METHOD_TYPE
2516 && DECL_STATIC_FUNCTION_P (newdecl
))
2517 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2519 /* Here we must take care of the case where new default
2520 parameters are specified. Also, warn if an old
2521 declaration becomes ambiguous because default
2522 parameters may cause the two to be ambiguous. */
2523 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2525 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2526 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2528 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2532 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2534 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2537 types_match
= self_promoting_args_p (p1
);
2538 if (p1
== void_list_node
)
2539 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2541 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2542 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2544 types_match
= self_promoting_args_p (p2
);
2545 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2548 types_match
= compparms (p1
, p2
, 3);
2553 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
2554 && TREE_CODE (olddecl
) == TEMPLATE_DECL
)
2556 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2557 DECL_TEMPLATE_PARMS (olddecl
)))
2560 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2563 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2564 DECL_TEMPLATE_RESULT (newdecl
));
2568 if (TREE_TYPE (newdecl
) == error_mark_node
)
2569 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2570 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2571 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2572 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2574 /* Qualifiers must match, and they may be present on either, the type
2576 else if ((TREE_READONLY (newdecl
)
2577 || TYPE_READONLY (TREE_TYPE (newdecl
)))
2578 == (TREE_READONLY (olddecl
)
2579 || TYPE_READONLY (TREE_TYPE (olddecl
)))
2580 && (TREE_THIS_VOLATILE (newdecl
)
2581 || TYPE_VOLATILE (TREE_TYPE (newdecl
)))
2582 == (TREE_THIS_VOLATILE (olddecl
)
2583 || TYPE_VOLATILE (TREE_TYPE (olddecl
))))
2584 types_match
= comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl
)),
2585 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl
)), 1);
2593 /* If NEWDECL is `static' and an `extern' was seen previously,
2594 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2595 information about previous usage as an `extern'.)
2597 Note that this does not apply to the C++ case of declaring
2598 a variable `extern const' and then later `const'.
2600 Don't complain about built-in functions, since they are beyond
2601 the user's control. */
2604 warn_extern_redeclared_static (newdecl
, olddecl
)
2605 tree newdecl
, olddecl
;
2609 static char *explicit_extern_static_warning
2610 = "`%D' was declared `extern' and later `static'";
2611 static char *implicit_extern_static_warning
2612 = "`%D' was declared implicitly `extern' and later `static'";
2614 if (TREE_CODE (newdecl
) == TYPE_DECL
)
2617 name
= DECL_ASSEMBLER_NAME (newdecl
);
2618 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2620 /* It's okay to redeclare an ANSI built-in function as static,
2621 or to declare a non-ANSI built-in function as anything. */
2622 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2623 && olddecl
!= NULL_TREE
2624 && TREE_CODE (olddecl
) == FUNCTION_DECL
2625 && (DECL_BUILT_IN (olddecl
)
2626 || DECL_BUILT_IN_NONANSI (olddecl
))))
2628 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2629 ? implicit_extern_static_warning
2630 : explicit_extern_static_warning
, newdecl
);
2631 if (olddecl
!= NULL_TREE
)
2632 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2637 /* Handle when a new declaration NEWDECL has the same name as an old
2638 one OLDDECL in the same binding contour. Prints an error message
2641 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2642 Otherwise, return 0. */
2645 duplicate_decls (newdecl
, olddecl
)
2646 tree newdecl
, olddecl
;
2648 extern struct obstack permanent_obstack
;
2649 unsigned olddecl_uid
= DECL_UID (olddecl
);
2650 int olddecl_friend
= 0, types_match
= 0;
2651 int new_defines_function
= 0;
2653 if (newdecl
== olddecl
)
2656 types_match
= decls_match (newdecl
, olddecl
);
2658 /* If either the type of the new decl or the type of the old decl is an
2659 error_mark_node, then that implies that we have already issued an
2660 error (earlier) for some bogus type specification, and in that case,
2661 it is rather pointless to harass the user with yet more error message
2662 about the same declaration, so just pretend the types match here. */
2663 if (TREE_TYPE (newdecl
) == error_mark_node
2664 || TREE_TYPE (olddecl
) == error_mark_node
)
2667 /* Check for redeclaration and other discrepancies. */
2668 if (TREE_CODE (olddecl
) == FUNCTION_DECL
2669 && DECL_ARTIFICIAL (olddecl
)
2670 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2672 /* If you declare a built-in or predefined function name as static,
2673 the old definition is overridden, but optionally warn this was a
2674 bad choice of name. Ditto for overloads. */
2675 if (! TREE_PUBLIC (newdecl
)
2676 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2677 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2680 cp_warning ("shadowing %s function `%#D'",
2681 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2683 /* Discard the old built-in function. */
2686 else if (! types_match
)
2688 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2690 /* If the built-in is not ansi, then programs can override
2691 it even globally without an error. */
2692 if (! DECL_BUILT_IN (olddecl
))
2693 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2697 cp_error ("declaration of `%#D'", newdecl
);
2698 cp_error ("conflicts with built-in declaration `%#D'",
2704 cp_warning ("declaration of `%#D'", newdecl
);
2705 cp_warning ("conflicts with built-in declaration `%#D'",
2709 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2711 if ((TREE_CODE (olddecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (olddecl
)
2712 && TREE_CODE (newdecl
) != TYPE_DECL
2713 && ! (TREE_CODE (newdecl
) == TEMPLATE_DECL
2714 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
))
2715 || (TREE_CODE (newdecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (newdecl
)
2716 && TREE_CODE (olddecl
) != TYPE_DECL
2717 && ! (TREE_CODE (olddecl
) == TEMPLATE_DECL
2718 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
))
2721 /* We do nothing special here, because C++ does such nasty
2722 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2723 get shadowed, and know that if we need to find a TYPE_DECL
2724 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2725 slot of the identifier. */
2729 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2730 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
2731 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2732 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
2735 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2736 if (TREE_CODE (olddecl
) == TREE_LIST
)
2737 olddecl
= TREE_VALUE (olddecl
);
2738 cp_error_at ("previous declaration of `%#D'", olddecl
);
2740 /* New decl is completely inconsistent with the old one =>
2741 tell caller to replace the old one. */
2745 else if (!types_match
)
2747 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2749 /* The name of a class template may not be declared to refer to
2750 any other template, class, function, object, namespace, value,
2751 or type in the same scope. */
2752 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
2753 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2755 cp_error ("declaration of template `%#D'", newdecl
);
2756 cp_error_at ("conflicts with previous declaration `%#D'",
2759 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
2760 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
2761 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
2762 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))), 3)
2763 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2764 DECL_TEMPLATE_PARMS (olddecl
)))
2766 cp_error ("new declaration `%#D'", newdecl
);
2767 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2771 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2773 if (DECL_LANGUAGE (newdecl
) == lang_c
2774 && DECL_LANGUAGE (olddecl
) == lang_c
)
2776 cp_error ("declaration of C function `%#D' conflicts with",
2778 cp_error_at ("previous declaration `%#D' here", olddecl
);
2780 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2781 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2783 cp_error ("new declaration `%#D'", newdecl
);
2784 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2790 /* Already complained about this, so don't do so again. */
2791 else if (current_class_type
== NULL_TREE
2792 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2794 cp_error ("conflicting types for `%#D'", newdecl
);
2795 cp_error_at ("previous declaration as `%#D'", olddecl
);
2798 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2799 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2800 && (!DECL_TEMPLATE_INFO (newdecl
)
2801 || (DECL_TI_TEMPLATE (newdecl
)
2802 != DECL_TI_TEMPLATE (olddecl
))))
2803 || (DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2804 && (!DECL_TEMPLATE_INFO (olddecl
)
2805 || (DECL_TI_TEMPLATE (olddecl
)
2806 != DECL_TI_TEMPLATE (newdecl
))))))
2807 /* It's OK to have a template specialization and a non-template
2808 with the same type, or to have specializations of two
2809 different templates with the same type. Note that if one is a
2810 specialization, and the other is an instantiation of the same
2811 template, that we do not exit at this point. That situation
2812 can occur if we instantiate a template class, and then
2813 specialize one of its methods. This situation is legal, but
2814 the declarations must be merged in the usual way. */
2816 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2817 && ((DECL_TEMPLATE_INSTANTIATION (olddecl
)
2818 && !DECL_USE_TEMPLATE (newdecl
))
2819 || (DECL_TEMPLATE_INSTANTIATION (newdecl
)
2820 && !DECL_USE_TEMPLATE (olddecl
))))
2821 /* One of the declarations is a template instantiation, and the
2822 other is not a template at all. That's OK. */
2824 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
2825 && DECL_NAMESPACE_ALIAS (newdecl
)
2826 && DECL_NAMESPACE_ALIAS (newdecl
) == DECL_NAMESPACE_ALIAS (olddecl
))
2827 /* Redeclaration of namespace alias, ignore it. */
2831 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2834 cp_error (errmsg
, newdecl
);
2835 if (DECL_NAME (olddecl
) != NULL_TREE
)
2836 cp_error_at ((DECL_INITIAL (olddecl
)
2837 && namespace_bindings_p ())
2838 ? "`%#D' previously defined here"
2839 : "`%#D' previously declared here", olddecl
);
2841 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2842 && DECL_INITIAL (olddecl
) != NULL_TREE
2843 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2844 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2846 /* Prototype decl follows defn w/o prototype. */
2847 cp_warning_at ("prototype for `%#D'", newdecl
);
2848 cp_warning_at ("follows non-prototype definition here", olddecl
);
2850 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2851 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2853 /* extern "C" int foo ();
2854 int foo () { bar (); }
2856 if (current_lang_stack
== current_lang_base
)
2857 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2860 cp_error_at ("previous declaration of `%#D' with %L linkage",
2861 olddecl
, DECL_LANGUAGE (olddecl
));
2862 cp_error ("conflicts with new declaration with %L linkage",
2863 DECL_LANGUAGE (newdecl
));
2867 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
2869 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2871 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2872 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2875 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2876 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2878 for (; t1
&& t1
!= void_list_node
;
2879 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2880 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2882 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2887 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2889 cp_pedwarn_at ("after previous specification in `%#D'",
2895 cp_error ("default argument given for parameter %d of `%#D'",
2897 cp_error_at ("after previous specification in `%#D'",
2902 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2903 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
2905 cp_warning ("`%#D' was used before it was declared inline",
2907 cp_warning_at ("previous non-inline declaration here",
2911 /* These bits are logically part of the type for non-functions. */
2912 else if (TREE_READONLY (newdecl
) != TREE_READONLY (olddecl
)
2913 || TREE_THIS_VOLATILE (newdecl
) != TREE_THIS_VOLATILE (olddecl
))
2915 cp_pedwarn ("type qualifiers for `%#D'", newdecl
);
2916 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl
);
2920 /* If new decl is `static' and an `extern' was seen previously,
2922 warn_extern_redeclared_static (newdecl
, olddecl
);
2924 /* We have committed to returning 1 at this point. */
2925 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2927 /* Now that functions must hold information normally held
2928 by field decls, there is extra work to do so that
2929 declaration information does not get destroyed during
2931 if (DECL_VINDEX (olddecl
))
2932 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2933 if (DECL_CONTEXT (olddecl
))
2934 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2935 if (DECL_CLASS_CONTEXT (olddecl
))
2936 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2937 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2938 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2939 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2940 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2941 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2942 DECL_VIRTUAL_P (newdecl
) |= DECL_VIRTUAL_P (olddecl
);
2943 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl
) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl
);
2944 new_defines_function
= DECL_INITIAL (newdecl
) != NULL_TREE
;
2946 /* Optionally warn about more than one declaration for the same
2947 name, but don't warn about a function declaration followed by a
2949 if (warn_redundant_decls
&& ! DECL_ARTIFICIAL (olddecl
)
2950 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2951 /* Don't warn about extern decl followed by definition. */
2952 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
))
2953 /* Don't warn about friends, let add_friend take care of it. */
2954 && ! DECL_FRIEND_P (newdecl
))
2956 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2957 cp_warning_at ("previous declaration of `%D'", olddecl
);
2961 /* Deal with C++: must preserve virtual function table size. */
2962 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2964 register tree newtype
= TREE_TYPE (newdecl
);
2965 register tree oldtype
= TREE_TYPE (olddecl
);
2967 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2968 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2970 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2971 CLASSTYPE_FRIEND_CLASSES (newtype
)
2972 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2976 /* Copy all the DECL_... slots specified in the new decl
2977 except for any that we copy here from the old type. */
2978 DECL_MACHINE_ATTRIBUTES (newdecl
)
2979 = merge_machine_decl_attributes (olddecl
, newdecl
);
2981 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2983 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl
),
2984 DECL_TEMPLATE_RESULT (olddecl
)))
2985 cp_error ("invalid redeclaration of %D", newdecl
);
2986 TREE_TYPE (olddecl
) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
));
2987 DECL_TEMPLATE_PARMS (olddecl
) = DECL_TEMPLATE_PARMS (newdecl
);
2988 if (DECL_TEMPLATE_INFO (newdecl
))
2989 DECL_TEMPLATE_INFO (olddecl
) = DECL_TEMPLATE_INFO (newdecl
);
2990 DECL_TEMPLATE_SPECIALIZATIONS (olddecl
)
2991 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl
),
2992 DECL_TEMPLATE_SPECIALIZATIONS (newdecl
));
2999 /* Automatically handles default parameters. */
3000 tree oldtype
= TREE_TYPE (olddecl
);
3003 /* Make sure we put the new type in the same obstack as the old one. */
3005 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
3008 push_obstacks_nochange ();
3009 end_temporary_allocation ();
3012 /* Merge the data types specified in the two decls. */
3013 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
3015 if (TREE_CODE (newdecl
) == VAR_DECL
)
3016 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
3017 /* Do this after calling `common_type' so that default
3018 parameters don't confuse us. */
3019 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3020 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
3021 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
3023 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
3024 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
3025 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
3026 TYPE_RAISES_EXCEPTIONS (oldtype
));
3028 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
3029 && DECL_SOURCE_LINE (olddecl
) != 0
3031 && ! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
3033 cp_pedwarn ("declaration of `%D' throws different exceptions",
3035 cp_pedwarn_at ("previous declaration here", olddecl
);
3038 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
3040 /* Lay the type out, unless already done. */
3041 if (newtype
!= canonical_type_variant (oldtype
)
3042 && TREE_TYPE (newdecl
) != error_mark_node
3043 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3044 layout_type (TREE_TYPE (newdecl
));
3046 if ((TREE_CODE (newdecl
) == VAR_DECL
3047 || TREE_CODE (newdecl
) == PARM_DECL
3048 || TREE_CODE (newdecl
) == RESULT_DECL
3049 || TREE_CODE (newdecl
) == FIELD_DECL
3050 || TREE_CODE (newdecl
) == TYPE_DECL
)
3051 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3052 layout_decl (newdecl
, 0);
3054 /* Merge the type qualifiers. */
3055 if (TREE_READONLY (newdecl
))
3056 TREE_READONLY (olddecl
) = 1;
3057 if (TREE_THIS_VOLATILE (newdecl
))
3058 TREE_THIS_VOLATILE (olddecl
) = 1;
3060 /* Merge the initialization information. */
3061 if (DECL_INITIAL (newdecl
) == NULL_TREE
3062 && DECL_INITIAL (olddecl
) != NULL_TREE
)
3064 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3065 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
3066 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
3067 if (DECL_LANG_SPECIFIC (newdecl
)
3068 && DECL_LANG_SPECIFIC (olddecl
))
3069 DECL_SAVED_TREE (newdecl
) = DECL_SAVED_TREE (olddecl
);
3072 /* Merge the section attribute.
3073 We want to issue an error if the sections conflict but that must be
3074 done later in decl_attributes since we are called before attributes
3076 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
3077 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
3079 /* Keep the old rtl since we can safely use it, unless it's the
3080 call to abort() used for abstract virtuals. */
3081 if ((DECL_LANG_SPECIFIC (olddecl
)
3082 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3083 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
3084 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3088 /* If cannot merge, then use the new type and qualifiers,
3089 and don't preserve the old rtl. */
3092 /* Clean out any memory we had of the old declaration. */
3093 tree oldstatic
= value_member (olddecl
, static_aggregates
);
3095 TREE_VALUE (oldstatic
) = error_mark_node
;
3097 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
3098 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
3099 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
3100 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
3103 /* Merge the storage class information. */
3104 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
3105 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
3106 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
3107 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
3108 if (! DECL_EXTERNAL (olddecl
))
3109 DECL_EXTERNAL (newdecl
) = 0;
3111 if (DECL_LANG_SPECIFIC (newdecl
) && DECL_LANG_SPECIFIC (olddecl
))
3113 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
3114 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
3115 DECL_COMDAT (newdecl
) |= DECL_COMDAT (olddecl
);
3116 /* Don't really know how much of the language-specific
3117 values we should copy from old to new. */
3118 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
3119 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
3120 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
3121 if (DECL_TEMPLATE_INFO (newdecl
) == NULL_TREE
)
3123 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
3124 DECL_USE_TEMPLATE (newdecl
) = DECL_USE_TEMPLATE (olddecl
);
3126 olddecl_friend
= DECL_FRIEND_P (olddecl
);
3129 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3131 if (DECL_TEMPLATE_INSTANTIATION (olddecl
)
3132 && !DECL_TEMPLATE_INSTANTIATION (newdecl
))
3134 /* If newdecl is not a specialization, then it is not a
3135 template-related function at all. And that means that we
3136 shoud have exited above, returning 0. */
3137 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl
),
3140 if (TREE_USED (olddecl
))
3141 /* From [temp.expl.spec]:
3143 If a template, a member template or the member of a class
3144 template is explicitly specialized then that
3145 specialization shall be declared before the first use of
3146 that specialization that would cause an implicit
3147 instantiation to take place, in every translation unit in
3148 which such a use occurs. */
3149 cp_error ("explicit specialization of %D after first use",
3152 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl
);
3154 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
3156 /* If either decl says `inline', this fn is inline, unless its
3157 definition was passed already. */
3158 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
3159 DECL_INLINE (olddecl
) = 1;
3160 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
3164 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
3165 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
3166 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
3168 if (! types_match
|| new_defines_function
)
3170 /* These need to be copied so that the names are available. */
3171 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
3172 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
3174 if (new_defines_function
)
3175 /* If defining a function declared with other language
3176 linkage, use the previously declared language linkage. */
3177 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
3180 /* If redeclaring a builtin function, and not a definition,
3181 it stays built in. */
3182 if (DECL_BUILT_IN (olddecl
))
3184 DECL_BUILT_IN (newdecl
) = 1;
3185 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
3186 /* If we're keeping the built-in definition, keep the rtl,
3187 regardless of declaration matches. */
3188 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3191 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
3193 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
3194 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
3195 /* Previously saved insns go together with
3196 the function's previous definition. */
3197 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3198 /* Don't clear out the arguments if we're redefining a function. */
3199 if (DECL_ARGUMENTS (olddecl
))
3200 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
3202 if (DECL_LANG_SPECIFIC (olddecl
))
3203 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
3206 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
3208 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
3211 /* Now preserve various other info from the definition. */
3212 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
3213 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
3214 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
3215 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
3217 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3220 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
3221 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
3223 function_size
= sizeof (struct tree_decl
);
3225 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3226 (char *) olddecl
+ sizeof (struct tree_common
),
3227 function_size
- sizeof (struct tree_common
));
3229 /* Can we safely free the storage used by newdecl? */
3231 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3232 & ~ obstack_alignment_mask (&permanent_obstack))
3234 if (DECL_TEMPLATE_INSTANTIATION (newdecl
))
3236 /* If newdecl is a template instantiation, it is possible that
3237 the following sequence of events has occurred:
3239 o A friend function was declared in a class template. The
3240 class template was instantiated.
3242 o The instantiation of the friend declaration was
3243 recorded on the instantiation list, and is newdecl.
3245 o Later, however, instantiate_class_template called pushdecl
3246 on the newdecl to perform name injection. But, pushdecl in
3247 turn called duplicate_decls when it discovered that another
3248 declaration of a global function with the same name already
3251 o Here, in duplicate_decls, we decided to clobber newdecl.
3253 If we're going to do that, we'd better make sure that
3254 olddecl, and not newdecl, is on the list of
3255 instantiations so that if we try to do the instantiation
3256 again we won't get the clobbered declaration. */
3258 tree tmpl
= DECL_TI_TEMPLATE (newdecl
);
3259 tree decls
= DECL_TEMPLATE_SPECIALIZATIONS (tmpl
);
3261 for (; decls
; decls
= TREE_CHAIN (decls
))
3262 if (TREE_VALUE (decls
) == newdecl
)
3263 TREE_VALUE (decls
) = olddecl
;
3266 if (((char *)newdecl
+ ROUND (function_size
) == (char *)nl
3267 && ((char *)newdecl
+ ROUND (function_size
)
3268 + ROUND (sizeof (struct lang_decl
))
3269 == obstack_next_free (&permanent_obstack
)))
3270 || ((char *)newdecl
+ ROUND (function_size
)
3271 == obstack_next_free (&permanent_obstack
)))
3273 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
3274 DECL_LANG_SPECIFIC (olddecl
) = ol
;
3275 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
3277 obstack_free (&permanent_obstack
, newdecl
);
3279 else if (LANG_DECL_PERMANENT (ol
) && ol
!= nl
)
3281 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
3283 /* Save these lang_decls that would otherwise be lost. */
3284 extern tree free_lang_decl_chain
;
3285 tree free_lang_decl
= (tree
) ol
;
3287 if (DECL_LANG_SPECIFIC (olddecl
) == ol
)
3290 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
3291 free_lang_decl_chain
= free_lang_decl
;
3295 /* Storage leak. */;
3301 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3302 (char *) olddecl
+ sizeof (struct tree_common
),
3303 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3304 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3307 DECL_UID (olddecl
) = olddecl_uid
;
3309 DECL_FRIEND_P (olddecl
) = 1;
3311 /* NEWDECL contains the merged attribute lists.
3312 Update OLDDECL to be the same. */
3313 DECL_MACHINE_ATTRIBUTES (olddecl
) = DECL_MACHINE_ATTRIBUTES (newdecl
);
3318 /* Record a decl-node X as belonging to the current lexical scope.
3319 Check for errors (such as an incompatible declaration for the same
3320 name already seen in the same scope).
3322 Returns either X or an old decl for the same name.
3323 If an old decl is returned, it may have been smashed
3324 to agree with what X says. */
3331 register tree name
= DECL_ASSEMBLER_NAME (x
);
3332 register struct binding_level
*b
= current_binding_level
;
3334 if (current_function_decl
&& x
!= current_function_decl
3335 /* A local declaration for a function doesn't constitute nesting. */
3336 && (TREE_CODE (x
) != FUNCTION_DECL
|| DECL_INITIAL (x
))
3337 /* Don't change DECL_CONTEXT of virtual methods. */
3338 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
3339 && ! DECL_CONTEXT (x
))
3340 DECL_CONTEXT (x
) = current_function_decl
;
3341 if (!DECL_CONTEXT (x
))
3342 DECL_CONTEXT (x
) = FROB_CONTEXT (current_namespace
);
3344 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3345 compiler wants to use. */
3346 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
3347 || TREE_CODE (x
) == NAMESPACE_DECL
|| TREE_CODE (x
) == TEMPLATE_TYPE_PARM
3348 || TREE_CODE (x
) == TEMPLATE_TEMPLATE_PARM
)
3349 name
= DECL_NAME (x
);
3354 /* Not needed...see below. */
3358 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3359 name
= TREE_OPERAND (name
, 0);
3361 /* Namespace-scoped variables are not found in the current level. */
3362 if (TREE_CODE (x
) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (x
))
3363 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3365 t
= lookup_name_current_level (name
);
3366 if (t
== error_mark_node
)
3368 /* error_mark_node is 0 for a while during initialization! */
3370 cp_error_at ("`%#D' used prior to declaration", x
);
3373 else if (t
!= NULL_TREE
)
3376 /* This is turned off until I have time to do it right (bpk). */
3377 /* With the code below that uses it... */
3378 file
= DECL_SOURCE_FILE (t
);
3379 line
= DECL_SOURCE_LINE (t
);
3381 if (TREE_CODE (t
) == PARM_DECL
)
3383 if (DECL_CONTEXT (t
) == NULL_TREE
)
3384 fatal ("parse errors have confused me too much");
3386 /* Check for duplicate params. */
3387 if (duplicate_decls (x
, t
))
3390 else if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
3391 || DECL_FUNCTION_TEMPLATE_P (x
))
3392 && is_overloaded_fn (t
))
3393 /* Don't do anything just yet. */;
3394 else if (t
== wchar_decl_node
)
3396 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3397 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
3399 /* Throw away the redeclaration. */
3402 else if (TREE_CODE (t
) != TREE_CODE (x
))
3404 if (duplicate_decls (x
, t
))
3407 else if (duplicate_decls (x
, t
))
3410 /* This is turned off until I have time to do it right (bpk). */
3412 /* Also warn if they did a prototype with `static' on it, but
3413 then later left the `static' off. */
3414 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3416 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3421 cp_warning ("`static' missing from declaration of `%D'",
3423 warning_with_file_and_line (file
, line
,
3424 "previous declaration of `%s'",
3425 decl_as_string (t
, 0));
3428 /* Now fix things so it'll do what they expect. */
3429 if (current_function_decl
)
3430 TREE_PUBLIC (current_function_decl
) = 0;
3432 /* Due to interference in memory reclamation (X may be
3433 obstack-deallocated at this point), we must guard against
3434 one really special case. [jason: This should be handled
3435 by start_function] */
3436 if (current_function_decl
== x
)
3437 current_function_decl
= t
;
3439 if (TREE_CODE (t
) == TYPE_DECL
)
3440 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3441 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3442 check_default_args (t
);
3446 else if (DECL_MAIN_P (x
))
3448 /* A redeclaration of main, but not a duplicate of the
3453 This function shall not be overloaded. */
3454 cp_error_at ("invalid redeclaration of `%D'", t
);
3455 cp_error ("as `%D'", x
);
3456 /* We don't try to push this declaration since that
3462 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3464 t
= push_overloaded_decl (x
, 1);
3465 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3468 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_NAMESPACE_SCOPE_P (x
))
3469 return push_overloaded_decl (x
, 0);
3471 /* If declaring a type as a typedef, copy the type (unless we're
3472 at line 0), and install this TYPE_DECL as the new type's typedef
3473 name. See the extensive comment in ../c-decl.c (pushdecl). */
3474 if (TREE_CODE (x
) == TYPE_DECL
)
3476 tree type
= TREE_TYPE (x
);
3477 if (DECL_SOURCE_LINE (x
) == 0)
3479 if (TYPE_NAME (type
) == 0)
3480 TYPE_NAME (type
) = x
;
3482 else if (type
!= error_mark_node
&& TYPE_NAME (type
) != x
3483 /* We don't want to copy the type when all we're
3484 doing is making a TYPE_DECL for the purposes of
3486 && (!TYPE_NAME (type
)
3487 || TYPE_NAME (type
) != DECL_ABSTRACT_ORIGIN (x
)))
3489 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
3491 DECL_ORIGINAL_TYPE (x
) = type
;
3492 type
= build_type_copy (type
);
3493 TYPE_STUB_DECL (type
) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x
));
3494 TYPE_NAME (type
) = x
;
3495 TREE_TYPE (x
) = type
;
3500 if (type
!= error_mark_node
3502 && TYPE_IDENTIFIER (type
))
3503 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3506 /* Multiple external decls of the same identifier ought to match.
3508 We get warnings about inline functions where they are defined.
3509 We get warnings about other functions from push_overloaded_decl.
3511 Avoid duplicate warnings where they are used. */
3512 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3516 if (IDENTIFIER_NAMESPACE_VALUE (name
) != NULL_TREE
3517 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name
))
3518 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name
))))
3519 decl
= IDENTIFIER_NAMESPACE_VALUE (name
);
3524 /* If different sort of thing, we already gave an error. */
3525 && TREE_CODE (decl
) == TREE_CODE (x
)
3526 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3528 cp_pedwarn ("type mismatch with previous external decl", x
);
3529 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3533 /* This name is new in its binding level.
3534 Install the new declaration and return it. */
3535 if (namespace_bindings_p ())
3537 /* Install a global value. */
3539 /* If the first global decl has external linkage,
3540 warn if we later see static one. */
3541 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
3542 TREE_PUBLIC (name
) = 1;
3544 /* Don't install an artificial TYPE_DECL if we already have
3545 another _DECL with that name. */
3546 if (TREE_CODE (x
) != TYPE_DECL
3548 || ! DECL_ARTIFICIAL (x
))
3550 if (TREE_CODE (x
) == FUNCTION_DECL
)
3552 ((IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
3553 || (IDENTIFIER_GLOBAL_VALUE (name
) == x
), 378);
3554 SET_IDENTIFIER_NAMESPACE_VALUE (name
, x
);
3557 /* Don't forget if the function was used via an implicit decl. */
3558 if (IDENTIFIER_IMPLICIT_DECL (name
)
3559 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3562 /* Don't forget if its address was taken in that way. */
3563 if (IDENTIFIER_IMPLICIT_DECL (name
)
3564 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3565 TREE_ADDRESSABLE (x
) = 1;
3567 /* Warn about mismatches against previous implicit decl. */
3568 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3569 /* If this real decl matches the implicit, don't complain. */
3570 && ! (TREE_CODE (x
) == FUNCTION_DECL
3571 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3573 ("`%D' was previously implicitly declared to return `int'", x
);
3575 /* If new decl is `static' and an `extern' was seen previously,
3577 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3578 warn_extern_redeclared_static (x
, t
);
3582 /* Here to install a non-global value. */
3583 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3584 tree oldglobal
= IDENTIFIER_NAMESPACE_VALUE (name
);
3586 /* Don't install an artificial TYPE_DECL if we already have
3587 another _DECL with that name. */
3588 if (TREE_CODE (x
) != TYPE_DECL
3590 || ! DECL_ARTIFICIAL (x
))
3591 set_identifier_local_value_with_scope (name
, x
, b
);
3593 /* If this is a TYPE_DECL, push it into the type value slot. */
3594 if (TREE_CODE (x
) == TYPE_DECL
)
3595 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3597 /* Clear out any TYPE_DECL shadowed by a namespace so that
3598 we won't think this is a type. The C struct hack doesn't
3599 go through namespaces. */
3600 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3601 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3603 /* If this is an extern function declaration, see if we
3604 have a global definition or declaration for the function. */
3605 if (oldlocal
== NULL_TREE
3606 && DECL_EXTERNAL (x
)
3607 && oldglobal
!= NULL_TREE
3608 && TREE_CODE (x
) == FUNCTION_DECL
3609 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3611 /* We have one. Their types must agree. */
3612 if (decls_match (x
, oldglobal
))
3616 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3617 cp_warning_at ("global declaration `%#D'", oldglobal
);
3620 /* If we have a local external declaration,
3621 and no file-scope declaration has yet been seen,
3622 then if we later have a file-scope decl it must not be static. */
3623 if (oldlocal
== NULL_TREE
3624 && oldglobal
== NULL_TREE
3625 && DECL_EXTERNAL (x
)
3628 TREE_PUBLIC (name
) = 1;
3631 if (DECL_FROM_INLINE (x
))
3632 /* Inline decls shadow nothing. */;
3634 /* Warn if shadowing an argument at the top level of the body. */
3635 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3636 && TREE_CODE (oldlocal
) == PARM_DECL
3637 && TREE_CODE (x
) != PARM_DECL
)
3639 /* Go to where the parms should be and see if we
3641 struct binding_level
*b
= current_binding_level
->level_chain
;
3647 if (b
->parm_flag
== 1)
3648 cp_error ("declaration of `%#D' shadows a parameter", name
);
3650 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3651 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3653 warning ("variable `%s' shadows local",
3654 IDENTIFIER_POINTER (name
));
3655 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3657 /* Maybe warn if shadowing something else. */
3658 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3659 /* No shadow warnings for internally generated vars. */
3660 && ! DECL_ARTIFICIAL (x
)
3661 /* No shadow warnings for vars made for inlining. */
3662 && ! DECL_FROM_INLINE (x
))
3664 char *warnstring
= NULL
;
3666 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3667 warnstring
= "declaration of `%s' shadows a parameter";
3668 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3669 && current_class_ptr
3670 && !TREE_STATIC (name
))
3671 warnstring
= "declaration of `%s' shadows a member of `this'";
3672 else if (oldlocal
!= NULL_TREE
)
3673 warnstring
= "declaration of `%s' shadows previous local";
3674 else if (oldglobal
!= NULL_TREE
)
3675 /* XXX shadow warnings in outer-more namespaces */
3676 warnstring
= "declaration of `%s' shadows global declaration";
3679 warning (warnstring
, IDENTIFIER_POINTER (name
));
3681 /* Check to see if decl redeclares a template parameter. */
3682 if (oldlocal
&& (current_class_type
|| current_function_decl
)
3683 && current_template_parms
)
3685 if (decl_template_parm_p (oldlocal
))
3687 cp_error ("re-using name of template parameter `%T' in this scope", name
);
3688 cp_error_at (" previously declared here `%#D'", oldlocal
);
3693 if (TREE_CODE (x
) == FUNCTION_DECL
)
3694 check_default_args (x
);
3696 /* Keep count of variables in this level with incomplete type. */
3697 if (TREE_CODE (x
) == VAR_DECL
3698 && TREE_TYPE (x
) != error_mark_node
3699 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3700 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3701 /* RTTI TD entries are created while defining the type_info. */
3702 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3703 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3704 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3707 /* Put decls on list in reverse order.
3708 We will reverse them later if necessary. */
3709 TREE_CHAIN (x
) = b
->names
;
3711 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3712 my_friendly_abort (124);
3717 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3718 caller to set DECL_CONTEXT properly. */
3721 pushdecl_with_scope (x
, level
)
3723 struct binding_level
*level
;
3725 register struct binding_level
*b
;
3726 tree function_decl
= current_function_decl
;
3728 current_function_decl
= NULL_TREE
;
3729 if (level
->parm_flag
== 2)
3731 b
= class_binding_level
;
3732 class_binding_level
= level
;
3733 pushdecl_class_level (x
);
3734 class_binding_level
= b
;
3738 b
= current_binding_level
;
3739 current_binding_level
= level
;
3741 current_binding_level
= b
;
3743 current_function_decl
= function_decl
;
3747 /* Like pushdecl, only it places X in the current namespace,
3751 pushdecl_namespace_level (x
)
3754 register struct binding_level
*b
= inner_binding_level
;
3757 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
3759 /* Now, the type_shadowed stack may screw us. Munge it so it does
3761 if (TREE_CODE (x
) == TYPE_DECL
)
3763 tree name
= DECL_NAME (x
);
3765 tree
*ptr
= (tree
*)0;
3766 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3768 tree shadowed
= b
->type_shadowed
;
3769 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3770 if (TREE_PURPOSE (shadowed
) == name
)
3772 ptr
= &TREE_VALUE (shadowed
);
3773 /* Can't break out of the loop here because sometimes
3774 a binding level will have duplicate bindings for
3775 PT names. It's gross, but I haven't time to fix it. */
3778 newval
= TREE_TYPE (x
);
3779 if (ptr
== (tree
*)0)
3781 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3782 up here if this is changed to an assertion. --KR */
3783 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3793 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3797 pushdecl_top_level (x
)
3800 tree cur_namespace
= current_namespace
;
3801 current_namespace
= global_namespace
;
3802 x
= pushdecl_namespace_level (x
);
3803 current_namespace
= cur_namespace
;
3807 /* Make the declaration of X appear in CLASS scope. */
3810 pushdecl_class_level (x
)
3813 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3814 scope looks for the pre-mangled name. */
3815 register tree name
= DECL_NAME (x
);
3819 if (TYPE_BEING_DEFINED (current_class_type
))
3821 /* A name N used in a class S shall refer to the same declaration
3822 in its context and when re-evaluated in the completed scope of S.
3823 Types, enums, and static vars are checked here; other
3824 members are checked in finish_struct. */
3825 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3826 tree ilv
= IDENTIFIER_LOCAL_VALUE (name
);
3829 && flag_optional_diags
3830 /* Don't complain about inherited names. */
3831 && id_in_current_class (name
)
3832 /* Or shadowed tags. */
3833 && !(DECL_DECLARES_TYPE_P (icv
)
3834 && DECL_CONTEXT (icv
) == current_class_type
))
3836 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name
, x
);
3837 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
3841 /* Check to see if decl redeclares a template parameter. */
3842 if (ilv
&& ! decls_match (ilv
, x
)
3843 && (current_class_type
|| current_function_decl
)
3844 && current_template_parms
)
3846 if (decl_template_parm_p (ilv
))
3848 cp_error ("re-using name of template parameter `%T' in this scope", name
);
3849 cp_error_at (" previously declared here `%#D'", ilv
);
3854 push_class_level_binding (name
, x
);
3855 if (TREE_CODE (x
) == TYPE_DECL
)
3857 set_identifier_type_value (name
, TREE_TYPE (x
));
3864 /* This function is used to push the mangled decls for nested types into
3865 the appropriate scope. Previously pushdecl_top_level was used, but that
3866 is incorrect for members of local classes. */
3869 pushdecl_nonclass_level (x
)
3872 struct binding_level
*b
= current_binding_level
;
3874 my_friendly_assert (b
->parm_flag
!= 2, 180);
3877 /* Get out of template binding levels */
3878 while (b
->pseudo_global
)
3882 pushdecl_with_scope (x
, b
);
3886 /* Make the declaration(s) of X appear in CLASS scope
3887 under the name NAME. */
3890 push_class_level_binding (name
, x
)
3894 /* The class_binding_level will be NULL if x is a template
3895 parameter name in a member template. */
3896 if (!class_binding_level
)
3899 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3900 && purpose_member (name
, class_binding_level
->class_shadowed
))
3903 maybe_push_cache_obstack ();
3904 class_binding_level
->class_shadowed
3905 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3906 class_binding_level
->class_shadowed
);
3908 IDENTIFIER_CLASS_VALUE (name
) = x
;
3909 obstack_ptr_grow (&decl_obstack
, x
);
3912 /* Insert another USING_DECL into the current binding level,
3913 returning this declaration. If this is a redeclaration,
3914 do nothing and return NULL_TREE. */
3917 push_using_decl (scope
, name
)
3923 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
3924 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
3925 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
3926 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
3930 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
3931 DECL_INITIAL (decl
) = scope
;
3932 TREE_CHAIN (decl
) = current_binding_level
->usings
;
3933 current_binding_level
->usings
= decl
;
3937 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3938 changed (i.e. there was already a directive), or the fresh
3939 TREE_LIST otherwise. */
3942 push_using_directive (used
)
3945 tree ud
= current_binding_level
->using_directives
;
3946 tree iter
, ancestor
;
3948 /* Check if we already have this. */
3949 if (purpose_member (used
, ud
) != NULL_TREE
)
3952 /* Recursively add all namespaces used. */
3953 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
3954 push_using_directive (TREE_PURPOSE (iter
));
3956 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
3957 ud
= current_binding_level
->using_directives
;
3958 ud
= perm_tree_cons (used
, ancestor
, ud
);
3959 current_binding_level
->using_directives
= ud
;
3963 /* DECL is a FUNCTION_DECL which may have other definitions already in
3964 place. We get around this by making the value of the identifier point
3965 to a list of all the things that want to be referenced by that name. It
3966 is then up to the users of that name to decide what to do with that
3969 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3970 slot. It is dealt with the same way.
3972 The value returned may be a previous declaration if we guessed wrong
3973 about what language DECL should belong to (C or C++). Otherwise,
3974 it's always DECL (and never something that's not a _DECL). */
3977 push_overloaded_decl (decl
, forgettable
)
3981 tree orig_name
= DECL_NAME (decl
);
3983 int doing_global
= (namespace_bindings_p () || ! forgettable
);
3987 old
= namespace_binding (orig_name
, DECL_CONTEXT (decl
));
3988 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3989 && DECL_ARTIFICIAL (old
)
3990 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3992 if (duplicate_decls (decl
, old
))
3999 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
4001 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
4003 current_binding_level
->shadowed
4004 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
4011 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
4013 tree t
= TREE_TYPE (old
);
4014 if (IS_AGGR_TYPE (t
) && warn_shadow
4015 && (! DECL_IN_SYSTEM_HEADER (decl
)
4016 || ! DECL_IN_SYSTEM_HEADER (old
)))
4017 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
4020 else if (is_overloaded_fn (old
))
4024 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
4025 if (decl
== OVL_CURRENT (tmp
)
4026 || duplicate_decls (decl
, OVL_CURRENT (tmp
)))
4027 return OVL_CURRENT (tmp
);
4031 cp_error_at ("previous non-function declaration `%#D'", old
);
4032 cp_error ("conflicts with function declaration `%#D'", decl
);
4037 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4039 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4040 old
= ovl_cons (old
, NULL_TREE
);
4041 old
= ovl_cons (decl
, old
);
4044 /* orig_name is not ambiguous. */
4048 set_namespace_binding (orig_name
, current_namespace
, old
);
4050 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
4055 /* Generate an implicit declaration for identifier FUNCTIONID
4056 as a function of type int (). Print a warning if appropriate. */
4059 implicitly_declare (functionid
)
4063 int temp
= allocation_temporary_p ();
4065 push_obstacks_nochange ();
4067 /* Save the decl permanently so we can warn if definition follows.
4068 In ANSI C, warn_implicit is usually false, so the saves little space.
4069 But in C++, it's usually true, hence the extra code. */
4070 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
4071 end_temporary_allocation ();
4073 /* We used to reuse an old implicit decl here,
4074 but this loses with inline functions because it can clobber
4075 the saved decl chains. */
4076 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4078 DECL_EXTERNAL (decl
) = 1;
4079 TREE_PUBLIC (decl
) = 1;
4081 /* ANSI standard says implicit declarations are in the innermost block.
4082 So we record the decl in the standard fashion. */
4084 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
4087 /* Only one warning per identifier. */
4088 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4090 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4093 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4100 /* Return zero if the declaration NEWDECL is valid
4101 when the declaration OLDDECL (assumed to be for the same name)
4102 has already been seen.
4103 Otherwise return an error message format string with a %s
4104 where the identifier should go. */
4107 redeclaration_error_message (newdecl
, olddecl
)
4108 tree newdecl
, olddecl
;
4110 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4112 /* Because C++ can put things into name space for free,
4113 constructs like "typedef struct foo { ... } foo"
4114 would look like an erroneous redeclaration. */
4115 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
4118 return "redefinition of `%#D'";
4120 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4122 /* If this is a pure function, its olddecl will actually be
4123 the original initialization to `0' (which we force to call
4124 abort()). Don't complain about redefinition in this case. */
4125 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
4128 /* If both functions come from different namespaces, this is not
4129 a redeclaration - this is a conflict with a used function. */
4130 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4131 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4132 return "`%D' conflicts with used function";
4134 /* We'll complain about linkage mismatches in
4135 warn_extern_redeclared_static. */
4137 /* Defining the same name twice is no good. */
4138 if (DECL_INITIAL (olddecl
) != NULL_TREE
4139 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4141 if (DECL_NAME (olddecl
) == NULL_TREE
)
4142 return "`%#D' not declared in class";
4144 return "redefinition of `%#D'";
4148 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4150 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4151 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4152 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4153 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4154 && TYPE_SIZE (TREE_TYPE (newdecl
))
4155 && TYPE_SIZE (TREE_TYPE (olddecl
))))
4156 return "redefinition of `%#D'";
4159 else if (toplevel_bindings_p ())
4161 /* Objects declared at top level: */
4162 /* If at least one is a reference, it's ok. */
4163 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4165 /* Reject two definitions. */
4166 return "redefinition of `%#D'";
4170 /* Objects declared with block scope: */
4171 /* Reject two definitions, and reject a definition
4172 together with an external reference. */
4173 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4174 return "redeclaration of `%#D'";
4179 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4180 Create one if none exists so far for the current function.
4181 This function is called for both label definitions and label references. */
4187 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
4189 if (current_function_decl
== NULL_TREE
)
4191 error ("label `%s' referenced outside of any function",
4192 IDENTIFIER_POINTER (id
));
4196 if ((decl
== NULL_TREE
4197 || DECL_SOURCE_LINE (decl
) == 0)
4198 && (named_label_uses
== NULL
4199 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4200 || named_label_uses
->label_decl
!= decl
))
4202 struct named_label_list
*new_ent
;
4204 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
4205 new_ent
->label_decl
= decl
;
4206 new_ent
->names_in_scope
= current_binding_level
->names
;
4207 new_ent
->binding_level
= current_binding_level
;
4208 new_ent
->lineno_o_goto
= lineno
;
4209 new_ent
->filename_o_goto
= input_filename
;
4210 new_ent
->next
= named_label_uses
;
4211 named_label_uses
= new_ent
;
4214 /* Use a label already defined or ref'd with this name. */
4215 if (decl
!= NULL_TREE
)
4217 /* But not if it is inherited and wasn't declared to be inheritable. */
4218 if (DECL_CONTEXT (decl
) != current_function_decl
4219 && ! C_DECLARED_LABEL_FLAG (decl
))
4220 return shadow_label (id
);
4224 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4226 /* Make sure every label has an rtx. */
4229 /* A label not explicitly declared must be local to where it's ref'd. */
4230 DECL_CONTEXT (decl
) = current_function_decl
;
4232 DECL_MODE (decl
) = VOIDmode
;
4234 /* Say where one reference is to the label,
4235 for the sake of the error if it is not defined. */
4236 DECL_SOURCE_LINE (decl
) = lineno
;
4237 DECL_SOURCE_FILE (decl
) = input_filename
;
4239 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4241 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
4242 named_label_uses
->label_decl
= decl
;
4247 /* Make a label named NAME in the current function,
4248 shadowing silently any that may be inherited from containing functions
4249 or containing scopes.
4251 Note that valid use, if the label being shadowed
4252 comes from another scope in the same function,
4253 requires calling declare_nonlocal_label right away. */
4259 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
4261 if (decl
!= NULL_TREE
)
4263 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4264 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4267 return lookup_label (name
);
4270 /* Define a label, specifying the location in the source file.
4271 Return the LABEL_DECL node for the label, if the definition is valid.
4272 Otherwise return 0. */
4275 define_label (filename
, line
, name
)
4282 if (minimal_parse_mode
)
4284 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4285 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
4287 DECL_SOURCE_LINE (decl
) = line
;
4288 DECL_SOURCE_FILE (decl
) = filename
;
4293 decl
= lookup_label (name
);
4295 /* After labels, make any new cleanups go into their
4296 own new (temporary) binding contour. */
4297 current_binding_level
->more_cleanups_ok
= 0;
4299 /* If label with this name is known from an outer context, shadow it. */
4300 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
4302 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4303 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4304 decl
= lookup_label (name
);
4307 if (name
== get_identifier ("wchar_t"))
4308 cp_pedwarn ("label named wchar_t");
4310 if (DECL_INITIAL (decl
) != NULL_TREE
)
4312 cp_error ("duplicate label `%D'", decl
);
4317 struct named_label_list
*uses
, *prev
;
4320 /* Mark label as having been defined. */
4321 DECL_INITIAL (decl
) = error_mark_node
;
4322 /* Say where in the source. */
4323 DECL_SOURCE_FILE (decl
) = filename
;
4324 DECL_SOURCE_LINE (decl
) = line
;
4327 uses
= named_label_uses
;
4328 while (uses
!= NULL
)
4329 if (uses
->label_decl
== decl
)
4331 struct binding_level
*b
= current_binding_level
;
4334 tree new_decls
= b
->names
;
4335 tree old_decls
= (b
== uses
->binding_level
)
4336 ? uses
->names_in_scope
: NULL_TREE
;
4337 while (new_decls
!= old_decls
)
4339 if (TREE_CODE (new_decls
) == VAR_DECL
4340 /* Don't complain about crossing initialization
4341 of internal entities. They can't be accessed,
4342 and they should be cleaned up
4343 by the time we get to the label. */
4344 && ! DECL_ARTIFICIAL (new_decls
)
4345 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4346 && DECL_INITIAL (new_decls
) != error_mark_node
)
4347 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4351 cp_error ("jump to label `%D'", decl
);
4352 error_with_file_and_line (uses
->filename_o_goto
,
4353 uses
->lineno_o_goto
,
4357 cp_error_at (" crosses initialization of `%#D'",
4360 new_decls
= TREE_CHAIN (new_decls
);
4362 if (b
== uses
->binding_level
)
4368 prev
->next
= uses
->next
;
4370 named_label_uses
= uses
->next
;
4379 current_function_return_value
= NULL_TREE
;
4386 struct binding_level
*level
;
4387 struct cp_switch
*next
;
4390 static struct cp_switch
*switch_stack
;
4396 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4397 p
->level
= current_binding_level
;
4398 p
->next
= switch_stack
;
4405 switch_stack
= switch_stack
->next
;
4408 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4409 /* XXX Note decl is never actually used. (bpk) */
4412 define_case_label ()
4414 tree cleanup
= last_cleanup_this_contour ();
4415 struct binding_level
*b
= current_binding_level
;
4420 static int explained
= 0;
4421 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4422 warning ("where case label appears here");
4425 warning ("(enclose actions of previous case statements requiring");
4426 warning ("destructors in their own binding contours.)");
4431 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4433 tree new_decls
= b
->names
;
4434 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4436 if (TREE_CODE (new_decls
) == VAR_DECL
4437 /* Don't complain about crossing initialization
4438 of internal entities. They can't be accessed,
4439 and they should be cleaned up
4440 by the time we get to the label. */
4441 && ! DECL_ARTIFICIAL (new_decls
)
4442 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4443 && DECL_INITIAL (new_decls
) != error_mark_node
)
4444 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4447 error ("jump to case label");
4449 cp_error_at (" crosses initialization of `%#D'",
4455 /* After labels, make any new cleanups go into their
4456 own new (temporary) binding contour. */
4458 current_binding_level
->more_cleanups_ok
= 0;
4459 current_function_return_value
= NULL_TREE
;
4462 /* Return the list of declarations of the current level.
4463 Note that this list is in reverse order unless/until
4464 you nreverse it; and when you do nreverse it, you must
4465 store the result back using `storedecls' or you will lose. */
4470 return current_binding_level
->names
;
4473 /* Return the list of type-tags (for structs, etc) of the current level. */
4478 return current_binding_level
->tags
;
4481 /* Store the list of declarations of the current level.
4482 This is done for the parameter declarations of a function being defined,
4483 after they are modified in the light of any missing parameters. */
4489 current_binding_level
->names
= decls
;
4492 /* Similarly, store the list of tags of the current level. */
4498 current_binding_level
->tags
= tags
;
4501 /* Given NAME, an IDENTIFIER_NODE,
4502 return the structure (or union or enum) definition for that name.
4503 Searches binding levels from BINDING_LEVEL up to the global level.
4504 If THISLEVEL_ONLY is nonzero, searches only the specified context
4505 (but skips any tag-transparent contexts to find one that is
4506 meaningful for tags).
4507 FORM says which kind of type the caller wants;
4508 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4509 If the wrong kind of type is found, and it's not a template, an error is
4513 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4514 enum tree_code form
;
4516 struct binding_level
*binding_level
;
4519 register struct binding_level
*level
;
4520 /* Non-zero if, we should look past a pseudo-global level, even if
4522 int allow_pseudo_global
= 1;
4524 for (level
= binding_level
; level
; level
= level
->level_chain
)
4527 if (ANON_AGGRNAME_P (name
))
4528 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4530 /* There's no need for error checking here, because
4531 anon names are unique throughout the compilation. */
4532 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4533 return TREE_VALUE (tail
);
4535 else if (level
->namespace_p
)
4536 /* Do namespace lookup. */
4537 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
4539 tree old
= binding_for_name (name
, tail
);
4541 /* If we just skipped past a pseudo global level, even
4542 though THISLEVEL_ONLY, and we find a template class
4543 declaration, then we use the _TYPE node for the
4544 template. See the example below. */
4545 if (thislevel_only
&& !allow_pseudo_global
4546 && old
&& BINDING_VALUE (old
)
4547 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
4548 old
= TREE_TYPE (BINDING_VALUE (old
));
4550 old
= BINDING_TYPE (old
);
4552 /* If it has an original type, it is a typedef, and we
4553 should not return it. */
4554 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
4556 if (old
&& TREE_CODE (old
) != form
4557 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
4559 cp_error ("`%#D' redeclared as %C", old
, form
);
4564 if (thislevel_only
|| tail
== global_namespace
)
4568 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4570 if (TREE_PURPOSE (tail
) == name
)
4572 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4573 /* Should tighten this up; it'll probably permit
4574 UNION_TYPE and a struct template, for example. */
4576 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4578 /* Definition isn't the kind we were looking for. */
4579 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4583 return TREE_VALUE (tail
);
4586 if (thislevel_only
&& ! level
->tag_transparent
)
4588 if (level
->pseudo_global
&& allow_pseudo_global
)
4590 /* We must deal with cases like this:
4592 template <class T> struct S;
4593 template <class T> struct S {};
4595 When looking up `S', for the second declaration, we
4596 would like to find the first declaration. But, we
4597 are in the pseudo-global level created for the
4598 template parameters, rather than the (surrounding)
4599 namespace level. Thus, we keep going one more level,
4600 even though THISLEVEL_ONLY is non-zero. */
4601 allow_pseudo_global
= 0;
4607 if (current_class_type
&& level
->level_chain
->namespace_p
)
4609 /* Try looking in this class's tags before heading into
4610 global binding level. */
4611 tree context
= current_class_type
;
4614 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4618 these_tags
= CLASSTYPE_TAGS (context
);
4619 if (ANON_AGGRNAME_P (name
))
4622 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4624 return TREE_VALUE (tail
);
4625 these_tags
= TREE_CHAIN (these_tags
);
4630 if (TREE_PURPOSE (these_tags
) == name
)
4632 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4634 cp_error ("`%#D' redeclared as %C in class scope",
4635 TREE_VALUE (tail
), form
);
4638 return TREE_VALUE (tail
);
4640 these_tags
= TREE_CHAIN (these_tags
);
4642 /* If this type is not yet complete, then don't
4643 look at its context. */
4644 if (TYPE_SIZE (context
) == NULL_TREE
)
4646 /* Go to next enclosing type, if any. */
4647 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4650 context
= DECL_CONTEXT (context
);
4653 my_friendly_abort (10);
4666 set_current_level_tags_transparency (tags_transparent
)
4667 int tags_transparent
;
4669 current_binding_level
->tag_transparent
= tags_transparent
;
4673 /* Given a type, find the tag that was defined for it and return the tag name.
4674 Otherwise return 0. However, the value can never be 0
4675 in the cases in which this is used.
4677 C++: If NAME is non-zero, this is the new name to install. This is
4678 done when replacing anonymous tags with real tag names. */
4681 lookup_tag_reverse (type
, name
)
4685 register struct binding_level
*level
;
4687 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4690 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4692 if (TREE_VALUE (tail
) == type
)
4695 TREE_PURPOSE (tail
) = name
;
4696 return TREE_PURPOSE (tail
);
4703 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4704 Return the type value, or NULL_TREE if not found. */
4707 lookup_nested_type (type
, context
)
4711 if (context
== NULL_TREE
)
4715 switch (TREE_CODE (context
))
4719 tree ctype
= TREE_TYPE (context
);
4720 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4722 return TREE_VALUE (match
);
4723 context
= DECL_CONTEXT (context
);
4725 /* When we have a nested class whose member functions have
4726 local types (e.g., a set of enums), we'll arrive here
4727 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4728 the enclosing class. Instead, we want to make sure we
4729 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4730 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4731 context
= TREE_CHAIN (context
);
4735 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4736 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4739 my_friendly_abort (12);
4745 /* Look up NAME in the NAMESPACE. */
4748 lookup_namespace_name (namespace, name
)
4749 tree
namespace, name
;
4751 struct tree_binding _b
;
4754 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
4756 /* This happens for A::B<int> when B is a namespace. */
4757 if (TREE_CODE (name
) == NAMESPACE_DECL
)
4760 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4762 val
= binding_init (&_b
);
4763 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4764 return error_mark_node
;
4766 if (BINDING_VALUE (val
))
4768 val
= BINDING_VALUE (val
);
4770 /* If we have a single function from a using decl, pull it out. */
4771 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4772 val
= OVL_FUNCTION (val
);
4776 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4777 return error_mark_node
;
4781 make_typename_type (context
, name
)
4787 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4788 name
= TYPE_IDENTIFIER (name
);
4789 else if (TREE_CODE (name
) == TYPE_DECL
)
4790 name
= DECL_NAME (name
);
4794 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4796 name
= TREE_OPERAND (name
, 0);
4797 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4798 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4800 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4801 my_friendly_abort (2000);
4803 if (TREE_CODE (context
) == NAMESPACE_DECL
)
4805 /* We can get here from typename_sub0 in the explicit_template_type
4806 expansion. Just fail. */
4807 cp_error ("no class template named `%#T' in `%#T'",
4809 return error_mark_node
;
4812 if (! uses_template_parms (context
)
4813 || currently_open_class (context
))
4815 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4817 if (IS_AGGR_TYPE (context
))
4818 t
= lookup_field (context
, name
, 0, 0);
4822 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4823 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4825 cp_error ("no class template named `%#T' in `%#T'",
4827 return error_mark_node
;
4830 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4832 /*entering_scope=*/0);
4836 if (IS_AGGR_TYPE (context
))
4837 t
= lookup_field (context
, name
, 0, 1);
4843 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4844 return error_mark_node
;
4847 return TREE_TYPE (t
);
4851 if (processing_template_decl
)
4852 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4853 t
= make_lang_type (TYPENAME_TYPE
);
4854 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4855 d
= build_decl (TYPE_DECL
, name
, t
);
4856 if (processing_template_decl
)
4859 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4860 TYPE_NAME (TREE_TYPE (d
)) = d
;
4861 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4862 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4863 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4868 /* Select the right _DECL from multiple choices. */
4871 select_decl (binding
, flags
)
4876 val
= BINDING_VALUE (binding
);
4877 if (LOOKUP_NAMESPACES_ONLY (flags
))
4879 /* We are not interested in types. */
4880 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4885 /* If we could have a type and
4886 we have nothing or we need a type and have none. */
4887 if (BINDING_TYPE (binding
)
4888 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4889 && TREE_CODE (val
) != TYPE_DECL
)))
4890 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4891 /* Don't return non-types if we really prefer types. */
4892 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4893 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4899 /* Unscoped lookup of a global, iterate over namespaces, considering
4900 using namespace statements. */
4903 unqualified_namespace_lookup (name
, flags
)
4907 struct tree_binding _binding
;
4908 tree b
= binding_init (&_binding
);
4909 tree initial
= current_decl_namespace();
4910 tree scope
= initial
;
4912 struct binding_level
*level
;
4913 tree val
= NULL_TREE
;
4917 val
= binding_for_name (name
, scope
);
4919 /* Initialize binding for this context. */
4920 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4921 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4923 /* Add all _DECLs seen through local using-directives. */
4924 for (level
= current_binding_level
;
4925 !level
->namespace_p
;
4926 level
= level
->level_chain
)
4927 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4929 /* Give up because of error. */
4932 /* Add all _DECLs seen through global using-directives. */
4933 /* XXX local and global using lists should work equally. */
4937 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4939 /* Give up because of error. */
4941 if (siter
== scope
) break;
4942 siter
= CP_DECL_CONTEXT (siter
);
4945 val
= select_decl (b
, flags
);
4946 if (scope
== global_namespace
)
4948 scope
= CP_DECL_CONTEXT (scope
);
4953 /* Combine prefer_type and namespaces_only into flags. */
4956 lookup_flags (prefer_type
, namespaces_only
)
4957 int prefer_type
, namespaces_only
;
4959 if (namespaces_only
)
4960 return LOOKUP_PREFER_NAMESPACES
;
4961 if (prefer_type
> 1)
4962 return LOOKUP_PREFER_TYPES
;
4963 if (prefer_type
> 0)
4964 return LOOKUP_PREFER_BOTH
;
4968 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4969 ignore it or not. Subroutine of lookup_name_real. */
4972 qualify_lookup (val
, flags
)
4976 if (val
== NULL_TREE
)
4978 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
4980 if ((flags
& LOOKUP_PREFER_TYPES
)
4981 && (TREE_CODE (val
) == TYPE_DECL
4982 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
4983 && DECL_CLASS_TEMPLATE_P (val
))))
4985 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
4990 /* Look up NAME in the current binding level and its superiors in the
4991 namespace of variables, functions and typedefs. Return a ..._DECL
4992 node of some kind representing its definition if there is only one
4993 such declaration, or return a TREE_LIST with all the overloaded
4994 definitions if there are many, or return 0 if it is undefined.
4996 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4997 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4998 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4999 Otherwise we prefer non-TYPE_DECLs.
5001 If NONCLASS is non-zero, we don't look for the NAME in class scope,
5002 using IDENTIFIER_CLASS_VALUE. */
5005 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
5007 int prefer_type
, nonclass
, namespaces_only
;
5011 tree from_obj
= NULL_TREE
;
5012 tree locval
, classval
;
5015 /* Hack: copy flag set by parser, if set. */
5016 if (only_namespace_names
)
5017 namespaces_only
= 1;
5019 if (prefer_type
== -2)
5021 extern int looking_for_typename
;
5022 tree type
= NULL_TREE
;
5025 prefer_type
= looking_for_typename
;
5027 flags
= lookup_flags (prefer_type
, namespaces_only
);
5028 /* During parsing, we need to complain. */
5029 flags
|= LOOKUP_COMPLAIN
;
5030 /* If the next thing is '<', class templates are types. */
5031 if (looking_for_template
)
5032 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5034 /* std:: becomes :: for now. */
5035 if (got_scope
== std_node
)
5036 got_scope
= void_type_node
;
5040 else if (got_object
!= error_mark_node
)
5045 if (type
== error_mark_node
)
5046 return error_mark_node
;
5047 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5048 type
= TREE_TYPE (type
);
5051 type
= complete_type (type
);
5053 if (TREE_CODE (type
) == VOID_TYPE
)
5054 type
= global_namespace
;
5055 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5057 struct tree_binding b
;
5058 val
= binding_init (&b
);
5059 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5061 val
= select_decl (val
, flags
);
5063 else if (! IS_AGGR_TYPE (type
)
5064 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5065 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5066 || TREE_CODE (type
) == TYPENAME_TYPE
)
5067 /* Someone else will give an error about this if needed. */
5069 else if (TYPE_BEING_DEFINED (type
))
5071 val
= IDENTIFIER_CLASS_VALUE (name
);
5072 if (val
&& DECL_CONTEXT (val
) != type
)
5074 struct binding_level
*b
= class_binding_level
;
5075 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5077 tree t
= purpose_member (name
, b
->class_shadowed
);
5078 if (t
&& TREE_VALUE (t
)
5079 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5081 val
= TREE_VALUE (t
);
5086 if (val
== NULL_TREE
)
5087 val
= lookup_field (type
, name
, 0, 1);
5089 else if (type
== current_class_type
)
5090 val
= IDENTIFIER_CLASS_VALUE (name
);
5092 val
= lookup_member (type
, name
, 0, prefer_type
);
5099 else if (got_object
&& val
)
5103 flags
= lookup_flags (prefer_type
, namespaces_only
);
5105 locval
= classval
= NULL_TREE
;
5107 if (! namespace_bindings_p ())
5108 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5110 /* In C++ class fields are between local and global scope,
5111 just before the global scope. */
5112 if (current_class_type
&& ! nonclass
)
5114 classval
= IDENTIFIER_CLASS_VALUE (name
);
5115 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5116 /* Try to find values from base classes if we are presently
5117 defining a type. We are presently only interested in
5119 classval
= lookup_field (current_class_type
, name
, 0, 1);
5121 /* Add implicit 'typename' to types from template bases. lookup_field
5122 will do this for us. If classval is actually from an enclosing
5123 scope, lookup_nested_field will get it for us. */
5124 else if (processing_template_decl
5125 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5126 && ! currently_open_class (DECL_CONTEXT (classval
))
5127 && uses_template_parms (current_class_type
))
5128 classval
= lookup_field (current_class_type
, name
, 0, 1);
5130 /* yylex() calls this with -2, since we should never start digging for
5131 the nested name at the point where we haven't even, for example,
5132 created the COMPONENT_REF or anything like that. */
5133 if (classval
== NULL_TREE
)
5134 classval
= lookup_nested_field (name
, ! yylex
);
5136 classval
= qualify_lookup (classval
, flags
);
5139 if (locval
&& classval
)
5141 if (current_scope () == current_function_decl
5142 && ! hack_decl_function_context (current_function_decl
))
5143 /* Not in a nested function. */
5147 /* This is incredibly horrible. The whole concept of
5148 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5149 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5151 tree lctx
= hack_decl_function_context (locval
);
5152 tree cctx
= hack_decl_function_context (classval
);
5154 if (lctx
== current_scope ())
5156 else if (lctx
== cctx
)
5159 /* I don't know which is right; let's just guess for now. */
5168 val
= unqualified_namespace_lookup (name
, flags
);
5170 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5171 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5172 && TREE_TYPE (TREE_TYPE (val
)))
5174 tree nsval
= unqualified_namespace_lookup (name
, flags
);
5176 if (val
&& nsval
&& TREE_CODE (nsval
) == TYPE_DECL
)
5178 static int explained
;
5179 cp_warning ("namespace-scope type `%#D'", nsval
);
5181 (" is used instead of `%D' from dependent base class", val
);
5185 cp_warning (" (use `typename %D' if that's what you meant)",
5195 /* This should only warn about types used in qualified-ids. */
5196 if (from_obj
&& from_obj
!= val
)
5198 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5199 && TREE_CODE (val
) == TYPE_DECL
5200 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5202 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5203 name
, got_object
, TREE_TYPE (from_obj
));
5204 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5208 /* We don't change val to from_obj if got_object depends on
5209 template parms because that breaks implicit typename for
5210 destructor calls. */
5211 if (! uses_template_parms (got_object
))
5215 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5216 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5218 /* Caller wants a class-or-namespace-name. */
5219 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5221 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5222 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5223 else if (TREE_TYPE (val
) == error_mark_node
)
5224 val
= error_mark_node
;
5226 /* If we have a single function from a using decl, pull it out. */
5227 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5228 val
= OVL_FUNCTION (val
);
5237 lookup_name_nonclass (name
)
5240 return lookup_name_real (name
, 0, 1, 0);
5244 lookup_function_nonclass (name
, args
)
5248 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5252 lookup_name_namespace_only (name
)
5255 /* type-or-namespace, nonclass, namespace_only */
5256 return lookup_name_real (name
, 1, 1, 1);
5260 lookup_name (name
, prefer_type
)
5264 return lookup_name_real (name
, prefer_type
, 0, 0);
5267 /* Similar to `lookup_name' but look only at current binding level. */
5270 lookup_name_current_level (name
)
5273 register tree t
= NULL_TREE
;
5275 if (current_binding_level
->namespace_p
)
5277 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5279 /* extern "C" function() */
5280 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5283 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5285 struct binding_level
*b
= current_binding_level
;
5288 if (purpose_member (name
, b
->shadowed
))
5289 return IDENTIFIER_LOCAL_VALUE (name
);
5300 /* Like lookup_name_current_level, but for types. */
5303 lookup_type_current_level (name
)
5306 register tree t
= NULL_TREE
;
5308 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5310 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5311 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5313 struct binding_level
*b
= current_binding_level
;
5316 if (purpose_member (name
, b
->type_shadowed
))
5317 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5329 begin_only_namespace_names ()
5331 only_namespace_names
= 1;
5335 end_only_namespace_names ()
5337 only_namespace_names
= 0;
5340 /* Arrange for the user to get a source line number, even when the
5341 compiler is going down in flames, so that she at least has a
5342 chance of working around problems in the compiler. We used to
5343 call error(), but that let the segmentation fault continue
5344 through; now, it's much more passive by asking them to send the
5345 maintainers mail about the problem. */
5349 int sig ATTRIBUTE_UNUSED
;
5351 signal (SIGSEGV
, SIG_DFL
);
5353 signal (SIGIOT
, SIG_DFL
);
5356 signal (SIGILL
, SIG_DFL
);
5359 signal (SIGABRT
, SIG_DFL
);
5362 signal (SIGBUS
, SIG_DFL
);
5364 my_friendly_abort (0);
5368 /* Unused -- brendan 970107 */
5369 /* Array for holding types considered "built-in". These types
5370 are output in the module in which `main' is defined. */
5371 static tree
*builtin_type_tdescs_arr
;
5372 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5375 /* Push the declarations of builtin types into the namespace.
5376 RID_INDEX, if < RID_MAX is the index of the builtin type
5377 in the array RID_POINTERS. NAME is the name used when looking
5378 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5381 record_builtin_type (rid_index
, name
, type
)
5386 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5387 tree tdecl
= NULL_TREE
;
5389 if ((int) rid_index
< (int) RID_MAX
)
5390 rname
= ridpointers
[(int) rid_index
];
5392 tname
= get_identifier (name
);
5394 TYPE_BUILT_IN (type
) = 1;
5398 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5399 set_identifier_type_value (tname
, NULL_TREE
);
5400 if ((int) rid_index
< (int) RID_MAX
)
5401 /* Built-in types live in the global namespace. */
5402 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5404 if (rname
!= NULL_TREE
)
5406 if (tname
!= NULL_TREE
)
5408 set_identifier_type_value (rname
, NULL_TREE
);
5409 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5413 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5414 set_identifier_type_value (rname
, NULL_TREE
);
5419 /* Record one of the standard Java types.
5420 * Declare it as having the given NAME.
5421 * If SIZE > 0, it is the size of one of the integral types;
5422 * otherwise it is the negative of the size of one of the other types. */
5425 record_builtin_java_type (name
, size
)
5431 type
= make_signed_type (size
);
5432 else if (size
> -32)
5433 { /* "__java_char" or ""__java_boolean". */
5434 type
= make_unsigned_type (-size
);
5435 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5438 { /* "__java_float" or ""__java_double". */
5439 type
= make_node (REAL_TYPE
);
5440 TYPE_PRECISION (type
) = - size
;
5443 record_builtin_type (RID_MAX
, name
, type
);
5444 decl
= TYPE_NAME (type
);
5445 DECL_IGNORED_P (decl
) = 1;
5446 TYPE_FOR_JAVA (type
) = 1;
5450 /* Push a type into the namespace so that the back-ends ignore it. */
5453 record_unknown_type (type
, name
)
5457 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5458 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5459 DECL_IGNORED_P (decl
) = 1;
5460 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5461 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5462 TYPE_ALIGN (type
) = 1;
5463 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5466 /* Push overloaded decl, in global scope, with one argument so it
5467 can be used as a callback from define_function. */
5470 push_overloaded_decl_1 (x
)
5473 push_overloaded_decl (x
, 0);
5480 auto_function (name
, type
, code
)
5482 enum built_in_function code
;
5484 return define_function
5485 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5486 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5490 /* Create the predefined scalar types of C,
5491 and some nodes representing standard constants (0, 1, (void *)0).
5492 Initialize the global binding level.
5493 Make definitions for built-in primitive functions. */
5496 init_decl_processing ()
5498 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5500 /* Data type of memcpy. */
5501 tree memcpy_ftype
, strlen_ftype
;
5502 int wchar_type_size
;
5504 tree array_domain_type
;
5505 tree vb_off_identifier
= NULL_TREE
;
5506 /* Function type `char *(char *, char *)' and similar ones */
5507 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5508 tree sizetype_endlink
;
5509 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5510 tree void_ftype
, void_ftype_int
, void_ftype_ptr
, ptr_ftype_void
;
5512 /* Have to make these distinct before we try using them. */
5513 lang_name_cplusplus
= get_identifier ("C++");
5514 lang_name_c
= get_identifier ("C");
5515 lang_name_java
= get_identifier ("Java");
5517 /* Enter the global namespace. */
5518 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5519 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5520 current_lang_name
= lang_name_cplusplus
;
5521 push_namespace (get_identifier ("::"));
5522 global_namespace
= current_namespace
;
5523 current_lang_name
= NULL_TREE
;
5525 if (flag_strict_prototype
== 2)
5526 flag_strict_prototype
= pedantic
;
5528 strict_prototypes_lang_c
= flag_strict_prototype
;
5531 current_lang_name
= lang_name_c
;
5533 current_function_decl
= NULL_TREE
;
5534 named_labels
= NULL_TREE
;
5535 named_label_uses
= NULL
;
5536 current_binding_level
= NULL_BINDING_LEVEL
;
5537 free_binding_level
= NULL_BINDING_LEVEL
;
5539 #ifndef __CYGWIN32__
5540 /* Because most segmentation signals can be traced back into user
5541 code, catch them and at least give the user a chance of working
5542 around compiler bugs. */
5543 signal (SIGSEGV
, signal_catch
);
5545 /* We will also catch aborts in the back-end through signal_catch and
5546 give the user a chance to see where the error might be, and to defeat
5547 aborts in the back-end when there have been errors previously in their
5550 signal (SIGIOT
, signal_catch
);
5553 signal (SIGILL
, signal_catch
);
5556 signal (SIGABRT
, signal_catch
);
5559 signal (SIGBUS
, signal_catch
);
5561 #else /* ndef __CYGWIN32__ */
5562 /* Cygwin32 cannot handle catching signals other than
5563 SIGABRT yet. We hope this will cease to be the case soon. */
5565 signal (SIGABRT
, signal_catch
);
5567 #endif /* ndef __CYGWIN32__ */
5569 gcc_obstack_init (&decl_obstack
);
5571 /* Must lay these out before anything else gets laid out. */
5572 error_mark_node
= make_node (ERROR_MARK
);
5573 TREE_PERMANENT (error_mark_node
) = 1;
5574 TREE_TYPE (error_mark_node
) = error_mark_node
;
5575 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5576 TREE_TYPE (error_mark_list
) = error_mark_node
;
5578 /* Make the binding_level structure for global names. */
5580 global_binding_level
= current_binding_level
;
5581 /* The global level is the namespace level of ::. */
5582 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5583 declare_namespace_level ();
5585 this_identifier
= get_identifier (THIS_NAME
);
5586 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5587 ctor_identifier
= get_identifier (CTOR_NAME
);
5588 dtor_identifier
= get_identifier (DTOR_NAME
);
5589 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5590 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5591 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5592 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5593 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5594 if (flag_handle_signatures
)
5596 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5597 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5598 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5601 /* Define `int' and `char' first so that dbx will output them first. */
5603 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5604 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5606 /* Define `char', which is like either `signed char' or `unsigned char'
5607 but not the same as either. */
5611 ? make_signed_type (CHAR_TYPE_SIZE
)
5612 : make_unsigned_type (CHAR_TYPE_SIZE
));
5613 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5615 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5616 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5618 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5619 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5621 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5622 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5623 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5625 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5626 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5628 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5629 record_builtin_type (RID_MAX
, "long long unsigned int",
5630 long_long_unsigned_type_node
);
5631 record_builtin_type (RID_MAX
, "long long unsigned",
5632 long_long_unsigned_type_node
);
5634 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5635 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5636 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5637 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5638 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5640 /* `unsigned long' is the standard type for sizeof.
5641 Note that stddef.h uses `unsigned long',
5642 and this must agree, even if long and int are the same size. */
5644 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5647 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5649 /* Define both `signed char' and `unsigned char'. */
5650 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5651 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5652 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5653 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5655 /* These are types that type_for_size and type_for_mode use. */
5656 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5657 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5658 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5659 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5660 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5661 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5662 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5663 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5664 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5665 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5666 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5667 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5668 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5669 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5670 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5671 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5672 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5673 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5674 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5675 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5677 float_type_node
= make_node (REAL_TYPE
);
5678 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5679 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5680 layout_type (float_type_node
);
5682 double_type_node
= make_node (REAL_TYPE
);
5683 if (flag_short_double
)
5684 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5686 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5687 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5688 layout_type (double_type_node
);
5690 long_double_type_node
= make_node (REAL_TYPE
);
5691 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5692 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5693 layout_type (long_double_type_node
);
5695 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5696 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5697 complex_integer_type_node
));
5698 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5699 layout_type (complex_integer_type_node
);
5701 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5702 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5703 complex_float_type_node
));
5704 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5705 layout_type (complex_float_type_node
);
5707 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5708 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5709 complex_double_type_node
));
5710 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5711 layout_type (complex_double_type_node
);
5713 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5714 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5715 complex_long_double_type_node
));
5716 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5717 layout_type (complex_long_double_type_node
);
5719 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5720 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5721 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5722 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5723 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5724 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5725 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5726 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5728 integer_zero_node
= build_int_2 (0, 0);
5729 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5730 integer_one_node
= build_int_2 (1, 0);
5731 TREE_TYPE (integer_one_node
) = integer_type_node
;
5732 integer_two_node
= build_int_2 (2, 0);
5733 TREE_TYPE (integer_two_node
) = integer_type_node
;
5734 integer_three_node
= build_int_2 (3, 0);
5735 TREE_TYPE (integer_three_node
) = integer_type_node
;
5737 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5738 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5739 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5740 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5741 TYPE_PRECISION (boolean_type_node
) = 1;
5742 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5743 boolean_false_node
= build_int_2 (0, 0);
5744 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5745 boolean_true_node
= build_int_2 (1, 0);
5746 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5748 /* These are needed by stor-layout.c. */
5749 size_zero_node
= size_int (0);
5750 size_one_node
= size_int (1);
5752 signed_size_zero_node
= build_int_2 (0, 0);
5753 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5755 void_type_node
= make_node (VOID_TYPE
);
5756 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5757 layout_type (void_type_node
); /* Uses integer_zero_node. */
5758 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5759 TREE_PARMLIST (void_list_node
) = 1;
5761 null_pointer_node
= build_int_2 (0, 0);
5762 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5763 layout_type (TREE_TYPE (null_pointer_node
));
5765 /* Used for expressions that do nothing, but are not errors. */
5766 void_zero_node
= build_int_2 (0, 0);
5767 TREE_TYPE (void_zero_node
) = void_type_node
;
5769 string_type_node
= build_pointer_type (char_type_node
);
5770 const_string_type_node
5771 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5773 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5776 /* Make a type to be the domain of a few array types
5777 whose domains don't really matter.
5778 200 is small enough that it always fits in size_t
5779 and large enough that it can hold most function names for the
5780 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5781 array_domain_type
= build_index_type (build_int_2 (200, 0));
5783 /* Make a type for arrays of characters.
5784 With luck nothing will ever really depend on the length of this
5786 char_array_type_node
5787 = build_array_type (char_type_node
, array_domain_type
);
5788 /* Likewise for arrays of ints. */
5790 = build_array_type (integer_type_node
, array_domain_type
);
5792 /* This is just some anonymous class type. Nobody should ever
5793 need to look inside this envelope. */
5794 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5796 default_function_type
5797 = build_function_type (integer_type_node
, NULL_TREE
);
5799 ptr_type_node
= build_pointer_type (void_type_node
);
5801 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5803 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5805 endlink
= void_list_node
;
5806 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5807 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5808 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5810 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5811 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5812 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5813 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5814 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5816 void_ftype
= build_function_type (void_type_node
, endlink
);
5817 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5819 = build_function_type (void_type_node
,
5820 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5822 = build_exception_variant (void_ftype_ptr
,
5823 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5826 = build_function_type (float_type_node
,
5827 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5830 = build_function_type (double_type_node
, double_endlink
);
5832 ldouble_ftype_ldouble
5833 = build_function_type (long_double_type_node
,
5834 tree_cons (NULL_TREE
, long_double_type_node
,
5837 double_ftype_double_double
5838 = build_function_type (double_type_node
,
5839 tree_cons (NULL_TREE
, double_type_node
,
5843 = build_function_type (integer_type_node
, int_endlink
);
5846 = build_function_type (long_integer_type_node
,
5847 tree_cons (NULL_TREE
, long_integer_type_node
,
5850 int_ftype_cptr_cptr_sizet
5851 = build_function_type (integer_type_node
,
5852 tree_cons (NULL_TREE
, const_ptr_type_node
,
5853 tree_cons (NULL_TREE
, const_ptr_type_node
,
5854 tree_cons (NULL_TREE
,
5858 string_ftype_ptr_ptr
/* strcpy prototype */
5859 = build_function_type (string_type_node
,
5860 tree_cons (NULL_TREE
, string_type_node
,
5861 tree_cons (NULL_TREE
,
5862 const_string_type_node
,
5865 int_ftype_string_string
/* strcmp prototype */
5866 = build_function_type (integer_type_node
,
5867 tree_cons (NULL_TREE
, const_string_type_node
,
5868 tree_cons (NULL_TREE
,
5869 const_string_type_node
,
5872 strlen_ftype
/* strlen prototype */
5873 = build_function_type (sizetype
,
5874 tree_cons (NULL_TREE
, const_string_type_node
,
5877 memcpy_ftype
/* memcpy prototype */
5878 = build_function_type (ptr_type_node
,
5879 tree_cons (NULL_TREE
, ptr_type_node
,
5880 tree_cons (NULL_TREE
, const_ptr_type_node
,
5881 sizetype_endlink
)));
5883 if (flag_huge_objects
)
5884 delta_type_node
= long_integer_type_node
;
5886 delta_type_node
= short_integer_type_node
;
5888 builtin_function ("__builtin_constant_p", default_function_type
,
5889 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5891 builtin_return_address_fndecl
5892 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5893 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5895 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5896 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5898 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5899 BUILT_IN_ALLOCA
, "alloca");
5900 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5901 /* Define alloca, ffs as builtins.
5902 Declare _exit just to mark it as volatile. */
5903 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5905 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5906 BUILT_IN_ALLOCA
, NULL_PTR
);
5907 /* Suppress error if redefined as a non-function. */
5908 DECL_BUILT_IN_NONANSI (temp
) = 1;
5909 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5910 /* Suppress error if redefined as a non-function. */
5911 DECL_BUILT_IN_NONANSI (temp
) = 1;
5912 temp
= builtin_function ("_exit", void_ftype_int
,
5913 NOT_BUILT_IN
, NULL_PTR
);
5914 TREE_THIS_VOLATILE (temp
) = 1;
5915 TREE_SIDE_EFFECTS (temp
) = 1;
5916 /* Suppress error if redefined as a non-function. */
5917 DECL_BUILT_IN_NONANSI (temp
) = 1;
5920 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5921 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5923 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5925 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5927 builtin_function ("__builtin_labs", long_ftype_long
,
5928 BUILT_IN_LABS
, NULL_PTR
);
5929 builtin_function ("__builtin_saveregs", ptr_ftype
,
5930 BUILT_IN_SAVEREGS
, NULL_PTR
);
5931 builtin_function ("__builtin_classify_type", default_function_type
,
5932 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5933 builtin_function ("__builtin_next_arg", ptr_ftype
,
5934 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5935 builtin_function ("__builtin_args_info", int_ftype_int
,
5936 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5937 builtin_function ("__builtin_setjmp",
5938 build_function_type (integer_type_node
,
5939 tree_cons (NULL_TREE
, ptr_type_node
,
5941 BUILT_IN_SETJMP
, NULL_PTR
);
5942 builtin_function ("__builtin_longjmp",
5943 build_function_type (integer_type_node
,
5944 tree_cons (NULL_TREE
, ptr_type_node
,
5945 tree_cons (NULL_TREE
,
5948 BUILT_IN_LONGJMP
, NULL_PTR
);
5950 /* Untyped call and return. */
5951 builtin_function ("__builtin_apply_args", ptr_ftype
,
5952 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5954 temp
= tree_cons (NULL_TREE
,
5955 build_pointer_type (build_function_type (void_type_node
,
5957 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
5958 builtin_function ("__builtin_apply",
5959 build_function_type (ptr_type_node
, temp
),
5960 BUILT_IN_APPLY
, NULL_PTR
);
5961 builtin_function ("__builtin_return", void_ftype_ptr
,
5962 BUILT_IN_RETURN
, NULL_PTR
);
5964 /* Currently under experimentation. */
5965 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5966 BUILT_IN_MEMCPY
, "memcpy");
5967 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5968 BUILT_IN_MEMCMP
, "memcmp");
5969 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5970 BUILT_IN_STRCMP
, "strcmp");
5971 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5972 BUILT_IN_STRCPY
, "strcpy");
5973 builtin_function ("__builtin_strlen", strlen_ftype
,
5974 BUILT_IN_STRLEN
, "strlen");
5975 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5976 BUILT_IN_FSQRT
, "sqrtf");
5977 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5978 BUILT_IN_FSQRT
, NULL_PTR
);
5979 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
5980 BUILT_IN_FSQRT
, "sqrtl");
5981 builtin_function ("__builtin_sinf", float_ftype_float
,
5982 BUILT_IN_SIN
, "sinf");
5983 builtin_function ("__builtin_sin", double_ftype_double
,
5984 BUILT_IN_SIN
, "sin");
5985 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
5986 BUILT_IN_SIN
, "sinl");
5987 builtin_function ("__builtin_cosf", float_ftype_float
,
5988 BUILT_IN_COS
, "cosf");
5989 builtin_function ("__builtin_cos", double_ftype_double
,
5990 BUILT_IN_COS
, "cos");
5991 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
5992 BUILT_IN_COS
, "cosl");
5994 if (!flag_no_builtin
)
5996 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5997 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5998 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5999 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
6000 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
6002 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
6003 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
6005 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
6007 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
6009 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
6010 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
6011 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
6012 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
6014 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
6015 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
6016 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
6017 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
6018 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
6019 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
6021 /* Declare these functions volatile
6022 to avoid spurious "control drops through" warnings. */
6023 temp
= builtin_function ("abort", void_ftype
,
6024 NOT_BUILT_IN
, NULL_PTR
);
6025 TREE_THIS_VOLATILE (temp
) = 1;
6026 TREE_SIDE_EFFECTS (temp
) = 1;
6027 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6029 DECL_BUILT_IN_NONANSI (temp
) = 1;
6030 temp
= builtin_function ("exit", void_ftype_int
,
6031 NOT_BUILT_IN
, NULL_PTR
);
6032 TREE_THIS_VOLATILE (temp
) = 1;
6033 TREE_SIDE_EFFECTS (temp
) = 1;
6034 DECL_BUILT_IN_NONANSI (temp
) = 1;
6038 /* Support for these has not been written in either expand_builtin
6039 or build_function_call. */
6040 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6041 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6042 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6044 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6046 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6047 BUILT_IN_FMOD
, NULL_PTR
);
6048 builtin_function ("__builtin_frem", double_ftype_double_double
,
6049 BUILT_IN_FREM
, NULL_PTR
);
6050 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6051 BUILT_IN_MEMSET
, NULL_PTR
);
6052 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6054 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6058 /* C++ extensions */
6060 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6061 record_unknown_type (unknown_type_node
, "unknown type");
6063 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6064 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6066 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6068 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6070 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6071 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6073 /* This is for handling opaque types in signatures. */
6074 opaque_type_node
= copy_node (ptr_type_node
);
6075 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6076 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6078 /* This is special for C++ so functions can be overloaded. */
6080 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6081 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6082 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6083 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6085 = TREE_UNSIGNED (wchar_type_node
)
6086 ? unsigned_wchar_type_node
6087 : signed_wchar_type_node
;
6088 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6090 /* Artificial declaration of wchar_t -- can be bashed */
6091 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6093 pushdecl (wchar_decl_node
);
6095 /* This is for wide string constants. */
6096 wchar_array_type_node
6097 = build_array_type (wchar_type_node
, array_domain_type
);
6099 if (flag_vtable_thunks
)
6101 /* Make sure we get a unique function type, so we can give
6102 its pointer type a name. (This wins for gdb.) */
6103 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6104 TREE_TYPE (vfunc_type
) = integer_type_node
;
6105 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6106 layout_type (vfunc_type
);
6108 vtable_entry_type
= build_pointer_type (vfunc_type
);
6112 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6113 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6115 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6117 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6119 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6122 /* Make this part of an invisible union. */
6123 fields
[3] = copy_node (fields
[2]);
6124 TREE_TYPE (fields
[3]) = delta_type_node
;
6125 DECL_NAME (fields
[3]) = delta2_identifier
;
6126 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6127 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6128 TREE_UNSIGNED (fields
[3]) = 0;
6129 TREE_CHAIN (fields
[2]) = fields
[3];
6130 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6132 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6135 = build_array_type (vtable_entry_type
, NULL_TREE
);
6136 layout_type (vtbl_type_node
);
6137 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6138 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6140 /* Simplify life by making a "sigtable_entry_type". Give its
6141 fields names so that the debugger can use them. */
6143 if (flag_handle_signatures
)
6145 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6146 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6148 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6150 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6152 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6154 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6157 /* Set the alignment to the max of the alignment of ptr_type_node and
6158 delta_type_node. Double alignment wastes a word on the Sparc. */
6159 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6160 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6164 /* Make this part of an invisible union. */
6165 fields
[5] = copy_node (fields
[4]);
6166 TREE_TYPE (fields
[5]) = delta_type_node
;
6167 DECL_NAME (fields
[5]) = vt_off_identifier
;
6168 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6169 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6170 TREE_UNSIGNED (fields
[5]) = 0;
6171 TREE_CHAIN (fields
[4]) = fields
[5];
6173 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6174 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6177 std_node
= build_decl (NAMESPACE_DECL
,
6178 get_identifier (flag_honor_std
? "fake std":"std"),
6180 pushdecl (std_node
);
6182 global_type_node
= make_node (LANG_TYPE
);
6183 record_unknown_type (global_type_node
, "global type");
6186 current_lang_name
= lang_name_cplusplus
;
6189 tree bad_alloc_type_node
, newtype
, deltype
;
6191 push_namespace (get_identifier ("std"));
6192 bad_alloc_type_node
= xref_tag
6193 (class_type_node
, get_identifier ("bad_alloc"), 1);
6196 newtype
= build_exception_variant
6197 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6198 deltype
= build_exception_variant
6199 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6200 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6201 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6202 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6203 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6207 = define_function ("__pure_virtual", void_ftype
,
6208 NOT_BUILT_IN
, 0, 0);
6210 /* Perform other language dependent initializations. */
6211 init_class_processing ();
6212 init_init_processing ();
6213 init_search_processing ();
6215 init_rtti_processing ();
6217 if (flag_exceptions
)
6218 init_exception_processing ();
6221 flag_inline_functions
= 0;
6224 if (! supports_one_only ())
6227 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6228 declare_function_name ();
6230 /* Prepare to check format strings against argument lists. */
6231 init_function_format_info ();
6233 /* Show we use EH for cleanups. */
6234 using_eh_for_cleanups ();
6236 print_error_function
= lang_print_error_function
;
6237 lang_get_alias_set
= &c_get_alias_set
;
6239 /* Maintain consistency. Perhaps we should just complain if they
6240 say -fwritable-strings? */
6241 if (flag_writable_strings
)
6242 flag_const_strings
= 0;
6245 /* Function to print any language-specific context for an error message. */
6248 lang_print_error_function (file
)
6251 default_print_error_function (file
);
6252 maybe_print_template_context ();
6255 /* Make a definition for a builtin function named NAME and whose data type
6256 is TYPE. TYPE should be a function type with argument types.
6257 FUNCTION_CODE tells later passes how to compile calls to this function.
6258 See tree.h for its possible values.
6260 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6261 the name to be called if we can't opencode the function. */
6264 define_function (name
, type
, function_code
, pfn
, library_name
)
6267 enum built_in_function function_code
;
6268 void (*pfn
) PROTO((tree
));
6271 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6272 DECL_EXTERNAL (decl
) = 1;
6273 TREE_PUBLIC (decl
) = 1;
6274 DECL_ARTIFICIAL (decl
) = 1;
6276 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6277 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6279 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6280 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6281 function in the namespace. */
6282 if (pfn
) (*pfn
) (decl
);
6284 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6285 make_function_rtl (decl
);
6286 if (function_code
!= NOT_BUILT_IN
)
6288 DECL_BUILT_IN (decl
) = 1;
6289 DECL_FUNCTION_CODE (decl
) = function_code
;
6294 /* Called when a declaration is seen that contains no names to declare.
6295 If its type is a reference to a structure, union or enum inherited
6296 from a containing scope, shadow that tag name for the current scope
6297 with a forward reference.
6298 If its type defines a new named structure or union
6299 or defines an enum, it is valid but we need not do anything here.
6300 Otherwise, it is an error.
6302 C++: may have to grok the declspecs to learn about static,
6303 complain for anonymous unions. */
6306 shadow_tag (declspecs
)
6310 tree ob_modifier
= NULL_TREE
;
6312 register enum tree_code code
, ok_code
= ERROR_MARK
;
6313 register tree t
= NULL_TREE
;
6315 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6317 register tree value
= TREE_VALUE (link
);
6319 code
= TREE_CODE (value
);
6320 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6322 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6324 maybe_process_partial_specialization (value
);
6330 else if (value
== ridpointers
[(int) RID_STATIC
]
6331 || value
== ridpointers
[(int) RID_EXTERN
]
6332 || value
== ridpointers
[(int) RID_AUTO
]
6333 || value
== ridpointers
[(int) RID_REGISTER
]
6334 || value
== ridpointers
[(int) RID_INLINE
]
6335 || value
== ridpointers
[(int) RID_VIRTUAL
]
6336 || value
== ridpointers
[(int) RID_EXPLICIT
])
6337 ob_modifier
= value
;
6340 /* This is where the variables in an anonymous union are
6341 declared. An anonymous union declaration looks like:
6343 because there is no declarator after the union, the parser
6344 sends that declaration here. */
6345 if (ok_code
== UNION_TYPE
6347 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6348 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6349 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6350 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6352 /* See also grok_x_components. */
6355 /* Wipe out memory of synthesized methods */
6356 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6357 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6358 TYPE_HAS_INIT_REF (t
) = 0;
6359 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6360 TYPE_HAS_ASSIGN_REF (t
) = 0;
6361 TYPE_HAS_ASSIGNMENT (t
) = 0;
6362 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6364 q
= &TYPE_METHODS (t
);
6367 if (DECL_ARTIFICIAL (*q
))
6368 *q
= TREE_CHAIN (*q
);
6370 q
= &TREE_CHAIN (*q
);
6373 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6374 function members. */
6375 if (TYPE_METHODS (t
))
6376 error ("an anonymous union cannot have function members");
6378 if (TYPE_FIELDS (t
))
6380 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6382 finish_anon_union (decl
);
6387 /* Anonymous unions are objects, that's why we only check for
6388 inappropriate specifiers in this branch. */
6392 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6393 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6394 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6395 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6396 cp_error ("`%D' can only be specified for constructors",
6399 cp_error ("`%D' can only be specified for objects and functions",
6404 cp_error ("abstract declarator used as declaration");
6405 else if (found_tag
> 1)
6406 pedwarn ("multiple types in one declaration");
6410 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6413 groktypename (typename
)
6416 if (TREE_CODE (typename
) != TREE_LIST
)
6418 return grokdeclarator (TREE_VALUE (typename
),
6419 TREE_PURPOSE (typename
),
6420 TYPENAME
, 0, NULL_TREE
);
6423 /* Decode a declarator in an ordinary declaration or data definition.
6424 This is called as soon as the type information and variable name
6425 have been parsed, before parsing the initializer if any.
6426 Here we create the ..._DECL node, fill in its type,
6427 and put it on the list of decls for the current context.
6428 The ..._DECL node is returned as the value.
6430 Exception: for arrays where the length is not specified,
6431 the type is left null, to be filled in by `cp_finish_decl'.
6433 Function definitions do not come here; they go to start_function
6434 instead. However, external and forward declarations of functions
6435 do go through here. Structure field declarations are done by
6436 grokfield and not through here. */
6438 /* Set this to zero to debug not using the temporary obstack
6439 to parse initializers. */
6440 int debug_temp_inits
= 1;
6443 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6444 tree declarator
, declspecs
;
6446 tree attributes
, prefix_attributes
;
6449 register tree type
, tem
;
6451 extern int have_extern_spec
;
6452 extern int used_extern_spec
;
6455 /* See code below that used this. */
6456 int init_written
= initialized
;
6459 /* This should only be done once on the top most decl. */
6460 if (have_extern_spec
&& !used_extern_spec
)
6462 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6464 used_extern_spec
= 1;
6467 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6469 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6472 type
= TREE_TYPE (decl
);
6474 /* Don't lose if destructors must be executed at file-level. */
6475 if (! processing_template_decl
&& TREE_STATIC (decl
)
6476 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6477 && !TREE_PERMANENT (decl
))
6479 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6480 decl
= copy_node (decl
);
6481 if (TREE_CODE (type
) == ARRAY_TYPE
)
6483 tree itype
= TYPE_DOMAIN (type
);
6484 if (itype
&& ! TREE_PERMANENT (itype
))
6486 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6487 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6488 TREE_TYPE (decl
) = type
;
6495 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6496 ? DECL_CLASS_CONTEXT (decl
)
6497 : DECL_CONTEXT (decl
);
6499 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6500 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6502 /* When parsing the initializer, lookup should use the object's
6504 push_decl_namespace (context
);
6507 /* We are only interested in class contexts, later. */
6508 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6509 context
= NULL_TREE
;
6512 /* Is it valid for this decl to have an initializer at all?
6513 If not, set INITIALIZED to zero, which will indirectly
6514 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6515 switch (TREE_CODE (decl
))
6518 /* typedef foo = bar means give foo the same type as bar.
6519 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6520 Any other case of an initialization in a TYPE_DECL is an error. */
6521 if (pedantic
|| list_length (declspecs
) > 1)
6523 cp_error ("typedef `%D' is initialized", decl
);
6529 cp_error ("function `%#D' is initialized like a variable", decl
);
6534 if (! processing_template_decl
)
6536 if (type
!= error_mark_node
)
6538 if (TYPE_SIZE (type
) != NULL_TREE
6539 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6542 ("variable-sized object `%D' may not be initialized",
6547 if (TREE_CODE (type
) == ARRAY_TYPE
6548 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6551 ("elements of array `%#D' have incomplete type", decl
);
6560 if (! toplevel_bindings_p ()
6561 && DECL_EXTERNAL (decl
))
6562 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6564 DECL_EXTERNAL (decl
) = 0;
6565 if (toplevel_bindings_p ())
6566 TREE_STATIC (decl
) = 1;
6568 /* Tell `pushdecl' this is an initialized decl
6569 even though we don't yet have the initializer expression.
6570 Also tell `cp_finish_decl' it may store the real initializer. */
6571 DECL_INITIAL (decl
) = error_mark_node
;
6574 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6576 if (TREE_CODE (decl
) == VAR_DECL
)
6578 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6579 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6580 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6583 if (DECL_CONTEXT (field
) != context
)
6585 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6586 DECL_CONTEXT (field
), DECL_NAME (decl
),
6587 context
, DECL_NAME (decl
));
6588 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6590 /* Static data member are tricky; an in-class initialization
6591 still doesn't provide a definition, so the in-class
6592 declaration will have DECL_EXTERNAL set, but will have an
6593 initialization. Thus, duplicate_decls won't warn
6594 about this situation, and so we check here. */
6595 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6596 cp_error ("duplicate initialization of %D", decl
);
6597 if (duplicate_decls (decl
, field
))
6603 tree field
= check_classfn (context
, decl
);
6604 if (field
&& duplicate_decls (decl
, field
))
6608 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6609 DECL_IN_AGGR_P (decl
) = 0;
6610 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6611 || CLASSTYPE_USE_TEMPLATE (context
))
6612 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6614 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6615 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6618 pushclass (context
, 2);
6621 /* Set attributes here so if duplicate decl, will have proper attributes. */
6622 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6624 /* Add this decl to the current binding level, but not if it
6625 comes from another scope, e.g. a static member variable.
6626 TEM may equal DECL or it may be a previous decl of the same name. */
6628 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6629 /* Definitions of namespace members outside their namespace are
6631 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6632 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6633 || TREE_CODE (type
) == LANG_TYPE
6634 /* The declaration of template specializations does not affect
6635 the functions available for overload resolution, so we do not
6637 || (TREE_CODE (decl
) == FUNCTION_DECL
6638 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6641 tem
= pushdecl (decl
);
6643 if (processing_template_decl
)
6645 if (! current_function_decl
)
6646 tem
= push_template_decl (tem
);
6647 else if (minimal_parse_mode
)
6649 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6650 copy_to_permanent (declspecs
),
6655 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6656 /* Tell the back-end to use or not use .common as appropriate. If we say
6657 -fconserve-space, we want this to save .data space, at the expense of
6658 wrong semantics. If we say -fno-conserve-space, we want this to
6659 produce errors about redefs; to do this we force variables into the
6661 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6664 if (! processing_template_decl
)
6667 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6668 push_obstacks_nochange ();
6671 /* We have no way of knowing whether the initializer will need to be
6672 evaluated at run-time or not until we've parsed it, so let's just put
6673 it in the permanent obstack. (jason) */
6675 && ! (TREE_CODE (tem
) == PARM_DECL
6676 || (TREE_READONLY (tem
)
6677 && (TREE_CODE (tem
) == VAR_DECL
6678 || TREE_CODE (tem
) == FIELD_DECL
))))
6680 /* When parsing and digesting the initializer,
6681 use temporary storage. Do this even if we will ignore the value. */
6682 if (toplevel_bindings_p () && debug_temp_inits
)
6684 if (processing_template_decl
6685 || TYPE_NEEDS_CONSTRUCTING (type
)
6686 || TREE_CODE (type
) == REFERENCE_TYPE
)
6687 /* In this case, the initializer must lay down in permanent
6688 storage, since it will be saved until `finish_file' is run. */
6691 temporary_allocation ();
6703 tree type
= TREE_TYPE (decl
);
6704 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6706 /* If this type of object needs a cleanup, and control may
6707 jump past it, make a new binding level so that it is cleaned
6708 up only when it is initialized first. */
6709 if (TYPE_NEEDS_DESTRUCTOR (type
)
6710 && current_binding_level
->more_cleanups_ok
== 0)
6711 pushlevel_temporary (1);
6714 /* Is it valid for this decl to have an initializer at all?
6715 If not, set INITIALIZED to zero, which will indirectly
6716 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6718 /* Don't allow initializations for incomplete types except for
6719 arrays which might be completed by the initialization. */
6720 if (type
== error_mark_node
)
6721 ; /* Don't complain again. */
6722 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6723 ; /* A complete type is ok. */
6724 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6726 cp_error ("variable `%#D' has initializer but incomplete type",
6729 type
= TREE_TYPE (decl
) = error_mark_node
;
6731 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6733 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6734 cp_error ("elements of array `%#D' have incomplete type", decl
);
6735 /* else we already gave an error in start_decl. */
6741 && TREE_CODE (decl
) != TYPE_DECL
6742 && TREE_CODE (decl
) != TEMPLATE_DECL
6743 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6745 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6746 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6748 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6750 /* Change the type so that assemble_variable will give
6751 DECL an rtl we can live with: (mem (const_int 0)). */
6752 type
= TREE_TYPE (decl
) = error_mark_node
;
6756 /* If any base type in the hierarchy of TYPE needs a constructor,
6757 then we set initialized to 1. This way any nodes which are
6758 created for the purposes of initializing this aggregate
6759 will live as long as it does. This is necessary for global
6760 aggregates which do not have their initializers processed until
6761 the end of the file. */
6762 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6767 /* We don't do this yet for GNU C++. */
6768 /* For a local variable, define the RTL now. */
6769 if (! toplevel_bindings_p ()
6770 /* But not if this is a duplicate decl
6771 and we preserved the rtl from the previous one
6772 (which may or may not happen). */
6773 && DECL_RTL (tem
) == NULL_RTX
)
6775 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6777 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6778 && DECL_INITIAL (tem
) != NULL_TREE
)
6784 DECL_INITIAL (decl
) = NULL_TREE
;
6787 /* Handle initialization of references.
6788 These three arguments are from `cp_finish_decl', and have the
6789 same meaning here that they do there.
6791 Quotes on semantics can be found in ARM 8.4.3. */
6794 grok_reference_init (decl
, type
, init
)
6795 tree decl
, type
, init
;
6799 if (init
== NULL_TREE
)
6801 if ((DECL_LANG_SPECIFIC (decl
) == 0
6802 || DECL_IN_AGGR_P (decl
) == 0)
6803 && ! DECL_THIS_EXTERN (decl
))
6805 cp_error ("`%D' declared as reference but not initialized", decl
);
6806 if (TREE_CODE (decl
) == VAR_DECL
)
6807 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6812 if (init
== error_mark_node
)
6815 if (TREE_CODE (type
) == REFERENCE_TYPE
6816 && TREE_CODE (init
) == CONSTRUCTOR
)
6818 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6822 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6823 /* decay_conversion is probably wrong for references to functions. */
6824 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6826 if (TREE_CODE (init
) == TREE_LIST
)
6827 init
= build_compound_expr (init
);
6829 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6830 init
= convert_from_reference (init
);
6832 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6833 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6835 /* Note: default conversion is only called in very special cases. */
6836 init
= default_conversion (init
);
6839 tmp
= convert_to_reference
6840 (type
, init
, CONV_IMPLICIT
,
6841 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6843 if (tmp
== error_mark_node
)
6845 else if (tmp
!= NULL_TREE
)
6848 DECL_INITIAL (decl
) = save_expr (init
);
6852 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6856 /* ?? Can this be optimized in some cases to
6857 hand back the DECL_INITIAL slot?? */
6858 if (TYPE_SIZE (TREE_TYPE (type
)))
6860 init
= convert_from_reference (decl
);
6861 if (TREE_PERMANENT (decl
))
6862 init
= copy_to_permanent (init
);
6863 SET_DECL_REFERENCE_SLOT (decl
, init
);
6866 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6868 expand_static_init (decl
, DECL_INITIAL (decl
));
6869 DECL_INITIAL (decl
) = NULL_TREE
;
6874 if (TREE_CODE (decl
) == VAR_DECL
)
6875 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6879 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6880 mucking with forces it does not comprehend (i.e. initialization with a
6881 constructor). If we are at global scope and won't go into COMMON, fill
6882 it in with a dummy CONSTRUCTOR to force the variable into .data;
6883 otherwise we can use error_mark_node. */
6886 obscure_complex_init (decl
, init
)
6889 if (! flag_no_inline
&& TREE_STATIC (decl
))
6891 if (extract_init (decl
, init
))
6895 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6896 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6897 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6901 DECL_INITIAL (decl
) = error_mark_node
;
6906 /* Finish processing of a declaration;
6907 install its line number and initial value.
6908 If the length of an array type is not known before,
6909 it must be determined now, from the initial value, or it is an error.
6911 Call `pop_obstacks' iff NEED_POP is nonzero.
6913 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6914 for aggregates that have constructors alive on the permanent obstack,
6915 so that the global initializing functions can be written at the end.
6917 INIT0 holds the value of an initializer that should be allowed to escape
6920 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6921 if the (init) syntax was used.
6923 For functions that take default parameters, DECL points to its
6924 "maximal" instantiation. `cp_finish_decl' must then also declared its
6925 subsequently lower and lower forms of instantiation, checking for
6926 ambiguity as it goes. This can be sped up later. */
6929 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6936 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
6938 int temporary
= allocation_temporary_p ();
6939 char *asmspec
= NULL
;
6940 int was_readonly
= 0;
6941 int already_used
= 0;
6943 /* If this is 0, then we did not change obstacks. */
6947 error ("assignment (not initialization) in declaration");
6951 /* If a name was specified, get the string. */
6953 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6955 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
6957 cp_error ("Cannot initialize `%D' to namespace `%D'",
6962 if (TREE_CODE (decl
) == VAR_DECL
6963 && DECL_CONTEXT (decl
)
6964 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
6965 && DECL_CONTEXT (decl
) != current_namespace
6968 /* Leave the namespace of the object. */
6969 pop_decl_namespace ();
6972 /* If the type of the thing we are declaring either has
6973 a constructor, or has a virtual function table pointer,
6974 AND its initialization was accepted by `start_decl',
6975 then we stayed on the permanent obstack through the
6976 declaration, otherwise, changed obstacks as GCC would. */
6978 type
= TREE_TYPE (decl
);
6980 if (type
== error_mark_node
)
6982 if (toplevel_bindings_p () && temporary
)
6983 end_temporary_allocation ();
6988 if (processing_template_decl
)
6990 if (init
&& DECL_INITIAL (decl
))
6991 DECL_INITIAL (decl
) = init
;
6992 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
6994 tree stmt
= DECL_VINDEX (decl
);
6995 /* If the decl is declaring a member of a local class (in a
6996 template function), the DECL_VINDEX will either be NULL,
6997 or it will be an actual virtual function index, not a
6999 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
7001 DECL_VINDEX (decl
) = NULL_TREE
;
7002 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
7009 /* Take care of TYPE_DECLs up front. */
7010 if (TREE_CODE (decl
) == TYPE_DECL
)
7012 if (init
&& DECL_INITIAL (decl
))
7014 /* typedef foo = bar; store the type of bar as the type of foo. */
7015 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
7016 DECL_INITIAL (decl
) = init
= NULL_TREE
;
7018 if (type
!= error_mark_node
7019 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
7021 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
7022 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
7023 set_identifier_type_value (DECL_NAME (decl
), type
);
7024 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7026 GNU_xref_decl (current_function_decl
, decl
);
7028 /* If we have installed this as the canonical typedef for this
7029 type, and that type has not been defined yet, delay emitting
7030 the debug information for it, as we will emit it later. */
7031 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7032 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7033 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7035 rest_of_decl_compilation (decl
, NULL_PTR
,
7036 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7039 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7041 ttype
= target_type (type
);
7044 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7045 && TYPE_NEEDS_CONSTRUCTING (type
))
7048 /* Currently, GNU C++ puts constants in text space, making them
7049 impossible to initialize. In the future, one would hope for
7050 an operating system which understood the difference between
7051 initialization and the running of a program. */
7053 TREE_READONLY (decl
) = 0;
7056 if (TREE_CODE (decl
) == FIELD_DECL
)
7058 if (init
&& init
!= error_mark_node
)
7059 my_friendly_assert (TREE_PERMANENT (init
), 147);
7063 /* This must override the asm specifier which was placed
7064 by grokclassfn. Lay this out fresh. */
7065 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7066 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7067 make_decl_rtl (decl
, asmspec
, 0);
7070 /* If `start_decl' didn't like having an initialization, ignore it now. */
7071 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7073 else if (DECL_EXTERNAL (decl
))
7075 else if (TREE_CODE (type
) == REFERENCE_TYPE
7076 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7078 if (TREE_STATIC (decl
))
7079 make_decl_rtl (decl
, NULL_PTR
,
7080 toplevel_bindings_p ()
7081 || pseudo_global_level_p ());
7082 grok_reference_init (decl
, type
, init
);
7086 GNU_xref_decl (current_function_decl
, decl
);
7088 if (TREE_CODE (decl
) == FIELD_DECL
)
7090 else if (TREE_CODE (decl
) == CONST_DECL
)
7092 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7094 DECL_INITIAL (decl
) = init
;
7096 /* This will keep us from needing to worry about our obstacks. */
7097 my_friendly_assert (init
!= NULL_TREE
, 149);
7102 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7104 if (TREE_CODE (type
) == ARRAY_TYPE
)
7105 init
= digest_init (type
, init
, (tree
*) 0);
7106 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7108 if (TYPE_NON_AGGREGATE_CLASS (type
))
7110 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7112 init
= error_mark_node
;
7115 goto dont_use_constructor
;
7120 dont_use_constructor
:
7121 if (TREE_CODE (init
) != TREE_VEC
)
7122 init
= store_init_value (decl
, init
);
7126 /* We must hide the initializer so that expand_decl
7127 won't try to do something it does not understand. */
7128 init
= obscure_complex_init (decl
, init
);
7130 else if (DECL_EXTERNAL (decl
))
7132 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7133 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7136 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7137 ctype
= TREE_TYPE (ctype
);
7138 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7140 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7141 cp_error ("structure `%D' with uninitialized const members", decl
);
7142 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7143 cp_error ("structure `%D' with uninitialized reference members",
7147 if (TREE_CODE (decl
) == VAR_DECL
7148 && !DECL_INITIAL (decl
)
7149 && !TYPE_NEEDS_CONSTRUCTING (type
)
7150 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7151 cp_error ("uninitialized const `%D'", decl
);
7153 if (TYPE_SIZE (type
) != NULL_TREE
7154 && TYPE_NEEDS_CONSTRUCTING (type
))
7155 init
= obscure_complex_init (decl
, NULL_TREE
);
7157 else if (TREE_CODE (decl
) == VAR_DECL
7158 && TREE_CODE (type
) != REFERENCE_TYPE
7159 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7161 /* ``Unless explicitly declared extern, a const object does not have
7162 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7163 However, if it's `const int foo = 1; const int foo;', don't complain
7164 about the second decl, since it does have an initializer before.
7165 We deliberately don't complain about arrays, because they're
7166 supposed to be initialized by a constructor. */
7167 if (! DECL_INITIAL (decl
)
7168 && TREE_CODE (type
) != ARRAY_TYPE
7169 && (!pedantic
|| !current_class_type
))
7170 cp_error ("uninitialized const `%#D'", decl
);
7173 /* For top-level declaration, the initial value was read in
7174 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7175 must go in the permanent obstack; but don't discard the
7176 temporary data yet. */
7178 if (toplevel_bindings_p () && temporary
)
7179 end_temporary_allocation ();
7181 /* Deduce size of array from initialization, if not already known. */
7183 if (TREE_CODE (type
) == ARRAY_TYPE
7184 && TYPE_DOMAIN (type
) == NULL_TREE
7185 && TREE_CODE (decl
) != TYPE_DECL
)
7188 = (TREE_STATIC (decl
)
7189 /* Even if pedantic, an external linkage array
7190 may have incomplete type at first. */
7191 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7192 : !DECL_EXTERNAL (decl
));
7193 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7194 int failure
= complete_array_type (type
, initializer
, do_default
);
7197 cp_error ("initializer fails to determine size of `%D'", decl
);
7202 cp_error ("array size missing in `%D'", decl
);
7203 /* If a `static' var's size isn't known, make it extern as
7204 well as static, so it does not get allocated. If it's not
7205 `static', then don't mark it extern; finish_incomplete_decl
7206 will give it a default size and it will get allocated. */
7207 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7208 DECL_EXTERNAL (decl
) = 1;
7211 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7212 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7214 cp_error ("zero-size array `%D'", decl
);
7216 layout_decl (decl
, 0);
7219 if (TREE_CODE (decl
) == VAR_DECL
)
7221 if (DECL_SIZE (decl
) == NULL_TREE
7222 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7223 layout_decl (decl
, 0);
7225 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7227 /* A static variable with an incomplete type:
7228 that is an error if it is initialized.
7229 Otherwise, let it through, but if it is not `extern'
7230 then it may cause an error message later. */
7231 if (DECL_INITIAL (decl
) != NULL_TREE
)
7232 cp_error ("storage size of `%D' isn't known", decl
);
7235 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7237 /* An automatic variable with an incomplete type: that is an error.
7238 Don't talk about array types here, since we took care of that
7239 message in grokdeclarator. */
7240 cp_error ("storage size of `%D' isn't known", decl
);
7241 TREE_TYPE (decl
) = error_mark_node
;
7243 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7244 /* Let debugger know it should output info for this type. */
7245 note_debug_info_needed (ttype
);
7247 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7248 note_debug_info_needed (DECL_CONTEXT (decl
));
7250 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7251 && DECL_SIZE (decl
) != NULL_TREE
7252 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7254 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7255 constant_expression_warning (DECL_SIZE (decl
));
7257 cp_error ("storage size of `%D' isn't constant", decl
);
7260 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7261 /* Cleanups for static variables are handled by `finish_file'. */
7262 && ! TREE_STATIC (decl
))
7264 int yes
= suspend_momentary ();
7265 cleanup
= maybe_build_cleanup (decl
);
7266 resume_momentary (yes
);
7269 /* PARM_DECLs get cleanups, too. */
7270 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7273 end_temporary_allocation ();
7274 cleanup
= maybe_build_cleanup (decl
);
7276 resume_temporary_allocation ();
7279 /* Output the assembler code and/or RTL code for variables and functions,
7280 unless the type is an undefined structure or union.
7281 If not, it will get done when the type is completed. */
7283 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7285 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7286 || TREE_CODE (decl
) == RESULT_DECL
)
7288 /* ??? FIXME: What about nested classes? */
7289 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7291 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7292 && allocation_temporary_p ());
7295 end_temporary_allocation ();
7297 /* Extern inline function static data has external linkage.
7298 Instead of trying to deal with that, we disable inlining of
7299 such functions. The ASM_WRITTEN check is to avoid hitting this
7300 for __FUNCTION__. */
7301 if (TREE_CODE (decl
) == VAR_DECL
7302 && TREE_STATIC (decl
)
7303 && ! TREE_ASM_WRITTEN (decl
)
7304 && current_function_decl
7305 && DECL_CONTEXT (decl
) == current_function_decl
7306 && DECL_THIS_INLINE (current_function_decl
)
7307 && TREE_PUBLIC (current_function_decl
))
7309 current_function_cannot_inline
7310 = "function with static variable cannot be inline";
7313 else if (TREE_CODE (decl
) == VAR_DECL
7314 && DECL_LANG_SPECIFIC (decl
)
7315 && DECL_COMDAT (decl
))
7317 /* Dynamically initialized vars go into common. */
7318 if (DECL_INITIAL (decl
) == NULL_TREE
7319 || DECL_INITIAL (decl
) == error_mark_node
)
7320 DECL_COMMON (decl
) = 1;
7321 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7323 DECL_COMMON (decl
) = 1;
7324 DECL_INITIAL (decl
) = error_mark_node
;
7328 /* Statically initialized vars are weak or comdat, if
7331 make_decl_one_only (decl
);
7334 /* We can't do anything useful; leave vars for explicit
7336 DECL_EXTERNAL (decl
) = 1;
7337 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7342 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7343 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7344 else if (TREE_CODE (decl
) == VAR_DECL
7345 && TREE_READONLY (decl
)
7346 && DECL_INITIAL (decl
) != NULL_TREE
7347 && DECL_INITIAL (decl
) != error_mark_node
7348 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7350 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7353 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7356 && TREE_STATIC (decl
)
7357 && ! TREE_SIDE_EFFECTS (decl
)
7358 && ! TREE_PUBLIC (decl
)
7359 && ! DECL_EXTERNAL (decl
)
7360 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7361 && DECL_MODE (decl
) != BLKmode
)
7363 /* If this variable is really a constant, then fill its DECL_RTL
7364 slot with something which won't take up storage.
7365 If something later should take its address, we can always give
7366 it legitimate RTL at that time. */
7367 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7368 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7369 TREE_ASM_WRITTEN (decl
) = 1;
7371 else if (toplev
&& ! TREE_PUBLIC (decl
))
7373 /* If this is a static const, change its apparent linkage
7374 if it belongs to a #pragma interface. */
7375 if (!interface_unknown
)
7377 TREE_PUBLIC (decl
) = 1;
7378 DECL_EXTERNAL (decl
) = interface_only
;
7380 make_decl_rtl (decl
, asmspec
, toplev
);
7383 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7385 else if (TREE_CODE (decl
) == VAR_DECL
7386 && DECL_LANG_SPECIFIC (decl
)
7387 && DECL_IN_AGGR_P (decl
))
7389 if (TREE_STATIC (decl
))
7391 if (init
== NULL_TREE
7392 #ifdef DEFAULT_STATIC_DEFS
7393 /* If this code is dead, then users must
7394 explicitly declare static member variables
7395 outside the class def'n as well. */
7396 && TYPE_NEEDS_CONSTRUCTING (type
)
7400 DECL_EXTERNAL (decl
) = 1;
7401 make_decl_rtl (decl
, asmspec
, 1);
7404 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7407 /* Just a constant field. Should not need any rtl. */
7411 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7414 resume_temporary_allocation ();
7416 if (type
!= error_mark_node
7417 && TYPE_LANG_SPECIFIC (type
)
7418 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7419 abstract_virtuals_error (decl
, type
);
7420 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7421 || TREE_CODE (type
) == METHOD_TYPE
)
7422 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7423 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7424 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7426 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7427 signature_error (decl
, type
);
7428 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7429 || TREE_CODE (type
) == METHOD_TYPE
)
7430 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7431 && IS_SIGNATURE (TREE_TYPE (type
)))
7432 signature_error (decl
, TREE_TYPE (type
));
7434 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7436 else if (DECL_EXTERNAL (decl
)
7437 && ! (DECL_LANG_SPECIFIC (decl
)
7438 && DECL_NOT_REALLY_EXTERN (decl
)))
7441 DECL_INITIAL (decl
) = init
;
7443 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7445 /* Cleanups for static variables are handled by `finish_file'. */
7446 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7447 || TYPE_NEEDS_DESTRUCTOR (type
))
7448 expand_static_init (decl
, init
);
7452 /* This is a declared decl which must live until the
7453 end of the binding contour. It may need a cleanup. */
7455 /* Recompute the RTL of a local array now
7456 if it used to be an incomplete type. */
7457 if (was_incomplete
&& ! TREE_STATIC (decl
))
7459 /* If we used it already as memory, it must stay in memory. */
7460 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7461 /* If it's still incomplete now, no init will save it. */
7462 if (DECL_SIZE (decl
) == NULL_TREE
)
7463 DECL_INITIAL (decl
) = NULL_TREE
;
7466 else if (! TREE_ASM_WRITTEN (decl
)
7467 && (TYPE_SIZE (type
) != NULL_TREE
7468 || TREE_CODE (type
) == ARRAY_TYPE
))
7470 /* Do this here, because we did not expand this decl's
7471 rtl in start_decl. */
7472 if (DECL_RTL (decl
) == NULL_RTX
)
7476 /* XXX: Why don't we use decl here? */
7477 /* Ans: Because it was already expanded? */
7478 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7479 cp_error ("parser lost in parsing declaration of `%D'",
7481 /* Cleanup used up here. */
7482 cleanup
= NULL_TREE
;
7486 if (current_binding_level
->is_for_scope
)
7488 struct binding_level
*outer
= current_binding_level
->level_chain
;
7490 /* Check to see if the same name is already bound at
7491 the outer level, either because it was directly declared,
7492 or because a dead for-decl got preserved. In either case,
7493 the code would not have been valid under the ARM
7494 scope rules, so clear is_for_scope for the
7495 current_binding_level.
7497 Otherwise, we need to preserve the temp slot for decl
7498 to last into the outer binding level. */
7500 int handling_dead_for_vars
= 0;
7501 tree link
= outer
->names
;
7502 for (; ; link
= TREE_CHAIN (link
))
7504 if (link
== NULL
&& handling_dead_for_vars
== 0)
7506 link
= outer
->dead_vars_from_for
;
7507 handling_dead_for_vars
= 1;
7511 if (DECL_IN_MEMORY_P (decl
))
7512 preserve_temp_slots (DECL_RTL (decl
));
7515 if (DECL_NAME (link
) == DECL_NAME (decl
))
7517 if (handling_dead_for_vars
)
7520 = purpose_member (DECL_NAME (decl
),
7521 current_binding_level
->shadowed
);
7522 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7523 TREE_VALUE (shadowing
)
7524 = DECL_SHADOWED_FOR_VAR (link
);
7526 current_binding_level
->is_for_scope
= 0;
7532 expand_start_target_temps ();
7534 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7536 /* Compute and store the initial value. */
7537 expand_decl_init (decl
);
7538 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7540 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7542 emit_line_note (DECL_SOURCE_FILE (decl
),
7543 DECL_SOURCE_LINE (decl
));
7544 expand_aggr_init (decl
, init
, flags
);
7547 /* Set this to 0 so we can tell whether an aggregate which
7548 was initialized was ever used. Don't do this if it has a
7549 destructor, so we don't complain about the 'resource
7550 allocation is initialization' idiom. */
7551 /* Now set attribute((unused)) on types so decls of
7552 that type will be marked used. (see TREE_USED, above.)
7553 This avoids the warning problems this particular code
7554 tried to work around. */
7556 if (TYPE_NEEDS_CONSTRUCTING (type
)
7558 && cleanup
== NULL_TREE
7559 && DECL_NAME (decl
))
7560 TREE_USED (decl
) = 0;
7563 TREE_USED (decl
) = 1;
7566 /* Cleanup any temporaries needed for the initial value. */
7567 expand_end_target_temps ();
7569 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7571 /* Store the cleanup, if there was one. */
7574 if (! expand_decl_cleanup (decl
, cleanup
))
7575 cp_error ("parser lost in parsing declaration of `%D'",
7582 /* Undo call to `pushclass' that was done in `start_decl'
7583 due to initialization of qualified member variable.
7584 I.e., Foo::x = 10; */
7586 tree context
= DECL_REAL_CONTEXT (decl
);
7588 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7589 && (TREE_CODE (decl
) == VAR_DECL
7590 /* We also have a pushclass done that we need to undo here
7591 if we're at top level and declare a method. */
7592 || TREE_CODE (decl
) == FUNCTION_DECL
)
7593 /* If size hasn't been set, we're still defining it,
7594 and therefore inside the class body; don't pop
7595 the binding level.. */
7596 && TYPE_SIZE (context
) != NULL_TREE
7597 && context
== current_class_type
)
7604 /* If requested, warn about definitions of large data objects. */
7606 if (warn_larger_than
7607 && ! processing_template_decl
7608 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7609 && !DECL_EXTERNAL (decl
))
7611 register tree decl_size
= DECL_SIZE (decl
);
7613 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7615 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7617 if (units
> larger_than_size
)
7618 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7624 /* Resume permanent allocation, if not within a function. */
7625 /* The corresponding push_obstacks_nochange is in start_decl,
7626 start_method, groktypename, and in grokfield. */
7631 TREE_READONLY (decl
) = 1;
7634 /* This is here for a midend callback from c-common.c */
7637 finish_decl (decl
, init
, asmspec_tree
)
7641 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7645 expand_static_init (decl
, init
)
7649 tree oldstatic
= value_member (decl
, static_aggregates
);
7653 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7654 cp_error ("multiple initializations given for `%D'", decl
);
7656 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7658 /* Emit code to perform this initialization but once. */
7661 /* Remember this information until end of file. */
7662 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7664 /* Emit code to perform this initialization but once. */
7665 temp
= get_temp_name (integer_type_node
, 1);
7666 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7667 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7668 integer_zero_node
, 1), 0);
7669 expand_start_target_temps ();
7671 expand_assignment (temp
, integer_one_node
, 0, 0);
7672 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7673 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7675 expand_aggr_init (decl
, init
, 0);
7676 do_pending_stack_adjust ();
7679 expand_assignment (decl
, init
, 0, 0);
7681 /* Cleanup any temporaries needed for the initial value. */
7682 expand_end_target_temps ();
7684 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7686 tree cleanup
, fcall
;
7687 static tree Atexit
= 0;
7690 tree atexit_fndecl
, PFV
, pfvlist
;
7691 /* Remember this information until end of file. */
7692 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7693 PFV
= build_pointer_type (build_function_type
7694 (void_type_node
, void_list_node
));
7696 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7698 push_lang_context (lang_name_c
);
7700 = builtin_function ("atexit",
7701 build_function_type (void_type_node
,
7703 NOT_BUILT_IN
, NULL_PTR
);
7704 assemble_external (atexit_fndecl
);
7705 Atexit
= default_conversion (atexit_fndecl
);
7706 pop_lang_context ();
7710 cleanup
= start_anon_func ();
7711 expand_expr_stmt (build_cleanup (decl
));
7713 mark_addressable (cleanup
);
7714 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7715 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7716 expand_expr_stmt (fcall
);
7720 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7722 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7723 TREE_STATIC (static_aggregates
) = 1;
7726 /* Resume old (possibly temporary) allocation. */
7731 /* This code takes into account memory allocation
7732 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7733 does not hold for this object, then we must make permanent
7734 the storage currently in the temporary obstack. */
7735 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7736 preserve_initializer ();
7737 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7741 /* Make TYPE a complete type based on INITIAL_VALUE.
7742 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7743 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7746 complete_array_type (type
, initial_value
, do_default
)
7747 tree type
, initial_value
;
7750 register tree maxindex
= NULL_TREE
;
7755 /* Note MAXINDEX is really the maximum index,
7756 one less than the size. */
7757 if (TREE_CODE (initial_value
) == STRING_CST
)
7760 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7761 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7764 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7766 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7767 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7768 for (; elts
; elts
= TREE_CHAIN (elts
))
7770 if (TREE_PURPOSE (elts
))
7771 maxindex
= TREE_PURPOSE (elts
);
7773 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7775 maxindex
= copy_node (maxindex
);
7779 /* Make an error message unless that happened already. */
7780 if (initial_value
!= error_mark_node
)
7783 /* Prevent further error messages. */
7784 maxindex
= build_int_2 (0, 0);
7791 maxindex
= build_int_2 (0, 0);
7799 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7800 if (! TREE_TYPE (maxindex
))
7801 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7803 itype
= TREE_TYPE (initial_value
);
7806 if (itype
&& !TYPE_DOMAIN (itype
))
7807 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7808 /* The type of the main variant should never be used for arrays
7809 of different sizes. It should only ever be completed with the
7810 size of the array. */
7811 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7812 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7815 /* Lay out the type now that we can get the real answer. */
7822 /* Return zero if something is declared to be a member of type
7823 CTYPE when in the context of CUR_TYPE. STRING is the error
7824 message to print in that case. Otherwise, quietly return 1. */
7827 member_function_or_else (ctype
, cur_type
, string
)
7828 tree ctype
, cur_type
;
7831 if (ctype
&& ctype
!= cur_type
)
7833 error (string
, TYPE_NAME_STRING (ctype
));
7839 /* Subroutine of `grokdeclarator'. */
7841 /* Generate errors possibly applicable for a given set of specifiers.
7842 This is for ARM $7.1.2. */
7845 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7848 int virtualp
, quals
, friendp
, raises
, inlinep
;
7851 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7853 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7855 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7858 cp_error_at ("invalid friend declaration", object
);
7860 cp_error_at ("invalid exception specifications", object
);
7863 /* CTYPE is class type, or null if non-class.
7864 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7866 DECLARATOR is the function's name.
7867 VIRTUALP is truthvalue of whether the function is virtual or not.
7868 FLAGS are to be passed through to `grokclassfn'.
7869 QUALS are qualifiers indicating whether the function is `const'
7871 RAISES is a list of exceptions that this function can raise.
7872 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7873 not look, and -1 if we should not call `grokclassfn' at all.
7875 Returns `error_mark_node' if something goes wrong, after issuing
7876 applicable error messages. */
7879 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7880 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7881 template_count
, in_namespace
)
7884 tree orig_declarator
;
7886 enum overload_flags flags
;
7887 tree quals
, raises
, attrlist
;
7888 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7892 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7896 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7897 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7903 type
= build_exception_variant (type
, raises
);
7906 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7907 /* Propagate volatile out from type to decl. */
7908 if (TYPE_VOLATILE (type
))
7909 TREE_THIS_VOLATILE (decl
) = 1;
7911 /* This decl is not from the current namespace. */
7913 set_decl_namespace (decl
, in_namespace
);
7915 /* Should probably propagate const out from type to decl I bet (mrs). */
7918 DECL_STATIC_FUNCTION_P (decl
) = 1;
7919 DECL_CONTEXT (decl
) = ctype
;
7923 DECL_CLASS_CONTEXT (decl
) = ctype
;
7925 if (ctype
== NULL_TREE
&& MAIN_NAME_P (declarator
))
7928 error ("cannot declare `main' to be inline");
7930 error ("cannot declare `main' to be static");
7935 /* Members of anonymous types have no linkage; make them internal. */
7936 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
7941 /* [basic.link]: A name with no linkage (notably, the name of a class
7942 or enumeration declared in a local scope) shall not be used to
7943 declare an entity with linkage.
7945 Only check this for public decls for now. */
7946 t
= no_linkage_check (TREE_TYPE (decl
));
7949 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
7950 cp_pedwarn ("non-local function `%#D' uses anonymous type", decl
);
7952 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
7957 TREE_PUBLIC (decl
) = publicp
;
7960 DECL_INTERFACE_KNOWN (decl
) = 1;
7961 DECL_NOT_REALLY_EXTERN (decl
) = 1;
7965 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7967 DECL_EXTERNAL (decl
) = 1;
7968 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7970 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7971 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7975 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7976 grok_op_properties (decl
, virtualp
, check
< 0);
7978 if (ctype
&& hack_decl_function_context (decl
))
7979 DECL_NO_STATIC_CHAIN (decl
) = 1;
7981 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
7982 if (TREE_PURPOSE (t
)
7983 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
7985 add_defarg_fn (decl
);
7990 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
7994 ("defining explicit specialization `%D' in friend declaration",
7998 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
8000 /* Something like `template <class T> friend void f<T>()'. */
8001 cp_error ("template-id `%D' in declaration of primary template",
8003 return error_mark_node
;
8006 /* A friend declaration of the form friend void f<>(). Record
8007 the information in the TEMPLATE_ID_EXPR. */
8008 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
8009 DECL_TEMPLATE_INFO (decl
)
8010 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
8011 TREE_OPERAND (orig_declarator
, 1),
8016 /* Caller will do the rest of this. */
8020 if (check
&& funcdef_flag
)
8021 DECL_INITIAL (decl
) = error_mark_node
;
8023 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
8026 /* Just handle constructors here. We could do this
8027 inside the following if stmt, but I think
8028 that the code is more legible by breaking this
8029 case out. See comments below for what each of
8030 the following calls is supposed to do. */
8031 DECL_CONSTRUCTOR_P (decl
) = 1;
8033 grokclassfn (ctype
, decl
, flags
, quals
);
8035 decl
= check_explicit_specialization (orig_declarator
, decl
,
8037 2 * (funcdef_flag
!= 0) +
8038 4 * (friendp
!= 0));
8039 if (decl
== error_mark_node
)
8040 return error_mark_node
;
8042 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8045 tmp
= check_classfn (ctype
, decl
);
8047 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8048 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8050 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8051 cp_error ("definition of implicitly-declared `%D'", tmp
);
8052 if (tmp
&& duplicate_decls (decl
, tmp
))
8055 if (! grok_ctor_properties (ctype
, decl
))
8056 return error_mark_node
;
8058 if (check
== 0 && ! current_function_decl
)
8060 /* Assembler names live in the global namespace. */
8061 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
8062 if (tmp
== NULL_TREE
)
8063 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8064 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8065 cp_error ("inconsistent declarations for `%D'", decl
);
8068 duplicate_decls (decl
, tmp
);
8071 make_decl_rtl (decl
, NULL_PTR
, 1);
8078 /* Function gets the ugly name, field gets the nice one.
8079 This call may change the type of the function (because
8080 of default parameters)! */
8081 if (ctype
!= NULL_TREE
)
8082 grokclassfn (ctype
, decl
, flags
, quals
);
8084 decl
= check_explicit_specialization (orig_declarator
, decl
,
8086 2 * (funcdef_flag
!= 0) +
8087 4 * (friendp
!= 0));
8088 if (decl
== error_mark_node
)
8089 return error_mark_node
;
8091 if (ctype
!= NULL_TREE
8092 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8095 tmp
= check_classfn (ctype
, decl
);
8097 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8098 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8100 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8101 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8103 /* Remove the `this' parm added by grokclassfn.
8104 XXX Isn't this done in start_function, too? */
8105 revert_static_member_fn (&decl
, NULL
, NULL
);
8106 last_function_parms
= TREE_CHAIN (last_function_parms
);
8108 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8109 cp_error ("definition of implicitly-declared `%D'", tmp
);
8112 if (!duplicate_decls (decl
, tmp
))
8113 my_friendly_abort (892);
8118 if (ctype
== NULL_TREE
|| check
)
8121 /* Now install the declaration of this function so that others may
8122 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8124 if (! current_function_decl
)
8126 if (!DECL_TEMPLATE_SPECIALIZATION (decl
))
8128 /* We don't do this for specializations since the
8129 equivalent checks will be done later. Also, at this
8130 point the DECL_ASSEMBLER_NAME is not yet fully
8133 /* FIXME: this should only need to look at
8134 IDENTIFIER_GLOBAL_VALUE. */
8135 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
8136 if (tmp
== NULL_TREE
)
8137 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8138 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8139 cp_error ("inconsistent declarations for `%D'", decl
);
8142 duplicate_decls (decl
, tmp
);
8148 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8149 TREE_VALUE (attrlist
));
8150 make_decl_rtl (decl
, NULL_PTR
, 1);
8154 DECL_VIRTUAL_P (decl
) = 1;
8155 if (DECL_VINDEX (decl
) == NULL_TREE
)
8156 DECL_VINDEX (decl
) = error_mark_node
;
8157 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8164 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8167 RID_BIT_TYPE
*specbits_in
;
8173 RID_BIT_TYPE specbits
;
8175 specbits
= *specbits_in
;
8177 if (TREE_CODE (type
) == OFFSET_TYPE
)
8179 /* If you declare a static member so that it
8180 can be initialized, the code will reach here. */
8181 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8182 type
= TREE_TYPE (type
);
8183 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8184 DECL_CONTEXT (decl
) = basetype
;
8185 DECL_CLASS_CONTEXT (decl
) = basetype
;
8186 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8190 tree context
= in_namespace
? in_namespace
: current_namespace
;
8191 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8192 if (context
!= global_namespace
&& namespace_bindings_p ()
8193 && current_lang_name
!= lang_name_c
)
8194 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8199 set_decl_namespace (decl
, in_namespace
);
8201 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8203 DECL_THIS_EXTERN (decl
) = 1;
8204 DECL_EXTERNAL (decl
) = !initialized
;
8207 /* In class context, static means one per class,
8208 public access, and static storage. */
8209 if (DECL_CLASS_SCOPE_P (decl
))
8211 TREE_PUBLIC (decl
) = 1;
8212 TREE_STATIC (decl
) = 1;
8213 DECL_EXTERNAL (decl
) = 0;
8215 /* At top level, either `static' or no s.c. makes a definition
8216 (perhaps tentative), and absence of `static' makes it public. */
8217 else if (toplevel_bindings_p ())
8219 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8220 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8221 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8223 /* Not at top level, only `static' makes a static definition. */
8226 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8227 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8230 if (TREE_PUBLIC (decl
))
8232 /* [basic.link]: A name with no linkage (notably, the name of a class
8233 or enumeration declared in a local scope) shall not be used to
8234 declare an entity with linkage.
8236 Only check this for public decls for now. */
8237 tree t
= no_linkage_check (TREE_TYPE (decl
));
8240 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8241 /* Ignore for now; `enum { foo } e' is pretty common. */;
8243 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8251 /* Create a canonical pointer to member function type. */
8254 build_ptrmemfunc_type (type
)
8261 /* If a canonical type already exists for this type, use it. We use
8262 this method instead of type_hash_canon, because it only does a
8263 simple equality check on the list of field members. */
8265 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8268 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8270 u
= make_lang_type (UNION_TYPE
);
8271 IS_AGGR_TYPE (u
) = 0;
8272 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8273 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8275 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8276 TYPE_NAME (u
) = NULL_TREE
;
8278 t
= make_lang_type (RECORD_TYPE
);
8280 /* Let the front-end know this is a pointer to member function... */
8281 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8282 /* ... and not really an aggregate. */
8283 IS_AGGR_TYPE (t
) = 0;
8285 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8287 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8289 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8290 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8294 /* Zap out the name so that the back-end will give us the debugging
8295 information for this anonymous RECORD_TYPE. */
8296 TYPE_NAME (t
) = NULL_TREE
;
8298 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8300 /* Seems to be wanted. */
8301 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8305 /* Given declspecs and a declarator,
8306 determine the name and type of the object declared
8307 and construct a ..._DECL node for it.
8308 (In one case we can return a ..._TYPE node instead.
8309 For invalid input we sometimes return 0.)
8311 DECLSPECS is a chain of tree_list nodes whose value fields
8312 are the storage classes and type specifiers.
8314 DECL_CONTEXT says which syntactic context this declaration is in:
8315 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8316 FUNCDEF for a function definition. Like NORMAL but a few different
8317 error messages in each case. Return value may be zero meaning
8318 this definition is too screwy to try to parse.
8319 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8320 handle member functions (which have FIELD context).
8321 Return value may be zero meaning this definition is too screwy to
8323 PARM for a parameter declaration (either within a function prototype
8324 or before a function body). Make a PARM_DECL, or return void_type_node.
8325 CATCHPARM for a parameter declaration before a catch clause.
8326 TYPENAME if for a typename (in a cast or sizeof).
8327 Don't make a DECL node; just return the ..._TYPE node.
8328 FIELD for a struct or union field; make a FIELD_DECL.
8329 BITFIELD for a field with specified width.
8330 INITIALIZED is 1 if the decl has an initializer.
8332 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8333 It may also be so in the PARM case, for a prototype where the
8334 argument type is specified but not the name.
8336 This function is where the complicated C meanings of `static'
8337 and `extern' are interpreted.
8339 For C++, if there is any monkey business to do, the function which
8340 calls this one must do it, i.e., prepending instance variables,
8341 renaming overloaded function names, etc.
8343 Note that for this C++, it is an error to define a method within a class
8344 which does not belong to that class.
8346 Except in the case where SCOPE_REFs are implicitly known (such as
8347 methods within a class being redundantly qualified),
8348 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8349 (class_name::decl_name). The caller must also deal with this.
8351 If a constructor or destructor is seen, and the context is FIELD,
8352 then the type gains the attribute TREE_HAS_x. If such a declaration
8353 is erroneous, NULL_TREE is returned.
8355 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8356 function, these are the qualifiers to give to the `this' pointer.
8358 May return void_type_node if the declarator turned out to be a friend.
8359 See grokfield for details. */
8361 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8364 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8367 enum decl_context decl_context
;
8371 RID_BIT_TYPE specbits
;
8374 tree type
= NULL_TREE
;
8378 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8379 int explicit_int
= 0;
8380 int explicit_char
= 0;
8381 int defaulted_int
= 0;
8382 int opaque_typedef
= 0;
8383 tree typedef_decl
= NULL_TREE
;
8385 tree typedef_type
= NULL_TREE
;
8386 int funcdef_flag
= 0;
8387 enum tree_code innermost_code
= ERROR_MARK
;
8390 /* See the code below that used this. */
8391 tree decl_machine_attr
= NULL_TREE
;
8393 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8394 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8395 tree init
= NULL_TREE
;
8397 /* Keep track of what sort of function is being processed
8398 so that we can warn about default return values, or explicit
8399 return values which do not match prescribed defaults. */
8400 enum return_types return_type
= return_normal
;
8402 tree dname
= NULL_TREE
;
8403 tree ctype
= current_class_type
;
8404 tree ctor_return_type
= NULL_TREE
;
8405 enum overload_flags flags
= NO_SPECIAL
;
8406 tree quals
= NULL_TREE
;
8407 tree raises
= NULL_TREE
;
8408 int template_count
= 0;
8409 tree in_namespace
= NULL_TREE
;
8411 RIDBIT_RESET_ALL (specbits
);
8412 if (decl_context
== FUNCDEF
)
8413 funcdef_flag
= 1, decl_context
= NORMAL
;
8414 else if (decl_context
== MEMFUNCDEF
)
8415 funcdef_flag
= -1, decl_context
= FIELD
;
8416 else if (decl_context
== BITFIELD
)
8417 bitfield
= 1, decl_context
= FIELD
;
8419 /* Look inside a declarator for the name being declared
8420 and get it as a string, for an error message. */
8422 tree
*next
= &declarator
;
8426 while (next
&& *next
)
8429 switch (TREE_CODE (decl
))
8433 next
= &TREE_OPERAND (decl
, 0);
8436 case BIT_NOT_EXPR
: /* For C++ destructors! */
8438 tree name
= TREE_OPERAND (decl
, 0);
8439 tree rename
= NULL_TREE
;
8441 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8443 return_type
= return_dtor
;
8444 if (TREE_CODE (name
) == TYPE_DECL
)
8445 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8446 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8447 if (ctype
== NULL_TREE
)
8449 if (current_class_type
== NULL_TREE
)
8451 error ("destructors must be member functions");
8456 tree t
= constructor_name (current_class_name
);
8463 tree t
= constructor_name (ctype
);
8470 cp_error ("destructor `%T' must match class name `%T'",
8472 TREE_OPERAND (decl
, 0) = rename
;
8478 case ADDR_EXPR
: /* C++ reference declaration */
8483 innermost_code
= TREE_CODE (decl
);
8484 next
= &TREE_OPERAND (decl
, 0);
8488 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8490 /* This is actually a variable declaration using constructor
8491 syntax. We need to call start_decl and cp_finish_decl so we
8492 can get the variable initialized... */
8494 *next
= TREE_OPERAND (decl
, 0);
8495 init
= TREE_OPERAND (decl
, 1);
8497 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8498 /* Look for __unused__ attribute */
8499 if (TREE_USED (TREE_TYPE (decl
)))
8500 TREE_USED (decl
) = 1;
8501 finish_decl (decl
, init
, NULL_TREE
);
8504 innermost_code
= TREE_CODE (decl
);
8505 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8506 ctype
= current_class_type
;
8508 && TREE_OPERAND (decl
, 0)
8509 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8510 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8511 == constructor_name_full (ctype
))
8512 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8513 == constructor_name (ctype
)))))
8514 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8515 next
= &TREE_OPERAND (decl
, 0);
8517 if (ctype
!= NULL_TREE
8518 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8519 && decl
== constructor_name (ctype
))
8521 return_type
= return_ctor
;
8522 ctor_return_type
= ctype
;
8527 case TEMPLATE_ID_EXPR
:
8529 tree fns
= TREE_OPERAND (decl
, 0);
8531 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8532 fns
= TREE_OPERAND (fns
, 0);
8534 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8536 else if (is_overloaded_fn (fns
))
8537 dname
= DECL_NAME (get_first_fn (fns
));
8539 my_friendly_abort (0);
8543 case IDENTIFIER_NODE
:
8544 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8551 cp_error ("declarator-id missing; using reserved word `%D'",
8553 name
= IDENTIFIER_POINTER (dname
);
8555 if (! IDENTIFIER_OPNAME_P (dname
)
8556 /* GNU/Linux headers use '__op'. Arrgh. */
8557 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8558 name
= IDENTIFIER_POINTER (dname
);
8561 if (IDENTIFIER_TYPENAME_P (dname
))
8563 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8564 flags
= TYPENAME_FLAG
;
8565 ctor_return_type
= TREE_TYPE (dname
);
8566 return_type
= return_conversion
;
8568 name
= operator_name_string (dname
);
8575 /* Perform error checking, and decide on a ctype. */
8576 tree cname
= TREE_OPERAND (decl
, 0);
8577 if (cname
== NULL_TREE
)
8579 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8582 in_namespace
= TREE_OPERAND (decl
, 0);
8583 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8585 else if (! is_aggr_type (cname
, 1))
8586 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8587 /* Must test TREE_OPERAND (decl, 1), in case user gives
8588 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8589 else if (TREE_OPERAND (decl
, 1)
8590 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8592 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8593 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8595 cp_error ("`%T::%D' is not a valid declarator", cname
,
8596 TREE_OPERAND (decl
, 1));
8597 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8598 cname
, TREE_OPERAND (decl
, 1));
8599 return void_type_node
;
8601 else if (ctype
== NULL_TREE
)
8603 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8604 TREE_OPERAND (decl
, 0) = ctype
;
8607 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8609 cp_error ("type `%T' is not derived from type `%T'",
8611 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8617 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8618 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8619 == constructor_name_full (ctype
))
8620 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8621 == constructor_name (ctype
))))
8622 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8623 next
= &TREE_OPERAND (decl
, 1);
8627 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8628 && constructor_name (ctype
) == decl
)
8630 return_type
= return_ctor
;
8631 ctor_return_type
= ctype
;
8633 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8634 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8635 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8636 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8638 return_type
= return_dtor
;
8639 ctor_return_type
= ctype
;
8641 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8642 next
= &TREE_OPERAND (decl
, 0);
8653 /* Parse error puts this typespec where
8654 a declarator should go. */
8655 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8656 if (TREE_TYPE (decl
) == current_class_type
)
8657 cp_error (" perhaps you want `%T' for a constructor",
8658 current_class_name
);
8659 dname
= DECL_NAME (decl
);
8660 name
= IDENTIFIER_POINTER (dname
);
8662 /* Avoid giving two errors for this. */
8663 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8665 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8672 cp_compiler_error ("`%D' as declarator", decl
);
8673 return 0; /* We used to do a 155 abort here. */
8680 /* A function definition's declarator must have the form of
8681 a function declarator. */
8683 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8686 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8687 && innermost_code
!= CALL_EXPR
8688 && ! (ctype
&& declspecs
== NULL_TREE
))
8690 cp_error ("declaration of `%D' as non-function", dname
);
8691 return void_type_node
;
8694 /* Anything declared one level down from the top level
8695 must be one of the parameters of a function
8696 (because the body is at least two levels down). */
8698 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8699 by not allowing C++ class definitions to specify their parameters
8700 with xdecls (must be spec.d in the parmlist).
8702 Since we now wait to push a class scope until we are sure that
8703 we are in a legitimate method context, we must set oldcname
8704 explicitly (since current_class_name is not yet alive).
8706 We also want to avoid calling this a PARM if it is in a namespace. */
8708 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8709 && ! pseudo_global_level_p ())
8711 struct binding_level
*b
= current_binding_level
;
8712 current_binding_level
= b
->level_chain
;
8713 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8714 decl_context
= PARM
;
8715 current_binding_level
= b
;
8718 /* Look through the decl specs and record which ones appear.
8719 Some typespecs are defined as built-in typenames.
8720 Others, the ones that are modifiers of other types,
8721 are represented by bits in SPECBITS: set the bits for
8722 the modifiers that appear. Storage class keywords are also in SPECBITS.
8724 If there is a typedef name or a type, store the type in TYPE.
8725 This includes builtin typedefs such as `int'.
8727 Set EXPLICIT_INT if the type is `int' or `char' and did not
8728 come from a user typedef.
8730 Set LONGLONG if `long' is mentioned twice.
8732 For C++, constructors and destructors have their own fast treatment. */
8734 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8739 /* Certain parse errors slip through. For example,
8740 `int class;' is not caught by the parser. Try
8741 weakly to recover here. */
8742 if (TREE_CODE (spec
) != TREE_LIST
)
8745 id
= TREE_VALUE (spec
);
8747 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8749 if (id
== ridpointers
[(int) RID_INT
]
8750 || id
== ridpointers
[(int) RID_CHAR
]
8751 || id
== ridpointers
[(int) RID_BOOL
]
8752 || id
== ridpointers
[(int) RID_WCHAR
])
8756 if (id
== ridpointers
[(int) RID_BOOL
])
8757 error ("`bool' is now a keyword");
8759 cp_error ("extraneous `%T' ignored", id
);
8763 if (id
== ridpointers
[(int) RID_INT
])
8765 else if (id
== ridpointers
[(int) RID_CHAR
])
8767 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8771 /* C++ aggregate types. */
8772 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8775 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8777 type
= IDENTIFIER_TYPE_VALUE (id
);
8781 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8783 if (ridpointers
[i
] == id
)
8785 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8787 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8788 pedwarn ("ANSI C++ does not support `long long'");
8790 error ("`long long long' is too long for GCC");
8794 else if (RIDBIT_SETP (i
, specbits
))
8795 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8796 RIDBIT_SET (i
, specbits
);
8801 /* C++ aggregate types. */
8802 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8805 cp_error ("multiple declarations `%T' and `%T'", type
,
8809 type
= TREE_TYPE (id
);
8810 TREE_VALUE (spec
) = type
;
8815 error ("two or more data types in declaration of `%s'", name
);
8816 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8818 register tree t
= lookup_name (id
, 1);
8819 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8820 error ("`%s' fails to be a typedef or built in type",
8821 IDENTIFIER_POINTER (id
));
8824 type
= TREE_TYPE (t
);
8826 /* See the code below that used this. */
8827 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8832 else if (id
!= error_mark_node
)
8833 /* Can't change CLASS nodes into RECORD nodes here! */
8839 typedef_type
= type
;
8841 /* No type at all: default to `int', and set DEFAULTED_INT
8842 because it was not a user-defined typedef.
8843 Except when we have a `typedef' inside a signature, in
8844 which case the type defaults to `unknown type' and is
8845 instantiated when assigning to a signature pointer or ref. */
8847 if (type
== NULL_TREE
8848 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8849 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8850 || RIDBIT_SETP (RID_LONG
, specbits
)
8851 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8853 /* These imply 'int'. */
8854 type
= integer_type_node
;
8858 if (type
== NULL_TREE
)
8861 if (return_type
== return_dtor
)
8862 type
= void_type_node
;
8863 else if (return_type
== return_ctor
)
8864 type
= build_pointer_type (ctor_return_type
);
8865 else if (return_type
== return_conversion
)
8866 type
= ctor_return_type
;
8867 else if (current_class_type
8868 && IS_SIGNATURE (current_class_type
)
8869 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8870 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8874 type
= copy_node (opaque_type_node
);
8880 if (warn_return_type
8881 && return_type
== return_normal
)
8882 /* Save warning until we know what is really going on. */
8883 warn_about_return_type
= 1;
8885 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8886 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8887 else if (innermost_code
!= CALL_EXPR
|| pedantic
8888 || (warn_return_type
&& return_type
== return_normal
))
8890 if (innermost_code
== CALL_EXPR
)
8891 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
8893 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8896 type
= integer_type_node
;
8899 else if (return_type
== return_dtor
)
8901 error ("return type specification for destructor invalid");
8902 type
= void_type_node
;
8904 else if (return_type
== return_ctor
)
8906 error ("return type specification for constructor invalid");
8907 type
= build_pointer_type (ctor_return_type
);
8909 else if (return_type
== return_conversion
)
8911 if (comptypes (type
, ctor_return_type
, 1) == 0)
8912 cp_error ("operator `%T' declared to return `%T'",
8913 ctor_return_type
, type
);
8915 cp_pedwarn ("return type specified for `operator %T'",
8918 type
= ctor_return_type
;
8923 /* Now process the modifiers that were specified
8924 and check for invalid combinations. */
8926 /* Long double is a special combination. */
8928 if (RIDBIT_SETP (RID_LONG
, specbits
)
8929 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
8931 RIDBIT_RESET (RID_LONG
, specbits
);
8932 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
8933 TYPE_VOLATILE (type
));
8936 /* Check all other uses of type modifiers. */
8938 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8939 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8940 || RIDBIT_SETP (RID_LONG
, specbits
)
8941 || RIDBIT_SETP (RID_SHORT
, specbits
))
8945 if (TREE_CODE (type
) == REAL_TYPE
)
8946 error ("short, signed or unsigned invalid for `%s'", name
);
8947 else if (TREE_CODE (type
) != INTEGER_TYPE
)
8948 error ("long, short, signed or unsigned invalid for `%s'", name
);
8949 else if (RIDBIT_SETP (RID_LONG
, specbits
)
8950 && RIDBIT_SETP (RID_SHORT
, specbits
))
8951 error ("long and short specified together for `%s'", name
);
8952 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8953 || RIDBIT_SETP (RID_SHORT
, specbits
))
8955 error ("long or short specified with char for `%s'", name
);
8956 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8957 || RIDBIT_SETP (RID_SHORT
, specbits
))
8958 && TREE_CODE (type
) == REAL_TYPE
)
8959 error ("long or short specified with floating type for `%s'", name
);
8960 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8961 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
8962 error ("signed and unsigned given together for `%s'", name
);
8966 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
8968 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8970 if (flag_pedantic_errors
)
8975 /* Discard the type modifiers if they are invalid. */
8978 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
8979 RIDBIT_RESET (RID_SIGNED
, specbits
);
8980 RIDBIT_RESET (RID_LONG
, specbits
);
8981 RIDBIT_RESET (RID_SHORT
, specbits
);
8986 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
8987 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
8989 error ("complex invalid for `%s'", name
);
8990 RIDBIT_RESET (RID_COMPLEX
, specbits
);
8993 /* Decide whether an integer type is signed or not.
8994 Optionally treat bitfields as signed by default. */
8995 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8996 || (bitfield
&& ! flag_signed_bitfields
8997 && (explicit_int
|| defaulted_int
|| explicit_char
8998 /* A typedef for plain `int' without `signed'
8999 can be controlled just like plain `int'. */
9000 || ! (typedef_decl
!= NULL_TREE
9001 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
9002 && TREE_CODE (type
) != ENUMERAL_TYPE
9003 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
9006 type
= long_long_unsigned_type_node
;
9007 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9008 type
= long_unsigned_type_node
;
9009 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9010 type
= short_unsigned_type_node
;
9011 else if (type
== char_type_node
)
9012 type
= unsigned_char_type_node
;
9013 else if (typedef_decl
)
9014 type
= unsigned_type (type
);
9016 type
= unsigned_type_node
;
9018 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9019 && type
== char_type_node
)
9020 type
= signed_char_type_node
;
9022 type
= long_long_integer_type_node
;
9023 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9024 type
= long_integer_type_node
;
9025 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9026 type
= short_integer_type_node
;
9028 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
9030 /* If we just have "complex", it is equivalent to
9031 "complex double", but if any modifiers at all are specified it is
9032 the complex form of TYPE. E.g, "complex short" is
9033 "complex short int". */
9035 if (defaulted_int
&& ! longlong
9036 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
9037 || RIDBIT_SETP (RID_SHORT
, specbits
)
9038 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9039 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
9040 type
= complex_double_type_node
;
9041 else if (type
== integer_type_node
)
9042 type
= complex_integer_type_node
;
9043 else if (type
== float_type_node
)
9044 type
= complex_float_type_node
;
9045 else if (type
== double_type_node
)
9046 type
= complex_double_type_node
;
9047 else if (type
== long_double_type_node
)
9048 type
= complex_long_double_type_node
;
9050 type
= build_complex_type (type
);
9053 if (return_type
== return_conversion
9054 && (RIDBIT_SETP (RID_CONST
, specbits
)
9055 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9056 cp_error ("`operator %T' cannot be cv-qualified",
9059 /* Set CONSTP if this declaration is `const', whether by
9060 explicit specification or via a typedef.
9061 Likewise for VOLATILEP. */
9063 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9064 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9065 type
= build_type_variant (type
, 0, 0);
9067 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9068 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9069 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9070 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9071 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9073 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9074 staticp
= 1 + (decl_context
== FIELD
);
9076 if (virtualp
&& staticp
== 2)
9078 cp_error ("member `%D' cannot be declared both virtual and static",
9082 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9083 RIDBIT_RESET (RID_FRIEND
, specbits
);
9085 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9087 if (decl_context
== PARM
)
9089 error ("non-member `%s' cannot be declared `mutable'", name
);
9090 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9092 else if (friendp
|| decl_context
== TYPENAME
)
9094 error ("non-object member `%s' cannot be declared `mutable'", name
);
9095 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9099 /* Warn if two storage classes are given. Default to `auto'. */
9101 if (RIDBIT_ANY_SET (specbits
))
9103 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9104 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9105 if (decl_context
== PARM
&& nclasses
> 0)
9106 error ("storage class specifiers invalid in parameter declarations");
9107 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9109 if (decl_context
== PARM
)
9110 error ("typedef declaration invalid in parameter declaration");
9113 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9114 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9117 /* Give error if `virtual' is used outside of class declaration. */
9119 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9121 error ("virtual outside class declaration");
9124 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9126 error ("only members can be declared mutable");
9127 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9130 /* Static anonymous unions are dealt with here. */
9131 if (staticp
&& decl_context
== TYPENAME
9132 && TREE_CODE (declspecs
) == TREE_LIST
9133 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9134 decl_context
= FIELD
;
9136 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9137 is used in a signature member function declaration. */
9138 if (decl_context
== FIELD
9139 && IS_SIGNATURE (current_class_type
)
9140 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9144 error ("`const' specified for signature member function `%s'", name
);
9149 error ("`volatile' specified for signature member function `%s'",
9155 error ("`inline' specified for signature member function `%s'", name
);
9156 /* Later, we'll make signature member functions inline. */
9161 error ("`friend' declaration in signature definition");
9166 error ("`virtual' specified for signature member function `%s'",
9168 /* Later, we'll make signature member functions virtual. */
9173 /* Warn about storage classes that are invalid for certain
9174 kinds of declarations (parameters, typenames, etc.). */
9177 error ("multiple storage classes in declaration of `%s'", name
);
9178 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9180 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9181 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9182 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9184 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9186 else if (decl_context
== FIELD
9187 && ! IS_SIGNATURE (current_class_type
)
9188 /* C++ allows static class elements */
9189 && RIDBIT_SETP (RID_STATIC
, specbits
))
9190 /* C++ also allows inlines and signed and unsigned elements,
9191 but in those cases we don't come in here. */
9195 if (decl_context
== FIELD
)
9197 tree tmp
= NULL_TREE
;
9198 register int op
= 0;
9202 /* Avoid trying to get an operand off an identifier node. */
9203 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9206 tmp
= TREE_OPERAND (declarator
, 0);
9207 op
= IDENTIFIER_OPNAME_P (tmp
);
9209 error ("storage class specified for %s `%s'",
9210 IS_SIGNATURE (current_class_type
)
9212 ? "signature member operator"
9213 : "signature member function")
9214 : (op
? "member operator" : "field"),
9215 op
? operator_name_string (tmp
) : name
);
9218 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9219 ? "storage class specified for parameter `%s'"
9220 : "storage class specified for typename"), name
);
9221 RIDBIT_RESET (RID_REGISTER
, specbits
);
9222 RIDBIT_RESET (RID_AUTO
, specbits
);
9223 RIDBIT_RESET (RID_EXTERN
, specbits
);
9225 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9227 RIDBIT_RESET (RID_STATIC
, specbits
);
9232 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9234 if (toplevel_bindings_p ())
9236 /* It's common practice (and completely valid) to have a const
9237 be initialized and declared extern. */
9239 warning ("`%s' initialized and declared `extern'", name
);
9242 error ("`%s' has both `extern' and initializer", name
);
9244 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9245 && ! toplevel_bindings_p ())
9246 error ("nested function `%s' declared `extern'", name
);
9247 else if (toplevel_bindings_p ())
9249 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9250 error ("top-level declaration of `%s' specifies `auto'", name
);
9253 if (nclasses
> 0 && friendp
)
9254 error ("storage class specifiers invalid in friend function declarations");
9256 /* Now figure out the structure of the declarator proper.
9257 Descend through it, creating more complex types, until we reach
9258 the declared identifier (or NULL_TREE, in an absolute declarator). */
9260 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9261 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9263 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9264 an INDIRECT_REF (for *...),
9265 a CALL_EXPR (for ...(...)),
9266 an identifier (for the name being declared)
9267 or a null pointer (for the place in an absolute declarator
9268 where the name was omitted).
9269 For the last two cases, we have just exited the loop.
9271 For C++ it could also be
9272 a SCOPE_REF (for class :: ...). In this case, we have converted
9273 sensible names to types, and those are the values we use to
9274 qualify the member name.
9275 an ADDR_EXPR (for &...),
9276 a BIT_NOT_EXPR (for destructors)
9278 At this point, TYPE is the type of elements of an array,
9279 or for a function to return, or for a pointer to point to.
9280 After this sequence of ifs, TYPE is the type of the
9281 array or function or pointer, and DECLARATOR has had its
9282 outermost layer removed. */
9284 if (type
== error_mark_node
)
9286 if (TREE_CODE (declarator
) == SCOPE_REF
)
9287 declarator
= TREE_OPERAND (declarator
, 1);
9289 declarator
= TREE_OPERAND (declarator
, 0);
9292 if (quals
!= NULL_TREE
9293 && (declarator
== NULL_TREE
9294 || TREE_CODE (declarator
) != SCOPE_REF
))
9296 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9297 ctype
= TYPE_METHOD_BASETYPE (type
);
9298 if (ctype
!= NULL_TREE
)
9300 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9301 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9302 type
= TREE_TYPE (dummy
);
9306 switch (TREE_CODE (declarator
))
9310 register tree itype
= NULL_TREE
;
9311 register tree size
= TREE_OPERAND (declarator
, 1);
9312 /* The index is a signed object `sizetype' bits wide. */
9313 tree index_type
= signed_type (sizetype
);
9315 declarator
= TREE_OPERAND (declarator
, 0);
9317 /* Check for some types that there cannot be arrays of. */
9319 if (TREE_CODE (type
) == VOID_TYPE
)
9321 cp_error ("declaration of `%D' as array of voids", dname
);
9322 type
= error_mark_node
;
9325 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9327 cp_error ("declaration of `%D' as array of functions", dname
);
9328 type
= error_mark_node
;
9331 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9332 you can't have arrays of references. If we allowed them,
9333 then we'd be saying x[i] is valid for an array x, but
9334 then you'd have to ask: what does `*(x + i)' mean? */
9335 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9337 if (decl_context
== TYPENAME
)
9338 cp_error ("cannot make arrays of references");
9340 cp_error ("declaration of `%D' as array of references",
9342 type
= error_mark_node
;
9345 if (TREE_CODE (type
) == OFFSET_TYPE
)
9347 cp_error ("declaration of `%D' as array of data members",
9349 type
= error_mark_node
;
9352 if (TREE_CODE (type
) == METHOD_TYPE
)
9354 cp_error ("declaration of `%D' as array of function members",
9356 type
= error_mark_node
;
9359 if (size
== error_mark_node
)
9360 type
= error_mark_node
;
9362 if (type
== error_mark_node
)
9367 /* Must suspend_momentary here because the index
9368 type may need to live until the end of the function.
9369 For example, it is used in the declaration of a
9370 variable which requires destructing at the end of
9371 the function; then build_vec_delete will need this
9373 int yes
= suspend_momentary ();
9374 /* Might be a cast. */
9375 if (TREE_CODE (size
) == NOP_EXPR
9376 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9377 size
= TREE_OPERAND (size
, 0);
9379 /* If this involves a template parameter, it'll be
9380 constant, but we don't know what the value is yet. */
9381 if (processing_template_decl
)
9383 itype
= make_node (INTEGER_TYPE
);
9384 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9385 TYPE_MAX_VALUE (itype
) = build_min
9386 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9387 goto dont_grok_size
;
9390 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9391 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9393 cp_error ("size of array `%D' has non-integer type",
9395 size
= integer_one_node
;
9397 if (TREE_READONLY_DECL_P (size
))
9398 size
= decl_constant_value (size
);
9399 if (pedantic
&& integer_zerop (size
))
9400 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9401 if (TREE_CONSTANT (size
))
9403 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9404 int old_pedantic
= pedantic
;
9405 pedantic
= flag_pedantic_errors
= 1;
9406 /* Always give overflow errors on array subscripts. */
9407 constant_expression_warning (size
);
9408 pedantic
= old_pedantic
;
9409 flag_pedantic_errors
= old_flag_pedantic_errors
;
9410 if (INT_CST_LT (size
, integer_zero_node
))
9412 cp_error ("size of array `%D' is negative", dname
);
9413 size
= integer_one_node
;
9421 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9424 cp_pedwarn ("ANSI C++ forbids variable-size array");
9429 = fold (build_binary_op (MINUS_EXPR
,
9430 cp_convert (index_type
, size
),
9431 cp_convert (index_type
,
9432 integer_one_node
), 1));
9433 if (! TREE_CONSTANT (itype
))
9434 itype
= variable_size (itype
);
9435 else if (TREE_OVERFLOW (itype
))
9437 error ("overflow in array dimension");
9438 TREE_OVERFLOW (itype
) = 0;
9441 /* If we're a parm, we need to have a permanent type so
9442 mangling checks for re-use will work right. If both the
9443 element and index types are permanent, the array type
9445 if (decl_context
== PARM
9446 && allocation_temporary_p () && TREE_PERMANENT (type
))
9448 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9449 itype
= build_index_type (itype
);
9453 itype
= build_index_type (itype
);
9456 resume_momentary (yes
);
9459 /* Build the array type itself, then merge any constancy or
9460 volatility into the target type. We must do it in this order
9461 to ensure that the TYPE_MAIN_VARIANT field of the array type
9462 is set correctly. */
9464 type
= build_cplus_array_type (type
, itype
);
9465 if (constp
|| volatilep
)
9466 type
= cp_build_type_variant (type
, constp
, volatilep
);
9476 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9477 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9479 /* Declaring a function type.
9480 Make sure we have a valid type for the function to return. */
9482 /* Is this an error? Should they be merged into TYPE here? */
9483 if (pedantic
&& (constp
|| volatilep
))
9484 pedwarn ("function declared to return const or volatile result");
9486 /* Merge any constancy or volatility into the function return
9489 if (constp
|| volatilep
)
9491 type
= cp_build_type_variant (type
, constp
, volatilep
);
9492 if (IS_AGGR_TYPE (type
))
9493 build_pointer_type (type
);
9499 /* Warn about some types functions can't return. */
9501 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9503 error ("`%s' declared as function returning a function", name
);
9504 type
= integer_type_node
;
9506 if (TREE_CODE (type
) == ARRAY_TYPE
)
9508 error ("`%s' declared as function returning an array", name
);
9509 type
= integer_type_node
;
9512 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9513 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9515 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9518 /* Pick up type qualifiers which should be applied to `this'. */
9519 quals
= TREE_OPERAND (declarator
, 2);
9521 /* Pick up the exception specifications. */
9522 raises
= TREE_TYPE (declarator
);
9524 /* Say it's a definition only for the CALL_EXPR
9525 closest to the identifier. */
9528 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9529 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9530 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9532 if (ctype
== NULL_TREE
9533 && decl_context
== FIELD
9535 && (friendp
== 0 || dname
== current_class_name
))
9536 ctype
= current_class_type
;
9538 if (ctype
&& return_type
== return_conversion
)
9539 TYPE_HAS_CONVERSION (ctype
) = 1;
9540 if (ctype
&& constructor_name (ctype
) == dname
)
9542 /* We are within a class's scope. If our declarator name
9543 is the same as the class name, and we are defining
9544 a function, then it is a constructor/destructor, and
9545 therefore returns a void type. */
9547 if (flags
== DTOR_FLAG
)
9549 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9550 not be declared const or volatile. A destructor
9551 may not be static. */
9553 error ("destructor cannot be static member function");
9556 error ("destructors cannot be declared `const' or `volatile'");
9557 return void_type_node
;
9559 if (decl_context
== FIELD
)
9561 if (! member_function_or_else (ctype
, current_class_type
,
9562 "destructor for alien class `%s' cannot be a member"))
9563 return void_type_node
;
9566 else /* It's a constructor. */
9570 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9571 not be declared const or volatile. A constructor may
9572 not be virtual. A constructor may not be static. */
9574 error ("constructor cannot be static member function");
9577 pedwarn ("constructors cannot be declared virtual");
9582 error ("constructors cannot be declared `const' or `volatile'");
9583 return void_type_node
;
9586 RID_BIT_TYPE tmp_bits
;
9587 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9588 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9589 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9590 if (RIDBIT_ANY_SET (tmp_bits
))
9591 error ("return value type specifier for constructor ignored");
9593 type
= build_pointer_type (ctype
);
9594 if (decl_context
== FIELD
9595 && IS_SIGNATURE (current_class_type
))
9597 error ("constructor not allowed in signature");
9598 return void_type_node
;
9600 else if (decl_context
== FIELD
)
9602 if (! member_function_or_else (ctype
, current_class_type
,
9603 "constructor for alien class `%s' cannot be member"))
9604 return void_type_node
;
9605 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9606 if (return_type
!= return_ctor
)
9610 if (decl_context
== FIELD
)
9616 error ("can't initialize friend function `%s'", name
);
9619 /* Cannot be both friend and virtual. */
9620 error ("virtual functions cannot be friends");
9621 RIDBIT_RESET (RID_FRIEND
, specbits
);
9624 if (decl_context
== NORMAL
)
9625 error ("friend declaration not in class definition");
9626 if (current_function_decl
&& funcdef_flag
)
9627 cp_error ("can't define friend function `%s' in a local class definition",
9631 /* Construct the function type and go to the next
9632 inner layer of declarator. */
9634 declarator
= TREE_OPERAND (declarator
, 0);
9636 /* FIXME: This is where default args should be fully
9639 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9643 /* Get past destructors, etc.
9644 We know we have one because FLAGS will be non-zero.
9646 Complain about improper parameter lists here. */
9647 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9649 declarator
= TREE_OPERAND (declarator
, 0);
9651 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9652 arg_types
= void_list_node
;
9653 else if (arg_types
== NULL_TREE
9654 || arg_types
!= void_list_node
)
9656 error ("destructors cannot be specified with parameters");
9657 arg_types
= void_list_node
;
9662 /* ANSI says that `const int foo ();'
9663 does not make the function foo const. */
9664 type
= build_function_type (type
, arg_types
);
9668 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9669 if (TREE_PURPOSE (t
)
9670 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9672 add_defarg_fn (type
);
9681 /* Filter out pointers-to-references and references-to-references.
9682 We can get these if a TYPE_DECL is used. */
9684 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9686 error ("cannot declare %s to references",
9687 TREE_CODE (declarator
) == ADDR_EXPR
9688 ? "references" : "pointers");
9689 declarator
= TREE_OPERAND (declarator
, 0);
9693 if (TREE_CODE (type
) == OFFSET_TYPE
9694 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9695 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9697 cp_error ("cannot declare pointer to `%#T' member",
9699 type
= TREE_TYPE (type
);
9702 /* Merge any constancy or volatility into the target type
9705 if (constp
|| volatilep
)
9707 /* A const or volatile signature pointer/reference is
9708 pointing to a const or volatile object, i.e., the
9709 `optr' is const or volatile, respectively, not the
9710 signature pointer/reference itself. */
9711 if (! IS_SIGNATURE (type
))
9713 type
= cp_build_type_variant (type
, constp
, volatilep
);
9714 if (IS_AGGR_TYPE (type
))
9715 build_pointer_type (type
);
9721 if (IS_SIGNATURE (type
))
9723 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9725 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9726 && TYPE_SIZE (type
))
9727 cp_warning ("empty signature `%T' used in signature reference declaration",
9730 type
= build_signature_reference_type (type
,
9733 sorry ("signature reference");
9739 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9740 && TYPE_SIZE (type
))
9741 cp_warning ("empty signature `%T' used in signature pointer declaration",
9743 type
= build_signature_pointer_type (type
,
9749 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9751 if (TREE_CODE (type
) == VOID_TYPE
)
9752 error ("invalid type: `void &'");
9754 type
= build_reference_type (type
);
9756 else if (TREE_CODE (type
) == METHOD_TYPE
)
9758 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9761 type
= build_pointer_type (type
);
9763 /* Process a list of type modifier keywords (such as
9764 const or volatile) that were given inside the `*' or `&'. */
9766 if (TREE_TYPE (declarator
))
9768 register tree typemodlist
;
9770 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9771 typemodlist
= TREE_CHAIN (typemodlist
))
9773 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9775 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9780 error ("invalid type modifier within %s declarator",
9781 TREE_CODE (declarator
) == ADDR_EXPR
9782 ? "reference" : "pointer");
9786 pedwarn ("duplicate `const'");
9788 pedwarn ("duplicate `volatile'");
9789 if (TREE_CODE (declarator
) == ADDR_EXPR
9790 && (constp
|| volatilep
))
9793 pedwarn ("discarding `const' applied to a reference");
9795 pedwarn ("discarding `volatile' applied to a reference");
9796 constp
= volatilep
= 0;
9799 declarator
= TREE_OPERAND (declarator
, 0);
9805 /* We have converted type names to NULL_TREE if the
9806 name was bogus, or to a _TYPE node, if not.
9808 The variable CTYPE holds the type we will ultimately
9809 resolve to. The code here just needs to build
9810 up appropriate member types. */
9811 tree sname
= TREE_OPERAND (declarator
, 1);
9814 /* Destructors can have their visibilities changed as well. */
9815 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9816 sname
= TREE_OPERAND (sname
, 0);
9818 if (TREE_COMPLEXITY (declarator
) == 0)
9819 /* This needs to be here, in case we are called
9820 multiple times. */ ;
9821 else if (TREE_COMPLEXITY (declarator
) == -1)
9822 /* Namespace member. */
9823 pop_decl_namespace ();
9824 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9825 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9826 else if (! IS_AGGR_TYPE_CODE
9827 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9829 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9831 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9832 that refer to ctype. They couldn't be resolved earlier
9833 because we hadn't pushed into the class yet.
9834 Example: resolve 'B<T>::type' in
9835 'B<typename B<T>::type> B<T>::f () { }'. */
9836 if (current_template_parms
9837 && uses_template_parms (type
)
9838 && uses_template_parms (current_class_type
))
9840 tree args
= current_template_args ();
9841 type
= tsubst (type
, args
, NULL_TREE
);
9844 /* This pop_nested_class corresponds to the
9845 push_nested_class used to push into class scope for
9846 parsing the argument list of a function decl, in
9848 pop_nested_class (1);
9849 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9852 my_friendly_abort (16);
9854 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9856 /* We had a reference to a global decl, or
9857 perhaps we were given a non-aggregate typedef,
9858 in which case we cleared this out, and should just
9859 keep going as though it wasn't there. */
9863 ctype
= TREE_OPERAND (declarator
, 0);
9866 while (t
!= NULL_TREE
)
9868 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9869 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9870 template_count
+= 1;
9871 t
= TYPE_MAIN_DECL (t
);
9872 if (DECL_LANG_SPECIFIC (t
))
9873 t
= DECL_CLASS_CONTEXT (t
);
9878 if (sname
== NULL_TREE
)
9881 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9883 /* This is the `standard' use of the scoping operator:
9884 basetype :: member . */
9886 if (ctype
== current_class_type
)
9892 Is this ill-formed? */
9895 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9898 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9900 if (current_class_type
== NULL_TREE
9902 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9903 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9906 cp_error ("cannot declare member function `%T::%s' within `%T'",
9907 ctype
, name
, current_class_type
);
9908 return void_type_node
;
9911 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9912 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9914 /* Have to move this code elsewhere in this function.
9915 this code is used for i.e., typedef int A::M; M *pm;
9917 It is? How? jason 10/2/94 */
9919 if (current_class_type
)
9921 cp_error ("cannot declare member `%T::%s' within `%T'",
9922 ctype
, name
, current_class_type
);
9923 return void_type_node
;
9925 type
= build_offset_type (ctype
, type
);
9927 else if (uses_template_parms (ctype
))
9929 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9931 = build_cplus_method_type (build_type_variant (ctype
,
9935 TYPE_ARG_TYPES (type
));
9939 cp_error ("structure `%T' not yet defined", ctype
);
9940 return error_mark_node
;
9945 else if (TREE_CODE (sname
) == SCOPE_REF
)
9946 my_friendly_abort (17);
9950 declarator
= TREE_OPERAND (declarator
, 1);
9951 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9952 /* In this case, we will deal with it later. */
9956 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9957 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9959 type
= build_offset_type (ctype
, type
);
9966 declarator
= TREE_OPERAND (declarator
, 0);
9972 declarator
= NULL_TREE
;
9976 declarator
= NULL_TREE
;
9980 my_friendly_abort (158);
9986 error ("only constructors can be declared `explicit'");
9990 /* Now TYPE has the actual type. */
9992 /* If this is declaring a typedef name, return a TYPE_DECL. */
9994 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9998 error ("const `%s' cannot be declared `mutable'", name
);
9999 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10003 error ("static `%s' cannot be declared `mutable'", name
);
10004 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10008 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
10012 /* Note that the grammar rejects storage classes
10013 in typenames, fields or parameters. */
10014 if (constp
|| volatilep
)
10015 type
= cp_build_type_variant (type
, constp
, volatilep
);
10016 if (current_lang_name
== lang_name_java
)
10017 TYPE_FOR_JAVA (type
) = 1;
10019 if (decl_context
== FIELD
)
10021 if (declarator
== current_class_name
)
10022 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
10024 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
10025 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
10026 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
10030 /* Make sure this typedef lives as long as its type,
10031 since it might be used as a template parameter. */
10032 if (type
!= error_mark_node
)
10033 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10034 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10035 if (type
!= error_mark_node
)
10039 /* If the user declares "struct {...} foo" then `foo' will have
10040 an anonymous name. Fill that name in now. Nothing can
10041 refer to it, so nothing needs know about the name change.
10042 The TYPE_NAME field was filled in by build_struct_xref. */
10043 if (type
!= error_mark_node
10044 && TYPE_NAME (type
)
10045 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10046 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10048 /* For anonymous structs that are cv-qualified, need to use
10049 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10050 type not referenced after this block, don't bother
10051 resetting type to original type, ie. TREE_TYPE (decl). */
10052 type
= TYPE_MAIN_VARIANT (type
);
10054 /* Replace the anonymous name with the real name everywhere. */
10055 lookup_tag_reverse (type
, declarator
);
10056 TYPE_NAME (type
) = decl
;
10058 if (TYPE_LANG_SPECIFIC (type
))
10059 TYPE_WAS_ANONYMOUS (type
) = 1;
10061 /* XXX Temporarily set the scope.
10062 When returning, start_decl expects it as NULL_TREE,
10063 and will then then set it using pushdecl. */
10064 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10065 if (current_class_type
)
10066 DECL_CONTEXT (decl
) = current_class_type
;
10068 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10070 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10071 DECL_ASSEMBLER_NAME (decl
)
10072 = get_identifier (build_overload_name (type
, 1, 1));
10073 DECL_CONTEXT (decl
) = NULL_TREE
;
10075 /* FIXME remangle member functions; member functions of a
10076 type with external linkage have external linkage. */
10079 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10081 cp_error_at ("typedef name may not be class-qualified", decl
);
10086 if (ctype
== NULL_TREE
)
10088 if (TREE_CODE (type
) != METHOD_TYPE
)
10089 cp_error_at ("invalid type qualifier for non-method type", decl
);
10091 ctype
= TYPE_METHOD_BASETYPE (type
);
10093 if (ctype
!= NULL_TREE
)
10094 grok_method_quals (ctype
, decl
, quals
);
10097 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10098 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10099 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10101 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10103 error ("non-object member `%s' cannot be declared mutable", name
);
10106 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10107 inlinep
, friendp
, raises
!= NULL_TREE
);
10110 error ("typedef declaration includes an initializer");
10115 /* Detect the case of an array type of unspecified size
10116 which came, as such, direct from a typedef name.
10117 We must copy the type, so that each identifier gets
10118 a distinct type, so that each identifier's size can be
10119 controlled separately by its own initializer. */
10121 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10122 && TYPE_DOMAIN (type
) == NULL_TREE
)
10124 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10127 /* If this is a type name (such as, in a cast or sizeof),
10128 compute the type and return it now. */
10130 if (decl_context
== TYPENAME
)
10132 /* Note that the grammar rejects storage classes
10133 in typenames, fields or parameters. */
10134 if (constp
|| volatilep
)
10136 if (IS_SIGNATURE (type
))
10137 error ("`const' or `volatile' specified with signature type");
10139 type
= cp_build_type_variant (type
, constp
, volatilep
);
10142 /* Special case: "friend class foo" looks like a TYPENAME context. */
10147 cp_error ("`volatile' specified for friend class declaration");
10152 cp_error ("`inline' specified for friend class declaration");
10156 /* Only try to do this stuff if we didn't already give up. */
10157 if (type
!= integer_type_node
)
10159 /* A friendly class? */
10160 if (current_class_type
)
10161 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10163 error ("trying to make class `%s' a friend of global scope",
10164 TYPE_NAME_STRING (type
));
10165 type
= void_type_node
;
10170 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10171 if (ctype
== NULL_TREE
)
10173 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10174 ctype
= TYPE_METHOD_BASETYPE (type
);
10176 grok_method_quals (ctype
, dummy
, quals
);
10177 type
= TREE_TYPE (dummy
);
10182 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10183 && decl_context
!= CATCHPARM
10184 && TREE_CODE (type
) != UNION_TYPE
10187 cp_error ("abstract declarator `%T' used as declaration", type
);
10188 declarator
= make_anon_name ();
10191 /* `void' at top level (not within pointer)
10192 is allowed only in typedefs or type names.
10193 We don't complain about parms either, but that is because
10194 a better error message can be made later. */
10196 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10199 error ("unnamed variable or field declared void");
10200 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10202 if (IDENTIFIER_OPNAME_P (declarator
))
10203 my_friendly_abort (356);
10205 error ("variable or field `%s' declared void", name
);
10208 error ("variable or field declared void");
10209 type
= integer_type_node
;
10212 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10213 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10216 register tree decl
;
10218 if (decl_context
== PARM
)
10220 if (ctype
|| in_namespace
)
10221 error ("cannot use `::' in parameter declaration");
10223 /* A parameter declared as an array of T is really a pointer to T.
10224 One declared as a function is really a pointer to a function.
10225 One declared as a member is really a pointer to member. */
10227 if (TREE_CODE (type
) == ARRAY_TYPE
)
10229 /* Transfer const-ness of array into that of type pointed to. */
10230 type
= build_pointer_type
10231 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10232 volatilep
= constp
= 0;
10234 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10235 type
= build_pointer_type (type
);
10236 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10237 type
= build_pointer_type (type
);
10238 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10240 error ("declaration of `%s' as void", name
);
10244 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10246 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10247 inlinep
, friendp
, raises
!= NULL_TREE
);
10248 if (current_class_type
10249 && IS_SIGNATURE (current_class_type
))
10252 error ("parameter of signature member function declared `inline'");
10253 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10254 error ("parameter of signature member function declared `auto'");
10255 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10256 error ("parameter of signature member function declared `register'");
10259 /* Compute the type actually passed in the parmlist,
10260 for the case where there is no prototype.
10261 (For example, shorts and chars are passed as ints.)
10262 When there is a prototype, this is overridden later. */
10264 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10266 else if (decl_context
== FIELD
)
10268 if (type
== error_mark_node
)
10270 /* Happens when declaring arrays of sizes which
10271 are error_mark_node, for example. */
10274 else if (in_namespace
)
10276 /* Something like struct S { int N::j; }; */
10277 cp_error ("invalid use of `::'");
10280 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10283 tree function_context
;
10285 /* We catch the others as conflicts with the builtin
10287 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10289 cp_error ("function `%D' cannot be declared friend",
10296 if (ctype
== NULL_TREE
)
10297 ctype
= current_class_type
;
10299 if (ctype
== NULL_TREE
)
10301 cp_error ("can't make `%D' into a method -- not in a class",
10303 return void_type_node
;
10306 /* ``A union may [ ... ] not [ have ] virtual functions.''
10308 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10310 cp_error ("function `%D' declared virtual inside a union",
10312 return void_type_node
;
10315 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10316 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10317 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10318 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10322 cp_error ("`%D' cannot be declared virtual, since it is always static",
10327 else if (staticp
< 2)
10328 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10329 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10332 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10333 function_context
= (ctype
!= NULL_TREE
) ?
10334 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10335 publicp
= (! friendp
|| ! staticp
)
10336 && function_context
== NULL_TREE
;
10337 decl
= grokfndecl (ctype
, type
,
10338 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10339 ? declarator
: dname
,
10341 virtualp
, flags
, quals
, raises
, attrlist
,
10342 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10343 funcdef_flag
, template_count
, in_namespace
);
10344 if (decl
== NULL_TREE
|| decl
== error_mark_node
)
10347 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10348 /* The decl and setting of decl_machine_attr is also turned off. */
10349 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10352 if (explicitp
== 2)
10353 DECL_NONCONVERTING_P (decl
) = 1;
10355 else if (TREE_CODE (type
) == METHOD_TYPE
)
10357 /* We only get here for friend declarations of
10358 members of other classes. */
10359 /* All method decls are public, so tell grokfndecl to set
10360 TREE_PUBLIC, also. */
10361 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10362 virtualp
, flags
, quals
, raises
, attrlist
,
10363 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10364 template_count
, in_namespace
);
10365 if (decl
== NULL_TREE
)
10368 else if (!staticp
&& ! processing_template_decl
10369 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10370 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10373 cp_error ("field `%D' has incomplete type", declarator
);
10375 cp_error ("name `%T' has incomplete type", type
);
10377 /* If we're instantiating a template, tell them which
10378 instantiation made the field's type be incomplete. */
10379 if (current_class_type
10380 && TYPE_NAME (current_class_type
)
10381 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10382 && declspecs
&& TREE_VALUE (declspecs
)
10383 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10384 cp_error (" in instantiation of template `%T'",
10385 current_class_type
);
10387 type
= error_mark_node
;
10394 error ("`%s' is neither function nor method; cannot be declared friend",
10395 IDENTIFIER_POINTER (declarator
));
10403 /* Friends are treated specially. */
10404 if (ctype
== current_class_type
)
10405 warning ("member functions are implicitly friends of their class");
10408 tree t
= NULL_TREE
;
10409 if (decl
&& DECL_NAME (decl
))
10411 if (template_class_depth (current_class_type
) == 0)
10414 = check_explicit_specialization
10416 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10417 if (decl
== error_mark_node
)
10418 return error_mark_node
;
10421 t
= do_friend (ctype
, declarator
, decl
,
10422 last_function_parms
, flags
, quals
,
10425 if (t
&& funcdef_flag
)
10428 return void_type_node
;
10432 /* Structure field. It may not be a function, except for C++ */
10434 if (decl
== NULL_TREE
)
10440 /* An attempt is being made to initialize a non-static
10441 member. But, from [class.mem]:
10443 4 A member-declarator can contain a
10444 constant-initializer only if it declares a static
10445 member (_class.static_) of integral or enumeration
10446 type, see _class.static.data_.
10448 This used to be relatively common practice, but
10449 the rest of the compiler does not correctly
10450 handle the initialization unless the member is
10451 static so we make it static below. */
10452 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10453 constp
? "const member" : "member",
10455 cp_pedwarn ("making `%D' static", declarator
);
10459 /* Motion 10 at San Diego: If a static const integral data
10460 member is initialized with an integral constant
10461 expression, the initializer may appear either in the
10462 declaration (within the class), or in the definition,
10463 but not both. If it appears in the class, the member is
10464 a member constant. The file-scope definition is always
10466 if (CLASS_TYPE_P (type
)
10467 || TREE_CODE (type
) == REFERENCE_TYPE
)
10469 cp_error ("in-class initialization of static data member of non-integral type `%T'",
10471 /* If we just return the declaration, crashes will
10472 sometimes occur. We therefore return
10473 void_type_node, as if this was a friend
10474 declaration, to cause callers to completely
10475 ignore this declaration. */
10476 return void_type_node
;
10479 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10481 else if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10482 && !uses_template_parms (type
))
10483 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10488 /* ANSI C++ Apr '95 wp 9.2 */
10489 if (declarator
== current_class_name
)
10490 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10493 /* C++ allows static class members.
10494 All other work for this is done by grokfield.
10495 This VAR_DCL is built by build_lang_field_decl.
10496 All other VAR_DECLs are built by build_decl. */
10497 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10498 TREE_STATIC (decl
) = 1;
10499 /* In class context, 'static' means public access. */
10500 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10504 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10505 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10507 DECL_MUTABLE_P (decl
) = 1;
10508 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10512 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10513 inlinep
, friendp
, raises
!= NULL_TREE
);
10516 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10518 tree original_name
;
10524 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10525 original_name
= dname
;
10527 original_name
= declarator
;
10529 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10530 error ("storage class `auto' invalid for function `%s'", name
);
10531 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10532 error ("storage class `register' invalid for function `%s'", name
);
10534 /* Function declaration not at top level.
10535 Storage classes other than `extern' are not allowed
10536 and `extern' makes no difference. */
10537 if (! toplevel_bindings_p ()
10538 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10539 || RIDBIT_SETP (RID_INLINE
, specbits
))
10542 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10543 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10545 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10548 if (ctype
== NULL_TREE
)
10552 error ("virtual non-class function `%s'", name
);
10556 if (current_lang_name
== lang_name_cplusplus
10557 && ! processing_template_decl
10558 && ! MAIN_NAME_P (original_name
)
10559 && ! (IDENTIFIER_LENGTH (original_name
) > 10
10560 && IDENTIFIER_POINTER (original_name
)[0] == '_'
10561 && IDENTIFIER_POINTER (original_name
)[1] == '_'
10562 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
10563 /* Plain overloading: will not be grok'd by grokclassfn. */
10564 if (name_mangling_version
< 1
10565 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10566 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
10568 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10569 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10570 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10572 /* Record presence of `static'. */
10573 publicp
= (ctype
!= NULL_TREE
10574 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10575 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10577 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10578 virtualp
, flags
, quals
, raises
, attrlist
,
10580 publicp
, inlinep
, funcdef_flag
,
10581 template_count
, in_namespace
);
10582 if (decl
== NULL_TREE
)
10585 /* Among other times, could occur from check_explicit_specialization
10586 returning an error_mark_node. */
10587 if (decl
== error_mark_node
)
10588 return error_mark_node
;
10590 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
10591 && (! DECL_USE_TEMPLATE (decl
) ||
10592 name_mangling_version
< 1))
10593 DECL_ASSEMBLER_NAME (decl
) = declarator
;
10597 int illegal_static
= 0;
10599 /* Don't allow a static member function in a class, and forbid
10600 declaring main to be static. */
10601 if (TREE_CODE (type
) == METHOD_TYPE
)
10603 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10604 illegal_static
= 1;
10606 else if (current_function_decl
)
10608 /* FIXME need arm citation */
10609 error ("cannot declare static function inside another function");
10610 illegal_static
= 1;
10613 if (illegal_static
)
10616 RIDBIT_RESET (RID_STATIC
, specbits
);
10622 /* It's a variable. */
10624 if (decl_context
== CATCHPARM
)
10629 error ("cannot use `::' in parameter declaration");
10632 /* A parameter declared as an array of T is really a pointer to T.
10633 One declared as a function is really a pointer to a function.
10634 One declared as a member is really a pointer to member. */
10636 if (TREE_CODE (type
) == ARRAY_TYPE
)
10638 /* Transfer const-ness of array into that of type
10640 type
= build_pointer_type
10641 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10642 volatilep
= constp
= 0;
10644 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10645 type
= build_pointer_type (type
);
10646 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10647 type
= build_pointer_type (type
);
10650 /* An uninitialized decl with `extern' is a reference. */
10651 decl
= grokvardecl (type
, declarator
, &specbits
,
10652 initialized
, constp
, in_namespace
);
10653 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10654 inlinep
, friendp
, raises
!= NULL_TREE
);
10658 DECL_CONTEXT (decl
) = ctype
;
10661 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10663 RIDBIT_RESET (RID_STATIC
, specbits
);
10665 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10667 cp_error ("static member `%D' declared `register'", decl
);
10668 RIDBIT_RESET (RID_REGISTER
, specbits
);
10670 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10672 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10674 RIDBIT_RESET (RID_EXTERN
, specbits
);
10679 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10681 error ("`%s' cannot be declared mutable", name
);
10684 /* Record `register' declaration for warnings on &
10685 and in case doing stupid register allocation. */
10687 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10688 DECL_REGISTER (decl
) = 1;
10690 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10691 DECL_THIS_EXTERN (decl
) = 1;
10693 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10694 DECL_THIS_STATIC (decl
) = 1;
10696 /* Record constancy and volatility. */
10699 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10702 TREE_SIDE_EFFECTS (decl
) = 1;
10703 TREE_THIS_VOLATILE (decl
) = 1;
10710 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10711 An empty exprlist is a parmlist. An exprlist which
10712 contains only identifiers at the global level
10713 is a parmlist. Otherwise, it is an exprlist. */
10716 parmlist_is_exprlist (exprs
)
10719 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10722 if (toplevel_bindings_p ())
10724 /* At the global level, if these are all identifiers,
10725 then it is a parmlist. */
10728 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10730 exprs
= TREE_CHAIN (exprs
);
10737 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10740 C++: also subroutine of `start_function'. */
10743 require_complete_types_for_parms (parms
)
10746 if (processing_template_decl
)
10751 tree type
= TREE_TYPE (parms
);
10752 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10754 if (DECL_NAME (parms
))
10755 error ("parameter `%s' has incomplete type",
10756 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10758 error ("parameter has incomplete type");
10759 TREE_TYPE (parms
) = error_mark_node
;
10762 /* If the arg types are incomplete in a declaration,
10763 they must include undefined tags.
10764 These tags can never be defined in the scope of the declaration,
10765 so the types can never be completed,
10766 and no call can be compiled successfully. */
10767 /* This is not the right behavior for C++, but not having
10768 it is also probably wrong. */
10771 /* Now warn if is a pointer to an incomplete type. */
10772 while (TREE_CODE (type
) == POINTER_TYPE
10773 || TREE_CODE (type
) == REFERENCE_TYPE
)
10774 type
= TREE_TYPE (type
);
10775 type
= TYPE_MAIN_VARIANT (type
);
10776 if (TYPE_SIZE (type
) == NULL_TREE
)
10778 if (DECL_NAME (parm
) != NULL_TREE
)
10779 warning ("parameter `%s' points to incomplete type",
10780 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10782 warning ("parameter points to incomplete type");
10786 parms
= TREE_CHAIN (parms
);
10790 /* Decode the list of parameter types for a function type.
10791 Given the list of things declared inside the parens,
10792 return a list of types.
10794 The list we receive can have three kinds of elements:
10795 an IDENTIFIER_NODE for names given without types,
10796 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10797 or void_type_node, to mark the end of an argument list
10798 when additional arguments are not permitted (... was not used).
10800 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10801 a mere declaration. A nonempty identifier-list gets an error message
10802 when FUNCDEF_FLAG is zero.
10803 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10804 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10806 If all elements of the input list contain types,
10807 we return a list of the types.
10808 If all elements contain no type (except perhaps a void_type_node
10809 at the end), we return a null list.
10810 If some have types and some do not, it is an error, and we
10811 return a null list.
10813 Also set last_function_parms to either
10814 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10815 A list of names is converted to a chain of PARM_DECLs
10816 by store_parm_decls so that ultimately it is always a chain of decls.
10818 Note that in C++, parameters can take default values. These default
10819 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10820 an error to specify default values which are followed by parameters
10821 that have no default values, or an ELLIPSES. For simplicities sake,
10822 only parameters which are specified with their types can take on
10826 grokparms (first_parm
, funcdef_flag
)
10830 tree result
= NULL_TREE
;
10831 tree decls
= NULL_TREE
;
10833 if (first_parm
!= NULL_TREE
10834 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10836 if (! funcdef_flag
)
10837 pedwarn ("parameter names (without types) in function declaration");
10838 last_function_parms
= first_parm
;
10841 else if (first_parm
!= NULL_TREE
10842 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10843 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10844 my_friendly_abort (145);
10847 /* Types were specified. This is a list of declarators
10848 each represented as a TREE_LIST node. */
10849 register tree parm
, chain
;
10850 int any_init
= 0, any_error
= 0;
10852 if (first_parm
!= NULL_TREE
)
10854 tree last_result
= NULL_TREE
;
10855 tree last_decl
= NULL_TREE
;
10857 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10859 tree type
= NULL_TREE
, list_node
= parm
;
10860 register tree decl
= TREE_VALUE (parm
);
10861 tree init
= TREE_PURPOSE (parm
);
10863 chain
= TREE_CHAIN (parm
);
10864 /* @@ weak defense against parse errors. */
10865 if (TREE_CODE (decl
) != VOID_TYPE
10866 && TREE_CODE (decl
) != TREE_LIST
)
10868 /* Give various messages as the need arises. */
10869 if (TREE_CODE (decl
) == STRING_CST
)
10870 cp_error ("invalid string constant `%E'", decl
);
10871 else if (TREE_CODE (decl
) == INTEGER_CST
)
10872 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10876 if (TREE_CODE (decl
) != VOID_TYPE
)
10878 decl
= grokdeclarator (TREE_VALUE (decl
),
10879 TREE_PURPOSE (decl
),
10880 PARM
, init
!= NULL_TREE
,
10884 type
= TREE_TYPE (decl
);
10885 if (TREE_CODE (type
) == VOID_TYPE
)
10886 decl
= void_type_node
;
10887 else if (TREE_CODE (type
) == METHOD_TYPE
)
10889 if (DECL_NAME (decl
))
10890 /* Cannot use the decl here because
10891 we don't have DECL_CONTEXT set up yet. */
10892 cp_error ("parameter `%D' invalidly declared method type",
10895 error ("parameter invalidly declared method type");
10896 type
= build_pointer_type (type
);
10897 TREE_TYPE (decl
) = type
;
10899 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10901 if (DECL_NAME (decl
))
10902 cp_error ("parameter `%D' invalidly declared offset type",
10905 error ("parameter invalidly declared offset type");
10906 type
= build_pointer_type (type
);
10907 TREE_TYPE (decl
) = type
;
10909 else if (TREE_CODE (type
) == RECORD_TYPE
10910 && TYPE_LANG_SPECIFIC (type
)
10911 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10913 abstract_virtuals_error (decl
, type
);
10914 any_error
= 1; /* Seems like a good idea. */
10916 else if (TREE_CODE (type
) == RECORD_TYPE
10917 && TYPE_LANG_SPECIFIC (type
)
10918 && IS_SIGNATURE (type
))
10920 signature_error (decl
, type
);
10921 any_error
= 1; /* Seems like a good idea. */
10923 else if (POINTER_TYPE_P (type
))
10926 while (POINTER_TYPE_P (t
)
10927 || (TREE_CODE (t
) == ARRAY_TYPE
10928 && TYPE_DOMAIN (t
) != NULL_TREE
))
10930 if (TREE_CODE (t
) == ARRAY_TYPE
)
10931 cp_error ("parameter type `%T' includes %s to array of unknown bound",
10933 TYPE_PTR_P (type
) ? "pointer" : "reference");
10937 if (TREE_CODE (decl
) == VOID_TYPE
)
10939 if (result
== NULL_TREE
)
10941 result
= void_list_node
;
10942 last_result
= result
;
10946 TREE_CHAIN (last_result
) = void_list_node
;
10947 last_result
= void_list_node
;
10950 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10951 error ("`void' in parameter list must be entire list");
10955 /* Since there is a prototype, args are passed in their own types. */
10956 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10957 #ifdef PROMOTE_PROTOTYPES
10958 if ((TREE_CODE (type
) == INTEGER_TYPE
10959 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10960 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10961 DECL_ARG_TYPE (decl
) = integer_type_node
;
10968 if (TREE_CODE (init
) == SAVE_EXPR
)
10969 PARM_DECL_EXPR (init
) = 1;
10970 else if (processing_template_decl
)
10972 /* Unparsed default arg from in-class decl. */
10973 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10975 else if (TREE_CODE (init
) == VAR_DECL
10976 || TREE_CODE (init
) == PARM_DECL
)
10978 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10980 /* ``Local variables may not be used in default
10981 argument expressions.'' dpANSI C++ 8.2.6 */
10982 /* If extern int i; within a function is not
10983 considered a local variable, then this code is
10985 cp_error ("local variable `%D' may not be used as a default argument", init
);
10988 else if (TREE_READONLY_DECL_P (init
))
10989 init
= decl_constant_value (init
);
10992 init
= require_instantiated_type (type
, init
, integer_zero_node
);
10993 if (! processing_template_decl
10994 && init
!= error_mark_node
10995 && TREE_CODE (init
) != DEFAULT_ARG
10996 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
10997 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10998 TREE_TYPE (init
), decl
);
11004 if (decls
== NULL_TREE
)
11011 TREE_CHAIN (last_decl
) = decl
;
11014 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
11016 TREE_PURPOSE (list_node
) = init
;
11017 TREE_VALUE (list_node
) = type
;
11018 TREE_CHAIN (list_node
) = NULL_TREE
;
11021 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
11022 if (result
== NULL_TREE
)
11024 result
= list_node
;
11025 last_result
= result
;
11029 TREE_CHAIN (last_result
) = list_node
;
11030 last_result
= list_node
;
11034 TREE_CHAIN (last_result
) = NULL_TREE
;
11035 /* If there are no parameters, and the function does not end
11036 with `...', then last_decl will be NULL_TREE. */
11037 if (last_decl
!= NULL_TREE
)
11038 TREE_CHAIN (last_decl
) = NULL_TREE
;
11042 last_function_parms
= decls
;
11044 /* In a fcn definition, arg types must be complete. */
11045 if (funcdef_flag
> 0)
11046 require_complete_types_for_parms (last_function_parms
);
11051 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11052 FUNCTION_TYPE with the newly parsed version of its default argument, which
11053 was previously digested as text. See snarf_defarg et al in lex.c. */
11056 replace_defarg (arg
, init
)
11059 if (! processing_template_decl
11060 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11061 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11062 TREE_TYPE (init
), TREE_VALUE (arg
));
11063 TREE_PURPOSE (arg
) = init
;
11070 tree t
= FUNCTION_ARG_CHAIN (d
);
11071 if (DECL_CONSTRUCTOR_P (d
)
11072 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11073 t
= TREE_CHAIN (t
);
11074 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11075 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11076 == DECL_CLASS_CONTEXT (d
))
11077 && (TREE_CHAIN (t
) == NULL_TREE
11078 || TREE_CHAIN (t
) == void_list_node
11079 || TREE_PURPOSE (TREE_CHAIN (t
))))
11084 /* These memoizing functions keep track of special properties which
11085 a class may have. `grok_ctor_properties' notices whether a class
11086 has a constructor of the form X(X&), and also complains
11087 if the class has a constructor of the form X(X).
11088 `grok_op_properties' takes notice of the various forms of
11089 operator= which are defined, as well as what sorts of type conversion
11090 may apply. Both functions take a FUNCTION_DECL as an argument. */
11093 grok_ctor_properties (ctype
, decl
)
11096 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11097 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11099 /* When a type has virtual baseclasses, a magical first int argument is
11100 added to any ctor so we can tell if the class has been initialized
11101 yet. This could screw things up in this function, so we deliberately
11102 ignore the leading int if we're in that situation. */
11103 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11105 my_friendly_assert (parmtypes
11106 && TREE_VALUE (parmtypes
) == integer_type_node
,
11108 parmtypes
= TREE_CHAIN (parmtypes
);
11109 parmtype
= TREE_VALUE (parmtypes
);
11112 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11113 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11114 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11115 || TREE_CHAIN (parmtypes
) == void_list_node
11116 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11118 TYPE_HAS_INIT_REF (ctype
) = 1;
11119 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11120 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11122 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11123 && TREE_CHAIN (parmtypes
) != NULL_TREE
11124 && TREE_CHAIN (parmtypes
) == void_list_node
)
11126 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11128 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11131 else if (TREE_CODE (parmtype
) == VOID_TYPE
11132 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11133 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11138 /* An operator with this name can be either unary or binary. */
11144 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11145 || name
== ansi_opname
[(int) ADDR_EXPR
]
11146 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11147 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11148 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11149 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11152 /* An operator with this name can only be unary. */
11158 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11159 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11160 || name
== ansi_opname
[(int) COMPONENT_REF
]
11161 || OPERATOR_TYPENAME_P (name
));
11164 /* Do a little sanity-checking on how they declared their operator. */
11167 grok_op_properties (decl
, virtualp
, friendp
)
11169 int virtualp
, friendp
;
11171 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11172 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11173 tree name
= DECL_NAME (decl
);
11175 if (current_class_type
== NULL_TREE
)
11180 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11181 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11182 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11183 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11184 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11185 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11186 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11187 || name
== ansi_opname
[(int) MEMBER_REF
])
11188 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11189 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11190 TYPE_GETS_NEW (current_class_type
) |= 1;
11191 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11192 TYPE_GETS_DELETE (current_class_type
) |= 1;
11193 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11194 TYPE_GETS_NEW (current_class_type
) |= 2;
11195 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11196 TYPE_GETS_DELETE (current_class_type
) |= 2;
11199 if (name
== ansi_opname
[(int) NEW_EXPR
]
11200 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11202 /* When the compiler encounters the definition of A::operator new, it
11203 doesn't look at the class declaration to find out if it's static. */
11205 revert_static_member_fn (&decl
, NULL
, NULL
);
11207 /* Take care of function decl if we had syntax errors. */
11208 if (argtypes
== NULL_TREE
)
11210 = build_function_type (ptr_type_node
,
11211 hash_tree_chain (integer_type_node
,
11214 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11216 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11217 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11220 revert_static_member_fn (&decl
, NULL
, NULL
);
11222 if (argtypes
== NULL_TREE
)
11224 = build_function_type (void_type_node
,
11225 hash_tree_chain (ptr_type_node
,
11229 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11231 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11232 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11233 != void_list_node
))
11234 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11239 /* An operator function must either be a non-static member function
11240 or have at least one parameter of a class, a reference to a class,
11241 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11242 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11244 if (OPERATOR_TYPENAME_P (name
)
11245 || name
== ansi_opname
[(int) CALL_EXPR
]
11246 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11247 || name
== ansi_opname
[(int) COMPONENT_REF
]
11248 || name
== ansi_opname
[(int) ARRAY_REF
])
11249 cp_error ("`%D' must be a nonstatic member function", decl
);
11254 if (DECL_STATIC_FUNCTION_P (decl
))
11255 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11258 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11260 tree arg
= TREE_VALUE (p
);
11261 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11262 arg
= TREE_TYPE (arg
);
11264 /* This lets bad template code slip through. */
11265 if (IS_AGGR_TYPE (arg
)
11266 || TREE_CODE (arg
) == ENUMERAL_TYPE
11267 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11268 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11272 ("`%D' must have an argument of class or enumerated type",
11279 if (name
== ansi_opname
[(int) CALL_EXPR
])
11280 return; /* No restrictions on args. */
11282 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11284 tree t
= TREE_TYPE (name
);
11285 if (TREE_CODE (t
) == VOID_TYPE
)
11286 pedwarn ("void is not a valid type conversion operator");
11287 else if (! friendp
)
11289 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11292 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11294 if (t
== current_class_type
)
11295 what
= "the same type";
11296 /* Don't force t to be complete here. */
11297 else if (IS_AGGR_TYPE (t
)
11299 && DERIVED_FROM_P (t
, current_class_type
))
11300 what
= "a base class";
11303 warning ("conversion to %s%s will never use a type conversion operator",
11304 ref
? "a reference to " : "", what
);
11308 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11312 if (list_length (argtypes
) != 3 && methodp
)
11314 cp_error ("`%D' must take exactly one argument", decl
);
11317 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11319 if (copy_assignment_arg_p (parmtype
, virtualp
)
11322 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11323 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11324 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11325 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11328 else if (name
== ansi_opname
[(int) COND_EXPR
])
11331 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11332 if (list_length (argtypes
) != 4)
11333 cp_error ("`%D' must take exactly three arguments", decl
);
11335 else if (ambi_op_p (name
))
11337 if (list_length (argtypes
) == 2)
11339 else if (list_length (argtypes
) == 3)
11341 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11342 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11343 && ! processing_template_decl
11344 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11347 cp_error ("postfix `%D' must take `int' as its argument",
11351 ("postfix `%D' must take `int' as its second argument",
11358 cp_error ("`%D' must take either zero or one argument", decl
);
11360 cp_error ("`%D' must take either one or two arguments", decl
);
11363 /* More Effective C++ rule 6. */
11365 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11366 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11368 tree arg
= TREE_VALUE (argtypes
);
11369 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11370 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11371 arg
= TREE_TYPE (arg
);
11372 arg
= TYPE_MAIN_VARIANT (arg
);
11373 if (list_length (argtypes
) == 2)
11375 if (TREE_CODE (ret
) != REFERENCE_TYPE
11376 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11378 cp_warning ("prefix `%D' should return `%T'", decl
,
11379 build_reference_type (arg
));
11383 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11384 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11388 else if (unary_op_p (name
))
11390 if (list_length (argtypes
) != 2)
11393 cp_error ("`%D' must take `void'", decl
);
11395 cp_error ("`%D' must take exactly one argument", decl
);
11398 else /* if (binary_op_p (name)) */
11400 if (list_length (argtypes
) != 3)
11403 cp_error ("`%D' must take exactly one argument", decl
);
11405 cp_error ("`%D' must take exactly two arguments", decl
);
11408 /* More Effective C++ rule 7. */
11410 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11411 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11412 || name
== ansi_opname
[COMPOUND_EXPR
]))
11413 cp_warning ("user-defined `%D' always evaluates both arguments",
11417 /* Effective C++ rule 23. */
11419 && list_length (argtypes
) == 3
11420 && (name
== ansi_opname
[PLUS_EXPR
]
11421 || name
== ansi_opname
[MINUS_EXPR
]
11422 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11423 || name
== ansi_opname
[MULT_EXPR
])
11424 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11425 cp_warning ("`%D' should return by value", decl
);
11429 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11430 if (TREE_PURPOSE (argtypes
))
11432 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11433 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11434 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11437 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11440 cp_error ("`%D' cannot have default arguments", decl
);
11445 /* Get the struct, enum or union (CODE says which) with tag NAME.
11446 Define the tag as a forward-reference if it is not defined.
11448 C++: If a class derivation is given, process it here, and report
11449 an error if multiple derivation declarations are not identical.
11451 If this is a definition, come in through xref_tag and only look in
11452 the current frame for the name (since C++ allows new names in any
11456 xref_tag (code_type_node
, name
, globalize
)
11457 tree code_type_node
;
11461 enum tag_types tag_code
;
11462 enum tree_code code
;
11464 register tree ref
, t
;
11465 struct binding_level
*b
= inner_binding_level
;
11467 tree attributes
= NULL_TREE
;
11469 /* If we are called from the parser, code_type_node will sometimes be a
11470 TREE_LIST. This indicates that the user wrote
11471 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11473 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11475 attributes
= TREE_PURPOSE (code_type_node
);
11476 code_type_node
= TREE_VALUE (code_type_node
);
11479 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11484 case signature_type
:
11485 code
= RECORD_TYPE
;
11491 code
= ENUMERAL_TYPE
;
11494 my_friendly_abort (18);
11497 /* If a cross reference is requested, look up the type
11498 already defined for this tag and return it. */
11499 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11502 name
= TYPE_IDENTIFIER (t
);
11506 t
= IDENTIFIER_TYPE_VALUE (name
);
11507 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11508 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11513 if (t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11514 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11516 cp_error ("redeclaration of template type-parameter `%T'", name
);
11517 cp_error_at (" previously declared here `%#D'",
11518 TEMPLATE_TYPE_DECL (t
));
11520 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11523 /* If we know we are defining this tag, only look it up in
11524 this scope and don't try to find it as a type. */
11525 ref
= lookup_tag (code
, name
, b
, 1);
11529 if (current_class_type
11530 && template_class_depth (current_class_type
)
11531 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11532 /* Since GLOBALIZE is non-zero, we are not looking at a
11533 definition of this tag. Since, in addition, we are currently
11534 processing a (member) template declaration of a template
11535 class, we don't want to do any lookup at all; consider:
11542 { template <class V>
11543 friend struct S1; };
11545 Here, the S2::S1 declaration should not be confused with the
11546 outer declaration. In particular, the inner version should
11547 have a template parameter of level 2, not level 1. This
11548 would be particularly important if the member declaration
11551 template <class V = U> friend struct S1;
11553 say, when we should tsubst into `U' when instantiating S2. */
11560 ref
= lookup_tag (code
, name
, b
, 0);
11564 /* Try finding it as a type declaration. If that wins,
11566 ref
= lookup_name (name
, 1);
11568 if (ref
!= NULL_TREE
11569 && processing_template_decl
11570 && DECL_CLASS_TEMPLATE_P (ref
)
11571 && template_class_depth (current_class_type
) == 0)
11572 /* Since GLOBALIZE is true, we're declaring a global
11573 template, so we want this type. */
11574 ref
= DECL_RESULT (ref
);
11576 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11577 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11578 ref
= TREE_TYPE (ref
);
11585 push_obstacks_nochange ();
11589 /* If no such tag is yet defined, create a forward-reference node
11590 and record it as the "definition".
11591 When a real declaration of this type is found,
11592 the forward-reference will be altered into a real type. */
11594 /* In C++, since these migrate into the global scope, we must
11595 build them on the permanent obstack. */
11597 temp
= allocation_temporary_p ();
11599 end_temporary_allocation ();
11601 if (code
== ENUMERAL_TYPE
)
11603 cp_error ("use of enum `%#D' without previous declaration", name
);
11605 ref
= make_node (ENUMERAL_TYPE
);
11607 /* Give the type a default layout like unsigned int
11608 to avoid crashing if it does not get defined. */
11609 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11610 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11611 TREE_UNSIGNED (ref
) = 1;
11612 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11613 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11614 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11616 /* Enable us to recognize when a type is created in class context.
11617 To do nested classes correctly, this should probably be cleared
11618 out when we leave this classes scope. Currently this in only
11619 done in `start_enum'. */
11621 pushtag (name
, ref
, globalize
);
11625 struct binding_level
*old_b
= class_binding_level
;
11627 ref
= make_lang_type (code
);
11629 if (tag_code
== signature_type
)
11631 SET_SIGNATURE (ref
);
11632 /* Since a signature type will be turned into the type
11633 of signature tables, it's not only an interface. */
11634 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11635 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11636 /* A signature doesn't have a vtable. */
11637 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11640 #ifdef NONNESTED_CLASSES
11641 /* Class types don't nest the way enums do. */
11642 class_binding_level
= (struct binding_level
*)0;
11644 pushtag (name
, ref
, globalize
);
11645 class_binding_level
= old_b
;
11650 /* If it no longer looks like a nested type, make sure it's
11652 If it is not an IDENTIFIER, this is not a declaration */
11653 if (b
->namespace_p
&& !class_binding_level
11654 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11656 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11657 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11660 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11661 redeclare_class_template (ref
, current_template_parms
);
11664 /* Until the type is defined, tentatively accept whatever
11665 structure tag the user hands us. */
11666 if (TYPE_SIZE (ref
) == NULL_TREE
11667 && ref
!= current_class_type
11668 /* Have to check this, in case we have contradictory tag info. */
11669 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11671 if (tag_code
== class_type
)
11672 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11673 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11674 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11679 TREE_TYPE (ref
) = attributes
;
11685 xref_tag_from_type (old
, id
, globalize
)
11689 tree code_type_node
;
11691 if (TREE_CODE (old
) == RECORD_TYPE
)
11692 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11693 ? class_type_node
: record_type_node
);
11695 code_type_node
= union_type_node
;
11697 if (id
== NULL_TREE
)
11698 id
= TYPE_IDENTIFIER (old
);
11700 return xref_tag (code_type_node
, id
, globalize
);
11704 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11705 tree code_type_node
;
11709 /* In the declaration `A : X, Y, ... Z' we mark all the types
11710 (A, X, Y, ..., Z) so we can check for duplicates. */
11713 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11715 if (tag_code
== union_type
)
11717 cp_error ("derived union `%T' invalid", ref
);
11721 len
= list_length (binfo
);
11722 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11724 SET_CLASSTYPE_MARKED (ref
);
11725 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11727 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11729 /* The base of a derived struct is public by default. */
11731 = (TREE_PURPOSE (binfo
) == access_public_node
11732 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11733 || (tag_code
!= class_type
11734 && (TREE_PURPOSE (binfo
) == access_default_node
11735 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11737 = (TREE_PURPOSE (binfo
) == access_protected_node
11738 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11740 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11741 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11742 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11743 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11744 tree basetype
= TREE_VALUE (binfo
);
11747 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11748 basetype
= TREE_TYPE (basetype
);
11750 || (TREE_CODE (basetype
) != RECORD_TYPE
11751 && TREE_CODE (basetype
) != TYPENAME_TYPE
11752 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11753 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11755 cp_error ("base type `%T' fails to be a struct or class type",
11756 TREE_VALUE (binfo
));
11760 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11763 /* This code replaces similar code in layout_basetypes.
11764 We put the complete_type first for implicit `typename'. */
11765 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11766 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11768 cp_error ("base class `%T' has incomplete type", basetype
);
11774 if (CLASSTYPE_MARKED (basetype
))
11776 if (basetype
== ref
)
11777 cp_error ("recursive type `%T' undefined", basetype
);
11779 cp_error ("duplicate base type `%T' invalid", basetype
);
11783 if (TYPE_FOR_JAVA (basetype
)
11784 && current_lang_stack
== current_lang_base
)
11785 TYPE_FOR_JAVA (ref
) = 1;
11787 /* Note that the BINFO records which describe individual
11788 inheritances are *not* shared in the lattice! They
11789 cannot be shared because a given baseclass may be
11790 inherited with different `accessibility' by different
11791 derived classes. (Each BINFO record describing an
11792 individual inheritance contains flags which say what
11793 the `accessibility' of that particular inheritance is.) */
11795 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11796 TYPE_BINFO_VTABLE (basetype
),
11797 TYPE_BINFO_VIRTUALS (basetype
));
11799 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11800 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11801 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11802 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11803 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11805 /* We need to unshare the binfos now so that lookups during class
11806 definition work. */
11807 unshare_base_binfos (base_binfo
);
11809 SET_CLASSTYPE_MARKED (basetype
);
11811 /* We are free to modify these bits because they are meaningless
11812 at top level, and BASETYPE is a top-level type. */
11813 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11815 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11816 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11819 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11820 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11821 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
11826 TREE_VEC_LENGTH (binfos
) = i
;
11828 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11831 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11833 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11834 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11835 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11836 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11838 /* Unmark all the types. */
11840 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11841 CLEAR_CLASSTYPE_MARKED (ref
);
11847 tree current_local_enum
= NULL_TREE
;
11849 /* Begin compiling the definition of an enumeration type.
11850 NAME is its name (or null if anonymous).
11851 Returns the type object, as yet incomplete.
11852 Also records info about it so that build_enumerator
11853 may be used to declare the individual values as they are read. */
11859 register tree enumtype
= NULL_TREE
;
11860 struct binding_level
*b
= inner_binding_level
;
11862 /* We are wasting space here and putting these on the permanent_obstack so
11863 that typeid(local enum) will work correctly. */
11865 if (processing_template_decl
&& current_function_decl
)
11868 end_temporary_allocation ();
11870 /* If this is the real definition for a previous forward reference,
11871 fill in the contents in the same object that used to be the
11872 forward reference. */
11874 if (name
!= NULL_TREE
)
11875 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11877 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11878 cp_error ("multiple definition of `%#T'", enumtype
);
11881 enumtype
= make_node (ENUMERAL_TYPE
);
11882 pushtag (name
, enumtype
, 0);
11885 if (current_class_type
)
11886 TREE_ADDRESSABLE (b
->tags
) = 1;
11888 current_local_enum
= NULL_TREE
;
11890 /* We don't copy this value because build_enumerator needs to do it. */
11891 enum_next_value
= integer_zero_node
;
11894 GNU_xref_decl (current_function_decl
, enumtype
);
11898 /* After processing and defining all the values of an enumeration type,
11899 install their decls in the enumeration type and finish it off.
11900 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11901 Returns ENUMTYPE. */
11904 finish_enum (enumtype
)
11907 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11908 /* Calculate the maximum value of any enumerator in this type. */
11910 tree values
= TYPE_VALUES (enumtype
);
11915 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11920 /* The TREE_VALUE is a CONST_DECL for this enumeration
11922 decl
= TREE_VALUE (pair
);
11924 /* The DECL_INITIAL will be NULL if we are processing a
11925 template declaration and this enumeration constant had no
11926 explicit initializer. */
11927 value
= DECL_INITIAL (decl
);
11928 if (value
&& !processing_template_decl
)
11930 /* Set the TREE_TYPE for the VALUE as well. That's so
11931 that when we call decl_constant_value we get an
11932 entity of the right type (but with the constant
11933 value). Since we shouldn't ever call
11934 decl_constant_value on a template type, there's no
11935 reason to do that when processing_template_decl.
11936 And, if the expression is something like a
11937 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
11938 wreak havoc on the intended type of the expression.
11940 Of course, there's also no point in trying to compute
11941 minimum or maximum values if we're in a template. */
11942 TREE_TYPE (value
) = enumtype
;
11945 minnode
= maxnode
= value
;
11946 else if (tree_int_cst_lt (maxnode
, value
))
11948 else if (tree_int_cst_lt (value
, minnode
))
11952 if (processing_template_decl
)
11953 /* If this is just a template, leave the CONST_DECL
11954 alone. That way tsubst_copy will find CONST_DECLs for
11955 CONST_DECLs, and not INTEGER_CSTs. */
11958 /* In the list we're building up, we want the enumeration
11959 values, not the CONST_DECLs. */
11960 TREE_VALUE (pair
) = value
;
11964 maxnode
= minnode
= integer_zero_node
;
11966 TYPE_VALUES (enumtype
) = nreverse (values
);
11968 if (processing_template_decl
)
11970 tree scope
= current_scope ();
11971 if (scope
&& TREE_CODE (scope
) == FUNCTION_DECL
)
11973 add_tree (build_min (TAG_DEFN
, enumtype
));
11974 resume_temporary_allocation ();
11980 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
11981 int lowprec
= min_precision (minnode
, unsignedp
);
11982 int highprec
= min_precision (maxnode
, unsignedp
);
11983 int precision
= MAX (lowprec
, highprec
);
11985 TYPE_SIZE (enumtype
) = NULL_TREE
;
11987 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11989 TYPE_PRECISION (enumtype
) = precision
;
11991 fixup_unsigned_type (enumtype
);
11993 fixup_signed_type (enumtype
);
11995 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
11996 /* Use the width of the narrowest normal C type which is wide enough. */
11997 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
12000 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
12002 TYPE_SIZE (enumtype
) = 0;
12003 layout_type (enumtype
);
12009 /* Fix up all variant types of this enum type. */
12010 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
12011 tem
= TYPE_NEXT_VARIANT (tem
))
12013 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
12014 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
12015 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
12016 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
12017 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
12018 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
12019 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
12020 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
12021 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
12025 /* Finish debugging output for this type. */
12026 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
12031 /* Build and install a CONST_DECL for an enumeration constant of the
12032 enumeration type TYPE whose NAME and VALUE (if any) are provided.
12033 Assignment of sequential values by default is handled here. */
12036 build_enumerator (name
, value
, type
)
12044 /* Remove no-op casts from the value. */
12046 STRIP_TYPE_NOPS (value
);
12048 if (! processing_template_decl
)
12050 /* Validate and default VALUE. */
12051 if (value
!= NULL_TREE
)
12053 if (TREE_READONLY_DECL_P (value
))
12054 value
= decl_constant_value (value
);
12056 if (TREE_CODE (value
) == INTEGER_CST
)
12058 value
= default_conversion (value
);
12059 constant_expression_warning (value
);
12063 cp_error ("enumerator value for `%D' not integer constant", name
);
12068 /* Default based on previous value. */
12069 if (value
== NULL_TREE
&& ! processing_template_decl
)
12071 value
= enum_next_value
;
12073 cp_error ("overflow in enumeration values at `%D'", name
);
12076 /* Remove no-op casts from the value. */
12078 STRIP_TYPE_NOPS (value
);
12080 /* To fix MAX_VAL enum consts. (bkoz) */
12081 TREE_TYPE (value
) = integer_type_node
;
12085 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12086 Even in other cases, we will later (in finish_enum) be setting the
12088 if (value
!= NULL_TREE
)
12089 value
= copy_node (value
);
12091 /* C++ associates enums with global, function, or class declarations. */
12093 context
= current_scope ();
12094 if (context
&& context
== current_class_type
)
12095 /* This enum declaration is local to the class. */
12096 decl
= build_lang_field_decl (CONST_DECL
, name
, type
);
12098 /* It's a global enum, or it's local to a function. (Note local to
12099 a function could mean local to a class method. */
12100 decl
= build_decl (CONST_DECL
, name
, type
);
12102 DECL_CONTEXT (decl
) = FROB_CONTEXT (context
);
12103 DECL_INITIAL (decl
) = value
;
12104 TREE_READONLY (decl
) = 1;
12106 if (context
&& context
== current_class_type
)
12108 pushdecl_class_level (decl
);
12109 TREE_CHAIN (decl
) = current_local_enum
;
12110 current_local_enum
= decl
;
12115 GNU_xref_decl (current_function_decl
, decl
);
12118 if (! processing_template_decl
)
12120 /* Set basis for default for next value. */
12121 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12122 integer_one_node
, PLUS_EXPR
);
12123 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12126 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12130 /* Called after we have finished the declaration of an enumeration
12131 type, and, perhaps, some objects whose type involves the
12132 enumeration type. DECL, if non-NULL, is the declaration of the
12135 If CURRENT_LOCAL_ENUM is NULL, the DECL is returned.
12137 If CURRENT_LOCAL_ENUM is non-NULL, it should be the CONST_DECL for
12138 the last enumeration constant of an enumeration type that is a
12139 member of a class. The enumeration constants are already chained
12140 together through their TREE_CHAIN fields. This function sets the
12141 TREE_CHAIN of the last enumeration constant to DECL. The
12142 CONST_DECL for the last enumeration constant is returned.
12144 CURRENT_LOCAL_ENUM will always be NULL when this function
12148 grok_enum_decls (decl
)
12151 tree d
= current_local_enum
;
12153 if (d
== NULL_TREE
)
12158 if (TREE_CHAIN (d
) == NULL_TREE
)
12160 TREE_CHAIN (d
) = decl
;
12163 d
= TREE_CHAIN (d
);
12166 decl
= current_local_enum
;
12167 current_local_enum
= NULL_TREE
;
12172 static int function_depth
;
12174 /* Create the FUNCTION_DECL for a function definition.
12175 DECLSPECS and DECLARATOR are the parts of the declaration;
12176 they describe the function's name and the type it returns,
12177 but twisted together in a fashion that parallels the syntax of C.
12179 This function creates a binding context for the function body
12180 as well as setting up the FUNCTION_DECL in current_function_decl.
12182 Returns 1 on success. If the DECLARATOR is not suitable for a function
12183 (it defines a datum instead), we return 0, which tells
12184 yyparse to report a parse error.
12186 For C++, we must first check whether that datum makes any sense.
12187 For example, "class A local_a(1,2);" means that variable local_a
12188 is an aggregate of type A, which should have a constructor
12189 applied to it with the argument list [1, 2].
12191 @@ There is currently no way to retrieve the storage
12192 @@ allocated to FUNCTION (or all of its parms) if we return
12193 @@ something we had previously. */
12196 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12197 tree declspecs
, declarator
, attrs
;
12201 tree ctype
= NULL_TREE
;
12204 extern int have_extern_spec
;
12205 extern int used_extern_spec
;
12206 int doing_friend
= 0;
12208 /* Sanity check. */
12209 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12210 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12212 /* Assume, until we see it does. */
12213 current_function_returns_value
= 0;
12214 current_function_returns_null
= 0;
12215 warn_about_return_type
= 0;
12217 shadowed_labels
= 0;
12218 current_function_assigns_this
= 0;
12219 current_function_just_assigned_this
= 0;
12220 current_function_parms_stored
= 0;
12221 original_result_rtx
= NULL_RTX
;
12222 base_init_expr
= NULL_TREE
;
12223 current_base_init_list
= NULL_TREE
;
12224 current_member_init_list
= NULL_TREE
;
12225 ctor_label
= dtor_label
= NULL_TREE
;
12226 static_labelno
= 0;
12228 clear_temp_name ();
12230 /* This should only be done once on the top most decl. */
12231 if (have_extern_spec
&& !used_extern_spec
)
12233 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12234 used_extern_spec
= 1;
12239 decl1
= declarator
;
12242 /* What was this testing for, exactly? */
12243 if (! DECL_ARGUMENTS (decl1
)
12244 && !DECL_STATIC_FUNCTION_P (decl1
)
12245 && !DECL_ARTIFICIAL (decl1
)
12246 && DECL_CLASS_SCOPE_P (decl1
)
12247 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12248 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12250 tree binding
= binding_for_name (DECL_NAME (decl1
),
12251 current_namespace
);
12252 cp_error ("redeclaration of `%#D'", decl1
);
12253 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12254 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12255 else if (BINDING_VALUE (binding
))
12256 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12260 fntype
= TREE_TYPE (decl1
);
12261 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12262 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12264 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12265 class is in the (lexical) scope of the class in which it is
12267 if (!ctype
&& DECL_FRIEND_P (decl1
))
12269 ctype
= DECL_CLASS_CONTEXT (decl1
);
12271 /* CTYPE could be null here if we're dealing with a template;
12272 for example, `inline friend float foo()' inside a template
12273 will have no CTYPE set. */
12274 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12280 /* In a fcn definition, arg types must be complete. */
12281 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12283 /* In case some arg types were completed since the declaration was
12284 parsed, fix up the decls. */
12286 tree t
= DECL_ARGUMENTS (decl1
);
12287 for (; t
; t
= TREE_CHAIN (t
))
12288 layout_decl (t
, 0);
12291 last_function_parms
= DECL_ARGUMENTS (decl1
);
12292 last_function_parm_tags
= NULL_TREE
;
12296 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12297 /* If the declarator is not suitable for a function definition,
12298 cause a syntax error. */
12299 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12301 fntype
= TREE_TYPE (decl1
);
12303 restype
= TREE_TYPE (fntype
);
12304 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12305 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12307 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12308 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12309 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12310 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12311 fntype
= build_function_type (integer_type_node
,
12312 TYPE_ARG_TYPES (fntype
));
12314 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12316 TYPE_ARG_TYPES (fntype
));
12317 TREE_TYPE (decl1
) = fntype
;
12320 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12321 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12322 else if (DECL_MAIN_P (decl1
))
12324 /* If this doesn't return integer_type, complain. */
12325 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12327 if (pedantic
|| warn_return_type
)
12328 pedwarn ("return type for `main' changed to `int'");
12329 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12331 warn_about_return_type
= 0;
12335 /* Warn if function was previously implicitly declared
12336 (but not if we warned then). */
12337 if (! warn_implicit
12338 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12339 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12341 current_function_decl
= decl1
;
12342 /* Save the parm names or decls from this function's declarator
12343 where store_parm_decls will find them. */
12344 current_function_parms
= last_function_parms
;
12345 current_function_parm_tags
= last_function_parm_tags
;
12347 announce_function (decl1
);
12349 if (! processing_template_decl
)
12351 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12353 cp_error ("return-type `%#T' is an incomplete type",
12354 TREE_TYPE (fntype
));
12356 /* Make it return void instead, but don't change the
12357 type of the DECL_RESULT, in case we have a named return value. */
12360 = build_cplus_method_type (build_type_variant (ctype
,
12361 TREE_READONLY (decl1
),
12362 TREE_SIDE_EFFECTS (decl1
)),
12364 FUNCTION_ARG_CHAIN (decl1
));
12367 = build_function_type (void_type_node
,
12368 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12369 DECL_RESULT (decl1
)
12370 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12371 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12372 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12375 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12376 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12377 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12380 if (warn_about_return_type
)
12381 pedwarn ("return-type defaults to `int'");
12383 /* Effective C++ rule 15. See also c_expand_return. */
12385 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12386 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12387 cp_warning ("`operator=' should return a reference to `*this'");
12389 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12390 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12391 DECL_INITIAL (decl1
) = error_mark_node
;
12393 /* This function exists in static storage.
12394 (This does not mean `static' in the C sense!) */
12395 TREE_STATIC (decl1
) = 1;
12397 /* Set up current_class_type, and enter the scope of the class, if
12400 push_nested_class (ctype
, 1);
12401 else if (DECL_STATIC_FUNCTION_P (decl1
))
12402 push_nested_class (DECL_CONTEXT (decl1
), 2);
12404 /* We must call push_template_decl after current_class_type is set
12405 up. (If we are processing inline definitions after exiting a
12406 class scope, current_class_type will be NULL_TREE until set above
12407 by push_nested_class.) */
12408 if (processing_template_decl
)
12409 decl1
= push_template_decl (decl1
);
12411 /* Record the decl so that the function name is defined.
12412 If we already have a decl for this name, and it is a FUNCTION_DECL,
12413 use the old decl. */
12414 if (!processing_template_decl
&& pre_parsed_p
== 0)
12416 /* A specialization is not used to guide overload resolution. */
12417 if ((flag_guiding_decls
12418 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12419 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12420 decl1
= pushdecl (decl1
);
12423 /* We need to set the DECL_CONTEXT. */
12424 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12425 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12426 /* And make sure we have enough default args. */
12427 check_default_args (decl1
);
12429 DECL_MAIN_VARIANT (decl1
) = decl1
;
12430 fntype
= TREE_TYPE (decl1
);
12433 current_function_decl
= decl1
;
12435 if (DECL_INTERFACE_KNOWN (decl1
))
12437 tree ctx
= hack_decl_function_context (decl1
);
12439 if (DECL_NOT_REALLY_EXTERN (decl1
))
12440 DECL_EXTERNAL (decl1
) = 0;
12442 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12443 && TREE_PUBLIC (ctx
))
12444 /* This is a function in a local class in an extern inline
12446 comdat_linkage (decl1
);
12448 /* If this function belongs to an interface, it is public.
12449 If it belongs to someone else's interface, it is also external.
12450 It doesn't matter whether it's inline or not. */
12451 else if (interface_unknown
== 0
12452 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12453 || flag_alt_external_templates
))
12455 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12456 || processing_template_decl
)
12457 DECL_EXTERNAL (decl1
)
12459 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12461 DECL_EXTERNAL (decl1
) = 0;
12462 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12463 DECL_INTERFACE_KNOWN (decl1
) = 1;
12467 /* This is a definition, not a reference.
12468 So clear DECL_EXTERNAL. */
12469 DECL_EXTERNAL (decl1
) = 0;
12471 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12472 && ! DECL_INTERFACE_KNOWN (decl1
)
12473 /* Don't try to defer nested functions for now. */
12474 && ! hack_decl_function_context (decl1
))
12475 DECL_DEFER_OUTPUT (decl1
) = 1;
12477 DECL_INTERFACE_KNOWN (decl1
) = 1;
12480 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12482 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12483 TREE_TYPE (decl1
) = fntype
12484 = build_function_type (TREE_TYPE (fntype
),
12485 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12486 current_function_parms
= TREE_CHAIN (current_function_parms
);
12487 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12490 restype
= TREE_TYPE (fntype
);
12494 /* If we're compiling a friend function, neither of the variables
12495 current_class_ptr nor current_class_type will have values. */
12496 if (! doing_friend
)
12498 /* We know that this was set up by `grokclassfn'.
12499 We do not wait until `store_parm_decls', since evil
12500 parse errors may never get us to that point. Here
12501 we keep the consistency between `current_class_type'
12502 and `current_class_ptr'. */
12503 tree t
= current_function_parms
;
12505 my_friendly_assert (t
!= NULL_TREE
12506 && TREE_CODE (t
) == PARM_DECL
, 162);
12508 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12510 int i
= suspend_momentary ();
12512 /* Fool build_indirect_ref. */
12513 current_class_ptr
= NULL_TREE
;
12514 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12515 current_class_ptr
= t
;
12516 resume_momentary (i
);
12519 /* We're having a signature pointer here. */
12520 current_class_ref
= current_class_ptr
= t
;
12526 current_class_ptr
= current_class_ref
= NULL_TREE
;
12530 current_binding_level
->parm_flag
= 1;
12532 GNU_xref_function (decl1
, current_function_parms
);
12535 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12536 make_function_rtl (decl1
);
12538 /* Promote the value to int before returning it. */
12539 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12540 restype
= type_promotes_to (restype
);
12542 /* If this fcn was already referenced via a block-scope `extern' decl
12543 (or an implicit decl), propagate certain information about the usage. */
12544 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12545 TREE_ADDRESSABLE (decl1
) = 1;
12547 if (DECL_RESULT (decl1
) == NULL_TREE
)
12549 DECL_RESULT (decl1
)
12550 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12551 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12552 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12555 /* Allocate further tree nodes temporarily during compilation
12556 of this function only. Tiemann moved up here from bottom of fn. */
12557 /* If this is a nested function, then we must continue to allocate RTL
12558 on the permanent obstack in case we need to inline it later. */
12559 if (! hack_decl_function_context (decl1
))
12560 temporary_allocation ();
12562 if (processing_template_decl
)
12564 ++minimal_parse_mode
;
12565 last_tree
= DECL_SAVED_TREE (decl1
)
12566 = build_nt (EXPR_STMT
, void_zero_node
);
12571 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12572 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12574 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12575 ctor_label
= NULL_TREE
;
12579 dtor_label
= NULL_TREE
;
12580 if (DECL_CONSTRUCTOR_P (decl1
))
12581 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12587 /* Called after store_parm_decls for a function-try-block. We need to update
12588 last_parm_cleanup_insn so that the base initializers for a constructor
12589 are run within this block, not before it. */
12592 expand_start_early_try_stmts ()
12594 expand_start_try_stmts ();
12595 last_parm_cleanup_insn
= get_last_insn ();
12598 /* Store the parameter declarations into the current function declaration.
12599 This is called after parsing the parameter declarations, before
12600 digesting the body of the function.
12602 Also install to binding contour return value identifier, if any. */
12605 store_parm_decls ()
12607 register tree fndecl
= current_function_decl
;
12608 register tree parm
;
12609 int parms_have_cleanups
= 0;
12610 tree cleanups
= NULL_TREE
;
12612 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12613 tree specparms
= current_function_parms
;
12615 /* This is a list of types declared among parms in a prototype. */
12616 tree parmtags
= current_function_parm_tags
;
12618 /* This is a chain of any other decls that came in among the parm
12619 declarations. If a parm is declared with enum {foo, bar} x;
12620 then CONST_DECLs for foo and bar are put here. */
12621 tree nonparms
= NULL_TREE
;
12623 if (toplevel_bindings_p ())
12624 fatal ("parse errors have confused me too much");
12626 /* Initialize RTL machinery. */
12627 init_function_start (fndecl
, input_filename
, lineno
);
12629 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12630 declare_function_name ();
12632 /* Create a binding level for the parms. */
12633 expand_start_bindings (0);
12635 if (specparms
!= NULL_TREE
)
12637 /* This case is when the function was defined with an ANSI prototype.
12638 The parms already have decls, so we need not do anything here
12639 except record them as in effect
12640 and complain if any redundant old-style parm decls were written. */
12642 register tree next
;
12644 /* Must clear this because it might contain TYPE_DECLs declared
12646 storedecls (NULL_TREE
);
12648 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12650 next
= TREE_CHAIN (parm
);
12651 if (TREE_CODE (parm
) == PARM_DECL
)
12654 if (DECL_NAME (parm
) == NULL_TREE
)
12658 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12659 cp_error ("parameter `%D' declared void", parm
);
12662 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12663 A parameter is assumed not to have any side effects.
12664 If this should change for any reason, then this
12665 will have to wrap the bashed reference type in a save_expr.
12667 Also, if the parameter type is declared to be an X
12668 and there is an X(X&) constructor, we cannot lay it
12669 into the stack (any more), so we make this parameter
12670 look like it is really of reference type. Functions
12671 which pass parameters to this function will know to
12672 create a temporary in their frame, and pass a reference
12675 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12676 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12677 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12681 if (! processing_template_decl
12682 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12684 expand_decl (parm
);
12685 parms_have_cleanups
= 1;
12687 /* Keep track of the cleanups. */
12688 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12693 /* If we find an enum constant or a type tag,
12694 put it aside for the moment. */
12695 TREE_CHAIN (parm
) = NULL_TREE
;
12696 nonparms
= chainon (nonparms
, parm
);
12700 /* Get the decls in their original chain order
12701 and record in the function. This is all and only the
12702 PARM_DECLs that were pushed into scope by the loop above. */
12703 DECL_ARGUMENTS (fndecl
) = getdecls ();
12705 storetags (chainon (parmtags
, gettags ()));
12708 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12710 /* Now store the final chain of decls for the arguments
12711 as the decl-chain of the current lexical scope.
12712 Put the enumerators in as well, at the front so that
12713 DECL_ARGUMENTS is not modified. */
12715 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12717 /* Initialize the RTL code for the function. */
12718 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12719 if (! processing_template_decl
)
12720 expand_function_start (fndecl
, parms_have_cleanups
);
12722 current_function_parms_stored
= 1;
12724 /* If this function is `main', emit a call to `__main'
12725 to run global initializers, etc. */
12726 if (DECL_MAIN_P (fndecl
))
12727 expand_main_function ();
12729 /* Now that we have initialized the parms, we can start their
12730 cleanups. We cannot do this before, since expand_decl_cleanup
12731 should not be called before the parm can be used. */
12733 && ! processing_template_decl
)
12735 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12737 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12738 cp_error ("parser lost in parsing declaration of `%D'",
12739 TREE_PURPOSE (cleanups
));
12743 /* Create a binding contour which can be used to catch
12744 cleanup-generated temporaries. Also, if the return value needs or
12745 has initialization, deal with that now. */
12746 if (parms_have_cleanups
)
12749 expand_start_bindings (0);
12752 if (! processing_template_decl
&& flag_exceptions
)
12754 /* Do the starting of the exception specifications, if we have any. */
12755 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12756 expand_start_eh_spec ();
12759 last_parm_cleanup_insn
= get_last_insn ();
12760 last_dtor_insn
= get_last_insn ();
12763 /* Bind a name and initialization to the return value of
12764 the current function. */
12767 store_return_init (return_id
, init
)
12768 tree return_id
, init
;
12770 tree decl
= DECL_RESULT (current_function_decl
);
12773 /* Give this error as many times as there are occurrences,
12774 so that users can use Emacs compilation buffers to find
12775 and fix all such places. */
12776 pedwarn ("ANSI C++ does not permit named return values");
12778 if (return_id
!= NULL_TREE
)
12780 if (DECL_NAME (decl
) == NULL_TREE
)
12782 DECL_NAME (decl
) = return_id
;
12783 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12786 cp_error ("return identifier `%D' already in place", decl
);
12789 /* Can't let this happen for constructors. */
12790 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12792 error ("can't redefine default return value for constructors");
12796 /* If we have a named return value, put that in our scope as well. */
12797 if (DECL_NAME (decl
) != NULL_TREE
)
12799 /* If this named return value comes in a register,
12800 put it in a pseudo-register. */
12801 if (DECL_REGISTER (decl
))
12803 original_result_rtx
= DECL_RTL (decl
);
12804 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12807 /* Let `cp_finish_decl' know that this initializer is ok. */
12808 DECL_INITIAL (decl
) = init
;
12811 if (minimal_parse_mode
)
12812 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12813 copy_to_permanent (init
)));
12815 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12820 /* Finish up a function declaration and compile that function
12821 all the way to assembler language output. The free the storage
12822 for the function definition.
12824 This is called after parsing the body of the function definition.
12825 LINENO is the current line number.
12827 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12828 (and expand_end_bindings) must be made to take care of the binding
12829 contour for the base initializers. This is only relevant for
12832 NESTED is nonzero if we were in the middle of compiling another function
12833 when we started on this one. */
12836 finish_function (lineno
, call_poplevel
, nested
)
12841 register tree fndecl
= current_function_decl
;
12842 tree fntype
, ctype
= NULL_TREE
;
12843 rtx last_parm_insn
, insns
;
12844 /* Label to use if this function is supposed to return a value. */
12845 tree no_return_label
= NULL_TREE
;
12846 tree decls
= NULL_TREE
;
12848 /* When we get some parse errors, we can end up without a
12849 current_function_decl, so cope. */
12850 if (fndecl
== NULL_TREE
)
12853 if (! nested
&& function_depth
> 1)
12856 fntype
= TREE_TYPE (fndecl
);
12858 /* TREE_READONLY (fndecl) = 1;
12859 This caused &foo to be of type ptr-to-const-function
12860 which then got a warning when stored in a ptr-to-function variable. */
12862 /* This happens on strange parse errors. */
12863 if (! current_function_parms_stored
)
12866 store_parm_decls ();
12869 if (processing_template_decl
)
12871 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12873 decls
= getdecls ();
12874 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12875 poplevel (decls
!= NULL_TREE
, 0, 0);
12880 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12882 tree ttype
= target_type (fntype
);
12885 if (IS_AGGR_TYPE (ttype
))
12886 /* Let debugger know it should output info for this type. */
12887 note_debug_info_needed (ttype
);
12889 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12891 ttype
= target_type (TREE_TYPE (parmdecl
));
12892 if (IS_AGGR_TYPE (ttype
))
12893 /* Let debugger know it should output info for this type. */
12894 note_debug_info_needed (ttype
);
12898 /* Clean house because we will need to reorder insns here. */
12899 do_pending_stack_adjust ();
12903 tree binfo
= TYPE_BINFO (current_class_type
);
12904 tree cond
= integer_one_node
;
12906 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12908 int ok_to_optimize_dtor
= 0;
12909 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12911 if (current_function_assigns_this
)
12912 cond
= build (NE_EXPR
, boolean_type_node
,
12913 current_class_ptr
, integer_zero_node
);
12916 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12918 /* If this destructor is empty, then we don't need to check
12919 whether `this' is NULL in some cases. */
12920 if ((flag_this_is_variable
& 1) == 0)
12921 ok_to_optimize_dtor
= 1;
12922 else if (empty_dtor
)
12923 ok_to_optimize_dtor
12924 = (n_baseclasses
== 0
12925 || (n_baseclasses
== 1
12926 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12929 /* These initializations might go inline. Protect
12930 the binding level of the parms. */
12932 expand_start_bindings (0);
12934 if (current_function_assigns_this
)
12936 current_function_assigns_this
= 0;
12937 current_function_just_assigned_this
= 0;
12940 /* Generate the code to call destructor on base class.
12941 If this destructor belongs to a class with virtual
12942 functions, then set the virtual function table
12943 pointer to represent the type of our base class. */
12945 /* This side-effect makes call to `build_delete' generate the
12946 code we have to have at the end of this destructor. */
12947 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12949 /* These are two cases where we cannot delegate deletion. */
12950 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12951 || TYPE_GETS_REG_DELETE (current_class_type
))
12952 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12953 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12955 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12956 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12958 /* If we did not assign to this, then `this' is non-zero at
12959 the end of a destructor. As a special optimization, don't
12960 emit test if this is an empty destructor. If it does nothing,
12961 it does nothing. If it calls a base destructor, the base
12962 destructor will perform the test. */
12964 if (exprstmt
!= error_mark_node
12965 && (TREE_CODE (exprstmt
) != NOP_EXPR
12966 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12967 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12969 expand_label (dtor_label
);
12970 if (cond
!= integer_one_node
)
12971 expand_start_cond (cond
, 0);
12972 if (exprstmt
!= void_zero_node
)
12973 /* Don't call `expand_expr_stmt' if we're not going to do
12974 anything, since -Wall will give a diagnostic. */
12975 expand_expr_stmt (exprstmt
);
12977 /* Run destructor on all virtual baseclasses. */
12978 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12980 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12981 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12982 in_charge_node
, integer_two_node
), 0);
12985 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12987 tree vb
= get_vbase
12988 (BINFO_TYPE (vbases
),
12989 TYPE_BINFO (current_class_type
));
12991 (build_scoped_method_call
12992 (current_class_ref
, vb
, dtor_identifier
,
12993 build_expr_list (NULL_TREE
, integer_zero_node
)));
12995 vbases
= TREE_CHAIN (vbases
);
12997 expand_end_cond ();
13000 do_pending_stack_adjust ();
13001 if (cond
!= integer_one_node
)
13002 expand_end_cond ();
13005 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
13007 virtual_size
= c_sizeof (current_class_type
);
13009 /* At the end, call delete if that's what's requested. */
13011 /* FDIS sez: At the point of definition of a virtual destructor
13012 (including an implicit definition), non-placement operator
13013 delete shall be looked up in the scope of the destructor's
13014 class and if found shall be accessible and unambiguous.
13016 This is somewhat unclear, but I take it to mean that if the
13017 class only defines placement deletes we don't do anything here.
13018 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
13019 for us if they ever try to delete one of these. */
13021 if (TYPE_GETS_REG_DELETE (current_class_type
)
13022 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13023 exprstmt
= build_op_delete_call
13024 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
13025 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
13027 exprstmt
= NULL_TREE
;
13031 cond
= build (BIT_AND_EXPR
, integer_type_node
,
13032 in_charge_node
, integer_one_node
);
13033 expand_start_cond (cond
, 0);
13034 expand_expr_stmt (exprstmt
);
13035 expand_end_cond ();
13038 /* End of destructor. */
13039 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
13040 poplevel (2, 0, 0); /* XXX change to 1 */
13042 /* Back to the top of destructor. */
13043 /* Don't execute destructor code if `this' is NULL. */
13047 /* If the dtor is empty, and we know there is not possible way we
13048 could use any vtable entries, before they are possibly set by
13049 a base class dtor, we don't have to setup the vtables, as we
13050 know that any base class dtoring will set up any vtables it
13051 needs. We avoid MI, because one base class dtor can do a
13052 virtual dispatch to an overridden function that would need to
13053 have a non-related vtable set up, we cannot avoid setting up
13054 vtables in that case. We could change this to see if there is
13055 just one vtable. */
13056 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13058 /* Make all virtual function table pointers in non-virtual base
13059 classes point to CURRENT_CLASS_TYPE's virtual function
13061 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13063 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13064 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13067 if (! ok_to_optimize_dtor
)
13069 cond
= build_binary_op (NE_EXPR
,
13070 current_class_ptr
, integer_zero_node
, 1);
13071 expand_start_cond (cond
, 0);
13074 insns
= get_insns ();
13077 last_parm_insn
= get_first_nonparm_insn ();
13078 if (last_parm_insn
== NULL_RTX
)
13079 last_parm_insn
= get_last_insn ();
13081 last_parm_insn
= previous_insn (last_parm_insn
);
13083 emit_insns_after (insns
, last_parm_insn
);
13085 if (! ok_to_optimize_dtor
)
13086 expand_end_cond ();
13088 else if (current_function_assigns_this
)
13090 /* Does not need to call emit_base_init, because
13091 that is done (if needed) just after assignment to this
13094 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13096 end_protect_partials ();
13097 expand_label (ctor_label
);
13098 ctor_label
= NULL_TREE
;
13102 decls
= getdecls ();
13103 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13104 poplevel (decls
!= NULL_TREE
, 0, 0);
13106 /* c_expand_return knows to return 'this' from a constructor. */
13107 c_expand_return (NULL_TREE
);
13109 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13110 && return_label
!= NULL_RTX
)
13111 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13113 current_function_assigns_this
= 0;
13114 current_function_just_assigned_this
= 0;
13115 base_init_expr
= NULL_TREE
;
13117 else if (DECL_CONSTRUCTOR_P (fndecl
))
13119 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13120 /* Allow constructor for a type to get a new instance of the object
13121 using `build_new'. */
13122 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13123 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13125 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13127 if (flag_this_is_variable
> 0)
13129 cond
= build_binary_op (EQ_EXPR
,
13130 current_class_ptr
, integer_zero_node
, 1);
13131 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13132 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13135 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13139 if (flag_this_is_variable
> 0)
13141 expand_start_cond (cond
, 0);
13142 expand_expr_stmt (thenclause
);
13143 expand_end_cond ();
13146 /* Emit insns from `emit_base_init' which sets up virtual
13147 function table pointer(s). */
13148 if (base_init_expr
)
13150 expand_expr_stmt (base_init_expr
);
13151 base_init_expr
= NULL_TREE
;
13154 insns
= get_insns ();
13157 /* This is where the body of the constructor begins. */
13159 emit_insns_after (insns
, last_parm_cleanup_insn
);
13161 end_protect_partials ();
13163 /* This is where the body of the constructor ends. */
13164 expand_label (ctor_label
);
13165 ctor_label
= NULL_TREE
;
13169 decls
= getdecls ();
13170 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13171 poplevel (decls
!= NULL_TREE
, 1, 0);
13174 /* c_expand_return knows to return 'this' from a constructor. */
13175 c_expand_return (NULL_TREE
);
13177 current_function_assigns_this
= 0;
13178 current_function_just_assigned_this
= 0;
13180 else if (DECL_MAIN_P (fndecl
))
13182 /* Make it so that `main' always returns 0 by default. */
13184 c_expand_return (integer_one_node
);
13186 c_expand_return (integer_zero_node
);
13189 else if (return_label
!= NULL_RTX
13190 && current_function_return_value
== NULL_TREE
13191 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13192 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13194 if (flag_exceptions
)
13195 expand_exception_blocks ();
13197 /* If this function is supposed to return a value, ensure that
13198 we do not fall into the cleanups by mistake. The end of our
13199 function will look like this:
13201 user code (may have return stmt somewhere)
13202 goto no_return_label
13207 NOTE_INSN_FUNCTION_END
13211 If the user omits a return stmt in the USER CODE section, we
13212 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13213 Otherwise, we won't. */
13214 if (no_return_label
)
13216 DECL_CONTEXT (no_return_label
) = fndecl
;
13217 DECL_INITIAL (no_return_label
) = error_mark_node
;
13218 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13219 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13220 expand_goto (no_return_label
);
13225 /* Remove the binding contour which is used
13226 to catch cleanup-generated temporaries. */
13227 expand_end_bindings (0, 0, 0);
13228 poplevel (0, 0, 0);
13230 /* Emit label at beginning of cleanup code for parameters. */
13231 emit_label (cleanup_label
);
13234 /* Get return value into register if that's where it's supposed to be. */
13235 if (original_result_rtx
)
13236 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13238 /* Finish building code that will trigger warnings if users forget
13239 to make their functions return values. */
13240 if (no_return_label
|| cleanup_label
)
13241 emit_jump (return_label
);
13242 if (no_return_label
)
13244 /* We don't need to call `expand_*_return' here because we
13245 don't need any cleanups here--this path of code is only
13246 for error checking purposes. */
13247 expand_label (no_return_label
);
13250 /* Generate rtl for function exit. */
13251 expand_function_end (input_filename
, lineno
, 1);
13254 /* This must come after expand_function_end because cleanups might
13255 have declarations (from inline functions) that need to go into
13256 this function's blocks. */
13257 if (current_binding_level
->parm_flag
!= 1)
13258 my_friendly_abort (122);
13259 poplevel (1, 0, 1);
13261 /* Reset scope for C++: if we were in the scope of a class,
13262 then when we finish this function, we are not longer so.
13263 This cannot be done until we know for sure that no more
13264 class members will ever be referenced in this function
13265 (i.e., calls to destructors). */
13266 if (current_class_name
)
13268 ctype
= current_class_type
;
13269 pop_nested_class (1);
13272 /* Must mark the RESULT_DECL as being in this function. */
13273 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13275 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13276 to the FUNCTION_DECL node itself. */
13277 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13279 if (! processing_template_decl
)
13281 int saved_flag_keep_inline_functions
=
13282 flag_keep_inline_functions
;
13284 /* So we can tell if jump_optimize sets it to 1. */
13287 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13288 && hack_decl_function_context (fndecl
))
13289 /* Trick rest_of_compilation into not deferring output of this
13290 function, even if it is inline, since the rtl_obstack for
13291 this function is the function_obstack of the enclosing
13292 function and will be deallocated when the enclosing
13293 function is gone. See save_tree_status. */
13294 flag_keep_inline_functions
= 1;
13296 /* Run the optimizers and output the assembler code for this
13299 if (DECL_ARTIFICIAL (fndecl
))
13301 /* Do we really *want* to inline this synthesized method? */
13303 int save_fif
= flag_inline_functions
;
13304 flag_inline_functions
= 1;
13306 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13307 will check our size. */
13308 DECL_INLINE (fndecl
) = 0;
13310 rest_of_compilation (fndecl
);
13311 flag_inline_functions
= save_fif
;
13314 rest_of_compilation (fndecl
);
13316 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13318 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13320 /* Set DECL_EXTERNAL so that assemble_external will be called as
13321 necessary. We'll clear it again in finish_file. */
13322 if (! DECL_EXTERNAL (fndecl
))
13323 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13324 DECL_EXTERNAL (fndecl
) = 1;
13325 mark_inline_for_output (fndecl
);
13328 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13329 note_debug_info_needed (ctype
);
13331 current_function_returns_null
|= can_reach_end
;
13333 /* Since we don't normally go through c_expand_return for constructors,
13334 this normally gets the wrong value.
13335 Also, named return values have their return codes emitted after
13336 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13337 if (DECL_CONSTRUCTOR_P (fndecl
)
13338 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13339 current_function_returns_null
= 0;
13341 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13342 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13343 else if ((warn_return_type
|| pedantic
)
13344 && current_function_returns_null
13345 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13347 /* If this function returns non-void and control can drop through,
13349 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13351 /* With just -W, complain only if function returns both with
13352 and without a value. */
13353 else if (extra_warnings
13354 && current_function_returns_value
&& current_function_returns_null
)
13355 warning ("this function may return with or without a value");
13360 /* Free all the tree nodes making up this function. */
13361 /* Switch back to allocating nodes permanently
13362 until we start another function. */
13363 if (processing_template_decl
)
13365 --minimal_parse_mode
;
13366 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13370 permanent_allocation (1);
13372 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13376 /* Stop pointing to the local nodes about to be freed. */
13377 /* But DECL_INITIAL must remain nonzero so we know this
13378 was an actual function definition. */
13379 DECL_INITIAL (fndecl
) = error_mark_node
;
13380 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13381 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13384 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13385 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13386 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13387 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13391 /* Let the error reporting routines know that we're outside a
13392 function. For a nested function, this value is used in
13393 pop_cp_function_context and then reset via pop_function_context. */
13394 current_function_decl
= NULL_TREE
;
13397 named_label_uses
= NULL
;
13398 current_class_ptr
= NULL_TREE
;
13399 current_class_ref
= NULL_TREE
;
13402 /* Create the FUNCTION_DECL for a function definition.
13403 LINE1 is the line number that the definition absolutely begins on.
13404 LINE2 is the line number that the name of the function appears on.
13405 DECLSPECS and DECLARATOR are the parts of the declaration;
13406 they describe the return type and the name of the function,
13407 but twisted together in a fashion that parallels the syntax of C.
13409 This function creates a binding context for the function body
13410 as well as setting up the FUNCTION_DECL in current_function_decl.
13412 Returns a FUNCTION_DECL on success.
13414 If the DECLARATOR is not suitable for a function (it defines a datum
13415 instead), we return 0, which tells yyparse to report a parse error.
13417 May return void_type_node indicating that this method is actually
13418 a friend. See grokfield for more details.
13420 Came here with a `.pushlevel' .
13422 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13423 CHANGES TO CODE IN `grokfield'. */
13426 start_method (declspecs
, declarator
)
13427 tree declarator
, declspecs
;
13429 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13432 /* Something too ugly to handle. */
13433 if (fndecl
== NULL_TREE
)
13436 /* Pass friends other than inline friend functions back. */
13437 if (fndecl
== void_type_node
)
13440 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13441 /* Not a function, tell parser to report parse error. */
13444 if (IS_SIGNATURE (current_class_type
))
13445 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13447 if (DECL_IN_AGGR_P (fndecl
))
13449 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13451 if (DECL_CONTEXT (fndecl
)
13452 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13453 cp_error ("`%D' is already defined in class %s", fndecl
,
13454 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13456 return void_type_node
;
13459 DECL_THIS_INLINE (fndecl
) = 1;
13461 if (flag_default_inline
)
13462 DECL_INLINE (fndecl
) = 1;
13464 /* We process method specializations in finish_struct_1. */
13465 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13466 fndecl
= push_template_decl (fndecl
);
13468 /* We read in the parameters on the maybepermanent_obstack,
13469 but we won't be getting back to them until after we
13470 may have clobbered them. So the call to preserve_data
13471 will keep them safe. */
13474 if (! DECL_FRIEND_P (fndecl
))
13476 if (TREE_CHAIN (fndecl
))
13478 fndecl
= copy_node (fndecl
);
13479 TREE_CHAIN (fndecl
) = NULL_TREE
;
13482 if (DECL_CONSTRUCTOR_P (fndecl
))
13484 if (! grok_ctor_properties (current_class_type
, fndecl
))
13485 return void_type_node
;
13487 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13488 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13491 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13493 /* Make a place for the parms */
13495 current_binding_level
->parm_flag
= 1;
13497 DECL_IN_AGGR_P (fndecl
) = 1;
13501 /* Go through the motions of finishing a function definition.
13502 We don't compile this method until after the whole class has
13505 FINISH_METHOD must return something that looks as though it
13506 came from GROKFIELD (since we are defining a method, after all).
13508 This is called after parsing the body of the function definition.
13509 STMTS is the chain of statements that makes up the function body.
13511 DECL is the ..._DECL that `start_method' provided. */
13514 finish_method (decl
)
13517 register tree fndecl
= decl
;
13520 register tree link
;
13522 if (decl
== void_type_node
)
13525 old_initial
= DECL_INITIAL (fndecl
);
13527 /* Undo the level for the parms (from start_method).
13528 This is like poplevel, but it causes nothing to be
13529 saved. Saving information here confuses symbol-table
13530 output routines. Besides, this information will
13531 be correctly output when this method is actually
13534 /* Clear out the meanings of the local variables of this level;
13535 also record in each decl which block it belongs to. */
13537 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13539 if (DECL_NAME (link
) != NULL_TREE
)
13540 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13541 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13542 DECL_CONTEXT (link
) = NULL_TREE
;
13545 /* Restore all name-meanings of the outer levels
13546 that were shadowed by this level. */
13548 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13549 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13550 for (link
= current_binding_level
->class_shadowed
;
13551 link
; link
= TREE_CHAIN (link
))
13552 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13553 for (link
= current_binding_level
->type_shadowed
;
13554 link
; link
= TREE_CHAIN (link
))
13555 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13557 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13558 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13559 current_binding_level
->parm_flag
,
13560 current_binding_level
->keep
);
13562 poplevel (0, 0, 0);
13564 DECL_INITIAL (fndecl
) = old_initial
;
13566 /* We used to check if the context of FNDECL was different from
13567 current_class_type as another way to get inside here. This didn't work
13568 for String.cc in libg++. */
13569 if (DECL_FRIEND_P (fndecl
))
13571 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13572 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13573 decl
= void_type_node
;
13579 /* Called when a new struct TYPE is defined.
13580 If this structure or union completes the type of any previous
13581 variable declaration, lay it out and output its rtl. */
13584 hack_incomplete_structures (type
)
13589 if (current_binding_level
->incomplete
== NULL_TREE
)
13592 if (!type
) /* Don't do this for class templates. */
13595 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13597 tree decl
= TREE_VALUE (*list
);
13598 if ((decl
&& TREE_TYPE (decl
) == type
)
13599 || (TREE_TYPE (decl
)
13600 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13601 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13603 int toplevel
= toplevel_bindings_p ();
13604 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13605 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13606 layout_type (TREE_TYPE (decl
));
13607 layout_decl (decl
, 0);
13608 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13612 expand_decl (decl
);
13613 cleanup
= maybe_build_cleanup (decl
);
13614 expand_decl_init (decl
);
13615 if (! expand_decl_cleanup (decl
, cleanup
))
13616 cp_error ("parser lost in parsing declaration of `%D'",
13619 *list
= TREE_CHAIN (*list
);
13622 list
= &TREE_CHAIN (*list
);
13626 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13627 See build_delete for information about AUTO_DELETE.
13629 Don't build these on the momentary obstack; they must live
13630 the life of the binding contour. */
13633 maybe_build_cleanup_1 (decl
, auto_delete
)
13634 tree decl
, auto_delete
;
13636 tree type
= TREE_TYPE (decl
);
13637 if (TYPE_NEEDS_DESTRUCTOR (type
))
13639 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13642 if (TREE_CODE (decl
) != PARM_DECL
)
13643 temp
= suspend_momentary ();
13645 if (TREE_CODE (type
) == ARRAY_TYPE
)
13649 mark_addressable (decl
);
13650 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13653 /* Optimize for space over speed here. */
13654 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13655 || flag_expensive_optimizations
)
13656 flags
|= LOOKUP_NONVIRTUAL
;
13658 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13660 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13661 && ! TYPE_HAS_DESTRUCTOR (type
))
13662 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13663 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13665 if (TREE_CODE (decl
) != PARM_DECL
)
13666 resume_momentary (temp
);
13673 /* If DECL is of a type which needs a cleanup, build that cleanup
13674 here. The cleanup does free the storage with a call to delete. */
13677 maybe_build_cleanup_and_delete (decl
)
13680 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13683 /* If DECL is of a type which needs a cleanup, build that cleanup
13684 here. The cleanup does not free the storage with a call a delete. */
13687 maybe_build_cleanup (decl
)
13690 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13693 /* Expand a C++ expression at the statement level.
13694 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13695 The C++ type checker should get all of these out when
13696 expressions are combined with other, type-providing, expressions,
13697 leaving only orphan expressions, such as:
13699 &class::bar; / / takes its address, but does nothing with it. */
13702 cplus_expand_expr_stmt (exp
)
13705 if (processing_template_decl
)
13707 add_tree (build_min_nt (EXPR_STMT
, exp
));
13711 /* Arrange for all temps to disappear. */
13712 expand_start_target_temps ();
13714 if (TREE_TYPE (exp
) == unknown_type_node
)
13716 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13717 error ("address of overloaded function with no contextual type information");
13718 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13719 warning ("useless reference to a member function name, did you forget the ()?");
13723 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13725 cp_warning ("reference, not call, to function `%D'", exp
);
13726 warning ("at this point in file");
13730 /* We should do this eventually, but right now this causes regex.o from
13731 libg++ to miscompile, and tString to core dump. */
13732 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13735 /* Strip unused implicit INDIRECT_REFs of references. */
13736 if (TREE_CODE (exp
) == INDIRECT_REF
13737 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13738 exp
= TREE_OPERAND (exp
, 0);
13740 /* If we don't do this, we end up down inside expand_expr
13741 trying to do TYPE_MODE on the ERROR_MARK, and really
13742 go outside the bounds of the type. */
13743 if (exp
!= error_mark_node
)
13744 expand_expr_stmt (break_out_cleanups (exp
));
13747 /* Clean up any pending cleanups. This happens when a function call
13748 returns a cleanup-needing value that nobody uses. */
13749 expand_end_target_temps ();
13752 /* When a stmt has been parsed, this function is called.
13754 Currently, this function only does something within a
13755 constructor's scope: if a stmt has just assigned to this,
13756 and we are in a derived class, we call `emit_base_init'. */
13761 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13764 if (current_function_assigns_this
13765 || ! current_function_just_assigned_this
)
13767 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13769 /* Constructors must wait until we are out of control
13770 zones before calling base constructors. */
13771 if (cond_stack
|| loop_stack
|| case_stack
)
13773 expand_expr_stmt (base_init_expr
);
13774 check_base_init (current_class_type
);
13776 current_function_assigns_this
= 1;
13779 /* Change a static member function definition into a FUNCTION_TYPE, instead
13780 of the METHOD_TYPE that we create when it's originally parsed.
13782 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13783 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13784 other decls. Either pass the addresses of local variables or NULL. */
13787 revert_static_member_fn (decl
, fn
, argtypes
)
13788 tree
*decl
, *fn
, *argtypes
;
13791 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13792 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13794 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13795 cp_error ("static member function `%#D' declared const", *decl
);
13796 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13797 cp_error ("static member function `%#D' declared volatile", *decl
);
13799 args
= TREE_CHAIN (args
);
13800 tmp
= build_function_type (TREE_TYPE (function
), args
);
13801 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13802 TYPE_VOLATILE (function
));
13803 tmp
= build_exception_variant (tmp
,
13804 TYPE_RAISES_EXCEPTIONS (function
));
13805 TREE_TYPE (*decl
) = tmp
;
13806 if (DECL_ARGUMENTS (*decl
))
13807 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13808 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13816 id_in_current_class (id
)
13819 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13826 int warn_about_return_type
;
13828 int just_assigned_this
;
13830 int temp_name_counter
;
13832 tree shadowed_labels
;
13835 rtx last_dtor_insn
;
13836 rtx last_parm_cleanup_insn
;
13837 tree base_init_list
;
13838 tree member_init_list
;
13839 tree base_init_expr
;
13840 tree current_class_ptr
;
13841 tree current_class_ref
;
13843 struct cp_function
*next
;
13844 struct binding_level
*binding_level
;
13845 int static_labelno
;
13848 static struct cp_function
*cp_function_chain
;
13850 extern int temp_name_counter
;
13852 /* Save and reinitialize the variables
13853 used during compilation of a C++ function. */
13856 push_cp_function_context (context
)
13859 struct cp_function
*p
13860 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13862 push_function_context_to (context
);
13864 p
->next
= cp_function_chain
;
13865 cp_function_chain
= p
;
13867 p
->named_labels
= named_labels
;
13868 p
->shadowed_labels
= shadowed_labels
;
13869 p
->returns_value
= current_function_returns_value
;
13870 p
->returns_null
= current_function_returns_null
;
13871 p
->warn_about_return_type
= warn_about_return_type
;
13872 p
->binding_level
= current_binding_level
;
13873 p
->ctor_label
= ctor_label
;
13874 p
->dtor_label
= dtor_label
;
13875 p
->last_dtor_insn
= last_dtor_insn
;
13876 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13877 p
->assigns_this
= current_function_assigns_this
;
13878 p
->just_assigned_this
= current_function_just_assigned_this
;
13879 p
->parms_stored
= current_function_parms_stored
;
13880 p
->result_rtx
= original_result_rtx
;
13881 p
->base_init_expr
= base_init_expr
;
13882 p
->temp_name_counter
= temp_name_counter
;
13883 p
->base_init_list
= current_base_init_list
;
13884 p
->member_init_list
= current_member_init_list
;
13885 p
->current_class_ptr
= current_class_ptr
;
13886 p
->current_class_ref
= current_class_ref
;
13887 p
->static_labelno
= static_labelno
;
13890 /* Restore the variables used during compilation of a C++ function. */
13893 pop_cp_function_context (context
)
13896 struct cp_function
*p
= cp_function_chain
;
13899 /* Bring back all the labels that were shadowed. */
13900 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13901 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13902 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13903 TREE_VALUE (link
));
13905 pop_function_context_from (context
);
13907 cp_function_chain
= p
->next
;
13909 named_labels
= p
->named_labels
;
13910 shadowed_labels
= p
->shadowed_labels
;
13911 current_function_returns_value
= p
->returns_value
;
13912 current_function_returns_null
= p
->returns_null
;
13913 warn_about_return_type
= p
->warn_about_return_type
;
13914 current_binding_level
= p
->binding_level
;
13915 ctor_label
= p
->ctor_label
;
13916 dtor_label
= p
->dtor_label
;
13917 last_dtor_insn
= p
->last_dtor_insn
;
13918 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13919 current_function_assigns_this
= p
->assigns_this
;
13920 current_function_just_assigned_this
= p
->just_assigned_this
;
13921 current_function_parms_stored
= p
->parms_stored
;
13922 original_result_rtx
= p
->result_rtx
;
13923 base_init_expr
= p
->base_init_expr
;
13924 temp_name_counter
= p
->temp_name_counter
;
13925 current_base_init_list
= p
->base_init_list
;
13926 current_member_init_list
= p
->member_init_list
;
13927 current_class_ptr
= p
->current_class_ptr
;
13928 current_class_ref
= p
->current_class_ref
;
13929 static_labelno
= p
->static_labelno
;
13937 return function_depth
!= 0;