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);
4755 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4757 val
= binding_init (&_b
);
4758 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4759 return error_mark_node
;
4761 if (BINDING_VALUE (val
))
4763 val
= BINDING_VALUE (val
);
4765 /* If we have a single function from a using decl, pull it out. */
4766 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4767 val
= OVL_FUNCTION (val
);
4771 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4772 return error_mark_node
;
4776 make_typename_type (context
, name
)
4782 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4783 name
= TYPE_IDENTIFIER (name
);
4784 else if (TREE_CODE (name
) == TYPE_DECL
)
4785 name
= DECL_NAME (name
);
4789 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4791 name
= TREE_OPERAND (name
, 0);
4792 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4793 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4795 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4796 my_friendly_abort (2000);
4798 if (TREE_CODE (context
) == NAMESPACE_DECL
)
4800 /* We can get here from typename_sub0 in the explicit_template_type
4801 expansion. Just fail. */
4802 cp_error ("no class template named `%#T' in `%#T'",
4804 return error_mark_node
;
4807 if (! uses_template_parms (context
)
4808 || currently_open_class (context
))
4810 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4812 if (IS_AGGR_TYPE (context
))
4813 t
= lookup_field (context
, name
, 0, 0);
4817 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4818 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4820 cp_error ("no class template named `%#T' in `%#T'",
4822 return error_mark_node
;
4825 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4827 /*entering_scope=*/0);
4831 if (IS_AGGR_TYPE (context
))
4832 t
= lookup_field (context
, name
, 0, 1);
4838 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4839 return error_mark_node
;
4842 return TREE_TYPE (t
);
4846 if (processing_template_decl
)
4847 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4848 t
= make_lang_type (TYPENAME_TYPE
);
4849 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4850 d
= build_decl (TYPE_DECL
, name
, t
);
4851 if (processing_template_decl
)
4854 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4855 TYPE_NAME (TREE_TYPE (d
)) = d
;
4856 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4857 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4858 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4863 /* Select the right _DECL from multiple choices. */
4866 select_decl (binding
, flags
)
4871 val
= BINDING_VALUE (binding
);
4872 if (LOOKUP_NAMESPACES_ONLY (flags
))
4874 /* We are not interested in types. */
4875 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4880 /* If we could have a type and
4881 we have nothing or we need a type and have none. */
4882 if (BINDING_TYPE (binding
)
4883 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4884 && TREE_CODE (val
) != TYPE_DECL
)))
4885 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4886 /* Don't return non-types if we really prefer types. */
4887 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4888 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4894 /* Unscoped lookup of a global, iterate over namespaces, considering
4895 using namespace statements. */
4898 unqualified_namespace_lookup (name
, flags
)
4902 struct tree_binding _binding
;
4903 tree b
= binding_init (&_binding
);
4904 tree initial
= current_decl_namespace();
4905 tree scope
= initial
;
4907 struct binding_level
*level
;
4908 tree val
= NULL_TREE
;
4912 val
= binding_for_name (name
, scope
);
4914 /* Initialize binding for this context. */
4915 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4916 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4918 /* Add all _DECLs seen through local using-directives. */
4919 for (level
= current_binding_level
;
4920 !level
->namespace_p
;
4921 level
= level
->level_chain
)
4922 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4924 /* Give up because of error. */
4927 /* Add all _DECLs seen through global using-directives. */
4928 /* XXX local and global using lists should work equally. */
4932 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4934 /* Give up because of error. */
4936 if (siter
== scope
) break;
4937 siter
= CP_DECL_CONTEXT (siter
);
4940 val
= select_decl (b
, flags
);
4941 if (scope
== global_namespace
)
4943 scope
= CP_DECL_CONTEXT (scope
);
4948 /* Combine prefer_type and namespaces_only into flags. */
4951 lookup_flags (prefer_type
, namespaces_only
)
4952 int prefer_type
, namespaces_only
;
4954 if (namespaces_only
)
4955 return LOOKUP_PREFER_NAMESPACES
;
4956 if (prefer_type
> 1)
4957 return LOOKUP_PREFER_TYPES
;
4958 if (prefer_type
> 0)
4959 return LOOKUP_PREFER_BOTH
;
4963 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4964 ignore it or not. Subroutine of lookup_name_real. */
4967 qualify_lookup (val
, flags
)
4971 if (val
== NULL_TREE
)
4973 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
4975 if ((flags
& LOOKUP_PREFER_TYPES
)
4976 && (TREE_CODE (val
) == TYPE_DECL
4977 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
4978 && DECL_CLASS_TEMPLATE_P (val
))))
4980 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
4985 /* Look up NAME in the current binding level and its superiors in the
4986 namespace of variables, functions and typedefs. Return a ..._DECL
4987 node of some kind representing its definition if there is only one
4988 such declaration, or return a TREE_LIST with all the overloaded
4989 definitions if there are many, or return 0 if it is undefined.
4991 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4992 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4993 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4994 Otherwise we prefer non-TYPE_DECLs.
4996 If NONCLASS is non-zero, we don't look for the NAME in class scope,
4997 using IDENTIFIER_CLASS_VALUE. */
5000 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
5002 int prefer_type
, nonclass
, namespaces_only
;
5006 tree from_obj
= NULL_TREE
;
5007 tree locval
, classval
;
5010 /* Hack: copy flag set by parser, if set. */
5011 if (only_namespace_names
)
5012 namespaces_only
= 1;
5014 if (prefer_type
== -2)
5016 extern int looking_for_typename
;
5017 tree type
= NULL_TREE
;
5020 prefer_type
= looking_for_typename
;
5022 flags
= lookup_flags (prefer_type
, namespaces_only
);
5023 /* During parsing, we need to complain. */
5024 flags
|= LOOKUP_COMPLAIN
;
5025 /* If the next thing is '<', class templates are types. */
5026 if (looking_for_template
)
5027 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5029 /* std:: becomes :: for now. */
5030 if (got_scope
== std_node
)
5031 got_scope
= void_type_node
;
5035 else if (got_object
!= error_mark_node
)
5040 if (type
== error_mark_node
)
5041 return error_mark_node
;
5042 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5043 type
= TREE_TYPE (type
);
5046 type
= complete_type (type
);
5048 if (TREE_CODE (type
) == VOID_TYPE
)
5049 type
= global_namespace
;
5050 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5052 struct tree_binding b
;
5053 val
= binding_init (&b
);
5054 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5056 val
= select_decl (val
, flags
);
5058 else if (! IS_AGGR_TYPE (type
)
5059 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5060 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5061 || TREE_CODE (type
) == TYPENAME_TYPE
)
5062 /* Someone else will give an error about this if needed. */
5064 else if (TYPE_BEING_DEFINED (type
))
5066 val
= IDENTIFIER_CLASS_VALUE (name
);
5067 if (val
&& DECL_CONTEXT (val
) != type
)
5069 struct binding_level
*b
= class_binding_level
;
5070 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5072 tree t
= purpose_member (name
, b
->class_shadowed
);
5073 if (t
&& TREE_VALUE (t
)
5074 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5076 val
= TREE_VALUE (t
);
5081 if (val
== NULL_TREE
)
5082 val
= lookup_field (type
, name
, 0, 1);
5084 else if (type
== current_class_type
)
5085 val
= IDENTIFIER_CLASS_VALUE (name
);
5087 val
= lookup_member (type
, name
, 0, prefer_type
);
5094 else if (got_object
&& val
)
5098 flags
= lookup_flags (prefer_type
, namespaces_only
);
5100 locval
= classval
= NULL_TREE
;
5102 if (! namespace_bindings_p ())
5103 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5105 /* In C++ class fields are between local and global scope,
5106 just before the global scope. */
5107 if (current_class_type
&& ! nonclass
)
5109 classval
= IDENTIFIER_CLASS_VALUE (name
);
5110 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5111 /* Try to find values from base classes if we are presently
5112 defining a type. We are presently only interested in
5114 classval
= lookup_field (current_class_type
, name
, 0, 1);
5116 /* Add implicit 'typename' to types from template bases. lookup_field
5117 will do this for us. If classval is actually from an enclosing
5118 scope, lookup_nested_field will get it for us. */
5119 else if (processing_template_decl
5120 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5121 && ! currently_open_class (DECL_CONTEXT (classval
))
5122 && uses_template_parms (current_class_type
))
5123 classval
= lookup_field (current_class_type
, name
, 0, 1);
5125 /* yylex() calls this with -2, since we should never start digging for
5126 the nested name at the point where we haven't even, for example,
5127 created the COMPONENT_REF or anything like that. */
5128 if (classval
== NULL_TREE
)
5129 classval
= lookup_nested_field (name
, ! yylex
);
5131 classval
= qualify_lookup (classval
, flags
);
5134 if (locval
&& classval
)
5136 if (current_scope () == current_function_decl
5137 && ! hack_decl_function_context (current_function_decl
))
5138 /* Not in a nested function. */
5142 /* This is incredibly horrible. The whole concept of
5143 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5144 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5146 tree lctx
= hack_decl_function_context (locval
);
5147 tree cctx
= hack_decl_function_context (classval
);
5149 if (lctx
== current_scope ())
5151 else if (lctx
== cctx
)
5154 /* I don't know which is right; let's just guess for now. */
5163 val
= unqualified_namespace_lookup (name
, flags
);
5165 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5166 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5167 && TREE_TYPE (TREE_TYPE (val
)))
5169 tree nsval
= unqualified_namespace_lookup (name
, flags
);
5171 if (val
&& nsval
&& TREE_CODE (nsval
) == TYPE_DECL
)
5173 static int explained
;
5174 cp_warning ("namespace-scope type `%#D'", nsval
);
5176 (" is used instead of `%D' from dependent base class", val
);
5180 cp_warning (" (use `typename %D' if that's what you meant)",
5190 /* This should only warn about types used in qualified-ids. */
5191 if (from_obj
&& from_obj
!= val
)
5193 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5194 && TREE_CODE (val
) == TYPE_DECL
5195 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5197 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5198 name
, got_object
, TREE_TYPE (from_obj
));
5199 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5203 /* We don't change val to from_obj if got_object depends on
5204 template parms because that breaks implicit typename for
5205 destructor calls. */
5206 if (! uses_template_parms (got_object
))
5210 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5211 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5213 /* Caller wants a class-or-namespace-name. */
5214 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5216 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5217 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5218 else if (TREE_TYPE (val
) == error_mark_node
)
5219 val
= error_mark_node
;
5221 /* If we have a single function from a using decl, pull it out. */
5222 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5223 val
= OVL_FUNCTION (val
);
5232 lookup_name_nonclass (name
)
5235 return lookup_name_real (name
, 0, 1, 0);
5239 lookup_function_nonclass (name
, args
)
5243 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5247 lookup_name_namespace_only (name
)
5250 /* type-or-namespace, nonclass, namespace_only */
5251 return lookup_name_real (name
, 1, 1, 1);
5255 lookup_name (name
, prefer_type
)
5259 return lookup_name_real (name
, prefer_type
, 0, 0);
5262 /* Similar to `lookup_name' but look only at current binding level. */
5265 lookup_name_current_level (name
)
5268 register tree t
= NULL_TREE
;
5270 if (current_binding_level
->namespace_p
)
5272 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5274 /* extern "C" function() */
5275 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5278 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5280 struct binding_level
*b
= current_binding_level
;
5283 if (purpose_member (name
, b
->shadowed
))
5284 return IDENTIFIER_LOCAL_VALUE (name
);
5295 /* Like lookup_name_current_level, but for types. */
5298 lookup_type_current_level (name
)
5301 register tree t
= NULL_TREE
;
5303 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5305 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5306 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5308 struct binding_level
*b
= current_binding_level
;
5311 if (purpose_member (name
, b
->type_shadowed
))
5312 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5324 begin_only_namespace_names ()
5326 only_namespace_names
= 1;
5330 end_only_namespace_names ()
5332 only_namespace_names
= 0;
5335 /* Arrange for the user to get a source line number, even when the
5336 compiler is going down in flames, so that she at least has a
5337 chance of working around problems in the compiler. We used to
5338 call error(), but that let the segmentation fault continue
5339 through; now, it's much more passive by asking them to send the
5340 maintainers mail about the problem. */
5344 int sig ATTRIBUTE_UNUSED
;
5346 signal (SIGSEGV
, SIG_DFL
);
5348 signal (SIGIOT
, SIG_DFL
);
5351 signal (SIGILL
, SIG_DFL
);
5354 signal (SIGABRT
, SIG_DFL
);
5357 signal (SIGBUS
, SIG_DFL
);
5359 my_friendly_abort (0);
5363 /* Unused -- brendan 970107 */
5364 /* Array for holding types considered "built-in". These types
5365 are output in the module in which `main' is defined. */
5366 static tree
*builtin_type_tdescs_arr
;
5367 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5370 /* Push the declarations of builtin types into the namespace.
5371 RID_INDEX, if < RID_MAX is the index of the builtin type
5372 in the array RID_POINTERS. NAME is the name used when looking
5373 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5376 record_builtin_type (rid_index
, name
, type
)
5381 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5382 tree tdecl
= NULL_TREE
;
5384 if ((int) rid_index
< (int) RID_MAX
)
5385 rname
= ridpointers
[(int) rid_index
];
5387 tname
= get_identifier (name
);
5389 TYPE_BUILT_IN (type
) = 1;
5393 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5394 set_identifier_type_value (tname
, NULL_TREE
);
5395 if ((int) rid_index
< (int) RID_MAX
)
5396 /* Built-in types live in the global namespace. */
5397 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5399 if (rname
!= NULL_TREE
)
5401 if (tname
!= NULL_TREE
)
5403 set_identifier_type_value (rname
, NULL_TREE
);
5404 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5408 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5409 set_identifier_type_value (rname
, NULL_TREE
);
5414 /* Record one of the standard Java types.
5415 * Declare it as having the given NAME.
5416 * If SIZE > 0, it is the size of one of the integral types;
5417 * otherwise it is the negative of the size of one of the other types. */
5420 record_builtin_java_type (name
, size
)
5426 type
= make_signed_type (size
);
5427 else if (size
> -32)
5428 { /* "__java_char" or ""__java_boolean". */
5429 type
= make_unsigned_type (-size
);
5430 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5433 { /* "__java_float" or ""__java_double". */
5434 type
= make_node (REAL_TYPE
);
5435 TYPE_PRECISION (type
) = - size
;
5438 record_builtin_type (RID_MAX
, name
, type
);
5439 decl
= TYPE_NAME (type
);
5440 DECL_IGNORED_P (decl
) = 1;
5441 TYPE_FOR_JAVA (type
) = 1;
5445 /* Push a type into the namespace so that the back-ends ignore it. */
5448 record_unknown_type (type
, name
)
5452 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5453 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5454 DECL_IGNORED_P (decl
) = 1;
5455 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5456 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5457 TYPE_ALIGN (type
) = 1;
5458 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5461 /* Push overloaded decl, in global scope, with one argument so it
5462 can be used as a callback from define_function. */
5465 push_overloaded_decl_1 (x
)
5468 push_overloaded_decl (x
, 0);
5475 auto_function (name
, type
, code
)
5477 enum built_in_function code
;
5479 return define_function
5480 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5481 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5485 /* Create the predefined scalar types of C,
5486 and some nodes representing standard constants (0, 1, (void *)0).
5487 Initialize the global binding level.
5488 Make definitions for built-in primitive functions. */
5491 init_decl_processing ()
5493 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5495 /* Data type of memcpy. */
5496 tree memcpy_ftype
, strlen_ftype
;
5497 int wchar_type_size
;
5499 tree array_domain_type
;
5500 tree vb_off_identifier
= NULL_TREE
;
5501 /* Function type `char *(char *, char *)' and similar ones */
5502 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5503 tree sizetype_endlink
;
5504 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5505 tree void_ftype
, void_ftype_int
, void_ftype_ptr
, ptr_ftype_void
;
5507 /* Have to make these distinct before we try using them. */
5508 lang_name_cplusplus
= get_identifier ("C++");
5509 lang_name_c
= get_identifier ("C");
5510 lang_name_java
= get_identifier ("Java");
5512 /* Enter the global namespace. */
5513 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5514 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5515 current_lang_name
= lang_name_cplusplus
;
5516 push_namespace (get_identifier ("::"));
5517 global_namespace
= current_namespace
;
5518 current_lang_name
= NULL_TREE
;
5520 if (flag_strict_prototype
== 2)
5521 flag_strict_prototype
= pedantic
;
5523 strict_prototypes_lang_c
= flag_strict_prototype
;
5526 current_lang_name
= lang_name_c
;
5528 current_function_decl
= NULL_TREE
;
5529 named_labels
= NULL_TREE
;
5530 named_label_uses
= NULL
;
5531 current_binding_level
= NULL_BINDING_LEVEL
;
5532 free_binding_level
= NULL_BINDING_LEVEL
;
5534 #ifndef __CYGWIN32__
5535 /* Because most segmentation signals can be traced back into user
5536 code, catch them and at least give the user a chance of working
5537 around compiler bugs. */
5538 signal (SIGSEGV
, signal_catch
);
5540 /* We will also catch aborts in the back-end through signal_catch and
5541 give the user a chance to see where the error might be, and to defeat
5542 aborts in the back-end when there have been errors previously in their
5545 signal (SIGIOT
, signal_catch
);
5548 signal (SIGILL
, signal_catch
);
5551 signal (SIGABRT
, signal_catch
);
5554 signal (SIGBUS
, signal_catch
);
5556 #else /* ndef __CYGWIN32__ */
5557 /* Cygwin32 cannot handle catching signals other than
5558 SIGABRT yet. We hope this will cease to be the case soon. */
5560 signal (SIGABRT
, signal_catch
);
5562 #endif /* ndef __CYGWIN32__ */
5564 gcc_obstack_init (&decl_obstack
);
5566 /* Must lay these out before anything else gets laid out. */
5567 error_mark_node
= make_node (ERROR_MARK
);
5568 TREE_PERMANENT (error_mark_node
) = 1;
5569 TREE_TYPE (error_mark_node
) = error_mark_node
;
5570 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5571 TREE_TYPE (error_mark_list
) = error_mark_node
;
5573 /* Make the binding_level structure for global names. */
5575 global_binding_level
= current_binding_level
;
5576 /* The global level is the namespace level of ::. */
5577 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5578 declare_namespace_level ();
5580 this_identifier
= get_identifier (THIS_NAME
);
5581 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5582 ctor_identifier
= get_identifier (CTOR_NAME
);
5583 dtor_identifier
= get_identifier (DTOR_NAME
);
5584 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5585 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5586 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5587 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5588 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5589 if (flag_handle_signatures
)
5591 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5592 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5593 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5596 /* Define `int' and `char' first so that dbx will output them first. */
5598 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5599 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5601 /* Define `char', which is like either `signed char' or `unsigned char'
5602 but not the same as either. */
5606 ? make_signed_type (CHAR_TYPE_SIZE
)
5607 : make_unsigned_type (CHAR_TYPE_SIZE
));
5608 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5610 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5611 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5613 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5614 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5616 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5617 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5618 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5620 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5621 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5623 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5624 record_builtin_type (RID_MAX
, "long long unsigned int",
5625 long_long_unsigned_type_node
);
5626 record_builtin_type (RID_MAX
, "long long unsigned",
5627 long_long_unsigned_type_node
);
5629 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5630 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5631 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5632 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5633 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5635 /* `unsigned long' is the standard type for sizeof.
5636 Note that stddef.h uses `unsigned long',
5637 and this must agree, even if long and int are the same size. */
5639 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5642 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5644 /* Define both `signed char' and `unsigned char'. */
5645 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5646 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5647 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5648 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5650 /* These are types that type_for_size and type_for_mode use. */
5651 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5652 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5653 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5654 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5655 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5656 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5657 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5658 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5659 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5660 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5661 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5662 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5663 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5664 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5665 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5666 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5667 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5668 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5669 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5670 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5672 float_type_node
= make_node (REAL_TYPE
);
5673 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5674 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5675 layout_type (float_type_node
);
5677 double_type_node
= make_node (REAL_TYPE
);
5678 if (flag_short_double
)
5679 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5681 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5682 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5683 layout_type (double_type_node
);
5685 long_double_type_node
= make_node (REAL_TYPE
);
5686 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5687 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5688 layout_type (long_double_type_node
);
5690 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5691 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5692 complex_integer_type_node
));
5693 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5694 layout_type (complex_integer_type_node
);
5696 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5697 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5698 complex_float_type_node
));
5699 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5700 layout_type (complex_float_type_node
);
5702 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5703 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5704 complex_double_type_node
));
5705 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5706 layout_type (complex_double_type_node
);
5708 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5709 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5710 complex_long_double_type_node
));
5711 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5712 layout_type (complex_long_double_type_node
);
5714 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5715 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5716 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5717 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5718 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5719 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5720 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5721 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5723 integer_zero_node
= build_int_2 (0, 0);
5724 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5725 integer_one_node
= build_int_2 (1, 0);
5726 TREE_TYPE (integer_one_node
) = integer_type_node
;
5727 integer_two_node
= build_int_2 (2, 0);
5728 TREE_TYPE (integer_two_node
) = integer_type_node
;
5729 integer_three_node
= build_int_2 (3, 0);
5730 TREE_TYPE (integer_three_node
) = integer_type_node
;
5732 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5733 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5734 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5735 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5736 TYPE_PRECISION (boolean_type_node
) = 1;
5737 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5738 boolean_false_node
= build_int_2 (0, 0);
5739 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5740 boolean_true_node
= build_int_2 (1, 0);
5741 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5743 /* These are needed by stor-layout.c. */
5744 size_zero_node
= size_int (0);
5745 size_one_node
= size_int (1);
5747 signed_size_zero_node
= build_int_2 (0, 0);
5748 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5750 void_type_node
= make_node (VOID_TYPE
);
5751 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5752 layout_type (void_type_node
); /* Uses integer_zero_node. */
5753 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5754 TREE_PARMLIST (void_list_node
) = 1;
5756 null_pointer_node
= build_int_2 (0, 0);
5757 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5758 layout_type (TREE_TYPE (null_pointer_node
));
5760 /* Used for expressions that do nothing, but are not errors. */
5761 void_zero_node
= build_int_2 (0, 0);
5762 TREE_TYPE (void_zero_node
) = void_type_node
;
5764 string_type_node
= build_pointer_type (char_type_node
);
5765 const_string_type_node
5766 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5768 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5771 /* Make a type to be the domain of a few array types
5772 whose domains don't really matter.
5773 200 is small enough that it always fits in size_t
5774 and large enough that it can hold most function names for the
5775 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5776 array_domain_type
= build_index_type (build_int_2 (200, 0));
5778 /* Make a type for arrays of characters.
5779 With luck nothing will ever really depend on the length of this
5781 char_array_type_node
5782 = build_array_type (char_type_node
, array_domain_type
);
5783 /* Likewise for arrays of ints. */
5785 = build_array_type (integer_type_node
, array_domain_type
);
5787 /* This is just some anonymous class type. Nobody should ever
5788 need to look inside this envelope. */
5789 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5791 default_function_type
5792 = build_function_type (integer_type_node
, NULL_TREE
);
5794 ptr_type_node
= build_pointer_type (void_type_node
);
5796 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5798 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5800 endlink
= void_list_node
;
5801 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5802 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5803 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5805 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5806 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5807 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5808 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5809 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5811 void_ftype
= build_function_type (void_type_node
, endlink
);
5812 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5814 = build_function_type (void_type_node
,
5815 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5817 = build_exception_variant (void_ftype_ptr
,
5818 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5821 = build_function_type (float_type_node
,
5822 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5825 = build_function_type (double_type_node
, double_endlink
);
5827 ldouble_ftype_ldouble
5828 = build_function_type (long_double_type_node
,
5829 tree_cons (NULL_TREE
, long_double_type_node
,
5832 double_ftype_double_double
5833 = build_function_type (double_type_node
,
5834 tree_cons (NULL_TREE
, double_type_node
,
5838 = build_function_type (integer_type_node
, int_endlink
);
5841 = build_function_type (long_integer_type_node
,
5842 tree_cons (NULL_TREE
, long_integer_type_node
,
5845 int_ftype_cptr_cptr_sizet
5846 = build_function_type (integer_type_node
,
5847 tree_cons (NULL_TREE
, const_ptr_type_node
,
5848 tree_cons (NULL_TREE
, const_ptr_type_node
,
5849 tree_cons (NULL_TREE
,
5853 string_ftype_ptr_ptr
/* strcpy prototype */
5854 = build_function_type (string_type_node
,
5855 tree_cons (NULL_TREE
, string_type_node
,
5856 tree_cons (NULL_TREE
,
5857 const_string_type_node
,
5860 int_ftype_string_string
/* strcmp prototype */
5861 = build_function_type (integer_type_node
,
5862 tree_cons (NULL_TREE
, const_string_type_node
,
5863 tree_cons (NULL_TREE
,
5864 const_string_type_node
,
5867 strlen_ftype
/* strlen prototype */
5868 = build_function_type (sizetype
,
5869 tree_cons (NULL_TREE
, const_string_type_node
,
5872 memcpy_ftype
/* memcpy prototype */
5873 = build_function_type (ptr_type_node
,
5874 tree_cons (NULL_TREE
, ptr_type_node
,
5875 tree_cons (NULL_TREE
, const_ptr_type_node
,
5876 sizetype_endlink
)));
5878 if (flag_huge_objects
)
5879 delta_type_node
= long_integer_type_node
;
5881 delta_type_node
= short_integer_type_node
;
5883 builtin_function ("__builtin_constant_p", default_function_type
,
5884 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5886 builtin_return_address_fndecl
5887 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5888 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5890 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5891 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5893 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5894 BUILT_IN_ALLOCA
, "alloca");
5895 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5896 /* Define alloca, ffs as builtins.
5897 Declare _exit just to mark it as volatile. */
5898 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5900 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5901 BUILT_IN_ALLOCA
, NULL_PTR
);
5902 /* Suppress error if redefined as a non-function. */
5903 DECL_BUILT_IN_NONANSI (temp
) = 1;
5904 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5905 /* Suppress error if redefined as a non-function. */
5906 DECL_BUILT_IN_NONANSI (temp
) = 1;
5907 temp
= builtin_function ("_exit", void_ftype_int
,
5908 NOT_BUILT_IN
, NULL_PTR
);
5909 TREE_THIS_VOLATILE (temp
) = 1;
5910 TREE_SIDE_EFFECTS (temp
) = 1;
5911 /* Suppress error if redefined as a non-function. */
5912 DECL_BUILT_IN_NONANSI (temp
) = 1;
5915 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5916 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5918 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5920 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5922 builtin_function ("__builtin_labs", long_ftype_long
,
5923 BUILT_IN_LABS
, NULL_PTR
);
5924 builtin_function ("__builtin_saveregs", ptr_ftype
,
5925 BUILT_IN_SAVEREGS
, NULL_PTR
);
5926 builtin_function ("__builtin_classify_type", default_function_type
,
5927 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5928 builtin_function ("__builtin_next_arg", ptr_ftype
,
5929 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5930 builtin_function ("__builtin_args_info", int_ftype_int
,
5931 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5932 builtin_function ("__builtin_setjmp",
5933 build_function_type (integer_type_node
,
5934 tree_cons (NULL_TREE
, ptr_type_node
,
5936 BUILT_IN_SETJMP
, NULL_PTR
);
5937 builtin_function ("__builtin_longjmp",
5938 build_function_type (integer_type_node
,
5939 tree_cons (NULL_TREE
, ptr_type_node
,
5940 tree_cons (NULL_TREE
,
5943 BUILT_IN_LONGJMP
, NULL_PTR
);
5945 /* Untyped call and return. */
5946 builtin_function ("__builtin_apply_args", ptr_ftype
,
5947 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5949 temp
= tree_cons (NULL_TREE
,
5950 build_pointer_type (build_function_type (void_type_node
,
5952 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
5953 builtin_function ("__builtin_apply",
5954 build_function_type (ptr_type_node
, temp
),
5955 BUILT_IN_APPLY
, NULL_PTR
);
5956 builtin_function ("__builtin_return", void_ftype_ptr
,
5957 BUILT_IN_RETURN
, NULL_PTR
);
5959 /* Currently under experimentation. */
5960 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5961 BUILT_IN_MEMCPY
, "memcpy");
5962 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5963 BUILT_IN_MEMCMP
, "memcmp");
5964 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5965 BUILT_IN_STRCMP
, "strcmp");
5966 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5967 BUILT_IN_STRCPY
, "strcpy");
5968 builtin_function ("__builtin_strlen", strlen_ftype
,
5969 BUILT_IN_STRLEN
, "strlen");
5970 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5971 BUILT_IN_FSQRT
, "sqrtf");
5972 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5973 BUILT_IN_FSQRT
, NULL_PTR
);
5974 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
5975 BUILT_IN_FSQRT
, "sqrtl");
5976 builtin_function ("__builtin_sinf", float_ftype_float
,
5977 BUILT_IN_SIN
, "sinf");
5978 builtin_function ("__builtin_sin", double_ftype_double
,
5979 BUILT_IN_SIN
, "sin");
5980 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
5981 BUILT_IN_SIN
, "sinl");
5982 builtin_function ("__builtin_cosf", float_ftype_float
,
5983 BUILT_IN_COS
, "cosf");
5984 builtin_function ("__builtin_cos", double_ftype_double
,
5985 BUILT_IN_COS
, "cos");
5986 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
5987 BUILT_IN_COS
, "cosl");
5989 if (!flag_no_builtin
)
5991 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5992 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5993 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5994 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
5995 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5997 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
5998 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
6000 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
6002 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
6004 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
6005 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
6006 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
6007 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
6009 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
6010 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
6011 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
6012 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
6013 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
6014 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
6016 /* Declare these functions volatile
6017 to avoid spurious "control drops through" warnings. */
6018 temp
= builtin_function ("abort", void_ftype
,
6019 NOT_BUILT_IN
, NULL_PTR
);
6020 TREE_THIS_VOLATILE (temp
) = 1;
6021 TREE_SIDE_EFFECTS (temp
) = 1;
6022 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6024 DECL_BUILT_IN_NONANSI (temp
) = 1;
6025 temp
= builtin_function ("exit", void_ftype_int
,
6026 NOT_BUILT_IN
, NULL_PTR
);
6027 TREE_THIS_VOLATILE (temp
) = 1;
6028 TREE_SIDE_EFFECTS (temp
) = 1;
6029 DECL_BUILT_IN_NONANSI (temp
) = 1;
6033 /* Support for these has not been written in either expand_builtin
6034 or build_function_call. */
6035 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6036 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6037 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6039 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6041 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6042 BUILT_IN_FMOD
, NULL_PTR
);
6043 builtin_function ("__builtin_frem", double_ftype_double_double
,
6044 BUILT_IN_FREM
, NULL_PTR
);
6045 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6046 BUILT_IN_MEMSET
, NULL_PTR
);
6047 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6049 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6053 /* C++ extensions */
6055 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6056 record_unknown_type (unknown_type_node
, "unknown type");
6058 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6059 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6061 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6063 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6065 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6066 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6068 /* This is for handling opaque types in signatures. */
6069 opaque_type_node
= copy_node (ptr_type_node
);
6070 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6071 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6073 /* This is special for C++ so functions can be overloaded. */
6075 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6076 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6077 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6078 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6080 = TREE_UNSIGNED (wchar_type_node
)
6081 ? unsigned_wchar_type_node
6082 : signed_wchar_type_node
;
6083 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6085 /* Artificial declaration of wchar_t -- can be bashed */
6086 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6088 pushdecl (wchar_decl_node
);
6090 /* This is for wide string constants. */
6091 wchar_array_type_node
6092 = build_array_type (wchar_type_node
, array_domain_type
);
6094 if (flag_vtable_thunks
)
6096 /* Make sure we get a unique function type, so we can give
6097 its pointer type a name. (This wins for gdb.) */
6098 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6099 TREE_TYPE (vfunc_type
) = integer_type_node
;
6100 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6101 layout_type (vfunc_type
);
6103 vtable_entry_type
= build_pointer_type (vfunc_type
);
6107 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6108 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6110 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6112 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6114 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6117 /* Make this part of an invisible union. */
6118 fields
[3] = copy_node (fields
[2]);
6119 TREE_TYPE (fields
[3]) = delta_type_node
;
6120 DECL_NAME (fields
[3]) = delta2_identifier
;
6121 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6122 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6123 TREE_UNSIGNED (fields
[3]) = 0;
6124 TREE_CHAIN (fields
[2]) = fields
[3];
6125 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6127 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6130 = build_array_type (vtable_entry_type
, NULL_TREE
);
6131 layout_type (vtbl_type_node
);
6132 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6133 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6135 /* Simplify life by making a "sigtable_entry_type". Give its
6136 fields names so that the debugger can use them. */
6138 if (flag_handle_signatures
)
6140 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6141 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6143 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6145 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6147 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6149 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6152 /* Set the alignment to the max of the alignment of ptr_type_node and
6153 delta_type_node. Double alignment wastes a word on the Sparc. */
6154 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6155 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6159 /* Make this part of an invisible union. */
6160 fields
[5] = copy_node (fields
[4]);
6161 TREE_TYPE (fields
[5]) = delta_type_node
;
6162 DECL_NAME (fields
[5]) = vt_off_identifier
;
6163 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6164 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6165 TREE_UNSIGNED (fields
[5]) = 0;
6166 TREE_CHAIN (fields
[4]) = fields
[5];
6168 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6169 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6172 std_node
= build_decl (NAMESPACE_DECL
,
6173 get_identifier (flag_honor_std
? "fake std":"std"),
6175 pushdecl (std_node
);
6177 global_type_node
= make_node (LANG_TYPE
);
6178 record_unknown_type (global_type_node
, "global type");
6181 current_lang_name
= lang_name_cplusplus
;
6184 tree bad_alloc_type_node
, newtype
, deltype
;
6186 push_namespace (get_identifier ("std"));
6187 bad_alloc_type_node
= xref_tag
6188 (class_type_node
, get_identifier ("bad_alloc"), 1);
6191 newtype
= build_exception_variant
6192 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6193 deltype
= build_exception_variant
6194 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6195 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6196 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6197 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6198 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6202 = define_function ("__pure_virtual", void_ftype
,
6203 NOT_BUILT_IN
, 0, 0);
6205 /* Perform other language dependent initializations. */
6206 init_class_processing ();
6207 init_init_processing ();
6208 init_search_processing ();
6210 init_rtti_processing ();
6212 if (flag_exceptions
)
6213 init_exception_processing ();
6216 flag_inline_functions
= 0;
6219 if (! supports_one_only ())
6222 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6223 declare_function_name ();
6225 /* Prepare to check format strings against argument lists. */
6226 init_function_format_info ();
6228 /* Show we use EH for cleanups. */
6229 using_eh_for_cleanups ();
6231 print_error_function
= lang_print_error_function
;
6232 lang_get_alias_set
= &c_get_alias_set
;
6234 /* Maintain consistency. Perhaps we should just complain if they
6235 say -fwritable-strings? */
6236 if (flag_writable_strings
)
6237 flag_const_strings
= 0;
6240 /* Function to print any language-specific context for an error message. */
6243 lang_print_error_function (file
)
6246 default_print_error_function (file
);
6247 maybe_print_template_context ();
6250 /* Make a definition for a builtin function named NAME and whose data type
6251 is TYPE. TYPE should be a function type with argument types.
6252 FUNCTION_CODE tells later passes how to compile calls to this function.
6253 See tree.h for its possible values.
6255 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6256 the name to be called if we can't opencode the function. */
6259 define_function (name
, type
, function_code
, pfn
, library_name
)
6262 enum built_in_function function_code
;
6263 void (*pfn
) PROTO((tree
));
6266 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6267 DECL_EXTERNAL (decl
) = 1;
6268 TREE_PUBLIC (decl
) = 1;
6269 DECL_ARTIFICIAL (decl
) = 1;
6271 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6272 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6274 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6275 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6276 function in the namespace. */
6277 if (pfn
) (*pfn
) (decl
);
6279 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6280 make_function_rtl (decl
);
6281 if (function_code
!= NOT_BUILT_IN
)
6283 DECL_BUILT_IN (decl
) = 1;
6284 DECL_FUNCTION_CODE (decl
) = function_code
;
6289 /* Called when a declaration is seen that contains no names to declare.
6290 If its type is a reference to a structure, union or enum inherited
6291 from a containing scope, shadow that tag name for the current scope
6292 with a forward reference.
6293 If its type defines a new named structure or union
6294 or defines an enum, it is valid but we need not do anything here.
6295 Otherwise, it is an error.
6297 C++: may have to grok the declspecs to learn about static,
6298 complain for anonymous unions. */
6301 shadow_tag (declspecs
)
6305 tree ob_modifier
= NULL_TREE
;
6307 register enum tree_code code
, ok_code
= ERROR_MARK
;
6308 register tree t
= NULL_TREE
;
6310 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6312 register tree value
= TREE_VALUE (link
);
6314 code
= TREE_CODE (value
);
6315 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6317 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6319 maybe_process_partial_specialization (value
);
6325 else if (value
== ridpointers
[(int) RID_STATIC
]
6326 || value
== ridpointers
[(int) RID_EXTERN
]
6327 || value
== ridpointers
[(int) RID_AUTO
]
6328 || value
== ridpointers
[(int) RID_REGISTER
]
6329 || value
== ridpointers
[(int) RID_INLINE
]
6330 || value
== ridpointers
[(int) RID_VIRTUAL
]
6331 || value
== ridpointers
[(int) RID_EXPLICIT
])
6332 ob_modifier
= value
;
6335 /* This is where the variables in an anonymous union are
6336 declared. An anonymous union declaration looks like:
6338 because there is no declarator after the union, the parser
6339 sends that declaration here. */
6340 if (ok_code
== UNION_TYPE
6342 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6343 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6344 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6345 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6347 /* See also grok_x_components. */
6350 /* Wipe out memory of synthesized methods */
6351 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6352 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6353 TYPE_HAS_INIT_REF (t
) = 0;
6354 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6355 TYPE_HAS_ASSIGN_REF (t
) = 0;
6356 TYPE_HAS_ASSIGNMENT (t
) = 0;
6357 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6359 q
= &TYPE_METHODS (t
);
6362 if (DECL_ARTIFICIAL (*q
))
6363 *q
= TREE_CHAIN (*q
);
6365 q
= &TREE_CHAIN (*q
);
6368 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6369 function members. */
6370 if (TYPE_METHODS (t
))
6371 error ("an anonymous union cannot have function members");
6373 if (TYPE_FIELDS (t
))
6375 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6377 finish_anon_union (decl
);
6382 /* Anonymous unions are objects, that's why we only check for
6383 inappropriate specifiers in this branch. */
6387 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6388 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6389 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6390 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6391 cp_error ("`%D' can only be specified for constructors",
6394 cp_error ("`%D' can only be specified for objects and functions",
6399 cp_error ("abstract declarator used as declaration");
6400 else if (found_tag
> 1)
6401 pedwarn ("multiple types in one declaration");
6405 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6408 groktypename (typename
)
6411 if (TREE_CODE (typename
) != TREE_LIST
)
6413 return grokdeclarator (TREE_VALUE (typename
),
6414 TREE_PURPOSE (typename
),
6415 TYPENAME
, 0, NULL_TREE
);
6418 /* Decode a declarator in an ordinary declaration or data definition.
6419 This is called as soon as the type information and variable name
6420 have been parsed, before parsing the initializer if any.
6421 Here we create the ..._DECL node, fill in its type,
6422 and put it on the list of decls for the current context.
6423 The ..._DECL node is returned as the value.
6425 Exception: for arrays where the length is not specified,
6426 the type is left null, to be filled in by `cp_finish_decl'.
6428 Function definitions do not come here; they go to start_function
6429 instead. However, external and forward declarations of functions
6430 do go through here. Structure field declarations are done by
6431 grokfield and not through here. */
6433 /* Set this to zero to debug not using the temporary obstack
6434 to parse initializers. */
6435 int debug_temp_inits
= 1;
6438 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6439 tree declarator
, declspecs
;
6441 tree attributes
, prefix_attributes
;
6444 register tree type
, tem
;
6446 extern int have_extern_spec
;
6447 extern int used_extern_spec
;
6450 /* See code below that used this. */
6451 int init_written
= initialized
;
6454 /* This should only be done once on the top most decl. */
6455 if (have_extern_spec
&& !used_extern_spec
)
6457 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6459 used_extern_spec
= 1;
6462 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6464 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6467 type
= TREE_TYPE (decl
);
6469 /* Don't lose if destructors must be executed at file-level. */
6470 if (! processing_template_decl
&& TREE_STATIC (decl
)
6471 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6472 && !TREE_PERMANENT (decl
))
6474 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6475 decl
= copy_node (decl
);
6476 if (TREE_CODE (type
) == ARRAY_TYPE
)
6478 tree itype
= TYPE_DOMAIN (type
);
6479 if (itype
&& ! TREE_PERMANENT (itype
))
6481 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6482 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6483 TREE_TYPE (decl
) = type
;
6490 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6491 ? DECL_CLASS_CONTEXT (decl
)
6492 : DECL_CONTEXT (decl
);
6494 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6495 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6497 /* When parsing the initializer, lookup should use the object's
6499 push_decl_namespace (context
);
6502 /* We are only interested in class contexts, later. */
6503 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6504 context
= NULL_TREE
;
6507 /* Is it valid for this decl to have an initializer at all?
6508 If not, set INITIALIZED to zero, which will indirectly
6509 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6510 switch (TREE_CODE (decl
))
6513 /* typedef foo = bar means give foo the same type as bar.
6514 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6515 Any other case of an initialization in a TYPE_DECL is an error. */
6516 if (pedantic
|| list_length (declspecs
) > 1)
6518 cp_error ("typedef `%D' is initialized", decl
);
6524 cp_error ("function `%#D' is initialized like a variable", decl
);
6529 if (! processing_template_decl
)
6531 if (type
!= error_mark_node
)
6533 if (TYPE_SIZE (type
) != NULL_TREE
6534 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6537 ("variable-sized object `%D' may not be initialized",
6542 if (TREE_CODE (type
) == ARRAY_TYPE
6543 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6546 ("elements of array `%#D' have incomplete type", decl
);
6555 if (! toplevel_bindings_p ()
6556 && DECL_EXTERNAL (decl
))
6557 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6559 DECL_EXTERNAL (decl
) = 0;
6560 if (toplevel_bindings_p ())
6561 TREE_STATIC (decl
) = 1;
6563 /* Tell `pushdecl' this is an initialized decl
6564 even though we don't yet have the initializer expression.
6565 Also tell `cp_finish_decl' it may store the real initializer. */
6566 DECL_INITIAL (decl
) = error_mark_node
;
6569 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6571 if (TREE_CODE (decl
) == VAR_DECL
)
6573 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6574 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6575 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6578 if (DECL_CONTEXT (field
) != context
)
6580 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6581 DECL_CONTEXT (field
), DECL_NAME (decl
),
6582 context
, DECL_NAME (decl
));
6583 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6585 /* Static data member are tricky; an in-class initialization
6586 still doesn't provide a definition, so the in-class
6587 declaration will have DECL_EXTERNAL set, but will have an
6588 initialization. Thus, duplicate_decls won't warn
6589 about this situation, and so we check here. */
6590 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6591 cp_error ("duplicate initialization of %D", decl
);
6592 if (duplicate_decls (decl
, field
))
6598 tree field
= check_classfn (context
, decl
);
6599 if (field
&& duplicate_decls (decl
, field
))
6603 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6604 DECL_IN_AGGR_P (decl
) = 0;
6605 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6606 || CLASSTYPE_USE_TEMPLATE (context
))
6607 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6609 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6610 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6613 pushclass (context
, 2);
6616 /* Set attributes here so if duplicate decl, will have proper attributes. */
6617 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6619 /* Add this decl to the current binding level, but not if it
6620 comes from another scope, e.g. a static member variable.
6621 TEM may equal DECL or it may be a previous decl of the same name. */
6623 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6624 /* Definitions of namespace members outside their namespace are
6626 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6627 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6628 || TREE_CODE (type
) == LANG_TYPE
6629 /* The declaration of template specializations does not affect
6630 the functions available for overload resolution, so we do not
6632 || (TREE_CODE (decl
) == FUNCTION_DECL
6633 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6636 tem
= pushdecl (decl
);
6638 if (processing_template_decl
)
6640 if (! current_function_decl
)
6641 tem
= push_template_decl (tem
);
6642 else if (minimal_parse_mode
)
6644 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6645 copy_to_permanent (declspecs
),
6650 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6651 /* Tell the back-end to use or not use .common as appropriate. If we say
6652 -fconserve-space, we want this to save .data space, at the expense of
6653 wrong semantics. If we say -fno-conserve-space, we want this to
6654 produce errors about redefs; to do this we force variables into the
6656 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6659 if (! processing_template_decl
)
6662 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6663 push_obstacks_nochange ();
6666 /* We have no way of knowing whether the initializer will need to be
6667 evaluated at run-time or not until we've parsed it, so let's just put
6668 it in the permanent obstack. (jason) */
6670 && ! (TREE_CODE (tem
) == PARM_DECL
6671 || (TREE_READONLY (tem
)
6672 && (TREE_CODE (tem
) == VAR_DECL
6673 || TREE_CODE (tem
) == FIELD_DECL
))))
6675 /* When parsing and digesting the initializer,
6676 use temporary storage. Do this even if we will ignore the value. */
6677 if (toplevel_bindings_p () && debug_temp_inits
)
6679 if (processing_template_decl
6680 || TYPE_NEEDS_CONSTRUCTING (type
)
6681 || TREE_CODE (type
) == REFERENCE_TYPE
)
6682 /* In this case, the initializer must lay down in permanent
6683 storage, since it will be saved until `finish_file' is run. */
6686 temporary_allocation ();
6698 tree type
= TREE_TYPE (decl
);
6699 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6701 /* If this type of object needs a cleanup, and control may
6702 jump past it, make a new binding level so that it is cleaned
6703 up only when it is initialized first. */
6704 if (TYPE_NEEDS_DESTRUCTOR (type
)
6705 && current_binding_level
->more_cleanups_ok
== 0)
6706 pushlevel_temporary (1);
6709 /* Is it valid for this decl to have an initializer at all?
6710 If not, set INITIALIZED to zero, which will indirectly
6711 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6713 /* Don't allow initializations for incomplete types except for
6714 arrays which might be completed by the initialization. */
6715 if (type
== error_mark_node
)
6716 ; /* Don't complain again. */
6717 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6718 ; /* A complete type is ok. */
6719 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6721 cp_error ("variable `%#D' has initializer but incomplete type",
6724 type
= TREE_TYPE (decl
) = error_mark_node
;
6726 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6728 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6729 cp_error ("elements of array `%#D' have incomplete type", decl
);
6730 /* else we already gave an error in start_decl. */
6736 && TREE_CODE (decl
) != TYPE_DECL
6737 && TREE_CODE (decl
) != TEMPLATE_DECL
6738 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6740 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6741 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6743 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6745 /* Change the type so that assemble_variable will give
6746 DECL an rtl we can live with: (mem (const_int 0)). */
6747 type
= TREE_TYPE (decl
) = error_mark_node
;
6751 /* If any base type in the hierarchy of TYPE needs a constructor,
6752 then we set initialized to 1. This way any nodes which are
6753 created for the purposes of initializing this aggregate
6754 will live as long as it does. This is necessary for global
6755 aggregates which do not have their initializers processed until
6756 the end of the file. */
6757 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6762 /* We don't do this yet for GNU C++. */
6763 /* For a local variable, define the RTL now. */
6764 if (! toplevel_bindings_p ()
6765 /* But not if this is a duplicate decl
6766 and we preserved the rtl from the previous one
6767 (which may or may not happen). */
6768 && DECL_RTL (tem
) == NULL_RTX
)
6770 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6772 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6773 && DECL_INITIAL (tem
) != NULL_TREE
)
6779 DECL_INITIAL (decl
) = NULL_TREE
;
6782 /* Handle initialization of references.
6783 These three arguments are from `cp_finish_decl', and have the
6784 same meaning here that they do there.
6786 Quotes on semantics can be found in ARM 8.4.3. */
6789 grok_reference_init (decl
, type
, init
)
6790 tree decl
, type
, init
;
6794 if (init
== NULL_TREE
)
6796 if ((DECL_LANG_SPECIFIC (decl
) == 0
6797 || DECL_IN_AGGR_P (decl
) == 0)
6798 && ! DECL_THIS_EXTERN (decl
))
6800 cp_error ("`%D' declared as reference but not initialized", decl
);
6801 if (TREE_CODE (decl
) == VAR_DECL
)
6802 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6807 if (init
== error_mark_node
)
6810 if (TREE_CODE (type
) == REFERENCE_TYPE
6811 && TREE_CODE (init
) == CONSTRUCTOR
)
6813 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6817 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6818 /* decay_conversion is probably wrong for references to functions. */
6819 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6821 if (TREE_CODE (init
) == TREE_LIST
)
6822 init
= build_compound_expr (init
);
6824 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6825 init
= convert_from_reference (init
);
6827 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6828 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6830 /* Note: default conversion is only called in very special cases. */
6831 init
= default_conversion (init
);
6834 tmp
= convert_to_reference
6835 (type
, init
, CONV_IMPLICIT
,
6836 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6838 if (tmp
== error_mark_node
)
6840 else if (tmp
!= NULL_TREE
)
6843 DECL_INITIAL (decl
) = save_expr (init
);
6847 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6851 /* ?? Can this be optimized in some cases to
6852 hand back the DECL_INITIAL slot?? */
6853 if (TYPE_SIZE (TREE_TYPE (type
)))
6855 init
= convert_from_reference (decl
);
6856 if (TREE_PERMANENT (decl
))
6857 init
= copy_to_permanent (init
);
6858 SET_DECL_REFERENCE_SLOT (decl
, init
);
6861 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6863 expand_static_init (decl
, DECL_INITIAL (decl
));
6864 DECL_INITIAL (decl
) = NULL_TREE
;
6869 if (TREE_CODE (decl
) == VAR_DECL
)
6870 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6874 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6875 mucking with forces it does not comprehend (i.e. initialization with a
6876 constructor). If we are at global scope and won't go into COMMON, fill
6877 it in with a dummy CONSTRUCTOR to force the variable into .data;
6878 otherwise we can use error_mark_node. */
6881 obscure_complex_init (decl
, init
)
6884 if (! flag_no_inline
&& TREE_STATIC (decl
))
6886 if (extract_init (decl
, init
))
6890 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6891 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6892 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6896 DECL_INITIAL (decl
) = error_mark_node
;
6901 /* Finish processing of a declaration;
6902 install its line number and initial value.
6903 If the length of an array type is not known before,
6904 it must be determined now, from the initial value, or it is an error.
6906 Call `pop_obstacks' iff NEED_POP is nonzero.
6908 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6909 for aggregates that have constructors alive on the permanent obstack,
6910 so that the global initializing functions can be written at the end.
6912 INIT0 holds the value of an initializer that should be allowed to escape
6915 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6916 if the (init) syntax was used.
6918 For functions that take default parameters, DECL points to its
6919 "maximal" instantiation. `cp_finish_decl' must then also declared its
6920 subsequently lower and lower forms of instantiation, checking for
6921 ambiguity as it goes. This can be sped up later. */
6924 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6931 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
6933 int temporary
= allocation_temporary_p ();
6934 char *asmspec
= NULL
;
6935 int was_readonly
= 0;
6936 int already_used
= 0;
6938 /* If this is 0, then we did not change obstacks. */
6942 error ("assignment (not initialization) in declaration");
6946 /* If a name was specified, get the string. */
6948 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6950 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
6952 cp_error ("Cannot initialize `%D' to namespace `%D'",
6957 if (TREE_CODE (decl
) == VAR_DECL
6958 && DECL_CONTEXT (decl
)
6959 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
6960 && DECL_CONTEXT (decl
) != current_namespace
6963 /* Leave the namespace of the object. */
6964 pop_decl_namespace ();
6967 /* If the type of the thing we are declaring either has
6968 a constructor, or has a virtual function table pointer,
6969 AND its initialization was accepted by `start_decl',
6970 then we stayed on the permanent obstack through the
6971 declaration, otherwise, changed obstacks as GCC would. */
6973 type
= TREE_TYPE (decl
);
6975 if (type
== error_mark_node
)
6977 if (toplevel_bindings_p () && temporary
)
6978 end_temporary_allocation ();
6983 if (processing_template_decl
)
6985 if (init
&& DECL_INITIAL (decl
))
6986 DECL_INITIAL (decl
) = init
;
6987 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
6989 tree stmt
= DECL_VINDEX (decl
);
6990 /* If the decl is declaring a member of a local class (in a
6991 template function), the DECL_VINDEX will either be NULL,
6992 or it will be an actual virtual function index, not a
6994 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
6996 DECL_VINDEX (decl
) = NULL_TREE
;
6997 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
7004 /* Take care of TYPE_DECLs up front. */
7005 if (TREE_CODE (decl
) == TYPE_DECL
)
7007 if (init
&& DECL_INITIAL (decl
))
7009 /* typedef foo = bar; store the type of bar as the type of foo. */
7010 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
7011 DECL_INITIAL (decl
) = init
= NULL_TREE
;
7013 if (type
!= error_mark_node
7014 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
7016 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
7017 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
7018 set_identifier_type_value (DECL_NAME (decl
), type
);
7019 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7021 GNU_xref_decl (current_function_decl
, decl
);
7023 /* If we have installed this as the canonical typedef for this
7024 type, and that type has not been defined yet, delay emitting
7025 the debug information for it, as we will emit it later. */
7026 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7027 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7028 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7030 rest_of_decl_compilation (decl
, NULL_PTR
,
7031 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7034 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7036 ttype
= target_type (type
);
7039 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7040 && TYPE_NEEDS_CONSTRUCTING (type
))
7043 /* Currently, GNU C++ puts constants in text space, making them
7044 impossible to initialize. In the future, one would hope for
7045 an operating system which understood the difference between
7046 initialization and the running of a program. */
7048 TREE_READONLY (decl
) = 0;
7051 if (TREE_CODE (decl
) == FIELD_DECL
)
7053 if (init
&& init
!= error_mark_node
)
7054 my_friendly_assert (TREE_PERMANENT (init
), 147);
7058 /* This must override the asm specifier which was placed
7059 by grokclassfn. Lay this out fresh. */
7060 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7061 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7062 make_decl_rtl (decl
, asmspec
, 0);
7065 /* If `start_decl' didn't like having an initialization, ignore it now. */
7066 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7068 else if (DECL_EXTERNAL (decl
))
7070 else if (TREE_CODE (type
) == REFERENCE_TYPE
7071 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7073 if (TREE_STATIC (decl
))
7074 make_decl_rtl (decl
, NULL_PTR
,
7075 toplevel_bindings_p ()
7076 || pseudo_global_level_p ());
7077 grok_reference_init (decl
, type
, init
);
7081 GNU_xref_decl (current_function_decl
, decl
);
7083 if (TREE_CODE (decl
) == FIELD_DECL
)
7085 else if (TREE_CODE (decl
) == CONST_DECL
)
7087 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7089 DECL_INITIAL (decl
) = init
;
7091 /* This will keep us from needing to worry about our obstacks. */
7092 my_friendly_assert (init
!= NULL_TREE
, 149);
7097 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7099 if (TREE_CODE (type
) == ARRAY_TYPE
)
7100 init
= digest_init (type
, init
, (tree
*) 0);
7101 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7103 if (TYPE_NON_AGGREGATE_CLASS (type
))
7105 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7107 init
= error_mark_node
;
7110 goto dont_use_constructor
;
7115 dont_use_constructor
:
7116 if (TREE_CODE (init
) != TREE_VEC
)
7117 init
= store_init_value (decl
, init
);
7121 /* We must hide the initializer so that expand_decl
7122 won't try to do something it does not understand. */
7123 init
= obscure_complex_init (decl
, init
);
7125 else if (DECL_EXTERNAL (decl
))
7127 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7128 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7131 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7132 ctype
= TREE_TYPE (ctype
);
7133 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7135 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7136 cp_error ("structure `%D' with uninitialized const members", decl
);
7137 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7138 cp_error ("structure `%D' with uninitialized reference members",
7142 if (TREE_CODE (decl
) == VAR_DECL
7143 && !DECL_INITIAL (decl
)
7144 && !TYPE_NEEDS_CONSTRUCTING (type
)
7145 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7146 cp_error ("uninitialized const `%D'", decl
);
7148 if (TYPE_SIZE (type
) != NULL_TREE
7149 && TYPE_NEEDS_CONSTRUCTING (type
))
7150 init
= obscure_complex_init (decl
, NULL_TREE
);
7152 else if (TREE_CODE (decl
) == VAR_DECL
7153 && TREE_CODE (type
) != REFERENCE_TYPE
7154 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7156 /* ``Unless explicitly declared extern, a const object does not have
7157 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7158 However, if it's `const int foo = 1; const int foo;', don't complain
7159 about the second decl, since it does have an initializer before.
7160 We deliberately don't complain about arrays, because they're
7161 supposed to be initialized by a constructor. */
7162 if (! DECL_INITIAL (decl
)
7163 && TREE_CODE (type
) != ARRAY_TYPE
7164 && (!pedantic
|| !current_class_type
))
7165 cp_error ("uninitialized const `%#D'", decl
);
7168 /* For top-level declaration, the initial value was read in
7169 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7170 must go in the permanent obstack; but don't discard the
7171 temporary data yet. */
7173 if (toplevel_bindings_p () && temporary
)
7174 end_temporary_allocation ();
7176 /* Deduce size of array from initialization, if not already known. */
7178 if (TREE_CODE (type
) == ARRAY_TYPE
7179 && TYPE_DOMAIN (type
) == NULL_TREE
7180 && TREE_CODE (decl
) != TYPE_DECL
)
7183 = (TREE_STATIC (decl
)
7184 /* Even if pedantic, an external linkage array
7185 may have incomplete type at first. */
7186 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7187 : !DECL_EXTERNAL (decl
));
7188 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7189 int failure
= complete_array_type (type
, initializer
, do_default
);
7192 cp_error ("initializer fails to determine size of `%D'", decl
);
7197 cp_error ("array size missing in `%D'", decl
);
7198 /* If a `static' var's size isn't known, make it extern as
7199 well as static, so it does not get allocated. If it's not
7200 `static', then don't mark it extern; finish_incomplete_decl
7201 will give it a default size and it will get allocated. */
7202 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7203 DECL_EXTERNAL (decl
) = 1;
7206 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7207 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7209 cp_error ("zero-size array `%D'", decl
);
7211 layout_decl (decl
, 0);
7214 if (TREE_CODE (decl
) == VAR_DECL
)
7216 if (DECL_SIZE (decl
) == NULL_TREE
7217 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7218 layout_decl (decl
, 0);
7220 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7222 /* A static variable with an incomplete type:
7223 that is an error if it is initialized.
7224 Otherwise, let it through, but if it is not `extern'
7225 then it may cause an error message later. */
7226 if (DECL_INITIAL (decl
) != NULL_TREE
)
7227 cp_error ("storage size of `%D' isn't known", decl
);
7230 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7232 /* An automatic variable with an incomplete type: that is an error.
7233 Don't talk about array types here, since we took care of that
7234 message in grokdeclarator. */
7235 cp_error ("storage size of `%D' isn't known", decl
);
7236 TREE_TYPE (decl
) = error_mark_node
;
7238 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7239 /* Let debugger know it should output info for this type. */
7240 note_debug_info_needed (ttype
);
7242 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7243 note_debug_info_needed (DECL_CONTEXT (decl
));
7245 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7246 && DECL_SIZE (decl
) != NULL_TREE
7247 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7249 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7250 constant_expression_warning (DECL_SIZE (decl
));
7252 cp_error ("storage size of `%D' isn't constant", decl
);
7255 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7256 /* Cleanups for static variables are handled by `finish_file'. */
7257 && ! TREE_STATIC (decl
))
7259 int yes
= suspend_momentary ();
7260 cleanup
= maybe_build_cleanup (decl
);
7261 resume_momentary (yes
);
7264 /* PARM_DECLs get cleanups, too. */
7265 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7268 end_temporary_allocation ();
7269 cleanup
= maybe_build_cleanup (decl
);
7271 resume_temporary_allocation ();
7274 /* Output the assembler code and/or RTL code for variables and functions,
7275 unless the type is an undefined structure or union.
7276 If not, it will get done when the type is completed. */
7278 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7280 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7281 || TREE_CODE (decl
) == RESULT_DECL
)
7283 /* ??? FIXME: What about nested classes? */
7284 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7286 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7287 && allocation_temporary_p ());
7290 end_temporary_allocation ();
7292 /* Extern inline function static data has external linkage.
7293 Instead of trying to deal with that, we disable inlining of
7294 such functions. The ASM_WRITTEN check is to avoid hitting this
7295 for __FUNCTION__. */
7296 if (TREE_CODE (decl
) == VAR_DECL
7297 && TREE_STATIC (decl
)
7298 && ! TREE_ASM_WRITTEN (decl
)
7299 && current_function_decl
7300 && DECL_CONTEXT (decl
) == current_function_decl
7301 && DECL_THIS_INLINE (current_function_decl
)
7302 && TREE_PUBLIC (current_function_decl
))
7304 current_function_cannot_inline
7305 = "function with static variable cannot be inline";
7308 else if (TREE_CODE (decl
) == VAR_DECL
7309 && DECL_LANG_SPECIFIC (decl
)
7310 && DECL_COMDAT (decl
))
7312 /* Dynamically initialized vars go into common. */
7313 if (DECL_INITIAL (decl
) == NULL_TREE
7314 || DECL_INITIAL (decl
) == error_mark_node
)
7315 DECL_COMMON (decl
) = 1;
7316 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7318 DECL_COMMON (decl
) = 1;
7319 DECL_INITIAL (decl
) = error_mark_node
;
7323 /* Statically initialized vars are weak or comdat, if
7326 make_decl_one_only (decl
);
7329 /* We can't do anything useful; leave vars for explicit
7331 DECL_EXTERNAL (decl
) = 1;
7332 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7337 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7338 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7339 else if (TREE_CODE (decl
) == VAR_DECL
7340 && TREE_READONLY (decl
)
7341 && DECL_INITIAL (decl
) != NULL_TREE
7342 && DECL_INITIAL (decl
) != error_mark_node
7343 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7345 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7348 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7351 && TREE_STATIC (decl
)
7352 && ! TREE_SIDE_EFFECTS (decl
)
7353 && ! TREE_PUBLIC (decl
)
7354 && ! DECL_EXTERNAL (decl
)
7355 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7356 && DECL_MODE (decl
) != BLKmode
)
7358 /* If this variable is really a constant, then fill its DECL_RTL
7359 slot with something which won't take up storage.
7360 If something later should take its address, we can always give
7361 it legitimate RTL at that time. */
7362 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7363 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7364 TREE_ASM_WRITTEN (decl
) = 1;
7366 else if (toplev
&& ! TREE_PUBLIC (decl
))
7368 /* If this is a static const, change its apparent linkage
7369 if it belongs to a #pragma interface. */
7370 if (!interface_unknown
)
7372 TREE_PUBLIC (decl
) = 1;
7373 DECL_EXTERNAL (decl
) = interface_only
;
7375 make_decl_rtl (decl
, asmspec
, toplev
);
7378 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7380 else if (TREE_CODE (decl
) == VAR_DECL
7381 && DECL_LANG_SPECIFIC (decl
)
7382 && DECL_IN_AGGR_P (decl
))
7384 if (TREE_STATIC (decl
))
7386 if (init
== NULL_TREE
7387 #ifdef DEFAULT_STATIC_DEFS
7388 /* If this code is dead, then users must
7389 explicitly declare static member variables
7390 outside the class def'n as well. */
7391 && TYPE_NEEDS_CONSTRUCTING (type
)
7395 DECL_EXTERNAL (decl
) = 1;
7396 make_decl_rtl (decl
, asmspec
, 1);
7399 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7402 /* Just a constant field. Should not need any rtl. */
7406 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7409 resume_temporary_allocation ();
7411 if (type
!= error_mark_node
7412 && TYPE_LANG_SPECIFIC (type
)
7413 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7414 abstract_virtuals_error (decl
, type
);
7415 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7416 || TREE_CODE (type
) == METHOD_TYPE
)
7417 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7418 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7419 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7421 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7422 signature_error (decl
, type
);
7423 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7424 || TREE_CODE (type
) == METHOD_TYPE
)
7425 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7426 && IS_SIGNATURE (TREE_TYPE (type
)))
7427 signature_error (decl
, TREE_TYPE (type
));
7429 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7431 else if (DECL_EXTERNAL (decl
)
7432 && ! (DECL_LANG_SPECIFIC (decl
)
7433 && DECL_NOT_REALLY_EXTERN (decl
)))
7436 DECL_INITIAL (decl
) = init
;
7438 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7440 /* Cleanups for static variables are handled by `finish_file'. */
7441 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7442 || TYPE_NEEDS_DESTRUCTOR (type
))
7443 expand_static_init (decl
, init
);
7447 /* This is a declared decl which must live until the
7448 end of the binding contour. It may need a cleanup. */
7450 /* Recompute the RTL of a local array now
7451 if it used to be an incomplete type. */
7452 if (was_incomplete
&& ! TREE_STATIC (decl
))
7454 /* If we used it already as memory, it must stay in memory. */
7455 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7456 /* If it's still incomplete now, no init will save it. */
7457 if (DECL_SIZE (decl
) == NULL_TREE
)
7458 DECL_INITIAL (decl
) = NULL_TREE
;
7461 else if (! TREE_ASM_WRITTEN (decl
)
7462 && (TYPE_SIZE (type
) != NULL_TREE
7463 || TREE_CODE (type
) == ARRAY_TYPE
))
7465 /* Do this here, because we did not expand this decl's
7466 rtl in start_decl. */
7467 if (DECL_RTL (decl
) == NULL_RTX
)
7471 /* XXX: Why don't we use decl here? */
7472 /* Ans: Because it was already expanded? */
7473 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7474 cp_error ("parser lost in parsing declaration of `%D'",
7476 /* Cleanup used up here. */
7477 cleanup
= NULL_TREE
;
7481 if (current_binding_level
->is_for_scope
)
7483 struct binding_level
*outer
= current_binding_level
->level_chain
;
7485 /* Check to see if the same name is already bound at
7486 the outer level, either because it was directly declared,
7487 or because a dead for-decl got preserved. In either case,
7488 the code would not have been valid under the ARM
7489 scope rules, so clear is_for_scope for the
7490 current_binding_level.
7492 Otherwise, we need to preserve the temp slot for decl
7493 to last into the outer binding level. */
7495 int handling_dead_for_vars
= 0;
7496 tree link
= outer
->names
;
7497 for (; ; link
= TREE_CHAIN (link
))
7499 if (link
== NULL
&& handling_dead_for_vars
== 0)
7501 link
= outer
->dead_vars_from_for
;
7502 handling_dead_for_vars
= 1;
7506 if (DECL_IN_MEMORY_P (decl
))
7507 preserve_temp_slots (DECL_RTL (decl
));
7510 if (DECL_NAME (link
) == DECL_NAME (decl
))
7512 if (handling_dead_for_vars
)
7515 = purpose_member (DECL_NAME (decl
),
7516 current_binding_level
->shadowed
);
7517 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7518 TREE_VALUE (shadowing
)
7519 = DECL_SHADOWED_FOR_VAR (link
);
7521 current_binding_level
->is_for_scope
= 0;
7527 expand_start_target_temps ();
7529 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7531 /* Compute and store the initial value. */
7532 expand_decl_init (decl
);
7533 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7535 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7537 emit_line_note (DECL_SOURCE_FILE (decl
),
7538 DECL_SOURCE_LINE (decl
));
7539 expand_aggr_init (decl
, init
, flags
);
7542 /* Set this to 0 so we can tell whether an aggregate which
7543 was initialized was ever used. Don't do this if it has a
7544 destructor, so we don't complain about the 'resource
7545 allocation is initialization' idiom. */
7546 /* Now set attribute((unused)) on types so decls of
7547 that type will be marked used. (see TREE_USED, above.)
7548 This avoids the warning problems this particular code
7549 tried to work around. */
7551 if (TYPE_NEEDS_CONSTRUCTING (type
)
7553 && cleanup
== NULL_TREE
7554 && DECL_NAME (decl
))
7555 TREE_USED (decl
) = 0;
7558 TREE_USED (decl
) = 1;
7561 /* Cleanup any temporaries needed for the initial value. */
7562 expand_end_target_temps ();
7564 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7566 /* Store the cleanup, if there was one. */
7569 if (! expand_decl_cleanup (decl
, cleanup
))
7570 cp_error ("parser lost in parsing declaration of `%D'",
7577 /* Undo call to `pushclass' that was done in `start_decl'
7578 due to initialization of qualified member variable.
7579 I.e., Foo::x = 10; */
7581 tree context
= DECL_REAL_CONTEXT (decl
);
7583 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7584 && (TREE_CODE (decl
) == VAR_DECL
7585 /* We also have a pushclass done that we need to undo here
7586 if we're at top level and declare a method. */
7587 || TREE_CODE (decl
) == FUNCTION_DECL
)
7588 /* If size hasn't been set, we're still defining it,
7589 and therefore inside the class body; don't pop
7590 the binding level.. */
7591 && TYPE_SIZE (context
) != NULL_TREE
7592 && context
== current_class_type
)
7599 /* If requested, warn about definitions of large data objects. */
7601 if (warn_larger_than
7602 && ! processing_template_decl
7603 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7604 && !DECL_EXTERNAL (decl
))
7606 register tree decl_size
= DECL_SIZE (decl
);
7608 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7610 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7612 if (units
> larger_than_size
)
7613 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7619 /* Resume permanent allocation, if not within a function. */
7620 /* The corresponding push_obstacks_nochange is in start_decl,
7621 start_method, groktypename, and in grokfield. */
7626 TREE_READONLY (decl
) = 1;
7629 /* This is here for a midend callback from c-common.c */
7632 finish_decl (decl
, init
, asmspec_tree
)
7636 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7640 expand_static_init (decl
, init
)
7644 tree oldstatic
= value_member (decl
, static_aggregates
);
7648 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7649 cp_error ("multiple initializations given for `%D'", decl
);
7651 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7653 /* Emit code to perform this initialization but once. */
7656 /* Remember this information until end of file. */
7657 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7659 /* Emit code to perform this initialization but once. */
7660 temp
= get_temp_name (integer_type_node
, 1);
7661 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7662 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7663 integer_zero_node
, 1), 0);
7664 expand_start_target_temps ();
7666 expand_assignment (temp
, integer_one_node
, 0, 0);
7667 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7668 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7670 expand_aggr_init (decl
, init
, 0);
7671 do_pending_stack_adjust ();
7674 expand_assignment (decl
, init
, 0, 0);
7676 /* Cleanup any temporaries needed for the initial value. */
7677 expand_end_target_temps ();
7679 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7681 tree cleanup
, fcall
;
7682 static tree Atexit
= 0;
7685 tree atexit_fndecl
, PFV
, pfvlist
;
7686 /* Remember this information until end of file. */
7687 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7688 PFV
= build_pointer_type (build_function_type
7689 (void_type_node
, void_list_node
));
7691 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7693 push_lang_context (lang_name_c
);
7695 = builtin_function ("atexit",
7696 build_function_type (void_type_node
,
7698 NOT_BUILT_IN
, NULL_PTR
);
7699 assemble_external (atexit_fndecl
);
7700 Atexit
= default_conversion (atexit_fndecl
);
7701 pop_lang_context ();
7705 cleanup
= start_anon_func ();
7706 expand_expr_stmt (build_cleanup (decl
));
7708 mark_addressable (cleanup
);
7709 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7710 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7711 expand_expr_stmt (fcall
);
7715 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7717 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7718 TREE_STATIC (static_aggregates
) = 1;
7721 /* Resume old (possibly temporary) allocation. */
7726 /* This code takes into account memory allocation
7727 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7728 does not hold for this object, then we must make permanent
7729 the storage currently in the temporary obstack. */
7730 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7731 preserve_initializer ();
7732 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7736 /* Make TYPE a complete type based on INITIAL_VALUE.
7737 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7738 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7741 complete_array_type (type
, initial_value
, do_default
)
7742 tree type
, initial_value
;
7745 register tree maxindex
= NULL_TREE
;
7750 /* Note MAXINDEX is really the maximum index,
7751 one less than the size. */
7752 if (TREE_CODE (initial_value
) == STRING_CST
)
7755 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7756 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7759 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7761 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7762 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7763 for (; elts
; elts
= TREE_CHAIN (elts
))
7765 if (TREE_PURPOSE (elts
))
7766 maxindex
= TREE_PURPOSE (elts
);
7768 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7770 maxindex
= copy_node (maxindex
);
7774 /* Make an error message unless that happened already. */
7775 if (initial_value
!= error_mark_node
)
7778 /* Prevent further error messages. */
7779 maxindex
= build_int_2 (0, 0);
7786 maxindex
= build_int_2 (0, 0);
7794 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7795 if (! TREE_TYPE (maxindex
))
7796 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7798 itype
= TREE_TYPE (initial_value
);
7801 if (itype
&& !TYPE_DOMAIN (itype
))
7802 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7803 /* The type of the main variant should never be used for arrays
7804 of different sizes. It should only ever be completed with the
7805 size of the array. */
7806 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7807 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7810 /* Lay out the type now that we can get the real answer. */
7817 /* Return zero if something is declared to be a member of type
7818 CTYPE when in the context of CUR_TYPE. STRING is the error
7819 message to print in that case. Otherwise, quietly return 1. */
7822 member_function_or_else (ctype
, cur_type
, string
)
7823 tree ctype
, cur_type
;
7826 if (ctype
&& ctype
!= cur_type
)
7828 error (string
, TYPE_NAME_STRING (ctype
));
7834 /* Subroutine of `grokdeclarator'. */
7836 /* Generate errors possibly applicable for a given set of specifiers.
7837 This is for ARM $7.1.2. */
7840 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7843 int virtualp
, quals
, friendp
, raises
, inlinep
;
7846 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7848 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7850 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7853 cp_error_at ("invalid friend declaration", object
);
7855 cp_error_at ("invalid exception specifications", object
);
7858 /* CTYPE is class type, or null if non-class.
7859 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7861 DECLARATOR is the function's name.
7862 VIRTUALP is truthvalue of whether the function is virtual or not.
7863 FLAGS are to be passed through to `grokclassfn'.
7864 QUALS are qualifiers indicating whether the function is `const'
7866 RAISES is a list of exceptions that this function can raise.
7867 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7868 not look, and -1 if we should not call `grokclassfn' at all.
7870 Returns `error_mark_node' if something goes wrong, after issuing
7871 applicable error messages. */
7874 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7875 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7876 template_count
, in_namespace
)
7879 tree orig_declarator
;
7881 enum overload_flags flags
;
7882 tree quals
, raises
, attrlist
;
7883 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7887 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7891 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7892 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7898 type
= build_exception_variant (type
, raises
);
7901 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7902 /* Propagate volatile out from type to decl. */
7903 if (TYPE_VOLATILE (type
))
7904 TREE_THIS_VOLATILE (decl
) = 1;
7906 /* This decl is not from the current namespace. */
7908 set_decl_namespace (decl
, in_namespace
);
7910 /* Should probably propagate const out from type to decl I bet (mrs). */
7913 DECL_STATIC_FUNCTION_P (decl
) = 1;
7914 DECL_CONTEXT (decl
) = ctype
;
7918 DECL_CLASS_CONTEXT (decl
) = ctype
;
7920 if (ctype
== NULL_TREE
&& MAIN_NAME_P (declarator
))
7923 error ("cannot declare `main' to be inline");
7925 error ("cannot declare `main' to be static");
7930 /* Members of anonymous types have no linkage; make them internal. */
7931 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
7936 /* [basic.link]: A name with no linkage (notably, the name of a class
7937 or enumeration declared in a local scope) shall not be used to
7938 declare an entity with linkage.
7940 Only check this for public decls for now. */
7941 t
= no_linkage_check (TREE_TYPE (decl
));
7944 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
7945 cp_pedwarn ("non-local function `%#D' uses anonymous type", decl
);
7947 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
7952 TREE_PUBLIC (decl
) = publicp
;
7955 DECL_INTERFACE_KNOWN (decl
) = 1;
7956 DECL_NOT_REALLY_EXTERN (decl
) = 1;
7960 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7962 DECL_EXTERNAL (decl
) = 1;
7963 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7965 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7966 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7970 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7971 grok_op_properties (decl
, virtualp
, check
< 0);
7973 if (ctype
&& hack_decl_function_context (decl
))
7974 DECL_NO_STATIC_CHAIN (decl
) = 1;
7976 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
7977 if (TREE_PURPOSE (t
)
7978 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
7980 add_defarg_fn (decl
);
7985 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
7989 ("defining explicit specialization `%D' in friend declaration",
7993 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
7995 /* Something like `template <class T> friend void f<T>()'. */
7996 cp_error ("template-id `%D' in declaration of primary template",
7998 return error_mark_node
;
8001 /* A friend declaration of the form friend void f<>(). Record
8002 the information in the TEMPLATE_ID_EXPR. */
8003 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
8004 DECL_TEMPLATE_INFO (decl
)
8005 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
8006 TREE_OPERAND (orig_declarator
, 1),
8011 /* Caller will do the rest of this. */
8015 if (check
&& funcdef_flag
)
8016 DECL_INITIAL (decl
) = error_mark_node
;
8018 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
8021 /* Just handle constructors here. We could do this
8022 inside the following if stmt, but I think
8023 that the code is more legible by breaking this
8024 case out. See comments below for what each of
8025 the following calls is supposed to do. */
8026 DECL_CONSTRUCTOR_P (decl
) = 1;
8028 grokclassfn (ctype
, decl
, flags
, quals
);
8030 decl
= check_explicit_specialization (orig_declarator
, decl
,
8032 2 * (funcdef_flag
!= 0) +
8033 4 * (friendp
!= 0));
8034 if (decl
== error_mark_node
)
8035 return error_mark_node
;
8037 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8040 tmp
= check_classfn (ctype
, decl
);
8042 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8043 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8045 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8046 cp_error ("definition of implicitly-declared `%D'", tmp
);
8047 if (tmp
&& duplicate_decls (decl
, tmp
))
8050 if (! grok_ctor_properties (ctype
, decl
))
8051 return error_mark_node
;
8053 if (check
== 0 && ! current_function_decl
)
8055 /* Assembler names live in the global namespace. */
8056 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
8057 if (tmp
== NULL_TREE
)
8058 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8059 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8060 cp_error ("inconsistent declarations for `%D'", decl
);
8063 duplicate_decls (decl
, tmp
);
8066 make_decl_rtl (decl
, NULL_PTR
, 1);
8073 /* Function gets the ugly name, field gets the nice one.
8074 This call may change the type of the function (because
8075 of default parameters)! */
8076 if (ctype
!= NULL_TREE
)
8077 grokclassfn (ctype
, decl
, flags
, quals
);
8079 decl
= check_explicit_specialization (orig_declarator
, decl
,
8081 2 * (funcdef_flag
!= 0) +
8082 4 * (friendp
!= 0));
8083 if (decl
== error_mark_node
)
8084 return error_mark_node
;
8086 if (ctype
!= NULL_TREE
8087 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8090 tmp
= check_classfn (ctype
, decl
);
8092 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8093 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8095 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8096 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8098 /* Remove the `this' parm added by grokclassfn.
8099 XXX Isn't this done in start_function, too? */
8100 revert_static_member_fn (&decl
, NULL
, NULL
);
8101 last_function_parms
= TREE_CHAIN (last_function_parms
);
8103 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8104 cp_error ("definition of implicitly-declared `%D'", tmp
);
8107 if (!duplicate_decls (decl
, tmp
))
8108 my_friendly_abort (892);
8113 if (ctype
== NULL_TREE
|| check
)
8116 /* Now install the declaration of this function so that others may
8117 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8119 if (! current_function_decl
)
8121 if (!DECL_TEMPLATE_SPECIALIZATION (decl
))
8123 /* We don't do this for specializations since the
8124 equivalent checks will be done later. Also, at this
8125 point the DECL_ASSEMBLER_NAME is not yet fully
8128 /* FIXME: this should only need to look at
8129 IDENTIFIER_GLOBAL_VALUE. */
8130 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
8131 if (tmp
== NULL_TREE
)
8132 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8133 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8134 cp_error ("inconsistent declarations for `%D'", decl
);
8137 duplicate_decls (decl
, tmp
);
8143 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8144 TREE_VALUE (attrlist
));
8145 make_decl_rtl (decl
, NULL_PTR
, 1);
8149 DECL_VIRTUAL_P (decl
) = 1;
8150 if (DECL_VINDEX (decl
) == NULL_TREE
)
8151 DECL_VINDEX (decl
) = error_mark_node
;
8152 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8159 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8162 RID_BIT_TYPE
*specbits_in
;
8168 RID_BIT_TYPE specbits
;
8170 specbits
= *specbits_in
;
8172 if (TREE_CODE (type
) == OFFSET_TYPE
)
8174 /* If you declare a static member so that it
8175 can be initialized, the code will reach here. */
8176 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8177 type
= TREE_TYPE (type
);
8178 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8179 DECL_CONTEXT (decl
) = basetype
;
8180 DECL_CLASS_CONTEXT (decl
) = basetype
;
8181 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8185 tree context
= in_namespace
? in_namespace
: current_namespace
;
8186 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8187 if (context
!= global_namespace
&& namespace_bindings_p ()
8188 && current_lang_name
!= lang_name_c
)
8189 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8194 set_decl_namespace (decl
, in_namespace
);
8196 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8198 DECL_THIS_EXTERN (decl
) = 1;
8199 DECL_EXTERNAL (decl
) = !initialized
;
8202 /* In class context, static means one per class,
8203 public access, and static storage. */
8204 if (DECL_CLASS_SCOPE_P (decl
))
8206 TREE_PUBLIC (decl
) = 1;
8207 TREE_STATIC (decl
) = 1;
8208 DECL_EXTERNAL (decl
) = 0;
8210 /* At top level, either `static' or no s.c. makes a definition
8211 (perhaps tentative), and absence of `static' makes it public. */
8212 else if (toplevel_bindings_p ())
8214 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8215 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8216 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8218 /* Not at top level, only `static' makes a static definition. */
8221 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8222 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8225 if (TREE_PUBLIC (decl
))
8227 /* [basic.link]: A name with no linkage (notably, the name of a class
8228 or enumeration declared in a local scope) shall not be used to
8229 declare an entity with linkage.
8231 Only check this for public decls for now. */
8232 tree t
= no_linkage_check (TREE_TYPE (decl
));
8235 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8236 /* Ignore for now; `enum { foo } e' is pretty common. */;
8238 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8246 /* Create a canonical pointer to member function type. */
8249 build_ptrmemfunc_type (type
)
8256 /* If a canonical type already exists for this type, use it. We use
8257 this method instead of type_hash_canon, because it only does a
8258 simple equality check on the list of field members. */
8260 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8263 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8265 u
= make_lang_type (UNION_TYPE
);
8266 IS_AGGR_TYPE (u
) = 0;
8267 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8268 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8270 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8271 TYPE_NAME (u
) = NULL_TREE
;
8273 t
= make_lang_type (RECORD_TYPE
);
8275 /* Let the front-end know this is a pointer to member function... */
8276 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8277 /* ... and not really an aggregate. */
8278 IS_AGGR_TYPE (t
) = 0;
8280 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8282 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8284 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8285 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8289 /* Zap out the name so that the back-end will give us the debugging
8290 information for this anonymous RECORD_TYPE. */
8291 TYPE_NAME (t
) = NULL_TREE
;
8293 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8295 /* Seems to be wanted. */
8296 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8300 /* Given declspecs and a declarator,
8301 determine the name and type of the object declared
8302 and construct a ..._DECL node for it.
8303 (In one case we can return a ..._TYPE node instead.
8304 For invalid input we sometimes return 0.)
8306 DECLSPECS is a chain of tree_list nodes whose value fields
8307 are the storage classes and type specifiers.
8309 DECL_CONTEXT says which syntactic context this declaration is in:
8310 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8311 FUNCDEF for a function definition. Like NORMAL but a few different
8312 error messages in each case. Return value may be zero meaning
8313 this definition is too screwy to try to parse.
8314 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8315 handle member functions (which have FIELD context).
8316 Return value may be zero meaning this definition is too screwy to
8318 PARM for a parameter declaration (either within a function prototype
8319 or before a function body). Make a PARM_DECL, or return void_type_node.
8320 CATCHPARM for a parameter declaration before a catch clause.
8321 TYPENAME if for a typename (in a cast or sizeof).
8322 Don't make a DECL node; just return the ..._TYPE node.
8323 FIELD for a struct or union field; make a FIELD_DECL.
8324 BITFIELD for a field with specified width.
8325 INITIALIZED is 1 if the decl has an initializer.
8327 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8328 It may also be so in the PARM case, for a prototype where the
8329 argument type is specified but not the name.
8331 This function is where the complicated C meanings of `static'
8332 and `extern' are interpreted.
8334 For C++, if there is any monkey business to do, the function which
8335 calls this one must do it, i.e., prepending instance variables,
8336 renaming overloaded function names, etc.
8338 Note that for this C++, it is an error to define a method within a class
8339 which does not belong to that class.
8341 Except in the case where SCOPE_REFs are implicitly known (such as
8342 methods within a class being redundantly qualified),
8343 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8344 (class_name::decl_name). The caller must also deal with this.
8346 If a constructor or destructor is seen, and the context is FIELD,
8347 then the type gains the attribute TREE_HAS_x. If such a declaration
8348 is erroneous, NULL_TREE is returned.
8350 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8351 function, these are the qualifiers to give to the `this' pointer.
8353 May return void_type_node if the declarator turned out to be a friend.
8354 See grokfield for details. */
8356 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8359 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8362 enum decl_context decl_context
;
8366 RID_BIT_TYPE specbits
;
8369 tree type
= NULL_TREE
;
8373 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8374 int explicit_int
= 0;
8375 int explicit_char
= 0;
8376 int defaulted_int
= 0;
8377 int opaque_typedef
= 0;
8378 tree typedef_decl
= NULL_TREE
;
8380 tree typedef_type
= NULL_TREE
;
8381 int funcdef_flag
= 0;
8382 enum tree_code innermost_code
= ERROR_MARK
;
8385 /* See the code below that used this. */
8386 tree decl_machine_attr
= NULL_TREE
;
8388 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8389 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8390 tree init
= NULL_TREE
;
8392 /* Keep track of what sort of function is being processed
8393 so that we can warn about default return values, or explicit
8394 return values which do not match prescribed defaults. */
8395 enum return_types return_type
= return_normal
;
8397 tree dname
= NULL_TREE
;
8398 tree ctype
= current_class_type
;
8399 tree ctor_return_type
= NULL_TREE
;
8400 enum overload_flags flags
= NO_SPECIAL
;
8401 tree quals
= NULL_TREE
;
8402 tree raises
= NULL_TREE
;
8403 int template_count
= 0;
8404 tree in_namespace
= NULL_TREE
;
8406 RIDBIT_RESET_ALL (specbits
);
8407 if (decl_context
== FUNCDEF
)
8408 funcdef_flag
= 1, decl_context
= NORMAL
;
8409 else if (decl_context
== MEMFUNCDEF
)
8410 funcdef_flag
= -1, decl_context
= FIELD
;
8411 else if (decl_context
== BITFIELD
)
8412 bitfield
= 1, decl_context
= FIELD
;
8414 /* Look inside a declarator for the name being declared
8415 and get it as a string, for an error message. */
8417 tree
*next
= &declarator
;
8421 while (next
&& *next
)
8424 switch (TREE_CODE (decl
))
8428 next
= &TREE_OPERAND (decl
, 0);
8431 case BIT_NOT_EXPR
: /* For C++ destructors! */
8433 tree name
= TREE_OPERAND (decl
, 0);
8434 tree rename
= NULL_TREE
;
8436 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8438 return_type
= return_dtor
;
8439 if (TREE_CODE (name
) == TYPE_DECL
)
8440 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8441 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8442 if (ctype
== NULL_TREE
)
8444 if (current_class_type
== NULL_TREE
)
8446 error ("destructors must be member functions");
8451 tree t
= constructor_name (current_class_name
);
8458 tree t
= constructor_name (ctype
);
8465 cp_error ("destructor `%T' must match class name `%T'",
8467 TREE_OPERAND (decl
, 0) = rename
;
8473 case ADDR_EXPR
: /* C++ reference declaration */
8478 innermost_code
= TREE_CODE (decl
);
8479 next
= &TREE_OPERAND (decl
, 0);
8483 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8485 /* This is actually a variable declaration using constructor
8486 syntax. We need to call start_decl and cp_finish_decl so we
8487 can get the variable initialized... */
8489 *next
= TREE_OPERAND (decl
, 0);
8490 init
= TREE_OPERAND (decl
, 1);
8492 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8493 /* Look for __unused__ attribute */
8494 if (TREE_USED (TREE_TYPE (decl
)))
8495 TREE_USED (decl
) = 1;
8496 finish_decl (decl
, init
, NULL_TREE
);
8499 innermost_code
= TREE_CODE (decl
);
8500 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8501 ctype
= current_class_type
;
8503 && TREE_OPERAND (decl
, 0)
8504 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8505 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8506 == constructor_name_full (ctype
))
8507 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8508 == constructor_name (ctype
)))))
8509 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8510 next
= &TREE_OPERAND (decl
, 0);
8512 if (ctype
!= NULL_TREE
8513 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8514 && decl
== constructor_name (ctype
))
8516 return_type
= return_ctor
;
8517 ctor_return_type
= ctype
;
8522 case TEMPLATE_ID_EXPR
:
8524 tree fns
= TREE_OPERAND (decl
, 0);
8526 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8527 fns
= TREE_OPERAND (fns
, 0);
8529 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8531 else if (is_overloaded_fn (fns
))
8532 dname
= DECL_NAME (get_first_fn (fns
));
8534 my_friendly_abort (0);
8538 case IDENTIFIER_NODE
:
8539 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8546 cp_error ("declarator-id missing; using reserved word `%D'",
8548 name
= IDENTIFIER_POINTER (dname
);
8550 if (! IDENTIFIER_OPNAME_P (dname
)
8551 /* GNU/Linux headers use '__op'. Arrgh. */
8552 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8553 name
= IDENTIFIER_POINTER (dname
);
8556 if (IDENTIFIER_TYPENAME_P (dname
))
8558 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8559 flags
= TYPENAME_FLAG
;
8560 ctor_return_type
= TREE_TYPE (dname
);
8561 return_type
= return_conversion
;
8563 name
= operator_name_string (dname
);
8570 /* Perform error checking, and decide on a ctype. */
8571 tree cname
= TREE_OPERAND (decl
, 0);
8572 if (cname
== NULL_TREE
)
8574 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8577 in_namespace
= TREE_OPERAND (decl
, 0);
8578 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8580 else if (! is_aggr_type (cname
, 1))
8581 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8582 /* Must test TREE_OPERAND (decl, 1), in case user gives
8583 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8584 else if (TREE_OPERAND (decl
, 1)
8585 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8587 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8588 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8590 cp_error ("`%T::%D' is not a valid declarator", cname
,
8591 TREE_OPERAND (decl
, 1));
8592 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8593 cname
, TREE_OPERAND (decl
, 1));
8594 return void_type_node
;
8596 else if (ctype
== NULL_TREE
)
8598 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8599 TREE_OPERAND (decl
, 0) = ctype
;
8602 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8604 cp_error ("type `%T' is not derived from type `%T'",
8606 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8612 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8613 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8614 == constructor_name_full (ctype
))
8615 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8616 == constructor_name (ctype
))))
8617 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8618 next
= &TREE_OPERAND (decl
, 1);
8622 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8623 && constructor_name (ctype
) == decl
)
8625 return_type
= return_ctor
;
8626 ctor_return_type
= ctype
;
8628 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8629 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8630 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8631 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8633 return_type
= return_dtor
;
8634 ctor_return_type
= ctype
;
8636 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8637 next
= &TREE_OPERAND (decl
, 0);
8648 /* Parse error puts this typespec where
8649 a declarator should go. */
8650 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8651 if (TREE_TYPE (decl
) == current_class_type
)
8652 cp_error (" perhaps you want `%T' for a constructor",
8653 current_class_name
);
8654 dname
= DECL_NAME (decl
);
8655 name
= IDENTIFIER_POINTER (dname
);
8657 /* Avoid giving two errors for this. */
8658 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8660 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8667 cp_compiler_error ("`%D' as declarator", decl
);
8668 return 0; /* We used to do a 155 abort here. */
8675 /* A function definition's declarator must have the form of
8676 a function declarator. */
8678 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8681 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8682 && innermost_code
!= CALL_EXPR
8683 && ! (ctype
&& declspecs
== NULL_TREE
))
8685 cp_error ("declaration of `%D' as non-function", dname
);
8686 return void_type_node
;
8689 /* Anything declared one level down from the top level
8690 must be one of the parameters of a function
8691 (because the body is at least two levels down). */
8693 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8694 by not allowing C++ class definitions to specify their parameters
8695 with xdecls (must be spec.d in the parmlist).
8697 Since we now wait to push a class scope until we are sure that
8698 we are in a legitimate method context, we must set oldcname
8699 explicitly (since current_class_name is not yet alive).
8701 We also want to avoid calling this a PARM if it is in a namespace. */
8703 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8704 && ! pseudo_global_level_p ())
8706 struct binding_level
*b
= current_binding_level
;
8707 current_binding_level
= b
->level_chain
;
8708 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8709 decl_context
= PARM
;
8710 current_binding_level
= b
;
8713 /* Look through the decl specs and record which ones appear.
8714 Some typespecs are defined as built-in typenames.
8715 Others, the ones that are modifiers of other types,
8716 are represented by bits in SPECBITS: set the bits for
8717 the modifiers that appear. Storage class keywords are also in SPECBITS.
8719 If there is a typedef name or a type, store the type in TYPE.
8720 This includes builtin typedefs such as `int'.
8722 Set EXPLICIT_INT if the type is `int' or `char' and did not
8723 come from a user typedef.
8725 Set LONGLONG if `long' is mentioned twice.
8727 For C++, constructors and destructors have their own fast treatment. */
8729 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8734 /* Certain parse errors slip through. For example,
8735 `int class;' is not caught by the parser. Try
8736 weakly to recover here. */
8737 if (TREE_CODE (spec
) != TREE_LIST
)
8740 id
= TREE_VALUE (spec
);
8742 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8744 if (id
== ridpointers
[(int) RID_INT
]
8745 || id
== ridpointers
[(int) RID_CHAR
]
8746 || id
== ridpointers
[(int) RID_BOOL
]
8747 || id
== ridpointers
[(int) RID_WCHAR
])
8751 if (id
== ridpointers
[(int) RID_BOOL
])
8752 error ("`bool' is now a keyword");
8754 cp_error ("extraneous `%T' ignored", id
);
8758 if (id
== ridpointers
[(int) RID_INT
])
8760 else if (id
== ridpointers
[(int) RID_CHAR
])
8762 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8766 /* C++ aggregate types. */
8767 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8770 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8772 type
= IDENTIFIER_TYPE_VALUE (id
);
8776 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8778 if (ridpointers
[i
] == id
)
8780 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8782 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8783 pedwarn ("ANSI C++ does not support `long long'");
8785 error ("`long long long' is too long for GCC");
8789 else if (RIDBIT_SETP (i
, specbits
))
8790 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8791 RIDBIT_SET (i
, specbits
);
8796 /* C++ aggregate types. */
8797 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8800 cp_error ("multiple declarations `%T' and `%T'", type
,
8804 type
= TREE_TYPE (id
);
8805 TREE_VALUE (spec
) = type
;
8810 error ("two or more data types in declaration of `%s'", name
);
8811 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8813 register tree t
= lookup_name (id
, 1);
8814 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8815 error ("`%s' fails to be a typedef or built in type",
8816 IDENTIFIER_POINTER (id
));
8819 type
= TREE_TYPE (t
);
8821 /* See the code below that used this. */
8822 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8827 else if (id
!= error_mark_node
)
8828 /* Can't change CLASS nodes into RECORD nodes here! */
8834 typedef_type
= type
;
8836 /* No type at all: default to `int', and set DEFAULTED_INT
8837 because it was not a user-defined typedef.
8838 Except when we have a `typedef' inside a signature, in
8839 which case the type defaults to `unknown type' and is
8840 instantiated when assigning to a signature pointer or ref. */
8842 if (type
== NULL_TREE
8843 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8844 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8845 || RIDBIT_SETP (RID_LONG
, specbits
)
8846 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8848 /* These imply 'int'. */
8849 type
= integer_type_node
;
8853 if (type
== NULL_TREE
)
8856 if (return_type
== return_dtor
)
8857 type
= void_type_node
;
8858 else if (return_type
== return_ctor
)
8859 type
= build_pointer_type (ctor_return_type
);
8860 else if (return_type
== return_conversion
)
8861 type
= ctor_return_type
;
8862 else if (current_class_type
8863 && IS_SIGNATURE (current_class_type
)
8864 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8865 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8869 type
= copy_node (opaque_type_node
);
8875 if (warn_return_type
8876 && return_type
== return_normal
)
8877 /* Save warning until we know what is really going on. */
8878 warn_about_return_type
= 1;
8880 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8881 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8882 else if (innermost_code
!= CALL_EXPR
|| pedantic
8883 || (warn_return_type
&& return_type
== return_normal
))
8885 if (innermost_code
== CALL_EXPR
)
8886 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
8888 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8891 type
= integer_type_node
;
8894 else if (return_type
== return_dtor
)
8896 error ("return type specification for destructor invalid");
8897 type
= void_type_node
;
8899 else if (return_type
== return_ctor
)
8901 error ("return type specification for constructor invalid");
8902 type
= build_pointer_type (ctor_return_type
);
8904 else if (return_type
== return_conversion
)
8906 if (comptypes (type
, ctor_return_type
, 1) == 0)
8907 cp_error ("operator `%T' declared to return `%T'",
8908 ctor_return_type
, type
);
8910 cp_pedwarn ("return type specified for `operator %T'",
8913 type
= ctor_return_type
;
8918 /* Now process the modifiers that were specified
8919 and check for invalid combinations. */
8921 /* Long double is a special combination. */
8923 if (RIDBIT_SETP (RID_LONG
, specbits
)
8924 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
8926 RIDBIT_RESET (RID_LONG
, specbits
);
8927 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
8928 TYPE_VOLATILE (type
));
8931 /* Check all other uses of type modifiers. */
8933 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8934 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8935 || RIDBIT_SETP (RID_LONG
, specbits
)
8936 || RIDBIT_SETP (RID_SHORT
, specbits
))
8940 if (TREE_CODE (type
) == REAL_TYPE
)
8941 error ("short, signed or unsigned invalid for `%s'", name
);
8942 else if (TREE_CODE (type
) != INTEGER_TYPE
)
8943 error ("long, short, signed or unsigned invalid for `%s'", name
);
8944 else if (RIDBIT_SETP (RID_LONG
, specbits
)
8945 && RIDBIT_SETP (RID_SHORT
, specbits
))
8946 error ("long and short specified together for `%s'", name
);
8947 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8948 || RIDBIT_SETP (RID_SHORT
, specbits
))
8950 error ("long or short specified with char for `%s'", name
);
8951 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8952 || RIDBIT_SETP (RID_SHORT
, specbits
))
8953 && TREE_CODE (type
) == REAL_TYPE
)
8954 error ("long or short specified with floating type for `%s'", name
);
8955 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8956 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
8957 error ("signed and unsigned given together for `%s'", name
);
8961 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
8963 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8965 if (flag_pedantic_errors
)
8970 /* Discard the type modifiers if they are invalid. */
8973 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
8974 RIDBIT_RESET (RID_SIGNED
, specbits
);
8975 RIDBIT_RESET (RID_LONG
, specbits
);
8976 RIDBIT_RESET (RID_SHORT
, specbits
);
8981 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
8982 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
8984 error ("complex invalid for `%s'", name
);
8985 RIDBIT_RESET (RID_COMPLEX
, specbits
);
8988 /* Decide whether an integer type is signed or not.
8989 Optionally treat bitfields as signed by default. */
8990 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8991 || (bitfield
&& ! flag_signed_bitfields
8992 && (explicit_int
|| defaulted_int
|| explicit_char
8993 /* A typedef for plain `int' without `signed'
8994 can be controlled just like plain `int'. */
8995 || ! (typedef_decl
!= NULL_TREE
8996 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
8997 && TREE_CODE (type
) != ENUMERAL_TYPE
8998 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
9001 type
= long_long_unsigned_type_node
;
9002 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9003 type
= long_unsigned_type_node
;
9004 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9005 type
= short_unsigned_type_node
;
9006 else if (type
== char_type_node
)
9007 type
= unsigned_char_type_node
;
9008 else if (typedef_decl
)
9009 type
= unsigned_type (type
);
9011 type
= unsigned_type_node
;
9013 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9014 && type
== char_type_node
)
9015 type
= signed_char_type_node
;
9017 type
= long_long_integer_type_node
;
9018 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9019 type
= long_integer_type_node
;
9020 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9021 type
= short_integer_type_node
;
9023 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
9025 /* If we just have "complex", it is equivalent to
9026 "complex double", but if any modifiers at all are specified it is
9027 the complex form of TYPE. E.g, "complex short" is
9028 "complex short int". */
9030 if (defaulted_int
&& ! longlong
9031 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
9032 || RIDBIT_SETP (RID_SHORT
, specbits
)
9033 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9034 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
9035 type
= complex_double_type_node
;
9036 else if (type
== integer_type_node
)
9037 type
= complex_integer_type_node
;
9038 else if (type
== float_type_node
)
9039 type
= complex_float_type_node
;
9040 else if (type
== double_type_node
)
9041 type
= complex_double_type_node
;
9042 else if (type
== long_double_type_node
)
9043 type
= complex_long_double_type_node
;
9045 type
= build_complex_type (type
);
9048 if (return_type
== return_conversion
9049 && (RIDBIT_SETP (RID_CONST
, specbits
)
9050 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9051 cp_error ("`operator %T' cannot be cv-qualified",
9054 /* Set CONSTP if this declaration is `const', whether by
9055 explicit specification or via a typedef.
9056 Likewise for VOLATILEP. */
9058 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9059 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9060 type
= build_type_variant (type
, 0, 0);
9062 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9063 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9064 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9065 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9066 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9068 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9069 staticp
= 1 + (decl_context
== FIELD
);
9071 if (virtualp
&& staticp
== 2)
9073 cp_error ("member `%D' cannot be declared both virtual and static",
9077 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9078 RIDBIT_RESET (RID_FRIEND
, specbits
);
9080 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9082 if (decl_context
== PARM
)
9084 error ("non-member `%s' cannot be declared `mutable'", name
);
9085 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9087 else if (friendp
|| decl_context
== TYPENAME
)
9089 error ("non-object member `%s' cannot be declared `mutable'", name
);
9090 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9094 /* Warn if two storage classes are given. Default to `auto'. */
9096 if (RIDBIT_ANY_SET (specbits
))
9098 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9099 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9100 if (decl_context
== PARM
&& nclasses
> 0)
9101 error ("storage class specifiers invalid in parameter declarations");
9102 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9104 if (decl_context
== PARM
)
9105 error ("typedef declaration invalid in parameter declaration");
9108 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9109 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9112 /* Give error if `virtual' is used outside of class declaration. */
9114 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9116 error ("virtual outside class declaration");
9119 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9121 error ("only members can be declared mutable");
9122 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9125 /* Static anonymous unions are dealt with here. */
9126 if (staticp
&& decl_context
== TYPENAME
9127 && TREE_CODE (declspecs
) == TREE_LIST
9128 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9129 decl_context
= FIELD
;
9131 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9132 is used in a signature member function declaration. */
9133 if (decl_context
== FIELD
9134 && IS_SIGNATURE (current_class_type
)
9135 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9139 error ("`const' specified for signature member function `%s'", name
);
9144 error ("`volatile' specified for signature member function `%s'",
9150 error ("`inline' specified for signature member function `%s'", name
);
9151 /* Later, we'll make signature member functions inline. */
9156 error ("`friend' declaration in signature definition");
9161 error ("`virtual' specified for signature member function `%s'",
9163 /* Later, we'll make signature member functions virtual. */
9168 /* Warn about storage classes that are invalid for certain
9169 kinds of declarations (parameters, typenames, etc.). */
9172 error ("multiple storage classes in declaration of `%s'", name
);
9173 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9175 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9176 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9177 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9179 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9181 else if (decl_context
== FIELD
9182 && ! IS_SIGNATURE (current_class_type
)
9183 /* C++ allows static class elements */
9184 && RIDBIT_SETP (RID_STATIC
, specbits
))
9185 /* C++ also allows inlines and signed and unsigned elements,
9186 but in those cases we don't come in here. */
9190 if (decl_context
== FIELD
)
9192 tree tmp
= NULL_TREE
;
9193 register int op
= 0;
9197 /* Avoid trying to get an operand off an identifier node. */
9198 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9201 tmp
= TREE_OPERAND (declarator
, 0);
9202 op
= IDENTIFIER_OPNAME_P (tmp
);
9204 error ("storage class specified for %s `%s'",
9205 IS_SIGNATURE (current_class_type
)
9207 ? "signature member operator"
9208 : "signature member function")
9209 : (op
? "member operator" : "field"),
9210 op
? operator_name_string (tmp
) : name
);
9213 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9214 ? "storage class specified for parameter `%s'"
9215 : "storage class specified for typename"), name
);
9216 RIDBIT_RESET (RID_REGISTER
, specbits
);
9217 RIDBIT_RESET (RID_AUTO
, specbits
);
9218 RIDBIT_RESET (RID_EXTERN
, specbits
);
9220 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9222 RIDBIT_RESET (RID_STATIC
, specbits
);
9227 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9229 if (toplevel_bindings_p ())
9231 /* It's common practice (and completely valid) to have a const
9232 be initialized and declared extern. */
9234 warning ("`%s' initialized and declared `extern'", name
);
9237 error ("`%s' has both `extern' and initializer", name
);
9239 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9240 && ! toplevel_bindings_p ())
9241 error ("nested function `%s' declared `extern'", name
);
9242 else if (toplevel_bindings_p ())
9244 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9245 error ("top-level declaration of `%s' specifies `auto'", name
);
9248 if (nclasses
> 0 && friendp
)
9249 error ("storage class specifiers invalid in friend function declarations");
9251 /* Now figure out the structure of the declarator proper.
9252 Descend through it, creating more complex types, until we reach
9253 the declared identifier (or NULL_TREE, in an absolute declarator). */
9255 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9256 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9258 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9259 an INDIRECT_REF (for *...),
9260 a CALL_EXPR (for ...(...)),
9261 an identifier (for the name being declared)
9262 or a null pointer (for the place in an absolute declarator
9263 where the name was omitted).
9264 For the last two cases, we have just exited the loop.
9266 For C++ it could also be
9267 a SCOPE_REF (for class :: ...). In this case, we have converted
9268 sensible names to types, and those are the values we use to
9269 qualify the member name.
9270 an ADDR_EXPR (for &...),
9271 a BIT_NOT_EXPR (for destructors)
9273 At this point, TYPE is the type of elements of an array,
9274 or for a function to return, or for a pointer to point to.
9275 After this sequence of ifs, TYPE is the type of the
9276 array or function or pointer, and DECLARATOR has had its
9277 outermost layer removed. */
9279 if (type
== error_mark_node
)
9281 if (TREE_CODE (declarator
) == SCOPE_REF
)
9282 declarator
= TREE_OPERAND (declarator
, 1);
9284 declarator
= TREE_OPERAND (declarator
, 0);
9287 if (quals
!= NULL_TREE
9288 && (declarator
== NULL_TREE
9289 || TREE_CODE (declarator
) != SCOPE_REF
))
9291 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9292 ctype
= TYPE_METHOD_BASETYPE (type
);
9293 if (ctype
!= NULL_TREE
)
9295 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9296 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9297 type
= TREE_TYPE (dummy
);
9301 switch (TREE_CODE (declarator
))
9305 register tree itype
= NULL_TREE
;
9306 register tree size
= TREE_OPERAND (declarator
, 1);
9307 /* The index is a signed object `sizetype' bits wide. */
9308 tree index_type
= signed_type (sizetype
);
9310 declarator
= TREE_OPERAND (declarator
, 0);
9312 /* Check for some types that there cannot be arrays of. */
9314 if (TREE_CODE (type
) == VOID_TYPE
)
9316 cp_error ("declaration of `%D' as array of voids", dname
);
9317 type
= error_mark_node
;
9320 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9322 cp_error ("declaration of `%D' as array of functions", dname
);
9323 type
= error_mark_node
;
9326 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9327 you can't have arrays of references. If we allowed them,
9328 then we'd be saying x[i] is valid for an array x, but
9329 then you'd have to ask: what does `*(x + i)' mean? */
9330 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9332 if (decl_context
== TYPENAME
)
9333 cp_error ("cannot make arrays of references");
9335 cp_error ("declaration of `%D' as array of references",
9337 type
= error_mark_node
;
9340 if (TREE_CODE (type
) == OFFSET_TYPE
)
9342 cp_error ("declaration of `%D' as array of data members",
9344 type
= error_mark_node
;
9347 if (TREE_CODE (type
) == METHOD_TYPE
)
9349 cp_error ("declaration of `%D' as array of function members",
9351 type
= error_mark_node
;
9354 if (size
== error_mark_node
)
9355 type
= error_mark_node
;
9357 if (type
== error_mark_node
)
9362 /* Must suspend_momentary here because the index
9363 type may need to live until the end of the function.
9364 For example, it is used in the declaration of a
9365 variable which requires destructing at the end of
9366 the function; then build_vec_delete will need this
9368 int yes
= suspend_momentary ();
9369 /* Might be a cast. */
9370 if (TREE_CODE (size
) == NOP_EXPR
9371 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9372 size
= TREE_OPERAND (size
, 0);
9374 /* If this involves a template parameter, it'll be
9375 constant, but we don't know what the value is yet. */
9376 if (processing_template_decl
)
9378 itype
= make_node (INTEGER_TYPE
);
9379 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9380 TYPE_MAX_VALUE (itype
) = build_min
9381 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9382 goto dont_grok_size
;
9385 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9386 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9388 cp_error ("size of array `%D' has non-integer type",
9390 size
= integer_one_node
;
9392 if (TREE_READONLY_DECL_P (size
))
9393 size
= decl_constant_value (size
);
9394 if (pedantic
&& integer_zerop (size
))
9395 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9396 if (TREE_CONSTANT (size
))
9398 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9399 int old_pedantic
= pedantic
;
9400 pedantic
= flag_pedantic_errors
= 1;
9401 /* Always give overflow errors on array subscripts. */
9402 constant_expression_warning (size
);
9403 pedantic
= old_pedantic
;
9404 flag_pedantic_errors
= old_flag_pedantic_errors
;
9405 if (INT_CST_LT (size
, integer_zero_node
))
9407 cp_error ("size of array `%D' is negative", dname
);
9408 size
= integer_one_node
;
9416 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9419 cp_pedwarn ("ANSI C++ forbids variable-size array");
9424 = fold (build_binary_op (MINUS_EXPR
,
9425 cp_convert (index_type
, size
),
9426 cp_convert (index_type
,
9427 integer_one_node
), 1));
9428 if (! TREE_CONSTANT (itype
))
9429 itype
= variable_size (itype
);
9430 else if (TREE_OVERFLOW (itype
))
9432 error ("overflow in array dimension");
9433 TREE_OVERFLOW (itype
) = 0;
9436 /* If we're a parm, we need to have a permanent type so
9437 mangling checks for re-use will work right. If both the
9438 element and index types are permanent, the array type
9440 if (decl_context
== PARM
9441 && allocation_temporary_p () && TREE_PERMANENT (type
))
9443 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9444 itype
= build_index_type (itype
);
9448 itype
= build_index_type (itype
);
9451 resume_momentary (yes
);
9454 /* Build the array type itself, then merge any constancy or
9455 volatility into the target type. We must do it in this order
9456 to ensure that the TYPE_MAIN_VARIANT field of the array type
9457 is set correctly. */
9459 type
= build_cplus_array_type (type
, itype
);
9460 if (constp
|| volatilep
)
9461 type
= cp_build_type_variant (type
, constp
, volatilep
);
9471 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9472 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9474 /* Declaring a function type.
9475 Make sure we have a valid type for the function to return. */
9477 /* Is this an error? Should they be merged into TYPE here? */
9478 if (pedantic
&& (constp
|| volatilep
))
9479 pedwarn ("function declared to return const or volatile result");
9481 /* Merge any constancy or volatility into the function return
9484 if (constp
|| volatilep
)
9486 type
= cp_build_type_variant (type
, constp
, volatilep
);
9487 if (IS_AGGR_TYPE (type
))
9488 build_pointer_type (type
);
9494 /* Warn about some types functions can't return. */
9496 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9498 error ("`%s' declared as function returning a function", name
);
9499 type
= integer_type_node
;
9501 if (TREE_CODE (type
) == ARRAY_TYPE
)
9503 error ("`%s' declared as function returning an array", name
);
9504 type
= integer_type_node
;
9507 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9508 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9510 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9513 /* Pick up type qualifiers which should be applied to `this'. */
9514 quals
= TREE_OPERAND (declarator
, 2);
9516 /* Pick up the exception specifications. */
9517 raises
= TREE_TYPE (declarator
);
9519 /* Say it's a definition only for the CALL_EXPR
9520 closest to the identifier. */
9523 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9524 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9525 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9527 if (ctype
== NULL_TREE
9528 && decl_context
== FIELD
9530 && (friendp
== 0 || dname
== current_class_name
))
9531 ctype
= current_class_type
;
9533 if (ctype
&& return_type
== return_conversion
)
9534 TYPE_HAS_CONVERSION (ctype
) = 1;
9535 if (ctype
&& constructor_name (ctype
) == dname
)
9537 /* We are within a class's scope. If our declarator name
9538 is the same as the class name, and we are defining
9539 a function, then it is a constructor/destructor, and
9540 therefore returns a void type. */
9542 if (flags
== DTOR_FLAG
)
9544 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9545 not be declared const or volatile. A destructor
9546 may not be static. */
9548 error ("destructor cannot be static member function");
9551 error ("destructors cannot be declared `const' or `volatile'");
9552 return void_type_node
;
9554 if (decl_context
== FIELD
)
9556 if (! member_function_or_else (ctype
, current_class_type
,
9557 "destructor for alien class `%s' cannot be a member"))
9558 return void_type_node
;
9561 else /* It's a constructor. */
9565 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9566 not be declared const or volatile. A constructor may
9567 not be virtual. A constructor may not be static. */
9569 error ("constructor cannot be static member function");
9572 pedwarn ("constructors cannot be declared virtual");
9577 error ("constructors cannot be declared `const' or `volatile'");
9578 return void_type_node
;
9581 RID_BIT_TYPE tmp_bits
;
9582 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9583 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9584 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9585 if (RIDBIT_ANY_SET (tmp_bits
))
9586 error ("return value type specifier for constructor ignored");
9588 type
= build_pointer_type (ctype
);
9589 if (decl_context
== FIELD
9590 && IS_SIGNATURE (current_class_type
))
9592 error ("constructor not allowed in signature");
9593 return void_type_node
;
9595 else if (decl_context
== FIELD
)
9597 if (! member_function_or_else (ctype
, current_class_type
,
9598 "constructor for alien class `%s' cannot be member"))
9599 return void_type_node
;
9600 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9601 if (return_type
!= return_ctor
)
9605 if (decl_context
== FIELD
)
9611 error ("can't initialize friend function `%s'", name
);
9614 /* Cannot be both friend and virtual. */
9615 error ("virtual functions cannot be friends");
9616 RIDBIT_RESET (RID_FRIEND
, specbits
);
9619 if (decl_context
== NORMAL
)
9620 error ("friend declaration not in class definition");
9621 if (current_function_decl
&& funcdef_flag
)
9622 cp_error ("can't define friend function `%s' in a local class definition",
9626 /* Construct the function type and go to the next
9627 inner layer of declarator. */
9629 declarator
= TREE_OPERAND (declarator
, 0);
9631 /* FIXME: This is where default args should be fully
9634 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9638 /* Get past destructors, etc.
9639 We know we have one because FLAGS will be non-zero.
9641 Complain about improper parameter lists here. */
9642 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9644 declarator
= TREE_OPERAND (declarator
, 0);
9646 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9647 arg_types
= void_list_node
;
9648 else if (arg_types
== NULL_TREE
9649 || arg_types
!= void_list_node
)
9651 error ("destructors cannot be specified with parameters");
9652 arg_types
= void_list_node
;
9657 /* ANSI says that `const int foo ();'
9658 does not make the function foo const. */
9659 type
= build_function_type (type
, arg_types
);
9663 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9664 if (TREE_PURPOSE (t
)
9665 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9667 add_defarg_fn (type
);
9676 /* Filter out pointers-to-references and references-to-references.
9677 We can get these if a TYPE_DECL is used. */
9679 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9681 error ("cannot declare %s to references",
9682 TREE_CODE (declarator
) == ADDR_EXPR
9683 ? "references" : "pointers");
9684 declarator
= TREE_OPERAND (declarator
, 0);
9688 if (TREE_CODE (type
) == OFFSET_TYPE
9689 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9690 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9692 cp_error ("cannot declare pointer to `%#T' member",
9694 type
= TREE_TYPE (type
);
9697 /* Merge any constancy or volatility into the target type
9700 if (constp
|| volatilep
)
9702 /* A const or volatile signature pointer/reference is
9703 pointing to a const or volatile object, i.e., the
9704 `optr' is const or volatile, respectively, not the
9705 signature pointer/reference itself. */
9706 if (! IS_SIGNATURE (type
))
9708 type
= cp_build_type_variant (type
, constp
, volatilep
);
9709 if (IS_AGGR_TYPE (type
))
9710 build_pointer_type (type
);
9716 if (IS_SIGNATURE (type
))
9718 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9720 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9721 && TYPE_SIZE (type
))
9722 cp_warning ("empty signature `%T' used in signature reference declaration",
9725 type
= build_signature_reference_type (type
,
9728 sorry ("signature reference");
9734 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9735 && TYPE_SIZE (type
))
9736 cp_warning ("empty signature `%T' used in signature pointer declaration",
9738 type
= build_signature_pointer_type (type
,
9744 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9746 if (TREE_CODE (type
) == VOID_TYPE
)
9747 error ("invalid type: `void &'");
9749 type
= build_reference_type (type
);
9751 else if (TREE_CODE (type
) == METHOD_TYPE
)
9753 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9756 type
= build_pointer_type (type
);
9758 /* Process a list of type modifier keywords (such as
9759 const or volatile) that were given inside the `*' or `&'. */
9761 if (TREE_TYPE (declarator
))
9763 register tree typemodlist
;
9765 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9766 typemodlist
= TREE_CHAIN (typemodlist
))
9768 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9770 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9775 error ("invalid type modifier within %s declarator",
9776 TREE_CODE (declarator
) == ADDR_EXPR
9777 ? "reference" : "pointer");
9781 pedwarn ("duplicate `const'");
9783 pedwarn ("duplicate `volatile'");
9784 if (TREE_CODE (declarator
) == ADDR_EXPR
9785 && (constp
|| volatilep
))
9788 pedwarn ("discarding `const' applied to a reference");
9790 pedwarn ("discarding `volatile' applied to a reference");
9791 constp
= volatilep
= 0;
9794 declarator
= TREE_OPERAND (declarator
, 0);
9800 /* We have converted type names to NULL_TREE if the
9801 name was bogus, or to a _TYPE node, if not.
9803 The variable CTYPE holds the type we will ultimately
9804 resolve to. The code here just needs to build
9805 up appropriate member types. */
9806 tree sname
= TREE_OPERAND (declarator
, 1);
9809 /* Destructors can have their visibilities changed as well. */
9810 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9811 sname
= TREE_OPERAND (sname
, 0);
9813 if (TREE_COMPLEXITY (declarator
) == 0)
9814 /* This needs to be here, in case we are called
9815 multiple times. */ ;
9816 else if (TREE_COMPLEXITY (declarator
) == -1)
9817 /* Namespace member. */
9818 pop_decl_namespace ();
9819 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9820 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9821 else if (! IS_AGGR_TYPE_CODE
9822 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9824 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9826 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9827 that refer to ctype. They couldn't be resolved earlier
9828 because we hadn't pushed into the class yet.
9829 Example: resolve 'B<T>::type' in
9830 'B<typename B<T>::type> B<T>::f () { }'. */
9831 if (current_template_parms
9832 && uses_template_parms (type
)
9833 && uses_template_parms (current_class_type
))
9835 tree args
= current_template_args ();
9836 type
= tsubst (type
, args
, NULL_TREE
);
9839 /* This pop_nested_class corresponds to the
9840 push_nested_class used to push into class scope for
9841 parsing the argument list of a function decl, in
9843 pop_nested_class (1);
9844 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9847 my_friendly_abort (16);
9849 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9851 /* We had a reference to a global decl, or
9852 perhaps we were given a non-aggregate typedef,
9853 in which case we cleared this out, and should just
9854 keep going as though it wasn't there. */
9858 ctype
= TREE_OPERAND (declarator
, 0);
9861 while (t
!= NULL_TREE
)
9863 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9864 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9865 template_count
+= 1;
9866 t
= TYPE_MAIN_DECL (t
);
9867 if (DECL_LANG_SPECIFIC (t
))
9868 t
= DECL_CLASS_CONTEXT (t
);
9873 if (sname
== NULL_TREE
)
9876 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9878 /* This is the `standard' use of the scoping operator:
9879 basetype :: member . */
9881 if (ctype
== current_class_type
)
9887 Is this ill-formed? */
9890 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9893 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9895 if (current_class_type
== NULL_TREE
9897 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9898 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9901 cp_error ("cannot declare member function `%T::%s' within `%T'",
9902 ctype
, name
, current_class_type
);
9903 return void_type_node
;
9906 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9907 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9909 /* Have to move this code elsewhere in this function.
9910 this code is used for i.e., typedef int A::M; M *pm;
9912 It is? How? jason 10/2/94 */
9914 if (current_class_type
)
9916 cp_error ("cannot declare member `%T::%s' within `%T'",
9917 ctype
, name
, current_class_type
);
9918 return void_type_node
;
9920 type
= build_offset_type (ctype
, type
);
9922 else if (uses_template_parms (ctype
))
9924 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9926 = build_cplus_method_type (build_type_variant (ctype
,
9930 TYPE_ARG_TYPES (type
));
9934 cp_error ("structure `%T' not yet defined", ctype
);
9935 return error_mark_node
;
9940 else if (TREE_CODE (sname
) == SCOPE_REF
)
9941 my_friendly_abort (17);
9945 declarator
= TREE_OPERAND (declarator
, 1);
9946 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9947 /* In this case, we will deal with it later. */
9951 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9952 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9954 type
= build_offset_type (ctype
, type
);
9961 declarator
= TREE_OPERAND (declarator
, 0);
9967 declarator
= NULL_TREE
;
9971 declarator
= NULL_TREE
;
9975 my_friendly_abort (158);
9981 error ("only constructors can be declared `explicit'");
9985 /* Now TYPE has the actual type. */
9987 /* If this is declaring a typedef name, return a TYPE_DECL. */
9989 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9993 error ("const `%s' cannot be declared `mutable'", name
);
9994 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9998 error ("static `%s' cannot be declared `mutable'", name
);
9999 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10003 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
10007 /* Note that the grammar rejects storage classes
10008 in typenames, fields or parameters. */
10009 if (constp
|| volatilep
)
10010 type
= cp_build_type_variant (type
, constp
, volatilep
);
10011 if (current_lang_name
== lang_name_java
)
10012 TYPE_FOR_JAVA (type
) = 1;
10014 if (decl_context
== FIELD
)
10016 if (declarator
== current_class_name
)
10017 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
10019 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
10020 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
10021 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
10025 /* Make sure this typedef lives as long as its type,
10026 since it might be used as a template parameter. */
10027 if (type
!= error_mark_node
)
10028 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10029 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10030 if (type
!= error_mark_node
)
10034 /* If the user declares "struct {...} foo" then `foo' will have
10035 an anonymous name. Fill that name in now. Nothing can
10036 refer to it, so nothing needs know about the name change.
10037 The TYPE_NAME field was filled in by build_struct_xref. */
10038 if (type
!= error_mark_node
10039 && TYPE_NAME (type
)
10040 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10041 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10043 /* For anonymous structs that are cv-qualified, need to use
10044 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10045 type not referenced after this block, don't bother
10046 resetting type to original type, ie. TREE_TYPE (decl). */
10047 type
= TYPE_MAIN_VARIANT (type
);
10049 /* Replace the anonymous name with the real name everywhere. */
10050 lookup_tag_reverse (type
, declarator
);
10051 TYPE_NAME (type
) = decl
;
10053 if (TYPE_LANG_SPECIFIC (type
))
10054 TYPE_WAS_ANONYMOUS (type
) = 1;
10056 /* XXX Temporarily set the scope.
10057 When returning, start_decl expects it as NULL_TREE,
10058 and will then then set it using pushdecl. */
10059 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10060 if (current_class_type
)
10061 DECL_CONTEXT (decl
) = current_class_type
;
10063 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10065 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10066 DECL_ASSEMBLER_NAME (decl
)
10067 = get_identifier (build_overload_name (type
, 1, 1));
10068 DECL_CONTEXT (decl
) = NULL_TREE
;
10070 /* FIXME remangle member functions; member functions of a
10071 type with external linkage have external linkage. */
10074 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10076 cp_error_at ("typedef name may not be class-qualified", decl
);
10081 if (ctype
== NULL_TREE
)
10083 if (TREE_CODE (type
) != METHOD_TYPE
)
10084 cp_error_at ("invalid type qualifier for non-method type", decl
);
10086 ctype
= TYPE_METHOD_BASETYPE (type
);
10088 if (ctype
!= NULL_TREE
)
10089 grok_method_quals (ctype
, decl
, quals
);
10092 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10093 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10094 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10096 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10098 error ("non-object member `%s' cannot be declared mutable", name
);
10101 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10102 inlinep
, friendp
, raises
!= NULL_TREE
);
10105 error ("typedef declaration includes an initializer");
10110 /* Detect the case of an array type of unspecified size
10111 which came, as such, direct from a typedef name.
10112 We must copy the type, so that each identifier gets
10113 a distinct type, so that each identifier's size can be
10114 controlled separately by its own initializer. */
10116 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10117 && TYPE_DOMAIN (type
) == NULL_TREE
)
10119 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10122 /* If this is a type name (such as, in a cast or sizeof),
10123 compute the type and return it now. */
10125 if (decl_context
== TYPENAME
)
10127 /* Note that the grammar rejects storage classes
10128 in typenames, fields or parameters. */
10129 if (constp
|| volatilep
)
10131 if (IS_SIGNATURE (type
))
10132 error ("`const' or `volatile' specified with signature type");
10134 type
= cp_build_type_variant (type
, constp
, volatilep
);
10137 /* Special case: "friend class foo" looks like a TYPENAME context. */
10142 cp_error ("`volatile' specified for friend class declaration");
10147 cp_error ("`inline' specified for friend class declaration");
10151 /* Only try to do this stuff if we didn't already give up. */
10152 if (type
!= integer_type_node
)
10154 /* A friendly class? */
10155 if (current_class_type
)
10156 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10158 error ("trying to make class `%s' a friend of global scope",
10159 TYPE_NAME_STRING (type
));
10160 type
= void_type_node
;
10165 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10166 if (ctype
== NULL_TREE
)
10168 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10169 ctype
= TYPE_METHOD_BASETYPE (type
);
10171 grok_method_quals (ctype
, dummy
, quals
);
10172 type
= TREE_TYPE (dummy
);
10177 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10178 && decl_context
!= CATCHPARM
10179 && TREE_CODE (type
) != UNION_TYPE
10182 cp_error ("abstract declarator `%T' used as declaration", type
);
10183 declarator
= make_anon_name ();
10186 /* `void' at top level (not within pointer)
10187 is allowed only in typedefs or type names.
10188 We don't complain about parms either, but that is because
10189 a better error message can be made later. */
10191 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10194 error ("unnamed variable or field declared void");
10195 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10197 if (IDENTIFIER_OPNAME_P (declarator
))
10198 my_friendly_abort (356);
10200 error ("variable or field `%s' declared void", name
);
10203 error ("variable or field declared void");
10204 type
= integer_type_node
;
10207 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10208 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10211 register tree decl
;
10213 if (decl_context
== PARM
)
10215 if (ctype
|| in_namespace
)
10216 error ("cannot use `::' in parameter declaration");
10218 /* A parameter declared as an array of T is really a pointer to T.
10219 One declared as a function is really a pointer to a function.
10220 One declared as a member is really a pointer to member. */
10222 if (TREE_CODE (type
) == ARRAY_TYPE
)
10224 /* Transfer const-ness of array into that of type pointed to. */
10225 type
= build_pointer_type
10226 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10227 volatilep
= constp
= 0;
10229 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10230 type
= build_pointer_type (type
);
10231 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10232 type
= build_pointer_type (type
);
10233 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10235 error ("declaration of `%s' as void", name
);
10239 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10241 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10242 inlinep
, friendp
, raises
!= NULL_TREE
);
10243 if (current_class_type
10244 && IS_SIGNATURE (current_class_type
))
10247 error ("parameter of signature member function declared `inline'");
10248 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10249 error ("parameter of signature member function declared `auto'");
10250 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10251 error ("parameter of signature member function declared `register'");
10254 /* Compute the type actually passed in the parmlist,
10255 for the case where there is no prototype.
10256 (For example, shorts and chars are passed as ints.)
10257 When there is a prototype, this is overridden later. */
10259 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10261 else if (decl_context
== FIELD
)
10263 if (type
== error_mark_node
)
10265 /* Happens when declaring arrays of sizes which
10266 are error_mark_node, for example. */
10269 else if (in_namespace
)
10271 /* Something like struct S { int N::j; }; */
10272 cp_error ("invalid use of `::'");
10275 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10278 tree function_context
;
10280 /* We catch the others as conflicts with the builtin
10282 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10284 cp_error ("function `%D' cannot be declared friend",
10291 if (ctype
== NULL_TREE
)
10292 ctype
= current_class_type
;
10294 if (ctype
== NULL_TREE
)
10296 cp_error ("can't make `%D' into a method -- not in a class",
10298 return void_type_node
;
10301 /* ``A union may [ ... ] not [ have ] virtual functions.''
10303 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10305 cp_error ("function `%D' declared virtual inside a union",
10307 return void_type_node
;
10310 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10311 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10312 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10313 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10317 cp_error ("`%D' cannot be declared virtual, since it is always static",
10322 else if (staticp
< 2)
10323 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10324 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10327 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10328 function_context
= (ctype
!= NULL_TREE
) ?
10329 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10330 publicp
= (! friendp
|| ! staticp
)
10331 && function_context
== NULL_TREE
;
10332 decl
= grokfndecl (ctype
, type
,
10333 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10334 ? declarator
: dname
,
10336 virtualp
, flags
, quals
, raises
, attrlist
,
10337 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10338 funcdef_flag
, template_count
, in_namespace
);
10339 if (decl
== NULL_TREE
|| decl
== error_mark_node
)
10342 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10343 /* The decl and setting of decl_machine_attr is also turned off. */
10344 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10347 if (explicitp
== 2)
10348 DECL_NONCONVERTING_P (decl
) = 1;
10350 else if (TREE_CODE (type
) == METHOD_TYPE
)
10352 /* We only get here for friend declarations of
10353 members of other classes. */
10354 /* All method decls are public, so tell grokfndecl to set
10355 TREE_PUBLIC, also. */
10356 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10357 virtualp
, flags
, quals
, raises
, attrlist
,
10358 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10359 template_count
, in_namespace
);
10360 if (decl
== NULL_TREE
)
10363 else if (!staticp
&& ! processing_template_decl
10364 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10365 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10368 cp_error ("field `%D' has incomplete type", declarator
);
10370 cp_error ("name `%T' has incomplete type", type
);
10372 /* If we're instantiating a template, tell them which
10373 instantiation made the field's type be incomplete. */
10374 if (current_class_type
10375 && TYPE_NAME (current_class_type
)
10376 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10377 && declspecs
&& TREE_VALUE (declspecs
)
10378 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10379 cp_error (" in instantiation of template `%T'",
10380 current_class_type
);
10382 type
= error_mark_node
;
10389 error ("`%s' is neither function nor method; cannot be declared friend",
10390 IDENTIFIER_POINTER (declarator
));
10398 /* Friends are treated specially. */
10399 if (ctype
== current_class_type
)
10400 warning ("member functions are implicitly friends of their class");
10403 tree t
= NULL_TREE
;
10404 if (decl
&& DECL_NAME (decl
))
10406 if (template_class_depth (current_class_type
) == 0)
10409 = check_explicit_specialization
10411 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10412 if (decl
== error_mark_node
)
10413 return error_mark_node
;
10416 t
= do_friend (ctype
, declarator
, decl
,
10417 last_function_parms
, flags
, quals
,
10420 if (t
&& funcdef_flag
)
10423 return void_type_node
;
10427 /* Structure field. It may not be a function, except for C++ */
10429 if (decl
== NULL_TREE
)
10435 /* An attempt is being made to initialize a non-static
10436 member. But, from [class.mem]:
10438 4 A member-declarator can contain a
10439 constant-initializer only if it declares a static
10440 member (_class.static_) of integral or enumeration
10441 type, see _class.static.data_.
10443 This used to be relatively common practice, but
10444 the rest of the compiler does not correctly
10445 handle the initialization unless the member is
10446 static so we make it static below. */
10447 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10448 constp
? "const member" : "member",
10450 cp_pedwarn ("making `%D' static", declarator
);
10454 /* Motion 10 at San Diego: If a static const integral data
10455 member is initialized with an integral constant
10456 expression, the initializer may appear either in the
10457 declaration (within the class), or in the definition,
10458 but not both. If it appears in the class, the member is
10459 a member constant. The file-scope definition is always
10461 if (CLASS_TYPE_P (type
)
10462 || TREE_CODE (type
) == REFERENCE_TYPE
)
10464 cp_error ("in-class initialization of static data member of non-integral type `%T'",
10466 /* If we just return the declaration, crashes will
10467 sometimes occur. We therefore return
10468 void_type_node, as if this was a friend
10469 declaration, to cause callers to completely
10470 ignore this declaration. */
10471 return void_type_node
;
10474 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10476 else if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10477 && !uses_template_parms (type
))
10478 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10483 /* ANSI C++ Apr '95 wp 9.2 */
10484 if (declarator
== current_class_name
)
10485 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10488 /* C++ allows static class members.
10489 All other work for this is done by grokfield.
10490 This VAR_DCL is built by build_lang_field_decl.
10491 All other VAR_DECLs are built by build_decl. */
10492 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10493 TREE_STATIC (decl
) = 1;
10494 /* In class context, 'static' means public access. */
10495 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10499 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10500 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10502 DECL_MUTABLE_P (decl
) = 1;
10503 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10507 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10508 inlinep
, friendp
, raises
!= NULL_TREE
);
10511 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10513 tree original_name
;
10519 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10520 original_name
= dname
;
10522 original_name
= declarator
;
10524 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10525 error ("storage class `auto' invalid for function `%s'", name
);
10526 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10527 error ("storage class `register' invalid for function `%s'", name
);
10529 /* Function declaration not at top level.
10530 Storage classes other than `extern' are not allowed
10531 and `extern' makes no difference. */
10532 if (! toplevel_bindings_p ()
10533 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10534 || RIDBIT_SETP (RID_INLINE
, specbits
))
10537 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10538 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10540 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10543 if (ctype
== NULL_TREE
)
10547 error ("virtual non-class function `%s'", name
);
10551 if (current_lang_name
== lang_name_cplusplus
10552 && ! processing_template_decl
10553 && ! MAIN_NAME_P (original_name
)
10554 && ! (IDENTIFIER_LENGTH (original_name
) > 10
10555 && IDENTIFIER_POINTER (original_name
)[0] == '_'
10556 && IDENTIFIER_POINTER (original_name
)[1] == '_'
10557 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
10558 /* Plain overloading: will not be grok'd by grokclassfn. */
10559 if (name_mangling_version
< 1
10560 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10561 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
10563 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10564 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10565 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10567 /* Record presence of `static'. */
10568 publicp
= (ctype
!= NULL_TREE
10569 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10570 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10572 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10573 virtualp
, flags
, quals
, raises
, attrlist
,
10575 publicp
, inlinep
, funcdef_flag
,
10576 template_count
, in_namespace
);
10577 if (decl
== NULL_TREE
)
10580 /* Among other times, could occur from check_explicit_specialization
10581 returning an error_mark_node. */
10582 if (decl
== error_mark_node
)
10583 return error_mark_node
;
10585 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
10586 && (! DECL_USE_TEMPLATE (decl
) ||
10587 name_mangling_version
< 1))
10588 DECL_ASSEMBLER_NAME (decl
) = declarator
;
10592 int illegal_static
= 0;
10594 /* Don't allow a static member function in a class, and forbid
10595 declaring main to be static. */
10596 if (TREE_CODE (type
) == METHOD_TYPE
)
10598 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10599 illegal_static
= 1;
10601 else if (current_function_decl
)
10603 /* FIXME need arm citation */
10604 error ("cannot declare static function inside another function");
10605 illegal_static
= 1;
10608 if (illegal_static
)
10611 RIDBIT_RESET (RID_STATIC
, specbits
);
10617 /* It's a variable. */
10619 if (decl_context
== CATCHPARM
)
10624 error ("cannot use `::' in parameter declaration");
10627 /* A parameter declared as an array of T is really a pointer to T.
10628 One declared as a function is really a pointer to a function.
10629 One declared as a member is really a pointer to member. */
10631 if (TREE_CODE (type
) == ARRAY_TYPE
)
10633 /* Transfer const-ness of array into that of type
10635 type
= build_pointer_type
10636 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10637 volatilep
= constp
= 0;
10639 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10640 type
= build_pointer_type (type
);
10641 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10642 type
= build_pointer_type (type
);
10645 /* An uninitialized decl with `extern' is a reference. */
10646 decl
= grokvardecl (type
, declarator
, &specbits
,
10647 initialized
, constp
, in_namespace
);
10648 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10649 inlinep
, friendp
, raises
!= NULL_TREE
);
10653 DECL_CONTEXT (decl
) = ctype
;
10656 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10658 RIDBIT_RESET (RID_STATIC
, specbits
);
10660 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10662 cp_error ("static member `%D' declared `register'", decl
);
10663 RIDBIT_RESET (RID_REGISTER
, specbits
);
10665 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10667 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10669 RIDBIT_RESET (RID_EXTERN
, specbits
);
10674 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10676 error ("`%s' cannot be declared mutable", name
);
10679 /* Record `register' declaration for warnings on &
10680 and in case doing stupid register allocation. */
10682 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10683 DECL_REGISTER (decl
) = 1;
10685 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10686 DECL_THIS_EXTERN (decl
) = 1;
10688 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10689 DECL_THIS_STATIC (decl
) = 1;
10691 /* Record constancy and volatility. */
10694 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10697 TREE_SIDE_EFFECTS (decl
) = 1;
10698 TREE_THIS_VOLATILE (decl
) = 1;
10705 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10706 An empty exprlist is a parmlist. An exprlist which
10707 contains only identifiers at the global level
10708 is a parmlist. Otherwise, it is an exprlist. */
10711 parmlist_is_exprlist (exprs
)
10714 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10717 if (toplevel_bindings_p ())
10719 /* At the global level, if these are all identifiers,
10720 then it is a parmlist. */
10723 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10725 exprs
= TREE_CHAIN (exprs
);
10732 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10735 C++: also subroutine of `start_function'. */
10738 require_complete_types_for_parms (parms
)
10741 if (processing_template_decl
)
10746 tree type
= TREE_TYPE (parms
);
10747 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10749 if (DECL_NAME (parms
))
10750 error ("parameter `%s' has incomplete type",
10751 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10753 error ("parameter has incomplete type");
10754 TREE_TYPE (parms
) = error_mark_node
;
10757 /* If the arg types are incomplete in a declaration,
10758 they must include undefined tags.
10759 These tags can never be defined in the scope of the declaration,
10760 so the types can never be completed,
10761 and no call can be compiled successfully. */
10762 /* This is not the right behavior for C++, but not having
10763 it is also probably wrong. */
10766 /* Now warn if is a pointer to an incomplete type. */
10767 while (TREE_CODE (type
) == POINTER_TYPE
10768 || TREE_CODE (type
) == REFERENCE_TYPE
)
10769 type
= TREE_TYPE (type
);
10770 type
= TYPE_MAIN_VARIANT (type
);
10771 if (TYPE_SIZE (type
) == NULL_TREE
)
10773 if (DECL_NAME (parm
) != NULL_TREE
)
10774 warning ("parameter `%s' points to incomplete type",
10775 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10777 warning ("parameter points to incomplete type");
10781 parms
= TREE_CHAIN (parms
);
10785 /* Decode the list of parameter types for a function type.
10786 Given the list of things declared inside the parens,
10787 return a list of types.
10789 The list we receive can have three kinds of elements:
10790 an IDENTIFIER_NODE for names given without types,
10791 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10792 or void_type_node, to mark the end of an argument list
10793 when additional arguments are not permitted (... was not used).
10795 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10796 a mere declaration. A nonempty identifier-list gets an error message
10797 when FUNCDEF_FLAG is zero.
10798 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10799 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10801 If all elements of the input list contain types,
10802 we return a list of the types.
10803 If all elements contain no type (except perhaps a void_type_node
10804 at the end), we return a null list.
10805 If some have types and some do not, it is an error, and we
10806 return a null list.
10808 Also set last_function_parms to either
10809 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10810 A list of names is converted to a chain of PARM_DECLs
10811 by store_parm_decls so that ultimately it is always a chain of decls.
10813 Note that in C++, parameters can take default values. These default
10814 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10815 an error to specify default values which are followed by parameters
10816 that have no default values, or an ELLIPSES. For simplicities sake,
10817 only parameters which are specified with their types can take on
10821 grokparms (first_parm
, funcdef_flag
)
10825 tree result
= NULL_TREE
;
10826 tree decls
= NULL_TREE
;
10828 if (first_parm
!= NULL_TREE
10829 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10831 if (! funcdef_flag
)
10832 pedwarn ("parameter names (without types) in function declaration");
10833 last_function_parms
= first_parm
;
10836 else if (first_parm
!= NULL_TREE
10837 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10838 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10839 my_friendly_abort (145);
10842 /* Types were specified. This is a list of declarators
10843 each represented as a TREE_LIST node. */
10844 register tree parm
, chain
;
10845 int any_init
= 0, any_error
= 0;
10847 if (first_parm
!= NULL_TREE
)
10849 tree last_result
= NULL_TREE
;
10850 tree last_decl
= NULL_TREE
;
10852 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10854 tree type
= NULL_TREE
, list_node
= parm
;
10855 register tree decl
= TREE_VALUE (parm
);
10856 tree init
= TREE_PURPOSE (parm
);
10858 chain
= TREE_CHAIN (parm
);
10859 /* @@ weak defense against parse errors. */
10860 if (TREE_CODE (decl
) != VOID_TYPE
10861 && TREE_CODE (decl
) != TREE_LIST
)
10863 /* Give various messages as the need arises. */
10864 if (TREE_CODE (decl
) == STRING_CST
)
10865 cp_error ("invalid string constant `%E'", decl
);
10866 else if (TREE_CODE (decl
) == INTEGER_CST
)
10867 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10871 if (TREE_CODE (decl
) != VOID_TYPE
)
10873 decl
= grokdeclarator (TREE_VALUE (decl
),
10874 TREE_PURPOSE (decl
),
10875 PARM
, init
!= NULL_TREE
,
10879 type
= TREE_TYPE (decl
);
10880 if (TREE_CODE (type
) == VOID_TYPE
)
10881 decl
= void_type_node
;
10882 else if (TREE_CODE (type
) == METHOD_TYPE
)
10884 if (DECL_NAME (decl
))
10885 /* Cannot use the decl here because
10886 we don't have DECL_CONTEXT set up yet. */
10887 cp_error ("parameter `%D' invalidly declared method type",
10890 error ("parameter invalidly declared method type");
10891 type
= build_pointer_type (type
);
10892 TREE_TYPE (decl
) = type
;
10894 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10896 if (DECL_NAME (decl
))
10897 cp_error ("parameter `%D' invalidly declared offset type",
10900 error ("parameter invalidly declared offset type");
10901 type
= build_pointer_type (type
);
10902 TREE_TYPE (decl
) = type
;
10904 else if (TREE_CODE (type
) == RECORD_TYPE
10905 && TYPE_LANG_SPECIFIC (type
)
10906 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10908 abstract_virtuals_error (decl
, type
);
10909 any_error
= 1; /* Seems like a good idea. */
10911 else if (TREE_CODE (type
) == RECORD_TYPE
10912 && TYPE_LANG_SPECIFIC (type
)
10913 && IS_SIGNATURE (type
))
10915 signature_error (decl
, type
);
10916 any_error
= 1; /* Seems like a good idea. */
10918 else if (POINTER_TYPE_P (type
))
10921 while (POINTER_TYPE_P (t
)
10922 || (TREE_CODE (t
) == ARRAY_TYPE
10923 && TYPE_DOMAIN (t
) != NULL_TREE
))
10925 if (TREE_CODE (t
) == ARRAY_TYPE
)
10926 cp_error ("parameter type `%T' includes %s to array of unknown bound",
10928 TYPE_PTR_P (type
) ? "pointer" : "reference");
10932 if (TREE_CODE (decl
) == VOID_TYPE
)
10934 if (result
== NULL_TREE
)
10936 result
= void_list_node
;
10937 last_result
= result
;
10941 TREE_CHAIN (last_result
) = void_list_node
;
10942 last_result
= void_list_node
;
10945 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10946 error ("`void' in parameter list must be entire list");
10950 /* Since there is a prototype, args are passed in their own types. */
10951 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10952 #ifdef PROMOTE_PROTOTYPES
10953 if ((TREE_CODE (type
) == INTEGER_TYPE
10954 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10955 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10956 DECL_ARG_TYPE (decl
) = integer_type_node
;
10963 if (TREE_CODE (init
) == SAVE_EXPR
)
10964 PARM_DECL_EXPR (init
) = 1;
10965 else if (processing_template_decl
)
10967 /* Unparsed default arg from in-class decl. */
10968 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10970 else if (TREE_CODE (init
) == VAR_DECL
10971 || TREE_CODE (init
) == PARM_DECL
)
10973 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10975 /* ``Local variables may not be used in default
10976 argument expressions.'' dpANSI C++ 8.2.6 */
10977 /* If extern int i; within a function is not
10978 considered a local variable, then this code is
10980 cp_error ("local variable `%D' may not be used as a default argument", init
);
10983 else if (TREE_READONLY_DECL_P (init
))
10984 init
= decl_constant_value (init
);
10987 init
= require_instantiated_type (type
, init
, integer_zero_node
);
10988 if (! processing_template_decl
10989 && init
!= error_mark_node
10990 && TREE_CODE (init
) != DEFAULT_ARG
10991 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
10992 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10993 TREE_TYPE (init
), decl
);
10999 if (decls
== NULL_TREE
)
11006 TREE_CHAIN (last_decl
) = decl
;
11009 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
11011 TREE_PURPOSE (list_node
) = init
;
11012 TREE_VALUE (list_node
) = type
;
11013 TREE_CHAIN (list_node
) = NULL_TREE
;
11016 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
11017 if (result
== NULL_TREE
)
11019 result
= list_node
;
11020 last_result
= result
;
11024 TREE_CHAIN (last_result
) = list_node
;
11025 last_result
= list_node
;
11029 TREE_CHAIN (last_result
) = NULL_TREE
;
11030 /* If there are no parameters, and the function does not end
11031 with `...', then last_decl will be NULL_TREE. */
11032 if (last_decl
!= NULL_TREE
)
11033 TREE_CHAIN (last_decl
) = NULL_TREE
;
11037 last_function_parms
= decls
;
11039 /* In a fcn definition, arg types must be complete. */
11040 if (funcdef_flag
> 0)
11041 require_complete_types_for_parms (last_function_parms
);
11046 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11047 FUNCTION_TYPE with the newly parsed version of its default argument, which
11048 was previously digested as text. See snarf_defarg et al in lex.c. */
11051 replace_defarg (arg
, init
)
11054 if (! processing_template_decl
11055 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11056 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11057 TREE_TYPE (init
), TREE_VALUE (arg
));
11058 TREE_PURPOSE (arg
) = init
;
11065 tree t
= FUNCTION_ARG_CHAIN (d
);
11066 if (DECL_CONSTRUCTOR_P (d
)
11067 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11068 t
= TREE_CHAIN (t
);
11069 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11070 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11071 == DECL_CLASS_CONTEXT (d
))
11072 && (TREE_CHAIN (t
) == NULL_TREE
11073 || TREE_CHAIN (t
) == void_list_node
11074 || TREE_PURPOSE (TREE_CHAIN (t
))))
11079 /* These memoizing functions keep track of special properties which
11080 a class may have. `grok_ctor_properties' notices whether a class
11081 has a constructor of the form X(X&), and also complains
11082 if the class has a constructor of the form X(X).
11083 `grok_op_properties' takes notice of the various forms of
11084 operator= which are defined, as well as what sorts of type conversion
11085 may apply. Both functions take a FUNCTION_DECL as an argument. */
11088 grok_ctor_properties (ctype
, decl
)
11091 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11092 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11094 /* When a type has virtual baseclasses, a magical first int argument is
11095 added to any ctor so we can tell if the class has been initialized
11096 yet. This could screw things up in this function, so we deliberately
11097 ignore the leading int if we're in that situation. */
11098 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11100 my_friendly_assert (parmtypes
11101 && TREE_VALUE (parmtypes
) == integer_type_node
,
11103 parmtypes
= TREE_CHAIN (parmtypes
);
11104 parmtype
= TREE_VALUE (parmtypes
);
11107 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11108 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11109 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11110 || TREE_CHAIN (parmtypes
) == void_list_node
11111 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11113 TYPE_HAS_INIT_REF (ctype
) = 1;
11114 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11115 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11117 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11118 && TREE_CHAIN (parmtypes
) != NULL_TREE
11119 && TREE_CHAIN (parmtypes
) == void_list_node
)
11121 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11123 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11126 else if (TREE_CODE (parmtype
) == VOID_TYPE
11127 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11128 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11133 /* An operator with this name can be either unary or binary. */
11139 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11140 || name
== ansi_opname
[(int) ADDR_EXPR
]
11141 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11142 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11143 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11144 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11147 /* An operator with this name can only be unary. */
11153 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11154 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11155 || name
== ansi_opname
[(int) COMPONENT_REF
]
11156 || OPERATOR_TYPENAME_P (name
));
11159 /* Do a little sanity-checking on how they declared their operator. */
11162 grok_op_properties (decl
, virtualp
, friendp
)
11164 int virtualp
, friendp
;
11166 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11167 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11168 tree name
= DECL_NAME (decl
);
11170 if (current_class_type
== NULL_TREE
)
11175 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11176 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11177 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11178 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11179 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11180 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11181 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11182 || name
== ansi_opname
[(int) MEMBER_REF
])
11183 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11184 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11185 TYPE_GETS_NEW (current_class_type
) |= 1;
11186 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11187 TYPE_GETS_DELETE (current_class_type
) |= 1;
11188 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11189 TYPE_GETS_NEW (current_class_type
) |= 2;
11190 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11191 TYPE_GETS_DELETE (current_class_type
) |= 2;
11194 if (name
== ansi_opname
[(int) NEW_EXPR
]
11195 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11197 /* When the compiler encounters the definition of A::operator new, it
11198 doesn't look at the class declaration to find out if it's static. */
11200 revert_static_member_fn (&decl
, NULL
, NULL
);
11202 /* Take care of function decl if we had syntax errors. */
11203 if (argtypes
== NULL_TREE
)
11205 = build_function_type (ptr_type_node
,
11206 hash_tree_chain (integer_type_node
,
11209 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11211 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11212 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11215 revert_static_member_fn (&decl
, NULL
, NULL
);
11217 if (argtypes
== NULL_TREE
)
11219 = build_function_type (void_type_node
,
11220 hash_tree_chain (ptr_type_node
,
11224 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11226 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11227 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11228 != void_list_node
))
11229 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11234 /* An operator function must either be a non-static member function
11235 or have at least one parameter of a class, a reference to a class,
11236 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11237 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11239 if (OPERATOR_TYPENAME_P (name
)
11240 || name
== ansi_opname
[(int) CALL_EXPR
]
11241 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11242 || name
== ansi_opname
[(int) COMPONENT_REF
]
11243 || name
== ansi_opname
[(int) ARRAY_REF
])
11244 cp_error ("`%D' must be a nonstatic member function", decl
);
11249 if (DECL_STATIC_FUNCTION_P (decl
))
11250 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11253 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11255 tree arg
= TREE_VALUE (p
);
11256 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11257 arg
= TREE_TYPE (arg
);
11259 /* This lets bad template code slip through. */
11260 if (IS_AGGR_TYPE (arg
)
11261 || TREE_CODE (arg
) == ENUMERAL_TYPE
11262 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11263 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11267 ("`%D' must have an argument of class or enumerated type",
11274 if (name
== ansi_opname
[(int) CALL_EXPR
])
11275 return; /* No restrictions on args. */
11277 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11279 tree t
= TREE_TYPE (name
);
11280 if (TREE_CODE (t
) == VOID_TYPE
)
11281 pedwarn ("void is not a valid type conversion operator");
11282 else if (! friendp
)
11284 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11287 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11289 if (t
== current_class_type
)
11290 what
= "the same type";
11291 /* Don't force t to be complete here. */
11292 else if (IS_AGGR_TYPE (t
)
11294 && DERIVED_FROM_P (t
, current_class_type
))
11295 what
= "a base class";
11298 warning ("conversion to %s%s will never use a type conversion operator",
11299 ref
? "a reference to " : "", what
);
11303 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11307 if (list_length (argtypes
) != 3 && methodp
)
11309 cp_error ("`%D' must take exactly one argument", decl
);
11312 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11314 if (copy_assignment_arg_p (parmtype
, virtualp
)
11317 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11318 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11319 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11320 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11323 else if (name
== ansi_opname
[(int) COND_EXPR
])
11326 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11327 if (list_length (argtypes
) != 4)
11328 cp_error ("`%D' must take exactly three arguments", decl
);
11330 else if (ambi_op_p (name
))
11332 if (list_length (argtypes
) == 2)
11334 else if (list_length (argtypes
) == 3)
11336 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11337 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11338 && ! processing_template_decl
11339 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11342 cp_error ("postfix `%D' must take `int' as its argument",
11346 ("postfix `%D' must take `int' as its second argument",
11353 cp_error ("`%D' must take either zero or one argument", decl
);
11355 cp_error ("`%D' must take either one or two arguments", decl
);
11358 /* More Effective C++ rule 6. */
11360 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11361 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11363 tree arg
= TREE_VALUE (argtypes
);
11364 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11365 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11366 arg
= TREE_TYPE (arg
);
11367 arg
= TYPE_MAIN_VARIANT (arg
);
11368 if (list_length (argtypes
) == 2)
11370 if (TREE_CODE (ret
) != REFERENCE_TYPE
11371 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11373 cp_warning ("prefix `%D' should return `%T'", decl
,
11374 build_reference_type (arg
));
11378 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11379 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11383 else if (unary_op_p (name
))
11385 if (list_length (argtypes
) != 2)
11388 cp_error ("`%D' must take `void'", decl
);
11390 cp_error ("`%D' must take exactly one argument", decl
);
11393 else /* if (binary_op_p (name)) */
11395 if (list_length (argtypes
) != 3)
11398 cp_error ("`%D' must take exactly one argument", decl
);
11400 cp_error ("`%D' must take exactly two arguments", decl
);
11403 /* More Effective C++ rule 7. */
11405 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11406 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11407 || name
== ansi_opname
[COMPOUND_EXPR
]))
11408 cp_warning ("user-defined `%D' always evaluates both arguments",
11412 /* Effective C++ rule 23. */
11414 && list_length (argtypes
) == 3
11415 && (name
== ansi_opname
[PLUS_EXPR
]
11416 || name
== ansi_opname
[MINUS_EXPR
]
11417 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11418 || name
== ansi_opname
[MULT_EXPR
])
11419 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11420 cp_warning ("`%D' should return by value", decl
);
11424 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11425 if (TREE_PURPOSE (argtypes
))
11427 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11428 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11429 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11432 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11435 cp_error ("`%D' cannot have default arguments", decl
);
11440 /* Get the struct, enum or union (CODE says which) with tag NAME.
11441 Define the tag as a forward-reference if it is not defined.
11443 C++: If a class derivation is given, process it here, and report
11444 an error if multiple derivation declarations are not identical.
11446 If this is a definition, come in through xref_tag and only look in
11447 the current frame for the name (since C++ allows new names in any
11451 xref_tag (code_type_node
, name
, globalize
)
11452 tree code_type_node
;
11456 enum tag_types tag_code
;
11457 enum tree_code code
;
11459 register tree ref
, t
;
11460 struct binding_level
*b
= inner_binding_level
;
11462 tree attributes
= NULL_TREE
;
11464 /* If we are called from the parser, code_type_node will sometimes be a
11465 TREE_LIST. This indicates that the user wrote
11466 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11468 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11470 attributes
= TREE_PURPOSE (code_type_node
);
11471 code_type_node
= TREE_VALUE (code_type_node
);
11474 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11479 case signature_type
:
11480 code
= RECORD_TYPE
;
11486 code
= ENUMERAL_TYPE
;
11489 my_friendly_abort (18);
11492 /* If a cross reference is requested, look up the type
11493 already defined for this tag and return it. */
11494 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11497 name
= TYPE_IDENTIFIER (t
);
11501 t
= IDENTIFIER_TYPE_VALUE (name
);
11502 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11503 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11508 if (t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11509 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11511 cp_error ("redeclaration of template type-parameter `%T'", name
);
11512 cp_error_at (" previously declared here `%#D'",
11513 TEMPLATE_TYPE_DECL (t
));
11515 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11518 /* If we know we are defining this tag, only look it up in
11519 this scope and don't try to find it as a type. */
11520 ref
= lookup_tag (code
, name
, b
, 1);
11524 if (current_class_type
11525 && template_class_depth (current_class_type
)
11526 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11527 /* Since GLOBALIZE is non-zero, we are not looking at a
11528 definition of this tag. Since, in addition, we are currently
11529 processing a (member) template declaration of a template
11530 class, we don't want to do any lookup at all; consider:
11537 { template <class V>
11538 friend struct S1; };
11540 Here, the S2::S1 declaration should not be confused with the
11541 outer declaration. In particular, the inner version should
11542 have a template parameter of level 2, not level 1. This
11543 would be particularly important if the member declaration
11546 template <class V = U> friend struct S1;
11548 say, when we should tsubst into `U' when instantiating S2. */
11555 ref
= lookup_tag (code
, name
, b
, 0);
11559 /* Try finding it as a type declaration. If that wins,
11561 ref
= lookup_name (name
, 1);
11563 if (ref
!= NULL_TREE
11564 && processing_template_decl
11565 && DECL_CLASS_TEMPLATE_P (ref
)
11566 && template_class_depth (current_class_type
) == 0)
11567 /* Since GLOBALIZE is true, we're declaring a global
11568 template, so we want this type. */
11569 ref
= DECL_RESULT (ref
);
11571 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11572 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11573 ref
= TREE_TYPE (ref
);
11580 push_obstacks_nochange ();
11584 /* If no such tag is yet defined, create a forward-reference node
11585 and record it as the "definition".
11586 When a real declaration of this type is found,
11587 the forward-reference will be altered into a real type. */
11589 /* In C++, since these migrate into the global scope, we must
11590 build them on the permanent obstack. */
11592 temp
= allocation_temporary_p ();
11594 end_temporary_allocation ();
11596 if (code
== ENUMERAL_TYPE
)
11598 cp_error ("use of enum `%#D' without previous declaration", name
);
11600 ref
= make_node (ENUMERAL_TYPE
);
11602 /* Give the type a default layout like unsigned int
11603 to avoid crashing if it does not get defined. */
11604 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11605 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11606 TREE_UNSIGNED (ref
) = 1;
11607 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11608 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11609 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11611 /* Enable us to recognize when a type is created in class context.
11612 To do nested classes correctly, this should probably be cleared
11613 out when we leave this classes scope. Currently this in only
11614 done in `start_enum'. */
11616 pushtag (name
, ref
, globalize
);
11620 struct binding_level
*old_b
= class_binding_level
;
11622 ref
= make_lang_type (code
);
11624 if (tag_code
== signature_type
)
11626 SET_SIGNATURE (ref
);
11627 /* Since a signature type will be turned into the type
11628 of signature tables, it's not only an interface. */
11629 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11630 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11631 /* A signature doesn't have a vtable. */
11632 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11635 #ifdef NONNESTED_CLASSES
11636 /* Class types don't nest the way enums do. */
11637 class_binding_level
= (struct binding_level
*)0;
11639 pushtag (name
, ref
, globalize
);
11640 class_binding_level
= old_b
;
11645 /* If it no longer looks like a nested type, make sure it's
11647 If it is not an IDENTIFIER, this is not a declaration */
11648 if (b
->namespace_p
&& !class_binding_level
11649 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11651 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11652 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11655 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11656 redeclare_class_template (ref
, current_template_parms
);
11659 /* Until the type is defined, tentatively accept whatever
11660 structure tag the user hands us. */
11661 if (TYPE_SIZE (ref
) == NULL_TREE
11662 && ref
!= current_class_type
11663 /* Have to check this, in case we have contradictory tag info. */
11664 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11666 if (tag_code
== class_type
)
11667 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11668 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11669 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11674 TREE_TYPE (ref
) = attributes
;
11680 xref_tag_from_type (old
, id
, globalize
)
11684 tree code_type_node
;
11686 if (TREE_CODE (old
) == RECORD_TYPE
)
11687 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11688 ? class_type_node
: record_type_node
);
11690 code_type_node
= union_type_node
;
11692 if (id
== NULL_TREE
)
11693 id
= TYPE_IDENTIFIER (old
);
11695 return xref_tag (code_type_node
, id
, globalize
);
11699 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11700 tree code_type_node
;
11704 /* In the declaration `A : X, Y, ... Z' we mark all the types
11705 (A, X, Y, ..., Z) so we can check for duplicates. */
11708 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11710 if (tag_code
== union_type
)
11712 cp_error ("derived union `%T' invalid", ref
);
11716 len
= list_length (binfo
);
11717 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11719 SET_CLASSTYPE_MARKED (ref
);
11720 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11722 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11724 /* The base of a derived struct is public by default. */
11726 = (TREE_PURPOSE (binfo
) == access_public_node
11727 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11728 || (tag_code
!= class_type
11729 && (TREE_PURPOSE (binfo
) == access_default_node
11730 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11732 = (TREE_PURPOSE (binfo
) == access_protected_node
11733 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11735 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11736 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11737 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11738 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11739 tree basetype
= TREE_VALUE (binfo
);
11742 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11743 basetype
= TREE_TYPE (basetype
);
11745 || (TREE_CODE (basetype
) != RECORD_TYPE
11746 && TREE_CODE (basetype
) != TYPENAME_TYPE
11747 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11748 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11750 cp_error ("base type `%T' fails to be a struct or class type",
11751 TREE_VALUE (binfo
));
11755 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11758 /* This code replaces similar code in layout_basetypes.
11759 We put the complete_type first for implicit `typename'. */
11760 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11761 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11763 cp_error ("base class `%T' has incomplete type", basetype
);
11769 if (CLASSTYPE_MARKED (basetype
))
11771 if (basetype
== ref
)
11772 cp_error ("recursive type `%T' undefined", basetype
);
11774 cp_error ("duplicate base type `%T' invalid", basetype
);
11778 if (TYPE_FOR_JAVA (basetype
)
11779 && current_lang_stack
== current_lang_base
)
11780 TYPE_FOR_JAVA (ref
) = 1;
11782 /* Note that the BINFO records which describe individual
11783 inheritances are *not* shared in the lattice! They
11784 cannot be shared because a given baseclass may be
11785 inherited with different `accessibility' by different
11786 derived classes. (Each BINFO record describing an
11787 individual inheritance contains flags which say what
11788 the `accessibility' of that particular inheritance is.) */
11790 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11791 TYPE_BINFO_VTABLE (basetype
),
11792 TYPE_BINFO_VIRTUALS (basetype
));
11794 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11795 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11796 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11797 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11798 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11800 /* We need to unshare the binfos now so that lookups during class
11801 definition work. */
11802 unshare_base_binfos (base_binfo
);
11804 SET_CLASSTYPE_MARKED (basetype
);
11806 /* We are free to modify these bits because they are meaningless
11807 at top level, and BASETYPE is a top-level type. */
11808 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11810 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11811 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11814 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11815 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11816 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
11821 TREE_VEC_LENGTH (binfos
) = i
;
11823 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11826 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11828 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11829 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11830 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11831 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11833 /* Unmark all the types. */
11835 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11836 CLEAR_CLASSTYPE_MARKED (ref
);
11842 tree current_local_enum
= NULL_TREE
;
11844 /* Begin compiling the definition of an enumeration type.
11845 NAME is its name (or null if anonymous).
11846 Returns the type object, as yet incomplete.
11847 Also records info about it so that build_enumerator
11848 may be used to declare the individual values as they are read. */
11854 register tree enumtype
= NULL_TREE
;
11855 struct binding_level
*b
= inner_binding_level
;
11857 /* We are wasting space here and putting these on the permanent_obstack so
11858 that typeid(local enum) will work correctly. */
11860 if (processing_template_decl
&& current_function_decl
)
11863 end_temporary_allocation ();
11865 /* If this is the real definition for a previous forward reference,
11866 fill in the contents in the same object that used to be the
11867 forward reference. */
11869 if (name
!= NULL_TREE
)
11870 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11872 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11873 cp_error ("multiple definition of `%#T'", enumtype
);
11876 enumtype
= make_node (ENUMERAL_TYPE
);
11877 pushtag (name
, enumtype
, 0);
11880 if (current_class_type
)
11881 TREE_ADDRESSABLE (b
->tags
) = 1;
11883 current_local_enum
= NULL_TREE
;
11885 /* We don't copy this value because build_enumerator needs to do it. */
11886 enum_next_value
= integer_zero_node
;
11889 GNU_xref_decl (current_function_decl
, enumtype
);
11893 /* After processing and defining all the values of an enumeration type,
11894 install their decls in the enumeration type and finish it off.
11895 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11896 Returns ENUMTYPE. */
11899 finish_enum (enumtype
)
11902 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11903 /* Calculate the maximum value of any enumerator in this type. */
11905 tree values
= TYPE_VALUES (enumtype
);
11910 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11915 /* The TREE_VALUE is a CONST_DECL for this enumeration
11917 decl
= TREE_VALUE (pair
);
11919 /* The DECL_INITIAL will be NULL if we are processing a
11920 template declaration and this enumeration constant had no
11921 explicit initializer. */
11922 value
= DECL_INITIAL (decl
);
11923 if (value
&& !processing_template_decl
)
11925 /* Set the TREE_TYPE for the VALUE as well. That's so
11926 that when we call decl_constant_value we get an
11927 entity of the right type (but with the constant
11928 value). Since we shouldn't ever call
11929 decl_constant_value on a template type, there's no
11930 reason to do that when processing_template_decl.
11931 And, if the expression is something like a
11932 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
11933 wreak havoc on the intended type of the expression.
11935 Of course, there's also no point in trying to compute
11936 minimum or maximum values if we're in a template. */
11937 TREE_TYPE (value
) = enumtype
;
11940 minnode
= maxnode
= value
;
11941 else if (tree_int_cst_lt (maxnode
, value
))
11943 else if (tree_int_cst_lt (value
, minnode
))
11947 if (processing_template_decl
)
11948 /* If this is just a template, leave the CONST_DECL
11949 alone. That way tsubst_copy will find CONST_DECLs for
11950 CONST_DECLs, and not INTEGER_CSTs. */
11953 /* In the list we're building up, we want the enumeration
11954 values, not the CONST_DECLs. */
11955 TREE_VALUE (pair
) = value
;
11959 maxnode
= minnode
= integer_zero_node
;
11961 TYPE_VALUES (enumtype
) = nreverse (values
);
11963 if (processing_template_decl
)
11965 tree scope
= current_scope ();
11966 if (scope
&& TREE_CODE (scope
) == FUNCTION_DECL
)
11968 add_tree (build_min (TAG_DEFN
, enumtype
));
11969 resume_temporary_allocation ();
11975 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
11976 int lowprec
= min_precision (minnode
, unsignedp
);
11977 int highprec
= min_precision (maxnode
, unsignedp
);
11978 int precision
= MAX (lowprec
, highprec
);
11980 TYPE_SIZE (enumtype
) = NULL_TREE
;
11982 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11984 TYPE_PRECISION (enumtype
) = precision
;
11986 fixup_unsigned_type (enumtype
);
11988 fixup_signed_type (enumtype
);
11990 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
11991 /* Use the width of the narrowest normal C type which is wide enough. */
11992 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
11995 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
11997 TYPE_SIZE (enumtype
) = 0;
11998 layout_type (enumtype
);
12004 /* Fix up all variant types of this enum type. */
12005 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
12006 tem
= TYPE_NEXT_VARIANT (tem
))
12008 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
12009 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
12010 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
12011 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
12012 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
12013 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
12014 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
12015 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
12016 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
12020 /* Finish debugging output for this type. */
12021 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
12026 /* Build and install a CONST_DECL for an enumeration constant of the
12027 enumeration type TYPE whose NAME and VALUE (if any) are provided.
12028 Assignment of sequential values by default is handled here. */
12031 build_enumerator (name
, value
, type
)
12039 /* Remove no-op casts from the value. */
12041 STRIP_TYPE_NOPS (value
);
12043 if (! processing_template_decl
)
12045 /* Validate and default VALUE. */
12046 if (value
!= NULL_TREE
)
12048 if (TREE_READONLY_DECL_P (value
))
12049 value
= decl_constant_value (value
);
12051 if (TREE_CODE (value
) == INTEGER_CST
)
12053 value
= default_conversion (value
);
12054 constant_expression_warning (value
);
12058 cp_error ("enumerator value for `%D' not integer constant", name
);
12063 /* Default based on previous value. */
12064 if (value
== NULL_TREE
&& ! processing_template_decl
)
12066 value
= enum_next_value
;
12068 cp_error ("overflow in enumeration values at `%D'", name
);
12071 /* Remove no-op casts from the value. */
12073 STRIP_TYPE_NOPS (value
);
12075 /* To fix MAX_VAL enum consts. (bkoz) */
12076 TREE_TYPE (value
) = integer_type_node
;
12080 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12081 Even in other cases, we will later (in finish_enum) be setting the
12083 if (value
!= NULL_TREE
)
12084 value
= copy_node (value
);
12086 /* C++ associates enums with global, function, or class declarations. */
12088 context
= current_scope ();
12089 if (context
&& context
== current_class_type
)
12090 /* This enum declaration is local to the class. */
12091 decl
= build_lang_field_decl (CONST_DECL
, name
, type
);
12093 /* It's a global enum, or it's local to a function. (Note local to
12094 a function could mean local to a class method. */
12095 decl
= build_decl (CONST_DECL
, name
, type
);
12097 DECL_CONTEXT (decl
) = FROB_CONTEXT (context
);
12098 DECL_INITIAL (decl
) = value
;
12099 TREE_READONLY (decl
) = 1;
12101 if (context
&& context
== current_class_type
)
12103 pushdecl_class_level (decl
);
12104 TREE_CHAIN (decl
) = current_local_enum
;
12105 current_local_enum
= decl
;
12110 GNU_xref_decl (current_function_decl
, decl
);
12113 if (! processing_template_decl
)
12115 /* Set basis for default for next value. */
12116 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12117 integer_one_node
, PLUS_EXPR
);
12118 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12121 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12125 /* Called after we have finished the declaration of an enumeration
12126 type, and, perhaps, some objects whose type involves the
12127 enumeration type. DECL, if non-NULL, is the declaration of the
12130 If CURRENT_LOCAL_ENUM is NULL, the DECL is returned.
12132 If CURRENT_LOCAL_ENUM is non-NULL, it should be the CONST_DECL for
12133 the last enumeration constant of an enumeration type that is a
12134 member of a class. The enumeration constants are already chained
12135 together through their TREE_CHAIN fields. This function sets the
12136 TREE_CHAIN of the last enumeration constant to DECL. The
12137 CONST_DECL for the last enumeration constant is returned.
12139 CURRENT_LOCAL_ENUM will always be NULL when this function
12143 grok_enum_decls (decl
)
12146 tree d
= current_local_enum
;
12148 if (d
== NULL_TREE
)
12153 if (TREE_CHAIN (d
) == NULL_TREE
)
12155 TREE_CHAIN (d
) = decl
;
12158 d
= TREE_CHAIN (d
);
12161 decl
= current_local_enum
;
12162 current_local_enum
= NULL_TREE
;
12167 static int function_depth
;
12169 /* Create the FUNCTION_DECL for a function definition.
12170 DECLSPECS and DECLARATOR are the parts of the declaration;
12171 they describe the function's name and the type it returns,
12172 but twisted together in a fashion that parallels the syntax of C.
12174 This function creates a binding context for the function body
12175 as well as setting up the FUNCTION_DECL in current_function_decl.
12177 Returns 1 on success. If the DECLARATOR is not suitable for a function
12178 (it defines a datum instead), we return 0, which tells
12179 yyparse to report a parse error.
12181 For C++, we must first check whether that datum makes any sense.
12182 For example, "class A local_a(1,2);" means that variable local_a
12183 is an aggregate of type A, which should have a constructor
12184 applied to it with the argument list [1, 2].
12186 @@ There is currently no way to retrieve the storage
12187 @@ allocated to FUNCTION (or all of its parms) if we return
12188 @@ something we had previously. */
12191 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12192 tree declspecs
, declarator
, attrs
;
12196 tree ctype
= NULL_TREE
;
12199 extern int have_extern_spec
;
12200 extern int used_extern_spec
;
12201 int doing_friend
= 0;
12203 /* Sanity check. */
12204 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12205 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12207 /* Assume, until we see it does. */
12208 current_function_returns_value
= 0;
12209 current_function_returns_null
= 0;
12210 warn_about_return_type
= 0;
12212 shadowed_labels
= 0;
12213 current_function_assigns_this
= 0;
12214 current_function_just_assigned_this
= 0;
12215 current_function_parms_stored
= 0;
12216 original_result_rtx
= NULL_RTX
;
12217 base_init_expr
= NULL_TREE
;
12218 current_base_init_list
= NULL_TREE
;
12219 current_member_init_list
= NULL_TREE
;
12220 ctor_label
= dtor_label
= NULL_TREE
;
12221 static_labelno
= 0;
12223 clear_temp_name ();
12225 /* This should only be done once on the top most decl. */
12226 if (have_extern_spec
&& !used_extern_spec
)
12228 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12229 used_extern_spec
= 1;
12234 decl1
= declarator
;
12237 /* What was this testing for, exactly? */
12238 if (! DECL_ARGUMENTS (decl1
)
12239 && !DECL_STATIC_FUNCTION_P (decl1
)
12240 && !DECL_ARTIFICIAL (decl1
)
12241 && DECL_CLASS_SCOPE_P (decl1
)
12242 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12243 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12245 tree binding
= binding_for_name (DECL_NAME (decl1
),
12246 current_namespace
);
12247 cp_error ("redeclaration of `%#D'", decl1
);
12248 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12249 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12250 else if (BINDING_VALUE (binding
))
12251 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12255 fntype
= TREE_TYPE (decl1
);
12256 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12257 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12259 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12260 class is in the (lexical) scope of the class in which it is
12262 if (!ctype
&& DECL_FRIEND_P (decl1
))
12264 ctype
= DECL_CLASS_CONTEXT (decl1
);
12266 /* CTYPE could be null here if we're dealing with a template;
12267 for example, `inline friend float foo()' inside a template
12268 will have no CTYPE set. */
12269 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12275 /* In a fcn definition, arg types must be complete. */
12276 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12278 /* In case some arg types were completed since the declaration was
12279 parsed, fix up the decls. */
12281 tree t
= DECL_ARGUMENTS (decl1
);
12282 for (; t
; t
= TREE_CHAIN (t
))
12283 layout_decl (t
, 0);
12286 last_function_parms
= DECL_ARGUMENTS (decl1
);
12287 last_function_parm_tags
= NULL_TREE
;
12291 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12292 /* If the declarator is not suitable for a function definition,
12293 cause a syntax error. */
12294 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12296 fntype
= TREE_TYPE (decl1
);
12298 restype
= TREE_TYPE (fntype
);
12299 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12300 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12302 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12303 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12304 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12305 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12306 fntype
= build_function_type (integer_type_node
,
12307 TYPE_ARG_TYPES (fntype
));
12309 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12311 TYPE_ARG_TYPES (fntype
));
12312 TREE_TYPE (decl1
) = fntype
;
12315 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12316 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12317 else if (DECL_MAIN_P (decl1
))
12319 /* If this doesn't return integer_type, complain. */
12320 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12322 if (pedantic
|| warn_return_type
)
12323 pedwarn ("return type for `main' changed to `int'");
12324 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12326 warn_about_return_type
= 0;
12330 /* Warn if function was previously implicitly declared
12331 (but not if we warned then). */
12332 if (! warn_implicit
12333 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12334 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12336 current_function_decl
= decl1
;
12337 /* Save the parm names or decls from this function's declarator
12338 where store_parm_decls will find them. */
12339 current_function_parms
= last_function_parms
;
12340 current_function_parm_tags
= last_function_parm_tags
;
12342 announce_function (decl1
);
12344 if (! processing_template_decl
)
12346 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12348 cp_error ("return-type `%#T' is an incomplete type",
12349 TREE_TYPE (fntype
));
12351 /* Make it return void instead, but don't change the
12352 type of the DECL_RESULT, in case we have a named return value. */
12355 = build_cplus_method_type (build_type_variant (ctype
,
12356 TREE_READONLY (decl1
),
12357 TREE_SIDE_EFFECTS (decl1
)),
12359 FUNCTION_ARG_CHAIN (decl1
));
12362 = build_function_type (void_type_node
,
12363 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12364 DECL_RESULT (decl1
)
12365 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12366 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12367 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12370 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12371 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12372 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12375 if (warn_about_return_type
)
12376 pedwarn ("return-type defaults to `int'");
12378 /* Effective C++ rule 15. See also c_expand_return. */
12380 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12381 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12382 cp_warning ("`operator=' should return a reference to `*this'");
12384 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12385 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12386 DECL_INITIAL (decl1
) = error_mark_node
;
12388 /* This function exists in static storage.
12389 (This does not mean `static' in the C sense!) */
12390 TREE_STATIC (decl1
) = 1;
12392 /* Set up current_class_type, and enter the scope of the class, if
12395 push_nested_class (ctype
, 1);
12396 else if (DECL_STATIC_FUNCTION_P (decl1
))
12397 push_nested_class (DECL_CONTEXT (decl1
), 2);
12399 /* We must call push_template_decl after current_class_type is set
12400 up. (If we are processing inline definitions after exiting a
12401 class scope, current_class_type will be NULL_TREE until set above
12402 by push_nested_class.) */
12403 if (processing_template_decl
)
12404 decl1
= push_template_decl (decl1
);
12406 /* Record the decl so that the function name is defined.
12407 If we already have a decl for this name, and it is a FUNCTION_DECL,
12408 use the old decl. */
12409 if (!processing_template_decl
&& pre_parsed_p
== 0)
12411 /* A specialization is not used to guide overload resolution. */
12412 if ((flag_guiding_decls
12413 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12414 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12415 decl1
= pushdecl (decl1
);
12418 /* We need to set the DECL_CONTEXT. */
12419 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12420 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12421 /* And make sure we have enough default args. */
12422 check_default_args (decl1
);
12424 DECL_MAIN_VARIANT (decl1
) = decl1
;
12425 fntype
= TREE_TYPE (decl1
);
12428 current_function_decl
= decl1
;
12430 if (DECL_INTERFACE_KNOWN (decl1
))
12432 tree ctx
= hack_decl_function_context (decl1
);
12434 if (DECL_NOT_REALLY_EXTERN (decl1
))
12435 DECL_EXTERNAL (decl1
) = 0;
12437 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12438 && TREE_PUBLIC (ctx
))
12439 /* This is a function in a local class in an extern inline
12441 comdat_linkage (decl1
);
12443 /* If this function belongs to an interface, it is public.
12444 If it belongs to someone else's interface, it is also external.
12445 It doesn't matter whether it's inline or not. */
12446 else if (interface_unknown
== 0
12447 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12448 || flag_alt_external_templates
))
12450 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12451 || processing_template_decl
)
12452 DECL_EXTERNAL (decl1
)
12454 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12456 DECL_EXTERNAL (decl1
) = 0;
12457 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12458 DECL_INTERFACE_KNOWN (decl1
) = 1;
12462 /* This is a definition, not a reference.
12463 So clear DECL_EXTERNAL. */
12464 DECL_EXTERNAL (decl1
) = 0;
12466 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12467 && ! DECL_INTERFACE_KNOWN (decl1
)
12468 /* Don't try to defer nested functions for now. */
12469 && ! hack_decl_function_context (decl1
))
12470 DECL_DEFER_OUTPUT (decl1
) = 1;
12472 DECL_INTERFACE_KNOWN (decl1
) = 1;
12475 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12477 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12478 TREE_TYPE (decl1
) = fntype
12479 = build_function_type (TREE_TYPE (fntype
),
12480 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12481 current_function_parms
= TREE_CHAIN (current_function_parms
);
12482 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12485 restype
= TREE_TYPE (fntype
);
12489 /* If we're compiling a friend function, neither of the variables
12490 current_class_ptr nor current_class_type will have values. */
12491 if (! doing_friend
)
12493 /* We know that this was set up by `grokclassfn'.
12494 We do not wait until `store_parm_decls', since evil
12495 parse errors may never get us to that point. Here
12496 we keep the consistency between `current_class_type'
12497 and `current_class_ptr'. */
12498 tree t
= current_function_parms
;
12500 my_friendly_assert (t
!= NULL_TREE
12501 && TREE_CODE (t
) == PARM_DECL
, 162);
12503 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12505 int i
= suspend_momentary ();
12507 /* Fool build_indirect_ref. */
12508 current_class_ptr
= NULL_TREE
;
12509 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12510 current_class_ptr
= t
;
12511 resume_momentary (i
);
12514 /* We're having a signature pointer here. */
12515 current_class_ref
= current_class_ptr
= t
;
12521 current_class_ptr
= current_class_ref
= NULL_TREE
;
12525 current_binding_level
->parm_flag
= 1;
12527 GNU_xref_function (decl1
, current_function_parms
);
12530 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12531 make_function_rtl (decl1
);
12533 /* Promote the value to int before returning it. */
12534 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12535 restype
= type_promotes_to (restype
);
12537 /* If this fcn was already referenced via a block-scope `extern' decl
12538 (or an implicit decl), propagate certain information about the usage. */
12539 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12540 TREE_ADDRESSABLE (decl1
) = 1;
12542 if (DECL_RESULT (decl1
) == NULL_TREE
)
12544 DECL_RESULT (decl1
)
12545 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12546 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12547 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12550 /* Allocate further tree nodes temporarily during compilation
12551 of this function only. Tiemann moved up here from bottom of fn. */
12552 /* If this is a nested function, then we must continue to allocate RTL
12553 on the permanent obstack in case we need to inline it later. */
12554 if (! hack_decl_function_context (decl1
))
12555 temporary_allocation ();
12557 if (processing_template_decl
)
12559 ++minimal_parse_mode
;
12560 last_tree
= DECL_SAVED_TREE (decl1
)
12561 = build_nt (EXPR_STMT
, void_zero_node
);
12566 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12567 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12569 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12570 ctor_label
= NULL_TREE
;
12574 dtor_label
= NULL_TREE
;
12575 if (DECL_CONSTRUCTOR_P (decl1
))
12576 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12582 /* Called after store_parm_decls for a function-try-block. We need to update
12583 last_parm_cleanup_insn so that the base initializers for a constructor
12584 are run within this block, not before it. */
12587 expand_start_early_try_stmts ()
12589 expand_start_try_stmts ();
12590 last_parm_cleanup_insn
= get_last_insn ();
12593 /* Store the parameter declarations into the current function declaration.
12594 This is called after parsing the parameter declarations, before
12595 digesting the body of the function.
12597 Also install to binding contour return value identifier, if any. */
12600 store_parm_decls ()
12602 register tree fndecl
= current_function_decl
;
12603 register tree parm
;
12604 int parms_have_cleanups
= 0;
12605 tree cleanups
= NULL_TREE
;
12607 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12608 tree specparms
= current_function_parms
;
12610 /* This is a list of types declared among parms in a prototype. */
12611 tree parmtags
= current_function_parm_tags
;
12613 /* This is a chain of any other decls that came in among the parm
12614 declarations. If a parm is declared with enum {foo, bar} x;
12615 then CONST_DECLs for foo and bar are put here. */
12616 tree nonparms
= NULL_TREE
;
12618 if (toplevel_bindings_p ())
12619 fatal ("parse errors have confused me too much");
12621 /* Initialize RTL machinery. */
12622 init_function_start (fndecl
, input_filename
, lineno
);
12624 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12625 declare_function_name ();
12627 /* Create a binding level for the parms. */
12628 expand_start_bindings (0);
12630 if (specparms
!= NULL_TREE
)
12632 /* This case is when the function was defined with an ANSI prototype.
12633 The parms already have decls, so we need not do anything here
12634 except record them as in effect
12635 and complain if any redundant old-style parm decls were written. */
12637 register tree next
;
12639 /* Must clear this because it might contain TYPE_DECLs declared
12641 storedecls (NULL_TREE
);
12643 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12645 next
= TREE_CHAIN (parm
);
12646 if (TREE_CODE (parm
) == PARM_DECL
)
12649 if (DECL_NAME (parm
) == NULL_TREE
)
12653 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12654 cp_error ("parameter `%D' declared void", parm
);
12657 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12658 A parameter is assumed not to have any side effects.
12659 If this should change for any reason, then this
12660 will have to wrap the bashed reference type in a save_expr.
12662 Also, if the parameter type is declared to be an X
12663 and there is an X(X&) constructor, we cannot lay it
12664 into the stack (any more), so we make this parameter
12665 look like it is really of reference type. Functions
12666 which pass parameters to this function will know to
12667 create a temporary in their frame, and pass a reference
12670 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12671 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12672 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12676 if (! processing_template_decl
12677 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12679 expand_decl (parm
);
12680 parms_have_cleanups
= 1;
12682 /* Keep track of the cleanups. */
12683 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12688 /* If we find an enum constant or a type tag,
12689 put it aside for the moment. */
12690 TREE_CHAIN (parm
) = NULL_TREE
;
12691 nonparms
= chainon (nonparms
, parm
);
12695 /* Get the decls in their original chain order
12696 and record in the function. This is all and only the
12697 PARM_DECLs that were pushed into scope by the loop above. */
12698 DECL_ARGUMENTS (fndecl
) = getdecls ();
12700 storetags (chainon (parmtags
, gettags ()));
12703 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12705 /* Now store the final chain of decls for the arguments
12706 as the decl-chain of the current lexical scope.
12707 Put the enumerators in as well, at the front so that
12708 DECL_ARGUMENTS is not modified. */
12710 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12712 /* Initialize the RTL code for the function. */
12713 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12714 if (! processing_template_decl
)
12715 expand_function_start (fndecl
, parms_have_cleanups
);
12717 current_function_parms_stored
= 1;
12719 /* If this function is `main', emit a call to `__main'
12720 to run global initializers, etc. */
12721 if (DECL_MAIN_P (fndecl
))
12722 expand_main_function ();
12724 /* Now that we have initialized the parms, we can start their
12725 cleanups. We cannot do this before, since expand_decl_cleanup
12726 should not be called before the parm can be used. */
12728 && ! processing_template_decl
)
12730 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12732 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12733 cp_error ("parser lost in parsing declaration of `%D'",
12734 TREE_PURPOSE (cleanups
));
12738 /* Create a binding contour which can be used to catch
12739 cleanup-generated temporaries. Also, if the return value needs or
12740 has initialization, deal with that now. */
12741 if (parms_have_cleanups
)
12744 expand_start_bindings (0);
12747 if (! processing_template_decl
&& flag_exceptions
)
12749 /* Do the starting of the exception specifications, if we have any. */
12750 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12751 expand_start_eh_spec ();
12754 last_parm_cleanup_insn
= get_last_insn ();
12755 last_dtor_insn
= get_last_insn ();
12758 /* Bind a name and initialization to the return value of
12759 the current function. */
12762 store_return_init (return_id
, init
)
12763 tree return_id
, init
;
12765 tree decl
= DECL_RESULT (current_function_decl
);
12768 /* Give this error as many times as there are occurrences,
12769 so that users can use Emacs compilation buffers to find
12770 and fix all such places. */
12771 pedwarn ("ANSI C++ does not permit named return values");
12773 if (return_id
!= NULL_TREE
)
12775 if (DECL_NAME (decl
) == NULL_TREE
)
12777 DECL_NAME (decl
) = return_id
;
12778 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12781 cp_error ("return identifier `%D' already in place", decl
);
12784 /* Can't let this happen for constructors. */
12785 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12787 error ("can't redefine default return value for constructors");
12791 /* If we have a named return value, put that in our scope as well. */
12792 if (DECL_NAME (decl
) != NULL_TREE
)
12794 /* If this named return value comes in a register,
12795 put it in a pseudo-register. */
12796 if (DECL_REGISTER (decl
))
12798 original_result_rtx
= DECL_RTL (decl
);
12799 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12802 /* Let `cp_finish_decl' know that this initializer is ok. */
12803 DECL_INITIAL (decl
) = init
;
12806 if (minimal_parse_mode
)
12807 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12808 copy_to_permanent (init
)));
12810 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12815 /* Finish up a function declaration and compile that function
12816 all the way to assembler language output. The free the storage
12817 for the function definition.
12819 This is called after parsing the body of the function definition.
12820 LINENO is the current line number.
12822 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12823 (and expand_end_bindings) must be made to take care of the binding
12824 contour for the base initializers. This is only relevant for
12827 NESTED is nonzero if we were in the middle of compiling another function
12828 when we started on this one. */
12831 finish_function (lineno
, call_poplevel
, nested
)
12836 register tree fndecl
= current_function_decl
;
12837 tree fntype
, ctype
= NULL_TREE
;
12838 rtx last_parm_insn
, insns
;
12839 /* Label to use if this function is supposed to return a value. */
12840 tree no_return_label
= NULL_TREE
;
12841 tree decls
= NULL_TREE
;
12843 /* When we get some parse errors, we can end up without a
12844 current_function_decl, so cope. */
12845 if (fndecl
== NULL_TREE
)
12848 if (! nested
&& function_depth
> 1)
12851 fntype
= TREE_TYPE (fndecl
);
12853 /* TREE_READONLY (fndecl) = 1;
12854 This caused &foo to be of type ptr-to-const-function
12855 which then got a warning when stored in a ptr-to-function variable. */
12857 /* This happens on strange parse errors. */
12858 if (! current_function_parms_stored
)
12861 store_parm_decls ();
12864 if (processing_template_decl
)
12866 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12868 decls
= getdecls ();
12869 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12870 poplevel (decls
!= NULL_TREE
, 0, 0);
12875 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12877 tree ttype
= target_type (fntype
);
12880 if (IS_AGGR_TYPE (ttype
))
12881 /* Let debugger know it should output info for this type. */
12882 note_debug_info_needed (ttype
);
12884 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12886 ttype
= target_type (TREE_TYPE (parmdecl
));
12887 if (IS_AGGR_TYPE (ttype
))
12888 /* Let debugger know it should output info for this type. */
12889 note_debug_info_needed (ttype
);
12893 /* Clean house because we will need to reorder insns here. */
12894 do_pending_stack_adjust ();
12898 tree binfo
= TYPE_BINFO (current_class_type
);
12899 tree cond
= integer_one_node
;
12901 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12903 int ok_to_optimize_dtor
= 0;
12904 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12906 if (current_function_assigns_this
)
12907 cond
= build (NE_EXPR
, boolean_type_node
,
12908 current_class_ptr
, integer_zero_node
);
12911 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12913 /* If this destructor is empty, then we don't need to check
12914 whether `this' is NULL in some cases. */
12915 if ((flag_this_is_variable
& 1) == 0)
12916 ok_to_optimize_dtor
= 1;
12917 else if (empty_dtor
)
12918 ok_to_optimize_dtor
12919 = (n_baseclasses
== 0
12920 || (n_baseclasses
== 1
12921 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12924 /* These initializations might go inline. Protect
12925 the binding level of the parms. */
12927 expand_start_bindings (0);
12929 if (current_function_assigns_this
)
12931 current_function_assigns_this
= 0;
12932 current_function_just_assigned_this
= 0;
12935 /* Generate the code to call destructor on base class.
12936 If this destructor belongs to a class with virtual
12937 functions, then set the virtual function table
12938 pointer to represent the type of our base class. */
12940 /* This side-effect makes call to `build_delete' generate the
12941 code we have to have at the end of this destructor. */
12942 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12944 /* These are two cases where we cannot delegate deletion. */
12945 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12946 || TYPE_GETS_REG_DELETE (current_class_type
))
12947 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12948 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12950 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12951 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12953 /* If we did not assign to this, then `this' is non-zero at
12954 the end of a destructor. As a special optimization, don't
12955 emit test if this is an empty destructor. If it does nothing,
12956 it does nothing. If it calls a base destructor, the base
12957 destructor will perform the test. */
12959 if (exprstmt
!= error_mark_node
12960 && (TREE_CODE (exprstmt
) != NOP_EXPR
12961 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12962 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12964 expand_label (dtor_label
);
12965 if (cond
!= integer_one_node
)
12966 expand_start_cond (cond
, 0);
12967 if (exprstmt
!= void_zero_node
)
12968 /* Don't call `expand_expr_stmt' if we're not going to do
12969 anything, since -Wall will give a diagnostic. */
12970 expand_expr_stmt (exprstmt
);
12972 /* Run destructor on all virtual baseclasses. */
12973 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12975 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12976 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12977 in_charge_node
, integer_two_node
), 0);
12980 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12982 tree vb
= get_vbase
12983 (BINFO_TYPE (vbases
),
12984 TYPE_BINFO (current_class_type
));
12986 (build_scoped_method_call
12987 (current_class_ref
, vb
, dtor_identifier
,
12988 build_expr_list (NULL_TREE
, integer_zero_node
)));
12990 vbases
= TREE_CHAIN (vbases
);
12992 expand_end_cond ();
12995 do_pending_stack_adjust ();
12996 if (cond
!= integer_one_node
)
12997 expand_end_cond ();
13000 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
13002 virtual_size
= c_sizeof (current_class_type
);
13004 /* At the end, call delete if that's what's requested. */
13006 /* FDIS sez: At the point of definition of a virtual destructor
13007 (including an implicit definition), non-placement operator
13008 delete shall be looked up in the scope of the destructor's
13009 class and if found shall be accessible and unambiguous.
13011 This is somewhat unclear, but I take it to mean that if the
13012 class only defines placement deletes we don't do anything here.
13013 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
13014 for us if they ever try to delete one of these. */
13016 if (TYPE_GETS_REG_DELETE (current_class_type
)
13017 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13018 exprstmt
= build_op_delete_call
13019 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
13020 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
13022 exprstmt
= NULL_TREE
;
13026 cond
= build (BIT_AND_EXPR
, integer_type_node
,
13027 in_charge_node
, integer_one_node
);
13028 expand_start_cond (cond
, 0);
13029 expand_expr_stmt (exprstmt
);
13030 expand_end_cond ();
13033 /* End of destructor. */
13034 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
13035 poplevel (2, 0, 0); /* XXX change to 1 */
13037 /* Back to the top of destructor. */
13038 /* Don't execute destructor code if `this' is NULL. */
13042 /* If the dtor is empty, and we know there is not possible way we
13043 could use any vtable entries, before they are possibly set by
13044 a base class dtor, we don't have to setup the vtables, as we
13045 know that any base class dtoring will set up any vtables it
13046 needs. We avoid MI, because one base class dtor can do a
13047 virtual dispatch to an overridden function that would need to
13048 have a non-related vtable set up, we cannot avoid setting up
13049 vtables in that case. We could change this to see if there is
13050 just one vtable. */
13051 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13053 /* Make all virtual function table pointers in non-virtual base
13054 classes point to CURRENT_CLASS_TYPE's virtual function
13056 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13058 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13059 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13062 if (! ok_to_optimize_dtor
)
13064 cond
= build_binary_op (NE_EXPR
,
13065 current_class_ptr
, integer_zero_node
, 1);
13066 expand_start_cond (cond
, 0);
13069 insns
= get_insns ();
13072 last_parm_insn
= get_first_nonparm_insn ();
13073 if (last_parm_insn
== NULL_RTX
)
13074 last_parm_insn
= get_last_insn ();
13076 last_parm_insn
= previous_insn (last_parm_insn
);
13078 emit_insns_after (insns
, last_parm_insn
);
13080 if (! ok_to_optimize_dtor
)
13081 expand_end_cond ();
13083 else if (current_function_assigns_this
)
13085 /* Does not need to call emit_base_init, because
13086 that is done (if needed) just after assignment to this
13089 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13091 end_protect_partials ();
13092 expand_label (ctor_label
);
13093 ctor_label
= NULL_TREE
;
13097 decls
= getdecls ();
13098 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13099 poplevel (decls
!= NULL_TREE
, 0, 0);
13101 /* c_expand_return knows to return 'this' from a constructor. */
13102 c_expand_return (NULL_TREE
);
13104 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13105 && return_label
!= NULL_RTX
)
13106 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13108 current_function_assigns_this
= 0;
13109 current_function_just_assigned_this
= 0;
13110 base_init_expr
= NULL_TREE
;
13112 else if (DECL_CONSTRUCTOR_P (fndecl
))
13114 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13115 /* Allow constructor for a type to get a new instance of the object
13116 using `build_new'. */
13117 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13118 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13120 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13122 if (flag_this_is_variable
> 0)
13124 cond
= build_binary_op (EQ_EXPR
,
13125 current_class_ptr
, integer_zero_node
, 1);
13126 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13127 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13130 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13134 if (flag_this_is_variable
> 0)
13136 expand_start_cond (cond
, 0);
13137 expand_expr_stmt (thenclause
);
13138 expand_end_cond ();
13141 /* Emit insns from `emit_base_init' which sets up virtual
13142 function table pointer(s). */
13143 if (base_init_expr
)
13145 expand_expr_stmt (base_init_expr
);
13146 base_init_expr
= NULL_TREE
;
13149 insns
= get_insns ();
13152 /* This is where the body of the constructor begins. */
13154 emit_insns_after (insns
, last_parm_cleanup_insn
);
13156 end_protect_partials ();
13158 /* This is where the body of the constructor ends. */
13159 expand_label (ctor_label
);
13160 ctor_label
= NULL_TREE
;
13164 decls
= getdecls ();
13165 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13166 poplevel (decls
!= NULL_TREE
, 1, 0);
13169 /* c_expand_return knows to return 'this' from a constructor. */
13170 c_expand_return (NULL_TREE
);
13172 current_function_assigns_this
= 0;
13173 current_function_just_assigned_this
= 0;
13175 else if (DECL_MAIN_P (fndecl
))
13177 /* Make it so that `main' always returns 0 by default. */
13179 c_expand_return (integer_one_node
);
13181 c_expand_return (integer_zero_node
);
13184 else if (return_label
!= NULL_RTX
13185 && current_function_return_value
== NULL_TREE
13186 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13187 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13189 if (flag_exceptions
)
13190 expand_exception_blocks ();
13192 /* If this function is supposed to return a value, ensure that
13193 we do not fall into the cleanups by mistake. The end of our
13194 function will look like this:
13196 user code (may have return stmt somewhere)
13197 goto no_return_label
13202 NOTE_INSN_FUNCTION_END
13206 If the user omits a return stmt in the USER CODE section, we
13207 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13208 Otherwise, we won't. */
13209 if (no_return_label
)
13211 DECL_CONTEXT (no_return_label
) = fndecl
;
13212 DECL_INITIAL (no_return_label
) = error_mark_node
;
13213 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13214 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13215 expand_goto (no_return_label
);
13220 /* Remove the binding contour which is used
13221 to catch cleanup-generated temporaries. */
13222 expand_end_bindings (0, 0, 0);
13223 poplevel (0, 0, 0);
13225 /* Emit label at beginning of cleanup code for parameters. */
13226 emit_label (cleanup_label
);
13229 /* Get return value into register if that's where it's supposed to be. */
13230 if (original_result_rtx
)
13231 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13233 /* Finish building code that will trigger warnings if users forget
13234 to make their functions return values. */
13235 if (no_return_label
|| cleanup_label
)
13236 emit_jump (return_label
);
13237 if (no_return_label
)
13239 /* We don't need to call `expand_*_return' here because we
13240 don't need any cleanups here--this path of code is only
13241 for error checking purposes. */
13242 expand_label (no_return_label
);
13245 /* Generate rtl for function exit. */
13246 expand_function_end (input_filename
, lineno
, 1);
13249 /* This must come after expand_function_end because cleanups might
13250 have declarations (from inline functions) that need to go into
13251 this function's blocks. */
13252 if (current_binding_level
->parm_flag
!= 1)
13253 my_friendly_abort (122);
13254 poplevel (1, 0, 1);
13256 /* Reset scope for C++: if we were in the scope of a class,
13257 then when we finish this function, we are not longer so.
13258 This cannot be done until we know for sure that no more
13259 class members will ever be referenced in this function
13260 (i.e., calls to destructors). */
13261 if (current_class_name
)
13263 ctype
= current_class_type
;
13264 pop_nested_class (1);
13267 /* Must mark the RESULT_DECL as being in this function. */
13268 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13270 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13271 to the FUNCTION_DECL node itself. */
13272 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13274 if (! processing_template_decl
)
13276 int saved_flag_keep_inline_functions
=
13277 flag_keep_inline_functions
;
13279 /* So we can tell if jump_optimize sets it to 1. */
13282 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13283 && hack_decl_function_context (fndecl
))
13284 /* Trick rest_of_compilation into not deferring output of this
13285 function, even if it is inline, since the rtl_obstack for
13286 this function is the function_obstack of the enclosing
13287 function and will be deallocated when the enclosing
13288 function is gone. See save_tree_status. */
13289 flag_keep_inline_functions
= 1;
13291 /* Run the optimizers and output the assembler code for this
13294 if (DECL_ARTIFICIAL (fndecl
))
13296 /* Do we really *want* to inline this synthesized method? */
13298 int save_fif
= flag_inline_functions
;
13299 flag_inline_functions
= 1;
13301 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13302 will check our size. */
13303 DECL_INLINE (fndecl
) = 0;
13305 rest_of_compilation (fndecl
);
13306 flag_inline_functions
= save_fif
;
13309 rest_of_compilation (fndecl
);
13311 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13313 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13315 /* Set DECL_EXTERNAL so that assemble_external will be called as
13316 necessary. We'll clear it again in finish_file. */
13317 if (! DECL_EXTERNAL (fndecl
))
13318 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13319 DECL_EXTERNAL (fndecl
) = 1;
13320 mark_inline_for_output (fndecl
);
13323 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13324 note_debug_info_needed (ctype
);
13326 current_function_returns_null
|= can_reach_end
;
13328 /* Since we don't normally go through c_expand_return for constructors,
13329 this normally gets the wrong value.
13330 Also, named return values have their return codes emitted after
13331 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13332 if (DECL_CONSTRUCTOR_P (fndecl
)
13333 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13334 current_function_returns_null
= 0;
13336 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13337 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13338 else if ((warn_return_type
|| pedantic
)
13339 && current_function_returns_null
13340 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13342 /* If this function returns non-void and control can drop through,
13344 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13346 /* With just -W, complain only if function returns both with
13347 and without a value. */
13348 else if (extra_warnings
13349 && current_function_returns_value
&& current_function_returns_null
)
13350 warning ("this function may return with or without a value");
13355 /* Free all the tree nodes making up this function. */
13356 /* Switch back to allocating nodes permanently
13357 until we start another function. */
13358 if (processing_template_decl
)
13360 --minimal_parse_mode
;
13361 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13365 permanent_allocation (1);
13367 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13371 /* Stop pointing to the local nodes about to be freed. */
13372 /* But DECL_INITIAL must remain nonzero so we know this
13373 was an actual function definition. */
13374 DECL_INITIAL (fndecl
) = error_mark_node
;
13375 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13376 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13379 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13380 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13381 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13382 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13386 /* Let the error reporting routines know that we're outside a
13387 function. For a nested function, this value is used in
13388 pop_cp_function_context and then reset via pop_function_context. */
13389 current_function_decl
= NULL_TREE
;
13392 named_label_uses
= NULL
;
13393 current_class_ptr
= NULL_TREE
;
13394 current_class_ref
= NULL_TREE
;
13397 /* Create the FUNCTION_DECL for a function definition.
13398 LINE1 is the line number that the definition absolutely begins on.
13399 LINE2 is the line number that the name of the function appears on.
13400 DECLSPECS and DECLARATOR are the parts of the declaration;
13401 they describe the return type and the name of the function,
13402 but twisted together in a fashion that parallels the syntax of C.
13404 This function creates a binding context for the function body
13405 as well as setting up the FUNCTION_DECL in current_function_decl.
13407 Returns a FUNCTION_DECL on success.
13409 If the DECLARATOR is not suitable for a function (it defines a datum
13410 instead), we return 0, which tells yyparse to report a parse error.
13412 May return void_type_node indicating that this method is actually
13413 a friend. See grokfield for more details.
13415 Came here with a `.pushlevel' .
13417 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13418 CHANGES TO CODE IN `grokfield'. */
13421 start_method (declspecs
, declarator
)
13422 tree declarator
, declspecs
;
13424 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13427 /* Something too ugly to handle. */
13428 if (fndecl
== NULL_TREE
)
13431 /* Pass friends other than inline friend functions back. */
13432 if (fndecl
== void_type_node
)
13435 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13436 /* Not a function, tell parser to report parse error. */
13439 if (IS_SIGNATURE (current_class_type
))
13440 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13442 if (DECL_IN_AGGR_P (fndecl
))
13444 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13446 if (DECL_CONTEXT (fndecl
)
13447 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13448 cp_error ("`%D' is already defined in class %s", fndecl
,
13449 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13451 return void_type_node
;
13454 DECL_THIS_INLINE (fndecl
) = 1;
13456 if (flag_default_inline
)
13457 DECL_INLINE (fndecl
) = 1;
13459 /* We process method specializations in finish_struct_1. */
13460 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13461 fndecl
= push_template_decl (fndecl
);
13463 /* We read in the parameters on the maybepermanent_obstack,
13464 but we won't be getting back to them until after we
13465 may have clobbered them. So the call to preserve_data
13466 will keep them safe. */
13469 if (! DECL_FRIEND_P (fndecl
))
13471 if (TREE_CHAIN (fndecl
))
13473 fndecl
= copy_node (fndecl
);
13474 TREE_CHAIN (fndecl
) = NULL_TREE
;
13477 if (DECL_CONSTRUCTOR_P (fndecl
))
13479 if (! grok_ctor_properties (current_class_type
, fndecl
))
13480 return void_type_node
;
13482 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13483 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13486 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13488 /* Make a place for the parms */
13490 current_binding_level
->parm_flag
= 1;
13492 DECL_IN_AGGR_P (fndecl
) = 1;
13496 /* Go through the motions of finishing a function definition.
13497 We don't compile this method until after the whole class has
13500 FINISH_METHOD must return something that looks as though it
13501 came from GROKFIELD (since we are defining a method, after all).
13503 This is called after parsing the body of the function definition.
13504 STMTS is the chain of statements that makes up the function body.
13506 DECL is the ..._DECL that `start_method' provided. */
13509 finish_method (decl
)
13512 register tree fndecl
= decl
;
13515 register tree link
;
13517 if (decl
== void_type_node
)
13520 old_initial
= DECL_INITIAL (fndecl
);
13522 /* Undo the level for the parms (from start_method).
13523 This is like poplevel, but it causes nothing to be
13524 saved. Saving information here confuses symbol-table
13525 output routines. Besides, this information will
13526 be correctly output when this method is actually
13529 /* Clear out the meanings of the local variables of this level;
13530 also record in each decl which block it belongs to. */
13532 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13534 if (DECL_NAME (link
) != NULL_TREE
)
13535 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13536 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13537 DECL_CONTEXT (link
) = NULL_TREE
;
13540 /* Restore all name-meanings of the outer levels
13541 that were shadowed by this level. */
13543 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13544 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13545 for (link
= current_binding_level
->class_shadowed
;
13546 link
; link
= TREE_CHAIN (link
))
13547 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13548 for (link
= current_binding_level
->type_shadowed
;
13549 link
; link
= TREE_CHAIN (link
))
13550 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13552 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13553 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13554 current_binding_level
->parm_flag
,
13555 current_binding_level
->keep
);
13557 poplevel (0, 0, 0);
13559 DECL_INITIAL (fndecl
) = old_initial
;
13561 /* We used to check if the context of FNDECL was different from
13562 current_class_type as another way to get inside here. This didn't work
13563 for String.cc in libg++. */
13564 if (DECL_FRIEND_P (fndecl
))
13566 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13567 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13568 decl
= void_type_node
;
13574 /* Called when a new struct TYPE is defined.
13575 If this structure or union completes the type of any previous
13576 variable declaration, lay it out and output its rtl. */
13579 hack_incomplete_structures (type
)
13584 if (current_binding_level
->incomplete
== NULL_TREE
)
13587 if (!type
) /* Don't do this for class templates. */
13590 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13592 tree decl
= TREE_VALUE (*list
);
13593 if ((decl
&& TREE_TYPE (decl
) == type
)
13594 || (TREE_TYPE (decl
)
13595 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13596 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13598 int toplevel
= toplevel_bindings_p ();
13599 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13600 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13601 layout_type (TREE_TYPE (decl
));
13602 layout_decl (decl
, 0);
13603 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13607 expand_decl (decl
);
13608 cleanup
= maybe_build_cleanup (decl
);
13609 expand_decl_init (decl
);
13610 if (! expand_decl_cleanup (decl
, cleanup
))
13611 cp_error ("parser lost in parsing declaration of `%D'",
13614 *list
= TREE_CHAIN (*list
);
13617 list
= &TREE_CHAIN (*list
);
13621 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13622 See build_delete for information about AUTO_DELETE.
13624 Don't build these on the momentary obstack; they must live
13625 the life of the binding contour. */
13628 maybe_build_cleanup_1 (decl
, auto_delete
)
13629 tree decl
, auto_delete
;
13631 tree type
= TREE_TYPE (decl
);
13632 if (TYPE_NEEDS_DESTRUCTOR (type
))
13634 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13637 if (TREE_CODE (decl
) != PARM_DECL
)
13638 temp
= suspend_momentary ();
13640 if (TREE_CODE (type
) == ARRAY_TYPE
)
13644 mark_addressable (decl
);
13645 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13648 /* Optimize for space over speed here. */
13649 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13650 || flag_expensive_optimizations
)
13651 flags
|= LOOKUP_NONVIRTUAL
;
13653 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13655 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13656 && ! TYPE_HAS_DESTRUCTOR (type
))
13657 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13658 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13660 if (TREE_CODE (decl
) != PARM_DECL
)
13661 resume_momentary (temp
);
13668 /* If DECL is of a type which needs a cleanup, build that cleanup
13669 here. The cleanup does free the storage with a call to delete. */
13672 maybe_build_cleanup_and_delete (decl
)
13675 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13678 /* If DECL is of a type which needs a cleanup, build that cleanup
13679 here. The cleanup does not free the storage with a call a delete. */
13682 maybe_build_cleanup (decl
)
13685 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13688 /* Expand a C++ expression at the statement level.
13689 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13690 The C++ type checker should get all of these out when
13691 expressions are combined with other, type-providing, expressions,
13692 leaving only orphan expressions, such as:
13694 &class::bar; / / takes its address, but does nothing with it. */
13697 cplus_expand_expr_stmt (exp
)
13700 if (processing_template_decl
)
13702 add_tree (build_min_nt (EXPR_STMT
, exp
));
13706 /* Arrange for all temps to disappear. */
13707 expand_start_target_temps ();
13709 if (TREE_TYPE (exp
) == unknown_type_node
)
13711 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13712 error ("address of overloaded function with no contextual type information");
13713 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13714 warning ("useless reference to a member function name, did you forget the ()?");
13718 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13720 cp_warning ("reference, not call, to function `%D'", exp
);
13721 warning ("at this point in file");
13725 /* We should do this eventually, but right now this causes regex.o from
13726 libg++ to miscompile, and tString to core dump. */
13727 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13730 /* Strip unused implicit INDIRECT_REFs of references. */
13731 if (TREE_CODE (exp
) == INDIRECT_REF
13732 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13733 exp
= TREE_OPERAND (exp
, 0);
13735 /* If we don't do this, we end up down inside expand_expr
13736 trying to do TYPE_MODE on the ERROR_MARK, and really
13737 go outside the bounds of the type. */
13738 if (exp
!= error_mark_node
)
13739 expand_expr_stmt (break_out_cleanups (exp
));
13742 /* Clean up any pending cleanups. This happens when a function call
13743 returns a cleanup-needing value that nobody uses. */
13744 expand_end_target_temps ();
13747 /* When a stmt has been parsed, this function is called.
13749 Currently, this function only does something within a
13750 constructor's scope: if a stmt has just assigned to this,
13751 and we are in a derived class, we call `emit_base_init'. */
13756 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13759 if (current_function_assigns_this
13760 || ! current_function_just_assigned_this
)
13762 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13764 /* Constructors must wait until we are out of control
13765 zones before calling base constructors. */
13766 if (cond_stack
|| loop_stack
|| case_stack
)
13768 expand_expr_stmt (base_init_expr
);
13769 check_base_init (current_class_type
);
13771 current_function_assigns_this
= 1;
13774 /* Change a static member function definition into a FUNCTION_TYPE, instead
13775 of the METHOD_TYPE that we create when it's originally parsed.
13777 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13778 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13779 other decls. Either pass the addresses of local variables or NULL. */
13782 revert_static_member_fn (decl
, fn
, argtypes
)
13783 tree
*decl
, *fn
, *argtypes
;
13786 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13787 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13789 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13790 cp_error ("static member function `%#D' declared const", *decl
);
13791 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13792 cp_error ("static member function `%#D' declared volatile", *decl
);
13794 args
= TREE_CHAIN (args
);
13795 tmp
= build_function_type (TREE_TYPE (function
), args
);
13796 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13797 TYPE_VOLATILE (function
));
13798 tmp
= build_exception_variant (tmp
,
13799 TYPE_RAISES_EXCEPTIONS (function
));
13800 TREE_TYPE (*decl
) = tmp
;
13801 if (DECL_ARGUMENTS (*decl
))
13802 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13803 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13811 id_in_current_class (id
)
13814 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13821 int warn_about_return_type
;
13823 int just_assigned_this
;
13825 int temp_name_counter
;
13827 tree shadowed_labels
;
13830 rtx last_dtor_insn
;
13831 rtx last_parm_cleanup_insn
;
13832 tree base_init_list
;
13833 tree member_init_list
;
13834 tree base_init_expr
;
13835 tree current_class_ptr
;
13836 tree current_class_ref
;
13838 struct cp_function
*next
;
13839 struct binding_level
*binding_level
;
13840 int static_labelno
;
13843 static struct cp_function
*cp_function_chain
;
13845 extern int temp_name_counter
;
13847 /* Save and reinitialize the variables
13848 used during compilation of a C++ function. */
13851 push_cp_function_context (context
)
13854 struct cp_function
*p
13855 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13857 push_function_context_to (context
);
13859 p
->next
= cp_function_chain
;
13860 cp_function_chain
= p
;
13862 p
->named_labels
= named_labels
;
13863 p
->shadowed_labels
= shadowed_labels
;
13864 p
->returns_value
= current_function_returns_value
;
13865 p
->returns_null
= current_function_returns_null
;
13866 p
->warn_about_return_type
= warn_about_return_type
;
13867 p
->binding_level
= current_binding_level
;
13868 p
->ctor_label
= ctor_label
;
13869 p
->dtor_label
= dtor_label
;
13870 p
->last_dtor_insn
= last_dtor_insn
;
13871 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13872 p
->assigns_this
= current_function_assigns_this
;
13873 p
->just_assigned_this
= current_function_just_assigned_this
;
13874 p
->parms_stored
= current_function_parms_stored
;
13875 p
->result_rtx
= original_result_rtx
;
13876 p
->base_init_expr
= base_init_expr
;
13877 p
->temp_name_counter
= temp_name_counter
;
13878 p
->base_init_list
= current_base_init_list
;
13879 p
->member_init_list
= current_member_init_list
;
13880 p
->current_class_ptr
= current_class_ptr
;
13881 p
->current_class_ref
= current_class_ref
;
13882 p
->static_labelno
= static_labelno
;
13885 /* Restore the variables used during compilation of a C++ function. */
13888 pop_cp_function_context (context
)
13891 struct cp_function
*p
= cp_function_chain
;
13894 /* Bring back all the labels that were shadowed. */
13895 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13896 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13897 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13898 TREE_VALUE (link
));
13900 pop_function_context_from (context
);
13902 cp_function_chain
= p
->next
;
13904 named_labels
= p
->named_labels
;
13905 shadowed_labels
= p
->shadowed_labels
;
13906 current_function_returns_value
= p
->returns_value
;
13907 current_function_returns_null
= p
->returns_null
;
13908 warn_about_return_type
= p
->warn_about_return_type
;
13909 current_binding_level
= p
->binding_level
;
13910 ctor_label
= p
->ctor_label
;
13911 dtor_label
= p
->dtor_label
;
13912 last_dtor_insn
= p
->last_dtor_insn
;
13913 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13914 current_function_assigns_this
= p
->assigns_this
;
13915 current_function_just_assigned_this
= p
->just_assigned_this
;
13916 current_function_parms_stored
= p
->parms_stored
;
13917 original_result_rtx
= p
->result_rtx
;
13918 base_init_expr
= p
->base_init_expr
;
13919 temp_name_counter
= p
->temp_name_counter
;
13920 current_base_init_list
= p
->base_init_list
;
13921 current_member_init_list
= p
->member_init_list
;
13922 current_class_ptr
= p
->current_class_ptr
;
13923 current_class_ref
= p
->current_class_ref
;
13924 static_labelno
= p
->static_labelno
;
13932 return function_depth
!= 0;