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
;
563 /* Allocate a level of searching. */
567 push_decl_level (stack
, obstack
)
568 struct stack_level
*stack
;
569 struct obstack
*obstack
;
571 struct stack_level tem
;
574 return push_stack_level (obstack
, (char *)&tem
, sizeof (tem
));
577 /* For each binding contour we allocate a binding_level structure
578 which records the names defined in that contour.
581 1) one for each function definition,
582 where internal declarations of the parameters appear.
583 2) one for each compound statement,
584 to record its declarations.
586 The current meaning of a name can be found by searching the levels
587 from the current one out to the global one.
589 Off to the side, may be the class_binding_level. This exists only
590 to catch class-local declarations. It is otherwise nonexistent.
592 Also there may be binding levels that catch cleanups that must be
593 run when exceptions occur. */
595 /* Note that the information in the `names' component of the global contour
596 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
600 /* A chain of _DECL nodes for all variables, constants, functions,
601 and typedef types. These are in the reverse of the order
605 /* A list of structure, union and enum definitions, for looking up
607 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
608 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
609 or ENUMERAL_TYPE node.
611 C++: the TREE_VALUE nodes can be simple types for
612 component_bindings. */
615 /* A list of USING_DECL nodes. */
618 /* A list of used namespaces. PURPOSE is the namespace,
619 VALUE the common ancestor with this binding_level's namespace. */
620 tree using_directives
;
622 /* For each level, a list of shadowed outer-level local definitions
623 to be restored when this level is popped.
624 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
625 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
628 /* Same, for IDENTIFIER_CLASS_VALUE. */
631 /* Same, for IDENTIFIER_TYPE_VALUE. */
634 /* For each level (except not the global one),
635 a chain of BLOCK nodes for all the levels
636 that were entered and exited one level down. */
639 /* The BLOCK node for this level, if one has been preallocated.
640 If 0, the BLOCK is allocated (if needed) when the level is popped. */
643 /* The binding level which this one is contained in (inherits from). */
644 struct binding_level
*level_chain
;
646 /* List of decls in `names' that have incomplete
647 structure or union types. */
650 /* List of VAR_DECLS saved from a previous for statement.
651 These would be dead in ANSI-conforming code, but might
652 be referenced in ARM-era code. */
653 tree dead_vars_from_for
;
655 /* 1 for the level that holds the parameters of a function.
656 2 for the level that holds a class declaration.
657 3 for levels that hold parameter declarations. */
658 unsigned parm_flag
: 4;
660 /* 1 means make a BLOCK for this level regardless of all else.
661 2 for temporary binding contours created by the compiler. */
664 /* Nonzero if this level "doesn't exist" for tags. */
665 unsigned tag_transparent
: 1;
667 /* Nonzero if this level can safely have additional
668 cleanup-needing variables added to it. */
669 unsigned more_cleanups_ok
: 1;
670 unsigned have_cleanups
: 1;
672 /* Nonzero if this level is for storing the decls for template
673 parameters and generic decls; these decls will be discarded and
674 replaced with a TEMPLATE_DECL. */
675 unsigned pseudo_global
: 1;
677 /* This is set for a namespace binding level. */
678 unsigned namespace_p
: 1;
680 /* True if this level is that of a for-statement where we need to
681 worry about ambiguous (ARM or ANSI) scope rules. */
682 unsigned is_for_scope
: 1;
684 /* Two bits left for this word. */
686 #if defined(DEBUG_CP_BINDING_LEVELS)
687 /* Binding depth at which this level began. */
688 unsigned binding_depth
;
689 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
692 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
694 /* The (non-class) binding level currently in effect. */
696 static struct binding_level
*current_binding_level
;
698 /* The binding level of the current class, if any. */
700 static struct binding_level
*class_binding_level
;
702 /* The current (class or non-class) binding level currently in effect. */
704 #define inner_binding_level \
705 (class_binding_level ? class_binding_level : current_binding_level)
707 /* A chain of binding_level structures awaiting reuse. */
709 static struct binding_level
*free_binding_level
;
711 /* The outermost binding level, for names of file scope.
712 This is created when the compiler is started and exists
713 through the entire run. */
715 static struct binding_level
*global_binding_level
;
717 /* Binding level structures are initialized by copying this one. */
719 static struct binding_level clear_binding_level
;
721 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
723 static int keep_next_level_flag
;
725 #if defined(DEBUG_CP_BINDING_LEVELS)
726 static int binding_depth
= 0;
727 static int is_class_level
= 0;
734 for (i
= 0; i
< binding_depth
*2; i
++)
737 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
739 static tree pushdecl_with_scope
PROTO((tree
, struct binding_level
*));
742 push_binding_level (newlevel
, tag_transparent
, keep
)
743 struct binding_level
*newlevel
;
744 int tag_transparent
, keep
;
746 /* Add this level to the front of the chain (stack) of levels that
748 *newlevel
= clear_binding_level
;
749 if (class_binding_level
)
751 newlevel
->level_chain
= class_binding_level
;
752 class_binding_level
= (struct binding_level
*)0;
756 newlevel
->level_chain
= current_binding_level
;
758 current_binding_level
= newlevel
;
759 newlevel
->tag_transparent
= tag_transparent
;
760 newlevel
->more_cleanups_ok
= 1;
761 newlevel
->keep
= keep
;
762 #if defined(DEBUG_CP_BINDING_LEVELS)
763 newlevel
->binding_depth
= binding_depth
;
765 fprintf (stderr
, "push %s level 0x%08x line %d\n",
766 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
769 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
775 if (class_binding_level
)
776 current_binding_level
= class_binding_level
;
778 if (global_binding_level
)
780 /* Cannot pop a level, if there are none left to pop. */
781 if (current_binding_level
== global_binding_level
)
782 my_friendly_abort (123);
784 /* Pop the current level, and free the structure for reuse. */
785 #if defined(DEBUG_CP_BINDING_LEVELS)
788 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
789 (is_class_level
) ? "class" : "block",
790 current_binding_level
, lineno
);
791 if (is_class_level
!= (current_binding_level
== class_binding_level
))
794 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
797 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
799 register struct binding_level
*level
= current_binding_level
;
800 current_binding_level
= current_binding_level
->level_chain
;
801 level
->level_chain
= free_binding_level
;
802 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
803 if (level
->binding_depth
!= binding_depth
)
805 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
806 free_binding_level
= level
;
808 class_binding_level
= current_binding_level
;
809 if (class_binding_level
->parm_flag
!= 2)
810 class_binding_level
= 0;
811 while (current_binding_level
->parm_flag
== 2)
812 current_binding_level
= current_binding_level
->level_chain
;
817 suspend_binding_level ()
819 if (class_binding_level
)
820 current_binding_level
= class_binding_level
;
822 if (global_binding_level
)
824 /* Cannot suspend a level, if there are none left to suspend. */
825 if (current_binding_level
== global_binding_level
)
826 my_friendly_abort (123);
828 /* Suspend the current level. */
829 #if defined(DEBUG_CP_BINDING_LEVELS)
832 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
833 (is_class_level
) ? "class" : "block",
834 current_binding_level
, lineno
);
835 if (is_class_level
!= (current_binding_level
== class_binding_level
))
838 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
841 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
843 current_binding_level
= current_binding_level
->level_chain
;
844 class_binding_level
= current_binding_level
;
845 if (class_binding_level
->parm_flag
!= 2)
846 class_binding_level
= 0;
847 while (current_binding_level
->parm_flag
== 2)
848 current_binding_level
= current_binding_level
->level_chain
;
853 resume_binding_level (b
)
854 struct binding_level
*b
;
856 /* Resuming binding levels is meant only for namespaces,
857 and those cannot nest into classes. */
858 my_friendly_assert(!class_binding_level
, 386);
859 /* Also, resuming a non-directly nested namespace is a no-no. */
860 my_friendly_assert(b
->level_chain
== current_binding_level
, 386);
861 current_binding_level
= b
;
862 #if defined(DEBUG_CP_BINDING_LEVELS)
863 b
->binding_depth
= binding_depth
;
865 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
866 (is_class_level
) ? "class" : "block", b
, lineno
);
869 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
872 /* Create a new `struct binding_level'. */
875 struct binding_level
*
876 make_binding_level ()
879 return (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
882 /* Nonzero if we are currently in the global binding level. */
887 return current_binding_level
== global_binding_level
;
890 /* Nonzero if we are currently in a toplevel binding level. This
891 means either the global binding level or a namespace in a toplevel
893 Since there are no non-toplevel namespace levels, this really
894 means any namespace or pseudo-global level. */
897 toplevel_bindings_p ()
899 return current_binding_level
->namespace_p
900 || current_binding_level
->pseudo_global
;
903 /* Nonzero if this is a namespace scope. */
906 namespace_bindings_p ()
908 return current_binding_level
->namespace_p
;
914 keep_next_level_flag
= 1;
917 /* Nonzero if the current level needs to have a BLOCK made. */
922 return (current_binding_level
->blocks
!= NULL_TREE
923 || current_binding_level
->keep
924 || current_binding_level
->names
!= NULL_TREE
925 || (current_binding_level
->tags
!= NULL_TREE
926 && !current_binding_level
->tag_transparent
));
929 /* Identify this binding level as a level of parameters. */
932 declare_parm_level ()
934 current_binding_level
->parm_flag
= 1;
938 declare_pseudo_global_level ()
940 current_binding_level
->pseudo_global
= 1;
944 declare_namespace_level ()
946 current_binding_level
->namespace_p
= 1;
950 pseudo_global_level_p ()
952 return current_binding_level
->pseudo_global
;
956 set_class_shadows (shadows
)
959 class_binding_level
->class_shadowed
= shadows
;
962 /* Enter a new binding level.
963 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
964 not for that of tags. */
967 pushlevel (tag_transparent
)
970 register struct binding_level
*newlevel
= NULL_BINDING_LEVEL
;
972 /* If this is the top level of a function,
973 just make sure that NAMED_LABELS is 0.
974 They should have been set to 0 at the end of the previous function. */
976 if (current_binding_level
== global_binding_level
)
977 my_friendly_assert (named_labels
== NULL_TREE
, 134);
979 /* Reuse or create a struct for this binding level. */
981 #if defined(DEBUG_CP_BINDING_LEVELS)
983 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
984 if (free_binding_level
)
985 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
987 newlevel
= free_binding_level
;
988 free_binding_level
= free_binding_level
->level_chain
;
992 newlevel
= make_binding_level ();
995 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
996 GNU_xref_start_scope ((HOST_WIDE_INT
) newlevel
);
997 keep_next_level_flag
= 0;
1001 note_level_for_for ()
1003 current_binding_level
->is_for_scope
= 1;
1007 pushlevel_temporary (tag_transparent
)
1008 int tag_transparent
;
1010 pushlevel (tag_transparent
);
1011 current_binding_level
->keep
= 2;
1014 /* Note we don't call push_momentary() here. Otherwise, it would cause
1015 cleanups to be allocated on the momentary obstack, and they will be
1016 overwritten by the next statement. */
1018 expand_start_bindings (0);
1021 /* Exit a binding level.
1022 Pop the level off, and restore the state of the identifier-decl mappings
1023 that were in effect when this level was entered.
1025 If KEEP == 1, this level had explicit declarations, so
1026 and create a "block" (a BLOCK node) for the level
1027 to record its declarations and subblocks for symbol table output.
1029 If KEEP == 2, this level's subblocks go to the front,
1030 not the back of the current binding level. This happens,
1031 for instance, when code for constructors and destructors
1032 need to generate code at the end of a function which must
1033 be moved up to the front of the function.
1035 If FUNCTIONBODY is nonzero, this level is the body of a function,
1036 so create a block as if KEEP were set and also clear out all
1039 If REVERSE is nonzero, reverse the order of decls before putting
1040 them into the BLOCK. */
1043 poplevel (keep
, reverse
, functionbody
)
1049 /* The chain of decls was accumulated in reverse order.
1050 Put it into forward order, just for cleanliness. */
1052 int tmp
= functionbody
;
1053 int real_functionbody
= current_binding_level
->keep
== 2
1054 ? ((functionbody
= 0), tmp
) : functionbody
;
1055 tree tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
1056 tree subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
1057 tree block
= NULL_TREE
;
1059 int block_previously_created
;
1061 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
1062 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
1063 current_binding_level
->parm_flag
,
1064 current_binding_level
->keep
);
1066 if (current_binding_level
->keep
== 1)
1069 /* Get the decls in the order they were written.
1070 Usually current_binding_level->names is in reverse order.
1071 But parameter decls were previously put in forward order. */
1074 current_binding_level
->names
1075 = decls
= nreverse (current_binding_level
->names
);
1077 decls
= current_binding_level
->names
;
1079 /* Output any nested inline functions within this block
1080 if they weren't already output. */
1082 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1083 if (TREE_CODE (decl
) == FUNCTION_DECL
1084 && ! TREE_ASM_WRITTEN (decl
)
1085 && DECL_INITIAL (decl
) != NULL_TREE
1086 && TREE_ADDRESSABLE (decl
)
1087 && decl_function_context (decl
) == current_function_decl
)
1089 /* If this decl was copied from a file-scope decl
1090 on account of a block-scope extern decl,
1091 propagate TREE_ADDRESSABLE to the file-scope decl. */
1092 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1093 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1096 push_function_context ();
1097 output_inline_function (decl
);
1098 pop_function_context ();
1102 /* If there were any declarations or structure tags in that level,
1103 or if this level is a function body,
1104 create a BLOCK to record them for the life of this function. */
1107 block_previously_created
= (current_binding_level
->this_block
!= NULL_TREE
);
1108 if (block_previously_created
)
1109 block
= current_binding_level
->this_block
;
1110 else if (keep
== 1 || functionbody
)
1111 block
= make_node (BLOCK
);
1112 if (block
!= NULL_TREE
)
1114 if (block_previously_created
)
1116 if (decls
|| tags
|| subblocks
)
1118 if (BLOCK_VARS (block
) || BLOCK_TYPE_TAGS (block
))
1120 warning ("internal compiler error: debugging info corrupted");
1122 BLOCK_VARS (block
) = decls
;
1123 BLOCK_TYPE_TAGS (block
) = tags
;
1125 /* We can have previous subblocks and new subblocks when
1126 doing fixup_gotos with complex cleanups. We chain the new
1127 subblocks onto the end of any pre-existing subblocks. */
1128 BLOCK_SUBBLOCKS (block
) = chainon (BLOCK_SUBBLOCKS (block
),
1131 /* If we created the block earlier on, and we are just
1132 diddling it now, then it already should have a proper
1133 BLOCK_END_NOTE value associated with it. */
1137 BLOCK_VARS (block
) = decls
;
1138 BLOCK_TYPE_TAGS (block
) = tags
;
1139 BLOCK_SUBBLOCKS (block
) = subblocks
;
1140 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1141 remember_end_note (block
);
1145 /* In each subblock, record that this is its superior. */
1148 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1149 BLOCK_SUPERCONTEXT (link
) = block
;
1151 /* Clear out the meanings of the local variables of this level. */
1153 if (current_binding_level
->is_for_scope
&& flag_new_for_scope
== 1)
1155 struct binding_level
*outer
= current_binding_level
->level_chain
;
1156 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1158 if (TREE_CODE (link
) == VAR_DECL
)
1159 DECL_DEAD_FOR_LOCAL (link
) = 1;
1161 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1164 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1165 'for' scoping semantics. */
1167 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1169 tree id
= TREE_PURPOSE (link
);
1170 tree decl
= IDENTIFIER_LOCAL_VALUE (id
);
1172 if (decl
&& DECL_DEAD_FOR_LOCAL (decl
))
1174 /* In this case keep the dead for-decl visible,
1175 but remember what (if anything) it shadowed. */
1176 DECL_SHADOWED_FOR_VAR (decl
) = TREE_VALUE (link
);
1177 TREE_CHAIN (decl
) = outer
->dead_vars_from_for
;
1178 outer
->dead_vars_from_for
= decl
;
1181 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VALUE (link
);
1184 else /* Not special for scope. */
1186 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1188 if (DECL_NAME (link
) != NULL_TREE
)
1190 /* If the ident. was used or addressed via a local extern decl,
1191 don't forget that fact. */
1192 if (DECL_EXTERNAL (link
))
1194 if (TREE_USED (link
))
1195 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1196 if (TREE_ADDRESSABLE (link
))
1197 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1199 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1203 /* Restore all name-meanings of the outer levels
1204 that were shadowed by this level. */
1206 for (link
= current_binding_level
->shadowed
;
1207 link
; link
= TREE_CHAIN (link
))
1208 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1210 /* We first restore the regular decls and *then* the dead_vars_from_for
1211 to handle this case:
1215 for (int i; ; ) { ...} // i#2
1219 In this case, we want remove the binding for i#3, restoring
1220 that of i#2. Then we want to remove the binding for i#2,
1221 and restore that of i#1. */
1223 link
= current_binding_level
->dead_vars_from_for
;
1224 for (; link
!= NULL_TREE
; link
= TREE_CHAIN (link
))
1226 tree id
= DECL_NAME (link
);
1227 if (IDENTIFIER_LOCAL_VALUE (id
) == link
)
1228 IDENTIFIER_LOCAL_VALUE (id
) = DECL_SHADOWED_FOR_VAR (link
);
1231 for (link
= current_binding_level
->class_shadowed
;
1232 link
; link
= TREE_CHAIN (link
))
1233 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1234 for (link
= current_binding_level
->type_shadowed
;
1235 link
; link
= TREE_CHAIN (link
))
1236 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
1239 /* If the level being exited is the top level of a function,
1240 check over all the labels. */
1244 /* If this is the top level block of a function,
1245 the vars are the function's parameters.
1246 Don't leave them in the BLOCK because they are
1247 found in the FUNCTION_DECL instead. */
1249 BLOCK_VARS (block
) = 0;
1251 /* Clear out the definitions of all label names,
1252 since their scopes end here. */
1254 for (link
= named_labels
; link
; link
= TREE_CHAIN (link
))
1256 register tree label
= TREE_VALUE (link
);
1258 if (DECL_INITIAL (label
) == NULL_TREE
)
1260 cp_error_at ("label `%D' used but not defined", label
);
1261 /* Avoid crashing later. */
1262 define_label (input_filename
, 1, DECL_NAME (label
));
1264 else if (warn_unused
&& !TREE_USED (label
))
1265 cp_warning_at ("label `%D' defined but not used", label
);
1266 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), NULL_TREE
);
1268 /* Put the labels into the "variables" of the
1269 top-level block, so debugger can see them. */
1270 TREE_CHAIN (label
) = BLOCK_VARS (block
);
1271 BLOCK_VARS (block
) = label
;
1274 named_labels
= NULL_TREE
;
1277 /* Any uses of undefined labels now operate under constraints
1278 of next binding contour. */
1280 struct binding_level
*level_chain
;
1281 level_chain
= current_binding_level
->level_chain
;
1284 struct named_label_list
*labels
;
1285 for (labels
= named_label_uses
; labels
; labels
= labels
->next
)
1286 if (labels
->binding_level
== current_binding_level
)
1288 labels
->binding_level
= level_chain
;
1289 labels
->names_in_scope
= level_chain
->names
;
1294 tmp
= current_binding_level
->keep
;
1296 pop_binding_level ();
1298 DECL_INITIAL (current_function_decl
) = block
;
1301 if (!block_previously_created
)
1302 current_binding_level
->blocks
1303 = chainon (current_binding_level
->blocks
, block
);
1305 /* If we did not make a block for the level just exited,
1306 any blocks made for inner levels
1307 (since they cannot be recorded as subblocks in that level)
1308 must be carried forward so they will later become subblocks
1309 of something else. */
1313 current_binding_level
->blocks
1314 = chainon (subblocks
, current_binding_level
->blocks
);
1316 current_binding_level
->blocks
1317 = chainon (current_binding_level
->blocks
, subblocks
);
1320 /* Take care of compiler's internal binding structures. */
1323 expand_end_bindings (getdecls (), keep
, 1);
1324 /* Each and every BLOCK node created here in `poplevel' is important
1325 (e.g. for proper debugging information) so if we created one
1326 earlier, mark it as "used". */
1328 TREE_USED (block
) = 1;
1329 block
= poplevel (keep
, reverse
, real_functionbody
);
1332 /* Each and every BLOCK node created here in `poplevel' is important
1333 (e.g. for proper debugging information) so if we created one
1334 earlier, mark it as "used". */
1336 TREE_USED (block
) = 1;
1340 /* Delete the node BLOCK from the current binding level.
1341 This is used for the block inside a stmt expr ({...})
1342 so that the block can be reinserted where appropriate. */
1345 delete_block (block
)
1349 if (current_binding_level
->blocks
== block
)
1350 current_binding_level
->blocks
= TREE_CHAIN (block
);
1351 for (t
= current_binding_level
->blocks
; t
;)
1353 if (TREE_CHAIN (t
) == block
)
1354 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1358 TREE_CHAIN (block
) = NULL_TREE
;
1359 /* Clear TREE_USED which is always set by poplevel.
1360 The flag is set again if insert_block is called. */
1361 TREE_USED (block
) = 0;
1364 /* Insert BLOCK at the end of the list of subblocks of the
1365 current binding level. This is used when a BIND_EXPR is expanded,
1366 to handle the BLOCK node inside the BIND_EXPR. */
1369 insert_block (block
)
1372 TREE_USED (block
) = 1;
1373 current_binding_level
->blocks
1374 = chainon (current_binding_level
->blocks
, block
);
1377 /* Set the BLOCK node for the innermost scope
1378 (the one we are currently in). */
1382 register tree block
;
1384 current_binding_level
->this_block
= block
;
1387 /* Do a pushlevel for class declarations. */
1392 register struct binding_level
*newlevel
;
1394 /* Reuse or create a struct for this binding level. */
1395 #if defined(DEBUG_CP_BINDING_LEVELS)
1397 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1398 if (free_binding_level
)
1399 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1401 newlevel
= free_binding_level
;
1402 free_binding_level
= free_binding_level
->level_chain
;
1406 newlevel
= make_binding_level ();
1409 #if defined(DEBUG_CP_BINDING_LEVELS)
1411 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1413 push_binding_level (newlevel
, 0, 0);
1415 decl_stack
= push_decl_level (decl_stack
, &decl_obstack
);
1416 class_binding_level
= current_binding_level
;
1417 class_binding_level
->parm_flag
= 2;
1418 /* We have just pushed into a new binding level. Now, fake out the rest
1419 of the compiler. Set the `current_binding_level' back to point to
1420 the most closely containing non-class binding level. */
1423 current_binding_level
= current_binding_level
->level_chain
;
1425 while (current_binding_level
->parm_flag
== 2);
1428 /* ...and a poplevel for class declarations. FORCE is used to force
1429 clearing out of CLASS_VALUEs after a class definition. */
1432 poplevel_class (force
)
1435 register struct binding_level
*level
= class_binding_level
;
1436 tree block
= NULL_TREE
;
1439 my_friendly_assert (level
!= 0, 354);
1441 decl_stack
= pop_stack_level (decl_stack
);
1442 for (shadowed
= level
->shadowed
; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
1443 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1444 /* If we're leaving a toplevel class, don't bother to do the setting
1445 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1446 shouldn't even be used when current_class_type isn't set, and second,
1447 if we don't touch it here, we're able to use the cache effect if the
1448 next time we're entering a class scope, it is the same class. */
1449 if (current_class_depth
!= 1 || force
)
1450 for (shadowed
= level
->class_shadowed
;
1452 shadowed
= TREE_CHAIN (shadowed
))
1453 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1455 /* Remember to save what IDENTIFIER's were bound in this scope so we
1456 can recover from cache misses. */
1458 previous_class_type
= current_class_type
;
1459 previous_class_values
= class_binding_level
->class_shadowed
;
1461 for (shadowed
= level
->type_shadowed
;
1463 shadowed
= TREE_CHAIN (shadowed
))
1464 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
), TREE_VALUE (shadowed
));
1466 GNU_xref_end_scope ((HOST_WIDE_INT
) class_binding_level
,
1467 (HOST_WIDE_INT
) class_binding_level
->level_chain
,
1468 class_binding_level
->parm_flag
,
1469 class_binding_level
->keep
);
1471 if (class_binding_level
->parm_flag
!= 2)
1472 class_binding_level
= (struct binding_level
*)0;
1474 /* Now, pop out of the binding level which we created up in the
1475 `pushlevel_class' routine. */
1476 #if defined(DEBUG_CP_BINDING_LEVELS)
1478 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1480 pop_binding_level ();
1485 /* For debugging. */
1486 static int no_print_functions
= 0;
1487 static int no_print_builtins
= 0;
1490 print_binding_level (lvl
)
1491 struct binding_level
*lvl
;
1495 fprintf (stderr
, " blocks=");
1496 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1497 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1498 list_length (lvl
->incomplete
), lvl
->parm_flag
, lvl
->keep
);
1499 if (lvl
->tag_transparent
)
1500 fprintf (stderr
, " tag-transparent");
1501 if (lvl
->more_cleanups_ok
)
1502 fprintf (stderr
, " more-cleanups-ok");
1503 if (lvl
->have_cleanups
)
1504 fprintf (stderr
, " have-cleanups");
1505 fprintf (stderr
, "\n");
1508 fprintf (stderr
, " names:\t");
1509 /* We can probably fit 3 names to a line? */
1510 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
1512 if (no_print_functions
&& (TREE_CODE (t
) == FUNCTION_DECL
))
1514 if (no_print_builtins
1515 && (TREE_CODE (t
) == TYPE_DECL
)
1516 && (!strcmp (DECL_SOURCE_FILE (t
),"<built-in>")))
1519 /* Function decls tend to have longer names. */
1520 if (TREE_CODE (t
) == FUNCTION_DECL
)
1527 fprintf (stderr
, "\n\t");
1530 print_node_brief (stderr
, "", t
, 0);
1531 if (t
== error_mark_node
)
1535 fprintf (stderr
, "\n");
1539 fprintf (stderr
, " tags:\t");
1541 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
1543 if (TREE_PURPOSE (t
) == NULL_TREE
)
1545 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1552 fprintf (stderr
, "\n\t");
1555 if (TREE_PURPOSE (t
) == NULL_TREE
)
1557 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
1558 fprintf (stderr
, ">");
1560 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1561 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1564 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
1565 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1566 fprintf (stderr
, ">");
1570 fprintf (stderr
, "\n");
1574 fprintf (stderr
, " shadowed:");
1575 for (t
= lvl
->shadowed
; t
; t
= TREE_CHAIN (t
))
1577 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1579 fprintf (stderr
, "\n");
1581 if (lvl
->class_shadowed
)
1583 fprintf (stderr
, " class-shadowed:");
1584 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
1586 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1588 fprintf (stderr
, "\n");
1590 if (lvl
->type_shadowed
)
1592 fprintf (stderr
, " type-shadowed:");
1593 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1595 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1597 fprintf (stderr
, "\n");
1602 print_other_binding_stack (stack
)
1603 struct binding_level
*stack
;
1605 struct binding_level
*level
;
1606 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
1608 fprintf (stderr
, "binding level ");
1609 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
1610 fprintf (stderr
, "\n");
1611 print_binding_level (level
);
1616 print_binding_stack ()
1618 struct binding_level
*b
;
1619 fprintf (stderr
, "current_binding_level=");
1620 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
1621 fprintf (stderr
, "\nclass_binding_level=");
1622 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
1623 fprintf (stderr
, "\nglobal_binding_level=");
1624 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
1625 fprintf (stderr
, "\n");
1626 if (class_binding_level
)
1628 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
1629 if (b
== current_binding_level
)
1632 b
= class_binding_level
;
1634 b
= current_binding_level
;
1637 b
= current_binding_level
;
1638 print_other_binding_stack (b
);
1639 fprintf (stderr
, "global:\n");
1640 print_binding_level (global_binding_level
);
1643 /* Namespace binding access routines: The namespace_bindings field of
1644 the identifier is polymorphic, with three possible values:
1645 NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node
1646 indicating the BINDING_VALUE of global_namespace. */
1648 /* Check whether the a binding for the name to scope is known.
1649 Assumes that the bindings of the name are already a list
1650 of bindings. Returns the binding found, or NULL_TREE. */
1653 find_binding (name
, scope
)
1657 tree iter
, prev
= NULL_TREE
;
1659 scope
= ORIGINAL_NAMESPACE (scope
);
1661 for (iter
= IDENTIFIER_NAMESPACE_BINDINGS (name
); iter
;
1662 iter
= TREE_CHAIN (iter
))
1664 my_friendly_assert (TREE_CODE (iter
) == CPLUS_BINDING
, 374);
1665 if (BINDING_SCOPE (iter
) == scope
)
1667 /* Move binding found to the fron of the list, so
1668 subsequent lookups will find it faster. */
1671 TREE_CHAIN (prev
) = TREE_CHAIN (iter
);
1672 TREE_CHAIN (iter
) = IDENTIFIER_NAMESPACE_BINDINGS (name
);
1673 IDENTIFIER_NAMESPACE_BINDINGS (name
) = iter
;
1682 /* Always returns a binding for name in scope. If the
1683 namespace_bindings is not a list, convert it to one first.
1684 If no binding is found, make a new one. */
1687 binding_for_name (name
, scope
)
1691 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1694 scope
= ORIGINAL_NAMESPACE (scope
);
1696 if (b
&& TREE_CODE (b
) != CPLUS_BINDING
)
1698 /* Get rid of optimization for global scope. */
1699 IDENTIFIER_NAMESPACE_BINDINGS (name
) = NULL_TREE
;
1700 BINDING_VALUE (binding_for_name (name
, global_namespace
)) = b
;
1701 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1703 if (b
&& (result
= find_binding (name
, scope
)))
1705 /* Not found, make a new permanent one. */
1706 push_obstacks (&permanent_obstack
, &permanent_obstack
);
1707 result
= make_node (CPLUS_BINDING
);
1708 TREE_CHAIN (result
) = b
;
1709 IDENTIFIER_NAMESPACE_BINDINGS (name
) = result
;
1710 BINDING_SCOPE (result
) = scope
;
1711 BINDING_TYPE (result
) = NULL_TREE
;
1712 BINDING_VALUE (result
) = NULL_TREE
;
1717 /* Return the binding value for name in scope, considering that
1718 namespace_binding may or may not be a list of CPLUS_BINDINGS. */
1721 namespace_binding (name
, scope
)
1725 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1728 if (scope
== NULL_TREE
)
1729 scope
= global_namespace
;
1730 if (TREE_CODE (b
) != CPLUS_BINDING
)
1731 return (scope
== global_namespace
) ? b
: NULL_TREE
;
1732 name
= find_binding (name
,scope
);
1733 if (name
== NULL_TREE
)
1735 return BINDING_VALUE (name
);
1738 /* Set the binding value for name in scope. If modifying the binding
1739 of global_namespace is attempted, try to optimize it. */
1742 set_namespace_binding (name
, scope
, val
)
1749 if (scope
== NULL_TREE
)
1750 scope
= global_namespace
;
1752 if (scope
== global_namespace
)
1754 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1755 if (b
== NULL_TREE
|| TREE_CODE (b
) != CPLUS_BINDING
)
1757 IDENTIFIER_NAMESPACE_BINDINGS (name
) = val
;
1761 b
= binding_for_name (name
, scope
);
1762 BINDING_VALUE (b
) = val
;
1765 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1766 select a name that is unique to this compilation unit. */
1769 push_namespace (name
)
1774 int implicit_use
= 0;
1776 if (!global_namespace
)
1778 /* This must be ::. */
1779 my_friendly_assert (name
== get_identifier ("::"), 377);
1784 /* The name of anonymous namespace is unique for the translation
1786 static tree anon_name
= NULL_TREE
;
1788 anon_name
= get_file_function_name ('N');
1790 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1792 /* Reopening anonymous namespace. */
1796 else if (current_namespace
== global_namespace
1797 && name
== DECL_NAME (std_node
))
1804 /* Check whether this is an extended namespace definition. */
1805 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1806 if (d
!= NULL_TREE
&& TREE_CODE (d
) == NAMESPACE_DECL
)
1809 if (DECL_NAMESPACE_ALIAS (d
))
1811 cp_error ("namespace alias `%D' not allowed here, assuming `%D'",
1812 d
, DECL_NAMESPACE_ALIAS (d
));
1813 d
= DECL_NAMESPACE_ALIAS (d
);
1820 /* Make a new namespace, binding the name to it. */
1821 d
= build_lang_decl (NAMESPACE_DECL
, name
, void_type_node
);
1822 /* The global namespace is not pushed, and the global binding
1823 level is set elsewhere. */
1828 declare_namespace_level ();
1829 NAMESPACE_LEVEL (d
) = current_binding_level
;
1833 resume_binding_level (NAMESPACE_LEVEL (d
));
1836 do_using_directive (d
);
1837 /* Enter the name space. */
1838 current_namespace
= d
;
1841 /* Pop from the scope of the current namespace. */
1846 if (current_namespace
== global_namespace
)
1848 my_friendly_assert (in_std
>0, 980421);
1852 current_namespace
= CP_DECL_CONTEXT (current_namespace
);
1853 /* The binding level is not popped, as it might be re-opened later. */
1854 suspend_binding_level ();
1857 /* Concatenate the binding levels of all namespaces. */
1860 cat_namespace_levels()
1864 struct binding_level
*b
;
1866 last
= NAMESPACE_LEVEL (global_namespace
) -> names
;
1867 /* The nested namespaces appear in the names list of their ancestors. */
1868 for (current
= last
; current
; current
= TREE_CHAIN (current
))
1870 if (TREE_CODE (current
) != NAMESPACE_DECL
1871 || DECL_NAMESPACE_ALIAS (current
))
1873 if (!DECL_LANG_SPECIFIC (current
))
1876 my_friendly_assert (current
== std_node
, 393);
1879 b
= NAMESPACE_LEVEL (current
);
1880 while (TREE_CHAIN (last
))
1881 last
= TREE_CHAIN (last
);
1882 TREE_CHAIN (last
) = NAMESPACE_LEVEL (current
) -> names
;
1886 /* Subroutines for reverting temporarily to top-level for instantiation
1887 of templates and such. We actually need to clear out the class- and
1888 local-value slots of all identifiers, so that only the global values
1889 are at all visible. Simply setting current_binding_level to the global
1890 scope isn't enough, because more binding levels may be pushed. */
1891 struct saved_scope
{
1892 struct binding_level
*old_binding_level
;
1895 struct saved_scope
*prev
;
1896 tree class_name
, class_type
, function_decl
;
1897 struct binding_level
*class_bindings
;
1898 tree
*lang_base
, *lang_stack
, lang_name
;
1900 int minimal_parse_mode
;
1901 tree last_function_parms
;
1902 tree template_parms
;
1903 HOST_WIDE_INT processing_template_decl
;
1904 tree previous_class_type
, previous_class_values
;
1905 int processing_specialization
;
1906 int processing_explicit_instantiation
;
1908 static struct saved_scope
*current_saved_scope
;
1910 /* A chain of the binding vecs created by store_bindings. We create a
1911 whole bunch of these during compilation, on permanent_obstack, so we
1912 can't just throw them away. */
1913 static tree free_binding_vecs
;
1916 store_bindings (names
, old_bindings
)
1917 tree names
, old_bindings
;
1920 for (t
= names
; t
; t
= TREE_CHAIN (t
))
1922 tree binding
, t1
, id
;
1924 if (TREE_CODE (t
) == TREE_LIST
)
1925 id
= TREE_PURPOSE (t
);
1930 || (!IDENTIFIER_LOCAL_VALUE (id
)
1931 && !IDENTIFIER_CLASS_VALUE (id
)))
1934 for (t1
= old_bindings
; t1
; t1
= TREE_CHAIN (t1
))
1935 if (TREE_VEC_ELT (t1
, 0) == id
)
1938 if (free_binding_vecs
)
1940 binding
= free_binding_vecs
;
1941 free_binding_vecs
= TREE_CHAIN (free_binding_vecs
);
1944 binding
= make_tree_vec (4);
1948 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
1949 TREE_VEC_ELT (binding
, 0) = id
;
1950 TREE_VEC_ELT (binding
, 1) = REAL_IDENTIFIER_TYPE_VALUE (id
);
1951 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_LOCAL_VALUE (id
);
1952 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
1953 IDENTIFIER_LOCAL_VALUE (id
) = NULL_TREE
;
1954 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
1956 TREE_CHAIN (binding
) = old_bindings
;
1957 old_bindings
= binding
;
1961 return old_bindings
;
1965 maybe_push_to_top_level (pseudo
)
1968 extern int current_lang_stacksize
;
1969 struct saved_scope
*s
1970 = (struct saved_scope
*) xmalloc (sizeof (struct saved_scope
));
1971 struct binding_level
*b
= inner_binding_level
;
1972 tree old_bindings
= NULL_TREE
;
1974 if (current_function_decl
)
1975 push_cp_function_context (NULL_TREE
);
1977 if (previous_class_type
)
1978 old_bindings
= store_bindings (previous_class_values
, old_bindings
);
1980 /* Have to include global_binding_level, because class-level decls
1981 aren't listed anywhere useful. */
1982 for (; b
; b
= b
->level_chain
)
1986 /* Template IDs are inserted into the global level. If they were
1987 inserted into namespace level, finish_file wouldn't find them
1988 when doing pending instantiations. Therefore, don't stop at
1989 namespace level, but continue until :: . */
1990 if (b
== global_binding_level
|| (pseudo
&& b
->pseudo_global
))
1993 old_bindings
= store_bindings (b
->names
, old_bindings
);
1994 /* We also need to check class_shadowed to save class-level type
1995 bindings, since pushclass doesn't fill in b->names. */
1996 if (b
->parm_flag
== 2)
1997 old_bindings
= store_bindings (b
->class_shadowed
, old_bindings
);
1999 /* Unwind type-value slots back to top level. */
2000 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
2001 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
2004 s
->old_binding_level
= current_binding_level
;
2005 current_binding_level
= b
;
2007 s
->old_namespace
= current_namespace
;
2008 s
->class_name
= current_class_name
;
2009 s
->class_type
= current_class_type
;
2010 s
->function_decl
= current_function_decl
;
2011 s
->class_bindings
= class_binding_level
;
2012 s
->lang_stack
= current_lang_stack
;
2013 s
->lang_base
= current_lang_base
;
2014 s
->lang_stacksize
= current_lang_stacksize
;
2015 s
->lang_name
= current_lang_name
;
2016 s
->minimal_parse_mode
= minimal_parse_mode
;
2017 s
->last_function_parms
= last_function_parms
;
2018 s
->template_parms
= current_template_parms
;
2019 s
->processing_template_decl
= processing_template_decl
;
2020 s
->previous_class_type
= previous_class_type
;
2021 s
->previous_class_values
= previous_class_values
;
2022 s
->processing_specialization
= processing_specialization
;
2023 s
->processing_explicit_instantiation
= processing_explicit_instantiation
;
2025 current_class_name
= current_class_type
= NULL_TREE
;
2026 current_function_decl
= NULL_TREE
;
2027 class_binding_level
= (struct binding_level
*)0;
2028 current_lang_stacksize
= 10;
2029 current_lang_stack
= current_lang_base
2030 = (tree
*) xmalloc (current_lang_stacksize
* sizeof (tree
));
2031 current_lang_name
= lang_name_cplusplus
;
2032 strict_prototype
= strict_prototypes_lang_cplusplus
;
2033 named_labels
= NULL_TREE
;
2034 shadowed_labels
= NULL_TREE
;
2035 minimal_parse_mode
= 0;
2036 previous_class_type
= previous_class_values
= NULL_TREE
;
2037 processing_specialization
= 0;
2038 processing_explicit_instantiation
= 0;
2039 current_template_parms
= NULL_TREE
;
2040 processing_template_decl
= 0;
2041 current_namespace
= global_namespace
;
2043 s
->prev
= current_saved_scope
;
2044 s
->old_bindings
= old_bindings
;
2045 current_saved_scope
= s
;
2047 push_obstacks (&permanent_obstack
, &permanent_obstack
);
2051 push_to_top_level ()
2053 maybe_push_to_top_level (0);
2057 pop_from_top_level ()
2059 extern int current_lang_stacksize
;
2060 struct saved_scope
*s
= current_saved_scope
;
2063 /* Clear out class-level bindings cache. */
2064 if (previous_class_type
)
2067 previous_class_type
= NULL_TREE
;
2072 current_binding_level
= s
->old_binding_level
;
2073 current_saved_scope
= s
->prev
;
2074 for (t
= s
->old_bindings
; t
; )
2077 tree id
= TREE_VEC_ELT (t
, 0);
2080 SET_IDENTIFIER_TYPE_VALUE (id
, TREE_VEC_ELT (t
, 1));
2081 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VEC_ELT (t
, 2);
2082 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
2085 TREE_CHAIN (save
) = free_binding_vecs
;
2086 free_binding_vecs
= save
;
2088 current_namespace
= s
->old_namespace
;
2089 current_class_name
= s
->class_name
;
2090 current_class_type
= s
->class_type
;
2091 current_function_decl
= s
->function_decl
;
2092 class_binding_level
= s
->class_bindings
;
2093 free (current_lang_base
);
2094 current_lang_base
= s
->lang_base
;
2095 current_lang_stack
= s
->lang_stack
;
2096 current_lang_name
= s
->lang_name
;
2097 current_lang_stacksize
= s
->lang_stacksize
;
2098 if (current_lang_name
== lang_name_cplusplus
)
2099 strict_prototype
= strict_prototypes_lang_cplusplus
;
2100 else if (current_lang_name
== lang_name_c
)
2101 strict_prototype
= strict_prototypes_lang_c
;
2102 minimal_parse_mode
= s
->minimal_parse_mode
;
2103 last_function_parms
= s
->last_function_parms
;
2104 current_template_parms
= s
->template_parms
;
2105 processing_template_decl
= s
->processing_template_decl
;
2106 previous_class_type
= s
->previous_class_type
;
2107 previous_class_values
= s
->previous_class_values
;
2108 processing_specialization
= s
->processing_specialization
;
2109 processing_explicit_instantiation
= s
->processing_explicit_instantiation
;
2113 if (current_function_decl
)
2114 pop_cp_function_context (NULL_TREE
);
2117 /* Push a definition of struct, union or enum tag "name".
2118 into binding_level "b". "type" should be the type node,
2119 We assume that the tag "name" is not already defined.
2121 Note that the definition may really be just a forward reference.
2122 In that case, the TYPE_SIZE will be a NULL_TREE.
2124 C++ gratuitously puts all these tags in the name space. */
2126 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2127 record the shadowed value for this binding contour. TYPE is
2128 the type that ID maps to. */
2131 set_identifier_type_value_with_scope (id
, type
, b
)
2134 struct binding_level
*b
;
2136 if (!b
->namespace_p
)
2138 /* Shadow the marker, not the real thing, so that the marker
2139 gets restored later. */
2140 tree old_type_value
= REAL_IDENTIFIER_TYPE_VALUE (id
);
2142 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
2146 tree binding
= binding_for_name (id
, current_namespace
);
2147 BINDING_TYPE (binding
) = type
;
2148 /* Store marker instead of real type. */
2149 type
= global_type_node
;
2151 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
2154 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2157 set_identifier_type_value (id
, type
)
2161 set_identifier_type_value_with_scope (id
, type
, inner_binding_level
);
2165 set_identifier_local_value_with_scope (id
, val
, b
)
2167 struct binding_level
*b
;
2170 my_friendly_assert (! b
->namespace_p
, 980716);
2172 oldlocal
= IDENTIFIER_LOCAL_VALUE (id
);
2173 b
->shadowed
= tree_cons (id
, oldlocal
, b
->shadowed
);
2174 IDENTIFIER_LOCAL_VALUE (id
) = val
;
2178 set_identifier_local_value (id
, val
)
2181 set_identifier_local_value_with_scope (id
, val
, current_binding_level
);
2184 /* Return the type associated with id. */
2187 identifier_type_value (id
)
2190 /* There is no type with that name, anywhere. */
2191 if (REAL_IDENTIFIER_TYPE_VALUE (id
) == NULL_TREE
)
2193 /* This is not the type marker, but the real thing. */
2194 if (REAL_IDENTIFIER_TYPE_VALUE (id
) != global_type_node
)
2195 return REAL_IDENTIFIER_TYPE_VALUE (id
);
2196 /* Have to search for it. It must be on the global level, now.
2197 Ask lookup_name not to return non-types. */
2198 id
= lookup_name_real (id
, 2, 1, 0);
2200 return TREE_TYPE (id
);
2204 /* Pop off extraneous binding levels left over due to syntax errors.
2206 We don't pop past namespaces, as they might be valid. */
2211 #ifdef DEBUG_CP_BINDING_LEVELS
2212 fprintf (stderr
, "XXX entering pop_everything ()\n");
2214 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2216 if (class_binding_level
)
2217 pop_nested_class (1);
2221 #ifdef DEBUG_CP_BINDING_LEVELS
2222 fprintf (stderr
, "XXX leaving pop_everything ()\n");
2226 /* The type TYPE is being declared. If it is a class template, or a
2227 specialization of a class template, do any processing required and
2228 perform error-checking. If IS_FRIEND is non-zero, this TYPE is
2229 being declared a friend. B is the binding level at which this TYPE
2232 Returns the TYPE_DECL for TYPE, which may have been altered by this
2236 maybe_process_template_type_declaration (type
, globalize
, b
)
2239 struct binding_level
* b
;
2241 tree decl
= TYPE_NAME (type
);
2243 if (processing_template_parmlist
)
2244 /* You can't declare a new template type in a template parameter
2245 list. But, you can declare a non-template type:
2247 template <class A*> struct S;
2249 is a forward-declaration of `A'. */
2253 maybe_check_template_type (type
);
2255 my_friendly_assert (IS_AGGR_TYPE (type
)
2256 || TREE_CODE (type
) == ENUMERAL_TYPE
, 0);
2259 if (/* If !GLOBALIZE then we are looking at a definition.
2260 It may not be a primary template. (For example, in:
2263 struct S1 { class S2 {}; }
2265 we have to push_template_decl for S2.) */
2266 (processing_template_decl
&& !globalize
)
2267 /* If we are declaring a friend template class, we will
2268 have GLOBALIZE set, since something like:
2276 declares S2 to be at global scope. */
2277 || PROCESSING_REAL_TEMPLATE_DECL_P ())
2279 /* This may change after the call to
2280 push_template_decl_real, but we want the original value. */
2281 tree name
= DECL_NAME (decl
);
2283 decl
= push_template_decl_real (decl
, globalize
);
2284 /* If the current binding level is the binding level for the
2285 template parameters (see the comment in
2286 begin_template_parm_list) and the enclosing level is a class
2287 scope, and we're not looking at a friend, push the
2288 declaration of the member class into the class scope. In the
2289 friend case, push_template_decl will already have put the
2290 friend into global scope, if appropriate. */
2291 if (TREE_CODE (type
) != ENUMERAL_TYPE
2292 && !globalize
&& b
->pseudo_global
2293 && b
->level_chain
->parm_flag
== 2)
2295 pushdecl_with_scope (CLASSTYPE_TI_TEMPLATE (type
),
2297 /* Put this tag on the list of tags for the class, since
2298 that won't happen below because B is not the class
2299 binding level, but is instead the pseudo-global level. */
2300 b
->level_chain
->tags
=
2301 saveable_tree_cons (name
, type
, b
->level_chain
->tags
);
2302 TREE_NONLOCAL_FLAG (type
) = 1;
2303 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2304 CLASSTYPE_TAGS (current_class_type
) = b
->level_chain
->tags
;
2312 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2313 Normally put it into the inner-most non-tag-transparent scope,
2314 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2315 The latter is needed for implicit declarations. */
2318 pushtag (name
, type
, globalize
)
2322 register struct binding_level
*b
;
2326 b
= inner_binding_level
;
2327 while (b
->tag_transparent
2328 || (globalize
&& b
->parm_flag
== 2))
2331 if (toplevel_bindings_p ())
2332 b
->tags
= perm_tree_cons (name
, type
, b
->tags
);
2334 b
->tags
= saveable_tree_cons (name
, type
, b
->tags
);
2338 context
= type
? TYPE_CONTEXT (type
) : NULL_TREE
;
2341 tree cs
= current_scope ();
2345 else if (cs
!= NULL_TREE
2346 && TREE_CODE_CLASS (TREE_CODE (cs
)) == 't')
2347 /* When declaring a friend class of a local class, we want
2348 to inject the newly named class into the scope
2349 containing the local class, not the namespace scope. */
2350 context
= hack_decl_function_context (get_type_decl (cs
));
2353 c_decl
= TREE_CODE (context
) == FUNCTION_DECL
2354 ? context
: TYPE_MAIN_DECL (context
);
2357 context
= current_namespace
;
2359 /* Do C++ gratuitous typedefing. */
2360 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2362 register tree d
= NULL_TREE
;
2363 int newdecl
= 0, in_class
= 0;
2365 if ((b
->pseudo_global
&& b
->level_chain
->parm_flag
== 2)
2366 || b
->parm_flag
== 2)
2369 d
= lookup_nested_type (type
, c_decl
);
2374 d
= build_decl (TYPE_DECL
, name
, type
);
2375 if (current_lang_name
== lang_name_java
)
2376 TYPE_FOR_JAVA (type
) = 1;
2377 SET_DECL_ARTIFICIAL (d
);
2379 set_identifier_type_value_with_scope (name
, type
, b
);
2382 d
= TYPE_MAIN_DECL (d
);
2384 TYPE_NAME (type
) = d
;
2385 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
2387 d
= maybe_process_template_type_declaration (type
,
2390 if (b
->parm_flag
== 2)
2391 d
= pushdecl_class_level (d
);
2393 d
= pushdecl_with_scope (d
, b
);
2397 if (ANON_AGGRNAME_P (name
))
2398 DECL_IGNORED_P (d
) = 1;
2400 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2401 DECL_ASSEMBLER_NAME (d
) = DECL_NAME (d
);
2402 if (!uses_template_parms (type
))
2403 DECL_ASSEMBLER_NAME (d
)
2404 = get_identifier (build_overload_name (type
, 1, 1));
2407 if (b
->parm_flag
== 2)
2409 TREE_NONLOCAL_FLAG (type
) = 1;
2410 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2411 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2415 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2416 /* Use the canonical TYPE_DECL for this node. */
2417 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2420 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2421 will be the tagged type we just added to the current
2422 binding level. This fake NULL-named TYPE_DECL node helps
2423 dwarfout.c to know when it needs to output a
2424 representation of a tagged type, and it also gives us a
2425 convenient place to record the "scope start" address for
2428 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2429 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2433 /* Counter used to create anonymous type names. */
2435 static int anon_cnt
= 0;
2437 /* Return an IDENTIFIER which can be used as a name for
2438 anonymous structs and unions. */
2445 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2446 return get_identifier (buf
);
2449 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2450 This keeps dbxout from getting confused. */
2455 register struct binding_level
*b
;
2457 static int last_cnt
= 0;
2459 /* Fast out if no new anon names were declared. */
2460 if (last_cnt
== anon_cnt
)
2463 b
= current_binding_level
;
2464 while (b
->tag_transparent
)
2469 /* A NULL purpose means we have already processed all tags
2470 from here to the end of the list. */
2471 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2473 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2474 TREE_PURPOSE (tags
) = NULL_TREE
;
2475 tags
= TREE_CHAIN (tags
);
2477 last_cnt
= anon_cnt
;
2480 /* Subroutine of duplicate_decls: return truthvalue of whether
2481 or not types of these decls match.
2483 For C++, we must compare the parameter list so that `int' can match
2484 `int&' in a parameter position, but `int&' is not confused with
2488 decls_match (newdecl
, olddecl
)
2489 tree newdecl
, olddecl
;
2493 if (TREE_CODE (newdecl
) == FUNCTION_DECL
2494 && TREE_CODE (olddecl
) == FUNCTION_DECL
)
2496 tree f1
= TREE_TYPE (newdecl
);
2497 tree f2
= TREE_TYPE (olddecl
);
2498 tree p1
= TYPE_ARG_TYPES (f1
);
2499 tree p2
= TYPE_ARG_TYPES (f2
);
2501 if (DECL_REAL_CONTEXT (newdecl
) != DECL_REAL_CONTEXT (olddecl
)
2502 && ! (DECL_LANGUAGE (newdecl
) == lang_c
2503 && DECL_LANGUAGE (olddecl
) == lang_c
))
2506 /* When we parse a static member function definition,
2507 we put together a FUNCTION_DECL which thinks its type
2508 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2510 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2511 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2512 else if (TREE_CODE (f2
) == METHOD_TYPE
2513 && DECL_STATIC_FUNCTION_P (newdecl
))
2514 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2516 /* Here we must take care of the case where new default
2517 parameters are specified. Also, warn if an old
2518 declaration becomes ambiguous because default
2519 parameters may cause the two to be ambiguous. */
2520 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2522 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2523 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2525 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2529 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2531 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2534 types_match
= self_promoting_args_p (p1
);
2535 if (p1
== void_list_node
)
2536 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2538 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2539 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2541 types_match
= self_promoting_args_p (p2
);
2542 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2545 types_match
= compparms (p1
, p2
, 3);
2550 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
2551 && TREE_CODE (olddecl
) == TEMPLATE_DECL
)
2553 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2554 DECL_TEMPLATE_PARMS (olddecl
)))
2557 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2560 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2561 DECL_TEMPLATE_RESULT (newdecl
));
2565 if (TREE_TYPE (newdecl
) == error_mark_node
)
2566 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2567 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2568 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2569 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2571 /* Qualifiers must match, and they may be present on either, the type
2573 else if ((TREE_READONLY (newdecl
)
2574 || TYPE_READONLY (TREE_TYPE (newdecl
)))
2575 == (TREE_READONLY (olddecl
)
2576 || TYPE_READONLY (TREE_TYPE (olddecl
)))
2577 && (TREE_THIS_VOLATILE (newdecl
)
2578 || TYPE_VOLATILE (TREE_TYPE (newdecl
)))
2579 == (TREE_THIS_VOLATILE (olddecl
)
2580 || TYPE_VOLATILE (TREE_TYPE (olddecl
))))
2581 types_match
= comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl
)),
2582 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl
)), 1);
2590 /* If NEWDECL is `static' and an `extern' was seen previously,
2591 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2592 information about previous usage as an `extern'.)
2594 Note that this does not apply to the C++ case of declaring
2595 a variable `extern const' and then later `const'.
2597 Don't complain about built-in functions, since they are beyond
2598 the user's control. */
2601 warn_extern_redeclared_static (newdecl
, olddecl
)
2602 tree newdecl
, olddecl
;
2606 static char *explicit_extern_static_warning
2607 = "`%D' was declared `extern' and later `static'";
2608 static char *implicit_extern_static_warning
2609 = "`%D' was declared implicitly `extern' and later `static'";
2611 if (TREE_CODE (newdecl
) == TYPE_DECL
)
2614 name
= DECL_ASSEMBLER_NAME (newdecl
);
2615 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2617 /* It's okay to redeclare an ANSI built-in function as static,
2618 or to declare a non-ANSI built-in function as anything. */
2619 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2620 && olddecl
!= NULL_TREE
2621 && TREE_CODE (olddecl
) == FUNCTION_DECL
2622 && (DECL_BUILT_IN (olddecl
)
2623 || DECL_BUILT_IN_NONANSI (olddecl
))))
2625 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2626 ? implicit_extern_static_warning
2627 : explicit_extern_static_warning
, newdecl
);
2628 if (olddecl
!= NULL_TREE
)
2629 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2634 /* Handle when a new declaration NEWDECL has the same name as an old
2635 one OLDDECL in the same binding contour. Prints an error message
2638 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2639 Otherwise, return 0. */
2642 duplicate_decls (newdecl
, olddecl
)
2643 tree newdecl
, olddecl
;
2645 extern struct obstack permanent_obstack
;
2646 unsigned olddecl_uid
= DECL_UID (olddecl
);
2647 int olddecl_friend
= 0, types_match
= 0;
2648 int new_defines_function
= 0;
2650 if (newdecl
== olddecl
)
2653 types_match
= decls_match (newdecl
, olddecl
);
2655 /* If either the type of the new decl or the type of the old decl is an
2656 error_mark_node, then that implies that we have already issued an
2657 error (earlier) for some bogus type specification, and in that case,
2658 it is rather pointless to harass the user with yet more error message
2659 about the same declaration, so just pretend the types match here. */
2660 if (TREE_TYPE (newdecl
) == error_mark_node
2661 || TREE_TYPE (olddecl
) == error_mark_node
)
2664 /* Check for redeclaration and other discrepancies. */
2665 if (TREE_CODE (olddecl
) == FUNCTION_DECL
2666 && DECL_ARTIFICIAL (olddecl
)
2667 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2669 /* If you declare a built-in or predefined function name as static,
2670 the old definition is overridden, but optionally warn this was a
2671 bad choice of name. Ditto for overloads. */
2672 if (! TREE_PUBLIC (newdecl
)
2673 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2674 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2677 cp_warning ("shadowing %s function `%#D'",
2678 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2680 /* Discard the old built-in function. */
2683 else if (! types_match
)
2685 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2687 /* If the built-in is not ansi, then programs can override
2688 it even globally without an error. */
2689 if (! DECL_BUILT_IN (olddecl
))
2690 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2694 cp_error ("declaration of `%#D'", newdecl
);
2695 cp_error ("conflicts with built-in declaration `%#D'",
2701 cp_warning ("declaration of `%#D'", newdecl
);
2702 cp_warning ("conflicts with built-in declaration `%#D'",
2706 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2708 if ((TREE_CODE (olddecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (olddecl
)
2709 && TREE_CODE (newdecl
) != TYPE_DECL
2710 && ! (TREE_CODE (newdecl
) == TEMPLATE_DECL
2711 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
))
2712 || (TREE_CODE (newdecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (newdecl
)
2713 && TREE_CODE (olddecl
) != TYPE_DECL
2714 && ! (TREE_CODE (olddecl
) == TEMPLATE_DECL
2715 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
))
2718 /* We do nothing special here, because C++ does such nasty
2719 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2720 get shadowed, and know that if we need to find a TYPE_DECL
2721 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2722 slot of the identifier. */
2726 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2727 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
2728 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2729 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
2732 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2733 if (TREE_CODE (olddecl
) == TREE_LIST
)
2734 olddecl
= TREE_VALUE (olddecl
);
2735 cp_error_at ("previous declaration of `%#D'", olddecl
);
2737 /* New decl is completely inconsistent with the old one =>
2738 tell caller to replace the old one. */
2742 else if (!types_match
)
2744 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2746 /* The name of a class template may not be declared to refer to
2747 any other template, class, function, object, namespace, value,
2748 or type in the same scope. */
2749 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
2750 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2752 cp_error ("declaration of template `%#D'", newdecl
);
2753 cp_error_at ("conflicts with previous declaration `%#D'",
2756 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
2757 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
2758 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
2759 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))), 3)
2760 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2761 DECL_TEMPLATE_PARMS (olddecl
)))
2763 cp_error ("new declaration `%#D'", newdecl
);
2764 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2768 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2770 if (DECL_LANGUAGE (newdecl
) == lang_c
2771 && DECL_LANGUAGE (olddecl
) == lang_c
)
2773 cp_error ("declaration of C function `%#D' conflicts with",
2775 cp_error_at ("previous declaration `%#D' here", olddecl
);
2777 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2778 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2780 cp_error ("new declaration `%#D'", newdecl
);
2781 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2787 /* Already complained about this, so don't do so again. */
2788 else if (current_class_type
== NULL_TREE
2789 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2791 cp_error ("conflicting types for `%#D'", newdecl
);
2792 cp_error_at ("previous declaration as `%#D'", olddecl
);
2795 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2796 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2797 && (!DECL_TEMPLATE_INFO (newdecl
)
2798 || (DECL_TI_TEMPLATE (newdecl
)
2799 != DECL_TI_TEMPLATE (olddecl
))))
2800 || (DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2801 && (!DECL_TEMPLATE_INFO (olddecl
)
2802 || (DECL_TI_TEMPLATE (olddecl
)
2803 != DECL_TI_TEMPLATE (newdecl
))))))
2804 /* It's OK to have a template specialization and a non-template
2805 with the same type, or to have specializations of two
2806 different templates with the same type. Note that if one is a
2807 specialization, and the other is an instantiation of the same
2808 template, that we do not exit at this point. That situation
2809 can occur if we instantiate a template class, and then
2810 specialize one of its methods. This situation is legal, but
2811 the declarations must be merged in the usual way. */
2813 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2814 && ((DECL_TEMPLATE_INSTANTIATION (olddecl
)
2815 && !DECL_USE_TEMPLATE (newdecl
))
2816 || (DECL_TEMPLATE_INSTANTIATION (newdecl
)
2817 && !DECL_USE_TEMPLATE (olddecl
))))
2818 /* One of the declarations is a template instantiation, and the
2819 other is not a template at all. That's OK. */
2821 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
2822 && DECL_NAMESPACE_ALIAS (newdecl
)
2823 && DECL_NAMESPACE_ALIAS (newdecl
) == DECL_NAMESPACE_ALIAS (olddecl
))
2824 /* Redeclaration of namespace alias, ignore it. */
2828 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2831 cp_error (errmsg
, newdecl
);
2832 if (DECL_NAME (olddecl
) != NULL_TREE
)
2833 cp_error_at ((DECL_INITIAL (olddecl
)
2834 && namespace_bindings_p ())
2835 ? "`%#D' previously defined here"
2836 : "`%#D' previously declared here", olddecl
);
2838 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2839 && DECL_INITIAL (olddecl
) != NULL_TREE
2840 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2841 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2843 /* Prototype decl follows defn w/o prototype. */
2844 cp_warning_at ("prototype for `%#D'", newdecl
);
2845 cp_warning_at ("follows non-prototype definition here", olddecl
);
2847 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2848 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2850 /* extern "C" int foo ();
2851 int foo () { bar (); }
2853 if (current_lang_stack
== current_lang_base
)
2854 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2857 cp_error_at ("previous declaration of `%#D' with %L linkage",
2858 olddecl
, DECL_LANGUAGE (olddecl
));
2859 cp_error ("conflicts with new declaration with %L linkage",
2860 DECL_LANGUAGE (newdecl
));
2864 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
2866 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2868 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2869 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2872 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2873 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2875 for (; t1
&& t1
!= void_list_node
;
2876 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2877 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2879 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2884 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2886 cp_pedwarn_at ("after previous specification in `%#D'",
2892 cp_error ("default argument given for parameter %d of `%#D'",
2894 cp_error_at ("after previous specification in `%#D'",
2899 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2900 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
2902 cp_warning ("`%#D' was used before it was declared inline",
2904 cp_warning_at ("previous non-inline declaration here",
2908 /* These bits are logically part of the type for non-functions. */
2909 else if (TREE_READONLY (newdecl
) != TREE_READONLY (olddecl
)
2910 || TREE_THIS_VOLATILE (newdecl
) != TREE_THIS_VOLATILE (olddecl
))
2912 cp_pedwarn ("type qualifiers for `%#D'", newdecl
);
2913 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl
);
2917 /* If new decl is `static' and an `extern' was seen previously,
2919 warn_extern_redeclared_static (newdecl
, olddecl
);
2921 /* We have committed to returning 1 at this point. */
2922 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2924 /* Now that functions must hold information normally held
2925 by field decls, there is extra work to do so that
2926 declaration information does not get destroyed during
2928 if (DECL_VINDEX (olddecl
))
2929 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2930 if (DECL_CONTEXT (olddecl
))
2931 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2932 if (DECL_CLASS_CONTEXT (olddecl
))
2933 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2934 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2935 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2936 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2937 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2938 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2939 DECL_VIRTUAL_P (newdecl
) |= DECL_VIRTUAL_P (olddecl
);
2940 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl
) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl
);
2941 new_defines_function
= DECL_INITIAL (newdecl
) != NULL_TREE
;
2943 /* Optionally warn about more than one declaration for the same
2944 name, but don't warn about a function declaration followed by a
2946 if (warn_redundant_decls
&& ! DECL_ARTIFICIAL (olddecl
)
2947 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2948 /* Don't warn about extern decl followed by definition. */
2949 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
))
2950 /* Don't warn about friends, let add_friend take care of it. */
2951 && ! DECL_FRIEND_P (newdecl
))
2953 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2954 cp_warning_at ("previous declaration of `%D'", olddecl
);
2958 /* Deal with C++: must preserve virtual function table size. */
2959 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2961 register tree newtype
= TREE_TYPE (newdecl
);
2962 register tree oldtype
= TREE_TYPE (olddecl
);
2964 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2965 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2967 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2968 CLASSTYPE_FRIEND_CLASSES (newtype
)
2969 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2973 /* Copy all the DECL_... slots specified in the new decl
2974 except for any that we copy here from the old type. */
2975 DECL_MACHINE_ATTRIBUTES (newdecl
)
2976 = merge_machine_decl_attributes (olddecl
, newdecl
);
2978 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2980 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl
),
2981 DECL_TEMPLATE_RESULT (olddecl
)))
2982 cp_error ("invalid redeclaration of %D", newdecl
);
2983 TREE_TYPE (olddecl
) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
));
2984 DECL_TEMPLATE_PARMS (olddecl
) = DECL_TEMPLATE_PARMS (newdecl
);
2985 DECL_TEMPLATE_INFO (olddecl
) = DECL_TEMPLATE_INFO (newdecl
);
2986 DECL_TEMPLATE_SPECIALIZATIONS (olddecl
)
2987 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl
),
2988 DECL_TEMPLATE_SPECIALIZATIONS (newdecl
));
2995 /* Automatically handles default parameters. */
2996 tree oldtype
= TREE_TYPE (olddecl
);
2999 /* Make sure we put the new type in the same obstack as the old one. */
3001 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
3004 push_obstacks_nochange ();
3005 end_temporary_allocation ();
3008 /* Merge the data types specified in the two decls. */
3009 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
3011 if (TREE_CODE (newdecl
) == VAR_DECL
)
3012 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
3013 /* Do this after calling `common_type' so that default
3014 parameters don't confuse us. */
3015 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3016 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
3017 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
3019 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
3020 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
3021 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
3022 TYPE_RAISES_EXCEPTIONS (oldtype
));
3024 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
3025 && DECL_SOURCE_LINE (olddecl
) != 0
3027 && ! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
3029 cp_pedwarn ("declaration of `%D' throws different exceptions",
3031 cp_pedwarn_at ("previous declaration here", olddecl
);
3034 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
3036 /* Lay the type out, unless already done. */
3037 if (newtype
!= canonical_type_variant (oldtype
)
3038 && TREE_TYPE (newdecl
) != error_mark_node
3039 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3040 layout_type (TREE_TYPE (newdecl
));
3042 if ((TREE_CODE (newdecl
) == VAR_DECL
3043 || TREE_CODE (newdecl
) == PARM_DECL
3044 || TREE_CODE (newdecl
) == RESULT_DECL
3045 || TREE_CODE (newdecl
) == FIELD_DECL
3046 || TREE_CODE (newdecl
) == TYPE_DECL
)
3047 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3048 layout_decl (newdecl
, 0);
3050 /* Merge the type qualifiers. */
3051 if (TREE_READONLY (newdecl
))
3052 TREE_READONLY (olddecl
) = 1;
3053 if (TREE_THIS_VOLATILE (newdecl
))
3054 TREE_THIS_VOLATILE (olddecl
) = 1;
3056 /* Merge the initialization information. */
3057 if (DECL_INITIAL (newdecl
) == NULL_TREE
3058 && DECL_INITIAL (olddecl
) != NULL_TREE
)
3060 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3061 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
3062 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
3063 if (DECL_LANG_SPECIFIC (newdecl
)
3064 && DECL_LANG_SPECIFIC (olddecl
))
3065 DECL_SAVED_TREE (newdecl
) = DECL_SAVED_TREE (olddecl
);
3068 /* Merge the section attribute.
3069 We want to issue an error if the sections conflict but that must be
3070 done later in decl_attributes since we are called before attributes
3072 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
3073 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
3075 /* Keep the old rtl since we can safely use it, unless it's the
3076 call to abort() used for abstract virtuals. */
3077 if ((DECL_LANG_SPECIFIC (olddecl
)
3078 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3079 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
3080 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3084 /* If cannot merge, then use the new type and qualifiers,
3085 and don't preserve the old rtl. */
3088 /* Clean out any memory we had of the old declaration. */
3089 tree oldstatic
= value_member (olddecl
, static_aggregates
);
3091 TREE_VALUE (oldstatic
) = error_mark_node
;
3093 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
3094 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
3095 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
3096 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
3099 /* Merge the storage class information. */
3100 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
3101 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
3102 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
3103 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
3104 if (! DECL_EXTERNAL (olddecl
))
3105 DECL_EXTERNAL (newdecl
) = 0;
3107 if (DECL_LANG_SPECIFIC (newdecl
) && DECL_LANG_SPECIFIC (olddecl
))
3109 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
3110 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
3111 DECL_COMDAT (newdecl
) |= DECL_COMDAT (olddecl
);
3112 /* Don't really know how much of the language-specific
3113 values we should copy from old to new. */
3114 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
3115 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
3116 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
3117 if (DECL_TEMPLATE_INFO (newdecl
) == NULL_TREE
)
3119 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
3120 DECL_USE_TEMPLATE (newdecl
) = DECL_USE_TEMPLATE (olddecl
);
3122 olddecl_friend
= DECL_FRIEND_P (olddecl
);
3125 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3127 if (DECL_TEMPLATE_INSTANTIATION (olddecl
)
3128 && !DECL_TEMPLATE_INSTANTIATION (newdecl
))
3130 /* If newdecl is not a specialization, then it is not a
3131 template-related function at all. And that means that we
3132 shoud have exited above, returning 0. */
3133 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl
),
3136 if (TREE_USED (olddecl
))
3137 /* From [temp.expl.spec]:
3139 If a template, a member template or the member of a class
3140 template is explicitly specialized then that
3141 specialization shall be declared before the first use of
3142 that specialization that would cause an implicit
3143 instantiation to take place, in every translation unit in
3144 which such a use occurs. */
3145 cp_error ("explicit specialization of %D after first use",
3148 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl
);
3150 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
3152 /* If either decl says `inline', this fn is inline, unless its
3153 definition was passed already. */
3154 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
3155 DECL_INLINE (olddecl
) = 1;
3156 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
3160 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
3161 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
3162 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
3164 if (! types_match
|| new_defines_function
)
3166 /* These need to be copied so that the names are available. */
3167 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
3168 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
3170 if (new_defines_function
)
3171 /* If defining a function declared with other language
3172 linkage, use the previously declared language linkage. */
3173 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
3176 /* If redeclaring a builtin function, and not a definition,
3177 it stays built in. */
3178 if (DECL_BUILT_IN (olddecl
))
3180 DECL_BUILT_IN (newdecl
) = 1;
3181 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
3182 /* If we're keeping the built-in definition, keep the rtl,
3183 regardless of declaration matches. */
3184 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3187 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
3189 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
3190 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
3191 /* Previously saved insns go together with
3192 the function's previous definition. */
3193 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3194 /* Don't clear out the arguments if we're redefining a function. */
3195 if (DECL_ARGUMENTS (olddecl
))
3196 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
3198 if (DECL_LANG_SPECIFIC (olddecl
))
3199 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
3202 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
3204 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
3207 /* Now preserve various other info from the definition. */
3208 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
3209 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
3210 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
3211 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
3213 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3216 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
3217 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
3219 function_size
= sizeof (struct tree_decl
);
3221 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3222 (char *) olddecl
+ sizeof (struct tree_common
),
3223 function_size
- sizeof (struct tree_common
));
3225 /* Can we safely free the storage used by newdecl? */
3227 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3228 & ~ obstack_alignment_mask (&permanent_obstack))
3230 if (DECL_TEMPLATE_INSTANTIATION (newdecl
))
3232 /* If newdecl is a template instantiation, it is possible that
3233 the following sequence of events has occurred:
3235 o A friend function was declared in a class template. The
3236 class template was instantiated.
3238 o The instantiation of the friend declaration was
3239 recorded on the instantiation list, and is newdecl.
3241 o Later, however, instantiate_class_template called pushdecl
3242 on the newdecl to perform name injection. But, pushdecl in
3243 turn called duplicate_decls when it discovered that another
3244 declaration of a global function with the same name already
3247 o Here, in duplicate_decls, we decided to clobber newdecl.
3249 If we're going to do that, we'd better make sure that
3250 olddecl, and not newdecl, is on the list of
3251 instantiations so that if we try to do the instantiation
3252 again we won't get the clobbered declaration. */
3254 tree tmpl
= DECL_TI_TEMPLATE (newdecl
);
3255 tree decls
= DECL_TEMPLATE_SPECIALIZATIONS (tmpl
);
3257 for (; decls
; decls
= TREE_CHAIN (decls
))
3258 if (TREE_VALUE (decls
) == newdecl
)
3259 TREE_VALUE (decls
) = olddecl
;
3262 if (((char *)newdecl
+ ROUND (function_size
) == (char *)nl
3263 && ((char *)newdecl
+ ROUND (function_size
)
3264 + ROUND (sizeof (struct lang_decl
))
3265 == obstack_next_free (&permanent_obstack
)))
3266 || ((char *)newdecl
+ ROUND (function_size
)
3267 == obstack_next_free (&permanent_obstack
)))
3269 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
3270 DECL_LANG_SPECIFIC (olddecl
) = ol
;
3271 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
3273 obstack_free (&permanent_obstack
, newdecl
);
3275 else if (LANG_DECL_PERMANENT (ol
) && ol
!= nl
)
3277 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
3279 /* Save these lang_decls that would otherwise be lost. */
3280 extern tree free_lang_decl_chain
;
3281 tree free_lang_decl
= (tree
) ol
;
3283 if (DECL_LANG_SPECIFIC (olddecl
) == ol
)
3286 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
3287 free_lang_decl_chain
= free_lang_decl
;
3291 /* Storage leak. */;
3297 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3298 (char *) olddecl
+ sizeof (struct tree_common
),
3299 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3300 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3303 DECL_UID (olddecl
) = olddecl_uid
;
3305 DECL_FRIEND_P (olddecl
) = 1;
3307 /* NEWDECL contains the merged attribute lists.
3308 Update OLDDECL to be the same. */
3309 DECL_MACHINE_ATTRIBUTES (olddecl
) = DECL_MACHINE_ATTRIBUTES (newdecl
);
3314 /* Record a decl-node X as belonging to the current lexical scope.
3315 Check for errors (such as an incompatible declaration for the same
3316 name already seen in the same scope).
3318 Returns either X or an old decl for the same name.
3319 If an old decl is returned, it may have been smashed
3320 to agree with what X says. */
3327 register tree name
= DECL_ASSEMBLER_NAME (x
);
3328 register struct binding_level
*b
= current_binding_level
;
3330 if (current_function_decl
&& x
!= current_function_decl
3331 /* A local declaration for a function doesn't constitute nesting. */
3332 && (TREE_CODE (x
) != FUNCTION_DECL
|| DECL_INITIAL (x
))
3333 /* Don't change DECL_CONTEXT of virtual methods. */
3334 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
3335 && ! DECL_CONTEXT (x
))
3336 DECL_CONTEXT (x
) = current_function_decl
;
3337 if (!DECL_CONTEXT (x
))
3338 DECL_CONTEXT (x
) = FROB_CONTEXT (current_namespace
);
3340 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3341 compiler wants to use. */
3342 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
3343 || TREE_CODE (x
) == NAMESPACE_DECL
|| TREE_CODE (x
) == TEMPLATE_TYPE_PARM
3344 || TREE_CODE (x
) == TEMPLATE_TEMPLATE_PARM
)
3345 name
= DECL_NAME (x
);
3350 /* Not needed...see below. */
3354 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3355 name
= TREE_OPERAND (name
, 0);
3357 /* Namespace-scoped variables are not found in the current level. */
3358 if (TREE_CODE (x
) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (x
))
3359 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3361 t
= lookup_name_current_level (name
);
3362 if (t
== error_mark_node
)
3364 /* error_mark_node is 0 for a while during initialization! */
3366 cp_error_at ("`%#D' used prior to declaration", x
);
3369 else if (t
!= NULL_TREE
)
3372 /* This is turned off until I have time to do it right (bpk). */
3373 /* With the code below that uses it... */
3374 file
= DECL_SOURCE_FILE (t
);
3375 line
= DECL_SOURCE_LINE (t
);
3377 if (TREE_CODE (t
) == PARM_DECL
)
3379 if (DECL_CONTEXT (t
) == NULL_TREE
)
3380 fatal ("parse errors have confused me too much");
3382 /* Check for duplicate params. */
3383 if (duplicate_decls (x
, t
))
3386 else if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
3387 || DECL_FUNCTION_TEMPLATE_P (x
))
3388 && is_overloaded_fn (t
))
3389 /* Don't do anything just yet. */;
3390 else if (t
== wchar_decl_node
)
3392 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3393 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
3395 /* Throw away the redeclaration. */
3398 else if (TREE_CODE (t
) != TREE_CODE (x
))
3400 if (duplicate_decls (x
, t
))
3403 else if (duplicate_decls (x
, t
))
3406 /* This is turned off until I have time to do it right (bpk). */
3408 /* Also warn if they did a prototype with `static' on it, but
3409 then later left the `static' off. */
3410 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3412 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3417 cp_warning ("`static' missing from declaration of `%D'",
3419 warning_with_file_and_line (file
, line
,
3420 "previous declaration of `%s'",
3421 decl_as_string (t
, 0));
3424 /* Now fix things so it'll do what they expect. */
3425 if (current_function_decl
)
3426 TREE_PUBLIC (current_function_decl
) = 0;
3428 /* Due to interference in memory reclamation (X may be
3429 obstack-deallocated at this point), we must guard against
3430 one really special case. [jason: This should be handled
3431 by start_function] */
3432 if (current_function_decl
== x
)
3433 current_function_decl
= t
;
3435 if (TREE_CODE (t
) == TYPE_DECL
)
3436 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3437 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3438 check_default_args (t
);
3442 else if (DECL_MAIN_P (x
))
3444 /* A redeclaration of main, but not a duplicate of the
3449 This function shall not be overloaded. */
3450 cp_error_at ("invalid redeclaration of `%D'", t
);
3451 cp_error ("as `%D'", x
);
3452 /* We don't try to push this declaration since that
3458 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3460 t
= push_overloaded_decl (x
, 1);
3461 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3464 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_NAMESPACE_SCOPE_P (x
))
3465 return push_overloaded_decl (x
, 0);
3467 /* If declaring a type as a typedef, copy the type (unless we're
3468 at line 0), and install this TYPE_DECL as the new type's typedef
3469 name. See the extensive comment in ../c-decl.c (pushdecl). */
3470 if (TREE_CODE (x
) == TYPE_DECL
)
3472 tree type
= TREE_TYPE (x
);
3473 if (DECL_SOURCE_LINE (x
) == 0)
3475 if (TYPE_NAME (type
) == 0)
3476 TYPE_NAME (type
) = x
;
3478 else if (type
!= error_mark_node
&& TYPE_NAME (type
) != x
)
3480 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
3482 DECL_ORIGINAL_TYPE (x
) = type
;
3483 type
= build_type_copy (type
);
3484 TYPE_STUB_DECL (type
) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x
));
3485 TYPE_NAME (type
) = x
;
3486 TREE_TYPE (x
) = type
;
3491 if (type
!= error_mark_node
3493 && TYPE_IDENTIFIER (type
))
3494 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3497 /* Multiple external decls of the same identifier ought to match.
3499 We get warnings about inline functions where they are defined.
3500 We get warnings about other functions from push_overloaded_decl.
3502 Avoid duplicate warnings where they are used. */
3503 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3507 if (IDENTIFIER_NAMESPACE_VALUE (name
) != NULL_TREE
3508 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name
))
3509 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name
))))
3510 decl
= IDENTIFIER_NAMESPACE_VALUE (name
);
3515 /* If different sort of thing, we already gave an error. */
3516 && TREE_CODE (decl
) == TREE_CODE (x
)
3517 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3519 cp_pedwarn ("type mismatch with previous external decl", x
);
3520 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3524 /* This name is new in its binding level.
3525 Install the new declaration and return it. */
3526 if (namespace_bindings_p ())
3528 /* Install a global value. */
3530 /* If the first global decl has external linkage,
3531 warn if we later see static one. */
3532 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
3533 TREE_PUBLIC (name
) = 1;
3535 /* Don't install an artificial TYPE_DECL if we already have
3536 another _DECL with that name. */
3537 if (TREE_CODE (x
) != TYPE_DECL
3539 || ! DECL_ARTIFICIAL (x
))
3541 if (TREE_CODE (x
) == FUNCTION_DECL
)
3543 ((IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
3544 || (IDENTIFIER_GLOBAL_VALUE (name
) == x
), 378);
3545 SET_IDENTIFIER_NAMESPACE_VALUE (name
, x
);
3548 /* Don't forget if the function was used via an implicit decl. */
3549 if (IDENTIFIER_IMPLICIT_DECL (name
)
3550 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3553 /* Don't forget if its address was taken in that way. */
3554 if (IDENTIFIER_IMPLICIT_DECL (name
)
3555 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3556 TREE_ADDRESSABLE (x
) = 1;
3558 /* Warn about mismatches against previous implicit decl. */
3559 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3560 /* If this real decl matches the implicit, don't complain. */
3561 && ! (TREE_CODE (x
) == FUNCTION_DECL
3562 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3564 ("`%D' was previously implicitly declared to return `int'", x
);
3566 /* If new decl is `static' and an `extern' was seen previously,
3568 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3569 warn_extern_redeclared_static (x
, t
);
3573 /* Here to install a non-global value. */
3574 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3575 tree oldglobal
= IDENTIFIER_NAMESPACE_VALUE (name
);
3577 /* Don't install an artificial TYPE_DECL if we already have
3578 another _DECL with that name. */
3579 if (TREE_CODE (x
) != TYPE_DECL
3581 || ! DECL_ARTIFICIAL (x
))
3582 set_identifier_local_value_with_scope (name
, x
, b
);
3584 /* If this is a TYPE_DECL, push it into the type value slot. */
3585 if (TREE_CODE (x
) == TYPE_DECL
)
3586 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3588 /* Clear out any TYPE_DECL shadowed by a namespace so that
3589 we won't think this is a type. The C struct hack doesn't
3590 go through namespaces. */
3591 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3592 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3594 /* If this is an extern function declaration, see if we
3595 have a global definition or declaration for the function. */
3596 if (oldlocal
== NULL_TREE
3597 && DECL_EXTERNAL (x
)
3598 && oldglobal
!= NULL_TREE
3599 && TREE_CODE (x
) == FUNCTION_DECL
3600 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3602 /* We have one. Their types must agree. */
3603 if (decls_match (x
, oldglobal
))
3607 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3608 cp_warning_at ("global declaration `%#D'", oldglobal
);
3611 /* If we have a local external declaration,
3612 and no file-scope declaration has yet been seen,
3613 then if we later have a file-scope decl it must not be static. */
3614 if (oldlocal
== NULL_TREE
3615 && oldglobal
== NULL_TREE
3616 && DECL_EXTERNAL (x
)
3619 TREE_PUBLIC (name
) = 1;
3622 if (DECL_FROM_INLINE (x
))
3623 /* Inline decls shadow nothing. */;
3625 /* Warn if shadowing an argument at the top level of the body. */
3626 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3627 && TREE_CODE (oldlocal
) == PARM_DECL
3628 && TREE_CODE (x
) != PARM_DECL
)
3630 /* Go to where the parms should be and see if we
3632 struct binding_level
*b
= current_binding_level
->level_chain
;
3638 if (b
->parm_flag
== 1)
3639 cp_error ("declaration of `%#D' shadows a parameter", name
);
3641 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3642 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3644 warning ("variable `%s' shadows local",
3645 IDENTIFIER_POINTER (name
));
3646 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3648 /* Maybe warn if shadowing something else. */
3649 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3650 /* No shadow warnings for internally generated vars. */
3651 && ! DECL_ARTIFICIAL (x
)
3652 /* No shadow warnings for vars made for inlining. */
3653 && ! DECL_FROM_INLINE (x
))
3655 char *warnstring
= NULL
;
3657 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3658 warnstring
= "declaration of `%s' shadows a parameter";
3659 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3660 && current_class_ptr
3661 && !TREE_STATIC (name
))
3662 warnstring
= "declaration of `%s' shadows a member of `this'";
3663 else if (oldlocal
!= NULL_TREE
)
3664 warnstring
= "declaration of `%s' shadows previous local";
3665 else if (oldglobal
!= NULL_TREE
)
3666 /* XXX shadow warnings in outer-more namespaces */
3667 warnstring
= "declaration of `%s' shadows global declaration";
3670 warning (warnstring
, IDENTIFIER_POINTER (name
));
3672 /* Check to see if decl redeclares a template parameter. */
3673 if (oldlocal
&& (current_class_type
|| current_function_decl
)
3674 && current_template_parms
)
3676 if (decl_template_parm_p (oldlocal
))
3678 cp_error ("redeclaration of template parameter `%T'", name
);
3679 cp_error_at (" previously declared here `%#D'", oldlocal
);
3684 if (TREE_CODE (x
) == FUNCTION_DECL
)
3685 check_default_args (x
);
3687 /* Keep count of variables in this level with incomplete type. */
3688 if (TREE_CODE (x
) == VAR_DECL
3689 && TREE_TYPE (x
) != error_mark_node
3690 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3691 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3692 /* RTTI TD entries are created while defining the type_info. */
3693 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3694 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3695 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3698 /* Put decls on list in reverse order.
3699 We will reverse them later if necessary. */
3700 TREE_CHAIN (x
) = b
->names
;
3702 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3703 my_friendly_abort (124);
3708 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3709 caller to set DECL_CONTEXT properly. */
3712 pushdecl_with_scope (x
, level
)
3714 struct binding_level
*level
;
3716 register struct binding_level
*b
;
3717 tree function_decl
= current_function_decl
;
3719 current_function_decl
= NULL_TREE
;
3720 if (level
->parm_flag
== 2)
3722 b
= class_binding_level
;
3723 class_binding_level
= level
;
3724 pushdecl_class_level (x
);
3725 class_binding_level
= b
;
3729 b
= current_binding_level
;
3730 current_binding_level
= level
;
3732 current_binding_level
= b
;
3734 current_function_decl
= function_decl
;
3738 /* Like pushdecl, only it places X in the current namespace,
3742 pushdecl_namespace_level (x
)
3745 register struct binding_level
*b
= inner_binding_level
;
3748 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
3750 /* Now, the type_shadowed stack may screw us. Munge it so it does
3752 if (TREE_CODE (x
) == TYPE_DECL
)
3754 tree name
= DECL_NAME (x
);
3756 tree
*ptr
= (tree
*)0;
3757 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3759 tree shadowed
= b
->type_shadowed
;
3760 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3761 if (TREE_PURPOSE (shadowed
) == name
)
3763 ptr
= &TREE_VALUE (shadowed
);
3764 /* Can't break out of the loop here because sometimes
3765 a binding level will have duplicate bindings for
3766 PT names. It's gross, but I haven't time to fix it. */
3769 newval
= TREE_TYPE (x
);
3770 if (ptr
== (tree
*)0)
3772 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3773 up here if this is changed to an assertion. --KR */
3774 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3784 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3788 pushdecl_top_level (x
)
3791 tree cur_namespace
= current_namespace
;
3792 current_namespace
= global_namespace
;
3793 x
= pushdecl_namespace_level (x
);
3794 current_namespace
= cur_namespace
;
3798 /* Make the declaration of X appear in CLASS scope. */
3801 pushdecl_class_level (x
)
3804 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3805 scope looks for the pre-mangled name. */
3806 register tree name
= DECL_NAME (x
);
3810 if (TYPE_BEING_DEFINED (current_class_type
))
3812 /* A name N used in a class S shall refer to the same declaration
3813 in its context and when re-evaluated in the completed scope of S.
3815 Types, enums, and static vars are checked here; other
3816 members are checked in finish_struct. */
3817 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3820 && flag_optional_diags
3821 /* Don't complain about inherited names. */
3822 && id_in_current_class (name
)
3823 /* Or shadowed tags. */
3824 && !(DECL_DECLARES_TYPE_P (icv
)
3825 && DECL_CONTEXT (icv
) == current_class_type
))
3827 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name
, x
);
3828 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
3833 push_class_level_binding (name
, x
);
3834 if (TREE_CODE (x
) == TYPE_DECL
)
3836 set_identifier_type_value (name
, TREE_TYPE (x
));
3843 /* This function is used to push the mangled decls for nested types into
3844 the appropriate scope. Previously pushdecl_top_level was used, but that
3845 is incorrect for members of local classes. */
3848 pushdecl_nonclass_level (x
)
3851 struct binding_level
*b
= current_binding_level
;
3853 my_friendly_assert (b
->parm_flag
!= 2, 180);
3856 /* Get out of template binding levels */
3857 while (b
->pseudo_global
)
3861 pushdecl_with_scope (x
, b
);
3865 /* Make the declaration(s) of X appear in CLASS scope
3866 under the name NAME. */
3869 push_class_level_binding (name
, x
)
3873 /* The class_binding_level will be NULL if x is a template
3874 parameter name in a member template. */
3875 if (!class_binding_level
)
3878 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3879 && purpose_member (name
, class_binding_level
->class_shadowed
))
3882 maybe_push_cache_obstack ();
3883 class_binding_level
->class_shadowed
3884 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3885 class_binding_level
->class_shadowed
);
3887 IDENTIFIER_CLASS_VALUE (name
) = x
;
3888 obstack_ptr_grow (&decl_obstack
, x
);
3891 /* Insert another USING_DECL into the current binding level,
3892 returning this declaration. If this is a redeclaration,
3893 do nothing and return NULL_TREE. */
3896 push_using_decl (scope
, name
)
3902 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
3903 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
3904 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
3905 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
3909 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
3910 DECL_INITIAL (decl
) = scope
;
3911 TREE_CHAIN (decl
) = current_binding_level
->usings
;
3912 current_binding_level
->usings
= decl
;
3916 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3917 changed (i.e. there was already a directive), or the fresh
3918 TREE_LIST otherwise. */
3921 push_using_directive (used
)
3924 tree ud
= current_binding_level
->using_directives
;
3925 tree iter
, ancestor
;
3927 /* Check if we already have this. */
3928 if (purpose_member (used
, ud
) != NULL_TREE
)
3931 /* Recursively add all namespaces used. */
3932 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
3933 push_using_directive (TREE_PURPOSE (iter
));
3935 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
3936 ud
= current_binding_level
->using_directives
;
3937 ud
= perm_tree_cons (used
, ancestor
, ud
);
3938 current_binding_level
->using_directives
= ud
;
3942 /* DECL is a FUNCTION_DECL which may have other definitions already in
3943 place. We get around this by making the value of the identifier point
3944 to a list of all the things that want to be referenced by that name. It
3945 is then up to the users of that name to decide what to do with that
3948 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3949 slot. It is dealt with the same way.
3951 The value returned may be a previous declaration if we guessed wrong
3952 about what language DECL should belong to (C or C++). Otherwise,
3953 it's always DECL (and never something that's not a _DECL). */
3956 push_overloaded_decl (decl
, forgettable
)
3960 tree orig_name
= DECL_NAME (decl
);
3962 int doing_global
= (namespace_bindings_p () || ! forgettable
);
3966 old
= namespace_binding (orig_name
, DECL_CONTEXT (decl
));
3967 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3968 && DECL_ARTIFICIAL (old
)
3969 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3971 if (duplicate_decls (decl
, old
))
3978 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
3980 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
3982 current_binding_level
->shadowed
3983 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
3990 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
3992 tree t
= TREE_TYPE (old
);
3993 if (IS_AGGR_TYPE (t
) && warn_shadow
3994 && (! DECL_IN_SYSTEM_HEADER (decl
)
3995 || ! DECL_IN_SYSTEM_HEADER (old
)))
3996 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
3999 else if (is_overloaded_fn (old
))
4003 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
4004 if (decl
== OVL_CURRENT (tmp
)
4005 || duplicate_decls (decl
, OVL_CURRENT (tmp
)))
4006 return OVL_CURRENT (tmp
);
4010 cp_error_at ("previous non-function declaration `%#D'", old
);
4011 cp_error ("conflicts with function declaration `%#D'", decl
);
4016 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4018 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4019 old
= ovl_cons (old
, NULL_TREE
);
4020 old
= ovl_cons (decl
, old
);
4023 /* orig_name is not ambiguous. */
4027 set_namespace_binding (orig_name
, current_namespace
, old
);
4029 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
4034 /* Generate an implicit declaration for identifier FUNCTIONID
4035 as a function of type int (). Print a warning if appropriate. */
4038 implicitly_declare (functionid
)
4042 int temp
= allocation_temporary_p ();
4044 push_obstacks_nochange ();
4046 /* Save the decl permanently so we can warn if definition follows.
4047 In ANSI C, warn_implicit is usually false, so the saves little space.
4048 But in C++, it's usually true, hence the extra code. */
4049 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
4050 end_temporary_allocation ();
4052 /* We used to reuse an old implicit decl here,
4053 but this loses with inline functions because it can clobber
4054 the saved decl chains. */
4055 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4057 DECL_EXTERNAL (decl
) = 1;
4058 TREE_PUBLIC (decl
) = 1;
4060 /* ANSI standard says implicit declarations are in the innermost block.
4061 So we record the decl in the standard fashion. */
4063 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
4066 /* Only one warning per identifier. */
4067 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4069 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4072 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4079 /* Return zero if the declaration NEWDECL is valid
4080 when the declaration OLDDECL (assumed to be for the same name)
4081 has already been seen.
4082 Otherwise return an error message format string with a %s
4083 where the identifier should go. */
4086 redeclaration_error_message (newdecl
, olddecl
)
4087 tree newdecl
, olddecl
;
4089 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4091 /* Because C++ can put things into name space for free,
4092 constructs like "typedef struct foo { ... } foo"
4093 would look like an erroneous redeclaration. */
4094 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
4097 return "redefinition of `%#D'";
4099 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4101 /* If this is a pure function, its olddecl will actually be
4102 the original initialization to `0' (which we force to call
4103 abort()). Don't complain about redefinition in this case. */
4104 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
4107 /* If both functions come from different namespaces, this is not
4108 a redeclaration - this is a conflict with a used function. */
4109 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4110 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4111 return "`%D' conflicts with used function";
4113 /* We'll complain about linkage mismatches in
4114 warn_extern_redeclared_static. */
4116 /* Defining the same name twice is no good. */
4117 if (DECL_INITIAL (olddecl
) != NULL_TREE
4118 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4120 if (DECL_NAME (olddecl
) == NULL_TREE
)
4121 return "`%#D' not declared in class";
4123 return "redefinition of `%#D'";
4127 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4129 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4130 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4131 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4132 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4133 && TYPE_SIZE (TREE_TYPE (newdecl
))
4134 && TYPE_SIZE (TREE_TYPE (olddecl
))))
4135 return "redefinition of `%#D'";
4138 else if (toplevel_bindings_p ())
4140 /* Objects declared at top level: */
4141 /* If at least one is a reference, it's ok. */
4142 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4144 /* Reject two definitions. */
4145 return "redefinition of `%#D'";
4149 /* Objects declared with block scope: */
4150 /* Reject two definitions, and reject a definition
4151 together with an external reference. */
4152 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4153 return "redeclaration of `%#D'";
4158 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4159 Create one if none exists so far for the current function.
4160 This function is called for both label definitions and label references. */
4166 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
4168 if (current_function_decl
== NULL_TREE
)
4170 error ("label `%s' referenced outside of any function",
4171 IDENTIFIER_POINTER (id
));
4175 if ((decl
== NULL_TREE
4176 || DECL_SOURCE_LINE (decl
) == 0)
4177 && (named_label_uses
== NULL
4178 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4179 || named_label_uses
->label_decl
!= decl
))
4181 struct named_label_list
*new_ent
;
4183 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
4184 new_ent
->label_decl
= decl
;
4185 new_ent
->names_in_scope
= current_binding_level
->names
;
4186 new_ent
->binding_level
= current_binding_level
;
4187 new_ent
->lineno_o_goto
= lineno
;
4188 new_ent
->filename_o_goto
= input_filename
;
4189 new_ent
->next
= named_label_uses
;
4190 named_label_uses
= new_ent
;
4193 /* Use a label already defined or ref'd with this name. */
4194 if (decl
!= NULL_TREE
)
4196 /* But not if it is inherited and wasn't declared to be inheritable. */
4197 if (DECL_CONTEXT (decl
) != current_function_decl
4198 && ! C_DECLARED_LABEL_FLAG (decl
))
4199 return shadow_label (id
);
4203 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4205 /* Make sure every label has an rtx. */
4208 /* A label not explicitly declared must be local to where it's ref'd. */
4209 DECL_CONTEXT (decl
) = current_function_decl
;
4211 DECL_MODE (decl
) = VOIDmode
;
4213 /* Say where one reference is to the label,
4214 for the sake of the error if it is not defined. */
4215 DECL_SOURCE_LINE (decl
) = lineno
;
4216 DECL_SOURCE_FILE (decl
) = input_filename
;
4218 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4220 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
4221 named_label_uses
->label_decl
= decl
;
4226 /* Make a label named NAME in the current function,
4227 shadowing silently any that may be inherited from containing functions
4228 or containing scopes.
4230 Note that valid use, if the label being shadowed
4231 comes from another scope in the same function,
4232 requires calling declare_nonlocal_label right away. */
4238 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
4240 if (decl
!= NULL_TREE
)
4242 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4243 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4246 return lookup_label (name
);
4249 /* Define a label, specifying the location in the source file.
4250 Return the LABEL_DECL node for the label, if the definition is valid.
4251 Otherwise return 0. */
4254 define_label (filename
, line
, name
)
4261 if (minimal_parse_mode
)
4263 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4264 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
4266 DECL_SOURCE_LINE (decl
) = line
;
4267 DECL_SOURCE_FILE (decl
) = filename
;
4272 decl
= lookup_label (name
);
4274 /* After labels, make any new cleanups go into their
4275 own new (temporary) binding contour. */
4276 current_binding_level
->more_cleanups_ok
= 0;
4278 /* If label with this name is known from an outer context, shadow it. */
4279 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
4281 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4282 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4283 decl
= lookup_label (name
);
4286 if (name
== get_identifier ("wchar_t"))
4287 cp_pedwarn ("label named wchar_t");
4289 if (DECL_INITIAL (decl
) != NULL_TREE
)
4291 cp_error ("duplicate label `%D'", decl
);
4296 struct named_label_list
*uses
, *prev
;
4299 /* Mark label as having been defined. */
4300 DECL_INITIAL (decl
) = error_mark_node
;
4301 /* Say where in the source. */
4302 DECL_SOURCE_FILE (decl
) = filename
;
4303 DECL_SOURCE_LINE (decl
) = line
;
4306 uses
= named_label_uses
;
4307 while (uses
!= NULL
)
4308 if (uses
->label_decl
== decl
)
4310 struct binding_level
*b
= current_binding_level
;
4313 tree new_decls
= b
->names
;
4314 tree old_decls
= (b
== uses
->binding_level
)
4315 ? uses
->names_in_scope
: NULL_TREE
;
4316 while (new_decls
!= old_decls
)
4318 if (TREE_CODE (new_decls
) == VAR_DECL
4319 /* Don't complain about crossing initialization
4320 of internal entities. They can't be accessed,
4321 and they should be cleaned up
4322 by the time we get to the label. */
4323 && ! DECL_ARTIFICIAL (new_decls
)
4324 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4325 && DECL_INITIAL (new_decls
) != error_mark_node
)
4326 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4330 cp_error ("jump to label `%D'", decl
);
4331 error_with_file_and_line (uses
->filename_o_goto
,
4332 uses
->lineno_o_goto
,
4336 cp_error_at (" crosses initialization of `%#D'",
4339 new_decls
= TREE_CHAIN (new_decls
);
4341 if (b
== uses
->binding_level
)
4347 prev
->next
= uses
->next
;
4349 named_label_uses
= uses
->next
;
4358 current_function_return_value
= NULL_TREE
;
4365 struct binding_level
*level
;
4366 struct cp_switch
*next
;
4369 static struct cp_switch
*switch_stack
;
4375 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4376 p
->level
= current_binding_level
;
4377 p
->next
= switch_stack
;
4384 switch_stack
= switch_stack
->next
;
4387 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4388 /* XXX Note decl is never actually used. (bpk) */
4391 define_case_label (decl
)
4394 tree cleanup
= last_cleanup_this_contour ();
4395 struct binding_level
*b
= current_binding_level
;
4400 static int explained
= 0;
4401 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4402 warning ("where case label appears here");
4405 warning ("(enclose actions of previous case statements requiring");
4406 warning ("destructors in their own binding contours.)");
4411 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4413 tree new_decls
= b
->names
;
4414 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4416 if (TREE_CODE (new_decls
) == VAR_DECL
4417 /* Don't complain about crossing initialization
4418 of internal entities. They can't be accessed,
4419 and they should be cleaned up
4420 by the time we get to the label. */
4421 && ! DECL_ARTIFICIAL (new_decls
)
4422 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4423 && DECL_INITIAL (new_decls
) != error_mark_node
)
4424 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4427 error ("jump to case label");
4429 cp_error_at (" crosses initialization of `%#D'",
4435 /* After labels, make any new cleanups go into their
4436 own new (temporary) binding contour. */
4438 current_binding_level
->more_cleanups_ok
= 0;
4439 current_function_return_value
= NULL_TREE
;
4442 /* Return the list of declarations of the current level.
4443 Note that this list is in reverse order unless/until
4444 you nreverse it; and when you do nreverse it, you must
4445 store the result back using `storedecls' or you will lose. */
4450 return current_binding_level
->names
;
4453 /* Return the list of type-tags (for structs, etc) of the current level. */
4458 return current_binding_level
->tags
;
4461 /* Store the list of declarations of the current level.
4462 This is done for the parameter declarations of a function being defined,
4463 after they are modified in the light of any missing parameters. */
4469 current_binding_level
->names
= decls
;
4472 /* Similarly, store the list of tags of the current level. */
4478 current_binding_level
->tags
= tags
;
4481 /* Given NAME, an IDENTIFIER_NODE,
4482 return the structure (or union or enum) definition for that name.
4483 Searches binding levels from BINDING_LEVEL up to the global level.
4484 If THISLEVEL_ONLY is nonzero, searches only the specified context
4485 (but skips any tag-transparent contexts to find one that is
4486 meaningful for tags).
4487 FORM says which kind of type the caller wants;
4488 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4489 If the wrong kind of type is found, and it's not a template, an error is
4493 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4494 enum tree_code form
;
4496 struct binding_level
*binding_level
;
4499 register struct binding_level
*level
;
4500 /* Non-zero if, we should look past a pseudo-global level, even if
4502 int allow_pseudo_global
= 1;
4504 for (level
= binding_level
; level
; level
= level
->level_chain
)
4507 if (ANON_AGGRNAME_P (name
))
4508 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4510 /* There's no need for error checking here, because
4511 anon names are unique throughout the compilation. */
4512 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4513 return TREE_VALUE (tail
);
4515 else if (level
->namespace_p
)
4516 /* Do namespace lookup. */
4517 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
4519 tree old
= binding_for_name (name
, tail
);
4521 /* If we just skipped past a pseudo global level, even
4522 though THISLEVEL_ONLY, and we find a template class
4523 declaration, then we use the _TYPE node for the
4524 template. See the example below. */
4525 if (thislevel_only
&& !allow_pseudo_global
4526 && old
&& BINDING_VALUE (old
)
4527 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
4528 old
= TREE_TYPE (BINDING_VALUE (old
));
4530 old
= BINDING_TYPE (old
);
4532 /* If it has an original type, it is a typedef, and we
4533 should not return it. */
4534 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
4536 if (old
&& TREE_CODE (old
) != form
4537 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
4539 cp_error ("`%#D' redeclared as %C", old
, form
);
4544 if (thislevel_only
|| tail
== global_namespace
)
4548 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4550 if (TREE_PURPOSE (tail
) == name
)
4552 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4553 /* Should tighten this up; it'll probably permit
4554 UNION_TYPE and a struct template, for example. */
4556 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4558 /* Definition isn't the kind we were looking for. */
4559 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4563 return TREE_VALUE (tail
);
4566 if (thislevel_only
&& ! level
->tag_transparent
)
4568 if (level
->pseudo_global
&& allow_pseudo_global
)
4570 /* We must deal with cases like this:
4572 template <class T> struct S;
4573 template <class T> struct S {};
4575 When looking up `S', for the second declaration, we
4576 would like to find the first declaration. But, we
4577 are in the pseudo-global level created for the
4578 template parameters, rather than the (surrounding)
4579 namespace level. Thus, we keep going one more level,
4580 even though THISLEVEL_ONLY is non-zero. */
4581 allow_pseudo_global
= 0;
4587 if (current_class_type
&& level
->level_chain
->namespace_p
)
4589 /* Try looking in this class's tags before heading into
4590 global binding level. */
4591 tree context
= current_class_type
;
4594 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4598 these_tags
= CLASSTYPE_TAGS (context
);
4599 if (ANON_AGGRNAME_P (name
))
4602 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4604 return TREE_VALUE (tail
);
4605 these_tags
= TREE_CHAIN (these_tags
);
4610 if (TREE_PURPOSE (these_tags
) == name
)
4612 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4614 cp_error ("`%#D' redeclared as %C in class scope",
4615 TREE_VALUE (tail
), form
);
4618 return TREE_VALUE (tail
);
4620 these_tags
= TREE_CHAIN (these_tags
);
4622 /* If this type is not yet complete, then don't
4623 look at its context. */
4624 if (TYPE_SIZE (context
) == NULL_TREE
)
4626 /* Go to next enclosing type, if any. */
4627 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4630 context
= DECL_CONTEXT (context
);
4633 my_friendly_abort (10);
4646 set_current_level_tags_transparency (tags_transparent
)
4647 int tags_transparent
;
4649 current_binding_level
->tag_transparent
= tags_transparent
;
4653 /* Given a type, find the tag that was defined for it and return the tag name.
4654 Otherwise return 0. However, the value can never be 0
4655 in the cases in which this is used.
4657 C++: If NAME is non-zero, this is the new name to install. This is
4658 done when replacing anonymous tags with real tag names. */
4661 lookup_tag_reverse (type
, name
)
4665 register struct binding_level
*level
;
4667 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4670 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4672 if (TREE_VALUE (tail
) == type
)
4675 TREE_PURPOSE (tail
) = name
;
4676 return TREE_PURPOSE (tail
);
4683 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4684 Return the type value, or NULL_TREE if not found. */
4687 lookup_nested_type (type
, context
)
4691 if (context
== NULL_TREE
)
4695 switch (TREE_CODE (context
))
4699 tree ctype
= TREE_TYPE (context
);
4700 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4702 return TREE_VALUE (match
);
4703 context
= DECL_CONTEXT (context
);
4705 /* When we have a nested class whose member functions have
4706 local types (e.g., a set of enums), we'll arrive here
4707 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4708 the enclosing class. Instead, we want to make sure we
4709 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4710 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4711 context
= TREE_CHAIN (context
);
4715 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4716 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4719 my_friendly_abort (12);
4725 /* Look up NAME in the NAMESPACE. */
4728 lookup_namespace_name (namespace, name
)
4729 tree
namespace, name
;
4731 struct tree_binding _b
;
4734 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
4735 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4737 val
= binding_init (&_b
);
4738 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4739 return error_mark_node
;
4741 if (BINDING_VALUE (val
))
4743 val
= BINDING_VALUE (val
);
4745 /* If we have a single function from a using decl, pull it out. */
4746 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4747 val
= OVL_FUNCTION (val
);
4751 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4752 return error_mark_node
;
4756 make_typename_type (context
, name
)
4762 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4763 name
= TYPE_IDENTIFIER (name
);
4764 else if (TREE_CODE (name
) == TYPE_DECL
)
4765 name
= DECL_NAME (name
);
4769 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4771 name
= TREE_OPERAND (name
, 0);
4772 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4773 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4775 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4776 my_friendly_abort (2000);
4778 if (! uses_template_parms (context
)
4779 || currently_open_class (context
))
4781 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4783 if (IS_AGGR_TYPE (context
))
4784 t
= lookup_field (context
, name
, 0, 0);
4788 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4789 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4791 cp_error ("no class template named `%#T' in `%#T'",
4793 return error_mark_node
;
4796 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4798 /*entering_scope=*/0);
4802 if (IS_AGGR_TYPE (context
))
4803 t
= lookup_field (context
, name
, 0, 1);
4809 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4810 return error_mark_node
;
4813 return TREE_TYPE (t
);
4817 if (processing_template_decl
)
4818 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4819 t
= make_lang_type (TYPENAME_TYPE
);
4820 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4821 d
= build_decl (TYPE_DECL
, name
, t
);
4822 if (processing_template_decl
)
4825 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4826 TYPE_NAME (TREE_TYPE (d
)) = d
;
4827 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4828 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4829 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4834 /* Select the right _DECL from multiple choices. */
4837 select_decl (binding
, flags
)
4842 val
= BINDING_VALUE (binding
);
4843 if (LOOKUP_NAMESPACES_ONLY (flags
))
4845 /* We are not interested in types. */
4846 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4851 /* If we could have a type and
4852 we have nothing or we need a type and have none. */
4853 if (BINDING_TYPE (binding
)
4854 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4855 && TREE_CODE (val
) != TYPE_DECL
)))
4856 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4857 /* Don't return non-types if we really prefer types. */
4858 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4859 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4865 /* Unscoped lookup of a global, iterate over namespaces, considering
4866 using namespace statements. */
4869 unqualified_namespace_lookup (name
, flags
)
4873 struct tree_binding _binding
;
4874 tree b
= binding_init (&_binding
);
4875 tree initial
= current_decl_namespace();
4876 tree scope
= initial
;
4878 struct binding_level
*level
;
4879 tree val
= NULL_TREE
;
4883 val
= binding_for_name (name
, scope
);
4885 /* Initialize binding for this context. */
4886 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4887 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4889 /* Add all _DECLs seen through local using-directives. */
4890 for (level
= current_binding_level
;
4891 !level
->namespace_p
;
4892 level
= level
->level_chain
)
4893 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4895 /* Give up because of error. */
4898 /* Add all _DECLs seen through global using-directives. */
4899 /* XXX local and global using lists should work equally. */
4903 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4905 /* Give up because of error. */
4907 if (siter
== scope
) break;
4908 siter
= CP_DECL_CONTEXT (siter
);
4911 val
= select_decl (b
, flags
);
4912 if (scope
== global_namespace
)
4914 scope
= CP_DECL_CONTEXT (scope
);
4919 /* Combine prefer_type and namespaces_only into flags. */
4922 lookup_flags (prefer_type
, namespaces_only
)
4923 int prefer_type
, namespaces_only
;
4925 if (namespaces_only
)
4926 return LOOKUP_PREFER_NAMESPACES
;
4927 if (prefer_type
> 1)
4928 return LOOKUP_PREFER_TYPES
;
4929 if (prefer_type
> 0)
4930 return LOOKUP_PREFER_BOTH
;
4934 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4935 ignore it or not. Subroutine of lookup_name_real. */
4938 qualify_lookup (val
, flags
)
4942 if (val
== NULL_TREE
)
4944 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
4946 if ((flags
& LOOKUP_PREFER_TYPES
)
4947 && (TREE_CODE (val
) == TYPE_DECL
4948 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
4949 && DECL_CLASS_TEMPLATE_P (val
))))
4951 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
4956 /* Look up NAME in the current binding level and its superiors in the
4957 namespace of variables, functions and typedefs. Return a ..._DECL
4958 node of some kind representing its definition if there is only one
4959 such declaration, or return a TREE_LIST with all the overloaded
4960 definitions if there are many, or return 0 if it is undefined.
4962 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4963 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4964 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4965 Otherwise we prefer non-TYPE_DECLs.
4967 If NONCLASS is non-zero, we don't look for the NAME in class scope,
4968 using IDENTIFIER_CLASS_VALUE. */
4971 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
4973 int prefer_type
, nonclass
, namespaces_only
;
4977 tree from_obj
= NULL_TREE
;
4978 tree locval
, classval
;
4981 /* Hack: copy flag set by parser, if set. */
4982 if (only_namespace_names
)
4983 namespaces_only
= 1;
4985 if (prefer_type
== -2)
4987 extern int looking_for_typename
;
4988 tree type
= NULL_TREE
;
4991 prefer_type
= looking_for_typename
;
4993 flags
= lookup_flags (prefer_type
, namespaces_only
);
4994 /* During parsing, we need to complain. */
4995 flags
|= LOOKUP_COMPLAIN
;
4996 /* If the next thing is '<', class templates are types. */
4997 if (looking_for_template
)
4998 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5000 /* std:: becomes :: for now. */
5001 if (got_scope
== std_node
)
5002 got_scope
= void_type_node
;
5006 else if (got_object
!= error_mark_node
)
5011 if (type
== error_mark_node
)
5012 return error_mark_node
;
5013 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5014 type
= TREE_TYPE (type
);
5017 type
= complete_type (type
);
5019 if (TREE_CODE (type
) == VOID_TYPE
)
5020 type
= global_namespace
;
5021 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5023 struct tree_binding b
;
5024 val
= binding_init (&b
);
5025 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5027 val
= select_decl (val
, flags
);
5029 else if (! IS_AGGR_TYPE (type
)
5030 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5031 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5032 || TREE_CODE (type
) == TYPENAME_TYPE
)
5033 /* Someone else will give an error about this if needed. */
5035 else if (TYPE_BEING_DEFINED (type
))
5037 val
= IDENTIFIER_CLASS_VALUE (name
);
5038 if (val
&& DECL_CONTEXT (val
) != type
)
5040 struct binding_level
*b
= class_binding_level
;
5041 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5043 tree t
= purpose_member (name
, b
->class_shadowed
);
5044 if (t
&& TREE_VALUE (t
)
5045 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5047 val
= TREE_VALUE (t
);
5052 if (val
== NULL_TREE
)
5053 val
= lookup_field (type
, name
, 0, 1);
5055 else if (type
== current_class_type
)
5056 val
= IDENTIFIER_CLASS_VALUE (name
);
5058 val
= lookup_member (type
, name
, 0, prefer_type
);
5065 else if (got_object
&& val
)
5069 flags
= lookup_flags (prefer_type
, namespaces_only
);
5071 locval
= classval
= NULL_TREE
;
5073 if (! namespace_bindings_p ())
5074 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5076 /* In C++ class fields are between local and global scope,
5077 just before the global scope. */
5078 if (current_class_type
&& ! nonclass
)
5080 classval
= IDENTIFIER_CLASS_VALUE (name
);
5081 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5082 /* Try to find values from base classes if we are presently
5083 defining a type. We are presently only interested in
5085 classval
= lookup_field (current_class_type
, name
, 0, 1);
5087 /* Add implicit 'typename' to types from template bases. lookup_field
5088 will do this for us. If classval is actually from an enclosing
5089 scope, lookup_nested_field will get it for us. */
5090 else if (processing_template_decl
5091 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5092 && ! currently_open_class (DECL_CONTEXT (classval
))
5093 && uses_template_parms (current_class_type
)
5094 && ! DECL_ARTIFICIAL (classval
))
5095 classval
= lookup_field (current_class_type
, name
, 0, 1);
5097 /* yylex() calls this with -2, since we should never start digging for
5098 the nested name at the point where we haven't even, for example,
5099 created the COMPONENT_REF or anything like that. */
5100 if (classval
== NULL_TREE
)
5101 classval
= lookup_nested_field (name
, ! yylex
);
5103 classval
= qualify_lookup (classval
, flags
);
5106 if (locval
&& classval
)
5108 if (current_scope () == current_function_decl
5109 && ! hack_decl_function_context (current_function_decl
))
5110 /* Not in a nested function. */
5114 /* This is incredibly horrible. The whole concept of
5115 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5116 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5118 tree lctx
= hack_decl_function_context (locval
);
5119 tree cctx
= hack_decl_function_context (classval
);
5121 if (lctx
== current_scope ())
5123 else if (lctx
== cctx
)
5126 /* I don't know which is right; let's just guess for now. */
5135 val
= unqualified_namespace_lookup (name
, flags
);
5137 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5138 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5139 && TREE_TYPE (TREE_TYPE (val
)))
5141 tree nsval
= unqualified_namespace_lookup (name
, flags
);
5143 if (val
&& nsval
&& TREE_CODE (nsval
) == TYPE_DECL
)
5145 static int explained
;
5146 cp_warning ("namespace-scope type `%#D'", nsval
);
5148 (" is used instead of `%D' from dependent base class", val
);
5152 cp_warning (" (use `typename %D' if that's what you meant)",
5162 /* This should only warn about types used in qualified-ids. */
5163 if (from_obj
&& from_obj
!= val
)
5165 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5166 && TREE_CODE (val
) == TYPE_DECL
5167 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5169 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5170 name
, got_object
, TREE_TYPE (from_obj
));
5171 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5175 /* We don't change val to from_obj if got_object depends on
5176 template parms because that breaks implicit typename for
5177 destructor calls. */
5178 if (! uses_template_parms (got_object
))
5182 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5183 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5185 /* Caller wants a class-or-namespace-name. */
5186 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5188 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5189 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5190 else if (TREE_TYPE (val
) == error_mark_node
)
5191 val
= error_mark_node
;
5193 /* If we have a single function from a using decl, pull it out. */
5194 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5195 val
= OVL_FUNCTION (val
);
5204 lookup_name_nonclass (name
)
5207 return lookup_name_real (name
, 0, 1, 0);
5211 lookup_function_nonclass (name
, args
)
5215 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5219 lookup_name_namespace_only (name
)
5222 /* type-or-namespace, nonclass, namespace_only */
5223 return lookup_name_real (name
, 1, 1, 1);
5227 lookup_name (name
, prefer_type
)
5231 return lookup_name_real (name
, prefer_type
, 0, 0);
5234 /* Similar to `lookup_name' but look only at current binding level. */
5237 lookup_name_current_level (name
)
5240 register tree t
= NULL_TREE
;
5242 if (current_binding_level
->namespace_p
)
5244 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5246 /* extern "C" function() */
5247 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5250 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5252 struct binding_level
*b
= current_binding_level
;
5255 if (purpose_member (name
, b
->shadowed
))
5256 return IDENTIFIER_LOCAL_VALUE (name
);
5267 /* Like lookup_name_current_level, but for types. */
5270 lookup_type_current_level (name
)
5273 register tree t
= NULL_TREE
;
5275 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5277 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5278 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5280 struct binding_level
*b
= current_binding_level
;
5283 if (purpose_member (name
, b
->type_shadowed
))
5284 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5296 begin_only_namespace_names ()
5298 only_namespace_names
= 1;
5302 end_only_namespace_names ()
5304 only_namespace_names
= 0;
5307 /* Arrange for the user to get a source line number, even when the
5308 compiler is going down in flames, so that she at least has a
5309 chance of working around problems in the compiler. We used to
5310 call error(), but that let the segmentation fault continue
5311 through; now, it's much more passive by asking them to send the
5312 maintainers mail about the problem. */
5316 int sig ATTRIBUTE_UNUSED
;
5318 signal (SIGSEGV
, SIG_DFL
);
5320 signal (SIGIOT
, SIG_DFL
);
5323 signal (SIGILL
, SIG_DFL
);
5326 signal (SIGABRT
, SIG_DFL
);
5329 signal (SIGBUS
, SIG_DFL
);
5331 my_friendly_abort (0);
5335 /* Unused -- brendan 970107 */
5336 /* Array for holding types considered "built-in". These types
5337 are output in the module in which `main' is defined. */
5338 static tree
*builtin_type_tdescs_arr
;
5339 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5342 /* Push the declarations of builtin types into the namespace.
5343 RID_INDEX, if < RID_MAX is the index of the builtin type
5344 in the array RID_POINTERS. NAME is the name used when looking
5345 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5348 record_builtin_type (rid_index
, name
, type
)
5353 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5354 tree tdecl
= NULL_TREE
;
5356 if ((int) rid_index
< (int) RID_MAX
)
5357 rname
= ridpointers
[(int) rid_index
];
5359 tname
= get_identifier (name
);
5361 TYPE_BUILT_IN (type
) = 1;
5365 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5366 set_identifier_type_value (tname
, NULL_TREE
);
5367 if ((int) rid_index
< (int) RID_MAX
)
5368 /* Built-in types live in the global namespace. */
5369 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5371 if (rname
!= NULL_TREE
)
5373 if (tname
!= NULL_TREE
)
5375 set_identifier_type_value (rname
, NULL_TREE
);
5376 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5380 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5381 set_identifier_type_value (rname
, NULL_TREE
);
5386 /* Record one of the standard Java types.
5387 * Declare it as having the given NAME.
5388 * If SIZE > 0, it is the size of one of the integral types;
5389 * otherwise it is the negative of the size of one of the other types. */
5392 record_builtin_java_type (name
, size
)
5398 type
= make_signed_type (size
);
5399 else if (size
> -32)
5400 { /* "__java_char" or ""__java_boolean". */
5401 type
= make_unsigned_type (-size
);
5402 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5405 { /* "__java_float" or ""__java_double". */
5406 type
= make_node (REAL_TYPE
);
5407 TYPE_PRECISION (type
) = - size
;
5410 record_builtin_type (RID_MAX
, name
, type
);
5411 decl
= TYPE_NAME (type
);
5412 DECL_IGNORED_P (decl
) = 1;
5413 TYPE_FOR_JAVA (type
) = 1;
5417 /* Push a type into the namespace so that the back-ends ignore it. */
5420 record_unknown_type (type
, name
)
5424 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5425 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5426 DECL_IGNORED_P (decl
) = 1;
5427 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5428 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5429 TYPE_ALIGN (type
) = 1;
5430 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5433 /* Push overloaded decl, in global scope, with one argument so it
5434 can be used as a callback from define_function. */
5437 push_overloaded_decl_1 (x
)
5440 push_overloaded_decl (x
, 0);
5447 auto_function (name
, type
, code
)
5449 enum built_in_function code
;
5451 return define_function
5452 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5453 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5457 /* Create the predefined scalar types of C,
5458 and some nodes representing standard constants (0, 1, (void *)0).
5459 Initialize the global binding level.
5460 Make definitions for built-in primitive functions. */
5463 init_decl_processing ()
5465 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5467 /* Data type of memcpy. */
5468 tree memcpy_ftype
, strlen_ftype
;
5469 int wchar_type_size
;
5471 tree array_domain_type
;
5472 extern int flag_strict_prototype
;
5473 tree vb_off_identifier
= NULL_TREE
;
5474 /* Function type `char *(char *, char *)' and similar ones */
5475 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5476 tree sizetype_endlink
;
5477 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5478 tree void_ftype
, void_ftype_int
, void_ftype_ptr
, ptr_ftype_void
;
5480 /* Have to make these distinct before we try using them. */
5481 lang_name_cplusplus
= get_identifier ("C++");
5482 lang_name_c
= get_identifier ("C");
5483 lang_name_java
= get_identifier ("Java");
5485 /* Enter the global namespace. */
5486 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5487 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5488 current_lang_name
= lang_name_cplusplus
;
5489 push_namespace (get_identifier ("::"));
5490 global_namespace
= current_namespace
;
5491 current_lang_name
= NULL_TREE
;
5493 if (flag_strict_prototype
== 2)
5496 strict_prototypes_lang_c
= strict_prototypes_lang_cplusplus
;
5499 strict_prototypes_lang_c
= flag_strict_prototype
;
5502 current_lang_name
= lang_name_c
;
5504 current_function_decl
= NULL_TREE
;
5505 named_labels
= NULL_TREE
;
5506 named_label_uses
= NULL
;
5507 current_binding_level
= NULL_BINDING_LEVEL
;
5508 free_binding_level
= NULL_BINDING_LEVEL
;
5510 #ifndef __CYGWIN32__
5511 /* Because most segmentation signals can be traced back into user
5512 code, catch them and at least give the user a chance of working
5513 around compiler bugs. */
5514 signal (SIGSEGV
, signal_catch
);
5516 /* We will also catch aborts in the back-end through signal_catch and
5517 give the user a chance to see where the error might be, and to defeat
5518 aborts in the back-end when there have been errors previously in their
5521 signal (SIGIOT
, signal_catch
);
5524 signal (SIGILL
, signal_catch
);
5527 signal (SIGABRT
, signal_catch
);
5530 signal (SIGBUS
, signal_catch
);
5532 #else /* ndef __CYGWIN32__ */
5533 /* Cygwin32 cannot handle catching signals other than
5534 SIGABRT yet. We hope this will cease to be the case soon. */
5536 signal (SIGABRT
, signal_catch
);
5538 #endif /* ndef __CYGWIN32__ */
5540 gcc_obstack_init (&decl_obstack
);
5542 /* Must lay these out before anything else gets laid out. */
5543 error_mark_node
= make_node (ERROR_MARK
);
5544 TREE_PERMANENT (error_mark_node
) = 1;
5545 TREE_TYPE (error_mark_node
) = error_mark_node
;
5546 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5547 TREE_TYPE (error_mark_list
) = error_mark_node
;
5549 /* Make the binding_level structure for global names. */
5551 global_binding_level
= current_binding_level
;
5552 /* The global level is the namespace level of ::. */
5553 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5554 declare_namespace_level ();
5556 this_identifier
= get_identifier (THIS_NAME
);
5557 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5558 ctor_identifier
= get_identifier (CTOR_NAME
);
5559 dtor_identifier
= get_identifier (DTOR_NAME
);
5560 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5561 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5562 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5563 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5564 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5565 if (flag_handle_signatures
)
5567 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5568 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5569 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5572 /* Define `int' and `char' first so that dbx will output them first. */
5574 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5575 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5577 /* Define `char', which is like either `signed char' or `unsigned char'
5578 but not the same as either. */
5582 ? make_signed_type (CHAR_TYPE_SIZE
)
5583 : make_unsigned_type (CHAR_TYPE_SIZE
));
5584 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5586 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5587 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5589 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5590 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5592 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5593 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5594 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5596 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5597 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5599 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5600 record_builtin_type (RID_MAX
, "long long unsigned int",
5601 long_long_unsigned_type_node
);
5602 record_builtin_type (RID_MAX
, "long long unsigned",
5603 long_long_unsigned_type_node
);
5605 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5606 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5607 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5608 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5609 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5611 /* `unsigned long' is the standard type for sizeof.
5612 Note that stddef.h uses `unsigned long',
5613 and this must agree, even if long and int are the same size. */
5615 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5618 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5620 /* Define both `signed char' and `unsigned char'. */
5621 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5622 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5623 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5624 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5626 /* These are types that type_for_size and type_for_mode use. */
5627 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5628 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5629 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5630 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5631 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5632 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5633 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5634 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5635 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5636 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5637 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5638 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5639 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5640 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5641 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5642 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5643 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5644 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5645 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5646 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5648 float_type_node
= make_node (REAL_TYPE
);
5649 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5650 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5651 layout_type (float_type_node
);
5653 double_type_node
= make_node (REAL_TYPE
);
5654 if (flag_short_double
)
5655 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5657 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5658 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5659 layout_type (double_type_node
);
5661 long_double_type_node
= make_node (REAL_TYPE
);
5662 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5663 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5664 layout_type (long_double_type_node
);
5666 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5667 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5668 complex_integer_type_node
));
5669 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5670 layout_type (complex_integer_type_node
);
5672 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5673 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5674 complex_float_type_node
));
5675 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5676 layout_type (complex_float_type_node
);
5678 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5679 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5680 complex_double_type_node
));
5681 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5682 layout_type (complex_double_type_node
);
5684 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5685 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5686 complex_long_double_type_node
));
5687 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5688 layout_type (complex_long_double_type_node
);
5690 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5691 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5692 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5693 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5694 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5695 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5696 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5697 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5699 integer_zero_node
= build_int_2 (0, 0);
5700 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5701 integer_one_node
= build_int_2 (1, 0);
5702 TREE_TYPE (integer_one_node
) = integer_type_node
;
5703 integer_two_node
= build_int_2 (2, 0);
5704 TREE_TYPE (integer_two_node
) = integer_type_node
;
5705 integer_three_node
= build_int_2 (3, 0);
5706 TREE_TYPE (integer_three_node
) = integer_type_node
;
5708 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5709 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5710 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5711 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5712 TYPE_PRECISION (boolean_type_node
) = 1;
5713 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5714 boolean_false_node
= build_int_2 (0, 0);
5715 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5716 boolean_true_node
= build_int_2 (1, 0);
5717 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5719 /* These are needed by stor-layout.c. */
5720 size_zero_node
= size_int (0);
5721 size_one_node
= size_int (1);
5723 signed_size_zero_node
= build_int_2 (0, 0);
5724 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5726 void_type_node
= make_node (VOID_TYPE
);
5727 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5728 layout_type (void_type_node
); /* Uses integer_zero_node. */
5729 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5730 TREE_PARMLIST (void_list_node
) = 1;
5732 null_pointer_node
= build_int_2 (0, 0);
5733 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5734 layout_type (TREE_TYPE (null_pointer_node
));
5736 /* Used for expressions that do nothing, but are not errors. */
5737 void_zero_node
= build_int_2 (0, 0);
5738 TREE_TYPE (void_zero_node
) = void_type_node
;
5740 string_type_node
= build_pointer_type (char_type_node
);
5741 const_string_type_node
5742 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5744 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5747 /* Make a type to be the domain of a few array types
5748 whose domains don't really matter.
5749 200 is small enough that it always fits in size_t
5750 and large enough that it can hold most function names for the
5751 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5752 array_domain_type
= build_index_type (build_int_2 (200, 0));
5754 /* Make a type for arrays of characters.
5755 With luck nothing will ever really depend on the length of this
5757 char_array_type_node
5758 = build_array_type (char_type_node
, array_domain_type
);
5759 /* Likewise for arrays of ints. */
5761 = build_array_type (integer_type_node
, array_domain_type
);
5763 /* This is just some anonymous class type. Nobody should ever
5764 need to look inside this envelope. */
5765 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5767 default_function_type
5768 = build_function_type (integer_type_node
, NULL_TREE
);
5770 ptr_type_node
= build_pointer_type (void_type_node
);
5772 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5774 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5776 endlink
= void_list_node
;
5777 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5778 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5779 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5781 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5782 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5783 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5784 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5785 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5787 void_ftype
= build_function_type (void_type_node
, endlink
);
5788 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5790 = build_function_type (void_type_node
,
5791 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5793 = build_exception_variant (void_ftype_ptr
,
5794 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5797 = build_function_type (float_type_node
,
5798 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5801 = build_function_type (double_type_node
, double_endlink
);
5803 ldouble_ftype_ldouble
5804 = build_function_type (long_double_type_node
,
5805 tree_cons (NULL_TREE
, long_double_type_node
,
5808 double_ftype_double_double
5809 = build_function_type (double_type_node
,
5810 tree_cons (NULL_TREE
, double_type_node
,
5814 = build_function_type (integer_type_node
, int_endlink
);
5817 = build_function_type (long_integer_type_node
,
5818 tree_cons (NULL_TREE
, long_integer_type_node
,
5821 int_ftype_cptr_cptr_sizet
5822 = build_function_type (integer_type_node
,
5823 tree_cons (NULL_TREE
, const_ptr_type_node
,
5824 tree_cons (NULL_TREE
, const_ptr_type_node
,
5825 tree_cons (NULL_TREE
,
5829 string_ftype_ptr_ptr
/* strcpy prototype */
5830 = build_function_type (string_type_node
,
5831 tree_cons (NULL_TREE
, string_type_node
,
5832 tree_cons (NULL_TREE
,
5833 const_string_type_node
,
5836 int_ftype_string_string
/* strcmp prototype */
5837 = build_function_type (integer_type_node
,
5838 tree_cons (NULL_TREE
, const_string_type_node
,
5839 tree_cons (NULL_TREE
,
5840 const_string_type_node
,
5843 strlen_ftype
/* strlen prototype */
5844 = build_function_type (sizetype
,
5845 tree_cons (NULL_TREE
, const_string_type_node
,
5848 memcpy_ftype
/* memcpy prototype */
5849 = build_function_type (ptr_type_node
,
5850 tree_cons (NULL_TREE
, ptr_type_node
,
5851 tree_cons (NULL_TREE
, const_ptr_type_node
,
5852 sizetype_endlink
)));
5854 if (flag_huge_objects
)
5855 delta_type_node
= long_integer_type_node
;
5857 delta_type_node
= short_integer_type_node
;
5859 builtin_function ("__builtin_constant_p", default_function_type
,
5860 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5862 builtin_return_address_fndecl
5863 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5864 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5866 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5867 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5869 ptr_ftype_void
= build_function_type (ptr_type_node
, endlink
);
5870 builtin_function ("__builtin_fp", ptr_ftype_void
, BUILT_IN_FP
, NULL_PTR
);
5871 builtin_function ("__builtin_sp", ptr_ftype_void
, BUILT_IN_SP
, NULL_PTR
);
5873 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5874 BUILT_IN_ALLOCA
, "alloca");
5875 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5876 /* Define alloca, ffs as builtins.
5877 Declare _exit just to mark it as volatile. */
5878 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5880 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5881 BUILT_IN_ALLOCA
, NULL_PTR
);
5882 /* Suppress error if redefined as a non-function. */
5883 DECL_BUILT_IN_NONANSI (temp
) = 1;
5884 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5885 /* Suppress error if redefined as a non-function. */
5886 DECL_BUILT_IN_NONANSI (temp
) = 1;
5887 temp
= builtin_function ("_exit", void_ftype_int
,
5888 NOT_BUILT_IN
, NULL_PTR
);
5889 TREE_THIS_VOLATILE (temp
) = 1;
5890 TREE_SIDE_EFFECTS (temp
) = 1;
5891 /* Suppress error if redefined as a non-function. */
5892 DECL_BUILT_IN_NONANSI (temp
) = 1;
5895 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5896 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5898 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5900 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5902 builtin_function ("__builtin_labs", long_ftype_long
,
5903 BUILT_IN_LABS
, NULL_PTR
);
5904 builtin_function ("__builtin_saveregs", ptr_ftype
,
5905 BUILT_IN_SAVEREGS
, NULL_PTR
);
5906 builtin_function ("__builtin_classify_type", default_function_type
,
5907 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5908 builtin_function ("__builtin_next_arg", ptr_ftype
,
5909 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5910 builtin_function ("__builtin_args_info", int_ftype_int
,
5911 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5912 builtin_function ("__builtin_setjmp",
5913 build_function_type (integer_type_node
,
5914 tree_cons (NULL_TREE
, ptr_type_node
,
5916 BUILT_IN_SETJMP
, NULL_PTR
);
5917 builtin_function ("__builtin_longjmp",
5918 build_function_type (integer_type_node
,
5919 tree_cons (NULL_TREE
, ptr_type_node
,
5920 tree_cons (NULL_TREE
,
5923 BUILT_IN_LONGJMP
, NULL_PTR
);
5925 /* Untyped call and return. */
5926 builtin_function ("__builtin_apply_args", ptr_ftype
,
5927 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5929 temp
= tree_cons (NULL_TREE
,
5930 build_pointer_type (build_function_type (void_type_node
,
5932 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
5933 builtin_function ("__builtin_apply",
5934 build_function_type (ptr_type_node
, temp
),
5935 BUILT_IN_APPLY
, NULL_PTR
);
5936 builtin_function ("__builtin_return", void_ftype_ptr
,
5937 BUILT_IN_RETURN
, NULL_PTR
);
5939 /* Currently under experimentation. */
5940 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5941 BUILT_IN_MEMCPY
, "memcpy");
5942 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5943 BUILT_IN_MEMCMP
, "memcmp");
5944 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5945 BUILT_IN_STRCMP
, "strcmp");
5946 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5947 BUILT_IN_STRCPY
, "strcpy");
5948 builtin_function ("__builtin_strlen", strlen_ftype
,
5949 BUILT_IN_STRLEN
, "strlen");
5950 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5951 BUILT_IN_FSQRT
, "sqrtf");
5952 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5953 BUILT_IN_FSQRT
, NULL_PTR
);
5954 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
5955 BUILT_IN_FSQRT
, "sqrtl");
5956 builtin_function ("__builtin_sinf", float_ftype_float
,
5957 BUILT_IN_SIN
, "sinf");
5958 builtin_function ("__builtin_sin", double_ftype_double
,
5959 BUILT_IN_SIN
, "sin");
5960 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
5961 BUILT_IN_SIN
, "sinl");
5962 builtin_function ("__builtin_cosf", float_ftype_float
,
5963 BUILT_IN_COS
, "cosf");
5964 builtin_function ("__builtin_cos", double_ftype_double
,
5965 BUILT_IN_COS
, "cos");
5966 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
5967 BUILT_IN_COS
, "cosl");
5969 if (!flag_no_builtin
)
5971 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5972 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5973 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5974 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
5975 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5977 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
5978 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
5980 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
5982 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
5984 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
5985 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
5986 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
5987 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
5989 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
5990 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
5991 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
5992 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
5993 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
5994 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
5996 /* Declare these functions volatile
5997 to avoid spurious "control drops through" warnings. */
5998 temp
= builtin_function ("abort", void_ftype
,
5999 NOT_BUILT_IN
, NULL_PTR
);
6000 TREE_THIS_VOLATILE (temp
) = 1;
6001 TREE_SIDE_EFFECTS (temp
) = 1;
6002 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6004 DECL_BUILT_IN_NONANSI (temp
) = 1;
6005 temp
= builtin_function ("exit", void_ftype_int
,
6006 NOT_BUILT_IN
, NULL_PTR
);
6007 TREE_THIS_VOLATILE (temp
) = 1;
6008 TREE_SIDE_EFFECTS (temp
) = 1;
6009 DECL_BUILT_IN_NONANSI (temp
) = 1;
6013 /* Support for these has not been written in either expand_builtin
6014 or build_function_call. */
6015 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6016 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6017 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6019 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6021 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6022 BUILT_IN_FMOD
, NULL_PTR
);
6023 builtin_function ("__builtin_frem", double_ftype_double_double
,
6024 BUILT_IN_FREM
, NULL_PTR
);
6025 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6026 BUILT_IN_MEMSET
, NULL_PTR
);
6027 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6029 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6033 /* C++ extensions */
6035 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6036 record_unknown_type (unknown_type_node
, "unknown type");
6038 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6039 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6041 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6043 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6045 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6046 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6048 /* This is for handling opaque types in signatures. */
6049 opaque_type_node
= copy_node (ptr_type_node
);
6050 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6051 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6053 /* This is special for C++ so functions can be overloaded. */
6055 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6056 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6057 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6058 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6060 = TREE_UNSIGNED (wchar_type_node
)
6061 ? unsigned_wchar_type_node
6062 : signed_wchar_type_node
;
6063 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6065 /* Artificial declaration of wchar_t -- can be bashed */
6066 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6068 pushdecl (wchar_decl_node
);
6070 /* This is for wide string constants. */
6071 wchar_array_type_node
6072 = build_array_type (wchar_type_node
, array_domain_type
);
6074 if (flag_vtable_thunks
)
6076 /* Make sure we get a unique function type, so we can give
6077 its pointer type a name. (This wins for gdb.) */
6078 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6079 TREE_TYPE (vfunc_type
) = integer_type_node
;
6080 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6081 layout_type (vfunc_type
);
6083 vtable_entry_type
= build_pointer_type (vfunc_type
);
6087 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6088 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6090 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6092 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6094 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6097 /* Make this part of an invisible union. */
6098 fields
[3] = copy_node (fields
[2]);
6099 TREE_TYPE (fields
[3]) = delta_type_node
;
6100 DECL_NAME (fields
[3]) = delta2_identifier
;
6101 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6102 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6103 TREE_UNSIGNED (fields
[3]) = 0;
6104 TREE_CHAIN (fields
[2]) = fields
[3];
6105 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6107 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6110 = build_array_type (vtable_entry_type
, NULL_TREE
);
6111 layout_type (vtbl_type_node
);
6112 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6113 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6115 /* Simplify life by making a "sigtable_entry_type". Give its
6116 fields names so that the debugger can use them. */
6118 if (flag_handle_signatures
)
6120 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6121 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6123 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6125 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6127 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6129 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6132 /* Set the alignment to the max of the alignment of ptr_type_node and
6133 delta_type_node. Double alignment wastes a word on the Sparc. */
6134 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6135 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6139 /* Make this part of an invisible union. */
6140 fields
[5] = copy_node (fields
[4]);
6141 TREE_TYPE (fields
[5]) = delta_type_node
;
6142 DECL_NAME (fields
[5]) = vt_off_identifier
;
6143 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6144 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6145 TREE_UNSIGNED (fields
[5]) = 0;
6146 TREE_CHAIN (fields
[4]) = fields
[5];
6148 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6149 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6152 std_node
= build_decl (NAMESPACE_DECL
,
6153 get_identifier (flag_honor_std
? "fake std":"std"),
6155 pushdecl (std_node
);
6157 global_type_node
= make_node (LANG_TYPE
);
6158 record_unknown_type (global_type_node
, "global type");
6161 current_lang_name
= lang_name_cplusplus
;
6164 tree bad_alloc_type_node
, newtype
, deltype
;
6166 push_namespace (get_identifier ("std"));
6167 bad_alloc_type_node
= xref_tag
6168 (class_type_node
, get_identifier ("bad_alloc"), NULL_TREE
, 1);
6171 newtype
= build_exception_variant
6172 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6173 deltype
= build_exception_variant
6174 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6175 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6176 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6177 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6178 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6182 = define_function ("__pure_virtual", void_ftype
,
6183 NOT_BUILT_IN
, 0, 0);
6185 /* Perform other language dependent initializations. */
6186 init_class_processing ();
6187 init_init_processing ();
6188 init_search_processing ();
6190 init_rtti_processing ();
6192 if (flag_exceptions
)
6193 init_exception_processing ();
6196 flag_inline_functions
= 0;
6199 if (! supports_one_only ())
6202 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6203 declare_function_name ();
6205 /* Prepare to check format strings against argument lists. */
6206 init_function_format_info ();
6208 /* Show we use EH for cleanups. */
6209 using_eh_for_cleanups ();
6211 print_error_function
= lang_print_error_function
;
6212 lang_get_alias_set
= &c_get_alias_set
;
6214 /* Maintain consistency. Perhaps we should just complain if they
6215 say -fwritable-strings? */
6216 if (flag_writable_strings
)
6217 flag_const_strings
= 0;
6220 /* Function to print any language-specific context for an error message. */
6223 lang_print_error_function (file
)
6226 default_print_error_function (file
);
6227 maybe_print_template_context ();
6230 /* Make a definition for a builtin function named NAME and whose data type
6231 is TYPE. TYPE should be a function type with argument types.
6232 FUNCTION_CODE tells later passes how to compile calls to this function.
6233 See tree.h for its possible values.
6235 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6236 the name to be called if we can't opencode the function. */
6239 define_function (name
, type
, function_code
, pfn
, library_name
)
6242 enum built_in_function function_code
;
6243 void (*pfn
) PROTO((tree
));
6246 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6247 DECL_EXTERNAL (decl
) = 1;
6248 TREE_PUBLIC (decl
) = 1;
6249 DECL_ARTIFICIAL (decl
) = 1;
6251 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6252 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6254 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6255 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6256 function in the namespace. */
6257 if (pfn
) (*pfn
) (decl
);
6259 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6260 make_function_rtl (decl
);
6261 if (function_code
!= NOT_BUILT_IN
)
6263 DECL_BUILT_IN (decl
) = 1;
6264 DECL_FUNCTION_CODE (decl
) = function_code
;
6269 /* Called when a declaration is seen that contains no names to declare.
6270 If its type is a reference to a structure, union or enum inherited
6271 from a containing scope, shadow that tag name for the current scope
6272 with a forward reference.
6273 If its type defines a new named structure or union
6274 or defines an enum, it is valid but we need not do anything here.
6275 Otherwise, it is an error.
6277 C++: may have to grok the declspecs to learn about static,
6278 complain for anonymous unions. */
6281 shadow_tag (declspecs
)
6285 tree ob_modifier
= NULL_TREE
;
6287 register enum tree_code code
, ok_code
= ERROR_MARK
;
6288 register tree t
= NULL_TREE
;
6290 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6292 register tree value
= TREE_VALUE (link
);
6294 code
= TREE_CODE (value
);
6295 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6297 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6299 maybe_process_partial_specialization (value
);
6305 else if (value
== ridpointers
[(int) RID_STATIC
]
6306 || value
== ridpointers
[(int) RID_EXTERN
]
6307 || value
== ridpointers
[(int) RID_AUTO
]
6308 || value
== ridpointers
[(int) RID_REGISTER
]
6309 || value
== ridpointers
[(int) RID_INLINE
]
6310 || value
== ridpointers
[(int) RID_VIRTUAL
]
6311 || value
== ridpointers
[(int) RID_EXPLICIT
])
6312 ob_modifier
= value
;
6315 /* This is where the variables in an anonymous union are
6316 declared. An anonymous union declaration looks like:
6318 because there is no declarator after the union, the parser
6319 sends that declaration here. */
6320 if (ok_code
== UNION_TYPE
6322 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6323 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6324 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6325 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6327 /* See also grok_x_components. */
6330 /* Wipe out memory of synthesized methods */
6331 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6332 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6333 TYPE_HAS_INIT_REF (t
) = 0;
6334 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6335 TYPE_HAS_ASSIGN_REF (t
) = 0;
6336 TYPE_HAS_ASSIGNMENT (t
) = 0;
6337 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6339 q
= &TYPE_METHODS (t
);
6342 if (DECL_ARTIFICIAL (*q
))
6343 *q
= TREE_CHAIN (*q
);
6345 q
= &TREE_CHAIN (*q
);
6348 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6349 function members. */
6350 if (TYPE_METHODS (t
))
6351 error ("an anonymous union cannot have function members");
6353 if (TYPE_FIELDS (t
))
6355 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6357 finish_anon_union (decl
);
6362 /* Anonymous unions are objects, that's why we only check for
6363 inappropriate specifiers in this branch. */
6367 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6368 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6369 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6370 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6371 cp_error ("`%D' can only be specified for constructors",
6374 cp_error ("`%D' can only be specified for objects and functions",
6379 cp_error ("abstract declarator used as declaration");
6380 else if (found_tag
> 1)
6381 pedwarn ("multiple types in one declaration");
6385 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6388 groktypename (typename
)
6391 if (TREE_CODE (typename
) != TREE_LIST
)
6393 return grokdeclarator (TREE_VALUE (typename
),
6394 TREE_PURPOSE (typename
),
6395 TYPENAME
, 0, NULL_TREE
);
6398 /* Decode a declarator in an ordinary declaration or data definition.
6399 This is called as soon as the type information and variable name
6400 have been parsed, before parsing the initializer if any.
6401 Here we create the ..._DECL node, fill in its type,
6402 and put it on the list of decls for the current context.
6403 The ..._DECL node is returned as the value.
6405 Exception: for arrays where the length is not specified,
6406 the type is left null, to be filled in by `cp_finish_decl'.
6408 Function definitions do not come here; they go to start_function
6409 instead. However, external and forward declarations of functions
6410 do go through here. Structure field declarations are done by
6411 grokfield and not through here. */
6413 /* Set this to zero to debug not using the temporary obstack
6414 to parse initializers. */
6415 int debug_temp_inits
= 1;
6418 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6419 tree declarator
, declspecs
;
6421 tree attributes
, prefix_attributes
;
6424 register tree type
, tem
;
6426 extern int have_extern_spec
;
6427 extern int used_extern_spec
;
6430 /* See code below that used this. */
6431 int init_written
= initialized
;
6434 /* This should only be done once on the top most decl. */
6435 if (have_extern_spec
&& !used_extern_spec
)
6437 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6439 used_extern_spec
= 1;
6442 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6444 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6447 type
= TREE_TYPE (decl
);
6449 /* Don't lose if destructors must be executed at file-level. */
6450 if (! processing_template_decl
&& TREE_STATIC (decl
)
6451 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6452 && !TREE_PERMANENT (decl
))
6454 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6455 decl
= copy_node (decl
);
6456 if (TREE_CODE (type
) == ARRAY_TYPE
)
6458 tree itype
= TYPE_DOMAIN (type
);
6459 if (itype
&& ! TREE_PERMANENT (itype
))
6461 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6462 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6463 TREE_TYPE (decl
) = type
;
6470 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6471 ? DECL_CLASS_CONTEXT (decl
)
6472 : DECL_CONTEXT (decl
);
6474 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6475 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6477 /* When parsing the initializer, lookup should use the object's
6479 push_decl_namespace (context
);
6482 /* We are only interested in class contexts, later. */
6483 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6484 context
= NULL_TREE
;
6487 /* Is it valid for this decl to have an initializer at all?
6488 If not, set INITIALIZED to zero, which will indirectly
6489 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6490 switch (TREE_CODE (decl
))
6493 /* typedef foo = bar means give foo the same type as bar.
6494 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6495 Any other case of an initialization in a TYPE_DECL is an error. */
6496 if (pedantic
|| list_length (declspecs
) > 1)
6498 cp_error ("typedef `%D' is initialized", decl
);
6504 cp_error ("function `%#D' is initialized like a variable", decl
);
6509 if (! processing_template_decl
)
6511 if (type
!= error_mark_node
)
6513 if (TYPE_SIZE (type
) != NULL_TREE
6514 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6517 ("variable-sized object `%D' may not be initialized",
6522 if (TREE_CODE (type
) == ARRAY_TYPE
6523 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6526 ("elements of array `%#D' have incomplete type", decl
);
6535 if (! toplevel_bindings_p ()
6536 && DECL_EXTERNAL (decl
))
6537 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6539 DECL_EXTERNAL (decl
) = 0;
6540 if (toplevel_bindings_p ())
6541 TREE_STATIC (decl
) = 1;
6543 /* Tell `pushdecl' this is an initialized decl
6544 even though we don't yet have the initializer expression.
6545 Also tell `cp_finish_decl' it may store the real initializer. */
6546 DECL_INITIAL (decl
) = error_mark_node
;
6549 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6551 if (TREE_CODE (decl
) == VAR_DECL
)
6553 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6554 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6555 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6558 if (DECL_CONTEXT (field
) != context
)
6560 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6561 DECL_CONTEXT (field
), DECL_NAME (decl
),
6562 context
, DECL_NAME (decl
));
6563 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6565 /* Static data member are tricky; an in-class initialization
6566 still doesn't provide a definition, so the in-class
6567 declaration will have DECL_EXTERNAL set, but will have an
6568 initialization. Thus, duplicate_decls won't warn
6569 about this situation, and so we check here. */
6570 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6571 cp_error ("duplicate initialization of %D", decl
);
6572 if (duplicate_decls (decl
, field
))
6578 tree field
= check_classfn (context
, decl
);
6579 if (field
&& duplicate_decls (decl
, field
))
6583 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6584 DECL_IN_AGGR_P (decl
) = 0;
6585 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6586 || CLASSTYPE_USE_TEMPLATE (context
))
6587 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6589 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6590 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6593 pushclass (context
, 2);
6596 /* Set attributes here so if duplicate decl, will have proper attributes. */
6597 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6599 /* Add this decl to the current binding level, but not if it
6600 comes from another scope, e.g. a static member variable.
6601 TEM may equal DECL or it may be a previous decl of the same name. */
6603 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6604 /* Definitions of namespace members outside their namespace are
6606 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6607 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6608 || TREE_CODE (type
) == LANG_TYPE
6609 /* The declaration of template specializations does not affect
6610 the functions available for overload resolution, so we do not
6612 || (TREE_CODE (decl
) == FUNCTION_DECL
6613 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6616 tem
= pushdecl (decl
);
6618 if (processing_template_decl
)
6620 if (! current_function_decl
)
6621 tem
= push_template_decl (tem
);
6622 else if (minimal_parse_mode
)
6624 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6625 copy_to_permanent (declspecs
),
6630 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6631 /* Tell the back-end to use or not use .common as appropriate. If we say
6632 -fconserve-space, we want this to save .data space, at the expense of
6633 wrong semantics. If we say -fno-conserve-space, we want this to
6634 produce errors about redefs; to do this we force variables into the
6636 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6639 if (! processing_template_decl
)
6642 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6643 push_obstacks_nochange ();
6646 /* We have no way of knowing whether the initializer will need to be
6647 evaluated at run-time or not until we've parsed it, so let's just put
6648 it in the permanent obstack. (jason) */
6650 && ! (TREE_CODE (tem
) == PARM_DECL
6651 || (TREE_READONLY (tem
)
6652 && (TREE_CODE (tem
) == VAR_DECL
6653 || TREE_CODE (tem
) == FIELD_DECL
))))
6655 /* When parsing and digesting the initializer,
6656 use temporary storage. Do this even if we will ignore the value. */
6657 if (toplevel_bindings_p () && debug_temp_inits
)
6659 if (processing_template_decl
6660 || TYPE_NEEDS_CONSTRUCTING (type
)
6661 || TREE_CODE (type
) == REFERENCE_TYPE
)
6662 /* In this case, the initializer must lay down in permanent
6663 storage, since it will be saved until `finish_file' is run. */
6666 temporary_allocation ();
6678 tree type
= TREE_TYPE (decl
);
6679 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6681 /* If this type of object needs a cleanup, and control may
6682 jump past it, make a new binding level so that it is cleaned
6683 up only when it is initialized first. */
6684 if (TYPE_NEEDS_DESTRUCTOR (type
)
6685 && current_binding_level
->more_cleanups_ok
== 0)
6686 pushlevel_temporary (1);
6689 /* Is it valid for this decl to have an initializer at all?
6690 If not, set INITIALIZED to zero, which will indirectly
6691 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6693 /* Don't allow initializations for incomplete types except for
6694 arrays which might be completed by the initialization. */
6695 if (type
== error_mark_node
)
6696 ; /* Don't complain again. */
6697 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6698 ; /* A complete type is ok. */
6699 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6701 cp_error ("variable `%#D' has initializer but incomplete type",
6704 type
= TREE_TYPE (decl
) = error_mark_node
;
6706 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6708 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6709 cp_error ("elements of array `%#D' have incomplete type", decl
);
6710 /* else we already gave an error in start_decl. */
6716 && TREE_CODE (decl
) != TYPE_DECL
6717 && TREE_CODE (decl
) != TEMPLATE_DECL
6718 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6720 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6721 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6723 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6725 /* Change the type so that assemble_variable will give
6726 DECL an rtl we can live with: (mem (const_int 0)). */
6727 type
= TREE_TYPE (decl
) = error_mark_node
;
6731 /* If any base type in the hierarchy of TYPE needs a constructor,
6732 then we set initialized to 1. This way any nodes which are
6733 created for the purposes of initializing this aggregate
6734 will live as long as it does. This is necessary for global
6735 aggregates which do not have their initializers processed until
6736 the end of the file. */
6737 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6742 /* We don't do this yet for GNU C++. */
6743 /* For a local variable, define the RTL now. */
6744 if (! toplevel_bindings_p ()
6745 /* But not if this is a duplicate decl
6746 and we preserved the rtl from the previous one
6747 (which may or may not happen). */
6748 && DECL_RTL (tem
) == NULL_RTX
)
6750 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6752 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6753 && DECL_INITIAL (tem
) != NULL_TREE
)
6759 DECL_INITIAL (decl
) = NULL_TREE
;
6762 /* Handle initialization of references.
6763 These three arguments are from `cp_finish_decl', and have the
6764 same meaning here that they do there.
6766 Quotes on semantics can be found in ARM 8.4.3. */
6769 grok_reference_init (decl
, type
, init
)
6770 tree decl
, type
, init
;
6774 if (init
== NULL_TREE
)
6776 if ((DECL_LANG_SPECIFIC (decl
) == 0
6777 || DECL_IN_AGGR_P (decl
) == 0)
6778 && ! DECL_THIS_EXTERN (decl
))
6780 cp_error ("`%D' declared as reference but not initialized", decl
);
6781 if (TREE_CODE (decl
) == VAR_DECL
)
6782 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6787 if (init
== error_mark_node
)
6790 if (TREE_CODE (type
) == REFERENCE_TYPE
6791 && TREE_CODE (init
) == CONSTRUCTOR
)
6793 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6797 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6798 /* decay_conversion is probably wrong for references to functions. */
6799 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6801 if (TREE_CODE (init
) == TREE_LIST
)
6802 init
= build_compound_expr (init
);
6804 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6805 init
= convert_from_reference (init
);
6807 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6808 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6810 /* Note: default conversion is only called in very special cases. */
6811 init
= default_conversion (init
);
6814 tmp
= convert_to_reference
6815 (type
, init
, CONV_IMPLICIT
,
6816 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6818 if (tmp
== error_mark_node
)
6820 else if (tmp
!= NULL_TREE
)
6823 DECL_INITIAL (decl
) = save_expr (init
);
6827 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6831 /* ?? Can this be optimized in some cases to
6832 hand back the DECL_INITIAL slot?? */
6833 if (TYPE_SIZE (TREE_TYPE (type
)))
6835 init
= convert_from_reference (decl
);
6836 if (TREE_PERMANENT (decl
))
6837 init
= copy_to_permanent (init
);
6838 SET_DECL_REFERENCE_SLOT (decl
, init
);
6841 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6843 expand_static_init (decl
, DECL_INITIAL (decl
));
6844 DECL_INITIAL (decl
) = NULL_TREE
;
6849 if (TREE_CODE (decl
) == VAR_DECL
)
6850 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6854 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6855 mucking with forces it does not comprehend (i.e. initialization with a
6856 constructor). If we are at global scope and won't go into COMMON, fill
6857 it in with a dummy CONSTRUCTOR to force the variable into .data;
6858 otherwise we can use error_mark_node. */
6861 obscure_complex_init (decl
, init
)
6864 if (! flag_no_inline
&& TREE_STATIC (decl
))
6866 if (extract_init (decl
, init
))
6870 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6871 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6872 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6876 DECL_INITIAL (decl
) = error_mark_node
;
6881 /* Finish processing of a declaration;
6882 install its line number and initial value.
6883 If the length of an array type is not known before,
6884 it must be determined now, from the initial value, or it is an error.
6886 Call `pop_obstacks' iff NEED_POP is nonzero.
6888 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6889 for aggregates that have constructors alive on the permanent obstack,
6890 so that the global initializing functions can be written at the end.
6892 INIT0 holds the value of an initializer that should be allowed to escape
6895 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6896 if the (init) syntax was used.
6898 For functions that take default parameters, DECL points to its
6899 "maximal" instantiation. `cp_finish_decl' must then also declared its
6900 subsequently lower and lower forms of instantiation, checking for
6901 ambiguity as it goes. This can be sped up later. */
6904 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6911 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
6913 int temporary
= allocation_temporary_p ();
6914 char *asmspec
= NULL
;
6915 int was_readonly
= 0;
6916 int already_used
= 0;
6918 /* If this is 0, then we did not change obstacks. */
6922 error ("assignment (not initialization) in declaration");
6926 /* If a name was specified, get the string. */
6928 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6930 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
6932 cp_error ("Cannot initialize `%D' to namespace `%D'",
6937 if (TREE_CODE (decl
) == VAR_DECL
6938 && DECL_CONTEXT (decl
)
6939 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
6940 && DECL_CONTEXT (decl
) != current_namespace
6943 /* Leave the namespace of the object. */
6944 pop_decl_namespace ();
6947 /* If the type of the thing we are declaring either has
6948 a constructor, or has a virtual function table pointer,
6949 AND its initialization was accepted by `start_decl',
6950 then we stayed on the permanent obstack through the
6951 declaration, otherwise, changed obstacks as GCC would. */
6953 type
= TREE_TYPE (decl
);
6955 if (type
== error_mark_node
)
6957 if (toplevel_bindings_p () && temporary
)
6958 end_temporary_allocation ();
6963 if (processing_template_decl
)
6965 if (init
&& DECL_INITIAL (decl
))
6966 DECL_INITIAL (decl
) = init
;
6967 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
6969 tree stmt
= DECL_VINDEX (decl
);
6970 /* If the decl is declaring a member of a local class (in a
6971 template function), the DECL_VINDEX will either be NULL,
6972 or it will be an actual virtual function index, not a
6974 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
6976 DECL_VINDEX (decl
) = NULL_TREE
;
6977 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
6984 /* Take care of TYPE_DECLs up front. */
6985 if (TREE_CODE (decl
) == TYPE_DECL
)
6987 if (init
&& DECL_INITIAL (decl
))
6989 /* typedef foo = bar; store the type of bar as the type of foo. */
6990 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
6991 DECL_INITIAL (decl
) = init
= NULL_TREE
;
6993 if (type
!= error_mark_node
6994 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
6996 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
6997 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
6998 set_identifier_type_value (DECL_NAME (decl
), type
);
6999 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7001 GNU_xref_decl (current_function_decl
, decl
);
7003 /* If we have installed this as the canonical typedef for this
7004 type, and that type has not been defined yet, delay emitting
7005 the debug information for it, as we will emit it later. */
7006 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7007 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7008 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7010 rest_of_decl_compilation (decl
, NULL_PTR
,
7011 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7014 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7016 ttype
= target_type (type
);
7019 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7020 && TYPE_NEEDS_CONSTRUCTING (type
))
7023 /* Currently, GNU C++ puts constants in text space, making them
7024 impossible to initialize. In the future, one would hope for
7025 an operating system which understood the difference between
7026 initialization and the running of a program. */
7028 TREE_READONLY (decl
) = 0;
7031 if (TREE_CODE (decl
) == FIELD_DECL
)
7033 if (init
&& init
!= error_mark_node
)
7034 my_friendly_assert (TREE_PERMANENT (init
), 147);
7038 /* This must override the asm specifier which was placed
7039 by grokclassfn. Lay this out fresh. */
7040 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7041 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7042 make_decl_rtl (decl
, asmspec
, 0);
7045 /* If `start_decl' didn't like having an initialization, ignore it now. */
7046 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7048 else if (DECL_EXTERNAL (decl
))
7050 else if (TREE_CODE (type
) == REFERENCE_TYPE
7051 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7053 if (TREE_STATIC (decl
))
7054 make_decl_rtl (decl
, NULL_PTR
,
7055 toplevel_bindings_p ()
7056 || pseudo_global_level_p ());
7057 grok_reference_init (decl
, type
, init
);
7061 GNU_xref_decl (current_function_decl
, decl
);
7063 if (TREE_CODE (decl
) == FIELD_DECL
)
7065 else if (TREE_CODE (decl
) == CONST_DECL
)
7067 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7069 DECL_INITIAL (decl
) = init
;
7071 /* This will keep us from needing to worry about our obstacks. */
7072 my_friendly_assert (init
!= NULL_TREE
, 149);
7077 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7079 if (TREE_CODE (type
) == ARRAY_TYPE
)
7080 init
= digest_init (type
, init
, (tree
*) 0);
7081 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7083 if (TYPE_NON_AGGREGATE_CLASS (type
))
7085 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7087 init
= error_mark_node
;
7090 goto dont_use_constructor
;
7095 dont_use_constructor
:
7096 if (TREE_CODE (init
) != TREE_VEC
)
7097 init
= store_init_value (decl
, init
);
7101 /* We must hide the initializer so that expand_decl
7102 won't try to do something it does not understand. */
7103 init
= obscure_complex_init (decl
, init
);
7105 else if (DECL_EXTERNAL (decl
))
7107 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7108 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7111 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7112 ctype
= TREE_TYPE (ctype
);
7113 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7115 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7116 cp_error ("structure `%D' with uninitialized const members", decl
);
7117 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7118 cp_error ("structure `%D' with uninitialized reference members",
7122 if (TREE_CODE (decl
) == VAR_DECL
7123 && !DECL_INITIAL (decl
)
7124 && !TYPE_NEEDS_CONSTRUCTING (type
)
7125 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7126 cp_error ("uninitialized const `%D'", decl
);
7128 if (TYPE_SIZE (type
) != NULL_TREE
7129 && TYPE_NEEDS_CONSTRUCTING (type
))
7130 init
= obscure_complex_init (decl
, NULL_TREE
);
7132 else if (TREE_CODE (decl
) == VAR_DECL
7133 && TREE_CODE (type
) != REFERENCE_TYPE
7134 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7136 /* ``Unless explicitly declared extern, a const object does not have
7137 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7138 However, if it's `const int foo = 1; const int foo;', don't complain
7139 about the second decl, since it does have an initializer before.
7140 We deliberately don't complain about arrays, because they're
7141 supposed to be initialized by a constructor. */
7142 if (! DECL_INITIAL (decl
)
7143 && TREE_CODE (type
) != ARRAY_TYPE
7144 && (!pedantic
|| !current_class_type
))
7145 cp_error ("uninitialized const `%#D'", decl
);
7148 /* For top-level declaration, the initial value was read in
7149 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7150 must go in the permanent obstack; but don't discard the
7151 temporary data yet. */
7153 if (toplevel_bindings_p () && temporary
)
7154 end_temporary_allocation ();
7156 /* Deduce size of array from initialization, if not already known. */
7158 if (TREE_CODE (type
) == ARRAY_TYPE
7159 && TYPE_DOMAIN (type
) == NULL_TREE
7160 && TREE_CODE (decl
) != TYPE_DECL
)
7163 = (TREE_STATIC (decl
)
7164 /* Even if pedantic, an external linkage array
7165 may have incomplete type at first. */
7166 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7167 : !DECL_EXTERNAL (decl
));
7168 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7169 int failure
= complete_array_type (type
, initializer
, do_default
);
7172 cp_error ("initializer fails to determine size of `%D'", decl
);
7177 cp_error ("array size missing in `%D'", decl
);
7178 /* If a `static' var's size isn't known, make it extern as
7179 well as static, so it does not get allocated. If it's not
7180 `static', then don't mark it extern; finish_incomplete_decl
7181 will give it a default size and it will get allocated. */
7182 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7183 DECL_EXTERNAL (decl
) = 1;
7186 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7187 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7189 cp_error ("zero-size array `%D'", decl
);
7191 layout_decl (decl
, 0);
7194 if (TREE_CODE (decl
) == VAR_DECL
)
7196 if (DECL_SIZE (decl
) == NULL_TREE
7197 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7198 layout_decl (decl
, 0);
7200 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7202 /* A static variable with an incomplete type:
7203 that is an error if it is initialized.
7204 Otherwise, let it through, but if it is not `extern'
7205 then it may cause an error message later. */
7206 if (DECL_INITIAL (decl
) != NULL_TREE
)
7207 cp_error ("storage size of `%D' isn't known", decl
);
7210 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7212 /* An automatic variable with an incomplete type: that is an error.
7213 Don't talk about array types here, since we took care of that
7214 message in grokdeclarator. */
7215 cp_error ("storage size of `%D' isn't known", decl
);
7216 TREE_TYPE (decl
) = error_mark_node
;
7218 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7219 /* Let debugger know it should output info for this type. */
7220 note_debug_info_needed (ttype
);
7222 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7223 note_debug_info_needed (DECL_CONTEXT (decl
));
7225 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7226 && DECL_SIZE (decl
) != NULL_TREE
7227 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7229 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7230 constant_expression_warning (DECL_SIZE (decl
));
7232 cp_error ("storage size of `%D' isn't constant", decl
);
7235 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7236 /* Cleanups for static variables are handled by `finish_file'. */
7237 && ! TREE_STATIC (decl
))
7239 int yes
= suspend_momentary ();
7240 cleanup
= maybe_build_cleanup (decl
);
7241 resume_momentary (yes
);
7244 /* PARM_DECLs get cleanups, too. */
7245 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7248 end_temporary_allocation ();
7249 cleanup
= maybe_build_cleanup (decl
);
7251 resume_temporary_allocation ();
7254 /* Output the assembler code and/or RTL code for variables and functions,
7255 unless the type is an undefined structure or union.
7256 If not, it will get done when the type is completed. */
7258 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7260 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7261 || TREE_CODE (decl
) == RESULT_DECL
)
7263 /* ??? FIXME: What about nested classes? */
7264 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7266 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7267 && allocation_temporary_p ());
7270 end_temporary_allocation ();
7272 /* Extern inline function static data has external linkage.
7273 Instead of trying to deal with that, we disable inlining of
7274 such functions. The ASM_WRITTEN check is to avoid hitting this
7275 for __FUNCTION__. */
7276 if (TREE_CODE (decl
) == VAR_DECL
7277 && TREE_STATIC (decl
)
7278 && ! TREE_ASM_WRITTEN (decl
)
7279 && current_function_decl
7280 && DECL_CONTEXT (decl
) == current_function_decl
7281 && DECL_THIS_INLINE (current_function_decl
)
7282 && TREE_PUBLIC (current_function_decl
))
7284 current_function_cannot_inline
7285 = "function with static variable cannot be inline";
7288 else if (TREE_CODE (decl
) == VAR_DECL
7289 && DECL_LANG_SPECIFIC (decl
)
7290 && DECL_COMDAT (decl
))
7292 /* Dynamically initialized vars go into common. */
7293 if (DECL_INITIAL (decl
) == NULL_TREE
7294 || DECL_INITIAL (decl
) == error_mark_node
)
7295 DECL_COMMON (decl
) = 1;
7296 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7298 DECL_COMMON (decl
) = 1;
7299 DECL_INITIAL (decl
) = error_mark_node
;
7303 /* Statically initialized vars are weak or comdat, if
7306 make_decl_one_only (decl
);
7309 /* We can't do anything useful; leave vars for explicit
7311 DECL_EXTERNAL (decl
) = 1;
7312 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7317 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7318 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7319 else if (TREE_CODE (decl
) == VAR_DECL
7320 && TREE_READONLY (decl
)
7321 && DECL_INITIAL (decl
) != NULL_TREE
7322 && DECL_INITIAL (decl
) != error_mark_node
7323 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7325 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7328 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7331 && TREE_STATIC (decl
)
7332 && ! TREE_SIDE_EFFECTS (decl
)
7333 && ! TREE_PUBLIC (decl
)
7334 && ! DECL_EXTERNAL (decl
)
7335 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7336 && DECL_MODE (decl
) != BLKmode
)
7338 /* If this variable is really a constant, then fill its DECL_RTL
7339 slot with something which won't take up storage.
7340 If something later should take its address, we can always give
7341 it legitimate RTL at that time. */
7342 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7343 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7344 TREE_ASM_WRITTEN (decl
) = 1;
7346 else if (toplev
&& ! TREE_PUBLIC (decl
))
7348 /* If this is a static const, change its apparent linkage
7349 if it belongs to a #pragma interface. */
7350 if (!interface_unknown
)
7352 TREE_PUBLIC (decl
) = 1;
7353 DECL_EXTERNAL (decl
) = interface_only
;
7355 make_decl_rtl (decl
, asmspec
, toplev
);
7358 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7360 else if (TREE_CODE (decl
) == VAR_DECL
7361 && DECL_LANG_SPECIFIC (decl
)
7362 && DECL_IN_AGGR_P (decl
))
7364 if (TREE_STATIC (decl
))
7366 if (init
== NULL_TREE
7367 #ifdef DEFAULT_STATIC_DEFS
7368 /* If this code is dead, then users must
7369 explicitly declare static member variables
7370 outside the class def'n as well. */
7371 && TYPE_NEEDS_CONSTRUCTING (type
)
7375 DECL_EXTERNAL (decl
) = 1;
7376 make_decl_rtl (decl
, asmspec
, 1);
7379 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7382 /* Just a constant field. Should not need any rtl. */
7386 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7389 resume_temporary_allocation ();
7391 if (type
!= error_mark_node
7392 && TYPE_LANG_SPECIFIC (type
)
7393 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7394 abstract_virtuals_error (decl
, type
);
7395 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7396 || TREE_CODE (type
) == METHOD_TYPE
)
7397 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7398 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7399 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7401 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7402 signature_error (decl
, type
);
7403 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7404 || TREE_CODE (type
) == METHOD_TYPE
)
7405 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7406 && IS_SIGNATURE (TREE_TYPE (type
)))
7407 signature_error (decl
, TREE_TYPE (type
));
7409 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7411 else if (DECL_EXTERNAL (decl
)
7412 && ! (DECL_LANG_SPECIFIC (decl
)
7413 && DECL_NOT_REALLY_EXTERN (decl
)))
7416 DECL_INITIAL (decl
) = init
;
7418 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7420 /* Cleanups for static variables are handled by `finish_file'. */
7421 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7422 || TYPE_NEEDS_DESTRUCTOR (type
))
7423 expand_static_init (decl
, init
);
7427 /* This is a declared decl which must live until the
7428 end of the binding contour. It may need a cleanup. */
7430 /* Recompute the RTL of a local array now
7431 if it used to be an incomplete type. */
7432 if (was_incomplete
&& ! TREE_STATIC (decl
))
7434 /* If we used it already as memory, it must stay in memory. */
7435 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7436 /* If it's still incomplete now, no init will save it. */
7437 if (DECL_SIZE (decl
) == NULL_TREE
)
7438 DECL_INITIAL (decl
) = NULL_TREE
;
7441 else if (! TREE_ASM_WRITTEN (decl
)
7442 && (TYPE_SIZE (type
) != NULL_TREE
7443 || TREE_CODE (type
) == ARRAY_TYPE
))
7445 /* Do this here, because we did not expand this decl's
7446 rtl in start_decl. */
7447 if (DECL_RTL (decl
) == NULL_RTX
)
7451 /* XXX: Why don't we use decl here? */
7452 /* Ans: Because it was already expanded? */
7453 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7454 cp_error ("parser lost in parsing declaration of `%D'",
7456 /* Cleanup used up here. */
7457 cleanup
= NULL_TREE
;
7461 if (current_binding_level
->is_for_scope
)
7463 struct binding_level
*outer
= current_binding_level
->level_chain
;
7465 /* Check to see if the same name is already bound at
7466 the outer level, either because it was directly declared,
7467 or because a dead for-decl got preserved. In either case,
7468 the code would not have been valid under the ARM
7469 scope rules, so clear is_for_scope for the
7470 current_binding_level.
7472 Otherwise, we need to preserve the temp slot for decl
7473 to last into the outer binding level. */
7475 int handling_dead_for_vars
= 0;
7476 tree link
= outer
->names
;
7477 for (; ; link
= TREE_CHAIN (link
))
7479 if (link
== NULL
&& handling_dead_for_vars
== 0)
7481 link
= outer
->dead_vars_from_for
;
7482 handling_dead_for_vars
= 1;
7486 if (DECL_IN_MEMORY_P (decl
))
7487 preserve_temp_slots (DECL_RTL (decl
));
7490 if (DECL_NAME (link
) == DECL_NAME (decl
))
7492 if (handling_dead_for_vars
)
7495 = purpose_member (DECL_NAME (decl
),
7496 current_binding_level
->shadowed
);
7497 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7498 TREE_VALUE (shadowing
)
7499 = DECL_SHADOWED_FOR_VAR (link
);
7501 current_binding_level
->is_for_scope
= 0;
7507 expand_start_target_temps ();
7509 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7511 /* Compute and store the initial value. */
7512 expand_decl_init (decl
);
7513 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7515 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7517 emit_line_note (DECL_SOURCE_FILE (decl
),
7518 DECL_SOURCE_LINE (decl
));
7519 expand_aggr_init (decl
, init
, 0, flags
);
7522 /* Set this to 0 so we can tell whether an aggregate which
7523 was initialized was ever used. Don't do this if it has a
7524 destructor, so we don't complain about the 'resource
7525 allocation is initialization' idiom. */
7526 /* Now set attribute((unused)) on types so decls of
7527 that type will be marked used. (see TREE_USED, above.)
7528 This avoids the warning problems this particular code
7529 tried to work around. */
7531 if (TYPE_NEEDS_CONSTRUCTING (type
)
7533 && cleanup
== NULL_TREE
7534 && DECL_NAME (decl
))
7535 TREE_USED (decl
) = 0;
7538 TREE_USED (decl
) = 1;
7541 /* Cleanup any temporaries needed for the initial value. */
7542 expand_end_target_temps ();
7544 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7546 /* Store the cleanup, if there was one. */
7549 if (! expand_decl_cleanup (decl
, cleanup
))
7550 cp_error ("parser lost in parsing declaration of `%D'",
7557 /* Undo call to `pushclass' that was done in `start_decl'
7558 due to initialization of qualified member variable.
7559 I.e., Foo::x = 10; */
7561 tree context
= DECL_REAL_CONTEXT (decl
);
7563 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7564 && (TREE_CODE (decl
) == VAR_DECL
7565 /* We also have a pushclass done that we need to undo here
7566 if we're at top level and declare a method. */
7567 || TREE_CODE (decl
) == FUNCTION_DECL
)
7568 /* If size hasn't been set, we're still defining it,
7569 and therefore inside the class body; don't pop
7570 the binding level.. */
7571 && TYPE_SIZE (context
) != NULL_TREE
7572 && context
== current_class_type
)
7579 /* If requested, warn about definitions of large data objects. */
7581 if (warn_larger_than
7582 && ! processing_template_decl
7583 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7584 && !DECL_EXTERNAL (decl
))
7586 register tree decl_size
= DECL_SIZE (decl
);
7588 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7590 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7592 if (units
> larger_than_size
)
7593 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7599 /* Resume permanent allocation, if not within a function. */
7600 /* The corresponding push_obstacks_nochange is in start_decl,
7601 start_method, groktypename, and in grokfield. */
7606 TREE_READONLY (decl
) = 1;
7609 /* This is here for a midend callback from c-common.c */
7612 finish_decl (decl
, init
, asmspec_tree
)
7616 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7620 expand_static_init (decl
, init
)
7624 tree oldstatic
= value_member (decl
, static_aggregates
);
7628 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7629 cp_error ("multiple initializations given for `%D'", decl
);
7631 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7633 /* Emit code to perform this initialization but once. */
7636 /* Remember this information until end of file. */
7637 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7639 /* Emit code to perform this initialization but once. */
7640 temp
= get_temp_name (integer_type_node
, 1);
7641 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7642 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7643 integer_zero_node
, 1), 0);
7644 expand_start_target_temps ();
7646 expand_assignment (temp
, integer_one_node
, 0, 0);
7647 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7648 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7650 expand_aggr_init (decl
, init
, 0, 0);
7651 do_pending_stack_adjust ();
7654 expand_assignment (decl
, init
, 0, 0);
7656 /* Cleanup any temporaries needed for the initial value. */
7657 expand_end_target_temps ();
7659 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7661 tree cleanup
, fcall
;
7662 static tree Atexit
= 0;
7665 tree atexit_fndecl
, PFV
, pfvlist
;
7666 /* Remember this information until end of file. */
7667 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7668 PFV
= build_pointer_type (build_function_type
7669 (void_type_node
, void_list_node
));
7671 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7673 push_lang_context (lang_name_c
);
7675 = builtin_function ("atexit",
7676 build_function_type (void_type_node
,
7678 NOT_BUILT_IN
, NULL_PTR
);
7679 assemble_external (atexit_fndecl
);
7680 Atexit
= default_conversion (atexit_fndecl
);
7681 pop_lang_context ();
7685 cleanup
= start_anon_func ();
7686 expand_expr_stmt (build_cleanup (decl
));
7688 mark_addressable (cleanup
);
7689 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7690 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7691 expand_expr_stmt (fcall
);
7695 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7697 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7698 TREE_STATIC (static_aggregates
) = 1;
7701 /* Resume old (possibly temporary) allocation. */
7706 /* This code takes into account memory allocation
7707 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7708 does not hold for this object, then we must make permanent
7709 the storage currently in the temporary obstack. */
7710 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7711 preserve_initializer ();
7712 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7716 /* Make TYPE a complete type based on INITIAL_VALUE.
7717 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7718 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7721 complete_array_type (type
, initial_value
, do_default
)
7722 tree type
, initial_value
;
7725 register tree maxindex
= NULL_TREE
;
7730 /* Note MAXINDEX is really the maximum index,
7731 one less than the size. */
7732 if (TREE_CODE (initial_value
) == STRING_CST
)
7735 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7736 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7739 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7741 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7742 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7743 for (; elts
; elts
= TREE_CHAIN (elts
))
7745 if (TREE_PURPOSE (elts
))
7746 maxindex
= TREE_PURPOSE (elts
);
7748 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7750 maxindex
= copy_node (maxindex
);
7754 /* Make an error message unless that happened already. */
7755 if (initial_value
!= error_mark_node
)
7758 /* Prevent further error messages. */
7759 maxindex
= build_int_2 (0, 0);
7766 maxindex
= build_int_2 (0, 0);
7774 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7775 if (! TREE_TYPE (maxindex
))
7776 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7778 itype
= TREE_TYPE (initial_value
);
7781 if (itype
&& !TYPE_DOMAIN (itype
))
7782 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7783 /* The type of the main variant should never be used for arrays
7784 of different sizes. It should only ever be completed with the
7785 size of the array. */
7786 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7787 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7790 /* Lay out the type now that we can get the real answer. */
7797 /* Return zero if something is declared to be a member of type
7798 CTYPE when in the context of CUR_TYPE. STRING is the error
7799 message to print in that case. Otherwise, quietly return 1. */
7802 member_function_or_else (ctype
, cur_type
, string
)
7803 tree ctype
, cur_type
;
7806 if (ctype
&& ctype
!= cur_type
)
7808 error (string
, TYPE_NAME_STRING (ctype
));
7814 /* Subroutine of `grokdeclarator'. */
7816 /* Generate errors possibly applicable for a given set of specifiers.
7817 This is for ARM $7.1.2. */
7820 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7823 int virtualp
, quals
, friendp
, raises
, inlinep
;
7826 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7828 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7830 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7833 cp_error_at ("invalid friend declaration", object
);
7835 cp_error_at ("invalid exception specifications", object
);
7838 /* CTYPE is class type, or null if non-class.
7839 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7841 DECLARATOR is the function's name.
7842 VIRTUALP is truthvalue of whether the function is virtual or not.
7843 FLAGS are to be passed through to `grokclassfn'.
7844 QUALS are qualifiers indicating whether the function is `const'
7846 RAISES is a list of exceptions that this function can raise.
7847 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7848 not look, and -1 if we should not call `grokclassfn' at all. */
7851 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7852 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7853 template_count
, in_namespace
)
7856 tree orig_declarator
;
7858 enum overload_flags flags
;
7859 tree quals
, raises
, attrlist
;
7860 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7864 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7868 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7869 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7875 type
= build_exception_variant (type
, raises
);
7878 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7879 /* Propagate volatile out from type to decl. */
7880 if (TYPE_VOLATILE (type
))
7881 TREE_THIS_VOLATILE (decl
) = 1;
7883 /* This decl is not from the current namespace. */
7885 set_decl_namespace (decl
, in_namespace
);
7887 /* Should probably propagate const out from type to decl I bet (mrs). */
7890 DECL_STATIC_FUNCTION_P (decl
) = 1;
7891 DECL_CONTEXT (decl
) = ctype
;
7895 DECL_CLASS_CONTEXT (decl
) = ctype
;
7897 if (ctype
== NULL_TREE
&& MAIN_NAME_P (declarator
))
7900 error ("cannot declare `main' to be inline");
7902 error ("cannot declare `main' to be static");
7907 /* Members of anonymous types have no linkage; make them internal. */
7908 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
7913 /* [basic.link]: A name with no linkage (notably, the name of a class
7914 or enumeration declared in a local scope) shall not be used to
7915 declare an entity with linkage.
7917 Only check this for public decls for now. */
7918 t
= no_linkage_check (TREE_TYPE (decl
));
7921 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
7922 cp_pedwarn ("non-local function `%#D' uses anonymous type", decl
);
7924 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
7929 TREE_PUBLIC (decl
) = publicp
;
7932 DECL_INTERFACE_KNOWN (decl
) = 1;
7933 DECL_NOT_REALLY_EXTERN (decl
) = 1;
7937 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7939 DECL_EXTERNAL (decl
) = 1;
7940 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7942 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7943 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7947 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7948 grok_op_properties (decl
, virtualp
, check
< 0);
7950 if (ctype
&& hack_decl_function_context (decl
))
7951 DECL_NO_STATIC_CHAIN (decl
) = 1;
7953 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
7954 if (TREE_PURPOSE (t
)
7955 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
7957 add_defarg_fn (decl
);
7962 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
7966 ("defining explicit specialization `%D' in friend declaration",
7970 /* A friend declaration of the form friend void f<>(). Record
7971 the information in the TEMPLATE_ID_EXPR. */
7972 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
7973 DECL_TEMPLATE_INFO (decl
)
7974 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
7975 TREE_OPERAND (orig_declarator
, 1),
7980 /* Caller will do the rest of this. */
7984 if (check
&& funcdef_flag
)
7985 DECL_INITIAL (decl
) = error_mark_node
;
7987 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
7990 /* Just handle constructors here. We could do this
7991 inside the following if stmt, but I think
7992 that the code is more legible by breaking this
7993 case out. See comments below for what each of
7994 the following calls is supposed to do. */
7995 DECL_CONSTRUCTOR_P (decl
) = 1;
7997 grokclassfn (ctype
, declarator
, decl
, flags
, quals
);
7999 decl
= check_explicit_specialization (orig_declarator
, decl
,
8001 2 * (funcdef_flag
!= 0) +
8002 4 * (friendp
!= 0));
8004 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (ctype
, decl
))
8007 tmp
= check_classfn (ctype
, decl
);
8009 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8010 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8012 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8013 cp_error ("definition of implicitly-declared `%D'", tmp
);
8014 if (tmp
&& duplicate_decls (decl
, tmp
))
8017 if (! grok_ctor_properties (ctype
, decl
))
8020 if (check
== 0 && ! current_function_decl
)
8022 /* Assembler names live in the global namespace. */
8023 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
8024 if (tmp
== NULL_TREE
)
8025 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8026 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8027 cp_error ("inconsistent declarations for `%D'", decl
);
8030 duplicate_decls (decl
, tmp
);
8033 make_decl_rtl (decl
, NULL_PTR
, 1);
8040 /* Function gets the ugly name, field gets the nice one.
8041 This call may change the type of the function (because
8042 of default parameters)! */
8043 if (ctype
!= NULL_TREE
)
8044 grokclassfn (ctype
, cname
, decl
, flags
, quals
);
8046 decl
= check_explicit_specialization (orig_declarator
, decl
,
8048 2 * (funcdef_flag
!= 0) +
8049 4 * (friendp
!= 0));
8050 if (ctype
!= NULL_TREE
8051 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (ctype
, decl
))
8054 tmp
= check_classfn (ctype
, decl
);
8056 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8057 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8059 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8060 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8062 /* Remove the `this' parm added by grokclassfn.
8063 XXX Isn't this done in start_function, too? */
8064 revert_static_member_fn (&decl
, NULL
, NULL
);
8065 last_function_parms
= TREE_CHAIN (last_function_parms
);
8067 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8068 cp_error ("definition of implicitly-declared `%D'", tmp
);
8071 if (!duplicate_decls (decl
, tmp
))
8072 my_friendly_abort (892);
8077 if (ctype
== NULL_TREE
|| check
)
8080 /* Now install the declaration of this function so that others may
8081 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8083 if (! current_function_decl
)
8085 if (!DECL_TEMPLATE_SPECIALIZATION (decl
))
8087 /* We don't do this for specializations since the
8088 equivalent checks will be done later. Also, at this
8089 point the DECL_ASSEMBLER_NAME is not yet fully
8092 /* FIXME: this should only need to look at
8093 IDENTIFIER_GLOBAL_VALUE. */
8094 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
8095 if (tmp
== NULL_TREE
)
8096 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8097 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8098 cp_error ("inconsistent declarations for `%D'", decl
);
8101 duplicate_decls (decl
, tmp
);
8107 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8108 TREE_VALUE (attrlist
));
8109 make_decl_rtl (decl
, NULL_PTR
, 1);
8113 DECL_VIRTUAL_P (decl
) = 1;
8114 if (DECL_VINDEX (decl
) == NULL_TREE
)
8115 DECL_VINDEX (decl
) = error_mark_node
;
8116 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8123 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8126 RID_BIT_TYPE
*specbits_in
;
8132 RID_BIT_TYPE specbits
;
8134 specbits
= *specbits_in
;
8136 if (TREE_CODE (type
) == OFFSET_TYPE
)
8138 /* If you declare a static member so that it
8139 can be initialized, the code will reach here. */
8140 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8141 type
= TREE_TYPE (type
);
8142 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8143 DECL_CONTEXT (decl
) = basetype
;
8144 DECL_CLASS_CONTEXT (decl
) = basetype
;
8145 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8149 tree context
= in_namespace
? in_namespace
: current_namespace
;
8150 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8151 if (context
!= global_namespace
&& namespace_bindings_p ()
8152 && current_lang_name
!= lang_name_c
)
8153 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8158 set_decl_namespace (decl
, in_namespace
);
8160 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8162 DECL_THIS_EXTERN (decl
) = 1;
8163 DECL_EXTERNAL (decl
) = !initialized
;
8166 /* In class context, static means one per class,
8167 public access, and static storage. */
8168 if (DECL_CLASS_SCOPE_P (decl
))
8170 TREE_PUBLIC (decl
) = 1;
8171 TREE_STATIC (decl
) = 1;
8172 DECL_EXTERNAL (decl
) = 0;
8174 /* At top level, either `static' or no s.c. makes a definition
8175 (perhaps tentative), and absence of `static' makes it public. */
8176 else if (toplevel_bindings_p ())
8178 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8179 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8180 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8182 /* Not at top level, only `static' makes a static definition. */
8185 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8186 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8189 if (TREE_PUBLIC (decl
))
8191 /* [basic.link]: A name with no linkage (notably, the name of a class
8192 or enumeration declared in a local scope) shall not be used to
8193 declare an entity with linkage.
8195 Only check this for public decls for now. */
8196 tree t
= no_linkage_check (TREE_TYPE (decl
));
8199 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8200 /* Ignore for now; `enum { foo } e' is pretty common. */;
8202 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8210 /* Create a canonical pointer to member function type. */
8213 build_ptrmemfunc_type (type
)
8220 /* If a canonical type already exists for this type, use it. We use
8221 this method instead of type_hash_canon, because it only does a
8222 simple equality check on the list of field members. */
8224 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8227 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8229 u
= make_lang_type (UNION_TYPE
);
8230 IS_AGGR_TYPE (u
) = 0;
8231 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8232 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8234 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8235 TYPE_NAME (u
) = NULL_TREE
;
8237 t
= make_lang_type (RECORD_TYPE
);
8239 /* Let the front-end know this is a pointer to member function... */
8240 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8241 /* ... and not really an aggregate. */
8242 IS_AGGR_TYPE (t
) = 0;
8244 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8246 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8248 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8249 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8253 /* Zap out the name so that the back-end will give us the debugging
8254 information for this anonymous RECORD_TYPE. */
8255 TYPE_NAME (t
) = NULL_TREE
;
8257 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8259 /* Seems to be wanted. */
8260 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8264 /* Given declspecs and a declarator,
8265 determine the name and type of the object declared
8266 and construct a ..._DECL node for it.
8267 (In one case we can return a ..._TYPE node instead.
8268 For invalid input we sometimes return 0.)
8270 DECLSPECS is a chain of tree_list nodes whose value fields
8271 are the storage classes and type specifiers.
8273 DECL_CONTEXT says which syntactic context this declaration is in:
8274 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8275 FUNCDEF for a function definition. Like NORMAL but a few different
8276 error messages in each case. Return value may be zero meaning
8277 this definition is too screwy to try to parse.
8278 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8279 handle member functions (which have FIELD context).
8280 Return value may be zero meaning this definition is too screwy to
8282 PARM for a parameter declaration (either within a function prototype
8283 or before a function body). Make a PARM_DECL, or return void_type_node.
8284 CATCHPARM for a parameter declaration before a catch clause.
8285 TYPENAME if for a typename (in a cast or sizeof).
8286 Don't make a DECL node; just return the ..._TYPE node.
8287 FIELD for a struct or union field; make a FIELD_DECL.
8288 BITFIELD for a field with specified width.
8289 INITIALIZED is 1 if the decl has an initializer.
8291 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8292 It may also be so in the PARM case, for a prototype where the
8293 argument type is specified but not the name.
8295 This function is where the complicated C meanings of `static'
8296 and `extern' are interpreted.
8298 For C++, if there is any monkey business to do, the function which
8299 calls this one must do it, i.e., prepending instance variables,
8300 renaming overloaded function names, etc.
8302 Note that for this C++, it is an error to define a method within a class
8303 which does not belong to that class.
8305 Except in the case where SCOPE_REFs are implicitly known (such as
8306 methods within a class being redundantly qualified),
8307 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8308 (class_name::decl_name). The caller must also deal with this.
8310 If a constructor or destructor is seen, and the context is FIELD,
8311 then the type gains the attribute TREE_HAS_x. If such a declaration
8312 is erroneous, NULL_TREE is returned.
8314 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8315 function, these are the qualifiers to give to the `this' pointer.
8317 May return void_type_node if the declarator turned out to be a friend.
8318 See grokfield for details. */
8320 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8323 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8326 enum decl_context decl_context
;
8330 RID_BIT_TYPE specbits
;
8333 tree type
= NULL_TREE
;
8337 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8338 int explicit_int
= 0;
8339 int explicit_char
= 0;
8340 int defaulted_int
= 0;
8341 int opaque_typedef
= 0;
8342 tree typedef_decl
= NULL_TREE
;
8344 tree typedef_type
= NULL_TREE
;
8345 int funcdef_flag
= 0;
8346 enum tree_code innermost_code
= ERROR_MARK
;
8349 /* See the code below that used this. */
8350 tree decl_machine_attr
= NULL_TREE
;
8352 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8353 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8354 tree init
= NULL_TREE
;
8356 /* Keep track of what sort of function is being processed
8357 so that we can warn about default return values, or explicit
8358 return values which do not match prescribed defaults. */
8359 enum return_types return_type
= return_normal
;
8361 tree dname
= NULL_TREE
;
8362 tree ctype
= current_class_type
;
8363 tree ctor_return_type
= NULL_TREE
;
8364 enum overload_flags flags
= NO_SPECIAL
;
8365 tree quals
= NULL_TREE
;
8366 tree raises
= NULL_TREE
;
8367 int template_count
= 0;
8368 tree in_namespace
= NULL_TREE
;
8370 RIDBIT_RESET_ALL (specbits
);
8371 if (decl_context
== FUNCDEF
)
8372 funcdef_flag
= 1, decl_context
= NORMAL
;
8373 else if (decl_context
== MEMFUNCDEF
)
8374 funcdef_flag
= -1, decl_context
= FIELD
;
8375 else if (decl_context
== BITFIELD
)
8376 bitfield
= 1, decl_context
= FIELD
;
8378 /* Look inside a declarator for the name being declared
8379 and get it as a string, for an error message. */
8381 tree
*next
= &declarator
;
8385 while (next
&& *next
)
8388 switch (TREE_CODE (decl
))
8392 next
= &TREE_OPERAND (decl
, 0);
8395 case BIT_NOT_EXPR
: /* For C++ destructors! */
8397 tree name
= TREE_OPERAND (decl
, 0);
8398 tree rename
= NULL_TREE
;
8400 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8402 return_type
= return_dtor
;
8403 if (TREE_CODE (name
) == TYPE_DECL
)
8404 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8405 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8406 if (ctype
== NULL_TREE
)
8408 if (current_class_type
== NULL_TREE
)
8410 error ("destructors must be member functions");
8415 tree t
= constructor_name (current_class_name
);
8422 tree t
= constructor_name (ctype
);
8429 cp_error ("destructor `%T' must match class name `%T'",
8431 TREE_OPERAND (decl
, 0) = rename
;
8437 case ADDR_EXPR
: /* C++ reference declaration */
8442 innermost_code
= TREE_CODE (decl
);
8443 next
= &TREE_OPERAND (decl
, 0);
8447 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8449 /* This is actually a variable declaration using constructor
8450 syntax. We need to call start_decl and cp_finish_decl so we
8451 can get the variable initialized... */
8453 *next
= TREE_OPERAND (decl
, 0);
8454 init
= TREE_OPERAND (decl
, 1);
8456 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8457 /* Look for __unused__ attribute */
8458 if (TREE_USED (TREE_TYPE (decl
)))
8459 TREE_USED (decl
) = 1;
8460 finish_decl (decl
, init
, NULL_TREE
);
8463 innermost_code
= TREE_CODE (decl
);
8464 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8465 ctype
= current_class_type
;
8467 && TREE_OPERAND (decl
, 0)
8468 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8469 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8470 == constructor_name_full (ctype
))
8471 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8472 == constructor_name (ctype
)))))
8473 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8474 next
= &TREE_OPERAND (decl
, 0);
8476 if (ctype
!= NULL_TREE
8477 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8478 && decl
== constructor_name (ctype
))
8480 return_type
= return_ctor
;
8481 ctor_return_type
= ctype
;
8486 case TEMPLATE_ID_EXPR
:
8488 tree fns
= TREE_OPERAND (decl
, 0);
8490 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8491 fns
= TREE_OPERAND (fns
, 0);
8493 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8495 else if (is_overloaded_fn (fns
))
8496 dname
= DECL_NAME (get_first_fn (fns
));
8498 my_friendly_abort (0);
8502 case IDENTIFIER_NODE
:
8503 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8510 cp_error ("declarator-id missing; using reserved word `%D'",
8512 name
= IDENTIFIER_POINTER (dname
);
8514 if (! IDENTIFIER_OPNAME_P (dname
)
8515 /* GNU/Linux headers use '__op'. Arrgh. */
8516 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8517 name
= IDENTIFIER_POINTER (dname
);
8520 if (IDENTIFIER_TYPENAME_P (dname
))
8522 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8523 flags
= TYPENAME_FLAG
;
8524 ctor_return_type
= TREE_TYPE (dname
);
8525 return_type
= return_conversion
;
8527 name
= operator_name_string (dname
);
8534 /* Perform error checking, and decide on a ctype. */
8535 tree cname
= TREE_OPERAND (decl
, 0);
8536 if (cname
== NULL_TREE
)
8538 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8541 in_namespace
= TREE_OPERAND (decl
, 0);
8542 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8544 else if (! is_aggr_type (cname
, 1))
8545 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8546 /* Must test TREE_OPERAND (decl, 1), in case user gives
8547 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8548 else if (TREE_OPERAND (decl
, 1)
8549 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8551 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8552 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8554 cp_error ("`%T::%D' is not a valid declarator", cname
,
8555 TREE_OPERAND (decl
, 1));
8556 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8557 cname
, TREE_OPERAND (decl
, 1));
8558 return void_type_node
;
8560 else if (ctype
== NULL_TREE
)
8562 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8563 TREE_OPERAND (decl
, 0) = ctype
;
8566 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8568 cp_error ("type `%T' is not derived from type `%T'",
8570 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8576 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8577 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8578 == constructor_name_full (ctype
))
8579 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8580 == constructor_name (ctype
))))
8581 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8582 next
= &TREE_OPERAND (decl
, 1);
8586 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8587 && constructor_name (ctype
) == decl
)
8589 return_type
= return_ctor
;
8590 ctor_return_type
= ctype
;
8592 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8593 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8594 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8595 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8597 return_type
= return_dtor
;
8598 ctor_return_type
= ctype
;
8600 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8601 next
= &TREE_OPERAND (decl
, 0);
8612 /* Parse error puts this typespec where
8613 a declarator should go. */
8614 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8615 if (TREE_TYPE (decl
) == current_class_type
)
8616 cp_error (" perhaps you want `%T' for a constructor",
8617 current_class_name
);
8618 dname
= DECL_NAME (decl
);
8619 name
= IDENTIFIER_POINTER (dname
);
8621 /* Avoid giving two errors for this. */
8622 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8624 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8631 cp_compiler_error ("`%D' as declarator", decl
);
8632 return 0; /* We used to do a 155 abort here. */
8639 /* A function definition's declarator must have the form of
8640 a function declarator. */
8642 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8645 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8646 && innermost_code
!= CALL_EXPR
8647 && ! (ctype
&& declspecs
== NULL_TREE
))
8649 cp_error ("declaration of `%D' as non-function", dname
);
8650 return void_type_node
;
8653 /* Anything declared one level down from the top level
8654 must be one of the parameters of a function
8655 (because the body is at least two levels down). */
8657 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8658 by not allowing C++ class definitions to specify their parameters
8659 with xdecls (must be spec.d in the parmlist).
8661 Since we now wait to push a class scope until we are sure that
8662 we are in a legitimate method context, we must set oldcname
8663 explicitly (since current_class_name is not yet alive).
8665 We also want to avoid calling this a PARM if it is in a namespace. */
8667 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8668 && ! pseudo_global_level_p ())
8670 struct binding_level
*b
= current_binding_level
;
8671 current_binding_level
= b
->level_chain
;
8672 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8673 decl_context
= PARM
;
8674 current_binding_level
= b
;
8677 /* Look through the decl specs and record which ones appear.
8678 Some typespecs are defined as built-in typenames.
8679 Others, the ones that are modifiers of other types,
8680 are represented by bits in SPECBITS: set the bits for
8681 the modifiers that appear. Storage class keywords are also in SPECBITS.
8683 If there is a typedef name or a type, store the type in TYPE.
8684 This includes builtin typedefs such as `int'.
8686 Set EXPLICIT_INT if the type is `int' or `char' and did not
8687 come from a user typedef.
8689 Set LONGLONG if `long' is mentioned twice.
8691 For C++, constructors and destructors have their own fast treatment. */
8693 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8698 /* Certain parse errors slip through. For example,
8699 `int class;' is not caught by the parser. Try
8700 weakly to recover here. */
8701 if (TREE_CODE (spec
) != TREE_LIST
)
8704 id
= TREE_VALUE (spec
);
8706 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8708 if (id
== ridpointers
[(int) RID_INT
]
8709 || id
== ridpointers
[(int) RID_CHAR
]
8710 || id
== ridpointers
[(int) RID_BOOL
]
8711 || id
== ridpointers
[(int) RID_WCHAR
])
8715 if (id
== ridpointers
[(int) RID_BOOL
])
8716 error ("`bool' is now a keyword");
8718 cp_error ("extraneous `%T' ignored", id
);
8722 if (id
== ridpointers
[(int) RID_INT
])
8724 else if (id
== ridpointers
[(int) RID_CHAR
])
8726 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8730 /* C++ aggregate types. */
8731 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8734 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8736 type
= IDENTIFIER_TYPE_VALUE (id
);
8740 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8742 if (ridpointers
[i
] == id
)
8744 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8746 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8747 pedwarn ("ANSI C++ does not support `long long'");
8749 error ("`long long long' is too long for GCC");
8753 else if (RIDBIT_SETP (i
, specbits
))
8754 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8755 RIDBIT_SET (i
, specbits
);
8760 /* C++ aggregate types. */
8761 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8764 cp_error ("multiple declarations `%T' and `%T'", type
,
8768 type
= TREE_TYPE (id
);
8769 TREE_VALUE (spec
) = type
;
8774 error ("two or more data types in declaration of `%s'", name
);
8775 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8777 register tree t
= lookup_name (id
, 1);
8778 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8779 error ("`%s' fails to be a typedef or built in type",
8780 IDENTIFIER_POINTER (id
));
8783 type
= TREE_TYPE (t
);
8785 /* See the code below that used this. */
8786 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8791 else if (id
!= error_mark_node
)
8792 /* Can't change CLASS nodes into RECORD nodes here! */
8798 typedef_type
= type
;
8800 /* No type at all: default to `int', and set DEFAULTED_INT
8801 because it was not a user-defined typedef.
8802 Except when we have a `typedef' inside a signature, in
8803 which case the type defaults to `unknown type' and is
8804 instantiated when assigning to a signature pointer or ref. */
8806 if (type
== NULL_TREE
8807 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8808 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8809 || RIDBIT_SETP (RID_LONG
, specbits
)
8810 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8812 /* These imply 'int'. */
8813 type
= integer_type_node
;
8817 if (type
== NULL_TREE
)
8820 if (return_type
== return_dtor
)
8821 type
= void_type_node
;
8822 else if (return_type
== return_ctor
)
8823 type
= build_pointer_type (ctor_return_type
);
8824 else if (return_type
== return_conversion
)
8825 type
= ctor_return_type
;
8826 else if (current_class_type
8827 && IS_SIGNATURE (current_class_type
)
8828 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8829 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8833 type
= copy_node (opaque_type_node
);
8839 if (warn_return_type
8840 && return_type
== return_normal
)
8841 /* Save warning until we know what is really going on. */
8842 warn_about_return_type
= 1;
8844 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8845 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8846 else if (innermost_code
!= CALL_EXPR
|| pedantic
8847 || (warn_return_type
&& return_type
== return_normal
))
8849 if (innermost_code
== CALL_EXPR
)
8850 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
8852 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8855 type
= integer_type_node
;
8858 else if (return_type
== return_dtor
)
8860 error ("return type specification for destructor invalid");
8861 type
= void_type_node
;
8863 else if (return_type
== return_ctor
)
8865 error ("return type specification for constructor invalid");
8866 type
= build_pointer_type (ctor_return_type
);
8868 else if (return_type
== return_conversion
)
8870 if (comptypes (type
, ctor_return_type
, 1) == 0)
8871 cp_error ("operator `%T' declared to return `%T'",
8872 ctor_return_type
, type
);
8874 cp_pedwarn ("return type specified for `operator %T'",
8877 type
= ctor_return_type
;
8882 /* Now process the modifiers that were specified
8883 and check for invalid combinations. */
8885 /* Long double is a special combination. */
8887 if (RIDBIT_SETP (RID_LONG
, specbits
)
8888 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
8890 RIDBIT_RESET (RID_LONG
, specbits
);
8891 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
8892 TYPE_VOLATILE (type
));
8895 /* Check all other uses of type modifiers. */
8897 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8898 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8899 || RIDBIT_SETP (RID_LONG
, specbits
)
8900 || RIDBIT_SETP (RID_SHORT
, specbits
))
8904 if (TREE_CODE (type
) == REAL_TYPE
)
8905 error ("short, signed or unsigned invalid for `%s'", name
);
8906 else if (TREE_CODE (type
) != INTEGER_TYPE
)
8907 error ("long, short, signed or unsigned invalid for `%s'", name
);
8908 else if (RIDBIT_SETP (RID_LONG
, specbits
)
8909 && RIDBIT_SETP (RID_SHORT
, specbits
))
8910 error ("long and short specified together for `%s'", name
);
8911 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8912 || RIDBIT_SETP (RID_SHORT
, specbits
))
8914 error ("long or short specified with char for `%s'", name
);
8915 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8916 || RIDBIT_SETP (RID_SHORT
, specbits
))
8917 && TREE_CODE (type
) == REAL_TYPE
)
8918 error ("long or short specified with floating type for `%s'", name
);
8919 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8920 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
8921 error ("signed and unsigned given together for `%s'", name
);
8925 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
8927 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8929 if (flag_pedantic_errors
)
8934 /* Discard the type modifiers if they are invalid. */
8937 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
8938 RIDBIT_RESET (RID_SIGNED
, specbits
);
8939 RIDBIT_RESET (RID_LONG
, specbits
);
8940 RIDBIT_RESET (RID_SHORT
, specbits
);
8945 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
8946 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
8948 error ("complex invalid for `%s'", name
);
8949 RIDBIT_RESET (RID_COMPLEX
, specbits
);
8952 /* Decide whether an integer type is signed or not.
8953 Optionally treat bitfields as signed by default. */
8954 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8955 || (bitfield
&& ! flag_signed_bitfields
8956 && (explicit_int
|| defaulted_int
|| explicit_char
8957 /* A typedef for plain `int' without `signed'
8958 can be controlled just like plain `int'. */
8959 || ! (typedef_decl
!= NULL_TREE
8960 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
8961 && TREE_CODE (type
) != ENUMERAL_TYPE
8962 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
8965 type
= long_long_unsigned_type_node
;
8966 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8967 type
= long_unsigned_type_node
;
8968 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8969 type
= short_unsigned_type_node
;
8970 else if (type
== char_type_node
)
8971 type
= unsigned_char_type_node
;
8972 else if (typedef_decl
)
8973 type
= unsigned_type (type
);
8975 type
= unsigned_type_node
;
8977 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8978 && type
== char_type_node
)
8979 type
= signed_char_type_node
;
8981 type
= long_long_integer_type_node
;
8982 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8983 type
= long_integer_type_node
;
8984 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8985 type
= short_integer_type_node
;
8987 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
8989 /* If we just have "complex", it is equivalent to
8990 "complex double", but if any modifiers at all are specified it is
8991 the complex form of TYPE. E.g, "complex short" is
8992 "complex short int". */
8994 if (defaulted_int
&& ! longlong
8995 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
8996 || RIDBIT_SETP (RID_SHORT
, specbits
)
8997 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8998 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
8999 type
= complex_double_type_node
;
9000 else if (type
== integer_type_node
)
9001 type
= complex_integer_type_node
;
9002 else if (type
== float_type_node
)
9003 type
= complex_float_type_node
;
9004 else if (type
== double_type_node
)
9005 type
= complex_double_type_node
;
9006 else if (type
== long_double_type_node
)
9007 type
= complex_long_double_type_node
;
9009 type
= build_complex_type (type
);
9012 if (return_type
== return_conversion
9013 && (RIDBIT_SETP (RID_CONST
, specbits
)
9014 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9015 cp_error ("`operator %T' cannot be cv-qualified",
9018 /* Set CONSTP if this declaration is `const', whether by
9019 explicit specification or via a typedef.
9020 Likewise for VOLATILEP. */
9022 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9023 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9024 type
= build_type_variant (type
, 0, 0);
9026 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9027 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9028 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9029 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9030 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9032 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9033 staticp
= 1 + (decl_context
== FIELD
);
9035 if (virtualp
&& staticp
== 2)
9037 cp_error ("member `%D' cannot be declared both virtual and static",
9041 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9042 RIDBIT_RESET (RID_FRIEND
, specbits
);
9044 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9046 if (decl_context
== PARM
)
9048 error ("non-member `%s' cannot be declared `mutable'", name
);
9049 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9051 else if (friendp
|| decl_context
== TYPENAME
)
9053 error ("non-object member `%s' cannot be declared `mutable'", name
);
9054 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9058 /* Warn if two storage classes are given. Default to `auto'. */
9060 if (RIDBIT_ANY_SET (specbits
))
9062 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9063 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9064 if (decl_context
== PARM
&& nclasses
> 0)
9065 error ("storage class specifiers invalid in parameter declarations");
9066 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9068 if (decl_context
== PARM
)
9069 error ("typedef declaration invalid in parameter declaration");
9072 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9073 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9076 /* Give error if `virtual' is used outside of class declaration. */
9078 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9080 error ("virtual outside class declaration");
9083 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9085 error ("only members can be declared mutable");
9086 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9089 /* Static anonymous unions are dealt with here. */
9090 if (staticp
&& decl_context
== TYPENAME
9091 && TREE_CODE (declspecs
) == TREE_LIST
9092 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9093 decl_context
= FIELD
;
9095 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9096 is used in a signature member function declaration. */
9097 if (decl_context
== FIELD
9098 && IS_SIGNATURE (current_class_type
)
9099 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9103 error ("`const' specified for signature member function `%s'", name
);
9108 error ("`volatile' specified for signature member function `%s'",
9114 error ("`inline' specified for signature member function `%s'", name
);
9115 /* Later, we'll make signature member functions inline. */
9120 error ("`friend' declaration in signature definition");
9125 error ("`virtual' specified for signature member function `%s'",
9127 /* Later, we'll make signature member functions virtual. */
9132 /* Warn about storage classes that are invalid for certain
9133 kinds of declarations (parameters, typenames, etc.). */
9136 error ("multiple storage classes in declaration of `%s'", name
);
9137 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9139 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9140 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9141 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9143 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9145 else if (decl_context
== FIELD
9146 && ! IS_SIGNATURE (current_class_type
)
9147 /* C++ allows static class elements */
9148 && RIDBIT_SETP (RID_STATIC
, specbits
))
9149 /* C++ also allows inlines and signed and unsigned elements,
9150 but in those cases we don't come in here. */
9154 if (decl_context
== FIELD
)
9156 tree tmp
= NULL_TREE
;
9157 register int op
= 0;
9161 /* Avoid trying to get an operand off an identifier node. */
9162 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9165 tmp
= TREE_OPERAND (declarator
, 0);
9166 op
= IDENTIFIER_OPNAME_P (tmp
);
9168 error ("storage class specified for %s `%s'",
9169 IS_SIGNATURE (current_class_type
)
9171 ? "signature member operator"
9172 : "signature member function")
9173 : (op
? "member operator" : "field"),
9174 op
? operator_name_string (tmp
) : name
);
9177 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9178 ? "storage class specified for parameter `%s'"
9179 : "storage class specified for typename"), name
);
9180 RIDBIT_RESET (RID_REGISTER
, specbits
);
9181 RIDBIT_RESET (RID_AUTO
, specbits
);
9182 RIDBIT_RESET (RID_EXTERN
, specbits
);
9184 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9186 RIDBIT_RESET (RID_STATIC
, specbits
);
9191 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9193 if (toplevel_bindings_p ())
9195 /* It's common practice (and completely valid) to have a const
9196 be initialized and declared extern. */
9198 warning ("`%s' initialized and declared `extern'", name
);
9201 error ("`%s' has both `extern' and initializer", name
);
9203 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9204 && ! toplevel_bindings_p ())
9205 error ("nested function `%s' declared `extern'", name
);
9206 else if (toplevel_bindings_p ())
9208 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9209 error ("top-level declaration of `%s' specifies `auto'", name
);
9212 if (nclasses
> 0 && friendp
)
9213 error ("storage class specifiers invalid in friend function declarations");
9215 /* Now figure out the structure of the declarator proper.
9216 Descend through it, creating more complex types, until we reach
9217 the declared identifier (or NULL_TREE, in an absolute declarator). */
9219 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9220 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9222 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9223 an INDIRECT_REF (for *...),
9224 a CALL_EXPR (for ...(...)),
9225 an identifier (for the name being declared)
9226 or a null pointer (for the place in an absolute declarator
9227 where the name was omitted).
9228 For the last two cases, we have just exited the loop.
9230 For C++ it could also be
9231 a SCOPE_REF (for class :: ...). In this case, we have converted
9232 sensible names to types, and those are the values we use to
9233 qualify the member name.
9234 an ADDR_EXPR (for &...),
9235 a BIT_NOT_EXPR (for destructors)
9237 At this point, TYPE is the type of elements of an array,
9238 or for a function to return, or for a pointer to point to.
9239 After this sequence of ifs, TYPE is the type of the
9240 array or function or pointer, and DECLARATOR has had its
9241 outermost layer removed. */
9243 if (type
== error_mark_node
)
9245 if (TREE_CODE (declarator
) == SCOPE_REF
)
9246 declarator
= TREE_OPERAND (declarator
, 1);
9248 declarator
= TREE_OPERAND (declarator
, 0);
9251 if (quals
!= NULL_TREE
9252 && (declarator
== NULL_TREE
9253 || TREE_CODE (declarator
) != SCOPE_REF
))
9255 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9256 ctype
= TYPE_METHOD_BASETYPE (type
);
9257 if (ctype
!= NULL_TREE
)
9259 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9260 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9261 type
= TREE_TYPE (dummy
);
9265 switch (TREE_CODE (declarator
))
9269 register tree itype
= NULL_TREE
;
9270 register tree size
= TREE_OPERAND (declarator
, 1);
9271 /* The index is a signed object `sizetype' bits wide. */
9272 tree index_type
= signed_type (sizetype
);
9274 declarator
= TREE_OPERAND (declarator
, 0);
9276 /* Check for some types that there cannot be arrays of. */
9278 if (TREE_CODE (type
) == VOID_TYPE
)
9280 cp_error ("declaration of `%D' as array of voids", dname
);
9281 type
= error_mark_node
;
9284 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9286 cp_error ("declaration of `%D' as array of functions", dname
);
9287 type
= error_mark_node
;
9290 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9291 you can't have arrays of references. If we allowed them,
9292 then we'd be saying x[i] is valid for an array x, but
9293 then you'd have to ask: what does `*(x + i)' mean? */
9294 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9296 if (decl_context
== TYPENAME
)
9297 cp_error ("cannot make arrays of references");
9299 cp_error ("declaration of `%D' as array of references",
9301 type
= error_mark_node
;
9304 if (TREE_CODE (type
) == OFFSET_TYPE
)
9306 cp_error ("declaration of `%D' as array of data members",
9308 type
= error_mark_node
;
9311 if (TREE_CODE (type
) == METHOD_TYPE
)
9313 cp_error ("declaration of `%D' as array of function members",
9315 type
= error_mark_node
;
9318 if (size
== error_mark_node
)
9319 type
= error_mark_node
;
9321 if (type
== error_mark_node
)
9326 /* Must suspend_momentary here because the index
9327 type may need to live until the end of the function.
9328 For example, it is used in the declaration of a
9329 variable which requires destructing at the end of
9330 the function; then build_vec_delete will need this
9332 int yes
= suspend_momentary ();
9333 /* Might be a cast. */
9334 if (TREE_CODE (size
) == NOP_EXPR
9335 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9336 size
= TREE_OPERAND (size
, 0);
9338 /* If this involves a template parameter, it'll be
9339 constant, but we don't know what the value is yet. */
9340 if (processing_template_decl
)
9342 itype
= make_node (INTEGER_TYPE
);
9343 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9344 TYPE_MAX_VALUE (itype
) = build_min
9345 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9346 goto dont_grok_size
;
9349 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9350 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9352 cp_error ("size of array `%D' has non-integer type",
9354 size
= integer_one_node
;
9356 if (TREE_READONLY_DECL_P (size
))
9357 size
= decl_constant_value (size
);
9358 if (pedantic
&& integer_zerop (size
))
9359 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9360 if (TREE_CONSTANT (size
))
9362 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9363 int old_pedantic
= pedantic
;
9364 pedantic
= flag_pedantic_errors
= 1;
9365 /* Always give overflow errors on array subscripts. */
9366 constant_expression_warning (size
);
9367 pedantic
= old_pedantic
;
9368 flag_pedantic_errors
= old_flag_pedantic_errors
;
9369 if (INT_CST_LT (size
, integer_zero_node
))
9371 cp_error ("size of array `%D' is negative", dname
);
9372 size
= integer_one_node
;
9380 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9383 cp_pedwarn ("ANSI C++ forbids variable-size array");
9388 = fold (build_binary_op (MINUS_EXPR
,
9389 cp_convert (index_type
, size
),
9390 cp_convert (index_type
,
9391 integer_one_node
), 1));
9392 if (! TREE_CONSTANT (itype
))
9393 itype
= variable_size (itype
);
9394 else if (TREE_OVERFLOW (itype
))
9396 error ("overflow in array dimension");
9397 TREE_OVERFLOW (itype
) = 0;
9400 /* If we're a parm, we need to have a permanent type so
9401 mangling checks for re-use will work right. If both the
9402 element and index types are permanent, the array type
9404 if (decl_context
== PARM
9405 && allocation_temporary_p () && TREE_PERMANENT (type
))
9407 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9408 itype
= build_index_type (itype
);
9412 itype
= build_index_type (itype
);
9415 resume_momentary (yes
);
9418 /* Build the array type itself, then merge any constancy or
9419 volatility into the target type. We must do it in this order
9420 to ensure that the TYPE_MAIN_VARIANT field of the array type
9421 is set correctly. */
9423 type
= build_cplus_array_type (type
, itype
);
9424 if (constp
|| volatilep
)
9425 type
= cp_build_type_variant (type
, constp
, volatilep
);
9435 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9436 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9438 /* Declaring a function type.
9439 Make sure we have a valid type for the function to return. */
9441 /* Is this an error? Should they be merged into TYPE here? */
9442 if (pedantic
&& (constp
|| volatilep
))
9443 pedwarn ("function declared to return const or volatile result");
9445 /* Merge any constancy or volatility into the function return
9448 if (constp
|| volatilep
)
9450 type
= cp_build_type_variant (type
, constp
, volatilep
);
9451 if (IS_AGGR_TYPE (type
))
9452 build_pointer_type (type
);
9458 /* Warn about some types functions can't return. */
9460 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9462 error ("`%s' declared as function returning a function", name
);
9463 type
= integer_type_node
;
9465 if (TREE_CODE (type
) == ARRAY_TYPE
)
9467 error ("`%s' declared as function returning an array", name
);
9468 type
= integer_type_node
;
9471 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9472 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9474 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9477 /* Pick up type qualifiers which should be applied to `this'. */
9478 quals
= TREE_OPERAND (declarator
, 2);
9480 /* Pick up the exception specifications. */
9481 raises
= TREE_TYPE (declarator
);
9483 /* Say it's a definition only for the CALL_EXPR
9484 closest to the identifier. */
9487 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9488 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9489 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9491 if (ctype
== NULL_TREE
9492 && decl_context
== FIELD
9494 && (friendp
== 0 || dname
== current_class_name
))
9495 ctype
= current_class_type
;
9497 if (ctype
&& return_type
== return_conversion
)
9498 TYPE_HAS_CONVERSION (ctype
) = 1;
9499 if (ctype
&& constructor_name (ctype
) == dname
)
9501 /* We are within a class's scope. If our declarator name
9502 is the same as the class name, and we are defining
9503 a function, then it is a constructor/destructor, and
9504 therefore returns a void type. */
9506 if (flags
== DTOR_FLAG
)
9508 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9509 not be declared const or volatile. A destructor
9510 may not be static. */
9512 error ("destructor cannot be static member function");
9515 error ("destructors cannot be declared `const' or `volatile'");
9516 return void_type_node
;
9518 if (decl_context
== FIELD
)
9520 if (! member_function_or_else (ctype
, current_class_type
,
9521 "destructor for alien class `%s' cannot be a member"))
9522 return void_type_node
;
9525 else /* It's a constructor. */
9529 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9530 not be declared const or volatile. A constructor may
9531 not be virtual. A constructor may not be static. */
9533 error ("constructor cannot be static member function");
9536 pedwarn ("constructors cannot be declared virtual");
9541 error ("constructors cannot be declared `const' or `volatile'");
9542 return void_type_node
;
9545 RID_BIT_TYPE tmp_bits
;
9546 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9547 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9548 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9549 if (RIDBIT_ANY_SET (tmp_bits
))
9550 error ("return value type specifier for constructor ignored");
9552 type
= build_pointer_type (ctype
);
9553 if (decl_context
== FIELD
9554 && IS_SIGNATURE (current_class_type
))
9556 error ("constructor not allowed in signature");
9557 return void_type_node
;
9559 else if (decl_context
== FIELD
)
9561 if (! member_function_or_else (ctype
, current_class_type
,
9562 "constructor for alien class `%s' cannot be member"))
9563 return void_type_node
;
9564 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9565 if (return_type
!= return_ctor
)
9569 if (decl_context
== FIELD
)
9575 error ("can't initialize friend function `%s'", name
);
9578 /* Cannot be both friend and virtual. */
9579 error ("virtual functions cannot be friends");
9580 RIDBIT_RESET (RID_FRIEND
, specbits
);
9583 if (decl_context
== NORMAL
)
9584 error ("friend declaration not in class definition");
9585 if (current_function_decl
&& funcdef_flag
)
9586 cp_error ("can't define friend function `%s' in a local class definition",
9590 /* Construct the function type and go to the next
9591 inner layer of declarator. */
9593 declarator
= TREE_OPERAND (declarator
, 0);
9595 /* FIXME: This is where default args should be fully
9598 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9602 /* Get past destructors, etc.
9603 We know we have one because FLAGS will be non-zero.
9605 Complain about improper parameter lists here. */
9606 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9608 declarator
= TREE_OPERAND (declarator
, 0);
9610 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9611 arg_types
= void_list_node
;
9612 else if (arg_types
== NULL_TREE
9613 || arg_types
!= void_list_node
)
9615 error ("destructors cannot be specified with parameters");
9616 arg_types
= void_list_node
;
9621 /* ANSI says that `const int foo ();'
9622 does not make the function foo const. */
9623 type
= build_function_type (type
, arg_types
);
9627 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9628 if (TREE_PURPOSE (t
)
9629 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9631 add_defarg_fn (type
);
9640 /* Filter out pointers-to-references and references-to-references.
9641 We can get these if a TYPE_DECL is used. */
9643 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9645 error ("cannot declare %s to references",
9646 TREE_CODE (declarator
) == ADDR_EXPR
9647 ? "references" : "pointers");
9648 declarator
= TREE_OPERAND (declarator
, 0);
9652 if (TREE_CODE (type
) == OFFSET_TYPE
9653 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9654 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9656 cp_error ("cannot declare pointer to `%#T' member",
9658 type
= TREE_TYPE (type
);
9661 /* Merge any constancy or volatility into the target type
9664 if (constp
|| volatilep
)
9666 /* A const or volatile signature pointer/reference is
9667 pointing to a const or volatile object, i.e., the
9668 `optr' is const or volatile, respectively, not the
9669 signature pointer/reference itself. */
9670 if (! IS_SIGNATURE (type
))
9672 type
= cp_build_type_variant (type
, constp
, volatilep
);
9673 if (IS_AGGR_TYPE (type
))
9674 build_pointer_type (type
);
9680 if (IS_SIGNATURE (type
))
9682 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9684 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9685 && TYPE_SIZE (type
))
9686 cp_warning ("empty signature `%T' used in signature reference declaration",
9689 type
= build_signature_reference_type (type
,
9692 sorry ("signature reference");
9698 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9699 && TYPE_SIZE (type
))
9700 cp_warning ("empty signature `%T' used in signature pointer declaration",
9702 type
= build_signature_pointer_type (type
,
9708 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9710 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9712 error ("cannot declare references to functions; use pointer to function instead");
9713 type
= build_pointer_type (type
);
9717 if (TREE_CODE (type
) == VOID_TYPE
)
9718 error ("invalid type: `void &'");
9720 type
= build_reference_type (type
);
9723 else if (TREE_CODE (type
) == METHOD_TYPE
)
9725 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9728 type
= build_pointer_type (type
);
9730 /* Process a list of type modifier keywords (such as
9731 const or volatile) that were given inside the `*' or `&'. */
9733 if (TREE_TYPE (declarator
))
9735 register tree typemodlist
;
9737 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9738 typemodlist
= TREE_CHAIN (typemodlist
))
9740 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9742 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9747 error ("invalid type modifier within %s declarator",
9748 TREE_CODE (declarator
) == ADDR_EXPR
9749 ? "reference" : "pointer");
9753 pedwarn ("duplicate `const'");
9755 pedwarn ("duplicate `volatile'");
9756 if (TREE_CODE (declarator
) == ADDR_EXPR
9757 && (constp
|| volatilep
))
9760 pedwarn ("discarding `const' applied to a reference");
9762 pedwarn ("discarding `volatile' applied to a reference");
9763 constp
= volatilep
= 0;
9766 declarator
= TREE_OPERAND (declarator
, 0);
9772 /* We have converted type names to NULL_TREE if the
9773 name was bogus, or to a _TYPE node, if not.
9775 The variable CTYPE holds the type we will ultimately
9776 resolve to. The code here just needs to build
9777 up appropriate member types. */
9778 tree sname
= TREE_OPERAND (declarator
, 1);
9781 /* Destructors can have their visibilities changed as well. */
9782 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9783 sname
= TREE_OPERAND (sname
, 0);
9785 if (TREE_COMPLEXITY (declarator
) == 0)
9786 /* This needs to be here, in case we are called
9787 multiple times. */ ;
9788 else if (TREE_COMPLEXITY (declarator
) == -1)
9789 /* Namespace member. */
9790 pop_decl_namespace ();
9791 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9792 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9793 else if (! IS_AGGR_TYPE_CODE
9794 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9796 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9798 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9799 that refer to ctype. They couldn't be resolved earlier
9800 because we hadn't pushed into the class yet.
9801 Example: resolve 'B<T>::type' in
9802 'B<typename B<T>::type> B<T>::f () { }'. */
9803 if (current_template_parms
9804 && uses_template_parms (type
)
9805 && uses_template_parms (current_class_type
))
9807 tree args
= current_template_args ();
9808 type
= tsubst (type
, args
, NULL_TREE
);
9811 /* This pop_nested_class corresponds to the
9812 push_nested_class used to push into class scope for
9813 parsing the argument list of a function decl, in
9815 pop_nested_class (1);
9816 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9819 my_friendly_abort (16);
9821 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9823 /* We had a reference to a global decl, or
9824 perhaps we were given a non-aggregate typedef,
9825 in which case we cleared this out, and should just
9826 keep going as though it wasn't there. */
9830 ctype
= TREE_OPERAND (declarator
, 0);
9833 while (t
!= NULL_TREE
)
9835 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9836 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9837 template_count
+= 1;
9838 t
= TYPE_MAIN_DECL (t
);
9839 if (DECL_LANG_SPECIFIC (t
))
9840 t
= DECL_CLASS_CONTEXT (t
);
9845 if (sname
== NULL_TREE
)
9848 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9850 /* This is the `standard' use of the scoping operator:
9851 basetype :: member . */
9853 if (ctype
== current_class_type
)
9859 Is this ill-formed? */
9862 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9865 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9867 if (current_class_type
== NULL_TREE
9869 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9870 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9873 cp_error ("cannot declare member function `%T::%s' within `%T'",
9874 ctype
, name
, current_class_type
);
9875 return void_type_node
;
9878 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9879 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9881 /* Have to move this code elsewhere in this function.
9882 this code is used for i.e., typedef int A::M; M *pm;
9884 It is? How? jason 10/2/94 */
9886 if (current_class_type
)
9888 cp_error ("cannot declare member `%T::%s' within `%T'",
9889 ctype
, name
, current_class_type
);
9890 return void_type_node
;
9892 type
= build_offset_type (ctype
, type
);
9894 else if (uses_template_parms (ctype
))
9896 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9898 = build_cplus_method_type (build_type_variant (ctype
,
9902 TYPE_ARG_TYPES (type
));
9906 cp_error ("structure `%T' not yet defined", ctype
);
9907 return error_mark_node
;
9912 else if (TREE_CODE (sname
) == SCOPE_REF
)
9913 my_friendly_abort (17);
9917 declarator
= TREE_OPERAND (declarator
, 1);
9918 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9919 /* In this case, we will deal with it later. */
9923 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9924 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9926 type
= build_offset_type (ctype
, type
);
9933 declarator
= TREE_OPERAND (declarator
, 0);
9939 declarator
= NULL_TREE
;
9943 declarator
= NULL_TREE
;
9947 my_friendly_abort (158);
9953 error ("only constructors can be declared `explicit'");
9957 /* Now TYPE has the actual type. */
9959 /* If this is declaring a typedef name, return a TYPE_DECL. */
9961 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9965 error ("const `%s' cannot be declared `mutable'", name
);
9966 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9970 error ("static `%s' cannot be declared `mutable'", name
);
9971 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9975 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
9979 /* Note that the grammar rejects storage classes
9980 in typenames, fields or parameters. */
9981 if (constp
|| volatilep
)
9982 type
= cp_build_type_variant (type
, constp
, volatilep
);
9983 if (current_lang_name
== lang_name_java
)
9984 TYPE_FOR_JAVA (type
) = 1;
9986 if (decl_context
== FIELD
)
9988 if (declarator
== current_class_name
)
9989 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
9991 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
9992 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
9993 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
9997 /* Make sure this typedef lives as long as its type,
9998 since it might be used as a template parameter. */
9999 if (type
!= error_mark_node
)
10000 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10001 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10002 if (type
!= error_mark_node
)
10006 /* If the user declares "struct {...} foo" then `foo' will have
10007 an anonymous name. Fill that name in now. Nothing can
10008 refer to it, so nothing needs know about the name change.
10009 The TYPE_NAME field was filled in by build_struct_xref. */
10010 if (type
!= error_mark_node
10011 && TYPE_NAME (type
)
10012 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10013 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10015 /* For anonymous structs that are cv-qualified, need to use
10016 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10017 type not referenced after this block, don't bother
10018 resetting type to original type, ie. TREE_TYPE (decl). */
10019 type
= TYPE_MAIN_VARIANT (type
);
10021 /* Replace the anonymous name with the real name everywhere. */
10022 lookup_tag_reverse (type
, declarator
);
10023 TYPE_NAME (type
) = decl
;
10025 if (TYPE_LANG_SPECIFIC (type
))
10026 TYPE_WAS_ANONYMOUS (type
) = 1;
10028 /* XXX Temporarily set the scope.
10029 When returning, start_decl expects it as NULL_TREE,
10030 and will then then set it using pushdecl. */
10031 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10032 if (current_class_type
)
10033 DECL_CONTEXT (decl
) = current_class_type
;
10035 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10037 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10038 DECL_ASSEMBLER_NAME (decl
)
10039 = get_identifier (build_overload_name (type
, 1, 1));
10040 DECL_CONTEXT (decl
) = NULL_TREE
;
10042 /* FIXME remangle member functions; member functions of a
10043 type with external linkage have external linkage. */
10046 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10048 cp_error_at ("typedef name may not be class-qualified", decl
);
10053 if (ctype
== NULL_TREE
)
10055 if (TREE_CODE (type
) != METHOD_TYPE
)
10056 cp_error_at ("invalid type qualifier for non-method type", decl
);
10058 ctype
= TYPE_METHOD_BASETYPE (type
);
10060 if (ctype
!= NULL_TREE
)
10061 grok_method_quals (ctype
, decl
, quals
);
10064 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10065 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10066 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10068 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10070 error ("non-object member `%s' cannot be declared mutable", name
);
10073 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10074 inlinep
, friendp
, raises
!= NULL_TREE
);
10077 error ("typedef declaration includes an initializer");
10082 /* Detect the case of an array type of unspecified size
10083 which came, as such, direct from a typedef name.
10084 We must copy the type, so that each identifier gets
10085 a distinct type, so that each identifier's size can be
10086 controlled separately by its own initializer. */
10088 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10089 && TYPE_DOMAIN (type
) == NULL_TREE
)
10091 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10094 /* If this is a type name (such as, in a cast or sizeof),
10095 compute the type and return it now. */
10097 if (decl_context
== TYPENAME
)
10099 /* Note that the grammar rejects storage classes
10100 in typenames, fields or parameters. */
10101 if (constp
|| volatilep
)
10103 if (IS_SIGNATURE (type
))
10104 error ("`const' or `volatile' specified with signature type");
10106 type
= cp_build_type_variant (type
, constp
, volatilep
);
10109 /* Special case: "friend class foo" looks like a TYPENAME context. */
10114 cp_error ("`volatile' specified for friend class declaration");
10119 cp_error ("`inline' specified for friend class declaration");
10123 /* Only try to do this stuff if we didn't already give up. */
10124 if (type
!= integer_type_node
)
10126 /* A friendly class? */
10127 if (current_class_type
)
10128 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10130 error ("trying to make class `%s' a friend of global scope",
10131 TYPE_NAME_STRING (type
));
10132 type
= void_type_node
;
10137 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10138 if (ctype
== NULL_TREE
)
10140 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10141 ctype
= TYPE_METHOD_BASETYPE (type
);
10143 grok_method_quals (ctype
, dummy
, quals
);
10144 type
= TREE_TYPE (dummy
);
10149 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10150 && decl_context
!= CATCHPARM
10151 && TREE_CODE (type
) != UNION_TYPE
10154 cp_error ("abstract declarator `%T' used as declaration", type
);
10155 declarator
= make_anon_name ();
10158 /* `void' at top level (not within pointer)
10159 is allowed only in typedefs or type names.
10160 We don't complain about parms either, but that is because
10161 a better error message can be made later. */
10163 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10166 error ("unnamed variable or field declared void");
10167 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10169 if (IDENTIFIER_OPNAME_P (declarator
))
10170 my_friendly_abort (356);
10172 error ("variable or field `%s' declared void", name
);
10175 error ("variable or field declared void");
10176 type
= integer_type_node
;
10179 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10180 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10183 register tree decl
;
10185 if (decl_context
== PARM
)
10187 if (ctype
|| in_namespace
)
10188 error ("cannot use `::' in parameter declaration");
10190 /* A parameter declared as an array of T is really a pointer to T.
10191 One declared as a function is really a pointer to a function.
10192 One declared as a member is really a pointer to member. */
10194 if (TREE_CODE (type
) == ARRAY_TYPE
)
10196 /* Transfer const-ness of array into that of type pointed to. */
10197 type
= build_pointer_type
10198 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10199 volatilep
= constp
= 0;
10201 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10202 type
= build_pointer_type (type
);
10203 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10204 type
= build_pointer_type (type
);
10205 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10207 error ("declaration of `%s' as void", name
);
10211 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10213 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10214 inlinep
, friendp
, raises
!= NULL_TREE
);
10215 if (current_class_type
10216 && IS_SIGNATURE (current_class_type
))
10219 error ("parameter of signature member function declared `inline'");
10220 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10221 error ("parameter of signature member function declared `auto'");
10222 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10223 error ("parameter of signature member function declared `register'");
10226 /* Compute the type actually passed in the parmlist,
10227 for the case where there is no prototype.
10228 (For example, shorts and chars are passed as ints.)
10229 When there is a prototype, this is overridden later. */
10231 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10233 else if (decl_context
== FIELD
)
10235 if (type
== error_mark_node
)
10237 /* Happens when declaring arrays of sizes which
10238 are error_mark_node, for example. */
10241 else if (in_namespace
)
10243 /* Something like struct S { int N::j; }; */
10244 cp_error ("invalid use of `::'");
10247 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10250 tree function_context
;
10252 /* We catch the others as conflicts with the builtin
10254 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10256 cp_error ("function `%D' cannot be declared friend",
10263 if (ctype
== NULL_TREE
)
10264 ctype
= current_class_type
;
10266 if (ctype
== NULL_TREE
)
10268 cp_error ("can't make `%D' into a method -- not in a class",
10270 return void_type_node
;
10273 /* ``A union may [ ... ] not [ have ] virtual functions.''
10275 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10277 cp_error ("function `%D' declared virtual inside a union",
10279 return void_type_node
;
10282 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10283 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10284 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10285 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10289 cp_error ("`%D' cannot be declared virtual, since it is always static",
10294 else if (staticp
< 2)
10295 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10296 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10299 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10300 function_context
= (ctype
!= NULL_TREE
) ?
10301 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10302 publicp
= (! friendp
|| ! staticp
)
10303 && function_context
== NULL_TREE
;
10304 decl
= grokfndecl (ctype
, type
,
10305 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10306 ? declarator
: dname
,
10308 virtualp
, flags
, quals
, raises
, attrlist
,
10309 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10310 funcdef_flag
, template_count
, in_namespace
);
10311 if (decl
== NULL_TREE
)
10314 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10315 /* The decl and setting of decl_machine_attr is also turned off. */
10316 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10319 if (explicitp
== 2)
10320 DECL_NONCONVERTING_P (decl
) = 1;
10322 else if (TREE_CODE (type
) == METHOD_TYPE
)
10324 /* We only get here for friend declarations of
10325 members of other classes. */
10326 /* All method decls are public, so tell grokfndecl to set
10327 TREE_PUBLIC, also. */
10328 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10329 virtualp
, flags
, quals
, raises
, attrlist
,
10330 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10331 template_count
, in_namespace
);
10332 if (decl
== NULL_TREE
)
10335 else if (!staticp
&& ! processing_template_decl
10336 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10337 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10340 cp_error ("field `%D' has incomplete type", declarator
);
10342 cp_error ("name `%T' has incomplete type", type
);
10344 /* If we're instantiating a template, tell them which
10345 instantiation made the field's type be incomplete. */
10346 if (current_class_type
10347 && TYPE_NAME (current_class_type
)
10348 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10349 && declspecs
&& TREE_VALUE (declspecs
)
10350 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10351 cp_error (" in instantiation of template `%T'",
10352 current_class_type
);
10354 type
= error_mark_node
;
10361 error ("`%s' is neither function nor method; cannot be declared friend",
10362 IDENTIFIER_POINTER (declarator
));
10370 /* Friends are treated specially. */
10371 if (ctype
== current_class_type
)
10372 warning ("member functions are implicitly friends of their class");
10375 tree t
= NULL_TREE
;
10376 if (decl
&& DECL_NAME (decl
))
10378 if (template_class_depth (current_class_type
) == 0)
10380 = check_explicit_specialization
10382 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10383 t
= do_friend (ctype
, declarator
, decl
,
10384 last_function_parms
, flags
, quals
,
10387 if (t
&& funcdef_flag
)
10390 return void_type_node
;
10394 /* Structure field. It may not be a function, except for C++ */
10396 if (decl
== NULL_TREE
)
10402 /* An attempt is being made to initialize a non-static
10403 member. But, from [class.mem]:
10405 4 A member-declarator can contain a
10406 constant-initializer only if it declares a static
10407 member (_class.static_) of integral or enumeration
10408 type, see _class.static.data_.
10410 This used to be relatively common practice, but
10411 the rest of the compiler does not correctly
10412 handle the initialization unless the member is
10413 static so we make it static below. */
10414 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10415 constp
? "const member" : "member",
10417 cp_pedwarn ("making `%D' static", declarator
);
10421 /* Motion 10 at San Diego: If a static const integral data
10422 member is initialized with an integral constant
10423 expression, the initializer may appear either in the
10424 declaration (within the class), or in the definition,
10425 but not both. If it appears in the class, the member is
10426 a member constant. The file-scope definition is always
10428 if (CLASS_TYPE_P (type
)
10429 || TREE_CODE (type
) == REFERENCE_TYPE
)
10431 cp_error ("in-class initialization of static data member of non-integral type `%T'",
10433 /* If we just return the declaration, crashes will
10434 sometimes occur. We therefore return
10435 void_type_node, as if this was a friend
10436 declaration, to cause callers to completely
10437 ignore this declaration. */
10438 return void_type_node
;
10441 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10443 else if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10444 && !uses_template_parms (type
))
10445 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10450 /* ANSI C++ Apr '95 wp 9.2 */
10451 if (declarator
== current_class_name
)
10452 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10455 /* C++ allows static class members.
10456 All other work for this is done by grokfield.
10457 This VAR_DCL is built by build_lang_field_decl.
10458 All other VAR_DECLs are built by build_decl. */
10459 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10460 TREE_STATIC (decl
) = 1;
10461 /* In class context, 'static' means public access. */
10462 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10466 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10467 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10469 DECL_MUTABLE_P (decl
) = 1;
10470 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10474 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10475 inlinep
, friendp
, raises
!= NULL_TREE
);
10478 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10480 tree original_name
;
10486 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10487 original_name
= dname
;
10489 original_name
= declarator
;
10491 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10492 error ("storage class `auto' invalid for function `%s'", name
);
10493 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10494 error ("storage class `register' invalid for function `%s'", name
);
10496 /* Function declaration not at top level.
10497 Storage classes other than `extern' are not allowed
10498 and `extern' makes no difference. */
10499 if (! toplevel_bindings_p ()
10500 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10501 || RIDBIT_SETP (RID_INLINE
, specbits
))
10504 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10505 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10507 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10510 if (ctype
== NULL_TREE
)
10514 error ("virtual non-class function `%s'", name
);
10518 if (current_lang_name
== lang_name_cplusplus
10519 && ! processing_template_decl
10520 && ! MAIN_NAME_P (original_name
)
10521 && ! (IDENTIFIER_LENGTH (original_name
) > 10
10522 && IDENTIFIER_POINTER (original_name
)[0] == '_'
10523 && IDENTIFIER_POINTER (original_name
)[1] == '_'
10524 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
10525 /* Plain overloading: will not be grok'd by grokclassfn. */
10526 if (name_mangling_version
< 1
10527 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10528 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
10530 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10531 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10532 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10534 /* Record presence of `static'. */
10535 publicp
= (ctype
!= NULL_TREE
10536 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10537 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10539 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10540 virtualp
, flags
, quals
, raises
, attrlist
,
10542 publicp
, inlinep
, funcdef_flag
,
10543 template_count
, in_namespace
);
10544 if (decl
== NULL_TREE
)
10547 /* Among other times, could occur from check_explicit_specialization
10548 returning an error_mark_node. */
10549 if (decl
== error_mark_node
)
10550 return error_mark_node
;
10552 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
10553 && (! DECL_USE_TEMPLATE (decl
) ||
10554 name_mangling_version
< 1))
10555 DECL_ASSEMBLER_NAME (decl
) = declarator
;
10559 int illegal_static
= 0;
10561 /* Don't allow a static member function in a class, and forbid
10562 declaring main to be static. */
10563 if (TREE_CODE (type
) == METHOD_TYPE
)
10565 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10566 illegal_static
= 1;
10568 else if (current_function_decl
)
10570 /* FIXME need arm citation */
10571 error ("cannot declare static function inside another function");
10572 illegal_static
= 1;
10575 if (illegal_static
)
10578 RIDBIT_RESET (RID_STATIC
, specbits
);
10584 /* It's a variable. */
10586 if (decl_context
== CATCHPARM
)
10591 error ("cannot use `::' in parameter declaration");
10594 /* A parameter declared as an array of T is really a pointer to T.
10595 One declared as a function is really a pointer to a function.
10596 One declared as a member is really a pointer to member. */
10598 if (TREE_CODE (type
) == ARRAY_TYPE
)
10600 /* Transfer const-ness of array into that of type
10602 type
= build_pointer_type
10603 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10604 volatilep
= constp
= 0;
10606 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10607 type
= build_pointer_type (type
);
10608 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10609 type
= build_pointer_type (type
);
10612 /* An uninitialized decl with `extern' is a reference. */
10613 decl
= grokvardecl (type
, declarator
, &specbits
,
10614 initialized
, constp
, in_namespace
);
10615 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10616 inlinep
, friendp
, raises
!= NULL_TREE
);
10620 DECL_CONTEXT (decl
) = ctype
;
10623 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10625 RIDBIT_RESET (RID_STATIC
, specbits
);
10627 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10629 cp_error ("static member `%D' declared `register'", decl
);
10630 RIDBIT_RESET (RID_REGISTER
, specbits
);
10632 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10634 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10636 RIDBIT_RESET (RID_EXTERN
, specbits
);
10641 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10643 error ("`%s' cannot be declared mutable", name
);
10646 /* Record `register' declaration for warnings on &
10647 and in case doing stupid register allocation. */
10649 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10650 DECL_REGISTER (decl
) = 1;
10652 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10653 DECL_THIS_EXTERN (decl
) = 1;
10655 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10656 DECL_THIS_STATIC (decl
) = 1;
10658 /* Record constancy and volatility. */
10661 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10664 TREE_SIDE_EFFECTS (decl
) = 1;
10665 TREE_THIS_VOLATILE (decl
) = 1;
10672 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10673 An empty exprlist is a parmlist. An exprlist which
10674 contains only identifiers at the global level
10675 is a parmlist. Otherwise, it is an exprlist. */
10678 parmlist_is_exprlist (exprs
)
10681 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10684 if (toplevel_bindings_p ())
10686 /* At the global level, if these are all identifiers,
10687 then it is a parmlist. */
10690 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10692 exprs
= TREE_CHAIN (exprs
);
10699 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10702 C++: also subroutine of `start_function'. */
10705 require_complete_types_for_parms (parms
)
10708 if (processing_template_decl
)
10713 tree type
= TREE_TYPE (parms
);
10714 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10716 if (DECL_NAME (parms
))
10717 error ("parameter `%s' has incomplete type",
10718 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10720 error ("parameter has incomplete type");
10721 TREE_TYPE (parms
) = error_mark_node
;
10724 /* If the arg types are incomplete in a declaration,
10725 they must include undefined tags.
10726 These tags can never be defined in the scope of the declaration,
10727 so the types can never be completed,
10728 and no call can be compiled successfully. */
10729 /* This is not the right behavior for C++, but not having
10730 it is also probably wrong. */
10733 /* Now warn if is a pointer to an incomplete type. */
10734 while (TREE_CODE (type
) == POINTER_TYPE
10735 || TREE_CODE (type
) == REFERENCE_TYPE
)
10736 type
= TREE_TYPE (type
);
10737 type
= TYPE_MAIN_VARIANT (type
);
10738 if (TYPE_SIZE (type
) == NULL_TREE
)
10740 if (DECL_NAME (parm
) != NULL_TREE
)
10741 warning ("parameter `%s' points to incomplete type",
10742 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10744 warning ("parameter points to incomplete type");
10748 parms
= TREE_CHAIN (parms
);
10752 /* Decode the list of parameter types for a function type.
10753 Given the list of things declared inside the parens,
10754 return a list of types.
10756 The list we receive can have three kinds of elements:
10757 an IDENTIFIER_NODE for names given without types,
10758 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10759 or void_type_node, to mark the end of an argument list
10760 when additional arguments are not permitted (... was not used).
10762 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10763 a mere declaration. A nonempty identifier-list gets an error message
10764 when FUNCDEF_FLAG is zero.
10765 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10766 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10768 If all elements of the input list contain types,
10769 we return a list of the types.
10770 If all elements contain no type (except perhaps a void_type_node
10771 at the end), we return a null list.
10772 If some have types and some do not, it is an error, and we
10773 return a null list.
10775 Also set last_function_parms to either
10776 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10777 A list of names is converted to a chain of PARM_DECLs
10778 by store_parm_decls so that ultimately it is always a chain of decls.
10780 Note that in C++, parameters can take default values. These default
10781 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10782 an error to specify default values which are followed by parameters
10783 that have no default values, or an ELLIPSES. For simplicities sake,
10784 only parameters which are specified with their types can take on
10788 grokparms (first_parm
, funcdef_flag
)
10792 tree result
= NULL_TREE
;
10793 tree decls
= NULL_TREE
;
10795 if (first_parm
!= NULL_TREE
10796 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10798 if (! funcdef_flag
)
10799 pedwarn ("parameter names (without types) in function declaration");
10800 last_function_parms
= first_parm
;
10803 else if (first_parm
!= NULL_TREE
10804 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10805 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10806 my_friendly_abort (145);
10809 /* Types were specified. This is a list of declarators
10810 each represented as a TREE_LIST node. */
10811 register tree parm
, chain
;
10812 int any_init
= 0, any_error
= 0;
10814 if (first_parm
!= NULL_TREE
)
10816 tree last_result
= NULL_TREE
;
10817 tree last_decl
= NULL_TREE
;
10819 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10821 tree type
= NULL_TREE
, list_node
= parm
;
10822 register tree decl
= TREE_VALUE (parm
);
10823 tree init
= TREE_PURPOSE (parm
);
10825 chain
= TREE_CHAIN (parm
);
10826 /* @@ weak defense against parse errors. */
10827 if (TREE_CODE (decl
) != VOID_TYPE
10828 && TREE_CODE (decl
) != TREE_LIST
)
10830 /* Give various messages as the need arises. */
10831 if (TREE_CODE (decl
) == STRING_CST
)
10832 cp_error ("invalid string constant `%E'", decl
);
10833 else if (TREE_CODE (decl
) == INTEGER_CST
)
10834 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10838 if (TREE_CODE (decl
) != VOID_TYPE
)
10840 decl
= grokdeclarator (TREE_VALUE (decl
),
10841 TREE_PURPOSE (decl
),
10842 PARM
, init
!= NULL_TREE
,
10846 type
= TREE_TYPE (decl
);
10847 if (TREE_CODE (type
) == VOID_TYPE
)
10848 decl
= void_type_node
;
10849 else if (TREE_CODE (type
) == METHOD_TYPE
)
10851 if (DECL_NAME (decl
))
10852 /* Cannot use the decl here because
10853 we don't have DECL_CONTEXT set up yet. */
10854 cp_error ("parameter `%D' invalidly declared method type",
10857 error ("parameter invalidly declared method type");
10858 type
= build_pointer_type (type
);
10859 TREE_TYPE (decl
) = type
;
10861 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10863 if (DECL_NAME (decl
))
10864 cp_error ("parameter `%D' invalidly declared offset type",
10867 error ("parameter invalidly declared offset type");
10868 type
= build_pointer_type (type
);
10869 TREE_TYPE (decl
) = type
;
10871 else if (TREE_CODE (type
) == RECORD_TYPE
10872 && TYPE_LANG_SPECIFIC (type
)
10873 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10875 abstract_virtuals_error (decl
, type
);
10876 any_error
= 1; /* Seems like a good idea. */
10878 else if (TREE_CODE (type
) == RECORD_TYPE
10879 && TYPE_LANG_SPECIFIC (type
)
10880 && IS_SIGNATURE (type
))
10882 signature_error (decl
, type
);
10883 any_error
= 1; /* Seems like a good idea. */
10885 else if (POINTER_TYPE_P (type
))
10888 while (POINTER_TYPE_P (t
)
10889 || (TREE_CODE (t
) == ARRAY_TYPE
10890 && TYPE_DOMAIN (t
) != NULL_TREE
))
10892 if (TREE_CODE (t
) == ARRAY_TYPE
)
10893 cp_error ("parameter type `%T' includes pointer to array of unknown bound",
10898 if (TREE_CODE (decl
) == VOID_TYPE
)
10900 if (result
== NULL_TREE
)
10902 result
= void_list_node
;
10903 last_result
= result
;
10907 TREE_CHAIN (last_result
) = void_list_node
;
10908 last_result
= void_list_node
;
10911 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10912 error ("`void' in parameter list must be entire list");
10916 /* Since there is a prototype, args are passed in their own types. */
10917 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10918 #ifdef PROMOTE_PROTOTYPES
10919 if ((TREE_CODE (type
) == INTEGER_TYPE
10920 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10921 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10922 DECL_ARG_TYPE (decl
) = integer_type_node
;
10929 if (TREE_CODE (init
) == SAVE_EXPR
)
10930 PARM_DECL_EXPR (init
) = 1;
10931 else if (processing_template_decl
)
10933 /* Unparsed default arg from in-class decl. */
10934 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10936 else if (TREE_CODE (init
) == VAR_DECL
10937 || TREE_CODE (init
) == PARM_DECL
)
10939 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10941 /* ``Local variables may not be used in default
10942 argument expressions.'' dpANSI C++ 8.2.6 */
10943 /* If extern int i; within a function is not
10944 considered a local variable, then this code is
10946 cp_error ("local variable `%D' may not be used as a default argument", init
);
10949 else if (TREE_READONLY_DECL_P (init
))
10950 init
= decl_constant_value (init
);
10953 init
= require_instantiated_type (type
, init
, integer_zero_node
);
10954 if (! processing_template_decl
10955 && init
!= error_mark_node
10956 && TREE_CODE (init
) != DEFAULT_ARG
10957 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
10958 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10959 TREE_TYPE (init
), decl
);
10965 if (decls
== NULL_TREE
)
10972 TREE_CHAIN (last_decl
) = decl
;
10975 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
10977 TREE_PURPOSE (list_node
) = init
;
10978 TREE_VALUE (list_node
) = type
;
10979 TREE_CHAIN (list_node
) = NULL_TREE
;
10982 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
10983 if (result
== NULL_TREE
)
10985 result
= list_node
;
10986 last_result
= result
;
10990 TREE_CHAIN (last_result
) = list_node
;
10991 last_result
= list_node
;
10995 TREE_CHAIN (last_result
) = NULL_TREE
;
10996 /* If there are no parameters, and the function does not end
10997 with `...', then last_decl will be NULL_TREE. */
10998 if (last_decl
!= NULL_TREE
)
10999 TREE_CHAIN (last_decl
) = NULL_TREE
;
11003 last_function_parms
= decls
;
11005 /* In a fcn definition, arg types must be complete. */
11006 if (funcdef_flag
> 0)
11007 require_complete_types_for_parms (last_function_parms
);
11012 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11013 FUNCTION_TYPE with the newly parsed version of its default argument, which
11014 was previously digested as text. See snarf_defarg et al in lex.c. */
11017 replace_defarg (arg
, init
)
11020 if (! processing_template_decl
11021 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11022 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11023 TREE_TYPE (init
), TREE_VALUE (arg
));
11024 TREE_PURPOSE (arg
) = init
;
11031 tree t
= FUNCTION_ARG_CHAIN (d
);
11032 if (DECL_CONSTRUCTOR_P (d
)
11033 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11034 t
= TREE_CHAIN (t
);
11035 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11036 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11037 == DECL_CLASS_CONTEXT (d
))
11038 && (TREE_CHAIN (t
) == NULL_TREE
11039 || TREE_CHAIN (t
) == void_list_node
11040 || TREE_PURPOSE (TREE_CHAIN (t
))))
11045 /* These memoizing functions keep track of special properties which
11046 a class may have. `grok_ctor_properties' notices whether a class
11047 has a constructor of the form X(X&), and also complains
11048 if the class has a constructor of the form X(X).
11049 `grok_op_properties' takes notice of the various forms of
11050 operator= which are defined, as well as what sorts of type conversion
11051 may apply. Both functions take a FUNCTION_DECL as an argument. */
11054 grok_ctor_properties (ctype
, decl
)
11057 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11058 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11060 /* When a type has virtual baseclasses, a magical first int argument is
11061 added to any ctor so we can tell if the class has been initialized
11062 yet. This could screw things up in this function, so we deliberately
11063 ignore the leading int if we're in that situation. */
11064 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11066 my_friendly_assert (parmtypes
11067 && TREE_VALUE (parmtypes
) == integer_type_node
,
11069 parmtypes
= TREE_CHAIN (parmtypes
);
11070 parmtype
= TREE_VALUE (parmtypes
);
11073 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11074 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11075 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11076 || TREE_CHAIN (parmtypes
) == void_list_node
11077 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11079 TYPE_HAS_INIT_REF (ctype
) = 1;
11080 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11081 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11083 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11084 && TREE_CHAIN (parmtypes
) != NULL_TREE
11085 && TREE_CHAIN (parmtypes
) == void_list_node
)
11087 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11089 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11092 else if (TREE_CODE (parmtype
) == VOID_TYPE
11093 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11094 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11099 /* An operator with this name can be either unary or binary. */
11105 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11106 || name
== ansi_opname
[(int) ADDR_EXPR
]
11107 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11108 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11109 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11110 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11113 /* An operator with this name can only be unary. */
11119 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11120 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11121 || name
== ansi_opname
[(int) COMPONENT_REF
]
11122 || OPERATOR_TYPENAME_P (name
));
11125 /* Do a little sanity-checking on how they declared their operator. */
11128 grok_op_properties (decl
, virtualp
, friendp
)
11130 int virtualp
, friendp
;
11132 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11133 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11134 tree name
= DECL_NAME (decl
);
11136 if (current_class_type
== NULL_TREE
)
11141 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11142 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11143 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11144 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11145 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11146 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11147 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11148 || name
== ansi_opname
[(int) MEMBER_REF
])
11149 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11150 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11151 TYPE_GETS_NEW (current_class_type
) |= 1;
11152 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11153 TYPE_GETS_DELETE (current_class_type
) |= 1;
11154 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11155 TYPE_GETS_NEW (current_class_type
) |= 2;
11156 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11157 TYPE_GETS_DELETE (current_class_type
) |= 2;
11160 if (name
== ansi_opname
[(int) NEW_EXPR
]
11161 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11163 /* When the compiler encounters the definition of A::operator new, it
11164 doesn't look at the class declaration to find out if it's static. */
11166 revert_static_member_fn (&decl
, NULL
, NULL
);
11168 /* Take care of function decl if we had syntax errors. */
11169 if (argtypes
== NULL_TREE
)
11171 = build_function_type (ptr_type_node
,
11172 hash_tree_chain (integer_type_node
,
11175 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11177 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11178 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11181 revert_static_member_fn (&decl
, NULL
, NULL
);
11183 if (argtypes
== NULL_TREE
)
11185 = build_function_type (void_type_node
,
11186 hash_tree_chain (ptr_type_node
,
11190 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11192 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11193 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11194 != void_list_node
))
11195 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11200 /* An operator function must either be a non-static member function
11201 or have at least one parameter of a class, a reference to a class,
11202 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11203 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11205 if (OPERATOR_TYPENAME_P (name
)
11206 || name
== ansi_opname
[(int) CALL_EXPR
]
11207 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11208 || name
== ansi_opname
[(int) COMPONENT_REF
]
11209 || name
== ansi_opname
[(int) ARRAY_REF
])
11210 cp_error ("`%D' must be a nonstatic member function", decl
);
11215 if (DECL_STATIC_FUNCTION_P (decl
))
11216 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11219 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11221 tree arg
= TREE_VALUE (p
);
11222 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11223 arg
= TREE_TYPE (arg
);
11225 /* This lets bad template code slip through. */
11226 if (IS_AGGR_TYPE (arg
)
11227 || TREE_CODE (arg
) == ENUMERAL_TYPE
11228 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11229 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11233 ("`%D' must have an argument of class or enumerated type",
11240 if (name
== ansi_opname
[(int) CALL_EXPR
])
11241 return; /* No restrictions on args. */
11243 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11245 tree t
= TREE_TYPE (name
);
11246 if (TREE_CODE (t
) == VOID_TYPE
)
11247 pedwarn ("void is not a valid type conversion operator");
11248 else if (! friendp
)
11250 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11253 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11255 if (t
== current_class_type
)
11256 what
= "the same type";
11257 /* Don't force t to be complete here. */
11258 else if (IS_AGGR_TYPE (t
)
11260 && DERIVED_FROM_P (t
, current_class_type
))
11261 what
= "a base class";
11264 warning ("conversion to %s%s will never use a type conversion operator",
11265 ref
? "a reference to " : "", what
);
11269 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11273 if (list_length (argtypes
) != 3 && methodp
)
11275 cp_error ("`%D' must take exactly one argument", decl
);
11278 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11280 if (copy_assignment_arg_p (parmtype
, virtualp
)
11283 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11284 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11285 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11286 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11289 else if (name
== ansi_opname
[(int) COND_EXPR
])
11292 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11293 if (list_length (argtypes
) != 4)
11294 cp_error ("`%D' must take exactly three arguments", decl
);
11296 else if (ambi_op_p (name
))
11298 if (list_length (argtypes
) == 2)
11300 else if (list_length (argtypes
) == 3)
11302 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11303 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11304 && ! processing_template_decl
11305 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11308 cp_error ("postfix `%D' must take `int' as its argument",
11312 ("postfix `%D' must take `int' as its second argument",
11319 cp_error ("`%D' must take either zero or one argument", decl
);
11321 cp_error ("`%D' must take either one or two arguments", decl
);
11324 /* More Effective C++ rule 6. */
11326 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11327 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11329 tree arg
= TREE_VALUE (argtypes
);
11330 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11331 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11332 arg
= TREE_TYPE (arg
);
11333 arg
= TYPE_MAIN_VARIANT (arg
);
11334 if (list_length (argtypes
) == 2)
11336 if (TREE_CODE (ret
) != REFERENCE_TYPE
11337 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11339 cp_warning ("prefix `%D' should return `%T'", decl
,
11340 build_reference_type (arg
));
11344 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11345 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11349 else if (unary_op_p (name
))
11351 if (list_length (argtypes
) != 2)
11354 cp_error ("`%D' must take `void'", decl
);
11356 cp_error ("`%D' must take exactly one argument", decl
);
11359 else /* if (binary_op_p (name)) */
11361 if (list_length (argtypes
) != 3)
11364 cp_error ("`%D' must take exactly one argument", decl
);
11366 cp_error ("`%D' must take exactly two arguments", decl
);
11369 /* More Effective C++ rule 7. */
11371 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11372 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11373 || name
== ansi_opname
[COMPOUND_EXPR
]))
11374 cp_warning ("user-defined `%D' always evaluates both arguments",
11378 /* Effective C++ rule 23. */
11380 && list_length (argtypes
) == 3
11381 && (name
== ansi_opname
[PLUS_EXPR
]
11382 || name
== ansi_opname
[MINUS_EXPR
]
11383 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11384 || name
== ansi_opname
[MULT_EXPR
])
11385 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11386 cp_warning ("`%D' should return by value", decl
);
11390 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11391 if (TREE_PURPOSE (argtypes
))
11393 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11394 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11395 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11398 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11401 cp_error ("`%D' cannot have default arguments", decl
);
11406 /* Get the struct, enum or union (CODE says which) with tag NAME.
11407 Define the tag as a forward-reference if it is not defined.
11409 C++: If a class derivation is given, process it here, and report
11410 an error if multiple derivation declarations are not identical.
11412 If this is a definition, come in through xref_tag and only look in
11413 the current frame for the name (since C++ allows new names in any
11417 xref_tag (code_type_node
, name
, binfo
, globalize
)
11418 tree code_type_node
;
11422 enum tag_types tag_code
;
11423 enum tree_code code
;
11425 register tree ref
, t
;
11426 struct binding_level
*b
= inner_binding_level
;
11428 tree attributes
= NULL_TREE
;
11430 /* If we are called from the parser, code_type_node will sometimes be a
11431 TREE_LIST. This indicates that the user wrote
11432 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11434 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11436 attributes
= TREE_PURPOSE (code_type_node
);
11437 code_type_node
= TREE_VALUE (code_type_node
);
11440 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11445 case signature_type
:
11446 code
= RECORD_TYPE
;
11452 code
= ENUMERAL_TYPE
;
11455 my_friendly_abort (18);
11458 /* If a cross reference is requested, look up the type
11459 already defined for this tag and return it. */
11460 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11463 name
= TYPE_IDENTIFIER (t
);
11467 t
= IDENTIFIER_TYPE_VALUE (name
);
11468 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11469 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11474 if (t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11475 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11477 cp_error ("redeclaration of template type-parameter `%T'", name
);
11478 cp_error_at (" previously declared here `%#D'",
11479 TEMPLATE_TYPE_DECL (t
));
11481 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11484 /* If we know we are defining this tag, only look it up in
11485 this scope and don't try to find it as a type. */
11486 ref
= lookup_tag (code
, name
, b
, 1);
11490 if (current_class_type
11491 && template_class_depth (current_class_type
)
11492 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11493 /* Since GLOBALIZE is non-zero, we are not looking at a
11494 definition of this tag. Since, in addition, we are currently
11495 processing a (member) template declaration of a template
11496 class, we don't want to do any lookup at all; consider:
11503 { template <class V>
11504 friend struct S1; };
11506 Here, the S2::S1 declaration should not be confused with the
11507 outer declaration. In particular, the inner version should
11508 have a template parameter of level 2, not level 1. This
11509 would be particularly important if the member declaration
11512 template <class V = U> friend struct S1;
11514 say, when we should tsubst into `U' when instantiating S2. */
11521 ref
= lookup_tag (code
, name
, b
, 0);
11525 /* Try finding it as a type declaration. If that wins,
11527 ref
= lookup_name (name
, 1);
11529 if (ref
!= NULL_TREE
11530 && processing_template_decl
11531 && DECL_CLASS_TEMPLATE_P (ref
)
11532 && template_class_depth (current_class_type
) == 0)
11533 /* Since GLOBALIZE is true, we're declaring a global
11534 template, so we want this type. */
11535 ref
= DECL_RESULT (ref
);
11537 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11538 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11539 ref
= TREE_TYPE (ref
);
11546 push_obstacks_nochange ();
11550 /* If no such tag is yet defined, create a forward-reference node
11551 and record it as the "definition".
11552 When a real declaration of this type is found,
11553 the forward-reference will be altered into a real type. */
11555 /* In C++, since these migrate into the global scope, we must
11556 build them on the permanent obstack. */
11558 temp
= allocation_temporary_p ();
11560 end_temporary_allocation ();
11562 if (code
== ENUMERAL_TYPE
)
11564 cp_error ("use of enum `%#D' without previous declaration", name
);
11566 ref
= make_node (ENUMERAL_TYPE
);
11568 /* Give the type a default layout like unsigned int
11569 to avoid crashing if it does not get defined. */
11570 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11571 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11572 TREE_UNSIGNED (ref
) = 1;
11573 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11574 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11575 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11577 /* Enable us to recognize when a type is created in class context.
11578 To do nested classes correctly, this should probably be cleared
11579 out when we leave this classes scope. Currently this in only
11580 done in `start_enum'. */
11582 pushtag (name
, ref
, globalize
);
11586 struct binding_level
*old_b
= class_binding_level
;
11588 ref
= make_lang_type (code
);
11590 if (tag_code
== signature_type
)
11592 SET_SIGNATURE (ref
);
11593 /* Since a signature type will be turned into the type
11594 of signature tables, it's not only an interface. */
11595 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11596 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11597 /* A signature doesn't have a vtable. */
11598 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11601 #ifdef NONNESTED_CLASSES
11602 /* Class types don't nest the way enums do. */
11603 class_binding_level
= (struct binding_level
*)0;
11605 pushtag (name
, ref
, globalize
);
11606 class_binding_level
= old_b
;
11611 /* If it no longer looks like a nested type, make sure it's
11613 If it is not an IDENTIFIER, this is not a declaration */
11614 if (b
->namespace_p
&& !class_binding_level
11615 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11617 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11618 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11621 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11622 redeclare_class_template (ref
, current_template_parms
);
11626 xref_basetypes (code_type_node
, name
, ref
, binfo
);
11628 /* Until the type is defined, tentatively accept whatever
11629 structure tag the user hands us. */
11630 if (TYPE_SIZE (ref
) == NULL_TREE
11631 && ref
!= current_class_type
11632 /* Have to check this, in case we have contradictory tag info. */
11633 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11635 if (tag_code
== class_type
)
11636 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11637 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11638 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11643 TREE_TYPE (ref
) = attributes
;
11649 xref_tag_from_type (old
, id
, globalize
)
11653 tree code_type_node
;
11655 if (TREE_CODE (old
) == RECORD_TYPE
)
11656 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11657 ? class_type_node
: record_type_node
);
11659 code_type_node
= union_type_node
;
11661 if (id
== NULL_TREE
)
11662 id
= TYPE_IDENTIFIER (old
);
11664 return xref_tag (code_type_node
, id
, NULL_TREE
, globalize
);
11668 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11669 tree code_type_node
;
11673 /* In the declaration `A : X, Y, ... Z' we mark all the types
11674 (A, X, Y, ..., Z) so we can check for duplicates. */
11677 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11679 if (tag_code
== union_type
)
11681 cp_error ("derived union `%T' invalid", ref
);
11685 len
= list_length (binfo
);
11686 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11688 SET_CLASSTYPE_MARKED (ref
);
11689 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11691 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11693 /* The base of a derived struct is public by default. */
11695 = (TREE_PURPOSE (binfo
) == access_public_node
11696 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11697 || (tag_code
!= class_type
11698 && (TREE_PURPOSE (binfo
) == access_default_node
11699 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11701 = (TREE_PURPOSE (binfo
) == access_protected_node
11702 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11704 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11705 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11706 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11707 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11708 tree basetype
= TREE_VALUE (binfo
);
11711 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11712 basetype
= TREE_TYPE (basetype
);
11714 || (TREE_CODE (basetype
) != RECORD_TYPE
11715 && TREE_CODE (basetype
) != TYPENAME_TYPE
11716 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11717 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11719 cp_error ("base type `%T' fails to be a struct or class type",
11720 TREE_VALUE (binfo
));
11724 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11727 /* This code replaces similar code in layout_basetypes.
11728 We put the complete_type first for implicit `typename'. */
11729 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11730 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11732 cp_error ("base class `%T' has incomplete type", basetype
);
11738 if (CLASSTYPE_MARKED (basetype
))
11740 if (basetype
== ref
)
11741 cp_error ("recursive type `%T' undefined", basetype
);
11743 cp_error ("duplicate base type `%T' invalid", basetype
);
11747 if (TYPE_FOR_JAVA (basetype
)
11748 && current_lang_stack
== current_lang_base
)
11749 TYPE_FOR_JAVA (ref
) = 1;
11751 /* Note that the BINFO records which describe individual
11752 inheritances are *not* shared in the lattice! They
11753 cannot be shared because a given baseclass may be
11754 inherited with different `accessibility' by different
11755 derived classes. (Each BINFO record describing an
11756 individual inheritance contains flags which say what
11757 the `accessibility' of that particular inheritance is.) */
11759 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11760 TYPE_BINFO_VTABLE (basetype
),
11761 TYPE_BINFO_VIRTUALS (basetype
), NULL_TREE
);
11763 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11764 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11765 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11766 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11767 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11769 SET_CLASSTYPE_MARKED (basetype
);
11771 /* We are free to modify these bits because they are meaningless
11772 at top level, and BASETYPE is a top-level type. */
11773 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11775 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11776 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11779 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11780 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11781 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
11786 TREE_VEC_LENGTH (binfos
) = i
;
11788 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11791 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11793 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11794 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11795 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11796 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11798 /* Unmark all the types. */
11800 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11801 CLEAR_CLASSTYPE_MARKED (ref
);
11807 tree current_local_enum
= NULL_TREE
;
11809 /* Begin compiling the definition of an enumeration type.
11810 NAME is its name (or null if anonymous).
11811 Returns the type object, as yet incomplete.
11812 Also records info about it so that build_enumerator
11813 may be used to declare the individual values as they are read. */
11819 register tree enumtype
= NULL_TREE
;
11820 struct binding_level
*b
= inner_binding_level
;
11822 /* We are wasting space here and putting these on the permanent_obstack so
11823 that typeid(local enum) will work correctly. */
11825 if (processing_template_decl
&& current_function_decl
)
11828 end_temporary_allocation ();
11830 /* If this is the real definition for a previous forward reference,
11831 fill in the contents in the same object that used to be the
11832 forward reference. */
11834 if (name
!= NULL_TREE
)
11835 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11837 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11838 cp_error ("multiple definition of `%#T'", enumtype
);
11841 enumtype
= make_node (ENUMERAL_TYPE
);
11842 pushtag (name
, enumtype
, 0);
11845 if (current_class_type
)
11846 TREE_ADDRESSABLE (b
->tags
) = 1;
11848 current_local_enum
= NULL_TREE
;
11850 /* We don't copy this value because build_enumerator needs to do it. */
11851 enum_next_value
= integer_zero_node
;
11854 GNU_xref_decl (current_function_decl
, enumtype
);
11858 /* After processing and defining all the values of an enumeration type,
11859 install their decls in the enumeration type and finish it off.
11860 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11861 Returns ENUMTYPE. */
11864 finish_enum (enumtype
, values
)
11865 register tree enumtype
, values
;
11867 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11868 /* Calculate the maximum value of any enumerator in this type. */
11874 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11879 /* The TREE_VALUE is a CONST_DECL for this enumeration
11881 decl
= TREE_VALUE (pair
);
11883 /* The type of the CONST_DECL is the type of the enumeration,
11884 not an INTEGER_TYPE. */
11885 TREE_TYPE (decl
) = enumtype
;
11887 /* The DECL_INITIAL will be NULL if we are processing a
11888 template declaration and this enumeration constant had no
11889 explicit initializer. */
11890 value
= DECL_INITIAL (decl
);
11893 /* Set the TREE_TYPE for the VALUE as well. When
11894 processing a template, however, we might have a
11895 TEMPLATE_PARM_INDEX, and we should not change the
11896 type of such a thing. */
11897 if (TREE_CODE (value
) == TEMPLATE_PARM_INDEX
)
11898 DECL_INITIAL (decl
) = value
11899 = build1 (NOP_EXPR
, enumtype
, value
);
11900 TREE_TYPE (value
) = enumtype
;
11903 minnode
= maxnode
= value
;
11904 else if (tree_int_cst_lt (maxnode
, value
))
11906 else if (tree_int_cst_lt (value
, minnode
))
11910 /* In the list we're building up, we want the enumeration
11911 values, not the CONST_DECLs. */
11912 TREE_VALUE (pair
) = value
;
11916 maxnode
= minnode
= integer_zero_node
;
11918 TYPE_VALUES (enumtype
) = nreverse (values
);
11920 if (processing_template_decl
)
11922 if (current_function_decl
)
11924 add_tree (build_min (TAG_DEFN
, enumtype
));
11925 resume_temporary_allocation ();
11931 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
11932 int lowprec
= min_precision (minnode
, unsignedp
);
11933 int highprec
= min_precision (maxnode
, unsignedp
);
11934 int precision
= MAX (lowprec
, highprec
);
11936 TYPE_SIZE (enumtype
) = NULL_TREE
;
11938 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11940 TYPE_PRECISION (enumtype
) = precision
;
11942 fixup_unsigned_type (enumtype
);
11944 fixup_signed_type (enumtype
);
11946 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
11947 /* Use the width of the narrowest normal C type which is wide enough. */
11948 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
11951 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
11953 TYPE_SIZE (enumtype
) = 0;
11954 layout_type (enumtype
);
11960 /* Fix up all variant types of this enum type. */
11961 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
11962 tem
= TYPE_NEXT_VARIANT (tem
))
11964 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
11965 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
11966 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
11967 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
11968 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
11969 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
11970 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
11971 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
11972 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
11976 /* Finish debugging output for this type. */
11977 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
11982 /* Build and install a CONST_DECL for one value of the
11983 current enumeration type (one that was begun with start_enum).
11984 Return a tree-list containing the name and its value.
11985 Assignment of sequential values by default is handled here. */
11988 build_enumerator (name
, value
)
11993 /* Remove no-op casts from the value. */
11995 STRIP_TYPE_NOPS (value
);
11997 if (! processing_template_decl
)
11999 /* Validate and default VALUE. */
12000 if (value
!= NULL_TREE
)
12002 if (TREE_READONLY_DECL_P (value
))
12003 value
= decl_constant_value (value
);
12005 if (TREE_CODE (value
) == INTEGER_CST
)
12007 value
= default_conversion (value
);
12008 constant_expression_warning (value
);
12012 cp_error ("enumerator value for `%D' not integer constant", name
);
12017 /* Default based on previous value. */
12018 if (value
== NULL_TREE
&& ! processing_template_decl
)
12020 value
= enum_next_value
;
12022 cp_error ("overflow in enumeration values at `%D'", name
);
12025 /* Remove no-op casts from the value. */
12027 STRIP_TYPE_NOPS (value
);
12029 /* To fix MAX_VAL enum consts. (bkoz) */
12030 TREE_TYPE (value
) = integer_type_node
;
12034 /* We have to always copy here; not all INTEGER_CSTs are unshared,
12035 and there's no wedding ring. Look at size_int()...*/
12036 if (value
!= NULL_TREE
)
12037 value
= copy_node (value
);
12039 /* C++ associates enums with global, function, or class declarations. */
12041 decl
= current_scope ();
12042 if (decl
&& decl
== current_class_type
)
12044 /* This enum declaration is local to the class, so we must put
12045 it in that class's list of decls. */
12046 decl
= build_lang_field_decl (CONST_DECL
, name
, integer_type_node
);
12047 DECL_INITIAL (decl
) = value
;
12048 TREE_READONLY (decl
) = 1;
12049 pushdecl_class_level (decl
);
12050 TREE_CHAIN (decl
) = current_local_enum
;
12051 current_local_enum
= decl
;
12055 /* It's a global enum, or it's local to a function. (Note local to
12056 a function could mean local to a class method. */
12057 decl
= build_decl (CONST_DECL
, name
, integer_type_node
);
12058 DECL_INITIAL (decl
) = value
;
12059 TREE_READONLY (decl
) = 1;
12062 GNU_xref_decl (current_function_decl
, decl
);
12065 if (! processing_template_decl
)
12067 /* Set basis for default for next value. */
12068 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12069 integer_one_node
, PLUS_EXPR
);
12070 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12073 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12077 /* Called after we have finished the declaration of an enumeration
12078 type, and, perhaps, some objects whose type involves the
12079 enumeration type. DECL, if non-NULL, is the declaration of the
12082 If CURRENT_LOCAL_ENUM is NULL, the DECL is returned.
12084 If CURRENT_LOCAL_ENUM is non-NULL, it should be the CONST_DECL for
12085 the last enumeration constant of an enumeration type that is a
12086 member of a class. The enumeration constants are already chained
12087 together through their TREE_CHAIN fields. This function sets the
12088 TREE_CHAIN of the last enumeration constant to DECL. The
12089 CONST_DECL for the last enumeration constant is returned.
12091 CURRENT_LOCAL_ENUM will always be NULL when this function
12095 grok_enum_decls (decl
)
12098 tree d
= current_local_enum
;
12100 if (d
== NULL_TREE
)
12105 if (TREE_CHAIN (d
) == NULL_TREE
)
12107 TREE_CHAIN (d
) = decl
;
12110 d
= TREE_CHAIN (d
);
12113 decl
= current_local_enum
;
12114 current_local_enum
= NULL_TREE
;
12119 static int function_depth
;
12121 /* Create the FUNCTION_DECL for a function definition.
12122 DECLSPECS and DECLARATOR are the parts of the declaration;
12123 they describe the function's name and the type it returns,
12124 but twisted together in a fashion that parallels the syntax of C.
12126 This function creates a binding context for the function body
12127 as well as setting up the FUNCTION_DECL in current_function_decl.
12129 Returns 1 on success. If the DECLARATOR is not suitable for a function
12130 (it defines a datum instead), we return 0, which tells
12131 yyparse to report a parse error.
12133 For C++, we must first check whether that datum makes any sense.
12134 For example, "class A local_a(1,2);" means that variable local_a
12135 is an aggregate of type A, which should have a constructor
12136 applied to it with the argument list [1, 2].
12138 @@ There is currently no way to retrieve the storage
12139 @@ allocated to FUNCTION (or all of its parms) if we return
12140 @@ something we had previously. */
12143 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12144 tree declspecs
, declarator
, attrs
;
12148 tree ctype
= NULL_TREE
;
12151 extern int have_extern_spec
;
12152 extern int used_extern_spec
;
12153 int doing_friend
= 0;
12155 /* Sanity check. */
12156 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12157 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12159 /* Assume, until we see it does. */
12160 current_function_returns_value
= 0;
12161 current_function_returns_null
= 0;
12162 warn_about_return_type
= 0;
12164 shadowed_labels
= 0;
12165 current_function_assigns_this
= 0;
12166 current_function_just_assigned_this
= 0;
12167 current_function_parms_stored
= 0;
12168 original_result_rtx
= NULL_RTX
;
12169 base_init_expr
= NULL_TREE
;
12170 current_base_init_list
= NULL_TREE
;
12171 current_member_init_list
= NULL_TREE
;
12172 ctor_label
= dtor_label
= NULL_TREE
;
12173 static_labelno
= 0;
12175 clear_temp_name ();
12177 /* This should only be done once on the top most decl. */
12178 if (have_extern_spec
&& !used_extern_spec
)
12180 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12181 used_extern_spec
= 1;
12186 decl1
= declarator
;
12189 /* What was this testing for, exactly? */
12190 if (! DECL_ARGUMENTS (decl1
)
12191 && !DECL_STATIC_FUNCTION_P (decl1
)
12192 && !DECL_ARTIFICIAL (decl1
)
12193 && DECL_CLASS_SCOPE_P (decl1
)
12194 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12195 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12197 tree binding
= binding_for_name (DECL_NAME (decl1
),
12198 current_namespace
);
12199 cp_error ("redeclaration of `%#D'", decl1
);
12200 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12201 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12202 else if (BINDING_VALUE (binding
))
12203 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12207 fntype
= TREE_TYPE (decl1
);
12208 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12209 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12211 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12212 class is in the (lexical) scope of the class in which it is
12214 if (!ctype
&& DECL_FRIEND_P (decl1
))
12216 ctype
= DECL_CLASS_CONTEXT (decl1
);
12218 /* CTYPE could be null here if we're dealing with a template;
12219 for example, `inline friend float foo()' inside a template
12220 will have no CTYPE set. */
12221 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12227 /* In a fcn definition, arg types must be complete. */
12228 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12230 /* In case some arg types were completed since the declaration was
12231 parsed, fix up the decls. */
12233 tree t
= DECL_ARGUMENTS (decl1
);
12234 for (; t
; t
= TREE_CHAIN (t
))
12235 layout_decl (t
, 0);
12238 last_function_parms
= DECL_ARGUMENTS (decl1
);
12239 last_function_parm_tags
= NULL_TREE
;
12243 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12244 /* If the declarator is not suitable for a function definition,
12245 cause a syntax error. */
12246 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12248 fntype
= TREE_TYPE (decl1
);
12250 restype
= TREE_TYPE (fntype
);
12251 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12252 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12254 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12255 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12256 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12257 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12258 fntype
= build_function_type (integer_type_node
,
12259 TYPE_ARG_TYPES (fntype
));
12261 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12263 TYPE_ARG_TYPES (fntype
));
12264 TREE_TYPE (decl1
) = fntype
;
12267 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12268 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12269 else if (DECL_MAIN_P (decl1
))
12271 /* If this doesn't return integer_type, complain. */
12272 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12274 if (pedantic
|| warn_return_type
)
12275 pedwarn ("return type for `main' changed to `int'");
12276 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12278 warn_about_return_type
= 0;
12282 /* Warn if function was previously implicitly declared
12283 (but not if we warned then). */
12284 if (! warn_implicit
12285 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12286 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12288 current_function_decl
= decl1
;
12289 /* Save the parm names or decls from this function's declarator
12290 where store_parm_decls will find them. */
12291 current_function_parms
= last_function_parms
;
12292 current_function_parm_tags
= last_function_parm_tags
;
12294 announce_function (decl1
);
12296 if (! processing_template_decl
)
12298 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12300 cp_error ("return-type `%#T' is an incomplete type",
12301 TREE_TYPE (fntype
));
12303 /* Make it return void instead, but don't change the
12304 type of the DECL_RESULT, in case we have a named return value. */
12307 = build_cplus_method_type (build_type_variant (ctype
,
12308 TREE_READONLY (decl1
),
12309 TREE_SIDE_EFFECTS (decl1
)),
12311 FUNCTION_ARG_CHAIN (decl1
));
12314 = build_function_type (void_type_node
,
12315 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12316 DECL_RESULT (decl1
)
12317 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12318 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12319 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12322 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12323 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12324 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12327 if (warn_about_return_type
)
12328 pedwarn ("return-type defaults to `int'");
12330 /* Effective C++ rule 15. See also c_expand_return. */
12332 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12333 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12334 cp_warning ("`operator=' should return a reference to `*this'");
12336 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12337 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12338 DECL_INITIAL (decl1
) = error_mark_node
;
12340 /* This function exists in static storage.
12341 (This does not mean `static' in the C sense!) */
12342 TREE_STATIC (decl1
) = 1;
12344 /* Set up current_class_type, and enter the scope of the class, if
12347 push_nested_class (ctype
, 1);
12348 else if (DECL_STATIC_FUNCTION_P (decl1
))
12349 push_nested_class (DECL_CONTEXT (decl1
), 2);
12351 /* We must call push_template_decl after current_class_type is set
12352 up. (If we are processing inline definitions after exiting a
12353 class scope, current_class_type will be NULL_TREE until set above
12354 by push_nested_class.) */
12355 if (processing_template_decl
)
12356 decl1
= push_template_decl (decl1
);
12358 /* Record the decl so that the function name is defined.
12359 If we already have a decl for this name, and it is a FUNCTION_DECL,
12360 use the old decl. */
12361 if (!processing_template_decl
&& pre_parsed_p
== 0)
12363 /* A specialization is not used to guide overload resolution. */
12364 if ((flag_guiding_decls
12365 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12366 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12367 decl1
= pushdecl (decl1
);
12370 /* We need to set the DECL_CONTEXT. */
12371 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12372 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12373 /* And make sure we have enough default args. */
12374 check_default_args (decl1
);
12376 DECL_MAIN_VARIANT (decl1
) = decl1
;
12377 fntype
= TREE_TYPE (decl1
);
12380 current_function_decl
= decl1
;
12382 if (DECL_INTERFACE_KNOWN (decl1
))
12384 tree ctx
= hack_decl_function_context (decl1
);
12386 if (DECL_NOT_REALLY_EXTERN (decl1
))
12387 DECL_EXTERNAL (decl1
) = 0;
12389 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12390 && TREE_PUBLIC (ctx
))
12391 /* This is a function in a local class in an extern inline
12393 comdat_linkage (decl1
);
12395 /* If this function belongs to an interface, it is public.
12396 If it belongs to someone else's interface, it is also external.
12397 It doesn't matter whether it's inline or not. */
12398 else if (interface_unknown
== 0
12399 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12400 || flag_alt_external_templates
))
12402 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12403 || processing_template_decl
)
12404 DECL_EXTERNAL (decl1
)
12406 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12408 DECL_EXTERNAL (decl1
) = 0;
12409 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12410 DECL_INTERFACE_KNOWN (decl1
) = 1;
12414 /* This is a definition, not a reference.
12415 So clear DECL_EXTERNAL. */
12416 DECL_EXTERNAL (decl1
) = 0;
12418 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12419 && ! DECL_INTERFACE_KNOWN (decl1
)
12420 /* Don't try to defer nested functions for now. */
12421 && ! hack_decl_function_context (decl1
))
12422 DECL_DEFER_OUTPUT (decl1
) = 1;
12424 DECL_INTERFACE_KNOWN (decl1
) = 1;
12427 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12429 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12430 TREE_TYPE (decl1
) = fntype
12431 = build_function_type (TREE_TYPE (fntype
),
12432 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12433 current_function_parms
= TREE_CHAIN (current_function_parms
);
12434 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12437 restype
= TREE_TYPE (fntype
);
12441 /* If we're compiling a friend function, neither of the variables
12442 current_class_ptr nor current_class_type will have values. */
12443 if (! doing_friend
)
12445 /* We know that this was set up by `grokclassfn'.
12446 We do not wait until `store_parm_decls', since evil
12447 parse errors may never get us to that point. Here
12448 we keep the consistency between `current_class_type'
12449 and `current_class_ptr'. */
12450 tree t
= current_function_parms
;
12452 my_friendly_assert (t
!= NULL_TREE
12453 && TREE_CODE (t
) == PARM_DECL
, 162);
12455 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12457 int i
= suspend_momentary ();
12459 /* Fool build_indirect_ref. */
12460 current_class_ptr
= NULL_TREE
;
12461 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12462 current_class_ptr
= t
;
12463 resume_momentary (i
);
12466 /* We're having a signature pointer here. */
12467 current_class_ref
= current_class_ptr
= t
;
12473 if (!DECL_STATIC_FUNCTION_P (decl1
))
12474 push_memoized_context (NULL_TREE
, 1);
12475 current_class_ptr
= current_class_ref
= NULL_TREE
;
12479 current_binding_level
->parm_flag
= 1;
12481 GNU_xref_function (decl1
, current_function_parms
);
12484 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12485 make_function_rtl (decl1
);
12487 /* Promote the value to int before returning it. */
12488 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12489 restype
= type_promotes_to (restype
);
12491 /* If this fcn was already referenced via a block-scope `extern' decl
12492 (or an implicit decl), propagate certain information about the usage. */
12493 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12494 TREE_ADDRESSABLE (decl1
) = 1;
12496 if (DECL_RESULT (decl1
) == NULL_TREE
)
12498 DECL_RESULT (decl1
)
12499 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12500 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12501 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12504 /* Allocate further tree nodes temporarily during compilation
12505 of this function only. Tiemann moved up here from bottom of fn. */
12506 /* If this is a nested function, then we must continue to allocate RTL
12507 on the permanent obstack in case we need to inline it later. */
12508 if (! hack_decl_function_context (decl1
))
12509 temporary_allocation ();
12511 if (processing_template_decl
)
12513 ++minimal_parse_mode
;
12514 last_tree
= DECL_SAVED_TREE (decl1
)
12515 = build_nt (EXPR_STMT
, void_zero_node
);
12520 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12521 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12523 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12524 ctor_label
= NULL_TREE
;
12528 dtor_label
= NULL_TREE
;
12529 if (DECL_CONSTRUCTOR_P (decl1
))
12530 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12536 /* Called after store_parm_decls for a function-try-block. We need to update
12537 last_parm_cleanup_insn so that the base initializers for a constructor
12538 are run within this block, not before it. */
12541 expand_start_early_try_stmts ()
12543 expand_start_try_stmts ();
12544 last_parm_cleanup_insn
= get_last_insn ();
12547 /* Store the parameter declarations into the current function declaration.
12548 This is called after parsing the parameter declarations, before
12549 digesting the body of the function.
12551 Also install to binding contour return value identifier, if any. */
12554 store_parm_decls ()
12556 register tree fndecl
= current_function_decl
;
12557 register tree parm
;
12558 int parms_have_cleanups
= 0;
12559 tree cleanups
= NULL_TREE
;
12561 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12562 tree specparms
= current_function_parms
;
12564 /* This is a list of types declared among parms in a prototype. */
12565 tree parmtags
= current_function_parm_tags
;
12567 /* This is a chain of any other decls that came in among the parm
12568 declarations. If a parm is declared with enum {foo, bar} x;
12569 then CONST_DECLs for foo and bar are put here. */
12570 tree nonparms
= NULL_TREE
;
12572 if (toplevel_bindings_p ())
12573 fatal ("parse errors have confused me too much");
12575 /* Initialize RTL machinery. */
12576 init_function_start (fndecl
, input_filename
, lineno
);
12578 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12579 declare_function_name ();
12581 /* Create a binding level for the parms. */
12582 expand_start_bindings (0);
12584 if (specparms
!= NULL_TREE
)
12586 /* This case is when the function was defined with an ANSI prototype.
12587 The parms already have decls, so we need not do anything here
12588 except record them as in effect
12589 and complain if any redundant old-style parm decls were written. */
12591 register tree next
;
12593 /* Must clear this because it might contain TYPE_DECLs declared
12595 storedecls (NULL_TREE
);
12597 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12599 next
= TREE_CHAIN (parm
);
12600 if (TREE_CODE (parm
) == PARM_DECL
)
12603 if (DECL_NAME (parm
) == NULL_TREE
)
12607 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12608 cp_error ("parameter `%D' declared void", parm
);
12611 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12612 A parameter is assumed not to have any side effects.
12613 If this should change for any reason, then this
12614 will have to wrap the bashed reference type in a save_expr.
12616 Also, if the parameter type is declared to be an X
12617 and there is an X(X&) constructor, we cannot lay it
12618 into the stack (any more), so we make this parameter
12619 look like it is really of reference type. Functions
12620 which pass parameters to this function will know to
12621 create a temporary in their frame, and pass a reference
12624 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12625 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12626 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12630 if (! processing_template_decl
12631 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12633 expand_decl (parm
);
12634 parms_have_cleanups
= 1;
12636 /* Keep track of the cleanups. */
12637 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12642 /* If we find an enum constant or a type tag,
12643 put it aside for the moment. */
12644 TREE_CHAIN (parm
) = NULL_TREE
;
12645 nonparms
= chainon (nonparms
, parm
);
12649 /* Get the decls in their original chain order
12650 and record in the function. This is all and only the
12651 PARM_DECLs that were pushed into scope by the loop above. */
12652 DECL_ARGUMENTS (fndecl
) = getdecls ();
12654 storetags (chainon (parmtags
, gettags ()));
12657 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12659 /* Now store the final chain of decls for the arguments
12660 as the decl-chain of the current lexical scope.
12661 Put the enumerators in as well, at the front so that
12662 DECL_ARGUMENTS is not modified. */
12664 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12666 /* Initialize the RTL code for the function. */
12667 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12668 if (! processing_template_decl
)
12669 expand_function_start (fndecl
, parms_have_cleanups
);
12671 current_function_parms_stored
= 1;
12673 /* If this function is `main', emit a call to `__main'
12674 to run global initializers, etc. */
12675 if (DECL_MAIN_P (fndecl
))
12676 expand_main_function ();
12678 /* Now that we have initialized the parms, we can start their
12679 cleanups. We cannot do this before, since expand_decl_cleanup
12680 should not be called before the parm can be used. */
12682 && ! processing_template_decl
)
12684 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12686 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12687 cp_error ("parser lost in parsing declaration of `%D'",
12688 TREE_PURPOSE (cleanups
));
12692 /* Create a binding contour which can be used to catch
12693 cleanup-generated temporaries. Also, if the return value needs or
12694 has initialization, deal with that now. */
12695 if (parms_have_cleanups
)
12698 expand_start_bindings (0);
12701 if (! processing_template_decl
&& flag_exceptions
)
12703 /* Do the starting of the exception specifications, if we have any. */
12704 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12705 expand_start_eh_spec ();
12708 last_parm_cleanup_insn
= get_last_insn ();
12709 last_dtor_insn
= get_last_insn ();
12712 /* Bind a name and initialization to the return value of
12713 the current function. */
12716 store_return_init (return_id
, init
)
12717 tree return_id
, init
;
12719 tree decl
= DECL_RESULT (current_function_decl
);
12722 /* Give this error as many times as there are occurrences,
12723 so that users can use Emacs compilation buffers to find
12724 and fix all such places. */
12725 pedwarn ("ANSI C++ does not permit named return values");
12727 if (return_id
!= NULL_TREE
)
12729 if (DECL_NAME (decl
) == NULL_TREE
)
12731 DECL_NAME (decl
) = return_id
;
12732 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12735 cp_error ("return identifier `%D' already in place", decl
);
12738 /* Can't let this happen for constructors. */
12739 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12741 error ("can't redefine default return value for constructors");
12745 /* If we have a named return value, put that in our scope as well. */
12746 if (DECL_NAME (decl
) != NULL_TREE
)
12748 /* If this named return value comes in a register,
12749 put it in a pseudo-register. */
12750 if (DECL_REGISTER (decl
))
12752 original_result_rtx
= DECL_RTL (decl
);
12753 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12756 /* Let `cp_finish_decl' know that this initializer is ok. */
12757 DECL_INITIAL (decl
) = init
;
12760 if (minimal_parse_mode
)
12761 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12762 copy_to_permanent (init
)));
12764 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12769 /* Finish up a function declaration and compile that function
12770 all the way to assembler language output. The free the storage
12771 for the function definition.
12773 This is called after parsing the body of the function definition.
12774 LINENO is the current line number.
12776 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12777 (and expand_end_bindings) must be made to take care of the binding
12778 contour for the base initializers. This is only relevant for
12781 NESTED is nonzero if we were in the middle of compiling another function
12782 when we started on this one. */
12785 finish_function (lineno
, call_poplevel
, nested
)
12790 register tree fndecl
= current_function_decl
;
12791 tree fntype
, ctype
= NULL_TREE
;
12792 rtx last_parm_insn
, insns
;
12793 /* Label to use if this function is supposed to return a value. */
12794 tree no_return_label
= NULL_TREE
;
12795 tree decls
= NULL_TREE
;
12797 /* When we get some parse errors, we can end up without a
12798 current_function_decl, so cope. */
12799 if (fndecl
== NULL_TREE
)
12802 if (! nested
&& function_depth
> 1)
12805 fntype
= TREE_TYPE (fndecl
);
12807 /* TREE_READONLY (fndecl) = 1;
12808 This caused &foo to be of type ptr-to-const-function
12809 which then got a warning when stored in a ptr-to-function variable. */
12811 /* This happens on strange parse errors. */
12812 if (! current_function_parms_stored
)
12815 store_parm_decls ();
12818 if (processing_template_decl
)
12820 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12822 decls
= getdecls ();
12823 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12824 poplevel (decls
!= NULL_TREE
, 0, 0);
12829 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12831 tree ttype
= target_type (fntype
);
12834 if (IS_AGGR_TYPE (ttype
))
12835 /* Let debugger know it should output info for this type. */
12836 note_debug_info_needed (ttype
);
12838 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12840 ttype
= target_type (TREE_TYPE (parmdecl
));
12841 if (IS_AGGR_TYPE (ttype
))
12842 /* Let debugger know it should output info for this type. */
12843 note_debug_info_needed (ttype
);
12847 /* Clean house because we will need to reorder insns here. */
12848 do_pending_stack_adjust ();
12852 tree binfo
= TYPE_BINFO (current_class_type
);
12853 tree cond
= integer_one_node
;
12855 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12857 int ok_to_optimize_dtor
= 0;
12858 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12860 if (current_function_assigns_this
)
12861 cond
= build (NE_EXPR
, boolean_type_node
,
12862 current_class_ptr
, integer_zero_node
);
12865 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12867 /* If this destructor is empty, then we don't need to check
12868 whether `this' is NULL in some cases. */
12869 if ((flag_this_is_variable
& 1) == 0)
12870 ok_to_optimize_dtor
= 1;
12871 else if (empty_dtor
)
12872 ok_to_optimize_dtor
12873 = (n_baseclasses
== 0
12874 || (n_baseclasses
== 1
12875 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12878 /* These initializations might go inline. Protect
12879 the binding level of the parms. */
12881 expand_start_bindings (0);
12883 if (current_function_assigns_this
)
12885 current_function_assigns_this
= 0;
12886 current_function_just_assigned_this
= 0;
12889 /* Generate the code to call destructor on base class.
12890 If this destructor belongs to a class with virtual
12891 functions, then set the virtual function table
12892 pointer to represent the type of our base class. */
12894 /* This side-effect makes call to `build_delete' generate the
12895 code we have to have at the end of this destructor. */
12896 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12898 /* These are two cases where we cannot delegate deletion. */
12899 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12900 || TYPE_GETS_REG_DELETE (current_class_type
))
12901 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12902 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12904 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12905 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12907 /* If we did not assign to this, then `this' is non-zero at
12908 the end of a destructor. As a special optimization, don't
12909 emit test if this is an empty destructor. If it does nothing,
12910 it does nothing. If it calls a base destructor, the base
12911 destructor will perform the test. */
12913 if (exprstmt
!= error_mark_node
12914 && (TREE_CODE (exprstmt
) != NOP_EXPR
12915 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12916 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12918 expand_label (dtor_label
);
12919 if (cond
!= integer_one_node
)
12920 expand_start_cond (cond
, 0);
12921 if (exprstmt
!= void_zero_node
)
12922 /* Don't call `expand_expr_stmt' if we're not going to do
12923 anything, since -Wall will give a diagnostic. */
12924 expand_expr_stmt (exprstmt
);
12926 /* Run destructor on all virtual baseclasses. */
12927 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12929 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12930 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12931 in_charge_node
, integer_two_node
), 0);
12934 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12936 tree vb
= get_vbase
12937 (BINFO_TYPE (vbases
),
12938 TYPE_BINFO (current_class_type
));
12940 (build_scoped_method_call
12941 (current_class_ref
, vb
, dtor_identifier
,
12942 build_expr_list (NULL_TREE
, integer_zero_node
)));
12944 vbases
= TREE_CHAIN (vbases
);
12946 expand_end_cond ();
12949 do_pending_stack_adjust ();
12950 if (cond
!= integer_one_node
)
12951 expand_end_cond ();
12954 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
12956 virtual_size
= c_sizeof (current_class_type
);
12958 /* At the end, call delete if that's what's requested. */
12960 /* FDIS sez: At the point of definition of a virtual destructor
12961 (including an implicit definition), non-placement operator
12962 delete shall be looked up in the scope of the destructor's
12963 class and if found shall be accessible and unambiguous.
12965 This is somewhat unclear, but I take it to mean that if the
12966 class only defines placement deletes we don't do anything here.
12967 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
12968 for us if they ever try to delete one of these. */
12970 if (TYPE_GETS_REG_DELETE (current_class_type
)
12971 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12972 exprstmt
= build_op_delete_call
12973 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
12974 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
12976 exprstmt
= NULL_TREE
;
12980 cond
= build (BIT_AND_EXPR
, integer_type_node
,
12981 in_charge_node
, integer_one_node
);
12982 expand_start_cond (cond
, 0);
12983 expand_expr_stmt (exprstmt
);
12984 expand_end_cond ();
12987 /* End of destructor. */
12988 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
12989 poplevel (2, 0, 0); /* XXX change to 1 */
12991 /* Back to the top of destructor. */
12992 /* Don't execute destructor code if `this' is NULL. */
12996 /* If the dtor is empty, and we know there is not possible way we
12997 could use any vtable entries, before they are possibly set by
12998 a base class dtor, we don't have to setup the vtables, as we
12999 know that any base class dtoring will set up any vtables it
13000 needs. We avoid MI, because one base class dtor can do a
13001 virtual dispatch to an overridden function that would need to
13002 have a non-related vtable set up, we cannot avoid setting up
13003 vtables in that case. We could change this to see if there is
13004 just one vtable. */
13005 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13007 /* Make all virtual function table pointers in non-virtual base
13008 classes point to CURRENT_CLASS_TYPE's virtual function
13010 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13012 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13013 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13016 if (! ok_to_optimize_dtor
)
13018 cond
= build_binary_op (NE_EXPR
,
13019 current_class_ptr
, integer_zero_node
, 1);
13020 expand_start_cond (cond
, 0);
13023 insns
= get_insns ();
13026 last_parm_insn
= get_first_nonparm_insn ();
13027 if (last_parm_insn
== NULL_RTX
)
13028 last_parm_insn
= get_last_insn ();
13030 last_parm_insn
= previous_insn (last_parm_insn
);
13032 emit_insns_after (insns
, last_parm_insn
);
13034 if (! ok_to_optimize_dtor
)
13035 expand_end_cond ();
13037 else if (current_function_assigns_this
)
13039 /* Does not need to call emit_base_init, because
13040 that is done (if needed) just after assignment to this
13043 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13045 end_protect_partials ();
13046 expand_label (ctor_label
);
13047 ctor_label
= NULL_TREE
;
13051 decls
= getdecls ();
13052 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13053 poplevel (decls
!= NULL_TREE
, 0, 0);
13055 /* c_expand_return knows to return 'this' from a constructor. */
13056 c_expand_return (NULL_TREE
);
13058 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13059 && return_label
!= NULL_RTX
)
13060 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13062 current_function_assigns_this
= 0;
13063 current_function_just_assigned_this
= 0;
13064 base_init_expr
= NULL_TREE
;
13066 else if (DECL_CONSTRUCTOR_P (fndecl
))
13068 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13069 /* Allow constructor for a type to get a new instance of the object
13070 using `build_new'. */
13071 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13072 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13074 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13076 if (flag_this_is_variable
> 0)
13078 cond
= build_binary_op (EQ_EXPR
,
13079 current_class_ptr
, integer_zero_node
, 1);
13080 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13081 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13084 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13088 if (flag_this_is_variable
> 0)
13090 expand_start_cond (cond
, 0);
13091 expand_expr_stmt (thenclause
);
13092 expand_end_cond ();
13095 /* Emit insns from `emit_base_init' which sets up virtual
13096 function table pointer(s). */
13097 if (base_init_expr
)
13099 expand_expr_stmt (base_init_expr
);
13100 base_init_expr
= NULL_TREE
;
13103 insns
= get_insns ();
13106 /* This is where the body of the constructor begins. */
13108 emit_insns_after (insns
, last_parm_cleanup_insn
);
13110 end_protect_partials ();
13112 /* This is where the body of the constructor ends. */
13113 expand_label (ctor_label
);
13114 ctor_label
= NULL_TREE
;
13118 decls
= getdecls ();
13119 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13120 poplevel (decls
!= NULL_TREE
, 1, 0);
13123 /* c_expand_return knows to return 'this' from a constructor. */
13124 c_expand_return (NULL_TREE
);
13126 current_function_assigns_this
= 0;
13127 current_function_just_assigned_this
= 0;
13129 else if (DECL_MAIN_P (fndecl
))
13131 /* Make it so that `main' always returns 0 by default. */
13133 c_expand_return (integer_one_node
);
13135 c_expand_return (integer_zero_node
);
13138 else if (return_label
!= NULL_RTX
13139 && current_function_return_value
== NULL_TREE
13140 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13141 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13143 if (flag_exceptions
)
13144 expand_exception_blocks ();
13146 /* If this function is supposed to return a value, ensure that
13147 we do not fall into the cleanups by mistake. The end of our
13148 function will look like this:
13150 user code (may have return stmt somewhere)
13151 goto no_return_label
13156 NOTE_INSN_FUNCTION_END
13160 If the user omits a return stmt in the USER CODE section, we
13161 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13162 Otherwise, we won't. */
13163 if (no_return_label
)
13165 DECL_CONTEXT (no_return_label
) = fndecl
;
13166 DECL_INITIAL (no_return_label
) = error_mark_node
;
13167 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13168 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13169 expand_goto (no_return_label
);
13174 /* Remove the binding contour which is used
13175 to catch cleanup-generated temporaries. */
13176 expand_end_bindings (0, 0, 0);
13177 poplevel (0, 0, 0);
13179 /* Emit label at beginning of cleanup code for parameters. */
13180 emit_label (cleanup_label
);
13183 /* Get return value into register if that's where it's supposed to be. */
13184 if (original_result_rtx
)
13185 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13187 /* Finish building code that will trigger warnings if users forget
13188 to make their functions return values. */
13189 if (no_return_label
|| cleanup_label
)
13190 emit_jump (return_label
);
13191 if (no_return_label
)
13193 /* We don't need to call `expand_*_return' here because we
13194 don't need any cleanups here--this path of code is only
13195 for error checking purposes. */
13196 expand_label (no_return_label
);
13199 /* Generate rtl for function exit. */
13200 expand_function_end (input_filename
, lineno
, 1);
13203 /* This must come after expand_function_end because cleanups might
13204 have declarations (from inline functions) that need to go into
13205 this function's blocks. */
13206 if (current_binding_level
->parm_flag
!= 1)
13207 my_friendly_abort (122);
13208 poplevel (1, 0, 1);
13210 /* Reset scope for C++: if we were in the scope of a class,
13211 then when we finish this function, we are not longer so.
13212 This cannot be done until we know for sure that no more
13213 class members will ever be referenced in this function
13214 (i.e., calls to destructors). */
13215 if (current_class_name
)
13217 ctype
= current_class_type
;
13218 pop_nested_class (1);
13221 pop_memoized_context (1);
13223 /* Must mark the RESULT_DECL as being in this function. */
13224 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13226 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13227 to the FUNCTION_DECL node itself. */
13228 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13230 if (! processing_template_decl
)
13232 int saved_flag_keep_inline_functions
=
13233 flag_keep_inline_functions
;
13235 /* So we can tell if jump_optimize sets it to 1. */
13238 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13239 && hack_decl_function_context (fndecl
))
13240 /* Trick rest_of_compilation into not deferring output of this
13241 function, even if it is inline, since the rtl_obstack for
13242 this function is the function_obstack of the enclosing
13243 function and will be deallocated when the enclosing
13244 function is gone. See save_tree_status. */
13245 flag_keep_inline_functions
= 1;
13247 /* Run the optimizers and output the assembler code for this
13250 if (DECL_ARTIFICIAL (fndecl
))
13252 /* Do we really *want* to inline this synthesized method? */
13254 int save_fif
= flag_inline_functions
;
13255 flag_inline_functions
= 1;
13257 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13258 will check our size. */
13259 DECL_INLINE (fndecl
) = 0;
13261 rest_of_compilation (fndecl
);
13262 flag_inline_functions
= save_fif
;
13265 rest_of_compilation (fndecl
);
13267 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13269 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13271 /* Set DECL_EXTERNAL so that assemble_external will be called as
13272 necessary. We'll clear it again in finish_file. */
13273 if (! DECL_EXTERNAL (fndecl
))
13274 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13275 DECL_EXTERNAL (fndecl
) = 1;
13276 mark_inline_for_output (fndecl
);
13279 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13280 note_debug_info_needed (ctype
);
13282 current_function_returns_null
|= can_reach_end
;
13284 /* Since we don't normally go through c_expand_return for constructors,
13285 this normally gets the wrong value.
13286 Also, named return values have their return codes emitted after
13287 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13288 if (DECL_CONSTRUCTOR_P (fndecl
)
13289 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13290 current_function_returns_null
= 0;
13292 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13293 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13294 else if ((warn_return_type
|| pedantic
)
13295 && current_function_returns_null
13296 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13298 /* If this function returns non-void and control can drop through,
13300 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13302 /* With just -W, complain only if function returns both with
13303 and without a value. */
13304 else if (extra_warnings
13305 && current_function_returns_value
&& current_function_returns_null
)
13306 warning ("this function may return with or without a value");
13311 /* Free all the tree nodes making up this function. */
13312 /* Switch back to allocating nodes permanently
13313 until we start another function. */
13314 if (processing_template_decl
)
13316 --minimal_parse_mode
;
13317 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13321 permanent_allocation (1);
13323 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13327 /* Stop pointing to the local nodes about to be freed. */
13328 /* But DECL_INITIAL must remain nonzero so we know this
13329 was an actual function definition. */
13330 DECL_INITIAL (fndecl
) = error_mark_node
;
13331 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13332 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13335 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13336 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13337 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13338 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13342 /* Let the error reporting routines know that we're outside a
13343 function. For a nested function, this value is used in
13344 pop_cp_function_context and then reset via pop_function_context. */
13345 current_function_decl
= NULL_TREE
;
13348 named_label_uses
= NULL
;
13349 current_class_ptr
= NULL_TREE
;
13350 current_class_ref
= NULL_TREE
;
13353 /* Create the FUNCTION_DECL for a function definition.
13354 LINE1 is the line number that the definition absolutely begins on.
13355 LINE2 is the line number that the name of the function appears on.
13356 DECLSPECS and DECLARATOR are the parts of the declaration;
13357 they describe the return type and the name of the function,
13358 but twisted together in a fashion that parallels the syntax of C.
13360 This function creates a binding context for the function body
13361 as well as setting up the FUNCTION_DECL in current_function_decl.
13363 Returns a FUNCTION_DECL on success.
13365 If the DECLARATOR is not suitable for a function (it defines a datum
13366 instead), we return 0, which tells yyparse to report a parse error.
13368 May return void_type_node indicating that this method is actually
13369 a friend. See grokfield for more details.
13371 Came here with a `.pushlevel' .
13373 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13374 CHANGES TO CODE IN `grokfield'. */
13377 start_method (declspecs
, declarator
)
13378 tree declarator
, declspecs
;
13380 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13383 /* Something too ugly to handle. */
13384 if (fndecl
== NULL_TREE
)
13387 /* Pass friends other than inline friend functions back. */
13388 if (fndecl
== void_type_node
)
13391 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13392 /* Not a function, tell parser to report parse error. */
13395 if (IS_SIGNATURE (current_class_type
))
13396 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13398 if (DECL_IN_AGGR_P (fndecl
))
13400 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13402 if (DECL_CONTEXT (fndecl
)
13403 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13404 cp_error ("`%D' is already defined in class %s", fndecl
,
13405 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13407 return void_type_node
;
13410 DECL_THIS_INLINE (fndecl
) = 1;
13412 if (flag_default_inline
)
13413 DECL_INLINE (fndecl
) = 1;
13415 /* We process method specializations in finish_struct_1. */
13416 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13417 fndecl
= push_template_decl (fndecl
);
13419 /* We read in the parameters on the maybepermanent_obstack,
13420 but we won't be getting back to them until after we
13421 may have clobbered them. So the call to preserve_data
13422 will keep them safe. */
13425 if (! DECL_FRIEND_P (fndecl
))
13427 if (TREE_CHAIN (fndecl
))
13429 fndecl
= copy_node (fndecl
);
13430 TREE_CHAIN (fndecl
) = NULL_TREE
;
13433 if (DECL_CONSTRUCTOR_P (fndecl
))
13435 if (! grok_ctor_properties (current_class_type
, fndecl
))
13436 return void_type_node
;
13438 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13439 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13442 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13444 /* Make a place for the parms */
13446 current_binding_level
->parm_flag
= 1;
13448 DECL_IN_AGGR_P (fndecl
) = 1;
13452 /* Go through the motions of finishing a function definition.
13453 We don't compile this method until after the whole class has
13456 FINISH_METHOD must return something that looks as though it
13457 came from GROKFIELD (since we are defining a method, after all).
13459 This is called after parsing the body of the function definition.
13460 STMTS is the chain of statements that makes up the function body.
13462 DECL is the ..._DECL that `start_method' provided. */
13465 finish_method (decl
)
13468 register tree fndecl
= decl
;
13471 register tree link
;
13473 if (decl
== void_type_node
)
13476 old_initial
= DECL_INITIAL (fndecl
);
13478 /* Undo the level for the parms (from start_method).
13479 This is like poplevel, but it causes nothing to be
13480 saved. Saving information here confuses symbol-table
13481 output routines. Besides, this information will
13482 be correctly output when this method is actually
13485 /* Clear out the meanings of the local variables of this level;
13486 also record in each decl which block it belongs to. */
13488 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13490 if (DECL_NAME (link
) != NULL_TREE
)
13491 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13492 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13493 DECL_CONTEXT (link
) = NULL_TREE
;
13496 /* Restore all name-meanings of the outer levels
13497 that were shadowed by this level. */
13499 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13500 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13501 for (link
= current_binding_level
->class_shadowed
;
13502 link
; link
= TREE_CHAIN (link
))
13503 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13504 for (link
= current_binding_level
->type_shadowed
;
13505 link
; link
= TREE_CHAIN (link
))
13506 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13508 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13509 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13510 current_binding_level
->parm_flag
,
13511 current_binding_level
->keep
);
13513 poplevel (0, 0, 0);
13515 DECL_INITIAL (fndecl
) = old_initial
;
13517 /* We used to check if the context of FNDECL was different from
13518 current_class_type as another way to get inside here. This didn't work
13519 for String.cc in libg++. */
13520 if (DECL_FRIEND_P (fndecl
))
13522 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13523 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13524 decl
= void_type_node
;
13530 /* Called when a new struct TYPE is defined.
13531 If this structure or union completes the type of any previous
13532 variable declaration, lay it out and output its rtl. */
13535 hack_incomplete_structures (type
)
13540 if (current_binding_level
->incomplete
== NULL_TREE
)
13543 if (!type
) /* Don't do this for class templates. */
13546 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13548 tree decl
= TREE_VALUE (*list
);
13549 if ((decl
&& TREE_TYPE (decl
) == type
)
13550 || (TREE_TYPE (decl
)
13551 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13552 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13554 int toplevel
= toplevel_bindings_p ();
13555 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13556 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13557 layout_type (TREE_TYPE (decl
));
13558 layout_decl (decl
, 0);
13559 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13563 expand_decl (decl
);
13564 cleanup
= maybe_build_cleanup (decl
);
13565 expand_decl_init (decl
);
13566 if (! expand_decl_cleanup (decl
, cleanup
))
13567 cp_error ("parser lost in parsing declaration of `%D'",
13570 *list
= TREE_CHAIN (*list
);
13573 list
= &TREE_CHAIN (*list
);
13577 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13578 See build_delete for information about AUTO_DELETE.
13580 Don't build these on the momentary obstack; they must live
13581 the life of the binding contour. */
13584 maybe_build_cleanup_1 (decl
, auto_delete
)
13585 tree decl
, auto_delete
;
13587 tree type
= TREE_TYPE (decl
);
13588 if (TYPE_NEEDS_DESTRUCTOR (type
))
13590 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13593 if (TREE_CODE (decl
) != PARM_DECL
)
13594 temp
= suspend_momentary ();
13596 if (TREE_CODE (type
) == ARRAY_TYPE
)
13600 mark_addressable (decl
);
13601 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13604 /* Optimize for space over speed here. */
13605 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13606 || flag_expensive_optimizations
)
13607 flags
|= LOOKUP_NONVIRTUAL
;
13609 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13611 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13612 && ! TYPE_HAS_DESTRUCTOR (type
))
13613 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13614 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13616 if (TREE_CODE (decl
) != PARM_DECL
)
13617 resume_momentary (temp
);
13624 /* If DECL is of a type which needs a cleanup, build that cleanup
13625 here. The cleanup does free the storage with a call to delete. */
13628 maybe_build_cleanup_and_delete (decl
)
13631 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13634 /* If DECL is of a type which needs a cleanup, build that cleanup
13635 here. The cleanup does not free the storage with a call a delete. */
13638 maybe_build_cleanup (decl
)
13641 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13644 /* Expand a C++ expression at the statement level.
13645 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13646 The C++ type checker should get all of these out when
13647 expressions are combined with other, type-providing, expressions,
13648 leaving only orphan expressions, such as:
13650 &class::bar; / / takes its address, but does nothing with it. */
13653 cplus_expand_expr_stmt (exp
)
13656 if (processing_template_decl
)
13658 add_tree (build_min_nt (EXPR_STMT
, exp
));
13662 /* Arrange for all temps to disappear. */
13663 expand_start_target_temps ();
13665 if (TREE_TYPE (exp
) == unknown_type_node
)
13667 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13668 error ("address of overloaded function with no contextual type information");
13669 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13670 warning ("useless reference to a member function name, did you forget the ()?");
13674 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13676 cp_warning ("reference, not call, to function `%D'", exp
);
13677 warning ("at this point in file");
13681 /* We should do this eventually, but right now this causes regex.o from
13682 libg++ to miscompile, and tString to core dump. */
13683 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13686 /* Strip unused implicit INDIRECT_REFs of references. */
13687 if (TREE_CODE (exp
) == INDIRECT_REF
13688 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13689 exp
= TREE_OPERAND (exp
, 0);
13691 /* If we don't do this, we end up down inside expand_expr
13692 trying to do TYPE_MODE on the ERROR_MARK, and really
13693 go outside the bounds of the type. */
13694 if (exp
!= error_mark_node
)
13695 expand_expr_stmt (break_out_cleanups (exp
));
13698 /* Clean up any pending cleanups. This happens when a function call
13699 returns a cleanup-needing value that nobody uses. */
13700 expand_end_target_temps ();
13703 /* When a stmt has been parsed, this function is called.
13705 Currently, this function only does something within a
13706 constructor's scope: if a stmt has just assigned to this,
13707 and we are in a derived class, we call `emit_base_init'. */
13712 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13715 if (current_function_assigns_this
13716 || ! current_function_just_assigned_this
)
13718 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13720 /* Constructors must wait until we are out of control
13721 zones before calling base constructors. */
13722 if (cond_stack
|| loop_stack
|| case_stack
)
13724 expand_expr_stmt (base_init_expr
);
13725 check_base_init (current_class_type
);
13727 current_function_assigns_this
= 1;
13730 /* Change a static member function definition into a FUNCTION_TYPE, instead
13731 of the METHOD_TYPE that we create when it's originally parsed.
13733 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13734 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13735 other decls. Either pass the addresses of local variables or NULL. */
13738 revert_static_member_fn (decl
, fn
, argtypes
)
13739 tree
*decl
, *fn
, *argtypes
;
13742 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13743 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13745 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13746 cp_error ("static member function `%#D' declared const", *decl
);
13747 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13748 cp_error ("static member function `%#D' declared volatile", *decl
);
13750 args
= TREE_CHAIN (args
);
13751 tmp
= build_function_type (TREE_TYPE (function
), args
);
13752 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13753 TYPE_VOLATILE (function
));
13754 tmp
= build_exception_variant (tmp
,
13755 TYPE_RAISES_EXCEPTIONS (function
));
13756 TREE_TYPE (*decl
) = tmp
;
13757 if (DECL_ARGUMENTS (*decl
))
13758 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13759 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13767 id_in_current_class (id
)
13770 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13777 int warn_about_return_type
;
13779 int just_assigned_this
;
13781 int temp_name_counter
;
13783 tree shadowed_labels
;
13786 rtx last_dtor_insn
;
13787 rtx last_parm_cleanup_insn
;
13788 tree base_init_list
;
13789 tree member_init_list
;
13790 tree base_init_expr
;
13791 tree current_class_ptr
;
13792 tree current_class_ref
;
13794 struct cp_function
*next
;
13795 struct binding_level
*binding_level
;
13796 int static_labelno
;
13799 static struct cp_function
*cp_function_chain
;
13801 extern int temp_name_counter
;
13803 /* Save and reinitialize the variables
13804 used during compilation of a C++ function. */
13807 push_cp_function_context (context
)
13810 struct cp_function
*p
13811 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13813 push_function_context_to (context
);
13815 p
->next
= cp_function_chain
;
13816 cp_function_chain
= p
;
13818 p
->named_labels
= named_labels
;
13819 p
->shadowed_labels
= shadowed_labels
;
13820 p
->returns_value
= current_function_returns_value
;
13821 p
->returns_null
= current_function_returns_null
;
13822 p
->warn_about_return_type
= warn_about_return_type
;
13823 p
->binding_level
= current_binding_level
;
13824 p
->ctor_label
= ctor_label
;
13825 p
->dtor_label
= dtor_label
;
13826 p
->last_dtor_insn
= last_dtor_insn
;
13827 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13828 p
->assigns_this
= current_function_assigns_this
;
13829 p
->just_assigned_this
= current_function_just_assigned_this
;
13830 p
->parms_stored
= current_function_parms_stored
;
13831 p
->result_rtx
= original_result_rtx
;
13832 p
->base_init_expr
= base_init_expr
;
13833 p
->temp_name_counter
= temp_name_counter
;
13834 p
->base_init_list
= current_base_init_list
;
13835 p
->member_init_list
= current_member_init_list
;
13836 p
->current_class_ptr
= current_class_ptr
;
13837 p
->current_class_ref
= current_class_ref
;
13838 p
->static_labelno
= static_labelno
;
13841 /* Restore the variables used during compilation of a C++ function. */
13844 pop_cp_function_context (context
)
13847 struct cp_function
*p
= cp_function_chain
;
13850 /* Bring back all the labels that were shadowed. */
13851 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13852 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13853 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13854 TREE_VALUE (link
));
13856 pop_function_context_from (context
);
13858 cp_function_chain
= p
->next
;
13860 named_labels
= p
->named_labels
;
13861 shadowed_labels
= p
->shadowed_labels
;
13862 current_function_returns_value
= p
->returns_value
;
13863 current_function_returns_null
= p
->returns_null
;
13864 warn_about_return_type
= p
->warn_about_return_type
;
13865 current_binding_level
= p
->binding_level
;
13866 ctor_label
= p
->ctor_label
;
13867 dtor_label
= p
->dtor_label
;
13868 last_dtor_insn
= p
->last_dtor_insn
;
13869 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13870 current_function_assigns_this
= p
->assigns_this
;
13871 current_function_just_assigned_this
= p
->just_assigned_this
;
13872 current_function_parms_stored
= p
->parms_stored
;
13873 original_result_rtx
= p
->result_rtx
;
13874 base_init_expr
= p
->base_init_expr
;
13875 temp_name_counter
= p
->temp_name_counter
;
13876 current_base_init_list
= p
->base_init_list
;
13877 current_member_init_list
= p
->member_init_list
;
13878 current_class_ptr
= p
->current_class_ptr
;
13879 current_class_ref
= p
->current_class_ref
;
13880 static_labelno
= p
->static_labelno
;
13888 return function_depth
!= 0;