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
)
3506 tree bindings
= binding_for_name (name
, current_namespace
);
3508 if (BINDING_VALUE (bindings
) != NULL_TREE
3509 && (DECL_EXTERNAL (BINDING_VALUE (bindings
))
3510 || TREE_PUBLIC (BINDING_VALUE (bindings
))))
3511 decl
= BINDING_VALUE (bindings
);
3516 /* If different sort of thing, we already gave an error. */
3517 && TREE_CODE (decl
) == TREE_CODE (x
)
3518 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3520 cp_pedwarn ("type mismatch with previous external decl", x
);
3521 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3525 /* This name is new in its binding level.
3526 Install the new declaration and return it. */
3527 if (namespace_bindings_p ())
3529 /* Install a global value. */
3530 tree bindings
= binding_for_name (name
, current_namespace
);
3532 /* If the first global decl has external linkage,
3533 warn if we later see static one. */
3534 if (BINDING_VALUE (bindings
) == NULL_TREE
&& TREE_PUBLIC (x
))
3535 TREE_PUBLIC (name
) = 1;
3537 /* Don't install an artificial TYPE_DECL if we already have
3538 another _DECL with that name. */
3539 if (TREE_CODE (x
) != TYPE_DECL
3541 || ! DECL_ARTIFICIAL (x
))
3543 if (TREE_CODE (x
) == FUNCTION_DECL
)
3544 my_friendly_assert ((BINDING_VALUE (bindings
) == NULL_TREE
)
3545 || BINDING_VALUE (bindings
) == x
, 378);
3546 BINDING_VALUE (bindings
) = x
;
3549 /* Don't forget if the function was used via an implicit decl. */
3550 if (IDENTIFIER_IMPLICIT_DECL (name
)
3551 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3554 /* Don't forget if its address was taken in that way. */
3555 if (IDENTIFIER_IMPLICIT_DECL (name
)
3556 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3557 TREE_ADDRESSABLE (x
) = 1;
3559 /* Warn about mismatches against previous implicit decl. */
3560 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3561 /* If this real decl matches the implicit, don't complain. */
3562 && ! (TREE_CODE (x
) == FUNCTION_DECL
3563 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3565 ("`%D' was previously implicitly declared to return `int'", x
);
3567 /* If new decl is `static' and an `extern' was seen previously,
3569 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3570 warn_extern_redeclared_static (x
, t
);
3574 /* Here to install a non-global value. */
3575 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3576 tree oldglobal
= binding_for_name (name
, current_namespace
);
3578 /* Don't install an artificial TYPE_DECL if we already have
3579 another _DECL with that name. */
3580 if (TREE_CODE (x
) != TYPE_DECL
3582 || ! DECL_ARTIFICIAL (x
))
3583 set_identifier_local_value_with_scope (name
, x
, b
);
3585 /* If this is a TYPE_DECL, push it into the type value slot. */
3586 if (TREE_CODE (x
) == TYPE_DECL
)
3587 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3589 /* Clear out any TYPE_DECL shadowed by a namespace so that
3590 we won't think this is a type. The C struct hack doesn't
3591 go through namespaces. */
3592 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3593 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3595 /* If this is an extern function declaration, see if we
3596 have a global definition or declaration for the function. */
3597 if (oldlocal
== NULL_TREE
3598 && DECL_EXTERNAL (x
)
3599 && BINDING_VALUE (oldglobal
) != NULL_TREE
3600 && TREE_CODE (x
) == FUNCTION_DECL
3601 && TREE_CODE (BINDING_VALUE (oldglobal
)) == FUNCTION_DECL
)
3603 /* We have one. Their types must agree. */
3604 if (decls_match (x
, BINDING_VALUE (oldglobal
)))
3608 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3609 cp_warning_at ("global declaration `%#D'", BINDING_VALUE (oldglobal
));
3612 /* If we have a local external declaration,
3613 and no file-scope declaration has yet been seen,
3614 then if we later have a file-scope decl it must not be static. */
3615 if (oldlocal
== NULL_TREE
3616 && BINDING_VALUE (oldglobal
) == NULL_TREE
3617 && DECL_EXTERNAL (x
)
3620 TREE_PUBLIC (name
) = 1;
3623 if (DECL_FROM_INLINE (x
))
3624 /* Inline decls shadow nothing. */;
3626 /* Warn if shadowing an argument at the top level of the body. */
3627 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3628 && TREE_CODE (oldlocal
) == PARM_DECL
3629 && TREE_CODE (x
) != PARM_DECL
)
3631 /* Go to where the parms should be and see if we
3633 struct binding_level
*b
= current_binding_level
->level_chain
;
3639 if (b
->parm_flag
== 1)
3640 cp_error ("declaration of `%#D' shadows a parameter", name
);
3642 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3643 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3645 warning ("variable `%s' shadows local",
3646 IDENTIFIER_POINTER (name
));
3647 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3649 /* Maybe warn if shadowing something else. */
3650 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3651 /* No shadow warnings for internally generated vars. */
3652 && ! DECL_ARTIFICIAL (x
)
3653 /* No shadow warnings for vars made for inlining. */
3654 && ! DECL_FROM_INLINE (x
))
3656 char *warnstring
= NULL
;
3658 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3659 warnstring
= "declaration of `%s' shadows a parameter";
3660 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3661 && current_class_ptr
3662 && !TREE_STATIC (name
))
3663 warnstring
= "declaration of `%s' shadows a member of `this'";
3664 else if (oldlocal
!= NULL_TREE
)
3665 warnstring
= "declaration of `%s' shadows previous local";
3666 else if (BINDING_VALUE (oldglobal
) != NULL_TREE
)
3667 /* XXX shadow warnings in outer-more namespaces */
3668 warnstring
= "declaration of `%s' shadows global declaration";
3671 warning (warnstring
, IDENTIFIER_POINTER (name
));
3675 if (TREE_CODE (x
) == FUNCTION_DECL
)
3676 check_default_args (x
);
3678 /* Keep count of variables in this level with incomplete type. */
3679 if (TREE_CODE (x
) == VAR_DECL
3680 && TREE_TYPE (x
) != error_mark_node
3681 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3682 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3683 /* RTTI TD entries are created while defining the type_info. */
3684 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3685 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3686 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3689 /* Put decls on list in reverse order.
3690 We will reverse them later if necessary. */
3691 TREE_CHAIN (x
) = b
->names
;
3693 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3694 my_friendly_abort (124);
3699 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3700 caller to set DECL_CONTEXT properly. */
3703 pushdecl_with_scope (x
, level
)
3705 struct binding_level
*level
;
3707 register struct binding_level
*b
;
3708 tree function_decl
= current_function_decl
;
3710 current_function_decl
= NULL_TREE
;
3711 if (level
->parm_flag
== 2)
3713 b
= class_binding_level
;
3714 class_binding_level
= level
;
3715 pushdecl_class_level (x
);
3716 class_binding_level
= b
;
3720 b
= current_binding_level
;
3721 current_binding_level
= level
;
3723 current_binding_level
= b
;
3725 current_function_decl
= function_decl
;
3729 /* Like pushdecl, only it places X in the current namespace,
3733 pushdecl_namespace_level (x
)
3736 register struct binding_level
*b
= inner_binding_level
;
3739 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
3741 /* Now, the type_shadowed stack may screw us. Munge it so it does
3743 if (TREE_CODE (x
) == TYPE_DECL
)
3745 tree name
= DECL_NAME (x
);
3747 tree
*ptr
= (tree
*)0;
3748 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3750 tree shadowed
= b
->type_shadowed
;
3751 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3752 if (TREE_PURPOSE (shadowed
) == name
)
3754 ptr
= &TREE_VALUE (shadowed
);
3755 /* Can't break out of the loop here because sometimes
3756 a binding level will have duplicate bindings for
3757 PT names. It's gross, but I haven't time to fix it. */
3760 newval
= TREE_TYPE (x
);
3761 if (ptr
== (tree
*)0)
3763 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3764 up here if this is changed to an assertion. --KR */
3765 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3775 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3779 pushdecl_top_level (x
)
3782 tree cur_namespace
= current_namespace
;
3783 current_namespace
= global_namespace
;
3784 x
= pushdecl_namespace_level (x
);
3785 current_namespace
= cur_namespace
;
3789 /* Make the declaration of X appear in CLASS scope. */
3792 pushdecl_class_level (x
)
3795 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3796 scope looks for the pre-mangled name. */
3797 register tree name
= DECL_NAME (x
);
3801 if (TYPE_BEING_DEFINED (current_class_type
))
3803 /* A name N used in a class S shall refer to the same declaration
3804 in its context and when re-evaluated in the completed scope of S.
3806 Types, enums, and static vars are checked here; other
3807 members are checked in finish_struct. */
3808 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3811 && flag_optional_diags
3812 /* Don't complain about inherited names. */
3813 && id_in_current_class (name
)
3814 /* Or shadowed tags. */
3815 && !(DECL_DECLARES_TYPE_P (icv
)
3816 && DECL_CONTEXT (icv
) == current_class_type
))
3818 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name
, x
);
3819 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
3824 push_class_level_binding (name
, x
);
3825 if (TREE_CODE (x
) == TYPE_DECL
)
3827 set_identifier_type_value (name
, TREE_TYPE (x
));
3834 /* This function is used to push the mangled decls for nested types into
3835 the appropriate scope. Previously pushdecl_top_level was used, but that
3836 is incorrect for members of local classes. */
3839 pushdecl_nonclass_level (x
)
3842 struct binding_level
*b
= current_binding_level
;
3844 my_friendly_assert (b
->parm_flag
!= 2, 180);
3847 /* Get out of template binding levels */
3848 while (b
->pseudo_global
)
3852 pushdecl_with_scope (x
, b
);
3856 /* Make the declaration(s) of X appear in CLASS scope
3857 under the name NAME. */
3860 push_class_level_binding (name
, x
)
3864 /* The class_binding_level will be NULL if x is a template
3865 parameter name in a member template. */
3866 if (!class_binding_level
)
3869 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3870 && purpose_member (name
, class_binding_level
->class_shadowed
))
3873 maybe_push_cache_obstack ();
3874 class_binding_level
->class_shadowed
3875 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3876 class_binding_level
->class_shadowed
);
3878 IDENTIFIER_CLASS_VALUE (name
) = x
;
3879 obstack_ptr_grow (&decl_obstack
, x
);
3882 /* Insert another USING_DECL into the current binding level,
3883 returning this declaration. If this is a redeclaration,
3884 do nothing and return NULL_TREE. */
3887 push_using_decl (scope
, name
)
3893 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
3894 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
3895 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
3896 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
3900 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
3901 DECL_INITIAL (decl
) = scope
;
3902 TREE_CHAIN (decl
) = current_binding_level
->usings
;
3903 current_binding_level
->usings
= decl
;
3907 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3908 changed (i.e. there was already a directive), or the fresh
3909 TREE_LIST otherwise. */
3912 push_using_directive (used
)
3915 tree ud
= current_binding_level
->using_directives
;
3916 tree iter
, ancestor
;
3918 /* Check if we already have this. */
3919 if (purpose_member (used
, ud
) != NULL_TREE
)
3922 /* Recursively add all namespaces used. */
3923 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
3924 push_using_directive (TREE_PURPOSE (iter
));
3926 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
3927 ud
= current_binding_level
->using_directives
;
3928 ud
= perm_tree_cons (used
, ancestor
, ud
);
3929 current_binding_level
->using_directives
= ud
;
3933 /* DECL is a FUNCTION_DECL which may have other definitions already in
3934 place. We get around this by making the value of the identifier point
3935 to a list of all the things that want to be referenced by that name. It
3936 is then up to the users of that name to decide what to do with that
3939 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3940 slot. It is dealt with the same way.
3942 The value returned may be a previous declaration if we guessed wrong
3943 about what language DECL should belong to (C or C++). Otherwise,
3944 it's always DECL (and never something that's not a _DECL). */
3947 push_overloaded_decl (decl
, forgettable
)
3951 tree orig_name
= DECL_NAME (decl
);
3953 int doing_global
= (namespace_bindings_p () || ! forgettable
);
3957 old
= namespace_binding (orig_name
, DECL_CONTEXT (decl
));
3958 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3959 && DECL_ARTIFICIAL (old
)
3960 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3962 if (duplicate_decls (decl
, old
))
3969 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
3971 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
3973 current_binding_level
->shadowed
3974 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
3981 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
3983 tree t
= TREE_TYPE (old
);
3984 if (IS_AGGR_TYPE (t
) && warn_shadow
3985 && (! DECL_IN_SYSTEM_HEADER (decl
)
3986 || ! DECL_IN_SYSTEM_HEADER (old
)))
3987 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
3990 else if (is_overloaded_fn (old
))
3994 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
3995 if (decl
== OVL_CURRENT (tmp
)
3996 || duplicate_decls (decl
, OVL_CURRENT (tmp
)))
3997 return OVL_CURRENT (tmp
);
4001 cp_error_at ("previous non-function declaration `%#D'", old
);
4002 cp_error ("conflicts with function declaration `%#D'", decl
);
4007 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4009 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4010 old
= ovl_cons (old
, NULL_TREE
);
4011 old
= ovl_cons (decl
, old
);
4014 /* orig_name is not ambiguous. */
4018 set_namespace_binding (orig_name
, current_namespace
, old
);
4020 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
4025 /* Generate an implicit declaration for identifier FUNCTIONID
4026 as a function of type int (). Print a warning if appropriate. */
4029 implicitly_declare (functionid
)
4033 int temp
= allocation_temporary_p ();
4035 push_obstacks_nochange ();
4037 /* Save the decl permanently so we can warn if definition follows.
4038 In ANSI C, warn_implicit is usually false, so the saves little space.
4039 But in C++, it's usually true, hence the extra code. */
4040 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
4041 end_temporary_allocation ();
4043 /* We used to reuse an old implicit decl here,
4044 but this loses with inline functions because it can clobber
4045 the saved decl chains. */
4046 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4048 DECL_EXTERNAL (decl
) = 1;
4049 TREE_PUBLIC (decl
) = 1;
4051 /* ANSI standard says implicit declarations are in the innermost block.
4052 So we record the decl in the standard fashion. */
4054 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
4057 /* Only one warning per identifier. */
4058 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4060 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4063 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4070 /* Return zero if the declaration NEWDECL is valid
4071 when the declaration OLDDECL (assumed to be for the same name)
4072 has already been seen.
4073 Otherwise return an error message format string with a %s
4074 where the identifier should go. */
4077 redeclaration_error_message (newdecl
, olddecl
)
4078 tree newdecl
, olddecl
;
4080 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4082 /* Because C++ can put things into name space for free,
4083 constructs like "typedef struct foo { ... } foo"
4084 would look like an erroneous redeclaration. */
4085 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
4088 return "redefinition of `%#D'";
4090 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4092 /* If this is a pure function, its olddecl will actually be
4093 the original initialization to `0' (which we force to call
4094 abort()). Don't complain about redefinition in this case. */
4095 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
4098 /* If both functions come from different namespaces, this is not
4099 a redeclaration - this is a conflict with a used function. */
4100 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4101 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4102 return "`%D' conflicts with used function";
4104 /* We'll complain about linkage mismatches in
4105 warn_extern_redeclared_static. */
4107 /* Defining the same name twice is no good. */
4108 if (DECL_INITIAL (olddecl
) != NULL_TREE
4109 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4111 if (DECL_NAME (olddecl
) == NULL_TREE
)
4112 return "`%#D' not declared in class";
4114 return "redefinition of `%#D'";
4118 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4120 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4121 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4122 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4123 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4124 && TYPE_SIZE (TREE_TYPE (newdecl
))
4125 && TYPE_SIZE (TREE_TYPE (olddecl
))))
4126 return "redefinition of `%#D'";
4129 else if (toplevel_bindings_p ())
4131 /* Objects declared at top level: */
4132 /* If at least one is a reference, it's ok. */
4133 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4135 /* Reject two definitions. */
4136 return "redefinition of `%#D'";
4140 /* Objects declared with block scope: */
4141 /* Reject two definitions, and reject a definition
4142 together with an external reference. */
4143 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4144 return "redeclaration of `%#D'";
4149 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4150 Create one if none exists so far for the current function.
4151 This function is called for both label definitions and label references. */
4157 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
4159 if (current_function_decl
== NULL_TREE
)
4161 error ("label `%s' referenced outside of any function",
4162 IDENTIFIER_POINTER (id
));
4166 if ((decl
== NULL_TREE
4167 || DECL_SOURCE_LINE (decl
) == 0)
4168 && (named_label_uses
== NULL
4169 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4170 || named_label_uses
->label_decl
!= decl
))
4172 struct named_label_list
*new_ent
;
4174 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
4175 new_ent
->label_decl
= decl
;
4176 new_ent
->names_in_scope
= current_binding_level
->names
;
4177 new_ent
->binding_level
= current_binding_level
;
4178 new_ent
->lineno_o_goto
= lineno
;
4179 new_ent
->filename_o_goto
= input_filename
;
4180 new_ent
->next
= named_label_uses
;
4181 named_label_uses
= new_ent
;
4184 /* Use a label already defined or ref'd with this name. */
4185 if (decl
!= NULL_TREE
)
4187 /* But not if it is inherited and wasn't declared to be inheritable. */
4188 if (DECL_CONTEXT (decl
) != current_function_decl
4189 && ! C_DECLARED_LABEL_FLAG (decl
))
4190 return shadow_label (id
);
4194 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4196 /* Make sure every label has an rtx. */
4199 /* A label not explicitly declared must be local to where it's ref'd. */
4200 DECL_CONTEXT (decl
) = current_function_decl
;
4202 DECL_MODE (decl
) = VOIDmode
;
4204 /* Say where one reference is to the label,
4205 for the sake of the error if it is not defined. */
4206 DECL_SOURCE_LINE (decl
) = lineno
;
4207 DECL_SOURCE_FILE (decl
) = input_filename
;
4209 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4211 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
4212 named_label_uses
->label_decl
= decl
;
4217 /* Make a label named NAME in the current function,
4218 shadowing silently any that may be inherited from containing functions
4219 or containing scopes.
4221 Note that valid use, if the label being shadowed
4222 comes from another scope in the same function,
4223 requires calling declare_nonlocal_label right away. */
4229 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
4231 if (decl
!= NULL_TREE
)
4233 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4234 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4237 return lookup_label (name
);
4240 /* Define a label, specifying the location in the source file.
4241 Return the LABEL_DECL node for the label, if the definition is valid.
4242 Otherwise return 0. */
4245 define_label (filename
, line
, name
)
4252 if (minimal_parse_mode
)
4254 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4255 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
4257 DECL_SOURCE_LINE (decl
) = line
;
4258 DECL_SOURCE_FILE (decl
) = filename
;
4263 decl
= lookup_label (name
);
4265 /* After labels, make any new cleanups go into their
4266 own new (temporary) binding contour. */
4267 current_binding_level
->more_cleanups_ok
= 0;
4269 /* If label with this name is known from an outer context, shadow it. */
4270 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
4272 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4273 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4274 decl
= lookup_label (name
);
4277 if (name
== get_identifier ("wchar_t"))
4278 cp_pedwarn ("label named wchar_t");
4280 if (DECL_INITIAL (decl
) != NULL_TREE
)
4282 cp_error ("duplicate label `%D'", decl
);
4287 struct named_label_list
*uses
, *prev
;
4290 /* Mark label as having been defined. */
4291 DECL_INITIAL (decl
) = error_mark_node
;
4292 /* Say where in the source. */
4293 DECL_SOURCE_FILE (decl
) = filename
;
4294 DECL_SOURCE_LINE (decl
) = line
;
4297 uses
= named_label_uses
;
4298 while (uses
!= NULL
)
4299 if (uses
->label_decl
== decl
)
4301 struct binding_level
*b
= current_binding_level
;
4304 tree new_decls
= b
->names
;
4305 tree old_decls
= (b
== uses
->binding_level
)
4306 ? uses
->names_in_scope
: NULL_TREE
;
4307 while (new_decls
!= old_decls
)
4309 if (TREE_CODE (new_decls
) == VAR_DECL
4310 /* Don't complain about crossing initialization
4311 of internal entities. They can't be accessed,
4312 and they should be cleaned up
4313 by the time we get to the label. */
4314 && ! DECL_ARTIFICIAL (new_decls
)
4315 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4316 && DECL_INITIAL (new_decls
) != error_mark_node
)
4317 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4321 cp_error ("jump to label `%D'", decl
);
4322 error_with_file_and_line (uses
->filename_o_goto
,
4323 uses
->lineno_o_goto
,
4327 cp_error_at (" crosses initialization of `%#D'",
4330 new_decls
= TREE_CHAIN (new_decls
);
4332 if (b
== uses
->binding_level
)
4338 prev
->next
= uses
->next
;
4340 named_label_uses
= uses
->next
;
4349 current_function_return_value
= NULL_TREE
;
4356 struct binding_level
*level
;
4357 struct cp_switch
*next
;
4360 static struct cp_switch
*switch_stack
;
4366 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4367 p
->level
= current_binding_level
;
4368 p
->next
= switch_stack
;
4375 switch_stack
= switch_stack
->next
;
4378 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4379 /* XXX Note decl is never actually used. (bpk) */
4382 define_case_label (decl
)
4385 tree cleanup
= last_cleanup_this_contour ();
4386 struct binding_level
*b
= current_binding_level
;
4391 static int explained
= 0;
4392 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4393 warning ("where case label appears here");
4396 warning ("(enclose actions of previous case statements requiring");
4397 warning ("destructors in their own binding contours.)");
4402 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4404 tree new_decls
= b
->names
;
4405 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4407 if (TREE_CODE (new_decls
) == VAR_DECL
4408 /* Don't complain about crossing initialization
4409 of internal entities. They can't be accessed,
4410 and they should be cleaned up
4411 by the time we get to the label. */
4412 && ! DECL_ARTIFICIAL (new_decls
)
4413 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4414 && DECL_INITIAL (new_decls
) != error_mark_node
)
4415 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4418 error ("jump to case label");
4420 cp_error_at (" crosses initialization of `%#D'",
4426 /* After labels, make any new cleanups go into their
4427 own new (temporary) binding contour. */
4429 current_binding_level
->more_cleanups_ok
= 0;
4430 current_function_return_value
= NULL_TREE
;
4433 /* Return the list of declarations of the current level.
4434 Note that this list is in reverse order unless/until
4435 you nreverse it; and when you do nreverse it, you must
4436 store the result back using `storedecls' or you will lose. */
4441 return current_binding_level
->names
;
4444 /* Return the list of type-tags (for structs, etc) of the current level. */
4449 return current_binding_level
->tags
;
4452 /* Store the list of declarations of the current level.
4453 This is done for the parameter declarations of a function being defined,
4454 after they are modified in the light of any missing parameters. */
4460 current_binding_level
->names
= decls
;
4463 /* Similarly, store the list of tags of the current level. */
4469 current_binding_level
->tags
= tags
;
4472 /* Given NAME, an IDENTIFIER_NODE,
4473 return the structure (or union or enum) definition for that name.
4474 Searches binding levels from BINDING_LEVEL up to the global level.
4475 If THISLEVEL_ONLY is nonzero, searches only the specified context
4476 (but skips any tag-transparent contexts to find one that is
4477 meaningful for tags).
4478 FORM says which kind of type the caller wants;
4479 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4480 If the wrong kind of type is found, and it's not a template, an error is
4484 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4485 enum tree_code form
;
4487 struct binding_level
*binding_level
;
4490 register struct binding_level
*level
;
4491 /* Non-zero if, we should look past a pseudo-global level, even if
4493 int allow_pseudo_global
= 1;
4495 for (level
= binding_level
; level
; level
= level
->level_chain
)
4498 if (ANON_AGGRNAME_P (name
))
4499 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4501 /* There's no need for error checking here, because
4502 anon names are unique throughout the compilation. */
4503 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4504 return TREE_VALUE (tail
);
4506 else if (level
->namespace_p
)
4507 /* Do namespace lookup. */
4508 /* XXX: is this a real lookup, considering using-directives etc. ??? */
4509 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
4511 tree old
= binding_for_name (name
, tail
);
4513 /* If we just skipped past a pseudo global level, even
4514 though THISLEVEL_ONLY, and we find a template class
4515 declaration, then we use the _TYPE node for the
4516 template. See the example below. */
4517 if (thislevel_only
&& !allow_pseudo_global
4518 && old
&& BINDING_VALUE (old
)
4519 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
4520 old
= TREE_TYPE (BINDING_VALUE (old
));
4522 old
= BINDING_TYPE (old
);
4524 /* If it has an original type, it is a typedef, and we
4525 should not return it. */
4526 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
4528 if (old
&& TREE_CODE (old
) != form
4529 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
4531 cp_error ("`%#D' redeclared as %C", old
, form
);
4536 if (thislevel_only
|| tail
== global_namespace
)
4540 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4542 if (TREE_PURPOSE (tail
) == name
)
4544 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4545 /* Should tighten this up; it'll probably permit
4546 UNION_TYPE and a struct template, for example. */
4548 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4550 /* Definition isn't the kind we were looking for. */
4551 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4555 return TREE_VALUE (tail
);
4558 if (thislevel_only
&& ! level
->tag_transparent
)
4560 if (level
->pseudo_global
&& allow_pseudo_global
)
4562 /* We must deal with cases like this:
4564 template <class T> struct S;
4565 template <class T> struct S {};
4567 When looking up `S', for the second declaration, we
4568 would like to find the first declaration. But, we
4569 are in the pseudo-global level created for the
4570 template parameters, rather than the (surrounding)
4571 namespace level. Thus, we keep going one more level,
4572 even though THISLEVEL_ONLY is non-zero. */
4573 allow_pseudo_global
= 0;
4579 if (current_class_type
&& level
->level_chain
->namespace_p
)
4581 /* Try looking in this class's tags before heading into
4582 global binding level. */
4583 tree context
= current_class_type
;
4586 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4590 these_tags
= CLASSTYPE_TAGS (context
);
4591 if (ANON_AGGRNAME_P (name
))
4594 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4596 return TREE_VALUE (tail
);
4597 these_tags
= TREE_CHAIN (these_tags
);
4602 if (TREE_PURPOSE (these_tags
) == name
)
4604 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4606 cp_error ("`%#D' redeclared as %C in class scope",
4607 TREE_VALUE (tail
), form
);
4610 return TREE_VALUE (tail
);
4612 these_tags
= TREE_CHAIN (these_tags
);
4614 /* If this type is not yet complete, then don't
4615 look at its context. */
4616 if (TYPE_SIZE (context
) == NULL_TREE
)
4618 /* Go to next enclosing type, if any. */
4619 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4622 context
= DECL_CONTEXT (context
);
4625 my_friendly_abort (10);
4638 set_current_level_tags_transparency (tags_transparent
)
4639 int tags_transparent
;
4641 current_binding_level
->tag_transparent
= tags_transparent
;
4645 /* Given a type, find the tag that was defined for it and return the tag name.
4646 Otherwise return 0. However, the value can never be 0
4647 in the cases in which this is used.
4649 C++: If NAME is non-zero, this is the new name to install. This is
4650 done when replacing anonymous tags with real tag names. */
4653 lookup_tag_reverse (type
, name
)
4657 register struct binding_level
*level
;
4659 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4662 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4664 if (TREE_VALUE (tail
) == type
)
4667 TREE_PURPOSE (tail
) = name
;
4668 return TREE_PURPOSE (tail
);
4675 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4676 Return the type value, or NULL_TREE if not found. */
4679 lookup_nested_type (type
, context
)
4683 if (context
== NULL_TREE
)
4687 switch (TREE_CODE (context
))
4691 tree ctype
= TREE_TYPE (context
);
4692 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4694 return TREE_VALUE (match
);
4695 context
= DECL_CONTEXT (context
);
4697 /* When we have a nested class whose member functions have
4698 local types (e.g., a set of enums), we'll arrive here
4699 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4700 the enclosing class. Instead, we want to make sure we
4701 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4702 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4703 context
= TREE_CHAIN (context
);
4707 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4708 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4711 my_friendly_abort (12);
4717 /* Look up NAME in the NAMESPACE. */
4720 lookup_namespace_name (namespace, name
)
4721 tree
namespace, name
;
4723 struct tree_binding _b
;
4726 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
4727 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4729 val
= binding_init (&_b
);
4730 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4731 return error_mark_node
;
4733 if (BINDING_VALUE (val
))
4735 val
= BINDING_VALUE (val
);
4737 /* If we have a single function from a using decl, pull it out. */
4738 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4739 val
= OVL_FUNCTION (val
);
4743 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4744 return error_mark_node
;
4748 make_typename_type (context
, name
)
4754 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4755 name
= TYPE_IDENTIFIER (name
);
4756 else if (TREE_CODE (name
) == TYPE_DECL
)
4757 name
= DECL_NAME (name
);
4761 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4763 name
= TREE_OPERAND (name
, 0);
4764 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4765 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4767 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4768 my_friendly_abort (2000);
4770 if (! uses_template_parms (context
)
4771 || currently_open_class (context
))
4773 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4775 if (IS_AGGR_TYPE (context
))
4776 t
= lookup_field (context
, name
, 0, 0);
4780 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4781 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4783 cp_error ("no class template named `%#T' in `%#T'",
4785 return error_mark_node
;
4788 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4790 /*entering_scope=*/0);
4794 if (IS_AGGR_TYPE (context
))
4795 t
= lookup_field (context
, name
, 0, 1);
4801 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4802 return error_mark_node
;
4805 return TREE_TYPE (t
);
4809 if (processing_template_decl
)
4810 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4811 t
= make_lang_type (TYPENAME_TYPE
);
4812 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4813 d
= build_decl (TYPE_DECL
, name
, t
);
4814 if (processing_template_decl
)
4817 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4818 TYPE_NAME (TREE_TYPE (d
)) = d
;
4819 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4820 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4821 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4826 /* Select the right _DECL from multiple choices. */
4829 select_decl (binding
, flags
)
4834 val
= BINDING_VALUE (binding
);
4835 if (LOOKUP_NAMESPACES_ONLY (flags
))
4837 /* We are not interested in types. */
4838 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4843 /* If we could have a type and
4844 we have nothing or we need a type and have none. */
4845 if (BINDING_TYPE (binding
)
4846 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4847 && TREE_CODE (val
) != TYPE_DECL
)))
4848 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4849 /* Don't return non-types if we really prefer types. */
4850 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4851 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4857 /* Unscoped lookup of a global, iterate over namespaces, considering
4858 using namespace statements. */
4861 unqualified_namespace_lookup (name
, flags
)
4865 struct tree_binding _binding
;
4866 tree b
= binding_init (&_binding
);
4867 tree initial
= current_decl_namespace();
4868 tree scope
= initial
;
4870 struct binding_level
*level
;
4871 tree val
= NULL_TREE
;
4875 val
= binding_for_name (name
, scope
);
4877 /* Initialize binding for this context. */
4878 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4879 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4881 /* Add all _DECLs seen through local using-directives. */
4882 for (level
= current_binding_level
;
4883 !level
->namespace_p
;
4884 level
= level
->level_chain
)
4885 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4887 /* Give up because of error. */
4890 /* Add all _DECLs seen through global using-directives. */
4891 /* XXX local and global using lists should work equally. */
4895 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4897 /* Give up because of error. */
4899 if (siter
== scope
) break;
4900 siter
= CP_DECL_CONTEXT (siter
);
4903 val
= select_decl (b
, flags
);
4904 if (scope
== global_namespace
)
4906 scope
= CP_DECL_CONTEXT (scope
);
4911 /* Combine prefer_type and namespaces_only into flags. */
4914 lookup_flags (prefer_type
, namespaces_only
)
4915 int prefer_type
, namespaces_only
;
4917 if (namespaces_only
)
4918 return LOOKUP_PREFER_NAMESPACES
;
4919 if (prefer_type
> 1)
4920 return LOOKUP_PREFER_TYPES
;
4921 if (prefer_type
> 0)
4922 return LOOKUP_PREFER_BOTH
;
4926 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4927 ignore it or not. Subroutine of lookup_name_real. */
4930 qualify_lookup (val
, flags
)
4934 if (val
== NULL_TREE
)
4936 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
4938 if ((flags
& LOOKUP_PREFER_TYPES
)
4939 && (TREE_CODE (val
) == TYPE_DECL
4940 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
4941 && DECL_CLASS_TEMPLATE_P (val
))))
4943 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
4948 /* Look up NAME in the current binding level and its superiors in the
4949 namespace of variables, functions and typedefs. Return a ..._DECL
4950 node of some kind representing its definition if there is only one
4951 such declaration, or return a TREE_LIST with all the overloaded
4952 definitions if there are many, or return 0 if it is undefined.
4954 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4955 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4956 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4957 Otherwise we prefer non-TYPE_DECLs.
4959 If NONCLASS is non-zero, we don't look for the NAME in class scope,
4960 using IDENTIFIER_CLASS_VALUE. */
4963 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
4965 int prefer_type
, nonclass
, namespaces_only
;
4969 tree from_obj
= NULL_TREE
;
4970 tree locval
, classval
;
4973 /* Hack: copy flag set by parser, if set. */
4974 if (only_namespace_names
)
4975 namespaces_only
= 1;
4977 if (prefer_type
== -2)
4979 extern int looking_for_typename
;
4980 tree type
= NULL_TREE
;
4983 prefer_type
= looking_for_typename
;
4985 flags
= lookup_flags (prefer_type
, namespaces_only
);
4986 /* During parsing, we need to complain. */
4987 flags
|= LOOKUP_COMPLAIN
;
4988 /* If the next thing is '<', class templates are types. */
4989 if (looking_for_template
)
4990 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
4992 /* std:: becomes :: for now. */
4993 if (got_scope
== std_node
)
4994 got_scope
= void_type_node
;
4998 else if (got_object
!= error_mark_node
)
5003 if (type
== error_mark_node
)
5004 return error_mark_node
;
5005 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5006 type
= TREE_TYPE (type
);
5009 type
= complete_type (type
);
5011 if (TREE_CODE (type
) == VOID_TYPE
)
5012 type
= global_namespace
;
5013 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5015 struct tree_binding b
;
5016 val
= binding_init (&b
);
5017 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5019 val
= select_decl (val
, flags
);
5021 else if (! IS_AGGR_TYPE (type
)
5022 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5023 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5024 || TREE_CODE (type
) == TYPENAME_TYPE
)
5025 /* Someone else will give an error about this if needed. */
5027 else if (TYPE_BEING_DEFINED (type
))
5029 val
= IDENTIFIER_CLASS_VALUE (name
);
5030 if (val
&& DECL_CONTEXT (val
) != type
)
5032 struct binding_level
*b
= class_binding_level
;
5033 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5035 tree t
= purpose_member (name
, b
->class_shadowed
);
5036 if (t
&& TREE_VALUE (t
)
5037 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5039 val
= TREE_VALUE (t
);
5044 if (val
== NULL_TREE
)
5045 val
= lookup_field (type
, name
, 0, 1);
5047 else if (type
== current_class_type
)
5048 val
= IDENTIFIER_CLASS_VALUE (name
);
5050 val
= lookup_member (type
, name
, 0, prefer_type
);
5057 else if (got_object
&& val
)
5061 flags
= lookup_flags (prefer_type
, namespaces_only
);
5063 locval
= classval
= NULL_TREE
;
5065 if (! namespace_bindings_p ())
5066 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5068 /* In C++ class fields are between local and global scope,
5069 just before the global scope. */
5070 if (current_class_type
&& ! nonclass
)
5072 classval
= IDENTIFIER_CLASS_VALUE (name
);
5073 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5074 /* Try to find values from base classes if we are presently
5075 defining a type. We are presently only interested in
5077 classval
= lookup_field (current_class_type
, name
, 0, 1);
5079 /* Add implicit 'typename' to types from template bases. lookup_field
5080 will do this for us. If classval is actually from an enclosing
5081 scope, lookup_nested_field will get it for us. */
5082 else if (processing_template_decl
5083 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5084 && ! currently_open_class (DECL_CONTEXT (classval
))
5085 && uses_template_parms (current_class_type
)
5086 && ! DECL_ARTIFICIAL (classval
))
5087 classval
= lookup_field (current_class_type
, name
, 0, 1);
5089 /* yylex() calls this with -2, since we should never start digging for
5090 the nested name at the point where we haven't even, for example,
5091 created the COMPONENT_REF or anything like that. */
5092 if (classval
== NULL_TREE
)
5093 classval
= lookup_nested_field (name
, ! yylex
);
5095 classval
= qualify_lookup (classval
, flags
);
5098 if (locval
&& classval
)
5100 if (current_scope () == current_function_decl
5101 && ! hack_decl_function_context (current_function_decl
))
5102 /* Not in a nested function. */
5106 /* This is incredibly horrible. The whole concept of
5107 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5108 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5110 tree lctx
= hack_decl_function_context (locval
);
5111 tree cctx
= hack_decl_function_context (classval
);
5113 if (lctx
== current_scope ())
5115 else if (lctx
== cctx
)
5118 /* I don't know which is right; let's just guess for now. */
5127 val
= unqualified_namespace_lookup (name
, flags
);
5129 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5130 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5131 && TREE_TYPE (TREE_TYPE (val
)))
5133 tree nsval
= unqualified_namespace_lookup (name
, flags
);
5135 if (val
&& nsval
&& TREE_CODE (nsval
) == TYPE_DECL
)
5137 static int explained
;
5138 cp_warning ("namespace-scope type `%#D'", nsval
);
5140 (" is used instead of `%D' from dependent base class", val
);
5144 cp_warning (" (use `typename %D' if that's what you meant)",
5154 /* This should only warn about types used in qualified-ids. */
5155 if (from_obj
&& from_obj
!= val
)
5157 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5158 && TREE_CODE (val
) == TYPE_DECL
5159 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5161 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5162 name
, got_object
, TREE_TYPE (from_obj
));
5163 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5167 /* We don't change val to from_obj if got_object depends on
5168 template parms because that breaks implicit typename for
5169 destructor calls. */
5170 if (! uses_template_parms (got_object
))
5174 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5175 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5177 /* Caller wants a class-or-namespace-name. */
5178 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5180 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5181 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5182 else if (TREE_TYPE (val
) == error_mark_node
)
5183 val
= error_mark_node
;
5185 /* If we have a single function from a using decl, pull it out. */
5186 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5187 val
= OVL_FUNCTION (val
);
5196 lookup_name_nonclass (name
)
5199 return lookup_name_real (name
, 0, 1, 0);
5203 lookup_function_nonclass (name
, args
)
5207 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5211 lookup_name_namespace_only (name
)
5214 /* type-or-namespace, nonclass, namespace_only */
5215 return lookup_name_real (name
, 1, 1, 1);
5219 lookup_name (name
, prefer_type
)
5223 return lookup_name_real (name
, prefer_type
, 0, 0);
5226 /* Similar to `lookup_name' but look only at current binding level. */
5229 lookup_name_current_level (name
)
5232 register tree t
= NULL_TREE
;
5234 if (current_binding_level
->namespace_p
)
5236 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5238 /* extern "C" function() */
5239 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5242 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5244 struct binding_level
*b
= current_binding_level
;
5247 if (purpose_member (name
, b
->shadowed
))
5248 return IDENTIFIER_LOCAL_VALUE (name
);
5259 /* Like lookup_name_current_level, but for types. */
5262 lookup_type_current_level (name
)
5265 register tree t
= NULL_TREE
;
5267 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5269 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5270 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5272 struct binding_level
*b
= current_binding_level
;
5275 if (purpose_member (name
, b
->type_shadowed
))
5276 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5288 begin_only_namespace_names ()
5290 only_namespace_names
= 1;
5294 end_only_namespace_names ()
5296 only_namespace_names
= 0;
5299 /* Arrange for the user to get a source line number, even when the
5300 compiler is going down in flames, so that she at least has a
5301 chance of working around problems in the compiler. We used to
5302 call error(), but that let the segmentation fault continue
5303 through; now, it's much more passive by asking them to send the
5304 maintainers mail about the problem. */
5308 int sig ATTRIBUTE_UNUSED
;
5310 signal (SIGSEGV
, SIG_DFL
);
5312 signal (SIGIOT
, SIG_DFL
);
5315 signal (SIGILL
, SIG_DFL
);
5318 signal (SIGABRT
, SIG_DFL
);
5321 signal (SIGBUS
, SIG_DFL
);
5323 my_friendly_abort (0);
5327 /* Unused -- brendan 970107 */
5328 /* Array for holding types considered "built-in". These types
5329 are output in the module in which `main' is defined. */
5330 static tree
*builtin_type_tdescs_arr
;
5331 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5334 /* Push the declarations of builtin types into the namespace.
5335 RID_INDEX, if < RID_MAX is the index of the builtin type
5336 in the array RID_POINTERS. NAME is the name used when looking
5337 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5340 record_builtin_type (rid_index
, name
, type
)
5345 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5346 tree tdecl
= NULL_TREE
;
5348 if ((int) rid_index
< (int) RID_MAX
)
5349 rname
= ridpointers
[(int) rid_index
];
5351 tname
= get_identifier (name
);
5353 TYPE_BUILT_IN (type
) = 1;
5357 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5358 set_identifier_type_value (tname
, NULL_TREE
);
5359 if ((int) rid_index
< (int) RID_MAX
)
5360 /* Built-in types live in the global namespace. */
5361 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5363 if (rname
!= NULL_TREE
)
5365 if (tname
!= NULL_TREE
)
5367 set_identifier_type_value (rname
, NULL_TREE
);
5368 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5372 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5373 set_identifier_type_value (rname
, NULL_TREE
);
5378 /* Record one of the standard Java types.
5379 * Declare it as having the given NAME.
5380 * If SIZE > 0, it is the size of one of the integral types;
5381 * otherwise it is the negative of the size of one of the other types. */
5384 record_builtin_java_type (name
, size
)
5390 type
= make_signed_type (size
);
5391 else if (size
> -32)
5392 { /* "__java_char" or ""__java_boolean". */
5393 type
= make_unsigned_type (-size
);
5394 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5397 { /* "__java_float" or ""__java_double". */
5398 type
= make_node (REAL_TYPE
);
5399 TYPE_PRECISION (type
) = - size
;
5402 record_builtin_type (RID_MAX
, name
, type
);
5403 decl
= TYPE_NAME (type
);
5404 DECL_IGNORED_P (decl
) = 1;
5405 TYPE_FOR_JAVA (type
) = 1;
5409 /* Push a type into the namespace so that the back-ends ignore it. */
5412 record_unknown_type (type
, name
)
5416 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5417 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5418 DECL_IGNORED_P (decl
) = 1;
5419 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5420 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5421 TYPE_ALIGN (type
) = 1;
5422 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5425 /* Push overloaded decl, in global scope, with one argument so it
5426 can be used as a callback from define_function. */
5429 push_overloaded_decl_1 (x
)
5432 push_overloaded_decl (x
, 0);
5439 auto_function (name
, type
, code
)
5441 enum built_in_function code
;
5443 return define_function
5444 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5445 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5449 /* Create the predefined scalar types of C,
5450 and some nodes representing standard constants (0, 1, (void *)0).
5451 Initialize the global binding level.
5452 Make definitions for built-in primitive functions. */
5455 init_decl_processing ()
5457 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5459 /* Data type of memcpy. */
5460 tree memcpy_ftype
, strlen_ftype
;
5461 int wchar_type_size
;
5463 tree array_domain_type
;
5464 extern int flag_strict_prototype
;
5465 tree vb_off_identifier
= NULL_TREE
;
5466 /* Function type `char *(char *, char *)' and similar ones */
5467 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5468 tree sizetype_endlink
;
5469 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5470 tree void_ftype
, void_ftype_int
, void_ftype_ptr
, ptr_ftype_void
;
5472 /* Have to make these distinct before we try using them. */
5473 lang_name_cplusplus
= get_identifier ("C++");
5474 lang_name_c
= get_identifier ("C");
5475 lang_name_java
= get_identifier ("Java");
5477 /* Enter the global namespace. */
5478 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5479 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5480 current_lang_name
= lang_name_cplusplus
;
5481 push_namespace (get_identifier ("::"));
5482 global_namespace
= current_namespace
;
5483 current_lang_name
= NULL_TREE
;
5485 if (flag_strict_prototype
== 2)
5488 strict_prototypes_lang_c
= strict_prototypes_lang_cplusplus
;
5491 strict_prototypes_lang_c
= flag_strict_prototype
;
5494 current_lang_name
= lang_name_c
;
5496 current_function_decl
= NULL_TREE
;
5497 named_labels
= NULL_TREE
;
5498 named_label_uses
= NULL
;
5499 current_binding_level
= NULL_BINDING_LEVEL
;
5500 free_binding_level
= NULL_BINDING_LEVEL
;
5502 #ifndef __CYGWIN32__
5503 /* Because most segmentation signals can be traced back into user
5504 code, catch them and at least give the user a chance of working
5505 around compiler bugs. */
5506 signal (SIGSEGV
, signal_catch
);
5508 /* We will also catch aborts in the back-end through signal_catch and
5509 give the user a chance to see where the error might be, and to defeat
5510 aborts in the back-end when there have been errors previously in their
5513 signal (SIGIOT
, signal_catch
);
5516 signal (SIGILL
, signal_catch
);
5519 signal (SIGABRT
, signal_catch
);
5522 signal (SIGBUS
, signal_catch
);
5524 #else /* ndef __CYGWIN32__ */
5525 /* Cygwin32 cannot handle catching signals other than
5526 SIGABRT yet. We hope this will cease to be the case soon. */
5528 signal (SIGABRT
, signal_catch
);
5530 #endif /* ndef __CYGWIN32__ */
5532 gcc_obstack_init (&decl_obstack
);
5534 /* Must lay these out before anything else gets laid out. */
5535 error_mark_node
= make_node (ERROR_MARK
);
5536 TREE_PERMANENT (error_mark_node
) = 1;
5537 TREE_TYPE (error_mark_node
) = error_mark_node
;
5538 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5539 TREE_TYPE (error_mark_list
) = error_mark_node
;
5541 /* Make the binding_level structure for global names. */
5543 global_binding_level
= current_binding_level
;
5544 /* The global level is the namespace level of ::. */
5545 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5546 declare_namespace_level ();
5548 this_identifier
= get_identifier (THIS_NAME
);
5549 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5550 ctor_identifier
= get_identifier (CTOR_NAME
);
5551 dtor_identifier
= get_identifier (DTOR_NAME
);
5552 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5553 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5554 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5555 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5556 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5557 if (flag_handle_signatures
)
5559 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5560 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5561 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5564 /* Define `int' and `char' first so that dbx will output them first. */
5566 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5567 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5569 /* Define `char', which is like either `signed char' or `unsigned char'
5570 but not the same as either. */
5574 ? make_signed_type (CHAR_TYPE_SIZE
)
5575 : make_unsigned_type (CHAR_TYPE_SIZE
));
5576 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5578 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5579 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5581 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5582 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5584 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5585 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5586 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5588 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5589 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5591 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5592 record_builtin_type (RID_MAX
, "long long unsigned int",
5593 long_long_unsigned_type_node
);
5594 record_builtin_type (RID_MAX
, "long long unsigned",
5595 long_long_unsigned_type_node
);
5597 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5598 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5599 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5600 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5601 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5603 /* `unsigned long' is the standard type for sizeof.
5604 Note that stddef.h uses `unsigned long',
5605 and this must agree, even if long and int are the same size. */
5607 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5610 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5612 /* Define both `signed char' and `unsigned char'. */
5613 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5614 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5615 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5616 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5618 /* These are types that type_for_size and type_for_mode use. */
5619 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5620 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5621 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5622 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5623 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5624 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5625 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5626 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5627 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5628 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5629 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5630 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5631 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5632 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5633 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5634 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5635 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5636 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5637 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5638 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5640 float_type_node
= make_node (REAL_TYPE
);
5641 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5642 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5643 layout_type (float_type_node
);
5645 double_type_node
= make_node (REAL_TYPE
);
5646 if (flag_short_double
)
5647 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5649 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5650 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5651 layout_type (double_type_node
);
5653 long_double_type_node
= make_node (REAL_TYPE
);
5654 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5655 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5656 layout_type (long_double_type_node
);
5658 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5659 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5660 complex_integer_type_node
));
5661 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5662 layout_type (complex_integer_type_node
);
5664 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5665 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5666 complex_float_type_node
));
5667 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5668 layout_type (complex_float_type_node
);
5670 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5671 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5672 complex_double_type_node
));
5673 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5674 layout_type (complex_double_type_node
);
5676 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5677 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5678 complex_long_double_type_node
));
5679 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5680 layout_type (complex_long_double_type_node
);
5682 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5683 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5684 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5685 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5686 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5687 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5688 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5689 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5691 integer_zero_node
= build_int_2 (0, 0);
5692 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5693 integer_one_node
= build_int_2 (1, 0);
5694 TREE_TYPE (integer_one_node
) = integer_type_node
;
5695 integer_two_node
= build_int_2 (2, 0);
5696 TREE_TYPE (integer_two_node
) = integer_type_node
;
5697 integer_three_node
= build_int_2 (3, 0);
5698 TREE_TYPE (integer_three_node
) = integer_type_node
;
5700 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5701 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5702 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5703 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5704 TYPE_PRECISION (boolean_type_node
) = 1;
5705 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5706 boolean_false_node
= build_int_2 (0, 0);
5707 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5708 boolean_true_node
= build_int_2 (1, 0);
5709 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5711 /* These are needed by stor-layout.c. */
5712 size_zero_node
= size_int (0);
5713 size_one_node
= size_int (1);
5715 signed_size_zero_node
= build_int_2 (0, 0);
5716 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5718 void_type_node
= make_node (VOID_TYPE
);
5719 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5720 layout_type (void_type_node
); /* Uses integer_zero_node. */
5721 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5722 TREE_PARMLIST (void_list_node
) = 1;
5724 null_pointer_node
= build_int_2 (0, 0);
5725 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5726 layout_type (TREE_TYPE (null_pointer_node
));
5728 /* Used for expressions that do nothing, but are not errors. */
5729 void_zero_node
= build_int_2 (0, 0);
5730 TREE_TYPE (void_zero_node
) = void_type_node
;
5732 string_type_node
= build_pointer_type (char_type_node
);
5733 const_string_type_node
5734 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5736 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5739 /* Make a type to be the domain of a few array types
5740 whose domains don't really matter.
5741 200 is small enough that it always fits in size_t
5742 and large enough that it can hold most function names for the
5743 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5744 array_domain_type
= build_index_type (build_int_2 (200, 0));
5746 /* Make a type for arrays of characters.
5747 With luck nothing will ever really depend on the length of this
5749 char_array_type_node
5750 = build_array_type (char_type_node
, array_domain_type
);
5751 /* Likewise for arrays of ints. */
5753 = build_array_type (integer_type_node
, array_domain_type
);
5755 /* This is just some anonymous class type. Nobody should ever
5756 need to look inside this envelope. */
5757 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5759 default_function_type
5760 = build_function_type (integer_type_node
, NULL_TREE
);
5762 ptr_type_node
= build_pointer_type (void_type_node
);
5764 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5766 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5768 endlink
= void_list_node
;
5769 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5770 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5771 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5773 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5774 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5775 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5776 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5777 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5779 void_ftype
= build_function_type (void_type_node
, endlink
);
5780 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5782 = build_function_type (void_type_node
,
5783 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5785 = build_exception_variant (void_ftype_ptr
,
5786 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5789 = build_function_type (float_type_node
,
5790 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5793 = build_function_type (double_type_node
, double_endlink
);
5795 ldouble_ftype_ldouble
5796 = build_function_type (long_double_type_node
,
5797 tree_cons (NULL_TREE
, long_double_type_node
,
5800 double_ftype_double_double
5801 = build_function_type (double_type_node
,
5802 tree_cons (NULL_TREE
, double_type_node
,
5806 = build_function_type (integer_type_node
, int_endlink
);
5809 = build_function_type (long_integer_type_node
,
5810 tree_cons (NULL_TREE
, long_integer_type_node
,
5813 int_ftype_cptr_cptr_sizet
5814 = build_function_type (integer_type_node
,
5815 tree_cons (NULL_TREE
, const_ptr_type_node
,
5816 tree_cons (NULL_TREE
, const_ptr_type_node
,
5817 tree_cons (NULL_TREE
,
5821 string_ftype_ptr_ptr
/* strcpy prototype */
5822 = build_function_type (string_type_node
,
5823 tree_cons (NULL_TREE
, string_type_node
,
5824 tree_cons (NULL_TREE
,
5825 const_string_type_node
,
5828 int_ftype_string_string
/* strcmp prototype */
5829 = build_function_type (integer_type_node
,
5830 tree_cons (NULL_TREE
, const_string_type_node
,
5831 tree_cons (NULL_TREE
,
5832 const_string_type_node
,
5835 strlen_ftype
/* strlen prototype */
5836 = build_function_type (sizetype
,
5837 tree_cons (NULL_TREE
, const_string_type_node
,
5840 memcpy_ftype
/* memcpy prototype */
5841 = build_function_type (ptr_type_node
,
5842 tree_cons (NULL_TREE
, ptr_type_node
,
5843 tree_cons (NULL_TREE
, const_ptr_type_node
,
5844 sizetype_endlink
)));
5846 if (flag_huge_objects
)
5847 delta_type_node
= long_integer_type_node
;
5849 delta_type_node
= short_integer_type_node
;
5851 builtin_function ("__builtin_constant_p", default_function_type
,
5852 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5854 builtin_return_address_fndecl
5855 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5856 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5858 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5859 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5861 ptr_ftype_void
= build_function_type (ptr_type_node
, endlink
);
5862 builtin_function ("__builtin_fp", ptr_ftype_void
, BUILT_IN_FP
, NULL_PTR
);
5863 builtin_function ("__builtin_sp", ptr_ftype_void
, BUILT_IN_SP
, NULL_PTR
);
5865 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5866 BUILT_IN_ALLOCA
, "alloca");
5867 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5868 /* Define alloca, ffs as builtins.
5869 Declare _exit just to mark it as volatile. */
5870 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5872 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5873 BUILT_IN_ALLOCA
, NULL_PTR
);
5874 /* Suppress error if redefined as a non-function. */
5875 DECL_BUILT_IN_NONANSI (temp
) = 1;
5876 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5877 /* Suppress error if redefined as a non-function. */
5878 DECL_BUILT_IN_NONANSI (temp
) = 1;
5879 temp
= builtin_function ("_exit", void_ftype_int
,
5880 NOT_BUILT_IN
, NULL_PTR
);
5881 TREE_THIS_VOLATILE (temp
) = 1;
5882 TREE_SIDE_EFFECTS (temp
) = 1;
5883 /* Suppress error if redefined as a non-function. */
5884 DECL_BUILT_IN_NONANSI (temp
) = 1;
5887 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5888 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5890 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5892 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5894 builtin_function ("__builtin_labs", long_ftype_long
,
5895 BUILT_IN_LABS
, NULL_PTR
);
5896 builtin_function ("__builtin_saveregs", ptr_ftype
,
5897 BUILT_IN_SAVEREGS
, NULL_PTR
);
5898 builtin_function ("__builtin_classify_type", default_function_type
,
5899 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5900 builtin_function ("__builtin_next_arg", ptr_ftype
,
5901 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5902 builtin_function ("__builtin_args_info", int_ftype_int
,
5903 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5904 builtin_function ("__builtin_setjmp",
5905 build_function_type (integer_type_node
,
5906 tree_cons (NULL_TREE
, ptr_type_node
,
5908 BUILT_IN_SETJMP
, NULL_PTR
);
5909 builtin_function ("__builtin_longjmp",
5910 build_function_type (integer_type_node
,
5911 tree_cons (NULL_TREE
, ptr_type_node
,
5912 tree_cons (NULL_TREE
,
5915 BUILT_IN_LONGJMP
, NULL_PTR
);
5917 /* Untyped call and return. */
5918 builtin_function ("__builtin_apply_args", ptr_ftype
,
5919 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5921 temp
= tree_cons (NULL_TREE
,
5922 build_pointer_type (build_function_type (void_type_node
,
5924 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
5925 builtin_function ("__builtin_apply",
5926 build_function_type (ptr_type_node
, temp
),
5927 BUILT_IN_APPLY
, NULL_PTR
);
5928 builtin_function ("__builtin_return", void_ftype_ptr
,
5929 BUILT_IN_RETURN
, NULL_PTR
);
5931 /* Currently under experimentation. */
5932 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5933 BUILT_IN_MEMCPY
, "memcpy");
5934 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5935 BUILT_IN_MEMCMP
, "memcmp");
5936 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5937 BUILT_IN_STRCMP
, "strcmp");
5938 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5939 BUILT_IN_STRCPY
, "strcpy");
5940 builtin_function ("__builtin_strlen", strlen_ftype
,
5941 BUILT_IN_STRLEN
, "strlen");
5942 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5943 BUILT_IN_FSQRT
, "sqrtf");
5944 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5945 BUILT_IN_FSQRT
, NULL_PTR
);
5946 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
5947 BUILT_IN_FSQRT
, "sqrtl");
5948 builtin_function ("__builtin_sinf", float_ftype_float
,
5949 BUILT_IN_SIN
, "sinf");
5950 builtin_function ("__builtin_sin", double_ftype_double
,
5951 BUILT_IN_SIN
, "sin");
5952 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
5953 BUILT_IN_SIN
, "sinl");
5954 builtin_function ("__builtin_cosf", float_ftype_float
,
5955 BUILT_IN_COS
, "cosf");
5956 builtin_function ("__builtin_cos", double_ftype_double
,
5957 BUILT_IN_COS
, "cos");
5958 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
5959 BUILT_IN_COS
, "cosl");
5961 if (!flag_no_builtin
)
5963 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5964 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5965 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5966 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
5967 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5969 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
5970 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
5972 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
5974 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
5976 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
5977 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
5978 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
5979 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
5981 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
5982 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
5983 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
5984 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
5985 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
5986 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
5988 /* Declare these functions volatile
5989 to avoid spurious "control drops through" warnings. */
5990 temp
= builtin_function ("abort", void_ftype
,
5991 NOT_BUILT_IN
, NULL_PTR
);
5992 TREE_THIS_VOLATILE (temp
) = 1;
5993 TREE_SIDE_EFFECTS (temp
) = 1;
5994 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5996 DECL_BUILT_IN_NONANSI (temp
) = 1;
5997 temp
= builtin_function ("exit", void_ftype_int
,
5998 NOT_BUILT_IN
, NULL_PTR
);
5999 TREE_THIS_VOLATILE (temp
) = 1;
6000 TREE_SIDE_EFFECTS (temp
) = 1;
6001 DECL_BUILT_IN_NONANSI (temp
) = 1;
6005 /* Support for these has not been written in either expand_builtin
6006 or build_function_call. */
6007 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6008 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6009 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6011 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6013 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6014 BUILT_IN_FMOD
, NULL_PTR
);
6015 builtin_function ("__builtin_frem", double_ftype_double_double
,
6016 BUILT_IN_FREM
, NULL_PTR
);
6017 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6018 BUILT_IN_MEMSET
, NULL_PTR
);
6019 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6021 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6025 /* C++ extensions */
6027 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6028 record_unknown_type (unknown_type_node
, "unknown type");
6030 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6031 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6033 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6035 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6037 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6038 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6040 /* This is for handling opaque types in signatures. */
6041 opaque_type_node
= copy_node (ptr_type_node
);
6042 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6043 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6045 /* This is special for C++ so functions can be overloaded. */
6047 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6048 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6049 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6050 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6052 = TREE_UNSIGNED (wchar_type_node
)
6053 ? unsigned_wchar_type_node
6054 : signed_wchar_type_node
;
6055 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6057 /* Artificial declaration of wchar_t -- can be bashed */
6058 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6060 pushdecl (wchar_decl_node
);
6062 /* This is for wide string constants. */
6063 wchar_array_type_node
6064 = build_array_type (wchar_type_node
, array_domain_type
);
6066 if (flag_vtable_thunks
)
6068 /* Make sure we get a unique function type, so we can give
6069 its pointer type a name. (This wins for gdb.) */
6070 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6071 TREE_TYPE (vfunc_type
) = integer_type_node
;
6072 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6073 layout_type (vfunc_type
);
6075 vtable_entry_type
= build_pointer_type (vfunc_type
);
6079 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6080 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6082 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6084 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6086 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6089 /* Make this part of an invisible union. */
6090 fields
[3] = copy_node (fields
[2]);
6091 TREE_TYPE (fields
[3]) = delta_type_node
;
6092 DECL_NAME (fields
[3]) = delta2_identifier
;
6093 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6094 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6095 TREE_UNSIGNED (fields
[3]) = 0;
6096 TREE_CHAIN (fields
[2]) = fields
[3];
6097 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6099 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6102 = build_array_type (vtable_entry_type
, NULL_TREE
);
6103 layout_type (vtbl_type_node
);
6104 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6105 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6107 /* Simplify life by making a "sigtable_entry_type". Give its
6108 fields names so that the debugger can use them. */
6110 if (flag_handle_signatures
)
6112 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6113 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6115 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6117 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6119 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6121 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6124 /* Set the alignment to the max of the alignment of ptr_type_node and
6125 delta_type_node. Double alignment wastes a word on the Sparc. */
6126 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6127 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6131 /* Make this part of an invisible union. */
6132 fields
[5] = copy_node (fields
[4]);
6133 TREE_TYPE (fields
[5]) = delta_type_node
;
6134 DECL_NAME (fields
[5]) = vt_off_identifier
;
6135 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6136 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6137 TREE_UNSIGNED (fields
[5]) = 0;
6138 TREE_CHAIN (fields
[4]) = fields
[5];
6140 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6141 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6144 std_node
= build_decl (NAMESPACE_DECL
,
6145 get_identifier (flag_honor_std
? "fake std":"std"),
6147 pushdecl (std_node
);
6149 global_type_node
= make_node (LANG_TYPE
);
6150 record_unknown_type (global_type_node
, "global type");
6153 current_lang_name
= lang_name_cplusplus
;
6156 tree bad_alloc_type_node
, newtype
, deltype
;
6158 push_namespace (get_identifier ("std"));
6159 bad_alloc_type_node
= xref_tag
6160 (class_type_node
, get_identifier ("bad_alloc"), NULL_TREE
, 1);
6163 newtype
= build_exception_variant
6164 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6165 deltype
= build_exception_variant
6166 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6167 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6168 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6169 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6170 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6174 = define_function ("__pure_virtual", void_ftype
,
6175 NOT_BUILT_IN
, 0, 0);
6177 /* Perform other language dependent initializations. */
6178 init_class_processing ();
6179 init_init_processing ();
6180 init_search_processing ();
6182 init_rtti_processing ();
6184 if (flag_exceptions
)
6185 init_exception_processing ();
6188 flag_inline_functions
= 0;
6191 if (! supports_one_only ())
6194 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6195 declare_function_name ();
6197 /* Prepare to check format strings against argument lists. */
6198 init_function_format_info ();
6200 /* Show we use EH for cleanups. */
6201 using_eh_for_cleanups ();
6203 print_error_function
= lang_print_error_function
;
6204 lang_get_alias_set
= &c_get_alias_set
;
6207 /* Function to print any language-specific context for an error message. */
6210 lang_print_error_function (file
)
6213 default_print_error_function (file
);
6214 maybe_print_template_context ();
6217 /* Make a definition for a builtin function named NAME and whose data type
6218 is TYPE. TYPE should be a function type with argument types.
6219 FUNCTION_CODE tells later passes how to compile calls to this function.
6220 See tree.h for its possible values.
6222 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6223 the name to be called if we can't opencode the function. */
6226 define_function (name
, type
, function_code
, pfn
, library_name
)
6229 enum built_in_function function_code
;
6230 void (*pfn
) PROTO((tree
));
6233 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6234 DECL_EXTERNAL (decl
) = 1;
6235 TREE_PUBLIC (decl
) = 1;
6236 DECL_ARTIFICIAL (decl
) = 1;
6238 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6239 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6241 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6242 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6243 function in the namespace. */
6244 if (pfn
) (*pfn
) (decl
);
6246 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6247 make_function_rtl (decl
);
6248 if (function_code
!= NOT_BUILT_IN
)
6250 DECL_BUILT_IN (decl
) = 1;
6251 DECL_FUNCTION_CODE (decl
) = function_code
;
6256 /* Called when a declaration is seen that contains no names to declare.
6257 If its type is a reference to a structure, union or enum inherited
6258 from a containing scope, shadow that tag name for the current scope
6259 with a forward reference.
6260 If its type defines a new named structure or union
6261 or defines an enum, it is valid but we need not do anything here.
6262 Otherwise, it is an error.
6264 C++: may have to grok the declspecs to learn about static,
6265 complain for anonymous unions. */
6268 shadow_tag (declspecs
)
6272 tree ob_modifier
= NULL_TREE
;
6274 register enum tree_code code
, ok_code
= ERROR_MARK
;
6275 register tree t
= NULL_TREE
;
6277 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6279 register tree value
= TREE_VALUE (link
);
6281 code
= TREE_CODE (value
);
6282 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6284 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6286 maybe_process_partial_specialization (value
);
6292 else if (value
== ridpointers
[(int) RID_STATIC
]
6293 || value
== ridpointers
[(int) RID_EXTERN
]
6294 || value
== ridpointers
[(int) RID_AUTO
]
6295 || value
== ridpointers
[(int) RID_REGISTER
]
6296 || value
== ridpointers
[(int) RID_INLINE
]
6297 || value
== ridpointers
[(int) RID_VIRTUAL
]
6298 || value
== ridpointers
[(int) RID_EXPLICIT
])
6299 ob_modifier
= value
;
6302 /* This is where the variables in an anonymous union are
6303 declared. An anonymous union declaration looks like:
6305 because there is no declarator after the union, the parser
6306 sends that declaration here. */
6307 if (ok_code
== UNION_TYPE
6309 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6310 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6311 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6312 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6314 /* See also grok_x_components. */
6317 /* Wipe out memory of synthesized methods */
6318 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6319 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6320 TYPE_HAS_INIT_REF (t
) = 0;
6321 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6322 TYPE_HAS_ASSIGN_REF (t
) = 0;
6323 TYPE_HAS_ASSIGNMENT (t
) = 0;
6324 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6326 q
= &TYPE_METHODS (t
);
6329 if (DECL_ARTIFICIAL (*q
))
6330 *q
= TREE_CHAIN (*q
);
6332 q
= &TREE_CHAIN (*q
);
6335 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6336 function members. */
6337 if (TYPE_METHODS (t
))
6338 error ("an anonymous union cannot have function members");
6340 if (TYPE_FIELDS (t
))
6342 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6344 finish_anon_union (decl
);
6349 /* Anonymous unions are objects, that's why we only check for
6350 inappropriate specifiers in this branch. */
6354 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6355 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6356 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6357 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6358 cp_error ("`%D' can only be specified for constructors",
6361 cp_error ("`%D' can only be specified for objects and functions",
6366 cp_error ("abstract declarator used as declaration");
6367 else if (found_tag
> 1)
6368 pedwarn ("multiple types in one declaration");
6372 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6375 groktypename (typename
)
6378 if (TREE_CODE (typename
) != TREE_LIST
)
6380 return grokdeclarator (TREE_VALUE (typename
),
6381 TREE_PURPOSE (typename
),
6382 TYPENAME
, 0, NULL_TREE
);
6385 /* Decode a declarator in an ordinary declaration or data definition.
6386 This is called as soon as the type information and variable name
6387 have been parsed, before parsing the initializer if any.
6388 Here we create the ..._DECL node, fill in its type,
6389 and put it on the list of decls for the current context.
6390 The ..._DECL node is returned as the value.
6392 Exception: for arrays where the length is not specified,
6393 the type is left null, to be filled in by `cp_finish_decl'.
6395 Function definitions do not come here; they go to start_function
6396 instead. However, external and forward declarations of functions
6397 do go through here. Structure field declarations are done by
6398 grokfield and not through here. */
6400 /* Set this to zero to debug not using the temporary obstack
6401 to parse initializers. */
6402 int debug_temp_inits
= 1;
6405 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6406 tree declarator
, declspecs
;
6408 tree attributes
, prefix_attributes
;
6411 register tree type
, tem
;
6413 extern int have_extern_spec
;
6414 extern int used_extern_spec
;
6417 /* See code below that used this. */
6418 int init_written
= initialized
;
6421 /* This should only be done once on the top most decl. */
6422 if (have_extern_spec
&& !used_extern_spec
)
6424 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6426 used_extern_spec
= 1;
6429 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6431 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6434 type
= TREE_TYPE (decl
);
6436 /* Don't lose if destructors must be executed at file-level. */
6437 if (! processing_template_decl
&& TREE_STATIC (decl
)
6438 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6439 && !TREE_PERMANENT (decl
))
6441 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6442 decl
= copy_node (decl
);
6443 if (TREE_CODE (type
) == ARRAY_TYPE
)
6445 tree itype
= TYPE_DOMAIN (type
);
6446 if (itype
&& ! TREE_PERMANENT (itype
))
6448 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6449 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6450 TREE_TYPE (decl
) = type
;
6457 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6458 ? DECL_CLASS_CONTEXT (decl
)
6459 : DECL_CONTEXT (decl
);
6461 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6462 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6464 /* When parsing the initializer, lookup should use the object's
6466 push_decl_namespace (context
);
6469 /* We are only interested in class contexts, later. */
6470 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6471 context
= NULL_TREE
;
6474 /* Is it valid for this decl to have an initializer at all?
6475 If not, set INITIALIZED to zero, which will indirectly
6476 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6477 switch (TREE_CODE (decl
))
6480 /* typedef foo = bar means give foo the same type as bar.
6481 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6482 Any other case of an initialization in a TYPE_DECL is an error. */
6483 if (pedantic
|| list_length (declspecs
) > 1)
6485 cp_error ("typedef `%D' is initialized", decl
);
6491 cp_error ("function `%#D' is initialized like a variable", decl
);
6496 if (! processing_template_decl
)
6498 if (type
!= error_mark_node
)
6500 if (TYPE_SIZE (type
) != NULL_TREE
6501 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6504 ("variable-sized object `%D' may not be initialized",
6509 if (TREE_CODE (type
) == ARRAY_TYPE
6510 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6513 ("elements of array `%#D' have incomplete type", decl
);
6522 if (! toplevel_bindings_p ()
6523 && DECL_EXTERNAL (decl
))
6524 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6526 DECL_EXTERNAL (decl
) = 0;
6527 if (toplevel_bindings_p ())
6528 TREE_STATIC (decl
) = 1;
6530 /* Tell `pushdecl' this is an initialized decl
6531 even though we don't yet have the initializer expression.
6532 Also tell `cp_finish_decl' it may store the real initializer. */
6533 DECL_INITIAL (decl
) = error_mark_node
;
6536 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6538 if (TREE_CODE (decl
) == VAR_DECL
)
6540 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6541 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6542 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6545 if (DECL_CONTEXT (field
) != context
)
6547 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6548 DECL_CONTEXT (field
), DECL_NAME (decl
),
6549 context
, DECL_NAME (decl
));
6550 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6552 /* Static data member are tricky; an in-class initialization
6553 still doesn't provide a definition, so the in-class
6554 declaration will have DECL_EXTERNAL set, but will have an
6555 initialization. Thus, duplicate_decls won't warn
6556 about this situation, and so we check here. */
6557 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6558 cp_error ("duplicate initialization of %D", decl
);
6559 if (duplicate_decls (decl
, field
))
6565 tree field
= check_classfn (context
, decl
);
6566 if (field
&& duplicate_decls (decl
, field
))
6570 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6571 DECL_IN_AGGR_P (decl
) = 0;
6572 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6573 || CLASSTYPE_USE_TEMPLATE (context
))
6574 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6576 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6577 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6580 pushclass (context
, 2);
6583 /* Set attributes here so if duplicate decl, will have proper attributes. */
6584 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6586 /* Add this decl to the current binding level, but not if it
6587 comes from another scope, e.g. a static member variable.
6588 TEM may equal DECL or it may be a previous decl of the same name. */
6590 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6591 /* Definitions of namespace members outside their namespace are
6593 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6594 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6595 || TREE_CODE (type
) == LANG_TYPE
6596 /* The declaration of template specializations does not affect
6597 the functions available for overload resolution, so we do not
6599 || (TREE_CODE (decl
) == FUNCTION_DECL
6600 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6603 tem
= pushdecl (decl
);
6605 if (processing_template_decl
)
6607 if (! current_function_decl
)
6608 tem
= push_template_decl (tem
);
6609 else if (minimal_parse_mode
)
6611 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6612 copy_to_permanent (declspecs
),
6617 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6618 /* Tell the back-end to use or not use .common as appropriate. If we say
6619 -fconserve-space, we want this to save .data space, at the expense of
6620 wrong semantics. If we say -fno-conserve-space, we want this to
6621 produce errors about redefs; to do this we force variables into the
6623 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6626 if (! processing_template_decl
)
6629 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6630 push_obstacks_nochange ();
6632 /* [basic.link]: A name with no linkage (notably, the name of a class or
6633 enumeration declared in a local scope) shall not be used to declare an
6634 entity with linkage.
6636 Only check this for public decls for now. */
6637 if (TREE_PUBLIC (tem
))
6639 tree t
= no_linkage_check (TREE_TYPE (tem
));
6642 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
6644 if (TREE_CODE (tem
) == FUNCTION_DECL
)
6645 cp_pedwarn ("public decl `%#D' uses anonymous type", tem
);
6648 cp_pedwarn ("non-local decl `%#D' uses local type `%T'", tem
, t
);
6653 /* We have no way of knowing whether the initializer will need to be
6654 evaluated at run-time or not until we've parsed it, so let's just put
6655 it in the permanent obstack. (jason) */
6657 && ! (TREE_CODE (tem
) == PARM_DECL
6658 || (TREE_READONLY (tem
)
6659 && (TREE_CODE (tem
) == VAR_DECL
6660 || TREE_CODE (tem
) == FIELD_DECL
))))
6662 /* When parsing and digesting the initializer,
6663 use temporary storage. Do this even if we will ignore the value. */
6664 if (toplevel_bindings_p () && debug_temp_inits
)
6666 if (processing_template_decl
6667 || TYPE_NEEDS_CONSTRUCTING (type
)
6668 || TREE_CODE (type
) == REFERENCE_TYPE
)
6669 /* In this case, the initializer must lay down in permanent
6670 storage, since it will be saved until `finish_file' is run. */
6673 temporary_allocation ();
6685 tree type
= TREE_TYPE (decl
);
6686 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6688 /* If this type of object needs a cleanup, and control may
6689 jump past it, make a new binding level so that it is cleaned
6690 up only when it is initialized first. */
6691 if (TYPE_NEEDS_DESTRUCTOR (type
)
6692 && current_binding_level
->more_cleanups_ok
== 0)
6693 pushlevel_temporary (1);
6696 /* Is it valid for this decl to have an initializer at all?
6697 If not, set INITIALIZED to zero, which will indirectly
6698 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6700 /* Don't allow initializations for incomplete types except for
6701 arrays which might be completed by the initialization. */
6702 if (type
== error_mark_node
)
6703 ; /* Don't complain again. */
6704 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6705 ; /* A complete type is ok. */
6706 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6708 cp_error ("variable `%#D' has initializer but incomplete type",
6711 type
= TREE_TYPE (decl
) = error_mark_node
;
6713 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6715 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6716 cp_error ("elements of array `%#D' have incomplete type", decl
);
6717 /* else we already gave an error in start_decl. */
6723 && TREE_CODE (decl
) != TYPE_DECL
6724 && TREE_CODE (decl
) != TEMPLATE_DECL
6725 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6727 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6728 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6730 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6732 /* Change the type so that assemble_variable will give
6733 DECL an rtl we can live with: (mem (const_int 0)). */
6734 type
= TREE_TYPE (decl
) = error_mark_node
;
6738 /* If any base type in the hierarchy of TYPE needs a constructor,
6739 then we set initialized to 1. This way any nodes which are
6740 created for the purposes of initializing this aggregate
6741 will live as long as it does. This is necessary for global
6742 aggregates which do not have their initializers processed until
6743 the end of the file. */
6744 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6749 /* We don't do this yet for GNU C++. */
6750 /* For a local variable, define the RTL now. */
6751 if (! toplevel_bindings_p ()
6752 /* But not if this is a duplicate decl
6753 and we preserved the rtl from the previous one
6754 (which may or may not happen). */
6755 && DECL_RTL (tem
) == NULL_RTX
)
6757 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6759 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6760 && DECL_INITIAL (tem
) != NULL_TREE
)
6766 DECL_INITIAL (decl
) = NULL_TREE
;
6769 /* Handle initialization of references.
6770 These three arguments are from `cp_finish_decl', and have the
6771 same meaning here that they do there.
6773 Quotes on semantics can be found in ARM 8.4.3. */
6776 grok_reference_init (decl
, type
, init
)
6777 tree decl
, type
, init
;
6781 if (init
== NULL_TREE
)
6783 if ((DECL_LANG_SPECIFIC (decl
) == 0
6784 || DECL_IN_AGGR_P (decl
) == 0)
6785 && ! DECL_THIS_EXTERN (decl
))
6787 cp_error ("`%D' declared as reference but not initialized", decl
);
6788 if (TREE_CODE (decl
) == VAR_DECL
)
6789 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6794 if (init
== error_mark_node
)
6797 if (TREE_CODE (type
) == REFERENCE_TYPE
6798 && TREE_CODE (init
) == CONSTRUCTOR
)
6800 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6804 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6805 /* decay_conversion is probably wrong for references to functions. */
6806 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6808 if (TREE_CODE (init
) == TREE_LIST
)
6809 init
= build_compound_expr (init
);
6811 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6812 init
= convert_from_reference (init
);
6814 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6815 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6817 /* Note: default conversion is only called in very special cases. */
6818 init
= default_conversion (init
);
6821 tmp
= convert_to_reference
6822 (type
, init
, CONV_IMPLICIT
,
6823 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6825 if (tmp
== error_mark_node
)
6827 else if (tmp
!= NULL_TREE
)
6830 DECL_INITIAL (decl
) = save_expr (init
);
6834 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6838 /* ?? Can this be optimized in some cases to
6839 hand back the DECL_INITIAL slot?? */
6840 if (TYPE_SIZE (TREE_TYPE (type
)))
6842 init
= convert_from_reference (decl
);
6843 if (TREE_PERMANENT (decl
))
6844 init
= copy_to_permanent (init
);
6845 SET_DECL_REFERENCE_SLOT (decl
, init
);
6848 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6850 expand_static_init (decl
, DECL_INITIAL (decl
));
6851 DECL_INITIAL (decl
) = NULL_TREE
;
6856 if (TREE_CODE (decl
) == VAR_DECL
)
6857 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6861 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6862 mucking with forces it does not comprehend (i.e. initialization with a
6863 constructor). If we are at global scope and won't go into COMMON, fill
6864 it in with a dummy CONSTRUCTOR to force the variable into .data;
6865 otherwise we can use error_mark_node. */
6868 obscure_complex_init (decl
, init
)
6871 if (! flag_no_inline
&& TREE_STATIC (decl
))
6873 if (extract_init (decl
, init
))
6877 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6878 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6879 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6883 DECL_INITIAL (decl
) = error_mark_node
;
6888 /* Finish processing of a declaration;
6889 install its line number and initial value.
6890 If the length of an array type is not known before,
6891 it must be determined now, from the initial value, or it is an error.
6893 Call `pop_obstacks' iff NEED_POP is nonzero.
6895 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6896 for aggregates that have constructors alive on the permanent obstack,
6897 so that the global initializing functions can be written at the end.
6899 INIT0 holds the value of an initializer that should be allowed to escape
6902 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6903 if the (init) syntax was used.
6905 For functions that take default parameters, DECL points to its
6906 "maximal" instantiation. `cp_finish_decl' must then also declared its
6907 subsequently lower and lower forms of instantiation, checking for
6908 ambiguity as it goes. This can be sped up later. */
6911 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6918 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
6920 int temporary
= allocation_temporary_p ();
6921 char *asmspec
= NULL
;
6922 int was_readonly
= 0;
6923 int already_used
= 0;
6925 /* If this is 0, then we did not change obstacks. */
6929 error ("assignment (not initialization) in declaration");
6933 /* If a name was specified, get the string. */
6935 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6937 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
6939 cp_error ("Cannot initialize `%D' to namespace `%D'",
6944 if (TREE_CODE (decl
) == VAR_DECL
6945 && DECL_CONTEXT (decl
)
6946 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
6947 && DECL_CONTEXT (decl
) != current_namespace
6950 /* Leave the namespace of the object. */
6951 pop_decl_namespace ();
6954 /* If the type of the thing we are declaring either has
6955 a constructor, or has a virtual function table pointer,
6956 AND its initialization was accepted by `start_decl',
6957 then we stayed on the permanent obstack through the
6958 declaration, otherwise, changed obstacks as GCC would. */
6960 type
= TREE_TYPE (decl
);
6962 if (type
== error_mark_node
)
6964 if (toplevel_bindings_p () && temporary
)
6965 end_temporary_allocation ();
6970 if (processing_template_decl
)
6972 if (init
&& DECL_INITIAL (decl
))
6973 DECL_INITIAL (decl
) = init
;
6974 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
6976 tree stmt
= DECL_VINDEX (decl
);
6977 /* If the decl is declaring a member of a local class (in a
6978 template function), the DECL_VINDEX will either be NULL,
6979 or it will be an actual virtual function index, not a
6981 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
6983 DECL_VINDEX (decl
) = NULL_TREE
;
6984 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
6991 /* Take care of TYPE_DECLs up front. */
6992 if (TREE_CODE (decl
) == TYPE_DECL
)
6994 if (init
&& DECL_INITIAL (decl
))
6996 /* typedef foo = bar; store the type of bar as the type of foo. */
6997 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
6998 DECL_INITIAL (decl
) = init
= NULL_TREE
;
7000 if (type
!= error_mark_node
7001 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
7003 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
7004 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
7005 set_identifier_type_value (DECL_NAME (decl
), type
);
7006 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7008 GNU_xref_decl (current_function_decl
, decl
);
7010 /* If we have installed this as the canonical typedef for this
7011 type, and that type has not been defined yet, delay emitting
7012 the debug information for it, as we will emit it later. */
7013 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7014 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7015 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7017 rest_of_decl_compilation (decl
, NULL_PTR
,
7018 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7021 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7023 ttype
= target_type (type
);
7026 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7027 && TYPE_NEEDS_CONSTRUCTING (type
))
7030 /* Currently, GNU C++ puts constants in text space, making them
7031 impossible to initialize. In the future, one would hope for
7032 an operating system which understood the difference between
7033 initialization and the running of a program. */
7035 TREE_READONLY (decl
) = 0;
7038 if (TREE_CODE (decl
) == FIELD_DECL
)
7040 if (init
&& init
!= error_mark_node
)
7041 my_friendly_assert (TREE_PERMANENT (init
), 147);
7045 /* This must override the asm specifier which was placed
7046 by grokclassfn. Lay this out fresh. */
7047 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7048 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7049 make_decl_rtl (decl
, asmspec
, 0);
7052 /* If `start_decl' didn't like having an initialization, ignore it now. */
7053 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7055 else if (DECL_EXTERNAL (decl
))
7057 else if (TREE_CODE (type
) == REFERENCE_TYPE
7058 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7060 if (TREE_STATIC (decl
))
7061 make_decl_rtl (decl
, NULL_PTR
,
7062 toplevel_bindings_p ()
7063 || pseudo_global_level_p ());
7064 grok_reference_init (decl
, type
, init
);
7068 GNU_xref_decl (current_function_decl
, decl
);
7070 if (TREE_CODE (decl
) == FIELD_DECL
)
7072 else if (TREE_CODE (decl
) == CONST_DECL
)
7074 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7076 DECL_INITIAL (decl
) = init
;
7078 /* This will keep us from needing to worry about our obstacks. */
7079 my_friendly_assert (init
!= NULL_TREE
, 149);
7084 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7086 if (TREE_CODE (type
) == ARRAY_TYPE
)
7087 init
= digest_init (type
, init
, (tree
*) 0);
7088 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7090 if (TYPE_NON_AGGREGATE_CLASS (type
))
7092 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7094 init
= error_mark_node
;
7097 goto dont_use_constructor
;
7102 dont_use_constructor
:
7103 if (TREE_CODE (init
) != TREE_VEC
)
7104 init
= store_init_value (decl
, init
);
7108 /* We must hide the initializer so that expand_decl
7109 won't try to do something it does not understand. */
7110 init
= obscure_complex_init (decl
, init
);
7112 else if (DECL_EXTERNAL (decl
))
7114 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7115 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7118 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7119 ctype
= TREE_TYPE (ctype
);
7120 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7122 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7123 cp_error ("structure `%D' with uninitialized const members", decl
);
7124 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7125 cp_error ("structure `%D' with uninitialized reference members",
7129 if (TREE_CODE (decl
) == VAR_DECL
7130 && !DECL_INITIAL (decl
)
7131 && !TYPE_NEEDS_CONSTRUCTING (type
)
7132 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7133 cp_error ("uninitialized const `%D'", decl
);
7135 if (TYPE_SIZE (type
) != NULL_TREE
7136 && TYPE_NEEDS_CONSTRUCTING (type
))
7137 init
= obscure_complex_init (decl
, NULL_TREE
);
7139 else if (TREE_CODE (decl
) == VAR_DECL
7140 && TREE_CODE (type
) != REFERENCE_TYPE
7141 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7143 /* ``Unless explicitly declared extern, a const object does not have
7144 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7145 However, if it's `const int foo = 1; const int foo;', don't complain
7146 about the second decl, since it does have an initializer before.
7147 We deliberately don't complain about arrays, because they're
7148 supposed to be initialized by a constructor. */
7149 if (! DECL_INITIAL (decl
)
7150 && TREE_CODE (type
) != ARRAY_TYPE
7151 && (!pedantic
|| !current_class_type
))
7152 cp_error ("uninitialized const `%#D'", decl
);
7155 /* For top-level declaration, the initial value was read in
7156 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7157 must go in the permanent obstack; but don't discard the
7158 temporary data yet. */
7160 if (toplevel_bindings_p () && temporary
)
7161 end_temporary_allocation ();
7163 /* Deduce size of array from initialization, if not already known. */
7165 if (TREE_CODE (type
) == ARRAY_TYPE
7166 && TYPE_DOMAIN (type
) == NULL_TREE
7167 && TREE_CODE (decl
) != TYPE_DECL
)
7170 = (TREE_STATIC (decl
)
7171 /* Even if pedantic, an external linkage array
7172 may have incomplete type at first. */
7173 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7174 : !DECL_EXTERNAL (decl
));
7175 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7176 int failure
= complete_array_type (type
, initializer
, do_default
);
7179 cp_error ("initializer fails to determine size of `%D'", decl
);
7184 cp_error ("array size missing in `%D'", decl
);
7185 /* If a `static' var's size isn't known, make it extern as
7186 well as static, so it does not get allocated. If it's not
7187 `static', then don't mark it extern; finish_incomplete_decl
7188 will give it a default size and it will get allocated. */
7189 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7190 DECL_EXTERNAL (decl
) = 1;
7193 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7194 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7196 cp_error ("zero-size array `%D'", decl
);
7198 layout_decl (decl
, 0);
7201 if (TREE_CODE (decl
) == VAR_DECL
)
7203 if (DECL_SIZE (decl
) == NULL_TREE
7204 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7205 layout_decl (decl
, 0);
7207 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7209 /* A static variable with an incomplete type:
7210 that is an error if it is initialized.
7211 Otherwise, let it through, but if it is not `extern'
7212 then it may cause an error message later. */
7213 if (DECL_INITIAL (decl
) != NULL_TREE
)
7214 cp_error ("storage size of `%D' isn't known", decl
);
7217 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7219 /* An automatic variable with an incomplete type: that is an error.
7220 Don't talk about array types here, since we took care of that
7221 message in grokdeclarator. */
7222 cp_error ("storage size of `%D' isn't known", decl
);
7223 TREE_TYPE (decl
) = error_mark_node
;
7225 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7226 /* Let debugger know it should output info for this type. */
7227 note_debug_info_needed (ttype
);
7229 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7230 note_debug_info_needed (DECL_CONTEXT (decl
));
7232 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7233 && DECL_SIZE (decl
) != NULL_TREE
7234 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7236 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7237 constant_expression_warning (DECL_SIZE (decl
));
7239 cp_error ("storage size of `%D' isn't constant", decl
);
7242 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7243 /* Cleanups for static variables are handled by `finish_file'. */
7244 && ! TREE_STATIC (decl
))
7246 int yes
= suspend_momentary ();
7247 cleanup
= maybe_build_cleanup (decl
);
7248 resume_momentary (yes
);
7251 /* PARM_DECLs get cleanups, too. */
7252 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7255 end_temporary_allocation ();
7256 cleanup
= maybe_build_cleanup (decl
);
7258 resume_temporary_allocation ();
7261 /* Output the assembler code and/or RTL code for variables and functions,
7262 unless the type is an undefined structure or union.
7263 If not, it will get done when the type is completed. */
7265 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7267 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7268 || TREE_CODE (decl
) == RESULT_DECL
)
7270 /* ??? FIXME: What about nested classes? */
7271 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7273 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7274 && allocation_temporary_p ());
7277 end_temporary_allocation ();
7279 /* Extern inline function static data has external linkage.
7280 Instead of trying to deal with that, we disable inlining of
7281 such functions. The ASM_WRITTEN check is to avoid hitting this
7282 for __FUNCTION__. */
7283 if (TREE_CODE (decl
) == VAR_DECL
7284 && TREE_STATIC (decl
)
7285 && ! TREE_ASM_WRITTEN (decl
)
7286 && current_function_decl
7287 && DECL_CONTEXT (decl
) == current_function_decl
7288 && DECL_THIS_INLINE (current_function_decl
)
7289 && TREE_PUBLIC (current_function_decl
))
7291 current_function_cannot_inline
7292 = "function with static variable cannot be inline";
7295 else if (TREE_CODE (decl
) == VAR_DECL
7296 && DECL_LANG_SPECIFIC (decl
)
7297 && DECL_COMDAT (decl
))
7299 /* Dynamically initialized vars go into common. */
7300 if (DECL_INITIAL (decl
) == NULL_TREE
7301 || DECL_INITIAL (decl
) == error_mark_node
)
7302 DECL_COMMON (decl
) = 1;
7303 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7305 DECL_COMMON (decl
) = 1;
7306 DECL_INITIAL (decl
) = error_mark_node
;
7310 /* Statically initialized vars are weak or comdat, if
7313 make_decl_one_only (decl
);
7316 /* We can't do anything useful; leave vars for explicit
7318 DECL_EXTERNAL (decl
) = 1;
7319 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7324 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7325 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7326 else if (TREE_CODE (decl
) == VAR_DECL
7327 && TREE_READONLY (decl
)
7328 && DECL_INITIAL (decl
) != NULL_TREE
7329 && DECL_INITIAL (decl
) != error_mark_node
7330 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7332 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7335 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7338 && TREE_STATIC (decl
)
7339 && ! TREE_SIDE_EFFECTS (decl
)
7340 && ! TREE_PUBLIC (decl
)
7341 && ! DECL_EXTERNAL (decl
)
7342 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7343 && DECL_MODE (decl
) != BLKmode
)
7345 /* If this variable is really a constant, then fill its DECL_RTL
7346 slot with something which won't take up storage.
7347 If something later should take its address, we can always give
7348 it legitimate RTL at that time. */
7349 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7350 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7351 TREE_ASM_WRITTEN (decl
) = 1;
7353 else if (toplev
&& ! TREE_PUBLIC (decl
))
7355 /* If this is a static const, change its apparent linkage
7356 if it belongs to a #pragma interface. */
7357 if (!interface_unknown
)
7359 TREE_PUBLIC (decl
) = 1;
7360 DECL_EXTERNAL (decl
) = interface_only
;
7362 make_decl_rtl (decl
, asmspec
, toplev
);
7365 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7367 else if (TREE_CODE (decl
) == VAR_DECL
7368 && DECL_LANG_SPECIFIC (decl
)
7369 && DECL_IN_AGGR_P (decl
))
7371 if (TREE_STATIC (decl
))
7373 if (init
== NULL_TREE
7374 #ifdef DEFAULT_STATIC_DEFS
7375 /* If this code is dead, then users must
7376 explicitly declare static member variables
7377 outside the class def'n as well. */
7378 && TYPE_NEEDS_CONSTRUCTING (type
)
7382 DECL_EXTERNAL (decl
) = 1;
7383 make_decl_rtl (decl
, asmspec
, 1);
7386 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7389 /* Just a constant field. Should not need any rtl. */
7393 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7396 resume_temporary_allocation ();
7398 if (type
!= error_mark_node
7399 && TYPE_LANG_SPECIFIC (type
)
7400 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7401 abstract_virtuals_error (decl
, type
);
7402 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7403 || TREE_CODE (type
) == METHOD_TYPE
)
7404 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7405 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7406 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7408 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7409 signature_error (decl
, type
);
7410 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7411 || TREE_CODE (type
) == METHOD_TYPE
)
7412 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7413 && IS_SIGNATURE (TREE_TYPE (type
)))
7414 signature_error (decl
, TREE_TYPE (type
));
7416 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7418 else if (DECL_EXTERNAL (decl
)
7419 && ! (DECL_LANG_SPECIFIC (decl
)
7420 && DECL_NOT_REALLY_EXTERN (decl
)))
7423 DECL_INITIAL (decl
) = init
;
7425 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7427 /* Cleanups for static variables are handled by `finish_file'. */
7428 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7429 || TYPE_NEEDS_DESTRUCTOR (type
))
7430 expand_static_init (decl
, init
);
7434 /* This is a declared decl which must live until the
7435 end of the binding contour. It may need a cleanup. */
7437 /* Recompute the RTL of a local array now
7438 if it used to be an incomplete type. */
7439 if (was_incomplete
&& ! TREE_STATIC (decl
))
7441 /* If we used it already as memory, it must stay in memory. */
7442 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7443 /* If it's still incomplete now, no init will save it. */
7444 if (DECL_SIZE (decl
) == NULL_TREE
)
7445 DECL_INITIAL (decl
) = NULL_TREE
;
7448 else if (! TREE_ASM_WRITTEN (decl
)
7449 && (TYPE_SIZE (type
) != NULL_TREE
7450 || TREE_CODE (type
) == ARRAY_TYPE
))
7452 /* Do this here, because we did not expand this decl's
7453 rtl in start_decl. */
7454 if (DECL_RTL (decl
) == NULL_RTX
)
7458 /* XXX: Why don't we use decl here? */
7459 /* Ans: Because it was already expanded? */
7460 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7461 cp_error ("parser lost in parsing declaration of `%D'",
7463 /* Cleanup used up here. */
7464 cleanup
= NULL_TREE
;
7468 if (current_binding_level
->is_for_scope
)
7470 struct binding_level
*outer
= current_binding_level
->level_chain
;
7472 /* Check to see if the same name is already bound at
7473 the outer level, either because it was directly declared,
7474 or because a dead for-decl got preserved. In either case,
7475 the code would not have been valid under the ARM
7476 scope rules, so clear is_for_scope for the
7477 current_binding_level.
7479 Otherwise, we need to preserve the temp slot for decl
7480 to last into the outer binding level. */
7482 int handling_dead_for_vars
= 0;
7483 tree link
= outer
->names
;
7484 for (; ; link
= TREE_CHAIN (link
))
7486 if (link
== NULL
&& handling_dead_for_vars
== 0)
7488 link
= outer
->dead_vars_from_for
;
7489 handling_dead_for_vars
= 1;
7493 if (DECL_IN_MEMORY_P (decl
))
7494 preserve_temp_slots (DECL_RTL (decl
));
7497 if (DECL_NAME (link
) == DECL_NAME (decl
))
7499 if (handling_dead_for_vars
)
7502 = purpose_member (DECL_NAME (decl
),
7503 current_binding_level
->shadowed
);
7504 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7505 TREE_VALUE (shadowing
)
7506 = DECL_SHADOWED_FOR_VAR (link
);
7508 current_binding_level
->is_for_scope
= 0;
7514 expand_start_target_temps ();
7516 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7518 /* Compute and store the initial value. */
7519 expand_decl_init (decl
);
7520 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7522 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7524 emit_line_note (DECL_SOURCE_FILE (decl
),
7525 DECL_SOURCE_LINE (decl
));
7526 expand_aggr_init (decl
, init
, 0, flags
);
7529 /* Set this to 0 so we can tell whether an aggregate which
7530 was initialized was ever used. Don't do this if it has a
7531 destructor, so we don't complain about the 'resource
7532 allocation is initialization' idiom. */
7533 /* Now set attribute((unused)) on types so decls of
7534 that type will be marked used. (see TREE_USED, above.)
7535 This avoids the warning problems this particular code
7536 tried to work around. */
7538 if (TYPE_NEEDS_CONSTRUCTING (type
)
7540 && cleanup
== NULL_TREE
7541 && DECL_NAME (decl
))
7542 TREE_USED (decl
) = 0;
7545 TREE_USED (decl
) = 1;
7548 /* Cleanup any temporaries needed for the initial value. */
7549 expand_end_target_temps ();
7551 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7553 /* Store the cleanup, if there was one. */
7556 if (! expand_decl_cleanup (decl
, cleanup
))
7557 cp_error ("parser lost in parsing declaration of `%D'",
7564 /* Undo call to `pushclass' that was done in `start_decl'
7565 due to initialization of qualified member variable.
7566 I.e., Foo::x = 10; */
7568 tree context
= DECL_REAL_CONTEXT (decl
);
7570 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7571 && (TREE_CODE (decl
) == VAR_DECL
7572 /* We also have a pushclass done that we need to undo here
7573 if we're at top level and declare a method. */
7574 || TREE_CODE (decl
) == FUNCTION_DECL
)
7575 /* If size hasn't been set, we're still defining it,
7576 and therefore inside the class body; don't pop
7577 the binding level.. */
7578 && TYPE_SIZE (context
) != NULL_TREE
7579 && context
== current_class_type
)
7586 /* If requested, warn about definitions of large data objects. */
7588 if (warn_larger_than
7589 && ! processing_template_decl
7590 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7591 && !DECL_EXTERNAL (decl
))
7593 register tree decl_size
= DECL_SIZE (decl
);
7595 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7597 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7599 if (units
> larger_than_size
)
7600 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7606 /* Resume permanent allocation, if not within a function. */
7607 /* The corresponding push_obstacks_nochange is in start_decl,
7608 start_method, groktypename, and in grokfield. */
7613 TREE_READONLY (decl
) = 1;
7616 /* This is here for a midend callback from c-common.c */
7619 finish_decl (decl
, init
, asmspec_tree
)
7623 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7627 expand_static_init (decl
, init
)
7631 tree oldstatic
= value_member (decl
, static_aggregates
);
7635 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7636 cp_error ("multiple initializations given for `%D'", decl
);
7638 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7640 /* Emit code to perform this initialization but once. */
7643 /* Remember this information until end of file. */
7644 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7646 /* Emit code to perform this initialization but once. */
7647 temp
= get_temp_name (integer_type_node
, 1);
7648 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7649 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7650 integer_zero_node
, 1), 0);
7651 expand_start_target_temps ();
7653 expand_assignment (temp
, integer_one_node
, 0, 0);
7654 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7655 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7657 expand_aggr_init (decl
, init
, 0, 0);
7658 do_pending_stack_adjust ();
7661 expand_assignment (decl
, init
, 0, 0);
7663 /* Cleanup any temporaries needed for the initial value. */
7664 expand_end_target_temps ();
7666 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7668 tree cleanup
, fcall
;
7669 static tree Atexit
= 0;
7672 tree atexit_fndecl
, PFV
, pfvlist
;
7673 /* Remember this information until end of file. */
7674 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7675 PFV
= build_pointer_type (build_function_type
7676 (void_type_node
, void_list_node
));
7678 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7680 push_lang_context (lang_name_c
);
7682 = builtin_function ("atexit",
7683 build_function_type (void_type_node
,
7685 NOT_BUILT_IN
, NULL_PTR
);
7686 assemble_external (atexit_fndecl
);
7687 Atexit
= default_conversion (atexit_fndecl
);
7688 pop_lang_context ();
7692 cleanup
= start_anon_func ();
7693 expand_expr_stmt (build_cleanup (decl
));
7695 mark_addressable (cleanup
);
7696 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7697 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7698 expand_expr_stmt (fcall
);
7702 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7704 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7705 TREE_STATIC (static_aggregates
) = 1;
7708 /* Resume old (possibly temporary) allocation. */
7713 /* This code takes into account memory allocation
7714 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7715 does not hold for this object, then we must make permanent
7716 the storage currently in the temporary obstack. */
7717 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7718 preserve_initializer ();
7719 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7723 /* Make TYPE a complete type based on INITIAL_VALUE.
7724 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7725 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7728 complete_array_type (type
, initial_value
, do_default
)
7729 tree type
, initial_value
;
7732 register tree maxindex
= NULL_TREE
;
7737 /* Note MAXINDEX is really the maximum index,
7738 one less than the size. */
7739 if (TREE_CODE (initial_value
) == STRING_CST
)
7742 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7743 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7746 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7748 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7749 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7750 for (; elts
; elts
= TREE_CHAIN (elts
))
7752 if (TREE_PURPOSE (elts
))
7753 maxindex
= TREE_PURPOSE (elts
);
7755 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7757 maxindex
= copy_node (maxindex
);
7761 /* Make an error message unless that happened already. */
7762 if (initial_value
!= error_mark_node
)
7765 /* Prevent further error messages. */
7766 maxindex
= build_int_2 (0, 0);
7773 maxindex
= build_int_2 (0, 0);
7781 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7782 if (! TREE_TYPE (maxindex
))
7783 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7785 itype
= TREE_TYPE (initial_value
);
7788 if (itype
&& !TYPE_DOMAIN (itype
))
7789 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7790 /* The type of the main variant should never be used for arrays
7791 of different sizes. It should only ever be completed with the
7792 size of the array. */
7793 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7794 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7797 /* Lay out the type now that we can get the real answer. */
7804 /* Return zero if something is declared to be a member of type
7805 CTYPE when in the context of CUR_TYPE. STRING is the error
7806 message to print in that case. Otherwise, quietly return 1. */
7809 member_function_or_else (ctype
, cur_type
, string
)
7810 tree ctype
, cur_type
;
7813 if (ctype
&& ctype
!= cur_type
)
7815 error (string
, TYPE_NAME_STRING (ctype
));
7821 /* Subroutine of `grokdeclarator'. */
7823 /* Generate errors possibly applicable for a given set of specifiers.
7824 This is for ARM $7.1.2. */
7827 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7830 int virtualp
, quals
, friendp
, raises
, inlinep
;
7833 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7835 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7837 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7840 cp_error_at ("invalid friend declaration", object
);
7842 cp_error_at ("invalid exception specifications", object
);
7845 /* CTYPE is class type, or null if non-class.
7846 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7848 DECLARATOR is the function's name.
7849 VIRTUALP is truthvalue of whether the function is virtual or not.
7850 FLAGS are to be passed through to `grokclassfn'.
7851 QUALS are qualifiers indicating whether the function is `const'
7853 RAISES is a list of exceptions that this function can raise.
7854 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7855 not look, and -1 if we should not call `grokclassfn' at all. */
7858 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7859 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7860 template_count
, in_namespace
)
7863 tree orig_declarator
;
7865 enum overload_flags flags
;
7866 tree quals
, raises
, attrlist
;
7867 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7871 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7875 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7876 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7882 type
= build_exception_variant (type
, raises
);
7885 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7886 /* Propagate volatile out from type to decl. */
7887 if (TYPE_VOLATILE (type
))
7888 TREE_THIS_VOLATILE (decl
) = 1;
7890 /* This decl is not from the current namespace. */
7892 set_decl_namespace (decl
, in_namespace
);
7894 /* Should probably propagate const out from type to decl I bet (mrs). */
7897 DECL_STATIC_FUNCTION_P (decl
) = 1;
7898 DECL_CONTEXT (decl
) = ctype
;
7902 DECL_CLASS_CONTEXT (decl
) = ctype
;
7904 if (ctype
== NULL_TREE
&& MAIN_NAME_P (declarator
))
7907 error ("cannot declare `main' to be inline");
7909 error ("cannot declare `main' to be static");
7914 /* Members of anonymous types have no linkage; make them internal. */
7915 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
7920 /* [basic.link]: A name with no linkage (notably, the name of a class
7921 or enumeration declared in a local scope) shall not be used to
7922 declare an entity with linkage.
7924 Only check this for public decls for now. */
7925 t
= no_linkage_check (TREE_TYPE (decl
));
7928 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
7929 cp_pedwarn ("function `%#D' uses anonymous type", decl
);
7931 cp_pedwarn ("function `%#D' uses local type `%T'", decl
, t
);
7935 TREE_PUBLIC (decl
) = publicp
;
7938 DECL_INTERFACE_KNOWN (decl
) = 1;
7939 DECL_NOT_REALLY_EXTERN (decl
) = 1;
7943 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7945 DECL_EXTERNAL (decl
) = 1;
7946 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7948 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7949 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7953 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7954 grok_op_properties (decl
, virtualp
, check
< 0);
7956 if (ctype
&& hack_decl_function_context (decl
))
7957 DECL_NO_STATIC_CHAIN (decl
) = 1;
7959 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
7960 if (TREE_PURPOSE (t
)
7961 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
7963 add_defarg_fn (decl
);
7968 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
7972 ("defining explicit specialization `%D' in friend declaration",
7976 /* A friend declaration of the form friend void f<>(). Record
7977 the information in the TEMPLATE_ID_EXPR. */
7978 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
7979 DECL_TEMPLATE_INFO (decl
)
7980 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
7981 TREE_OPERAND (orig_declarator
, 1),
7986 /* Caller will do the rest of this. */
7990 if (check
&& funcdef_flag
)
7991 DECL_INITIAL (decl
) = error_mark_node
;
7993 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
7996 /* Just handle constructors here. We could do this
7997 inside the following if stmt, but I think
7998 that the code is more legible by breaking this
7999 case out. See comments below for what each of
8000 the following calls is supposed to do. */
8001 DECL_CONSTRUCTOR_P (decl
) = 1;
8003 grokclassfn (ctype
, declarator
, decl
, flags
, quals
);
8005 decl
= check_explicit_specialization (orig_declarator
, decl
,
8007 2 * (funcdef_flag
!= 0) +
8008 4 * (friendp
!= 0));
8010 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (ctype
, decl
))
8013 tmp
= check_classfn (ctype
, decl
);
8015 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8016 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8018 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8019 cp_error ("definition of implicitly-declared `%D'", tmp
);
8020 if (tmp
&& duplicate_decls (decl
, tmp
))
8023 if (! grok_ctor_properties (ctype
, decl
))
8026 if (check
== 0 && ! current_function_decl
)
8028 /* Assembler names live in the global namespace. */
8029 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
8030 if (tmp
== NULL_TREE
)
8031 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8032 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8033 cp_error ("inconsistent declarations for `%D'", decl
);
8036 duplicate_decls (decl
, tmp
);
8039 make_decl_rtl (decl
, NULL_PTR
, 1);
8046 /* Function gets the ugly name, field gets the nice one.
8047 This call may change the type of the function (because
8048 of default parameters)! */
8049 if (ctype
!= NULL_TREE
)
8050 grokclassfn (ctype
, cname
, decl
, flags
, quals
);
8052 decl
= check_explicit_specialization (orig_declarator
, decl
,
8054 2 * (funcdef_flag
!= 0) +
8055 4 * (friendp
!= 0));
8056 if (ctype
!= NULL_TREE
8057 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (ctype
, decl
))
8060 tmp
= check_classfn (ctype
, decl
);
8062 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8063 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8065 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8066 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8068 /* Remove the `this' parm added by grokclassfn.
8069 XXX Isn't this done in start_function, too? */
8070 revert_static_member_fn (&decl
, NULL
, NULL
);
8071 last_function_parms
= TREE_CHAIN (last_function_parms
);
8073 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8074 cp_error ("definition of implicitly-declared `%D'", tmp
);
8077 if (!duplicate_decls (decl
, tmp
))
8078 my_friendly_abort (892);
8083 if (ctype
== NULL_TREE
|| check
)
8086 /* Now install the declaration of this function so that others may
8087 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8089 if (! current_function_decl
)
8091 if (!DECL_TEMPLATE_SPECIALIZATION (decl
))
8093 /* We don't do this for specializations since the
8094 equivalent checks will be done later. Also, at this
8095 point the DECL_ASSEMBLER_NAME is not yet fully
8098 /* FIXME: this should only need to look at
8099 IDENTIFIER_GLOBAL_VALUE. */
8100 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
8101 if (tmp
== NULL_TREE
)
8102 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8103 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8104 cp_error ("inconsistent declarations for `%D'", decl
);
8107 duplicate_decls (decl
, tmp
);
8113 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8114 TREE_VALUE (attrlist
));
8115 make_decl_rtl (decl
, NULL_PTR
, 1);
8119 DECL_VIRTUAL_P (decl
) = 1;
8120 if (DECL_VINDEX (decl
) == NULL_TREE
)
8121 DECL_VINDEX (decl
) = error_mark_node
;
8122 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8129 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8132 RID_BIT_TYPE
*specbits_in
;
8138 RID_BIT_TYPE specbits
;
8140 specbits
= *specbits_in
;
8142 if (TREE_CODE (type
) == OFFSET_TYPE
)
8144 /* If you declare a static member so that it
8145 can be initialized, the code will reach here. */
8146 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8147 type
= TREE_TYPE (type
);
8148 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8149 DECL_CONTEXT (decl
) = basetype
;
8150 DECL_CLASS_CONTEXT (decl
) = basetype
;
8151 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8155 tree context
= in_namespace
? in_namespace
: current_namespace
;
8156 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8157 if (context
!= global_namespace
&& namespace_bindings_p ()
8158 && current_lang_name
!= lang_name_c
)
8159 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8164 set_decl_namespace (decl
, in_namespace
);
8166 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8168 DECL_THIS_EXTERN (decl
) = 1;
8169 DECL_EXTERNAL (decl
) = !initialized
;
8172 /* In class context, static means one per class,
8173 public access, and static storage. */
8174 if (DECL_CLASS_SCOPE_P (decl
))
8176 TREE_PUBLIC (decl
) = 1;
8177 TREE_STATIC (decl
) = 1;
8178 DECL_EXTERNAL (decl
) = 0;
8180 /* At top level, either `static' or no s.c. makes a definition
8181 (perhaps tentative), and absence of `static' makes it public. */
8182 else if (toplevel_bindings_p ())
8184 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8185 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8186 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8188 /* Not at top level, only `static' makes a static definition. */
8191 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8192 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8195 if (TREE_PUBLIC (decl
))
8197 /* [basic.link]: A name with no linkage (notably, the name of a class
8198 or enumeration declared in a local scope) shall not be used to
8199 declare an entity with linkage.
8201 Only check this for public decls for now. */
8202 tree t
= no_linkage_check (TREE_TYPE (decl
));
8205 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8206 /* Ignore for now; `enum { foo } e' is pretty common. */;
8208 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8216 /* Create a canonical pointer to member function type. */
8219 build_ptrmemfunc_type (type
)
8226 /* If a canonical type already exists for this type, use it. We use
8227 this method instead of type_hash_canon, because it only does a
8228 simple equality check on the list of field members. */
8230 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8233 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8235 u
= make_lang_type (UNION_TYPE
);
8236 IS_AGGR_TYPE (u
) = 0;
8237 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8238 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8240 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8241 TYPE_NAME (u
) = NULL_TREE
;
8243 t
= make_lang_type (RECORD_TYPE
);
8245 /* Let the front-end know this is a pointer to member function... */
8246 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8247 /* ... and not really an aggregate. */
8248 IS_AGGR_TYPE (t
) = 0;
8250 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8252 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8254 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8255 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8259 /* Zap out the name so that the back-end will give us the debugging
8260 information for this anonymous RECORD_TYPE. */
8261 TYPE_NAME (t
) = NULL_TREE
;
8263 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8265 /* Seems to be wanted. */
8266 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8270 /* Given declspecs and a declarator,
8271 determine the name and type of the object declared
8272 and construct a ..._DECL node for it.
8273 (In one case we can return a ..._TYPE node instead.
8274 For invalid input we sometimes return 0.)
8276 DECLSPECS is a chain of tree_list nodes whose value fields
8277 are the storage classes and type specifiers.
8279 DECL_CONTEXT says which syntactic context this declaration is in:
8280 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8281 FUNCDEF for a function definition. Like NORMAL but a few different
8282 error messages in each case. Return value may be zero meaning
8283 this definition is too screwy to try to parse.
8284 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8285 handle member functions (which have FIELD context).
8286 Return value may be zero meaning this definition is too screwy to
8288 PARM for a parameter declaration (either within a function prototype
8289 or before a function body). Make a PARM_DECL, or return void_type_node.
8290 CATCHPARM for a parameter declaration before a catch clause.
8291 TYPENAME if for a typename (in a cast or sizeof).
8292 Don't make a DECL node; just return the ..._TYPE node.
8293 FIELD for a struct or union field; make a FIELD_DECL.
8294 BITFIELD for a field with specified width.
8295 INITIALIZED is 1 if the decl has an initializer.
8297 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8298 It may also be so in the PARM case, for a prototype where the
8299 argument type is specified but not the name.
8301 This function is where the complicated C meanings of `static'
8302 and `extern' are interpreted.
8304 For C++, if there is any monkey business to do, the function which
8305 calls this one must do it, i.e., prepending instance variables,
8306 renaming overloaded function names, etc.
8308 Note that for this C++, it is an error to define a method within a class
8309 which does not belong to that class.
8311 Except in the case where SCOPE_REFs are implicitly known (such as
8312 methods within a class being redundantly qualified),
8313 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8314 (class_name::decl_name). The caller must also deal with this.
8316 If a constructor or destructor is seen, and the context is FIELD,
8317 then the type gains the attribute TREE_HAS_x. If such a declaration
8318 is erroneous, NULL_TREE is returned.
8320 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8321 function, these are the qualifiers to give to the `this' pointer.
8323 May return void_type_node if the declarator turned out to be a friend.
8324 See grokfield for details. */
8326 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8329 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8332 enum decl_context decl_context
;
8336 RID_BIT_TYPE specbits
;
8339 tree type
= NULL_TREE
;
8343 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8344 int explicit_int
= 0;
8345 int explicit_char
= 0;
8346 int defaulted_int
= 0;
8347 int opaque_typedef
= 0;
8348 tree typedef_decl
= NULL_TREE
;
8350 tree typedef_type
= NULL_TREE
;
8351 int funcdef_flag
= 0;
8352 enum tree_code innermost_code
= ERROR_MARK
;
8355 /* See the code below that used this. */
8356 tree decl_machine_attr
= NULL_TREE
;
8358 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8359 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8360 tree init
= NULL_TREE
;
8362 /* Keep track of what sort of function is being processed
8363 so that we can warn about default return values, or explicit
8364 return values which do not match prescribed defaults. */
8365 enum return_types return_type
= return_normal
;
8367 tree dname
= NULL_TREE
;
8368 tree ctype
= current_class_type
;
8369 tree ctor_return_type
= NULL_TREE
;
8370 enum overload_flags flags
= NO_SPECIAL
;
8371 tree quals
= NULL_TREE
;
8372 tree raises
= NULL_TREE
;
8373 int template_count
= 0;
8374 tree in_namespace
= NULL_TREE
;
8376 RIDBIT_RESET_ALL (specbits
);
8377 if (decl_context
== FUNCDEF
)
8378 funcdef_flag
= 1, decl_context
= NORMAL
;
8379 else if (decl_context
== MEMFUNCDEF
)
8380 funcdef_flag
= -1, decl_context
= FIELD
;
8381 else if (decl_context
== BITFIELD
)
8382 bitfield
= 1, decl_context
= FIELD
;
8384 /* Look inside a declarator for the name being declared
8385 and get it as a string, for an error message. */
8387 tree
*next
= &declarator
;
8391 while (next
&& *next
)
8394 switch (TREE_CODE (decl
))
8398 next
= &TREE_OPERAND (decl
, 0);
8401 case BIT_NOT_EXPR
: /* For C++ destructors! */
8403 tree name
= TREE_OPERAND (decl
, 0);
8404 tree rename
= NULL_TREE
;
8406 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8408 return_type
= return_dtor
;
8409 if (TREE_CODE (name
) == TYPE_DECL
)
8410 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8411 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8412 if (ctype
== NULL_TREE
)
8414 if (current_class_type
== NULL_TREE
)
8416 error ("destructors must be member functions");
8421 tree t
= constructor_name (current_class_name
);
8428 tree t
= constructor_name (ctype
);
8435 cp_error ("destructor `%T' must match class name `%T'",
8437 TREE_OPERAND (decl
, 0) = rename
;
8443 case ADDR_EXPR
: /* C++ reference declaration */
8448 innermost_code
= TREE_CODE (decl
);
8449 next
= &TREE_OPERAND (decl
, 0);
8453 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8455 /* This is actually a variable declaration using constructor
8456 syntax. We need to call start_decl and cp_finish_decl so we
8457 can get the variable initialized... */
8459 *next
= TREE_OPERAND (decl
, 0);
8460 init
= TREE_OPERAND (decl
, 1);
8462 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8463 /* Look for __unused__ attribute */
8464 if (TREE_USED (TREE_TYPE (decl
)))
8465 TREE_USED (decl
) = 1;
8466 finish_decl (decl
, init
, NULL_TREE
);
8469 innermost_code
= TREE_CODE (decl
);
8470 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8471 ctype
= current_class_type
;
8473 && TREE_OPERAND (decl
, 0)
8474 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8475 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8476 == constructor_name_full (ctype
))
8477 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8478 == constructor_name (ctype
)))))
8479 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8480 next
= &TREE_OPERAND (decl
, 0);
8482 if (ctype
!= NULL_TREE
8483 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8484 && decl
== constructor_name (ctype
))
8486 return_type
= return_ctor
;
8487 ctor_return_type
= ctype
;
8492 case TEMPLATE_ID_EXPR
:
8494 tree fns
= TREE_OPERAND (decl
, 0);
8496 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8497 fns
= TREE_OPERAND (fns
, 0);
8499 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8501 else if (is_overloaded_fn (fns
))
8502 dname
= DECL_NAME (get_first_fn (fns
));
8504 my_friendly_abort (0);
8508 case IDENTIFIER_NODE
:
8509 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8516 cp_error ("declarator-id missing; using reserved word `%D'",
8518 name
= IDENTIFIER_POINTER (dname
);
8520 if (! IDENTIFIER_OPNAME_P (dname
)
8521 /* GNU/Linux headers use '__op'. Arrgh. */
8522 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8523 name
= IDENTIFIER_POINTER (dname
);
8526 if (IDENTIFIER_TYPENAME_P (dname
))
8528 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8529 flags
= TYPENAME_FLAG
;
8530 ctor_return_type
= TREE_TYPE (dname
);
8531 return_type
= return_conversion
;
8533 name
= operator_name_string (dname
);
8540 /* Perform error checking, and decide on a ctype. */
8541 tree cname
= TREE_OPERAND (decl
, 0);
8542 if (cname
== NULL_TREE
)
8544 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8547 in_namespace
= TREE_OPERAND (decl
, 0);
8548 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8550 else if (! is_aggr_type (cname
, 1))
8551 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8552 /* Must test TREE_OPERAND (decl, 1), in case user gives
8553 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8554 else if (TREE_OPERAND (decl
, 1)
8555 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8557 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8558 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8560 cp_error ("`%T::%D' is not a valid declarator", cname
,
8561 TREE_OPERAND (decl
, 1));
8562 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8563 cname
, TREE_OPERAND (decl
, 1));
8564 return void_type_node
;
8566 else if (ctype
== NULL_TREE
)
8568 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8569 TREE_OPERAND (decl
, 0) = ctype
;
8572 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8574 cp_error ("type `%T' is not derived from type `%T'",
8576 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8582 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8583 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8584 == constructor_name_full (ctype
))
8585 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8586 == constructor_name (ctype
))))
8587 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8588 next
= &TREE_OPERAND (decl
, 1);
8592 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8593 && constructor_name (ctype
) == decl
)
8595 return_type
= return_ctor
;
8596 ctor_return_type
= ctype
;
8598 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8599 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8600 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8601 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8603 return_type
= return_dtor
;
8604 ctor_return_type
= ctype
;
8606 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8607 next
= &TREE_OPERAND (decl
, 0);
8618 /* Parse error puts this typespec where
8619 a declarator should go. */
8620 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8621 if (TREE_TYPE (decl
) == current_class_type
)
8622 cp_error (" perhaps you want `%T' for a constructor",
8623 current_class_name
);
8624 dname
= DECL_NAME (decl
);
8625 name
= IDENTIFIER_POINTER (dname
);
8627 /* Avoid giving two errors for this. */
8628 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8630 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8637 cp_compiler_error ("`%D' as declarator", decl
);
8638 return 0; /* We used to do a 155 abort here. */
8645 /* A function definition's declarator must have the form of
8646 a function declarator. */
8648 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8651 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8652 && innermost_code
!= CALL_EXPR
8653 && ! (ctype
&& declspecs
== NULL_TREE
))
8655 cp_error ("declaration of `%D' as non-function", dname
);
8656 return void_type_node
;
8659 /* Anything declared one level down from the top level
8660 must be one of the parameters of a function
8661 (because the body is at least two levels down). */
8663 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8664 by not allowing C++ class definitions to specify their parameters
8665 with xdecls (must be spec.d in the parmlist).
8667 Since we now wait to push a class scope until we are sure that
8668 we are in a legitimate method context, we must set oldcname
8669 explicitly (since current_class_name is not yet alive).
8671 We also want to avoid calling this a PARM if it is in a namespace. */
8673 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8674 && ! pseudo_global_level_p ())
8676 struct binding_level
*b
= current_binding_level
;
8677 current_binding_level
= b
->level_chain
;
8678 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8679 decl_context
= PARM
;
8680 current_binding_level
= b
;
8683 /* Look through the decl specs and record which ones appear.
8684 Some typespecs are defined as built-in typenames.
8685 Others, the ones that are modifiers of other types,
8686 are represented by bits in SPECBITS: set the bits for
8687 the modifiers that appear. Storage class keywords are also in SPECBITS.
8689 If there is a typedef name or a type, store the type in TYPE.
8690 This includes builtin typedefs such as `int'.
8692 Set EXPLICIT_INT if the type is `int' or `char' and did not
8693 come from a user typedef.
8695 Set LONGLONG if `long' is mentioned twice.
8697 For C++, constructors and destructors have their own fast treatment. */
8699 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8704 /* Certain parse errors slip through. For example,
8705 `int class;' is not caught by the parser. Try
8706 weakly to recover here. */
8707 if (TREE_CODE (spec
) != TREE_LIST
)
8710 id
= TREE_VALUE (spec
);
8712 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8714 if (id
== ridpointers
[(int) RID_INT
]
8715 || id
== ridpointers
[(int) RID_CHAR
]
8716 || id
== ridpointers
[(int) RID_BOOL
]
8717 || id
== ridpointers
[(int) RID_WCHAR
])
8721 if (id
== ridpointers
[(int) RID_BOOL
])
8722 error ("`bool' is now a keyword");
8724 cp_error ("extraneous `%T' ignored", id
);
8728 if (id
== ridpointers
[(int) RID_INT
])
8730 else if (id
== ridpointers
[(int) RID_CHAR
])
8732 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8736 /* C++ aggregate types. */
8737 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8740 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8742 type
= IDENTIFIER_TYPE_VALUE (id
);
8746 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8748 if (ridpointers
[i
] == id
)
8750 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8752 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8753 pedwarn ("ANSI C++ does not support `long long'");
8755 error ("`long long long' is too long for GCC");
8759 else if (RIDBIT_SETP (i
, specbits
))
8760 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8761 RIDBIT_SET (i
, specbits
);
8766 /* C++ aggregate types. */
8767 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8770 cp_error ("multiple declarations `%T' and `%T'", type
,
8774 type
= TREE_TYPE (id
);
8775 TREE_VALUE (spec
) = type
;
8780 error ("two or more data types in declaration of `%s'", name
);
8781 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8783 register tree t
= lookup_name (id
, 1);
8784 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8785 error ("`%s' fails to be a typedef or built in type",
8786 IDENTIFIER_POINTER (id
));
8789 type
= TREE_TYPE (t
);
8791 /* See the code below that used this. */
8792 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8797 else if (id
!= error_mark_node
)
8798 /* Can't change CLASS nodes into RECORD nodes here! */
8804 typedef_type
= type
;
8806 /* No type at all: default to `int', and set DEFAULTED_INT
8807 because it was not a user-defined typedef.
8808 Except when we have a `typedef' inside a signature, in
8809 which case the type defaults to `unknown type' and is
8810 instantiated when assigning to a signature pointer or ref. */
8812 if (type
== NULL_TREE
8813 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8814 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8815 || RIDBIT_SETP (RID_LONG
, specbits
)
8816 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8818 /* These imply 'int'. */
8819 type
= integer_type_node
;
8823 if (type
== NULL_TREE
)
8826 if (return_type
== return_dtor
)
8827 type
= void_type_node
;
8828 else if (return_type
== return_ctor
)
8829 type
= build_pointer_type (ctor_return_type
);
8830 else if (return_type
== return_conversion
)
8831 type
= ctor_return_type
;
8832 else if (current_class_type
8833 && IS_SIGNATURE (current_class_type
)
8834 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8835 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8839 type
= copy_node (opaque_type_node
);
8845 if (warn_return_type
8846 && return_type
== return_normal
)
8847 /* Save warning until we know what is really going on. */
8848 warn_about_return_type
= 1;
8850 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8851 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8852 else if (innermost_code
!= CALL_EXPR
|| pedantic
8853 || (warn_return_type
&& return_type
== return_normal
))
8855 if (innermost_code
== CALL_EXPR
)
8856 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
8858 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8861 type
= integer_type_node
;
8864 else if (return_type
== return_dtor
)
8866 error ("return type specification for destructor invalid");
8867 type
= void_type_node
;
8869 else if (return_type
== return_ctor
)
8871 error ("return type specification for constructor invalid");
8872 type
= build_pointer_type (ctor_return_type
);
8874 else if (return_type
== return_conversion
)
8876 if (comptypes (type
, ctor_return_type
, 1) == 0)
8877 cp_error ("operator `%T' declared to return `%T'",
8878 ctor_return_type
, type
);
8880 cp_pedwarn ("return type specified for `operator %T'",
8883 type
= ctor_return_type
;
8888 /* Now process the modifiers that were specified
8889 and check for invalid combinations. */
8891 /* Long double is a special combination. */
8893 if (RIDBIT_SETP (RID_LONG
, specbits
)
8894 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
8896 RIDBIT_RESET (RID_LONG
, specbits
);
8897 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
8898 TYPE_VOLATILE (type
));
8901 /* Check all other uses of type modifiers. */
8903 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8904 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8905 || RIDBIT_SETP (RID_LONG
, specbits
)
8906 || RIDBIT_SETP (RID_SHORT
, specbits
))
8910 if (TREE_CODE (type
) == REAL_TYPE
)
8911 error ("short, signed or unsigned invalid for `%s'", name
);
8912 else if (TREE_CODE (type
) != INTEGER_TYPE
)
8913 error ("long, short, signed or unsigned invalid for `%s'", name
);
8914 else if (RIDBIT_SETP (RID_LONG
, specbits
)
8915 && RIDBIT_SETP (RID_SHORT
, specbits
))
8916 error ("long and short specified together for `%s'", name
);
8917 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8918 || RIDBIT_SETP (RID_SHORT
, specbits
))
8920 error ("long or short specified with char for `%s'", name
);
8921 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8922 || RIDBIT_SETP (RID_SHORT
, specbits
))
8923 && TREE_CODE (type
) == REAL_TYPE
)
8924 error ("long or short specified with floating type for `%s'", name
);
8925 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8926 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
8927 error ("signed and unsigned given together for `%s'", name
);
8931 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
8933 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8935 if (flag_pedantic_errors
)
8940 /* Discard the type modifiers if they are invalid. */
8943 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
8944 RIDBIT_RESET (RID_SIGNED
, specbits
);
8945 RIDBIT_RESET (RID_LONG
, specbits
);
8946 RIDBIT_RESET (RID_SHORT
, specbits
);
8951 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
8952 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
8954 error ("complex invalid for `%s'", name
);
8955 RIDBIT_RESET (RID_COMPLEX
, specbits
);
8958 /* Decide whether an integer type is signed or not.
8959 Optionally treat bitfields as signed by default. */
8960 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8961 || (bitfield
&& ! flag_signed_bitfields
8962 && (explicit_int
|| defaulted_int
|| explicit_char
8963 /* A typedef for plain `int' without `signed'
8964 can be controlled just like plain `int'. */
8965 || ! (typedef_decl
!= NULL_TREE
8966 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
8967 && TREE_CODE (type
) != ENUMERAL_TYPE
8968 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
8971 type
= long_long_unsigned_type_node
;
8972 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8973 type
= long_unsigned_type_node
;
8974 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8975 type
= short_unsigned_type_node
;
8976 else if (type
== char_type_node
)
8977 type
= unsigned_char_type_node
;
8978 else if (typedef_decl
)
8979 type
= unsigned_type (type
);
8981 type
= unsigned_type_node
;
8983 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8984 && type
== char_type_node
)
8985 type
= signed_char_type_node
;
8987 type
= long_long_integer_type_node
;
8988 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8989 type
= long_integer_type_node
;
8990 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8991 type
= short_integer_type_node
;
8993 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
8995 /* If we just have "complex", it is equivalent to
8996 "complex double", but if any modifiers at all are specified it is
8997 the complex form of TYPE. E.g, "complex short" is
8998 "complex short int". */
9000 if (defaulted_int
&& ! longlong
9001 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
9002 || RIDBIT_SETP (RID_SHORT
, specbits
)
9003 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9004 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
9005 type
= complex_double_type_node
;
9006 else if (type
== integer_type_node
)
9007 type
= complex_integer_type_node
;
9008 else if (type
== float_type_node
)
9009 type
= complex_float_type_node
;
9010 else if (type
== double_type_node
)
9011 type
= complex_double_type_node
;
9012 else if (type
== long_double_type_node
)
9013 type
= complex_long_double_type_node
;
9015 type
= build_complex_type (type
);
9018 if (return_type
== return_conversion
9019 && (RIDBIT_SETP (RID_CONST
, specbits
)
9020 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9021 cp_error ("`operator %T' cannot be cv-qualified",
9024 /* Set CONSTP if this declaration is `const', whether by
9025 explicit specification or via a typedef.
9026 Likewise for VOLATILEP. */
9028 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9029 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9030 type
= build_type_variant (type
, 0, 0);
9032 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9033 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9034 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9035 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9036 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9038 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9039 staticp
= 1 + (decl_context
== FIELD
);
9041 if (virtualp
&& staticp
== 2)
9043 cp_error ("member `%D' cannot be declared both virtual and static",
9047 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9048 RIDBIT_RESET (RID_FRIEND
, specbits
);
9050 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9052 if (decl_context
== PARM
)
9054 error ("non-member `%s' cannot be declared `mutable'", name
);
9055 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9057 else if (friendp
|| decl_context
== TYPENAME
)
9059 error ("non-object member `%s' cannot be declared `mutable'", name
);
9060 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9064 /* Warn if two storage classes are given. Default to `auto'. */
9066 if (RIDBIT_ANY_SET (specbits
))
9068 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9069 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9070 if (decl_context
== PARM
&& nclasses
> 0)
9071 error ("storage class specifiers invalid in parameter declarations");
9072 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9074 if (decl_context
== PARM
)
9075 error ("typedef declaration invalid in parameter declaration");
9078 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9079 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9082 /* Give error if `virtual' is used outside of class declaration. */
9084 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9086 error ("virtual outside class declaration");
9089 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9091 error ("only members can be declared mutable");
9092 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9095 /* Static anonymous unions are dealt with here. */
9096 if (staticp
&& decl_context
== TYPENAME
9097 && TREE_CODE (declspecs
) == TREE_LIST
9098 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9099 decl_context
= FIELD
;
9101 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9102 is used in a signature member function declaration. */
9103 if (decl_context
== FIELD
9104 && IS_SIGNATURE (current_class_type
)
9105 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9109 error ("`const' specified for signature member function `%s'", name
);
9114 error ("`volatile' specified for signature member function `%s'",
9120 error ("`inline' specified for signature member function `%s'", name
);
9121 /* Later, we'll make signature member functions inline. */
9126 error ("`friend' declaration in signature definition");
9131 error ("`virtual' specified for signature member function `%s'",
9133 /* Later, we'll make signature member functions virtual. */
9138 /* Warn about storage classes that are invalid for certain
9139 kinds of declarations (parameters, typenames, etc.). */
9142 error ("multiple storage classes in declaration of `%s'", name
);
9143 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9145 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9146 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9147 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9149 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9151 else if (decl_context
== FIELD
9152 && ! IS_SIGNATURE (current_class_type
)
9153 /* C++ allows static class elements */
9154 && RIDBIT_SETP (RID_STATIC
, specbits
))
9155 /* C++ also allows inlines and signed and unsigned elements,
9156 but in those cases we don't come in here. */
9160 if (decl_context
== FIELD
)
9162 tree tmp
= NULL_TREE
;
9163 register int op
= 0;
9167 /* Avoid trying to get an operand off an identifier node. */
9168 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9171 tmp
= TREE_OPERAND (declarator
, 0);
9172 op
= IDENTIFIER_OPNAME_P (tmp
);
9174 error ("storage class specified for %s `%s'",
9175 IS_SIGNATURE (current_class_type
)
9177 ? "signature member operator"
9178 : "signature member function")
9179 : (op
? "member operator" : "field"),
9180 op
? operator_name_string (tmp
) : name
);
9183 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9184 ? "storage class specified for parameter `%s'"
9185 : "storage class specified for typename"), name
);
9186 RIDBIT_RESET (RID_REGISTER
, specbits
);
9187 RIDBIT_RESET (RID_AUTO
, specbits
);
9188 RIDBIT_RESET (RID_EXTERN
, specbits
);
9190 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9192 RIDBIT_RESET (RID_STATIC
, specbits
);
9197 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9199 if (toplevel_bindings_p ())
9201 /* It's common practice (and completely valid) to have a const
9202 be initialized and declared extern. */
9204 warning ("`%s' initialized and declared `extern'", name
);
9207 error ("`%s' has both `extern' and initializer", name
);
9209 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9210 && ! toplevel_bindings_p ())
9211 error ("nested function `%s' declared `extern'", name
);
9212 else if (toplevel_bindings_p ())
9214 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9215 error ("top-level declaration of `%s' specifies `auto'", name
);
9218 if (nclasses
> 0 && friendp
)
9219 error ("storage class specifiers invalid in friend function declarations");
9221 /* Now figure out the structure of the declarator proper.
9222 Descend through it, creating more complex types, until we reach
9223 the declared identifier (or NULL_TREE, in an absolute declarator). */
9225 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9226 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9228 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9229 an INDIRECT_REF (for *...),
9230 a CALL_EXPR (for ...(...)),
9231 an identifier (for the name being declared)
9232 or a null pointer (for the place in an absolute declarator
9233 where the name was omitted).
9234 For the last two cases, we have just exited the loop.
9236 For C++ it could also be
9237 a SCOPE_REF (for class :: ...). In this case, we have converted
9238 sensible names to types, and those are the values we use to
9239 qualify the member name.
9240 an ADDR_EXPR (for &...),
9241 a BIT_NOT_EXPR (for destructors)
9243 At this point, TYPE is the type of elements of an array,
9244 or for a function to return, or for a pointer to point to.
9245 After this sequence of ifs, TYPE is the type of the
9246 array or function or pointer, and DECLARATOR has had its
9247 outermost layer removed. */
9249 if (type
== error_mark_node
)
9251 if (TREE_CODE (declarator
) == SCOPE_REF
)
9252 declarator
= TREE_OPERAND (declarator
, 1);
9254 declarator
= TREE_OPERAND (declarator
, 0);
9257 if (quals
!= NULL_TREE
9258 && (declarator
== NULL_TREE
9259 || TREE_CODE (declarator
) != SCOPE_REF
))
9261 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9262 ctype
= TYPE_METHOD_BASETYPE (type
);
9263 if (ctype
!= NULL_TREE
)
9265 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9266 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9267 type
= TREE_TYPE (dummy
);
9271 switch (TREE_CODE (declarator
))
9275 register tree itype
= NULL_TREE
;
9276 register tree size
= TREE_OPERAND (declarator
, 1);
9277 /* The index is a signed object `sizetype' bits wide. */
9278 tree index_type
= signed_type (sizetype
);
9280 declarator
= TREE_OPERAND (declarator
, 0);
9282 /* Check for some types that there cannot be arrays of. */
9284 if (TREE_CODE (type
) == VOID_TYPE
)
9286 cp_error ("declaration of `%D' as array of voids", dname
);
9287 type
= error_mark_node
;
9290 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9292 cp_error ("declaration of `%D' as array of functions", dname
);
9293 type
= error_mark_node
;
9296 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9297 you can't have arrays of references. If we allowed them,
9298 then we'd be saying x[i] is valid for an array x, but
9299 then you'd have to ask: what does `*(x + i)' mean? */
9300 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9302 if (decl_context
== TYPENAME
)
9303 cp_error ("cannot make arrays of references");
9305 cp_error ("declaration of `%D' as array of references",
9307 type
= error_mark_node
;
9310 if (TREE_CODE (type
) == OFFSET_TYPE
)
9312 cp_error ("declaration of `%D' as array of data members",
9314 type
= error_mark_node
;
9317 if (TREE_CODE (type
) == METHOD_TYPE
)
9319 cp_error ("declaration of `%D' as array of function members",
9321 type
= error_mark_node
;
9324 if (size
== error_mark_node
)
9325 type
= error_mark_node
;
9327 if (type
== error_mark_node
)
9332 /* Must suspend_momentary here because the index
9333 type may need to live until the end of the function.
9334 For example, it is used in the declaration of a
9335 variable which requires destructing at the end of
9336 the function; then build_vec_delete will need this
9338 int yes
= suspend_momentary ();
9339 /* Might be a cast. */
9340 if (TREE_CODE (size
) == NOP_EXPR
9341 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9342 size
= TREE_OPERAND (size
, 0);
9344 /* If this involves a template parameter, it'll be
9345 constant, but we don't know what the value is yet. */
9346 if (processing_template_decl
)
9348 itype
= make_node (INTEGER_TYPE
);
9349 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9350 TYPE_MAX_VALUE (itype
) = build_min
9351 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9352 goto dont_grok_size
;
9355 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9356 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9358 cp_error ("size of array `%D' has non-integer type",
9360 size
= integer_one_node
;
9362 if (TREE_READONLY_DECL_P (size
))
9363 size
= decl_constant_value (size
);
9364 if (pedantic
&& integer_zerop (size
))
9365 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9366 if (TREE_CONSTANT (size
))
9368 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9369 int old_pedantic
= pedantic
;
9370 pedantic
= flag_pedantic_errors
= 1;
9371 /* Always give overflow errors on array subscripts. */
9372 constant_expression_warning (size
);
9373 pedantic
= old_pedantic
;
9374 flag_pedantic_errors
= old_flag_pedantic_errors
;
9375 if (INT_CST_LT (size
, integer_zero_node
))
9377 cp_error ("size of array `%D' is negative", dname
);
9378 size
= integer_one_node
;
9386 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9389 cp_pedwarn ("ANSI C++ forbids variable-size array");
9394 = fold (build_binary_op (MINUS_EXPR
,
9395 cp_convert (index_type
, size
),
9396 cp_convert (index_type
,
9397 integer_one_node
), 1));
9398 if (! TREE_CONSTANT (itype
))
9399 itype
= variable_size (itype
);
9400 else if (TREE_OVERFLOW (itype
))
9402 error ("overflow in array dimension");
9403 TREE_OVERFLOW (itype
) = 0;
9406 /* If we're a parm, we need to have a permanent type so
9407 mangling checks for re-use will work right. If both the
9408 element and index types are permanent, the array type
9410 if (decl_context
== PARM
9411 && allocation_temporary_p () && TREE_PERMANENT (type
))
9413 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9414 itype
= build_index_type (itype
);
9418 itype
= build_index_type (itype
);
9421 resume_momentary (yes
);
9424 /* Build the array type itself, then merge any constancy or
9425 volatility into the target type. We must do it in this order
9426 to ensure that the TYPE_MAIN_VARIANT field of the array type
9427 is set correctly. */
9429 type
= build_cplus_array_type (type
, itype
);
9430 if (constp
|| volatilep
)
9431 type
= cp_build_type_variant (type
, constp
, volatilep
);
9441 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9442 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9444 /* Declaring a function type.
9445 Make sure we have a valid type for the function to return. */
9447 /* Is this an error? Should they be merged into TYPE here? */
9448 if (pedantic
&& (constp
|| volatilep
))
9449 pedwarn ("function declared to return const or volatile result");
9451 /* Merge any constancy or volatility into the function return
9454 if (constp
|| volatilep
)
9456 type
= cp_build_type_variant (type
, constp
, volatilep
);
9457 if (IS_AGGR_TYPE (type
))
9458 build_pointer_type (type
);
9464 /* Warn about some types functions can't return. */
9466 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9468 error ("`%s' declared as function returning a function", name
);
9469 type
= integer_type_node
;
9471 if (TREE_CODE (type
) == ARRAY_TYPE
)
9473 error ("`%s' declared as function returning an array", name
);
9474 type
= integer_type_node
;
9477 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9478 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9480 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9483 /* Pick up type qualifiers which should be applied to `this'. */
9484 quals
= TREE_OPERAND (declarator
, 2);
9486 /* Pick up the exception specifications. */
9487 raises
= TREE_TYPE (declarator
);
9489 /* Say it's a definition only for the CALL_EXPR
9490 closest to the identifier. */
9493 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9494 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9495 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9497 if (ctype
== NULL_TREE
9498 && decl_context
== FIELD
9500 && (friendp
== 0 || dname
== current_class_name
))
9501 ctype
= current_class_type
;
9503 if (ctype
&& return_type
== return_conversion
)
9504 TYPE_HAS_CONVERSION (ctype
) = 1;
9505 if (ctype
&& constructor_name (ctype
) == dname
)
9507 /* We are within a class's scope. If our declarator name
9508 is the same as the class name, and we are defining
9509 a function, then it is a constructor/destructor, and
9510 therefore returns a void type. */
9512 if (flags
== DTOR_FLAG
)
9514 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9515 not be declared const or volatile. A destructor
9516 may not be static. */
9518 error ("destructor cannot be static member function");
9521 error ("destructors cannot be declared `const' or `volatile'");
9522 return void_type_node
;
9524 if (decl_context
== FIELD
)
9526 if (! member_function_or_else (ctype
, current_class_type
,
9527 "destructor for alien class `%s' cannot be a member"))
9528 return void_type_node
;
9531 else /* It's a constructor. */
9535 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9536 not be declared const or volatile. A constructor may
9537 not be virtual. A constructor may not be static. */
9539 error ("constructor cannot be static member function");
9542 pedwarn ("constructors cannot be declared virtual");
9547 error ("constructors cannot be declared `const' or `volatile'");
9548 return void_type_node
;
9551 RID_BIT_TYPE tmp_bits
;
9552 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9553 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9554 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9555 if (RIDBIT_ANY_SET (tmp_bits
))
9556 error ("return value type specifier for constructor ignored");
9558 type
= build_pointer_type (ctype
);
9559 if (decl_context
== FIELD
9560 && IS_SIGNATURE (current_class_type
))
9562 error ("constructor not allowed in signature");
9563 return void_type_node
;
9565 else if (decl_context
== FIELD
)
9567 if (! member_function_or_else (ctype
, current_class_type
,
9568 "constructor for alien class `%s' cannot be member"))
9569 return void_type_node
;
9570 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9571 if (return_type
!= return_ctor
)
9575 if (decl_context
== FIELD
)
9581 error ("can't initialize friend function `%s'", name
);
9584 /* Cannot be both friend and virtual. */
9585 error ("virtual functions cannot be friends");
9586 RIDBIT_RESET (RID_FRIEND
, specbits
);
9589 if (decl_context
== NORMAL
)
9590 error ("friend declaration not in class definition");
9591 if (current_function_decl
&& funcdef_flag
)
9592 cp_error ("can't define friend function `%s' in a local class definition",
9596 /* Construct the function type and go to the next
9597 inner layer of declarator. */
9599 declarator
= TREE_OPERAND (declarator
, 0);
9601 /* FIXME: This is where default args should be fully
9604 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9608 /* Get past destructors, etc.
9609 We know we have one because FLAGS will be non-zero.
9611 Complain about improper parameter lists here. */
9612 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9614 declarator
= TREE_OPERAND (declarator
, 0);
9616 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9617 arg_types
= void_list_node
;
9618 else if (arg_types
== NULL_TREE
9619 || arg_types
!= void_list_node
)
9621 error ("destructors cannot be specified with parameters");
9622 arg_types
= void_list_node
;
9627 /* ANSI says that `const int foo ();'
9628 does not make the function foo const. */
9629 type
= build_function_type (type
, arg_types
);
9633 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9634 if (TREE_PURPOSE (t
)
9635 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9637 add_defarg_fn (type
);
9646 /* Filter out pointers-to-references and references-to-references.
9647 We can get these if a TYPE_DECL is used. */
9649 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9651 error ("cannot declare %s to references",
9652 TREE_CODE (declarator
) == ADDR_EXPR
9653 ? "references" : "pointers");
9654 declarator
= TREE_OPERAND (declarator
, 0);
9658 if (TREE_CODE (type
) == OFFSET_TYPE
9659 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9660 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9662 cp_error ("cannot declare pointer to `%#T' member",
9664 type
= TREE_TYPE (type
);
9667 /* Merge any constancy or volatility into the target type
9670 if (constp
|| volatilep
)
9672 /* A const or volatile signature pointer/reference is
9673 pointing to a const or volatile object, i.e., the
9674 `optr' is const or volatile, respectively, not the
9675 signature pointer/reference itself. */
9676 if (! IS_SIGNATURE (type
))
9678 type
= cp_build_type_variant (type
, constp
, volatilep
);
9679 if (IS_AGGR_TYPE (type
))
9680 build_pointer_type (type
);
9686 if (IS_SIGNATURE (type
))
9688 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9690 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9691 && TYPE_SIZE (type
))
9692 cp_warning ("empty signature `%T' used in signature reference declaration",
9695 type
= build_signature_reference_type (type
,
9698 sorry ("signature reference");
9704 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9705 && TYPE_SIZE (type
))
9706 cp_warning ("empty signature `%T' used in signature pointer declaration",
9708 type
= build_signature_pointer_type (type
,
9714 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9716 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9718 error ("cannot declare references to functions; use pointer to function instead");
9719 type
= build_pointer_type (type
);
9723 if (TREE_CODE (type
) == VOID_TYPE
)
9724 error ("invalid type: `void &'");
9726 type
= build_reference_type (type
);
9729 else if (TREE_CODE (type
) == METHOD_TYPE
)
9731 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9734 type
= build_pointer_type (type
);
9736 /* Process a list of type modifier keywords (such as
9737 const or volatile) that were given inside the `*' or `&'. */
9739 if (TREE_TYPE (declarator
))
9741 register tree typemodlist
;
9743 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9744 typemodlist
= TREE_CHAIN (typemodlist
))
9746 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9748 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9753 error ("invalid type modifier within %s declarator",
9754 TREE_CODE (declarator
) == ADDR_EXPR
9755 ? "reference" : "pointer");
9759 pedwarn ("duplicate `const'");
9761 pedwarn ("duplicate `volatile'");
9762 if (TREE_CODE (declarator
) == ADDR_EXPR
9763 && (constp
|| volatilep
))
9766 pedwarn ("discarding `const' applied to a reference");
9768 pedwarn ("discarding `volatile' applied to a reference");
9769 constp
= volatilep
= 0;
9772 declarator
= TREE_OPERAND (declarator
, 0);
9778 /* We have converted type names to NULL_TREE if the
9779 name was bogus, or to a _TYPE node, if not.
9781 The variable CTYPE holds the type we will ultimately
9782 resolve to. The code here just needs to build
9783 up appropriate member types. */
9784 tree sname
= TREE_OPERAND (declarator
, 1);
9787 /* Destructors can have their visibilities changed as well. */
9788 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9789 sname
= TREE_OPERAND (sname
, 0);
9791 if (TREE_COMPLEXITY (declarator
) == 0)
9792 /* This needs to be here, in case we are called
9793 multiple times. */ ;
9794 else if (TREE_COMPLEXITY (declarator
) == -1)
9795 /* Namespace member. */
9796 pop_decl_namespace ();
9797 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9798 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9799 else if (! IS_AGGR_TYPE_CODE
9800 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9802 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9804 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9805 that refer to ctype. They couldn't be resolved earlier
9806 because we hadn't pushed into the class yet.
9807 Example: resolve 'B<T>::type' in
9808 'B<typename B<T>::type> B<T>::f () { }'. */
9809 if (current_template_parms
9810 && uses_template_parms (type
)
9811 && uses_template_parms (current_class_type
))
9813 tree args
= current_template_args ();
9814 type
= tsubst (type
, args
, NULL_TREE
);
9817 /* This pop_nested_class corresponds to the
9818 push_nested_class used to push into class scope for
9819 parsing the argument list of a function decl, in
9821 pop_nested_class (1);
9822 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9825 my_friendly_abort (16);
9827 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9829 /* We had a reference to a global decl, or
9830 perhaps we were given a non-aggregate typedef,
9831 in which case we cleared this out, and should just
9832 keep going as though it wasn't there. */
9836 ctype
= TREE_OPERAND (declarator
, 0);
9839 while (t
!= NULL_TREE
)
9841 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9842 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9843 template_count
+= 1;
9844 t
= TYPE_MAIN_DECL (t
);
9845 if (DECL_LANG_SPECIFIC (t
))
9846 t
= DECL_CLASS_CONTEXT (t
);
9851 if (sname
== NULL_TREE
)
9854 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9856 /* This is the `standard' use of the scoping operator:
9857 basetype :: member . */
9859 if (ctype
== current_class_type
)
9865 Is this ill-formed? */
9868 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9871 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9873 if (current_class_type
== NULL_TREE
9875 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9876 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9879 cp_error ("cannot declare member function `%T::%s' within `%T'",
9880 ctype
, name
, current_class_type
);
9881 return void_type_node
;
9884 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9885 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9887 /* Have to move this code elsewhere in this function.
9888 this code is used for i.e., typedef int A::M; M *pm;
9890 It is? How? jason 10/2/94 */
9892 if (current_class_type
)
9894 cp_error ("cannot declare member `%T::%s' within `%T'",
9895 ctype
, name
, current_class_type
);
9896 return void_type_node
;
9898 type
= build_offset_type (ctype
, type
);
9900 else if (uses_template_parms (ctype
))
9902 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9904 = build_cplus_method_type (build_type_variant (ctype
,
9908 TYPE_ARG_TYPES (type
));
9912 cp_error ("structure `%T' not yet defined", ctype
);
9913 return error_mark_node
;
9918 else if (TREE_CODE (sname
) == SCOPE_REF
)
9919 my_friendly_abort (17);
9923 declarator
= TREE_OPERAND (declarator
, 1);
9924 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9925 /* In this case, we will deal with it later. */
9929 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9930 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9932 type
= build_offset_type (ctype
, type
);
9939 declarator
= TREE_OPERAND (declarator
, 0);
9945 declarator
= NULL_TREE
;
9949 declarator
= NULL_TREE
;
9953 my_friendly_abort (158);
9959 error ("only constructors can be declared `explicit'");
9963 /* Now TYPE has the actual type. */
9965 /* If this is declaring a typedef name, return a TYPE_DECL. */
9967 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9971 error ("const `%s' cannot be declared `mutable'", name
);
9972 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9976 error ("static `%s' cannot be declared `mutable'", name
);
9977 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9981 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
9985 /* Note that the grammar rejects storage classes
9986 in typenames, fields or parameters. */
9987 if (constp
|| volatilep
)
9988 type
= cp_build_type_variant (type
, constp
, volatilep
);
9989 if (current_lang_name
== lang_name_java
)
9990 TYPE_FOR_JAVA (type
) = 1;
9992 if (decl_context
== FIELD
)
9994 if (declarator
== current_class_name
)
9995 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
9997 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
9998 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
9999 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
10003 /* Make sure this typedef lives as long as its type,
10004 since it might be used as a template parameter. */
10005 if (type
!= error_mark_node
)
10006 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10007 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10008 if (type
!= error_mark_node
)
10012 /* If the user declares "struct {...} foo" then `foo' will have
10013 an anonymous name. Fill that name in now. Nothing can
10014 refer to it, so nothing needs know about the name change.
10015 The TYPE_NAME field was filled in by build_struct_xref. */
10016 if (type
!= error_mark_node
10017 && TYPE_NAME (type
)
10018 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10019 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10021 /* For anonymous structs that are cv-qualified, need to use
10022 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10023 type not referenced after this block, don't bother
10024 resetting type to original type, ie. TREE_TYPE (decl). */
10025 type
= TYPE_MAIN_VARIANT (type
);
10027 /* Replace the anonymous name with the real name everywhere. */
10028 lookup_tag_reverse (type
, declarator
);
10029 TYPE_NAME (type
) = decl
;
10031 if (TYPE_LANG_SPECIFIC (type
))
10032 TYPE_WAS_ANONYMOUS (type
) = 1;
10034 /* XXX Temporarily set the scope.
10035 When returning, start_decl expects it as NULL_TREE,
10036 and will then then set it using pushdecl. */
10037 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10038 if (current_class_type
)
10039 DECL_CONTEXT (decl
) = current_class_type
;
10041 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10043 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10044 DECL_ASSEMBLER_NAME (decl
)
10045 = get_identifier (build_overload_name (type
, 1, 1));
10046 DECL_CONTEXT (decl
) = NULL_TREE
;
10048 /* FIXME remangle member functions; member functions of a
10049 type with external linkage have external linkage. */
10052 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10054 cp_error_at ("typedef name may not be class-qualified", decl
);
10059 if (ctype
== NULL_TREE
)
10061 if (TREE_CODE (type
) != METHOD_TYPE
)
10062 cp_error_at ("invalid type qualifier for non-method type", decl
);
10064 ctype
= TYPE_METHOD_BASETYPE (type
);
10066 if (ctype
!= NULL_TREE
)
10067 grok_method_quals (ctype
, decl
, quals
);
10070 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10071 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10072 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10074 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10076 error ("non-object member `%s' cannot be declared mutable", name
);
10079 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10080 inlinep
, friendp
, raises
!= NULL_TREE
);
10083 error ("typedef declaration includes an initializer");
10088 /* Detect the case of an array type of unspecified size
10089 which came, as such, direct from a typedef name.
10090 We must copy the type, so that each identifier gets
10091 a distinct type, so that each identifier's size can be
10092 controlled separately by its own initializer. */
10094 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10095 && TYPE_DOMAIN (type
) == NULL_TREE
)
10097 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10100 /* If this is a type name (such as, in a cast or sizeof),
10101 compute the type and return it now. */
10103 if (decl_context
== TYPENAME
)
10105 /* Note that the grammar rejects storage classes
10106 in typenames, fields or parameters. */
10107 if (constp
|| volatilep
)
10109 if (IS_SIGNATURE (type
))
10110 error ("`const' or `volatile' specified with signature type");
10112 type
= cp_build_type_variant (type
, constp
, volatilep
);
10115 /* Special case: "friend class foo" looks like a TYPENAME context. */
10120 cp_error ("`volatile' specified for friend class declaration");
10125 cp_error ("`inline' specified for friend class declaration");
10129 /* Only try to do this stuff if we didn't already give up. */
10130 if (type
!= integer_type_node
)
10132 /* A friendly class? */
10133 if (current_class_type
)
10134 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10136 error ("trying to make class `%s' a friend of global scope",
10137 TYPE_NAME_STRING (type
));
10138 type
= void_type_node
;
10143 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10144 if (ctype
== NULL_TREE
)
10146 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10147 ctype
= TYPE_METHOD_BASETYPE (type
);
10149 grok_method_quals (ctype
, dummy
, quals
);
10150 type
= TREE_TYPE (dummy
);
10155 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10156 && decl_context
!= CATCHPARM
10157 && TREE_CODE (type
) != UNION_TYPE
10160 cp_error ("abstract declarator `%T' used as declaration", type
);
10161 declarator
= make_anon_name ();
10164 /* `void' at top level (not within pointer)
10165 is allowed only in typedefs or type names.
10166 We don't complain about parms either, but that is because
10167 a better error message can be made later. */
10169 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10172 error ("unnamed variable or field declared void");
10173 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10175 if (IDENTIFIER_OPNAME_P (declarator
))
10176 my_friendly_abort (356);
10178 error ("variable or field `%s' declared void", name
);
10181 error ("variable or field declared void");
10182 type
= integer_type_node
;
10185 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10186 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10189 register tree decl
;
10191 if (decl_context
== PARM
)
10193 if (ctype
|| in_namespace
)
10194 error ("cannot use `::' in parameter declaration");
10196 /* A parameter declared as an array of T is really a pointer to T.
10197 One declared as a function is really a pointer to a function.
10198 One declared as a member is really a pointer to member. */
10200 if (TREE_CODE (type
) == ARRAY_TYPE
)
10202 /* Transfer const-ness of array into that of type pointed to. */
10203 type
= build_pointer_type
10204 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10205 volatilep
= constp
= 0;
10207 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10208 type
= build_pointer_type (type
);
10209 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10210 type
= build_pointer_type (type
);
10211 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10213 error ("declaration of `%s' as void", name
);
10217 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10219 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10220 inlinep
, friendp
, raises
!= NULL_TREE
);
10221 if (current_class_type
10222 && IS_SIGNATURE (current_class_type
))
10225 error ("parameter of signature member function declared `inline'");
10226 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10227 error ("parameter of signature member function declared `auto'");
10228 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10229 error ("parameter of signature member function declared `register'");
10232 /* Compute the type actually passed in the parmlist,
10233 for the case where there is no prototype.
10234 (For example, shorts and chars are passed as ints.)
10235 When there is a prototype, this is overridden later. */
10237 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10239 else if (decl_context
== FIELD
)
10241 if (type
== error_mark_node
)
10243 /* Happens when declaring arrays of sizes which
10244 are error_mark_node, for example. */
10247 else if (in_namespace
)
10249 /* Something like struct S { int N::j; }; */
10250 cp_error ("invalid use of `::'");
10253 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10256 tree function_context
;
10258 /* We catch the others as conflicts with the builtin
10260 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10262 cp_error ("function `%D' cannot be declared friend",
10269 if (ctype
== NULL_TREE
)
10270 ctype
= current_class_type
;
10272 if (ctype
== NULL_TREE
)
10274 cp_error ("can't make `%D' into a method -- not in a class",
10276 return void_type_node
;
10279 /* ``A union may [ ... ] not [ have ] virtual functions.''
10281 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10283 cp_error ("function `%D' declared virtual inside a union",
10285 return void_type_node
;
10288 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10289 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10290 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10291 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10295 cp_error ("`%D' cannot be declared virtual, since it is always static",
10300 else if (staticp
< 2)
10301 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10302 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10305 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10306 function_context
= (ctype
!= NULL_TREE
) ?
10307 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10308 publicp
= (! friendp
|| ! staticp
)
10309 && function_context
== NULL_TREE
;
10310 decl
= grokfndecl (ctype
, type
,
10311 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10312 ? declarator
: dname
,
10314 virtualp
, flags
, quals
, raises
, attrlist
,
10315 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10316 funcdef_flag
, template_count
, in_namespace
);
10317 if (decl
== NULL_TREE
)
10320 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10321 /* The decl and setting of decl_machine_attr is also turned off. */
10322 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10325 if (explicitp
== 2)
10326 DECL_NONCONVERTING_P (decl
) = 1;
10328 else if (TREE_CODE (type
) == METHOD_TYPE
)
10330 /* We only get here for friend declarations of
10331 members of other classes. */
10332 /* All method decls are public, so tell grokfndecl to set
10333 TREE_PUBLIC, also. */
10334 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10335 virtualp
, flags
, quals
, raises
, attrlist
,
10336 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10337 template_count
, in_namespace
);
10338 if (decl
== NULL_TREE
)
10341 else if (!staticp
&& ! processing_template_decl
10342 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10343 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10346 cp_error ("field `%D' has incomplete type", declarator
);
10348 cp_error ("name `%T' has incomplete type", type
);
10350 /* If we're instantiating a template, tell them which
10351 instantiation made the field's type be incomplete. */
10352 if (current_class_type
10353 && TYPE_NAME (current_class_type
)
10354 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10355 && declspecs
&& TREE_VALUE (declspecs
)
10356 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10357 cp_error (" in instantiation of template `%T'",
10358 current_class_type
);
10360 type
= error_mark_node
;
10367 error ("`%s' is neither function nor method; cannot be declared friend",
10368 IDENTIFIER_POINTER (declarator
));
10376 /* Friends are treated specially. */
10377 if (ctype
== current_class_type
)
10378 warning ("member functions are implicitly friends of their class");
10381 tree t
= NULL_TREE
;
10382 if (decl
&& DECL_NAME (decl
))
10384 if (template_class_depth (current_class_type
) == 0)
10386 = check_explicit_specialization
10388 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10389 t
= do_friend (ctype
, declarator
, decl
,
10390 last_function_parms
, flags
, quals
,
10393 if (t
&& funcdef_flag
)
10396 return void_type_node
;
10400 /* Structure field. It may not be a function, except for C++ */
10402 if (decl
== NULL_TREE
)
10408 /* An attempt is being made to initialize a non-static
10409 member. But, from [class.mem]:
10411 4 A member-declarator can contain a
10412 constant-initializer only if it declares a static
10413 member (_class.static_) of integral or enumeration
10414 type, see _class.static.data_.
10416 This used to be relatively common practice, but
10417 the rest of the compiler does not correctly
10418 handle the initialization unless the member is
10419 static so we make it static below. */
10420 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10421 constp
? "const member" : "member",
10423 cp_pedwarn ("making `%D' static", declarator
);
10427 /* Motion 10 at San Diego: If a static const integral data
10428 member is initialized with an integral constant
10429 expression, the initializer may appear either in the
10430 declaration (within the class), or in the definition,
10431 but not both. If it appears in the class, the member is
10432 a member constant. The file-scope definition is always
10435 /* According to Mike Stump, we generate bad code for
10436 this case, so we might as well always make it an
10438 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10441 if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10442 && !uses_template_parms (type
))
10443 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10448 /* ANSI C++ Apr '95 wp 9.2 */
10449 if (declarator
== current_class_name
)
10450 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10453 /* C++ allows static class members.
10454 All other work for this is done by grokfield.
10455 This VAR_DECL is built by build_lang_field_decl.
10456 All other VAR_DECLs are built by build_decl. */
10457 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10458 TREE_STATIC (decl
) = 1;
10459 /* In class context, 'static' means public access. */
10460 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10464 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10465 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10467 DECL_MUTABLE_P (decl
) = 1;
10468 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10472 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10473 inlinep
, friendp
, raises
!= NULL_TREE
);
10476 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10478 tree original_name
;
10484 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10485 original_name
= dname
;
10487 original_name
= declarator
;
10489 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10490 error ("storage class `auto' invalid for function `%s'", name
);
10491 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10492 error ("storage class `register' invalid for function `%s'", name
);
10494 /* Function declaration not at top level.
10495 Storage classes other than `extern' are not allowed
10496 and `extern' makes no difference. */
10497 if (! toplevel_bindings_p ()
10498 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10499 || RIDBIT_SETP (RID_INLINE
, specbits
))
10502 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10503 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10505 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10508 if (ctype
== NULL_TREE
)
10512 error ("virtual non-class function `%s'", name
);
10516 if (current_lang_name
== lang_name_cplusplus
10517 && ! processing_template_decl
10518 && ! MAIN_NAME_P (original_name
)
10519 && ! (IDENTIFIER_LENGTH (original_name
) > 10
10520 && IDENTIFIER_POINTER (original_name
)[0] == '_'
10521 && IDENTIFIER_POINTER (original_name
)[1] == '_'
10522 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
10523 /* Plain overloading: will not be grok'd by grokclassfn. */
10524 if (name_mangling_version
< 1
10525 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10526 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
10528 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10529 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10530 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10532 /* Record presence of `static'. */
10533 publicp
= (ctype
!= NULL_TREE
10534 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10535 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10537 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10538 virtualp
, flags
, quals
, raises
, attrlist
,
10540 publicp
, inlinep
, funcdef_flag
,
10541 template_count
, in_namespace
);
10542 if (decl
== NULL_TREE
)
10545 /* Among other times, could occur from check_explicit_specialization
10546 returning an error_mark_node. */
10547 if (decl
== error_mark_node
)
10548 return error_mark_node
;
10550 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
10551 && (! DECL_USE_TEMPLATE (decl
) ||
10552 name_mangling_version
< 1))
10553 DECL_ASSEMBLER_NAME (decl
) = declarator
;
10557 int illegal_static
= 0;
10559 /* Don't allow a static member function in a class, and forbid
10560 declaring main to be static. */
10561 if (TREE_CODE (type
) == METHOD_TYPE
)
10563 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10564 illegal_static
= 1;
10566 else if (current_function_decl
)
10568 /* FIXME need arm citation */
10569 error ("cannot declare static function inside another function");
10570 illegal_static
= 1;
10573 if (illegal_static
)
10576 RIDBIT_RESET (RID_STATIC
, specbits
);
10582 /* It's a variable. */
10584 if (decl_context
== CATCHPARM
)
10589 error ("cannot use `::' in parameter declaration");
10592 /* A parameter declared as an array of T is really a pointer to T.
10593 One declared as a function is really a pointer to a function.
10594 One declared as a member is really a pointer to member. */
10596 if (TREE_CODE (type
) == ARRAY_TYPE
)
10598 /* Transfer const-ness of array into that of type
10600 type
= build_pointer_type
10601 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10602 volatilep
= constp
= 0;
10604 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10605 type
= build_pointer_type (type
);
10606 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10607 type
= build_pointer_type (type
);
10610 /* An uninitialized decl with `extern' is a reference. */
10611 decl
= grokvardecl (type
, declarator
, &specbits
,
10612 initialized
, constp
, in_namespace
);
10613 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10614 inlinep
, friendp
, raises
!= NULL_TREE
);
10618 DECL_CONTEXT (decl
) = ctype
;
10621 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10623 RIDBIT_RESET (RID_STATIC
, specbits
);
10625 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10627 cp_error ("static member `%D' declared `register'", decl
);
10628 RIDBIT_RESET (RID_REGISTER
, specbits
);
10630 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10632 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10634 RIDBIT_RESET (RID_EXTERN
, specbits
);
10639 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10641 error ("`%s' cannot be declared mutable", name
);
10644 /* Record `register' declaration for warnings on &
10645 and in case doing stupid register allocation. */
10647 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10648 DECL_REGISTER (decl
) = 1;
10650 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10651 DECL_THIS_EXTERN (decl
) = 1;
10653 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10654 DECL_THIS_STATIC (decl
) = 1;
10656 /* Record constancy and volatility. */
10659 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10662 TREE_SIDE_EFFECTS (decl
) = 1;
10663 TREE_THIS_VOLATILE (decl
) = 1;
10670 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10671 An empty exprlist is a parmlist. An exprlist which
10672 contains only identifiers at the global level
10673 is a parmlist. Otherwise, it is an exprlist. */
10676 parmlist_is_exprlist (exprs
)
10679 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10682 if (toplevel_bindings_p ())
10684 /* At the global level, if these are all identifiers,
10685 then it is a parmlist. */
10688 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10690 exprs
= TREE_CHAIN (exprs
);
10697 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10700 C++: also subroutine of `start_function'. */
10703 require_complete_types_for_parms (parms
)
10706 if (processing_template_decl
)
10711 tree type
= TREE_TYPE (parms
);
10712 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10714 if (DECL_NAME (parms
))
10715 error ("parameter `%s' has incomplete type",
10716 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10718 error ("parameter has incomplete type");
10719 TREE_TYPE (parms
) = error_mark_node
;
10722 /* If the arg types are incomplete in a declaration,
10723 they must include undefined tags.
10724 These tags can never be defined in the scope of the declaration,
10725 so the types can never be completed,
10726 and no call can be compiled successfully. */
10727 /* This is not the right behavior for C++, but not having
10728 it is also probably wrong. */
10731 /* Now warn if is a pointer to an incomplete type. */
10732 while (TREE_CODE (type
) == POINTER_TYPE
10733 || TREE_CODE (type
) == REFERENCE_TYPE
)
10734 type
= TREE_TYPE (type
);
10735 type
= TYPE_MAIN_VARIANT (type
);
10736 if (TYPE_SIZE (type
) == NULL_TREE
)
10738 if (DECL_NAME (parm
) != NULL_TREE
)
10739 warning ("parameter `%s' points to incomplete type",
10740 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10742 warning ("parameter points to incomplete type");
10746 parms
= TREE_CHAIN (parms
);
10750 /* Decode the list of parameter types for a function type.
10751 Given the list of things declared inside the parens,
10752 return a list of types.
10754 The list we receive can have three kinds of elements:
10755 an IDENTIFIER_NODE for names given without types,
10756 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10757 or void_type_node, to mark the end of an argument list
10758 when additional arguments are not permitted (... was not used).
10760 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10761 a mere declaration. A nonempty identifier-list gets an error message
10762 when FUNCDEF_FLAG is zero.
10763 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10764 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10766 If all elements of the input list contain types,
10767 we return a list of the types.
10768 If all elements contain no type (except perhaps a void_type_node
10769 at the end), we return a null list.
10770 If some have types and some do not, it is an error, and we
10771 return a null list.
10773 Also set last_function_parms to either
10774 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10775 A list of names is converted to a chain of PARM_DECLs
10776 by store_parm_decls so that ultimately it is always a chain of decls.
10778 Note that in C++, parameters can take default values. These default
10779 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10780 an error to specify default values which are followed by parameters
10781 that have no default values, or an ELLIPSES. For simplicities sake,
10782 only parameters which are specified with their types can take on
10786 grokparms (first_parm
, funcdef_flag
)
10790 tree result
= NULL_TREE
;
10791 tree decls
= NULL_TREE
;
10793 if (first_parm
!= NULL_TREE
10794 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10796 if (! funcdef_flag
)
10797 pedwarn ("parameter names (without types) in function declaration");
10798 last_function_parms
= first_parm
;
10801 else if (first_parm
!= NULL_TREE
10802 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10803 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10804 my_friendly_abort (145);
10807 /* Types were specified. This is a list of declarators
10808 each represented as a TREE_LIST node. */
10809 register tree parm
, chain
;
10810 int any_init
= 0, any_error
= 0;
10812 if (first_parm
!= NULL_TREE
)
10814 tree last_result
= NULL_TREE
;
10815 tree last_decl
= NULL_TREE
;
10817 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10819 tree type
= NULL_TREE
, list_node
= parm
;
10820 register tree decl
= TREE_VALUE (parm
);
10821 tree init
= TREE_PURPOSE (parm
);
10823 chain
= TREE_CHAIN (parm
);
10824 /* @@ weak defense against parse errors. */
10825 if (TREE_CODE (decl
) != VOID_TYPE
10826 && TREE_CODE (decl
) != TREE_LIST
)
10828 /* Give various messages as the need arises. */
10829 if (TREE_CODE (decl
) == STRING_CST
)
10830 cp_error ("invalid string constant `%E'", decl
);
10831 else if (TREE_CODE (decl
) == INTEGER_CST
)
10832 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10836 if (TREE_CODE (decl
) != VOID_TYPE
)
10838 decl
= grokdeclarator (TREE_VALUE (decl
),
10839 TREE_PURPOSE (decl
),
10840 PARM
, init
!= NULL_TREE
,
10844 type
= TREE_TYPE (decl
);
10845 if (TREE_CODE (type
) == VOID_TYPE
)
10846 decl
= void_type_node
;
10847 else if (TREE_CODE (type
) == METHOD_TYPE
)
10849 if (DECL_NAME (decl
))
10850 /* Cannot use the decl here because
10851 we don't have DECL_CONTEXT set up yet. */
10852 cp_error ("parameter `%D' invalidly declared method type",
10855 error ("parameter invalidly declared method type");
10856 type
= build_pointer_type (type
);
10857 TREE_TYPE (decl
) = type
;
10859 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10861 if (DECL_NAME (decl
))
10862 cp_error ("parameter `%D' invalidly declared offset type",
10865 error ("parameter invalidly declared offset type");
10866 type
= build_pointer_type (type
);
10867 TREE_TYPE (decl
) = type
;
10869 else if (TREE_CODE (type
) == RECORD_TYPE
10870 && TYPE_LANG_SPECIFIC (type
)
10871 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10873 abstract_virtuals_error (decl
, type
);
10874 any_error
= 1; /* Seems like a good idea. */
10876 else if (TREE_CODE (type
) == RECORD_TYPE
10877 && TYPE_LANG_SPECIFIC (type
)
10878 && IS_SIGNATURE (type
))
10880 signature_error (decl
, type
);
10881 any_error
= 1; /* Seems like a good idea. */
10883 else if (POINTER_TYPE_P (type
))
10886 while (POINTER_TYPE_P (t
)
10887 || (TREE_CODE (t
) == ARRAY_TYPE
10888 && TYPE_DOMAIN (t
) != NULL_TREE
))
10890 if (TREE_CODE (t
) == ARRAY_TYPE
)
10891 cp_error ("parameter type `%T' includes pointer to array of unknown bound",
10896 if (TREE_CODE (decl
) == VOID_TYPE
)
10898 if (result
== NULL_TREE
)
10900 result
= void_list_node
;
10901 last_result
= result
;
10905 TREE_CHAIN (last_result
) = void_list_node
;
10906 last_result
= void_list_node
;
10909 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10910 error ("`void' in parameter list must be entire list");
10914 /* Since there is a prototype, args are passed in their own types. */
10915 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10916 #ifdef PROMOTE_PROTOTYPES
10917 if ((TREE_CODE (type
) == INTEGER_TYPE
10918 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10919 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10920 DECL_ARG_TYPE (decl
) = integer_type_node
;
10927 if (TREE_CODE (init
) == SAVE_EXPR
)
10928 PARM_DECL_EXPR (init
) = 1;
10929 else if (processing_template_decl
)
10931 /* Unparsed default arg from in-class decl. */
10932 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10934 else if (TREE_CODE (init
) == VAR_DECL
10935 || TREE_CODE (init
) == PARM_DECL
)
10937 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10939 /* ``Local variables may not be used in default
10940 argument expressions.'' dpANSI C++ 8.2.6 */
10941 /* If extern int i; within a function is not
10942 considered a local variable, then this code is
10944 cp_error ("local variable `%D' may not be used as a default argument", init
);
10947 else if (TREE_READONLY_DECL_P (init
))
10948 init
= decl_constant_value (init
);
10951 init
= require_instantiated_type (type
, init
, integer_zero_node
);
10952 if (! processing_template_decl
10953 && init
!= error_mark_node
10954 && TREE_CODE (init
) != DEFAULT_ARG
10955 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
10956 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10957 TREE_TYPE (init
), decl
);
10963 if (decls
== NULL_TREE
)
10970 TREE_CHAIN (last_decl
) = decl
;
10973 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
10975 TREE_PURPOSE (list_node
) = init
;
10976 TREE_VALUE (list_node
) = type
;
10977 TREE_CHAIN (list_node
) = NULL_TREE
;
10980 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
10981 if (result
== NULL_TREE
)
10983 result
= list_node
;
10984 last_result
= result
;
10988 TREE_CHAIN (last_result
) = list_node
;
10989 last_result
= list_node
;
10993 TREE_CHAIN (last_result
) = NULL_TREE
;
10994 /* If there are no parameters, and the function does not end
10995 with `...', then last_decl will be NULL_TREE. */
10996 if (last_decl
!= NULL_TREE
)
10997 TREE_CHAIN (last_decl
) = NULL_TREE
;
11001 last_function_parms
= decls
;
11003 /* In a fcn definition, arg types must be complete. */
11004 if (funcdef_flag
> 0)
11005 require_complete_types_for_parms (last_function_parms
);
11010 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11011 FUNCTION_TYPE with the newly parsed version of its default argument, which
11012 was previously digested as text. See snarf_defarg et al in lex.c. */
11015 replace_defarg (arg
, init
)
11018 if (! processing_template_decl
11019 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11020 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11021 TREE_TYPE (init
), TREE_VALUE (arg
));
11022 TREE_PURPOSE (arg
) = init
;
11029 tree t
= FUNCTION_ARG_CHAIN (d
);
11030 if (DECL_CONSTRUCTOR_P (d
)
11031 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11032 t
= TREE_CHAIN (t
);
11033 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11034 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11035 == DECL_CLASS_CONTEXT (d
))
11036 && (TREE_CHAIN (t
) == NULL_TREE
11037 || TREE_CHAIN (t
) == void_list_node
11038 || TREE_PURPOSE (TREE_CHAIN (t
))))
11043 /* These memoizing functions keep track of special properties which
11044 a class may have. `grok_ctor_properties' notices whether a class
11045 has a constructor of the form X(X&), and also complains
11046 if the class has a constructor of the form X(X).
11047 `grok_op_properties' takes notice of the various forms of
11048 operator= which are defined, as well as what sorts of type conversion
11049 may apply. Both functions take a FUNCTION_DECL as an argument. */
11052 grok_ctor_properties (ctype
, decl
)
11055 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11056 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11058 /* When a type has virtual baseclasses, a magical first int argument is
11059 added to any ctor so we can tell if the class has been initialized
11060 yet. This could screw things up in this function, so we deliberately
11061 ignore the leading int if we're in that situation. */
11062 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11064 my_friendly_assert (parmtypes
11065 && TREE_VALUE (parmtypes
) == integer_type_node
,
11067 parmtypes
= TREE_CHAIN (parmtypes
);
11068 parmtype
= TREE_VALUE (parmtypes
);
11071 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11072 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11073 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11074 || TREE_CHAIN (parmtypes
) == void_list_node
11075 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11077 TYPE_HAS_INIT_REF (ctype
) = 1;
11078 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11079 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11081 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11082 && TREE_CHAIN (parmtypes
) != NULL_TREE
11083 && TREE_CHAIN (parmtypes
) == void_list_node
)
11085 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11087 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11090 else if (TREE_CODE (parmtype
) == VOID_TYPE
11091 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11092 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11097 /* An operator with this name can be either unary or binary. */
11103 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11104 || name
== ansi_opname
[(int) ADDR_EXPR
]
11105 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11106 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11107 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11108 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11111 /* An operator with this name can only be unary. */
11117 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11118 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11119 || name
== ansi_opname
[(int) COMPONENT_REF
]
11120 || OPERATOR_TYPENAME_P (name
));
11123 /* Do a little sanity-checking on how they declared their operator. */
11126 grok_op_properties (decl
, virtualp
, friendp
)
11128 int virtualp
, friendp
;
11130 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11131 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11132 tree name
= DECL_NAME (decl
);
11134 if (current_class_type
== NULL_TREE
)
11139 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11140 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11141 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11142 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11143 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11144 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11145 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11146 || name
== ansi_opname
[(int) MEMBER_REF
])
11147 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11148 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11149 TYPE_GETS_NEW (current_class_type
) |= 1;
11150 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11151 TYPE_GETS_DELETE (current_class_type
) |= 1;
11152 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11153 TYPE_GETS_NEW (current_class_type
) |= 2;
11154 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11155 TYPE_GETS_DELETE (current_class_type
) |= 2;
11158 if (name
== ansi_opname
[(int) NEW_EXPR
]
11159 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11161 /* When the compiler encounters the definition of A::operator new, it
11162 doesn't look at the class declaration to find out if it's static. */
11164 revert_static_member_fn (&decl
, NULL
, NULL
);
11166 /* Take care of function decl if we had syntax errors. */
11167 if (argtypes
== NULL_TREE
)
11169 = build_function_type (ptr_type_node
,
11170 hash_tree_chain (integer_type_node
,
11173 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11175 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11176 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11179 revert_static_member_fn (&decl
, NULL
, NULL
);
11181 if (argtypes
== NULL_TREE
)
11183 = build_function_type (void_type_node
,
11184 hash_tree_chain (ptr_type_node
,
11188 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11190 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11191 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11192 != void_list_node
))
11193 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11198 /* An operator function must either be a non-static member function
11199 or have at least one parameter of a class, a reference to a class,
11200 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11201 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11203 if (OPERATOR_TYPENAME_P (name
)
11204 || name
== ansi_opname
[(int) CALL_EXPR
]
11205 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11206 || name
== ansi_opname
[(int) COMPONENT_REF
]
11207 || name
== ansi_opname
[(int) ARRAY_REF
])
11208 cp_error ("`%D' must be a nonstatic member function", decl
);
11213 if (DECL_STATIC_FUNCTION_P (decl
))
11214 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11217 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11219 tree arg
= TREE_VALUE (p
);
11220 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11221 arg
= TREE_TYPE (arg
);
11223 /* This lets bad template code slip through. */
11224 if (IS_AGGR_TYPE (arg
)
11225 || TREE_CODE (arg
) == ENUMERAL_TYPE
11226 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11227 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11231 ("`%D' must have an argument of class or enumerated type",
11238 if (name
== ansi_opname
[(int) CALL_EXPR
])
11239 return; /* No restrictions on args. */
11241 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11243 tree t
= TREE_TYPE (name
);
11244 if (TREE_CODE (t
) == VOID_TYPE
)
11245 pedwarn ("void is not a valid type conversion operator");
11246 else if (! friendp
)
11248 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11251 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11253 if (t
== current_class_type
)
11254 what
= "the same type";
11255 /* Don't force t to be complete here. */
11256 else if (IS_AGGR_TYPE (t
)
11258 && DERIVED_FROM_P (t
, current_class_type
))
11259 what
= "a base class";
11262 warning ("conversion to %s%s will never use a type conversion operator",
11263 ref
? "a reference to " : "", what
);
11267 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11271 if (list_length (argtypes
) != 3 && methodp
)
11273 cp_error ("`%D' must take exactly one argument", decl
);
11276 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11278 if (copy_assignment_arg_p (parmtype
, virtualp
)
11281 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11282 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11283 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11284 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11287 else if (name
== ansi_opname
[(int) COND_EXPR
])
11290 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11291 if (list_length (argtypes
) != 4)
11292 cp_error ("`%D' must take exactly three arguments", decl
);
11294 else if (ambi_op_p (name
))
11296 if (list_length (argtypes
) == 2)
11298 else if (list_length (argtypes
) == 3)
11300 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11301 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11302 && ! processing_template_decl
11303 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11306 cp_error ("postfix `%D' must take `int' as its argument",
11310 ("postfix `%D' must take `int' as its second argument",
11317 cp_error ("`%D' must take either zero or one argument", decl
);
11319 cp_error ("`%D' must take either one or two arguments", decl
);
11322 /* More Effective C++ rule 6. */
11324 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11325 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11327 tree arg
= TREE_VALUE (argtypes
);
11328 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11329 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11330 arg
= TREE_TYPE (arg
);
11331 arg
= TYPE_MAIN_VARIANT (arg
);
11332 if (list_length (argtypes
) == 2)
11334 if (TREE_CODE (ret
) != REFERENCE_TYPE
11335 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11337 cp_warning ("prefix `%D' should return `%T'", decl
,
11338 build_reference_type (arg
));
11342 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11343 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11347 else if (unary_op_p (name
))
11349 if (list_length (argtypes
) != 2)
11352 cp_error ("`%D' must take `void'", decl
);
11354 cp_error ("`%D' must take exactly one argument", decl
);
11357 else /* if (binary_op_p (name)) */
11359 if (list_length (argtypes
) != 3)
11362 cp_error ("`%D' must take exactly one argument", decl
);
11364 cp_error ("`%D' must take exactly two arguments", decl
);
11367 /* More Effective C++ rule 7. */
11369 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11370 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11371 || name
== ansi_opname
[COMPOUND_EXPR
]))
11372 cp_warning ("user-defined `%D' always evaluates both arguments",
11376 /* Effective C++ rule 23. */
11378 && list_length (argtypes
) == 3
11379 && (name
== ansi_opname
[PLUS_EXPR
]
11380 || name
== ansi_opname
[MINUS_EXPR
]
11381 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11382 || name
== ansi_opname
[MULT_EXPR
])
11383 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11384 cp_warning ("`%D' should return by value", decl
);
11388 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11389 if (TREE_PURPOSE (argtypes
))
11391 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11392 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11393 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11396 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11399 cp_error ("`%D' cannot have default arguments", decl
);
11404 /* Get the struct, enum or union (CODE says which) with tag NAME.
11405 Define the tag as a forward-reference if it is not defined.
11407 C++: If a class derivation is given, process it here, and report
11408 an error if multiple derivation declarations are not identical.
11410 If this is a definition, come in through xref_tag and only look in
11411 the current frame for the name (since C++ allows new names in any
11415 xref_tag (code_type_node
, name
, binfo
, globalize
)
11416 tree code_type_node
;
11420 enum tag_types tag_code
;
11421 enum tree_code code
;
11423 register tree ref
, t
;
11424 struct binding_level
*b
= inner_binding_level
;
11426 tree attributes
= NULL_TREE
;
11428 /* If we are called from the parser, code_type_node will sometimes be a
11429 TREE_LIST. This indicates that the user wrote
11430 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11432 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11434 attributes
= TREE_PURPOSE (code_type_node
);
11435 code_type_node
= TREE_VALUE (code_type_node
);
11438 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11443 case signature_type
:
11444 code
= RECORD_TYPE
;
11450 code
= ENUMERAL_TYPE
;
11453 my_friendly_abort (18);
11456 /* If a cross reference is requested, look up the type
11457 already defined for this tag and return it. */
11458 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11461 name
= TYPE_IDENTIFIER (t
);
11465 t
= IDENTIFIER_TYPE_VALUE (name
);
11466 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11467 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11472 if (pedantic
&& t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11473 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11475 cp_pedwarn ("redeclaration of template type-parameter `%T'", name
);
11476 cp_pedwarn_at (" previously declared here", t
);
11478 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11481 /* If we know we are defining this tag, only look it up in
11482 this scope and don't try to find it as a type. */
11483 ref
= lookup_tag (code
, name
, b
, 1);
11487 if (current_class_type
11488 && template_class_depth (current_class_type
)
11489 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11490 /* Since GLOBALIZE is non-zero, we are not looking at a
11491 definition of this tag. Since, in addition, we are currently
11492 processing a (member) template declaration of a template
11493 class, we don't want to do any lookup at all; consider:
11500 { template <class V>
11501 friend struct S1; };
11503 Here, the S2::S1 declaration should not be confused with the
11504 outer declaration. In particular, the inner version should
11505 have a template parameter of level 2, not level 1. This
11506 would be particularly important if the member declaration
11509 template <class V = U> friend struct S1;
11511 say, when we should tsubst into `U' when instantiating S2. */
11518 ref
= lookup_tag (code
, name
, b
, 0);
11522 /* Try finding it as a type declaration. If that wins,
11524 ref
= lookup_name (name
, 1);
11526 if (ref
!= NULL_TREE
11527 && processing_template_decl
11528 && DECL_CLASS_TEMPLATE_P (ref
)
11529 && template_class_depth (current_class_type
) == 0)
11530 /* Since GLOBALIZE is true, we're declaring a global
11531 template, so we want this type. */
11532 ref
= DECL_RESULT (ref
);
11534 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11535 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11536 ref
= TREE_TYPE (ref
);
11543 push_obstacks_nochange ();
11547 /* If no such tag is yet defined, create a forward-reference node
11548 and record it as the "definition".
11549 When a real declaration of this type is found,
11550 the forward-reference will be altered into a real type. */
11552 /* In C++, since these migrate into the global scope, we must
11553 build them on the permanent obstack. */
11555 temp
= allocation_temporary_p ();
11557 end_temporary_allocation ();
11559 if (code
== ENUMERAL_TYPE
)
11561 cp_error ("use of enum `%#D' without previous declaration", name
);
11563 ref
= make_node (ENUMERAL_TYPE
);
11565 /* Give the type a default layout like unsigned int
11566 to avoid crashing if it does not get defined. */
11567 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11568 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11569 TREE_UNSIGNED (ref
) = 1;
11570 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11571 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11572 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11574 /* Enable us to recognize when a type is created in class context.
11575 To do nested classes correctly, this should probably be cleared
11576 out when we leave this classes scope. Currently this in only
11577 done in `start_enum'. */
11579 pushtag (name
, ref
, globalize
);
11583 struct binding_level
*old_b
= class_binding_level
;
11585 ref
= make_lang_type (code
);
11587 if (tag_code
== signature_type
)
11589 SET_SIGNATURE (ref
);
11590 /* Since a signature type will be turned into the type
11591 of signature tables, it's not only an interface. */
11592 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11593 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11594 /* A signature doesn't have a vtable. */
11595 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11598 #ifdef NONNESTED_CLASSES
11599 /* Class types don't nest the way enums do. */
11600 class_binding_level
= (struct binding_level
*)0;
11602 pushtag (name
, ref
, globalize
);
11603 class_binding_level
= old_b
;
11608 /* If it no longer looks like a nested type, make sure it's
11610 If it is not an IDENTIFIER, this is not a declaration */
11611 if (b
->namespace_p
&& !class_binding_level
11612 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11614 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11615 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11618 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11619 redeclare_class_template (ref
, current_template_parms
);
11623 xref_basetypes (code_type_node
, name
, ref
, binfo
);
11625 /* Until the type is defined, tentatively accept whatever
11626 structure tag the user hands us. */
11627 if (TYPE_SIZE (ref
) == NULL_TREE
11628 && ref
!= current_class_type
11629 /* Have to check this, in case we have contradictory tag info. */
11630 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11632 if (tag_code
== class_type
)
11633 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11634 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11635 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11640 TREE_TYPE (ref
) = attributes
;
11646 xref_tag_from_type (old
, id
, globalize
)
11650 tree code_type_node
;
11652 if (TREE_CODE (old
) == RECORD_TYPE
)
11653 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11654 ? class_type_node
: record_type_node
);
11656 code_type_node
= union_type_node
;
11658 if (id
== NULL_TREE
)
11659 id
= TYPE_IDENTIFIER (old
);
11661 return xref_tag (code_type_node
, id
, NULL_TREE
, globalize
);
11665 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11666 tree code_type_node
;
11670 /* In the declaration `A : X, Y, ... Z' we mark all the types
11671 (A, X, Y, ..., Z) so we can check for duplicates. */
11674 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11676 if (tag_code
== union_type
)
11678 cp_error ("derived union `%T' invalid", ref
);
11682 len
= list_length (binfo
);
11683 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11685 SET_CLASSTYPE_MARKED (ref
);
11686 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11688 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11690 /* The base of a derived struct is public by default. */
11692 = (TREE_PURPOSE (binfo
) == access_public_node
11693 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11694 || (tag_code
!= class_type
11695 && (TREE_PURPOSE (binfo
) == access_default_node
11696 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11698 = (TREE_PURPOSE (binfo
) == access_protected_node
11699 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11701 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11702 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11703 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11704 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11705 tree basetype
= TREE_VALUE (binfo
);
11708 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11709 basetype
= TREE_TYPE (basetype
);
11711 || (TREE_CODE (basetype
) != RECORD_TYPE
11712 && TREE_CODE (basetype
) != TYPENAME_TYPE
11713 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11714 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11716 cp_error ("base type `%T' fails to be a struct or class type",
11717 TREE_VALUE (binfo
));
11721 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11724 /* This code replaces similar code in layout_basetypes.
11725 We put the complete_type first for implicit `typename'. */
11726 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11727 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11729 cp_error ("base class `%T' has incomplete type", basetype
);
11735 if (CLASSTYPE_MARKED (basetype
))
11737 if (basetype
== ref
)
11738 cp_error ("recursive type `%T' undefined", basetype
);
11740 cp_error ("duplicate base type `%T' invalid", basetype
);
11744 if (TYPE_FOR_JAVA (basetype
)
11745 && current_lang_stack
== current_lang_base
)
11746 TYPE_FOR_JAVA (ref
) = 1;
11748 /* Note that the BINFO records which describe individual
11749 inheritances are *not* shared in the lattice! They
11750 cannot be shared because a given baseclass may be
11751 inherited with different `accessibility' by different
11752 derived classes. (Each BINFO record describing an
11753 individual inheritance contains flags which say what
11754 the `accessibility' of that particular inheritance is.) */
11756 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11757 TYPE_BINFO_VTABLE (basetype
),
11758 TYPE_BINFO_VIRTUALS (basetype
), NULL_TREE
);
11760 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11761 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11762 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11763 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11764 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11766 SET_CLASSTYPE_MARKED (basetype
);
11768 /* We are free to modify these bits because they are meaningless
11769 at top level, and BASETYPE is a top-level type. */
11770 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11772 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11773 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11776 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11777 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11778 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
11783 TREE_VEC_LENGTH (binfos
) = i
;
11785 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11788 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11790 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11791 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11792 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11793 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11795 /* Unmark all the types. */
11797 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11798 CLEAR_CLASSTYPE_MARKED (ref
);
11804 tree current_local_enum
= NULL_TREE
;
11806 /* Begin compiling the definition of an enumeration type.
11807 NAME is its name (or null if anonymous).
11808 Returns the type object, as yet incomplete.
11809 Also records info about it so that build_enumerator
11810 may be used to declare the individual values as they are read. */
11816 register tree enumtype
= NULL_TREE
;
11817 struct binding_level
*b
= inner_binding_level
;
11819 /* We are wasting space here and putting these on the permanent_obstack so
11820 that typeid(local enum) will work correctly. */
11822 if (processing_template_decl
&& current_function_decl
)
11825 end_temporary_allocation ();
11827 /* If this is the real definition for a previous forward reference,
11828 fill in the contents in the same object that used to be the
11829 forward reference. */
11831 if (name
!= NULL_TREE
)
11832 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11834 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11835 cp_error ("multiple definition of `%#T'", enumtype
);
11838 enumtype
= make_node (ENUMERAL_TYPE
);
11839 pushtag (name
, enumtype
, 0);
11842 if (current_class_type
)
11843 TREE_ADDRESSABLE (b
->tags
) = 1;
11845 current_local_enum
= NULL_TREE
;
11847 /* We don't copy this value because build_enumerator needs to do it. */
11848 enum_next_value
= integer_zero_node
;
11851 GNU_xref_decl (current_function_decl
, enumtype
);
11855 /* After processing and defining all the values of an enumeration type,
11856 install their decls in the enumeration type and finish it off.
11857 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11858 Returns ENUMTYPE. */
11861 finish_enum (enumtype
, values
)
11862 register tree enumtype
, values
;
11864 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11865 /* Calculate the maximum value of any enumerator in this type. */
11871 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11876 /* The TREE_VALUE is a CONST_DECL for this enumeration
11878 decl
= TREE_VALUE (pair
);
11880 /* The type of the CONST_DECL is the type of the enumeration,
11881 not an INTEGER_TYPE. */
11882 TREE_TYPE (decl
) = enumtype
;
11884 /* The DECL_INITIAL will be NULL if we are processing a
11885 template declaration and this enumeration constant had no
11886 explicit initializer. */
11887 value
= DECL_INITIAL (decl
);
11890 /* Set the TREE_TYPE for the VALUE as well. When
11891 processing a template, however, we might have a
11892 TEMPLATE_PARM_INDEX, and we should not change the
11893 type of such a thing. */
11894 if (TREE_CODE (value
) == TEMPLATE_PARM_INDEX
)
11895 DECL_INITIAL (decl
) = value
11896 = build1 (NOP_EXPR
, enumtype
, value
);
11897 TREE_TYPE (value
) = enumtype
;
11900 minnode
= maxnode
= value
;
11901 else if (tree_int_cst_lt (maxnode
, value
))
11903 else if (tree_int_cst_lt (value
, minnode
))
11907 /* In the list we're building up, we want the enumeration
11908 values, not the CONST_DECLs. */
11909 TREE_VALUE (pair
) = value
;
11913 maxnode
= minnode
= integer_zero_node
;
11915 TYPE_VALUES (enumtype
) = nreverse (values
);
11917 if (processing_template_decl
)
11919 if (current_function_decl
)
11921 add_tree (build_min (TAG_DEFN
, enumtype
));
11922 resume_temporary_allocation ();
11928 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
11929 int lowprec
= min_precision (minnode
, unsignedp
);
11930 int highprec
= min_precision (maxnode
, unsignedp
);
11931 int precision
= MAX (lowprec
, highprec
);
11933 TYPE_SIZE (enumtype
) = NULL_TREE
;
11935 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11937 TYPE_PRECISION (enumtype
) = precision
;
11939 fixup_unsigned_type (enumtype
);
11941 fixup_signed_type (enumtype
);
11943 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
11944 /* Use the width of the narrowest normal C type which is wide enough. */
11945 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
11948 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
11950 TYPE_SIZE (enumtype
) = 0;
11951 layout_type (enumtype
);
11957 /* Fix up all variant types of this enum type. */
11958 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
11959 tem
= TYPE_NEXT_VARIANT (tem
))
11961 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
11962 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
11963 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
11964 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
11965 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
11966 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
11967 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
11968 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
11969 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
11973 /* Finish debugging output for this type. */
11974 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
11979 /* Build and install a CONST_DECL for one value of the
11980 current enumeration type (one that was begun with start_enum).
11981 Return a tree-list containing the name and its value.
11982 Assignment of sequential values by default is handled here. */
11985 build_enumerator (name
, value
)
11990 /* Remove no-op casts from the value. */
11992 STRIP_TYPE_NOPS (value
);
11994 if (! processing_template_decl
)
11996 /* Validate and default VALUE. */
11997 if (value
!= NULL_TREE
)
11999 if (TREE_READONLY_DECL_P (value
))
12000 value
= decl_constant_value (value
);
12002 if (TREE_CODE (value
) == INTEGER_CST
)
12004 value
= default_conversion (value
);
12005 constant_expression_warning (value
);
12009 cp_error ("enumerator value for `%D' not integer constant", name
);
12014 /* Default based on previous value. */
12015 if (value
== NULL_TREE
&& ! processing_template_decl
)
12017 value
= enum_next_value
;
12019 cp_error ("overflow in enumeration values at `%D'", name
);
12022 /* Remove no-op casts from the value. */
12024 STRIP_TYPE_NOPS (value
);
12026 /* To fix MAX_VAL enum consts. (bkoz) */
12027 TREE_TYPE (value
) = integer_type_node
;
12031 /* We have to always copy here; not all INTEGER_CSTs are unshared,
12032 and there's no wedding ring. Look at size_int()...*/
12033 if (value
!= NULL_TREE
)
12034 value
= copy_node (value
);
12036 /* C++ associates enums with global, function, or class declarations. */
12038 decl
= current_scope ();
12039 if (decl
&& decl
== current_class_type
)
12041 /* This enum declaration is local to the class, so we must put
12042 it in that class's list of decls. */
12043 decl
= build_lang_field_decl (CONST_DECL
, name
, integer_type_node
);
12044 DECL_INITIAL (decl
) = value
;
12045 TREE_READONLY (decl
) = 1;
12046 pushdecl_class_level (decl
);
12047 TREE_CHAIN (decl
) = current_local_enum
;
12048 current_local_enum
= decl
;
12052 /* It's a global enum, or it's local to a function. (Note local to
12053 a function could mean local to a class method. */
12054 decl
= build_decl (CONST_DECL
, name
, integer_type_node
);
12055 DECL_INITIAL (decl
) = value
;
12056 TREE_READONLY (decl
) = 1;
12059 GNU_xref_decl (current_function_decl
, decl
);
12062 if (! processing_template_decl
)
12064 /* Set basis for default for next value. */
12065 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12066 integer_one_node
, PLUS_EXPR
);
12067 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12070 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12074 /* Called after we have finished the declaration of an enumeration
12075 type, and, perhaps, some objects whose type involves the
12076 enumeration type. DECL, if non-NULL, is the declaration of the
12079 If CURRENT_LOCAL_ENUM is NULL, the DECL is returned.
12081 If CURRENT_LOCAL_ENUM is non-NULL, it should be the CONST_DECL for
12082 the last enumeration constant of an enumeration type that is a
12083 member of a class. The enumeration constants are already chained
12084 together through their TREE_CHAIN fields. This function sets the
12085 TREE_CHAIN of the last enumeration constant to DECL. The
12086 CONST_DECL for the last enumeration constant is returned.
12088 CURRENT_LOCAL_ENUM will always be NULL when this function
12092 grok_enum_decls (decl
)
12095 tree d
= current_local_enum
;
12097 if (d
== NULL_TREE
)
12102 if (TREE_CHAIN (d
) == NULL_TREE
)
12104 TREE_CHAIN (d
) = decl
;
12107 d
= TREE_CHAIN (d
);
12110 decl
= current_local_enum
;
12111 current_local_enum
= NULL_TREE
;
12116 static int function_depth
;
12118 /* Create the FUNCTION_DECL for a function definition.
12119 DECLSPECS and DECLARATOR are the parts of the declaration;
12120 they describe the function's name and the type it returns,
12121 but twisted together in a fashion that parallels the syntax of C.
12123 This function creates a binding context for the function body
12124 as well as setting up the FUNCTION_DECL in current_function_decl.
12126 Returns 1 on success. If the DECLARATOR is not suitable for a function
12127 (it defines a datum instead), we return 0, which tells
12128 yyparse to report a parse error.
12130 For C++, we must first check whether that datum makes any sense.
12131 For example, "class A local_a(1,2);" means that variable local_a
12132 is an aggregate of type A, which should have a constructor
12133 applied to it with the argument list [1, 2].
12135 @@ There is currently no way to retrieve the storage
12136 @@ allocated to FUNCTION (or all of its parms) if we return
12137 @@ something we had previously. */
12140 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12141 tree declspecs
, declarator
, attrs
;
12145 tree ctype
= NULL_TREE
;
12148 extern int have_extern_spec
;
12149 extern int used_extern_spec
;
12150 int doing_friend
= 0;
12152 /* Sanity check. */
12153 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12154 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12156 /* Assume, until we see it does. */
12157 current_function_returns_value
= 0;
12158 current_function_returns_null
= 0;
12159 warn_about_return_type
= 0;
12161 shadowed_labels
= 0;
12162 current_function_assigns_this
= 0;
12163 current_function_just_assigned_this
= 0;
12164 current_function_parms_stored
= 0;
12165 original_result_rtx
= NULL_RTX
;
12166 base_init_expr
= NULL_TREE
;
12167 current_base_init_list
= NULL_TREE
;
12168 current_member_init_list
= NULL_TREE
;
12169 ctor_label
= dtor_label
= NULL_TREE
;
12170 static_labelno
= 0;
12172 clear_temp_name ();
12174 /* This should only be done once on the top most decl. */
12175 if (have_extern_spec
&& !used_extern_spec
)
12177 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12178 used_extern_spec
= 1;
12183 decl1
= declarator
;
12186 /* What was this testing for, exactly? */
12187 if (! DECL_ARGUMENTS (decl1
)
12188 && !DECL_STATIC_FUNCTION_P (decl1
)
12189 && !DECL_ARTIFICIAL (decl1
)
12190 && DECL_CLASS_SCOPE_P (decl1
)
12191 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12192 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12194 tree binding
= binding_for_name (DECL_NAME (decl1
),
12195 current_namespace
);
12196 cp_error ("redeclaration of `%#D'", decl1
);
12197 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12198 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12199 else if (BINDING_VALUE (binding
))
12200 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12204 fntype
= TREE_TYPE (decl1
);
12205 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12206 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12208 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12209 class is in the (lexical) scope of the class in which it is
12211 if (!ctype
&& DECL_FRIEND_P (decl1
))
12213 ctype
= DECL_CLASS_CONTEXT (decl1
);
12215 /* CTYPE could be null here if we're dealing with a template;
12216 for example, `inline friend float foo()' inside a template
12217 will have no CTYPE set. */
12218 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12224 /* In a fcn definition, arg types must be complete. */
12225 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12227 /* In case some arg types were completed since the declaration was
12228 parsed, fix up the decls. */
12230 tree t
= DECL_ARGUMENTS (decl1
);
12231 for (; t
; t
= TREE_CHAIN (t
))
12232 layout_decl (t
, 0);
12235 last_function_parms
= DECL_ARGUMENTS (decl1
);
12236 last_function_parm_tags
= NULL_TREE
;
12240 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12241 /* If the declarator is not suitable for a function definition,
12242 cause a syntax error. */
12243 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12245 fntype
= TREE_TYPE (decl1
);
12247 restype
= TREE_TYPE (fntype
);
12248 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12249 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12251 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12252 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12253 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12254 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12255 fntype
= build_function_type (integer_type_node
,
12256 TYPE_ARG_TYPES (fntype
));
12258 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12260 TYPE_ARG_TYPES (fntype
));
12261 TREE_TYPE (decl1
) = fntype
;
12264 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12265 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12266 else if (DECL_MAIN_P (decl1
))
12268 /* If this doesn't return integer_type, complain. */
12269 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12271 if (pedantic
|| warn_return_type
)
12272 pedwarn ("return type for `main' changed to `int'");
12273 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12275 warn_about_return_type
= 0;
12279 /* Warn if function was previously implicitly declared
12280 (but not if we warned then). */
12281 if (! warn_implicit
12282 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12283 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12285 current_function_decl
= decl1
;
12286 /* Save the parm names or decls from this function's declarator
12287 where store_parm_decls will find them. */
12288 current_function_parms
= last_function_parms
;
12289 current_function_parm_tags
= last_function_parm_tags
;
12291 announce_function (decl1
);
12293 if (! processing_template_decl
)
12295 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12297 cp_error ("return-type `%#T' is an incomplete type",
12298 TREE_TYPE (fntype
));
12300 /* Make it return void instead, but don't change the
12301 type of the DECL_RESULT, in case we have a named return value. */
12304 = build_cplus_method_type (build_type_variant (ctype
,
12305 TREE_READONLY (decl1
),
12306 TREE_SIDE_EFFECTS (decl1
)),
12308 FUNCTION_ARG_CHAIN (decl1
));
12311 = build_function_type (void_type_node
,
12312 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12313 DECL_RESULT (decl1
)
12314 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12315 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12316 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12319 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12320 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12321 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12324 if (warn_about_return_type
)
12325 pedwarn ("return-type defaults to `int'");
12327 /* Effective C++ rule 15. See also c_expand_return. */
12329 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12330 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12331 cp_warning ("`operator=' should return a reference to `*this'");
12333 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12334 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12335 DECL_INITIAL (decl1
) = error_mark_node
;
12337 /* This function exists in static storage.
12338 (This does not mean `static' in the C sense!) */
12339 TREE_STATIC (decl1
) = 1;
12341 /* Set up current_class_type, and enter the scope of the class, if
12344 push_nested_class (ctype
, 1);
12345 else if (DECL_STATIC_FUNCTION_P (decl1
))
12346 push_nested_class (DECL_CONTEXT (decl1
), 2);
12348 /* We must call push_template_decl after current_class_type is set
12349 up. (If we are processing inline definitions after exiting a
12350 class scope, current_class_type will be NULL_TREE until set above
12351 by push_nested_class.) */
12352 if (processing_template_decl
)
12353 decl1
= push_template_decl (decl1
);
12355 /* Record the decl so that the function name is defined.
12356 If we already have a decl for this name, and it is a FUNCTION_DECL,
12357 use the old decl. */
12358 if (!processing_template_decl
&& pre_parsed_p
== 0)
12360 /* A specialization is not used to guide overload resolution. */
12361 if ((flag_guiding_decls
12362 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12363 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12364 decl1
= pushdecl (decl1
);
12367 /* We need to set the DECL_CONTEXT. */
12368 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12369 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12370 /* And make sure we have enough default args. */
12371 check_default_args (decl1
);
12373 DECL_MAIN_VARIANT (decl1
) = decl1
;
12374 fntype
= TREE_TYPE (decl1
);
12377 current_function_decl
= decl1
;
12379 if (DECL_INTERFACE_KNOWN (decl1
))
12381 tree ctx
= hack_decl_function_context (decl1
);
12383 if (DECL_NOT_REALLY_EXTERN (decl1
))
12384 DECL_EXTERNAL (decl1
) = 0;
12386 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12387 && TREE_PUBLIC (ctx
))
12388 /* This is a function in a local class in an extern inline
12390 comdat_linkage (decl1
);
12392 /* If this function belongs to an interface, it is public.
12393 If it belongs to someone else's interface, it is also external.
12394 It doesn't matter whether it's inline or not. */
12395 else if (interface_unknown
== 0
12396 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12397 || flag_alt_external_templates
))
12399 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12400 || processing_template_decl
)
12401 DECL_EXTERNAL (decl1
)
12403 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12405 DECL_EXTERNAL (decl1
) = 0;
12406 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12407 DECL_INTERFACE_KNOWN (decl1
) = 1;
12411 /* This is a definition, not a reference.
12412 So clear DECL_EXTERNAL. */
12413 DECL_EXTERNAL (decl1
) = 0;
12415 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12416 && ! DECL_INTERFACE_KNOWN (decl1
)
12417 /* Don't try to defer nested functions for now. */
12418 && ! hack_decl_function_context (decl1
))
12419 DECL_DEFER_OUTPUT (decl1
) = 1;
12421 DECL_INTERFACE_KNOWN (decl1
) = 1;
12424 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12426 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12427 TREE_TYPE (decl1
) = fntype
12428 = build_function_type (TREE_TYPE (fntype
),
12429 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12430 current_function_parms
= TREE_CHAIN (current_function_parms
);
12431 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12434 restype
= TREE_TYPE (fntype
);
12438 /* If we're compiling a friend function, neither of the variables
12439 current_class_ptr nor current_class_type will have values. */
12440 if (! doing_friend
)
12442 /* We know that this was set up by `grokclassfn'.
12443 We do not wait until `store_parm_decls', since evil
12444 parse errors may never get us to that point. Here
12445 we keep the consistency between `current_class_type'
12446 and `current_class_ptr'. */
12447 tree t
= current_function_parms
;
12449 my_friendly_assert (t
!= NULL_TREE
12450 && TREE_CODE (t
) == PARM_DECL
, 162);
12452 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12454 int i
= suspend_momentary ();
12456 /* Fool build_indirect_ref. */
12457 current_class_ptr
= NULL_TREE
;
12458 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12459 current_class_ptr
= t
;
12460 resume_momentary (i
);
12463 /* We're having a signature pointer here. */
12464 current_class_ref
= current_class_ptr
= t
;
12470 if (!DECL_STATIC_FUNCTION_P (decl1
))
12471 push_memoized_context (NULL_TREE
, 1);
12472 current_class_ptr
= current_class_ref
= NULL_TREE
;
12476 current_binding_level
->parm_flag
= 1;
12478 GNU_xref_function (decl1
, current_function_parms
);
12481 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12482 make_function_rtl (decl1
);
12484 /* Promote the value to int before returning it. */
12485 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12486 restype
= type_promotes_to (restype
);
12488 /* If this fcn was already referenced via a block-scope `extern' decl
12489 (or an implicit decl), propagate certain information about the usage. */
12490 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12491 TREE_ADDRESSABLE (decl1
) = 1;
12493 if (DECL_RESULT (decl1
) == NULL_TREE
)
12495 DECL_RESULT (decl1
)
12496 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12497 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12498 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12501 /* Allocate further tree nodes temporarily during compilation
12502 of this function only. Tiemann moved up here from bottom of fn. */
12503 /* If this is a nested function, then we must continue to allocate RTL
12504 on the permanent obstack in case we need to inline it later. */
12505 if (! hack_decl_function_context (decl1
))
12506 temporary_allocation ();
12508 if (processing_template_decl
)
12510 ++minimal_parse_mode
;
12511 last_tree
= DECL_SAVED_TREE (decl1
)
12512 = build_nt (EXPR_STMT
, void_zero_node
);
12517 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12518 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12520 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12521 ctor_label
= NULL_TREE
;
12525 dtor_label
= NULL_TREE
;
12526 if (DECL_CONSTRUCTOR_P (decl1
))
12527 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12533 /* Called after store_parm_decls for a function-try-block. We need to update
12534 last_parm_cleanup_insn so that the base initializers for a constructor
12535 are run within this block, not before it. */
12538 expand_start_early_try_stmts ()
12540 expand_start_try_stmts ();
12541 last_parm_cleanup_insn
= get_last_insn ();
12544 /* Store the parameter declarations into the current function declaration.
12545 This is called after parsing the parameter declarations, before
12546 digesting the body of the function.
12548 Also install to binding contour return value identifier, if any. */
12551 store_parm_decls ()
12553 register tree fndecl
= current_function_decl
;
12554 register tree parm
;
12555 int parms_have_cleanups
= 0;
12556 tree cleanups
= NULL_TREE
;
12558 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12559 tree specparms
= current_function_parms
;
12561 /* This is a list of types declared among parms in a prototype. */
12562 tree parmtags
= current_function_parm_tags
;
12564 /* This is a chain of any other decls that came in among the parm
12565 declarations. If a parm is declared with enum {foo, bar} x;
12566 then CONST_DECLs for foo and bar are put here. */
12567 tree nonparms
= NULL_TREE
;
12569 if (toplevel_bindings_p ())
12570 fatal ("parse errors have confused me too much");
12572 /* Initialize RTL machinery. */
12573 init_function_start (fndecl
, input_filename
, lineno
);
12575 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12576 declare_function_name ();
12578 /* Create a binding level for the parms. */
12579 expand_start_bindings (0);
12581 if (specparms
!= NULL_TREE
)
12583 /* This case is when the function was defined with an ANSI prototype.
12584 The parms already have decls, so we need not do anything here
12585 except record them as in effect
12586 and complain if any redundant old-style parm decls were written. */
12588 register tree next
;
12590 /* Must clear this because it might contain TYPE_DECLs declared
12592 storedecls (NULL_TREE
);
12594 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12596 next
= TREE_CHAIN (parm
);
12597 if (TREE_CODE (parm
) == PARM_DECL
)
12600 if (DECL_NAME (parm
) == NULL_TREE
)
12604 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12605 cp_error ("parameter `%D' declared void", parm
);
12608 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12609 A parameter is assumed not to have any side effects.
12610 If this should change for any reason, then this
12611 will have to wrap the bashed reference type in a save_expr.
12613 Also, if the parameter type is declared to be an X
12614 and there is an X(X&) constructor, we cannot lay it
12615 into the stack (any more), so we make this parameter
12616 look like it is really of reference type. Functions
12617 which pass parameters to this function will know to
12618 create a temporary in their frame, and pass a reference
12621 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12622 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12623 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12627 if (! processing_template_decl
12628 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12630 expand_decl (parm
);
12631 parms_have_cleanups
= 1;
12633 /* Keep track of the cleanups. */
12634 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12639 /* If we find an enum constant or a type tag,
12640 put it aside for the moment. */
12641 TREE_CHAIN (parm
) = NULL_TREE
;
12642 nonparms
= chainon (nonparms
, parm
);
12646 /* Get the decls in their original chain order
12647 and record in the function. This is all and only the
12648 PARM_DECLs that were pushed into scope by the loop above. */
12649 DECL_ARGUMENTS (fndecl
) = getdecls ();
12651 storetags (chainon (parmtags
, gettags ()));
12654 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12656 /* Now store the final chain of decls for the arguments
12657 as the decl-chain of the current lexical scope.
12658 Put the enumerators in as well, at the front so that
12659 DECL_ARGUMENTS is not modified. */
12661 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12663 /* Initialize the RTL code for the function. */
12664 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12665 if (! processing_template_decl
)
12666 expand_function_start (fndecl
, parms_have_cleanups
);
12668 current_function_parms_stored
= 1;
12670 /* If this function is `main', emit a call to `__main'
12671 to run global initializers, etc. */
12672 if (DECL_MAIN_P (fndecl
))
12673 expand_main_function ();
12675 /* Now that we have initialized the parms, we can start their
12676 cleanups. We cannot do this before, since expand_decl_cleanup
12677 should not be called before the parm can be used. */
12679 && ! processing_template_decl
)
12681 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12683 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12684 cp_error ("parser lost in parsing declaration of `%D'",
12685 TREE_PURPOSE (cleanups
));
12689 /* Create a binding contour which can be used to catch
12690 cleanup-generated temporaries. Also, if the return value needs or
12691 has initialization, deal with that now. */
12692 if (parms_have_cleanups
)
12695 expand_start_bindings (0);
12698 if (! processing_template_decl
&& flag_exceptions
)
12700 /* Do the starting of the exception specifications, if we have any. */
12701 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12702 expand_start_eh_spec ();
12705 last_parm_cleanup_insn
= get_last_insn ();
12706 last_dtor_insn
= get_last_insn ();
12709 /* Bind a name and initialization to the return value of
12710 the current function. */
12713 store_return_init (return_id
, init
)
12714 tree return_id
, init
;
12716 tree decl
= DECL_RESULT (current_function_decl
);
12719 /* Give this error as many times as there are occurrences,
12720 so that users can use Emacs compilation buffers to find
12721 and fix all such places. */
12722 pedwarn ("ANSI C++ does not permit named return values");
12724 if (return_id
!= NULL_TREE
)
12726 if (DECL_NAME (decl
) == NULL_TREE
)
12728 DECL_NAME (decl
) = return_id
;
12729 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12732 cp_error ("return identifier `%D' already in place", decl
);
12735 /* Can't let this happen for constructors. */
12736 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12738 error ("can't redefine default return value for constructors");
12742 /* If we have a named return value, put that in our scope as well. */
12743 if (DECL_NAME (decl
) != NULL_TREE
)
12745 /* If this named return value comes in a register,
12746 put it in a pseudo-register. */
12747 if (DECL_REGISTER (decl
))
12749 original_result_rtx
= DECL_RTL (decl
);
12750 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12753 /* Let `cp_finish_decl' know that this initializer is ok. */
12754 DECL_INITIAL (decl
) = init
;
12757 if (minimal_parse_mode
)
12758 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12759 copy_to_permanent (init
)));
12761 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12766 /* Finish up a function declaration and compile that function
12767 all the way to assembler language output. The free the storage
12768 for the function definition.
12770 This is called after parsing the body of the function definition.
12771 LINENO is the current line number.
12773 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12774 (and expand_end_bindings) must be made to take care of the binding
12775 contour for the base initializers. This is only relevant for
12778 NESTED is nonzero if we were in the middle of compiling another function
12779 when we started on this one. */
12782 finish_function (lineno
, call_poplevel
, nested
)
12787 register tree fndecl
= current_function_decl
;
12788 tree fntype
, ctype
= NULL_TREE
;
12789 rtx last_parm_insn
, insns
;
12790 /* Label to use if this function is supposed to return a value. */
12791 tree no_return_label
= NULL_TREE
;
12792 tree decls
= NULL_TREE
;
12794 /* When we get some parse errors, we can end up without a
12795 current_function_decl, so cope. */
12796 if (fndecl
== NULL_TREE
)
12799 if (! nested
&& function_depth
> 1)
12802 fntype
= TREE_TYPE (fndecl
);
12804 /* TREE_READONLY (fndecl) = 1;
12805 This caused &foo to be of type ptr-to-const-function
12806 which then got a warning when stored in a ptr-to-function variable. */
12808 /* This happens on strange parse errors. */
12809 if (! current_function_parms_stored
)
12812 store_parm_decls ();
12815 if (processing_template_decl
)
12817 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12819 decls
= getdecls ();
12820 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12821 poplevel (decls
!= NULL_TREE
, 0, 0);
12826 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12828 tree ttype
= target_type (fntype
);
12831 if (IS_AGGR_TYPE (ttype
))
12832 /* Let debugger know it should output info for this type. */
12833 note_debug_info_needed (ttype
);
12835 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12837 ttype
= target_type (TREE_TYPE (parmdecl
));
12838 if (IS_AGGR_TYPE (ttype
))
12839 /* Let debugger know it should output info for this type. */
12840 note_debug_info_needed (ttype
);
12844 /* Clean house because we will need to reorder insns here. */
12845 do_pending_stack_adjust ();
12849 tree binfo
= TYPE_BINFO (current_class_type
);
12850 tree cond
= integer_one_node
;
12852 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12854 int ok_to_optimize_dtor
= 0;
12855 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12857 if (current_function_assigns_this
)
12858 cond
= build (NE_EXPR
, boolean_type_node
,
12859 current_class_ptr
, integer_zero_node
);
12862 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12864 /* If this destructor is empty, then we don't need to check
12865 whether `this' is NULL in some cases. */
12866 if ((flag_this_is_variable
& 1) == 0)
12867 ok_to_optimize_dtor
= 1;
12868 else if (empty_dtor
)
12869 ok_to_optimize_dtor
12870 = (n_baseclasses
== 0
12871 || (n_baseclasses
== 1
12872 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12875 /* These initializations might go inline. Protect
12876 the binding level of the parms. */
12878 expand_start_bindings (0);
12880 if (current_function_assigns_this
)
12882 current_function_assigns_this
= 0;
12883 current_function_just_assigned_this
= 0;
12886 /* Generate the code to call destructor on base class.
12887 If this destructor belongs to a class with virtual
12888 functions, then set the virtual function table
12889 pointer to represent the type of our base class. */
12891 /* This side-effect makes call to `build_delete' generate the
12892 code we have to have at the end of this destructor. */
12893 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12895 /* These are two cases where we cannot delegate deletion. */
12896 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12897 || TYPE_GETS_REG_DELETE (current_class_type
))
12898 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12899 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12901 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12902 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12904 /* If we did not assign to this, then `this' is non-zero at
12905 the end of a destructor. As a special optimization, don't
12906 emit test if this is an empty destructor. If it does nothing,
12907 it does nothing. If it calls a base destructor, the base
12908 destructor will perform the test. */
12910 if (exprstmt
!= error_mark_node
12911 && (TREE_CODE (exprstmt
) != NOP_EXPR
12912 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12913 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12915 expand_label (dtor_label
);
12916 if (cond
!= integer_one_node
)
12917 expand_start_cond (cond
, 0);
12918 if (exprstmt
!= void_zero_node
)
12919 /* Don't call `expand_expr_stmt' if we're not going to do
12920 anything, since -Wall will give a diagnostic. */
12921 expand_expr_stmt (exprstmt
);
12923 /* Run destructor on all virtual baseclasses. */
12924 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12926 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12927 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12928 in_charge_node
, integer_two_node
), 0);
12931 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12933 tree vb
= get_vbase
12934 (BINFO_TYPE (vbases
),
12935 TYPE_BINFO (current_class_type
));
12937 (build_scoped_method_call
12938 (current_class_ref
, vb
, dtor_identifier
,
12939 build_expr_list (NULL_TREE
, integer_zero_node
)));
12941 vbases
= TREE_CHAIN (vbases
);
12943 expand_end_cond ();
12946 do_pending_stack_adjust ();
12947 if (cond
!= integer_one_node
)
12948 expand_end_cond ();
12951 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
12953 virtual_size
= c_sizeof (current_class_type
);
12955 /* At the end, call delete if that's what's requested. */
12957 /* FDIS sez: At the point of definition of a virtual destructor
12958 (including an implicit definition), non-placement operator
12959 delete shall be looked up in the scope of the destructor's
12960 class and if found shall be accessible and unambiguous.
12962 This is somewhat unclear, but I take it to mean that if the
12963 class only defines placement deletes we don't do anything here.
12964 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
12965 for us if they ever try to delete one of these. */
12967 if (TYPE_GETS_REG_DELETE (current_class_type
)
12968 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12969 exprstmt
= build_op_delete_call
12970 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
12971 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
12973 exprstmt
= NULL_TREE
;
12977 cond
= build (BIT_AND_EXPR
, integer_type_node
,
12978 in_charge_node
, integer_one_node
);
12979 expand_start_cond (cond
, 0);
12980 expand_expr_stmt (exprstmt
);
12981 expand_end_cond ();
12984 /* End of destructor. */
12985 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
12986 poplevel (2, 0, 0); /* XXX change to 1 */
12988 /* Back to the top of destructor. */
12989 /* Don't execute destructor code if `this' is NULL. */
12993 /* If the dtor is empty, and we know there is not possible way we
12994 could use any vtable entries, before they are possibly set by
12995 a base class dtor, we don't have to setup the vtables, as we
12996 know that any base class dtoring will set up any vtables it
12997 needs. We avoid MI, because one base class dtor can do a
12998 virtual dispatch to an overridden function that would need to
12999 have a non-related vtable set up, we cannot avoid setting up
13000 vtables in that case. We could change this to see if there is
13001 just one vtable. */
13002 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13004 /* Make all virtual function table pointers in non-virtual base
13005 classes point to CURRENT_CLASS_TYPE's virtual function
13007 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13009 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13010 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13013 if (! ok_to_optimize_dtor
)
13015 cond
= build_binary_op (NE_EXPR
,
13016 current_class_ptr
, integer_zero_node
, 1);
13017 expand_start_cond (cond
, 0);
13020 insns
= get_insns ();
13023 last_parm_insn
= get_first_nonparm_insn ();
13024 if (last_parm_insn
== NULL_RTX
)
13025 last_parm_insn
= get_last_insn ();
13027 last_parm_insn
= previous_insn (last_parm_insn
);
13029 emit_insns_after (insns
, last_parm_insn
);
13031 if (! ok_to_optimize_dtor
)
13032 expand_end_cond ();
13034 else if (current_function_assigns_this
)
13036 /* Does not need to call emit_base_init, because
13037 that is done (if needed) just after assignment to this
13040 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13042 end_protect_partials ();
13043 expand_label (ctor_label
);
13044 ctor_label
= NULL_TREE
;
13048 decls
= getdecls ();
13049 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13050 poplevel (decls
!= NULL_TREE
, 0, 0);
13052 /* c_expand_return knows to return 'this' from a constructor. */
13053 c_expand_return (NULL_TREE
);
13055 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13056 && return_label
!= NULL_RTX
)
13057 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13059 current_function_assigns_this
= 0;
13060 current_function_just_assigned_this
= 0;
13061 base_init_expr
= NULL_TREE
;
13063 else if (DECL_CONSTRUCTOR_P (fndecl
))
13065 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13066 /* Allow constructor for a type to get a new instance of the object
13067 using `build_new'. */
13068 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13069 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13071 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13073 if (flag_this_is_variable
> 0)
13075 cond
= build_binary_op (EQ_EXPR
,
13076 current_class_ptr
, integer_zero_node
, 1);
13077 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13078 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13081 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13085 if (flag_this_is_variable
> 0)
13087 expand_start_cond (cond
, 0);
13088 expand_expr_stmt (thenclause
);
13089 expand_end_cond ();
13092 /* Emit insns from `emit_base_init' which sets up virtual
13093 function table pointer(s). */
13094 if (base_init_expr
)
13096 expand_expr_stmt (base_init_expr
);
13097 base_init_expr
= NULL_TREE
;
13100 insns
= get_insns ();
13103 /* This is where the body of the constructor begins. */
13105 emit_insns_after (insns
, last_parm_cleanup_insn
);
13107 end_protect_partials ();
13109 /* This is where the body of the constructor ends. */
13110 expand_label (ctor_label
);
13111 ctor_label
= NULL_TREE
;
13115 decls
= getdecls ();
13116 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13117 poplevel (decls
!= NULL_TREE
, 1, 0);
13120 /* c_expand_return knows to return 'this' from a constructor. */
13121 c_expand_return (NULL_TREE
);
13123 current_function_assigns_this
= 0;
13124 current_function_just_assigned_this
= 0;
13126 else if (DECL_MAIN_P (fndecl
))
13128 /* Make it so that `main' always returns 0 by default. */
13130 c_expand_return (integer_one_node
);
13132 c_expand_return (integer_zero_node
);
13135 else if (return_label
!= NULL_RTX
13136 && current_function_return_value
== NULL_TREE
13137 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13138 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13140 if (flag_exceptions
)
13141 expand_exception_blocks ();
13143 /* If this function is supposed to return a value, ensure that
13144 we do not fall into the cleanups by mistake. The end of our
13145 function will look like this:
13147 user code (may have return stmt somewhere)
13148 goto no_return_label
13153 NOTE_INSN_FUNCTION_END
13157 If the user omits a return stmt in the USER CODE section, we
13158 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13159 Otherwise, we won't. */
13160 if (no_return_label
)
13162 DECL_CONTEXT (no_return_label
) = fndecl
;
13163 DECL_INITIAL (no_return_label
) = error_mark_node
;
13164 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13165 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13166 expand_goto (no_return_label
);
13171 /* Remove the binding contour which is used
13172 to catch cleanup-generated temporaries. */
13173 expand_end_bindings (0, 0, 0);
13174 poplevel (0, 0, 0);
13176 /* Emit label at beginning of cleanup code for parameters. */
13177 emit_label (cleanup_label
);
13180 /* Get return value into register if that's where it's supposed to be. */
13181 if (original_result_rtx
)
13182 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13184 /* Finish building code that will trigger warnings if users forget
13185 to make their functions return values. */
13186 if (no_return_label
|| cleanup_label
)
13187 emit_jump (return_label
);
13188 if (no_return_label
)
13190 /* We don't need to call `expand_*_return' here because we
13191 don't need any cleanups here--this path of code is only
13192 for error checking purposes. */
13193 expand_label (no_return_label
);
13196 /* Generate rtl for function exit. */
13197 expand_function_end (input_filename
, lineno
, 1);
13200 /* This must come after expand_function_end because cleanups might
13201 have declarations (from inline functions) that need to go into
13202 this function's blocks. */
13203 if (current_binding_level
->parm_flag
!= 1)
13204 my_friendly_abort (122);
13205 poplevel (1, 0, 1);
13207 /* Reset scope for C++: if we were in the scope of a class,
13208 then when we finish this function, we are not longer so.
13209 This cannot be done until we know for sure that no more
13210 class members will ever be referenced in this function
13211 (i.e., calls to destructors). */
13212 if (current_class_name
)
13214 ctype
= current_class_type
;
13215 pop_nested_class (1);
13218 pop_memoized_context (1);
13220 /* Must mark the RESULT_DECL as being in this function. */
13221 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13223 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13224 to the FUNCTION_DECL node itself. */
13225 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13227 if (! processing_template_decl
)
13229 int saved_flag_keep_inline_functions
=
13230 flag_keep_inline_functions
;
13232 /* So we can tell if jump_optimize sets it to 1. */
13235 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13236 && hack_decl_function_context (fndecl
))
13237 /* Trick rest_of_compilation into not deferring output of this
13238 function, even if it is inline, since the rtl_obstack for
13239 this function is the function_obstack of the enclosing
13240 function and will be deallocated when the enclosing
13241 function is gone. See save_tree_status. */
13242 flag_keep_inline_functions
= 1;
13244 /* Run the optimizers and output the assembler code for this
13247 if (DECL_ARTIFICIAL (fndecl
))
13249 /* Do we really *want* to inline this synthesized method? */
13251 int save_fif
= flag_inline_functions
;
13252 flag_inline_functions
= 1;
13254 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13255 will check our size. */
13256 DECL_INLINE (fndecl
) = 0;
13258 rest_of_compilation (fndecl
);
13259 flag_inline_functions
= save_fif
;
13262 rest_of_compilation (fndecl
);
13264 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13266 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13268 /* Set DECL_EXTERNAL so that assemble_external will be called as
13269 necessary. We'll clear it again in finish_file. */
13270 if (! DECL_EXTERNAL (fndecl
))
13271 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13272 DECL_EXTERNAL (fndecl
) = 1;
13273 mark_inline_for_output (fndecl
);
13276 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13277 note_debug_info_needed (ctype
);
13279 current_function_returns_null
|= can_reach_end
;
13281 /* Since we don't normally go through c_expand_return for constructors,
13282 this normally gets the wrong value.
13283 Also, named return values have their return codes emitted after
13284 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13285 if (DECL_CONSTRUCTOR_P (fndecl
)
13286 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13287 current_function_returns_null
= 0;
13289 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13290 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13291 else if ((warn_return_type
|| pedantic
)
13292 && current_function_returns_null
13293 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13295 /* If this function returns non-void and control can drop through,
13297 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13299 /* With just -W, complain only if function returns both with
13300 and without a value. */
13301 else if (extra_warnings
13302 && current_function_returns_value
&& current_function_returns_null
)
13303 warning ("this function may return with or without a value");
13308 /* Free all the tree nodes making up this function. */
13309 /* Switch back to allocating nodes permanently
13310 until we start another function. */
13311 if (processing_template_decl
)
13313 --minimal_parse_mode
;
13314 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13318 permanent_allocation (1);
13320 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13324 /* Stop pointing to the local nodes about to be freed. */
13325 /* But DECL_INITIAL must remain nonzero so we know this
13326 was an actual function definition. */
13327 DECL_INITIAL (fndecl
) = error_mark_node
;
13328 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13329 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13332 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13333 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13334 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13335 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13339 /* Let the error reporting routines know that we're outside a
13340 function. For a nested function, this value is used in
13341 pop_cp_function_context and then reset via pop_function_context. */
13342 current_function_decl
= NULL_TREE
;
13345 named_label_uses
= NULL
;
13346 current_class_ptr
= NULL_TREE
;
13347 current_class_ref
= NULL_TREE
;
13350 /* Create the FUNCTION_DECL for a function definition.
13351 LINE1 is the line number that the definition absolutely begins on.
13352 LINE2 is the line number that the name of the function appears on.
13353 DECLSPECS and DECLARATOR are the parts of the declaration;
13354 they describe the return type and the name of the function,
13355 but twisted together in a fashion that parallels the syntax of C.
13357 This function creates a binding context for the function body
13358 as well as setting up the FUNCTION_DECL in current_function_decl.
13360 Returns a FUNCTION_DECL on success.
13362 If the DECLARATOR is not suitable for a function (it defines a datum
13363 instead), we return 0, which tells yyparse to report a parse error.
13365 May return void_type_node indicating that this method is actually
13366 a friend. See grokfield for more details.
13368 Came here with a `.pushlevel' .
13370 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13371 CHANGES TO CODE IN `grokfield'. */
13374 start_method (declspecs
, declarator
)
13375 tree declarator
, declspecs
;
13377 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13380 /* Something too ugly to handle. */
13381 if (fndecl
== NULL_TREE
)
13384 /* Pass friends other than inline friend functions back. */
13385 if (fndecl
== void_type_node
)
13388 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13389 /* Not a function, tell parser to report parse error. */
13392 if (IS_SIGNATURE (current_class_type
))
13393 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13395 if (DECL_IN_AGGR_P (fndecl
))
13397 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13399 if (DECL_CONTEXT (fndecl
)
13400 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13401 cp_error ("`%D' is already defined in class %s", fndecl
,
13402 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13404 return void_type_node
;
13407 DECL_THIS_INLINE (fndecl
) = 1;
13409 if (flag_default_inline
)
13410 DECL_INLINE (fndecl
) = 1;
13412 /* We process method specializations in finish_struct_1. */
13413 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13414 fndecl
= push_template_decl (fndecl
);
13416 /* We read in the parameters on the maybepermanent_obstack,
13417 but we won't be getting back to them until after we
13418 may have clobbered them. So the call to preserve_data
13419 will keep them safe. */
13422 if (! DECL_FRIEND_P (fndecl
))
13424 if (TREE_CHAIN (fndecl
))
13426 fndecl
= copy_node (fndecl
);
13427 TREE_CHAIN (fndecl
) = NULL_TREE
;
13430 if (DECL_CONSTRUCTOR_P (fndecl
))
13432 if (! grok_ctor_properties (current_class_type
, fndecl
))
13433 return void_type_node
;
13435 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13436 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13439 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13441 /* Make a place for the parms */
13443 current_binding_level
->parm_flag
= 1;
13445 DECL_IN_AGGR_P (fndecl
) = 1;
13449 /* Go through the motions of finishing a function definition.
13450 We don't compile this method until after the whole class has
13453 FINISH_METHOD must return something that looks as though it
13454 came from GROKFIELD (since we are defining a method, after all).
13456 This is called after parsing the body of the function definition.
13457 STMTS is the chain of statements that makes up the function body.
13459 DECL is the ..._DECL that `start_method' provided. */
13462 finish_method (decl
)
13465 register tree fndecl
= decl
;
13468 register tree link
;
13470 if (decl
== void_type_node
)
13473 old_initial
= DECL_INITIAL (fndecl
);
13475 /* Undo the level for the parms (from start_method).
13476 This is like poplevel, but it causes nothing to be
13477 saved. Saving information here confuses symbol-table
13478 output routines. Besides, this information will
13479 be correctly output when this method is actually
13482 /* Clear out the meanings of the local variables of this level;
13483 also record in each decl which block it belongs to. */
13485 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13487 if (DECL_NAME (link
) != NULL_TREE
)
13488 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13489 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13490 DECL_CONTEXT (link
) = NULL_TREE
;
13493 /* Restore all name-meanings of the outer levels
13494 that were shadowed by this level. */
13496 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13497 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13498 for (link
= current_binding_level
->class_shadowed
;
13499 link
; link
= TREE_CHAIN (link
))
13500 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13501 for (link
= current_binding_level
->type_shadowed
;
13502 link
; link
= TREE_CHAIN (link
))
13503 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13505 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13506 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13507 current_binding_level
->parm_flag
,
13508 current_binding_level
->keep
);
13510 poplevel (0, 0, 0);
13512 DECL_INITIAL (fndecl
) = old_initial
;
13514 /* We used to check if the context of FNDECL was different from
13515 current_class_type as another way to get inside here. This didn't work
13516 for String.cc in libg++. */
13517 if (DECL_FRIEND_P (fndecl
))
13519 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13520 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13521 decl
= void_type_node
;
13527 /* Called when a new struct TYPE is defined.
13528 If this structure or union completes the type of any previous
13529 variable declaration, lay it out and output its rtl. */
13532 hack_incomplete_structures (type
)
13537 if (current_binding_level
->incomplete
== NULL_TREE
)
13540 if (!type
) /* Don't do this for class templates. */
13543 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13545 tree decl
= TREE_VALUE (*list
);
13546 if ((decl
&& TREE_TYPE (decl
) == type
)
13547 || (TREE_TYPE (decl
)
13548 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13549 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13551 int toplevel
= toplevel_bindings_p ();
13552 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13553 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13554 layout_type (TREE_TYPE (decl
));
13555 layout_decl (decl
, 0);
13556 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13560 expand_decl (decl
);
13561 cleanup
= maybe_build_cleanup (decl
);
13562 expand_decl_init (decl
);
13563 if (! expand_decl_cleanup (decl
, cleanup
))
13564 cp_error ("parser lost in parsing declaration of `%D'",
13567 *list
= TREE_CHAIN (*list
);
13570 list
= &TREE_CHAIN (*list
);
13574 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13575 See build_delete for information about AUTO_DELETE.
13577 Don't build these on the momentary obstack; they must live
13578 the life of the binding contour. */
13581 maybe_build_cleanup_1 (decl
, auto_delete
)
13582 tree decl
, auto_delete
;
13584 tree type
= TREE_TYPE (decl
);
13585 if (TYPE_NEEDS_DESTRUCTOR (type
))
13587 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13590 if (TREE_CODE (decl
) != PARM_DECL
)
13591 temp
= suspend_momentary ();
13593 if (TREE_CODE (type
) == ARRAY_TYPE
)
13597 mark_addressable (decl
);
13598 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13601 /* Optimize for space over speed here. */
13602 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13603 || flag_expensive_optimizations
)
13604 flags
|= LOOKUP_NONVIRTUAL
;
13606 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13608 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13609 && ! TYPE_HAS_DESTRUCTOR (type
))
13610 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13611 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13613 if (TREE_CODE (decl
) != PARM_DECL
)
13614 resume_momentary (temp
);
13621 /* If DECL is of a type which needs a cleanup, build that cleanup
13622 here. The cleanup does free the storage with a call to delete. */
13625 maybe_build_cleanup_and_delete (decl
)
13628 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13631 /* If DECL is of a type which needs a cleanup, build that cleanup
13632 here. The cleanup does not free the storage with a call a delete. */
13635 maybe_build_cleanup (decl
)
13638 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13641 /* Expand a C++ expression at the statement level.
13642 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13643 The C++ type checker should get all of these out when
13644 expressions are combined with other, type-providing, expressions,
13645 leaving only orphan expressions, such as:
13647 &class::bar; / / takes its address, but does nothing with it. */
13650 cplus_expand_expr_stmt (exp
)
13653 if (processing_template_decl
)
13655 add_tree (build_min_nt (EXPR_STMT
, exp
));
13659 /* Arrange for all temps to disappear. */
13660 expand_start_target_temps ();
13662 if (TREE_TYPE (exp
) == unknown_type_node
)
13664 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13665 error ("address of overloaded function with no contextual type information");
13666 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13667 warning ("useless reference to a member function name, did you forget the ()?");
13671 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13673 cp_warning ("reference, not call, to function `%D'", exp
);
13674 warning ("at this point in file");
13678 /* We should do this eventually, but right now this causes regex.o from
13679 libg++ to miscompile, and tString to core dump. */
13680 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13683 /* Strip unused implicit INDIRECT_REFs of references. */
13684 if (TREE_CODE (exp
) == INDIRECT_REF
13685 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13686 exp
= TREE_OPERAND (exp
, 0);
13688 /* If we don't do this, we end up down inside expand_expr
13689 trying to do TYPE_MODE on the ERROR_MARK, and really
13690 go outside the bounds of the type. */
13691 if (exp
!= error_mark_node
)
13692 expand_expr_stmt (break_out_cleanups (exp
));
13695 /* Clean up any pending cleanups. This happens when a function call
13696 returns a cleanup-needing value that nobody uses. */
13697 expand_end_target_temps ();
13700 /* When a stmt has been parsed, this function is called.
13702 Currently, this function only does something within a
13703 constructor's scope: if a stmt has just assigned to this,
13704 and we are in a derived class, we call `emit_base_init'. */
13709 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13712 if (current_function_assigns_this
13713 || ! current_function_just_assigned_this
)
13715 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13717 /* Constructors must wait until we are out of control
13718 zones before calling base constructors. */
13719 if (cond_stack
|| loop_stack
|| case_stack
)
13721 expand_expr_stmt (base_init_expr
);
13722 check_base_init (current_class_type
);
13724 current_function_assigns_this
= 1;
13727 /* Change a static member function definition into a FUNCTION_TYPE, instead
13728 of the METHOD_TYPE that we create when it's originally parsed.
13730 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13731 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13732 other decls. Either pass the addresses of local variables or NULL. */
13735 revert_static_member_fn (decl
, fn
, argtypes
)
13736 tree
*decl
, *fn
, *argtypes
;
13739 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13740 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13742 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13743 cp_error ("static member function `%#D' declared const", *decl
);
13744 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13745 cp_error ("static member function `%#D' declared volatile", *decl
);
13747 args
= TREE_CHAIN (args
);
13748 tmp
= build_function_type (TREE_TYPE (function
), args
);
13749 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13750 TYPE_VOLATILE (function
));
13751 tmp
= build_exception_variant (tmp
,
13752 TYPE_RAISES_EXCEPTIONS (function
));
13753 TREE_TYPE (*decl
) = tmp
;
13754 if (DECL_ARGUMENTS (*decl
))
13755 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13756 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13764 id_in_current_class (id
)
13767 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13774 int warn_about_return_type
;
13776 int just_assigned_this
;
13778 int temp_name_counter
;
13780 tree shadowed_labels
;
13783 rtx last_dtor_insn
;
13784 rtx last_parm_cleanup_insn
;
13785 tree base_init_list
;
13786 tree member_init_list
;
13787 tree base_init_expr
;
13788 tree current_class_ptr
;
13789 tree current_class_ref
;
13791 struct cp_function
*next
;
13792 struct binding_level
*binding_level
;
13793 int static_labelno
;
13796 static struct cp_function
*cp_function_chain
;
13798 extern int temp_name_counter
;
13800 /* Save and reinitialize the variables
13801 used during compilation of a C++ function. */
13804 push_cp_function_context (context
)
13807 struct cp_function
*p
13808 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13810 push_function_context_to (context
);
13812 p
->next
= cp_function_chain
;
13813 cp_function_chain
= p
;
13815 p
->named_labels
= named_labels
;
13816 p
->shadowed_labels
= shadowed_labels
;
13817 p
->returns_value
= current_function_returns_value
;
13818 p
->returns_null
= current_function_returns_null
;
13819 p
->warn_about_return_type
= warn_about_return_type
;
13820 p
->binding_level
= current_binding_level
;
13821 p
->ctor_label
= ctor_label
;
13822 p
->dtor_label
= dtor_label
;
13823 p
->last_dtor_insn
= last_dtor_insn
;
13824 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13825 p
->assigns_this
= current_function_assigns_this
;
13826 p
->just_assigned_this
= current_function_just_assigned_this
;
13827 p
->parms_stored
= current_function_parms_stored
;
13828 p
->result_rtx
= original_result_rtx
;
13829 p
->base_init_expr
= base_init_expr
;
13830 p
->temp_name_counter
= temp_name_counter
;
13831 p
->base_init_list
= current_base_init_list
;
13832 p
->member_init_list
= current_member_init_list
;
13833 p
->current_class_ptr
= current_class_ptr
;
13834 p
->current_class_ref
= current_class_ref
;
13835 p
->static_labelno
= static_labelno
;
13838 /* Restore the variables used during compilation of a C++ function. */
13841 pop_cp_function_context (context
)
13844 struct cp_function
*p
= cp_function_chain
;
13847 /* Bring back all the labels that were shadowed. */
13848 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13849 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13850 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13851 TREE_VALUE (link
));
13853 pop_function_context_from (context
);
13855 cp_function_chain
= p
->next
;
13857 named_labels
= p
->named_labels
;
13858 shadowed_labels
= p
->shadowed_labels
;
13859 current_function_returns_value
= p
->returns_value
;
13860 current_function_returns_null
= p
->returns_null
;
13861 warn_about_return_type
= p
->warn_about_return_type
;
13862 current_binding_level
= p
->binding_level
;
13863 ctor_label
= p
->ctor_label
;
13864 dtor_label
= p
->dtor_label
;
13865 last_dtor_insn
= p
->last_dtor_insn
;
13866 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13867 current_function_assigns_this
= p
->assigns_this
;
13868 current_function_just_assigned_this
= p
->just_assigned_this
;
13869 current_function_parms_stored
= p
->parms_stored
;
13870 original_result_rtx
= p
->result_rtx
;
13871 base_init_expr
= p
->base_init_expr
;
13872 temp_name_counter
= p
->temp_name_counter
;
13873 current_base_init_list
= p
->base_init_list
;
13874 current_member_init_list
= p
->member_init_list
;
13875 current_class_ptr
= p
->current_class_ptr
;
13876 current_class_ref
= p
->current_class_ref
;
13877 static_labelno
= p
->static_labelno
;
13885 return function_depth
!= 0;