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 #if HOST_BITS_PER_WIDE_INT >= 64
233 tree intTI_type_node
;
236 tree unsigned_intQI_type_node
;
237 tree unsigned_intHI_type_node
;
238 tree unsigned_intSI_type_node
;
239 tree unsigned_intDI_type_node
;
240 #if HOST_BITS_PER_WIDE_INT >= 64
241 tree unsigned_intTI_type_node
;
244 tree java_byte_type_node
;
245 tree java_short_type_node
;
246 tree java_int_type_node
;
247 tree java_long_type_node
;
248 tree java_float_type_node
;
249 tree java_double_type_node
;
250 tree java_char_type_node
;
251 tree java_boolean_type_node
;
253 /* A VOID_TYPE node, and the same, packaged in a TREE_LIST. */
255 tree void_type_node
, void_list_node
;
258 /* Nodes for types `void *' and `const void *'. */
261 tree const_ptr_type_node
;
263 /* Nodes for types `char *' and `const char *'. */
265 tree string_type_node
, const_string_type_node
;
267 /* Type `char[256]' or something like it.
268 Used when an array of char is needed and the size is irrelevant. */
270 tree char_array_type_node
;
272 /* Type `int[256]' or something like it.
273 Used when an array of int needed and the size is irrelevant. */
275 tree int_array_type_node
;
277 /* Type `wchar_t[256]' or something like it.
278 Used when a wide string literal is created. */
280 tree wchar_array_type_node
;
282 /* The bool data type, and constants */
283 tree boolean_type_node
, boolean_true_node
, boolean_false_node
;
285 /* Type `int ()' -- used for implicit declaration of functions. */
287 tree default_function_type
;
289 /* Function types `double (double)' and `double (double, double)', etc. */
291 static tree double_ftype_double
, double_ftype_double_double
;
292 static tree int_ftype_int
, long_ftype_long
;
293 static tree float_ftype_float
;
294 static tree ldouble_ftype_ldouble
;
296 /* Function type `int (const void *, const void *, size_t)' */
297 static tree int_ftype_cptr_cptr_sizet
;
300 tree vtable_entry_type
;
301 tree delta_type_node
;
303 /* Old rtti stuff. */
304 tree __baselist_desc_type_node
;
305 tree __i_desc_type_node
, __m_desc_type_node
;
306 tree __t_desc_array_type
, __i_desc_array_type
, __m_desc_array_type
;
308 tree __t_desc_type_node
;
310 tree __tp_desc_type_node
;
312 tree __access_mode_type_node
;
313 tree __bltn_desc_type_node
, __user_desc_type_node
, __class_desc_type_node
;
314 tree __ptr_desc_type_node
, __attr_desc_type_node
, __func_desc_type_node
;
315 tree __ptmf_desc_type_node
, __ptmd_desc_type_node
;
317 /* Not needed yet? May be needed one day? */
318 tree __bltn_desc_array_type
, __user_desc_array_type
, __class_desc_array_type
;
319 tree __ptr_desc_array_type
, __attr_dec_array_type
, __func_desc_array_type
;
320 tree __ptmf_desc_array_type
, __ptmd_desc_array_type
;
323 /* Indicates that there is a type value in some namespace, although
324 that is not necessarily in scope at the moment. */
326 static tree global_type_node
;
328 tree class_star_type_node
;
329 tree class_type_node
, record_type_node
, union_type_node
, enum_type_node
;
330 tree unknown_type_node
;
331 tree opaque_type_node
, signature_type_node
;
332 tree sigtable_entry_type
;
334 /* Array type `vtable_entry_type[]' */
336 tree vtbl_ptr_type_node
;
342 /* Expect only namespace names now. */
343 static int only_namespace_names
;
345 /* In a destructor, the point at which all derived class destroying
346 has been done, just before any base class destroying will be done. */
350 /* In a destructor, the last insn emitted after the start of the
351 function and the parms. */
353 static rtx last_dtor_insn
;
355 /* In a constructor, the last insn emitted after the start of the
356 function and the parms, the exception specification and any
357 function-try-block. The constructor initializers are emitted after
360 static rtx last_parm_cleanup_insn
;
362 /* In a constructor, the point at which we are ready to return
363 the pointer to the initialized object. */
367 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
368 one that the user will declare, but sufficient to be called
369 by routines that want to abort the program. */
373 extern rtx cleanup_label
, return_label
;
375 /* If original DECL_RESULT of current function was a register,
376 but due to being an addressable named return value, would up
377 on the stack, this variable holds the named return value's
378 original location. */
379 static rtx original_result_rtx
;
381 /* Sequence of insns which represents base initialization. */
384 /* C++: Keep these around to reduce calls to `get_identifier'.
385 Identifiers for `this' in member functions and the auto-delete
386 parameter for destructors. */
387 tree this_identifier
, in_charge_identifier
;
388 tree ctor_identifier
, dtor_identifier
;
389 /* Used in pointer to member functions, in vtables, and in sigtables. */
390 tree pfn_identifier
, index_identifier
, delta_identifier
, delta2_identifier
;
391 tree pfn_or_delta2_identifier
, tag_identifier
;
392 tree vt_off_identifier
;
394 struct named_label_list
396 struct binding_level
*binding_level
;
399 char *filename_o_goto
;
401 struct named_label_list
*next
;
404 /* A list (chain of TREE_LIST nodes) of named label uses.
405 The TREE_PURPOSE field is the list of variables defined
406 in the label's scope defined at the point of use.
407 The TREE_VALUE field is the LABEL_DECL used.
408 The TREE_TYPE field holds `current_binding_level' at the
409 point of the label's use.
411 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
413 Look at the pretty struct named_label_list. See the pretty struct
414 with the pretty named fields that describe what they do. See the
415 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
417 Used only for jumps to as-yet undefined labels, since
418 jumps to defined labels can have their validity checked
421 static struct named_label_list
*named_label_uses
= NULL
;
423 /* A list of objects which have constructors or destructors
424 which reside in the global scope. The decl is stored in
425 the TREE_VALUE slot and the initializer is stored
426 in the TREE_PURPOSE slot. */
427 tree static_aggregates
;
431 /* Two expressions that are constants with value zero.
432 The first is of type `int', the second of type `void *'. */
434 tree integer_zero_node
;
435 tree null_pointer_node
;
437 /* The value for __null (NULL), namely, a zero of an integer type with
438 the same number of bits as a pointer. */
441 /* A node for the integer constants 1, 2, and 3. */
443 tree integer_one_node
, integer_two_node
, integer_three_node
;
445 /* While defining an enum type, this is 1 plus the last enumerator
448 static tree enum_next_value
;
450 /* Nonzero means that there was overflow computing enum_next_value. */
452 static int enum_overflow
;
454 /* Parsing a function declarator leaves a list of parameter names
455 or a chain or parameter decls here. */
457 tree last_function_parms
;
459 /* Parsing a function declarator leaves here a chain of structure
460 and enum types declared in the parmlist. */
462 static tree last_function_parm_tags
;
464 /* After parsing the declarator that starts a function definition,
465 `start_function' puts here the list of parameter names or chain of decls.
466 `store_parm_decls' finds it here. */
468 static tree current_function_parms
;
470 /* Similar, for last_function_parm_tags. */
471 static tree current_function_parm_tags
;
473 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
474 that have names. Here so we can clear out their names' definitions
475 at the end of the function. */
477 static tree named_labels
;
479 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
481 static tree shadowed_labels
;
483 /* The FUNCTION_DECL for the function currently being compiled,
484 or 0 if between functions. */
485 tree current_function_decl
;
487 /* Set to 0 at beginning of a function definition, set to 1 if
488 a return statement that specifies a return value is seen. */
490 int current_function_returns_value
;
492 /* Set to 0 at beginning of a function definition, set to 1 if
493 a return statement with no argument is seen. */
495 int current_function_returns_null
;
497 /* Set to 0 at beginning of a function definition, and whenever
498 a label (case or named) is defined. Set to value of expression
499 returned from function when that value can be transformed into
500 a named return value. */
502 tree current_function_return_value
;
504 /* Set to nonzero by `grokdeclarator' for a function
505 whose return type is defaulted, if warnings for this are desired. */
507 static int warn_about_return_type
;
509 /* Nonzero means give `double' the same size as `float'. */
511 extern int flag_short_double
;
513 /* Nonzero means don't recognize any builtin functions. */
515 extern int flag_no_builtin
;
517 /* Nonzero means don't recognize the non-ANSI builtin functions.
520 extern int flag_no_nonansi_builtin
;
522 /* Nonzero means enable obscure ANSI features and disable GNU extensions
523 that might cause ANSI-compliant code to be miscompiled. */
525 extern int flag_ansi
;
527 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
529 extern int flag_huge_objects
;
531 /* Nonzero if we want to conserve space in the .o files. We do this
532 by putting uninitialized data and runtime initialized data into
533 .common instead of .data at the expense of not flagging multiple
535 extern int flag_conserve_space
;
537 /* Pointers to the base and current top of the language name stack. */
539 extern tree
*current_lang_base
, *current_lang_stack
;
541 /* C and C++ flags are in decl2.c. */
543 /* Set to 0 at beginning of a constructor, set to 1
544 if that function does an allocation before referencing its
545 instance variable. */
546 static int current_function_assigns_this
;
547 int current_function_just_assigned_this
;
549 /* Set to 0 at beginning of a function. Set non-zero when
550 store_parm_decls is called. Don't call store_parm_decls
551 if this flag is non-zero! */
552 int current_function_parms_stored
;
554 /* Flag used when debugging spew.c */
556 extern int spew_debug
;
558 /* This is a copy of the class_shadowed list of the previous class binding
559 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
560 when entering another class scope (i.e. a cache miss). */
561 extern tree previous_class_values
;
563 /* A expression of value 0 with the same precision as a sizetype
565 tree signed_size_zero_node
;
567 /* The name of the anonymous namespace, throughout this translation
569 tree anonymous_namespace_name
;
572 /* Allocate a level of searching. */
576 push_decl_level (stack
, obstack
)
577 struct stack_level
*stack
;
578 struct obstack
*obstack
;
580 struct stack_level tem
;
583 return push_stack_level (obstack
, (char *)&tem
, sizeof (tem
));
586 /* For each binding contour we allocate a binding_level structure
587 which records the names defined in that contour.
590 1) one for each function definition,
591 where internal declarations of the parameters appear.
592 2) one for each compound statement,
593 to record its declarations.
595 The current meaning of a name can be found by searching the levels
596 from the current one out to the global one.
598 Off to the side, may be the class_binding_level. This exists only
599 to catch class-local declarations. It is otherwise nonexistent.
601 Also there may be binding levels that catch cleanups that must be
602 run when exceptions occur. */
604 /* Note that the information in the `names' component of the global contour
605 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
609 /* A chain of _DECL nodes for all variables, constants, functions,
610 and typedef types. These are in the reverse of the order
614 /* A list of structure, union and enum definitions, for looking up
616 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
617 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
618 or ENUMERAL_TYPE node.
620 C++: the TREE_VALUE nodes can be simple types for
621 component_bindings. */
624 /* A list of USING_DECL nodes. */
627 /* A list of used namespaces. PURPOSE is the namespace,
628 VALUE the common ancestor with this binding_level's namespace. */
629 tree using_directives
;
631 /* For each level, a list of shadowed outer-level local definitions
632 to be restored when this level is popped.
633 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
634 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
637 /* Same, for IDENTIFIER_CLASS_VALUE. */
640 /* Same, for IDENTIFIER_TYPE_VALUE. */
643 /* For each level (except not the global one),
644 a chain of BLOCK nodes for all the levels
645 that were entered and exited one level down. */
648 /* The BLOCK node for this level, if one has been preallocated.
649 If 0, the BLOCK is allocated (if needed) when the level is popped. */
652 /* The binding level which this one is contained in (inherits from). */
653 struct binding_level
*level_chain
;
655 /* List of decls in `names' that have incomplete
656 structure or union types. */
659 /* List of VAR_DECLS saved from a previous for statement.
660 These would be dead in ANSI-conforming code, but might
661 be referenced in ARM-era code. */
662 tree dead_vars_from_for
;
664 /* 1 for the level that holds the parameters of a function.
665 2 for the level that holds a class declaration.
666 3 for levels that hold parameter declarations. */
667 unsigned parm_flag
: 4;
669 /* 1 means make a BLOCK for this level regardless of all else.
670 2 for temporary binding contours created by the compiler. */
673 /* Nonzero if this level "doesn't exist" for tags. */
674 unsigned tag_transparent
: 1;
676 /* Nonzero if this level can safely have additional
677 cleanup-needing variables added to it. */
678 unsigned more_cleanups_ok
: 1;
679 unsigned have_cleanups
: 1;
681 /* Nonzero if this level is for storing the decls for template
682 parameters and generic decls; these decls will be discarded and
683 replaced with a TEMPLATE_DECL. */
684 unsigned pseudo_global
: 1;
686 /* This is set for a namespace binding level. */
687 unsigned namespace_p
: 1;
689 /* True if this level is that of a for-statement where we need to
690 worry about ambiguous (ARM or ANSI) scope rules. */
691 unsigned is_for_scope
: 1;
693 /* Two bits left for this word. */
695 #if defined(DEBUG_CP_BINDING_LEVELS)
696 /* Binding depth at which this level began. */
697 unsigned binding_depth
;
698 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
701 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
703 /* The (non-class) binding level currently in effect. */
705 static struct binding_level
*current_binding_level
;
707 /* The binding level of the current class, if any. */
709 static struct binding_level
*class_binding_level
;
711 /* The current (class or non-class) binding level currently in effect. */
713 #define inner_binding_level \
714 (class_binding_level ? class_binding_level : current_binding_level)
716 /* A chain of binding_level structures awaiting reuse. */
718 static struct binding_level
*free_binding_level
;
720 /* The outermost binding level, for names of file scope.
721 This is created when the compiler is started and exists
722 through the entire run. */
724 static struct binding_level
*global_binding_level
;
726 /* Binding level structures are initialized by copying this one. */
728 static struct binding_level clear_binding_level
;
730 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
732 static int keep_next_level_flag
;
734 #if defined(DEBUG_CP_BINDING_LEVELS)
735 static int binding_depth
= 0;
736 static int is_class_level
= 0;
743 for (i
= 0; i
< binding_depth
*2; i
++)
746 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
748 static tree pushdecl_with_scope
PROTO((tree
, struct binding_level
*));
751 push_binding_level (newlevel
, tag_transparent
, keep
)
752 struct binding_level
*newlevel
;
753 int tag_transparent
, keep
;
755 /* Add this level to the front of the chain (stack) of levels that
757 *newlevel
= clear_binding_level
;
758 if (class_binding_level
)
760 newlevel
->level_chain
= class_binding_level
;
761 class_binding_level
= (struct binding_level
*)0;
765 newlevel
->level_chain
= current_binding_level
;
767 current_binding_level
= newlevel
;
768 newlevel
->tag_transparent
= tag_transparent
;
769 newlevel
->more_cleanups_ok
= 1;
770 newlevel
->keep
= keep
;
771 #if defined(DEBUG_CP_BINDING_LEVELS)
772 newlevel
->binding_depth
= binding_depth
;
774 fprintf (stderr
, "push %s level 0x%08x line %d\n",
775 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
778 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
784 if (class_binding_level
)
785 current_binding_level
= class_binding_level
;
787 if (global_binding_level
)
789 /* Cannot pop a level, if there are none left to pop. */
790 if (current_binding_level
== global_binding_level
)
791 my_friendly_abort (123);
793 /* Pop the current level, and free the structure for reuse. */
794 #if defined(DEBUG_CP_BINDING_LEVELS)
797 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
798 (is_class_level
) ? "class" : "block",
799 current_binding_level
, lineno
);
800 if (is_class_level
!= (current_binding_level
== class_binding_level
))
803 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
806 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
808 register struct binding_level
*level
= current_binding_level
;
809 current_binding_level
= current_binding_level
->level_chain
;
810 level
->level_chain
= free_binding_level
;
811 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
812 if (level
->binding_depth
!= binding_depth
)
814 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
815 free_binding_level
= level
;
817 class_binding_level
= current_binding_level
;
818 if (class_binding_level
->parm_flag
!= 2)
819 class_binding_level
= 0;
820 while (current_binding_level
->parm_flag
== 2)
821 current_binding_level
= current_binding_level
->level_chain
;
826 suspend_binding_level ()
828 if (class_binding_level
)
829 current_binding_level
= class_binding_level
;
831 if (global_binding_level
)
833 /* Cannot suspend a level, if there are none left to suspend. */
834 if (current_binding_level
== global_binding_level
)
835 my_friendly_abort (123);
837 /* Suspend the current level. */
838 #if defined(DEBUG_CP_BINDING_LEVELS)
841 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
842 (is_class_level
) ? "class" : "block",
843 current_binding_level
, lineno
);
844 if (is_class_level
!= (current_binding_level
== class_binding_level
))
847 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
850 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
852 current_binding_level
= current_binding_level
->level_chain
;
853 class_binding_level
= current_binding_level
;
854 if (class_binding_level
->parm_flag
!= 2)
855 class_binding_level
= 0;
856 while (current_binding_level
->parm_flag
== 2)
857 current_binding_level
= current_binding_level
->level_chain
;
862 resume_binding_level (b
)
863 struct binding_level
*b
;
865 /* Resuming binding levels is meant only for namespaces,
866 and those cannot nest into classes. */
867 my_friendly_assert(!class_binding_level
, 386);
868 /* Also, resuming a non-directly nested namespace is a no-no. */
869 my_friendly_assert(b
->level_chain
== current_binding_level
, 386);
870 current_binding_level
= b
;
871 #if defined(DEBUG_CP_BINDING_LEVELS)
872 b
->binding_depth
= binding_depth
;
874 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
875 (is_class_level
) ? "class" : "block", b
, lineno
);
878 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
881 /* Create a new `struct binding_level'. */
884 struct binding_level
*
885 make_binding_level ()
888 return (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
891 /* Nonzero if we are currently in the global binding level. */
896 return current_binding_level
== global_binding_level
;
899 /* Nonzero if we are currently in a toplevel binding level. This
900 means either the global binding level or a namespace in a toplevel
902 Since there are no non-toplevel namespace levels, this really
903 means any namespace or pseudo-global level. */
906 toplevel_bindings_p ()
908 return current_binding_level
->namespace_p
909 || current_binding_level
->pseudo_global
;
912 /* Nonzero if this is a namespace scope. */
915 namespace_bindings_p ()
917 return current_binding_level
->namespace_p
;
923 keep_next_level_flag
= 1;
926 /* Nonzero if the current level needs to have a BLOCK made. */
931 return (current_binding_level
->blocks
!= NULL_TREE
932 || current_binding_level
->keep
933 || current_binding_level
->names
!= NULL_TREE
934 || (current_binding_level
->tags
!= NULL_TREE
935 && !current_binding_level
->tag_transparent
));
938 /* Identify this binding level as a level of parameters. */
941 declare_parm_level ()
943 current_binding_level
->parm_flag
= 1;
947 declare_pseudo_global_level ()
949 current_binding_level
->pseudo_global
= 1;
953 declare_namespace_level ()
955 current_binding_level
->namespace_p
= 1;
959 pseudo_global_level_p ()
961 return current_binding_level
->pseudo_global
;
965 set_class_shadows (shadows
)
968 class_binding_level
->class_shadowed
= shadows
;
971 /* Enter a new binding level.
972 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
973 not for that of tags. */
976 pushlevel (tag_transparent
)
979 register struct binding_level
*newlevel
= NULL_BINDING_LEVEL
;
981 /* If this is the top level of a function,
982 just make sure that NAMED_LABELS is 0.
983 They should have been set to 0 at the end of the previous function. */
985 if (current_binding_level
== global_binding_level
)
986 my_friendly_assert (named_labels
== NULL_TREE
, 134);
988 /* Reuse or create a struct for this binding level. */
990 #if defined(DEBUG_CP_BINDING_LEVELS)
992 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
993 if (free_binding_level
)
994 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
996 newlevel
= free_binding_level
;
997 free_binding_level
= free_binding_level
->level_chain
;
1001 newlevel
= make_binding_level ();
1004 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
1005 GNU_xref_start_scope ((HOST_WIDE_INT
) newlevel
);
1006 keep_next_level_flag
= 0;
1010 note_level_for_for ()
1012 current_binding_level
->is_for_scope
= 1;
1016 pushlevel_temporary (tag_transparent
)
1017 int tag_transparent
;
1019 pushlevel (tag_transparent
);
1020 current_binding_level
->keep
= 2;
1023 /* Note we don't call push_momentary() here. Otherwise, it would cause
1024 cleanups to be allocated on the momentary obstack, and they will be
1025 overwritten by the next statement. */
1027 expand_start_bindings (0);
1030 /* Exit a binding level.
1031 Pop the level off, and restore the state of the identifier-decl mappings
1032 that were in effect when this level was entered.
1034 If KEEP == 1, this level had explicit declarations, so
1035 and create a "block" (a BLOCK node) for the level
1036 to record its declarations and subblocks for symbol table output.
1038 If KEEP == 2, this level's subblocks go to the front,
1039 not the back of the current binding level. This happens,
1040 for instance, when code for constructors and destructors
1041 need to generate code at the end of a function which must
1042 be moved up to the front of the function.
1044 If FUNCTIONBODY is nonzero, this level is the body of a function,
1045 so create a block as if KEEP were set and also clear out all
1048 If REVERSE is nonzero, reverse the order of decls before putting
1049 them into the BLOCK. */
1052 poplevel (keep
, reverse
, functionbody
)
1058 /* The chain of decls was accumulated in reverse order.
1059 Put it into forward order, just for cleanliness. */
1061 int tmp
= functionbody
;
1062 int real_functionbody
= current_binding_level
->keep
== 2
1063 ? ((functionbody
= 0), tmp
) : functionbody
;
1064 tree tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
1065 tree subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
1066 tree block
= NULL_TREE
;
1068 int block_previously_created
;
1070 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
1071 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
1072 current_binding_level
->parm_flag
,
1073 current_binding_level
->keep
);
1075 if (current_binding_level
->keep
== 1)
1078 /* Get the decls in the order they were written.
1079 Usually current_binding_level->names is in reverse order.
1080 But parameter decls were previously put in forward order. */
1083 current_binding_level
->names
1084 = decls
= nreverse (current_binding_level
->names
);
1086 decls
= current_binding_level
->names
;
1088 /* Output any nested inline functions within this block
1089 if they weren't already output. */
1091 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1092 if (TREE_CODE (decl
) == FUNCTION_DECL
1093 && ! TREE_ASM_WRITTEN (decl
)
1094 && DECL_INITIAL (decl
) != NULL_TREE
1095 && TREE_ADDRESSABLE (decl
)
1096 && decl_function_context (decl
) == current_function_decl
)
1098 /* If this decl was copied from a file-scope decl
1099 on account of a block-scope extern decl,
1100 propagate TREE_ADDRESSABLE to the file-scope decl. */
1101 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1102 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1105 push_function_context ();
1106 output_inline_function (decl
);
1107 pop_function_context ();
1111 /* If there were any declarations or structure tags in that level,
1112 or if this level is a function body,
1113 create a BLOCK to record them for the life of this function. */
1116 block_previously_created
= (current_binding_level
->this_block
!= NULL_TREE
);
1117 if (block_previously_created
)
1118 block
= current_binding_level
->this_block
;
1119 else if (keep
== 1 || functionbody
)
1120 block
= make_node (BLOCK
);
1121 if (block
!= NULL_TREE
)
1123 if (block_previously_created
)
1125 if (decls
|| tags
|| subblocks
)
1127 if (BLOCK_VARS (block
) || BLOCK_TYPE_TAGS (block
))
1129 warning ("internal compiler error: debugging info corrupted");
1131 BLOCK_VARS (block
) = decls
;
1132 BLOCK_TYPE_TAGS (block
) = tags
;
1134 /* We can have previous subblocks and new subblocks when
1135 doing fixup_gotos with complex cleanups. We chain the new
1136 subblocks onto the end of any pre-existing subblocks. */
1137 BLOCK_SUBBLOCKS (block
) = chainon (BLOCK_SUBBLOCKS (block
),
1140 /* If we created the block earlier on, and we are just
1141 diddling it now, then it already should have a proper
1142 BLOCK_END_NOTE value associated with it. */
1146 BLOCK_VARS (block
) = decls
;
1147 BLOCK_TYPE_TAGS (block
) = tags
;
1148 BLOCK_SUBBLOCKS (block
) = subblocks
;
1149 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1150 remember_end_note (block
);
1154 /* In each subblock, record that this is its superior. */
1157 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1158 BLOCK_SUPERCONTEXT (link
) = block
;
1160 /* Clear out the meanings of the local variables of this level. */
1162 if (current_binding_level
->is_for_scope
&& flag_new_for_scope
== 1)
1164 struct binding_level
*outer
= current_binding_level
->level_chain
;
1165 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1167 if (TREE_CODE (link
) == VAR_DECL
)
1168 DECL_DEAD_FOR_LOCAL (link
) = 1;
1170 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1173 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1174 'for' scoping semantics. */
1176 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1178 tree id
= TREE_PURPOSE (link
);
1179 tree decl
= IDENTIFIER_LOCAL_VALUE (id
);
1181 if (decl
&& DECL_DEAD_FOR_LOCAL (decl
))
1183 /* In this case keep the dead for-decl visible,
1184 but remember what (if anything) it shadowed. */
1185 DECL_SHADOWED_FOR_VAR (decl
) = TREE_VALUE (link
);
1186 TREE_CHAIN (decl
) = outer
->dead_vars_from_for
;
1187 outer
->dead_vars_from_for
= decl
;
1190 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VALUE (link
);
1193 else /* Not special for scope. */
1195 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1197 if (DECL_NAME (link
) != NULL_TREE
)
1199 /* If the ident. was used or addressed via a local extern decl,
1200 don't forget that fact. */
1201 if (DECL_EXTERNAL (link
))
1203 if (TREE_USED (link
))
1204 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1205 if (TREE_ADDRESSABLE (link
))
1206 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1208 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1212 /* Restore all name-meanings of the outer levels
1213 that were shadowed by this level. */
1215 for (link
= current_binding_level
->shadowed
;
1216 link
; link
= TREE_CHAIN (link
))
1217 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1219 /* We first restore the regular decls and *then* the dead_vars_from_for
1220 to handle this case:
1224 for (int i; ; ) { ...} // i#2
1228 In this case, we want remove the binding for i#3, restoring
1229 that of i#2. Then we want to remove the binding for i#2,
1230 and restore that of i#1. */
1232 link
= current_binding_level
->dead_vars_from_for
;
1233 for (; link
!= NULL_TREE
; link
= TREE_CHAIN (link
))
1235 tree id
= DECL_NAME (link
);
1236 if (IDENTIFIER_LOCAL_VALUE (id
) == link
)
1237 IDENTIFIER_LOCAL_VALUE (id
) = DECL_SHADOWED_FOR_VAR (link
);
1240 for (link
= current_binding_level
->class_shadowed
;
1241 link
; link
= TREE_CHAIN (link
))
1242 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1243 for (link
= current_binding_level
->type_shadowed
;
1244 link
; link
= TREE_CHAIN (link
))
1245 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
1248 /* If the level being exited is the top level of a function,
1249 check over all the labels. */
1253 /* If this is the top level block of a function,
1254 the vars are the function's parameters.
1255 Don't leave them in the BLOCK because they are
1256 found in the FUNCTION_DECL instead. */
1258 BLOCK_VARS (block
) = 0;
1260 /* Clear out the definitions of all label names,
1261 since their scopes end here. */
1263 for (link
= named_labels
; link
; link
= TREE_CHAIN (link
))
1265 register tree label
= TREE_VALUE (link
);
1267 if (DECL_INITIAL (label
) == NULL_TREE
)
1269 cp_error_at ("label `%D' used but not defined", label
);
1270 /* Avoid crashing later. */
1271 define_label (input_filename
, 1, DECL_NAME (label
));
1273 else if (warn_unused
&& !TREE_USED (label
))
1274 cp_warning_at ("label `%D' defined but not used", label
);
1275 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), NULL_TREE
);
1277 /* Put the labels into the "variables" of the
1278 top-level block, so debugger can see them. */
1279 TREE_CHAIN (label
) = BLOCK_VARS (block
);
1280 BLOCK_VARS (block
) = label
;
1283 named_labels
= NULL_TREE
;
1286 /* Any uses of undefined labels now operate under constraints
1287 of next binding contour. */
1289 struct binding_level
*level_chain
;
1290 level_chain
= current_binding_level
->level_chain
;
1293 struct named_label_list
*labels
;
1294 for (labels
= named_label_uses
; labels
; labels
= labels
->next
)
1295 if (labels
->binding_level
== current_binding_level
)
1297 labels
->binding_level
= level_chain
;
1298 labels
->names_in_scope
= level_chain
->names
;
1303 tmp
= current_binding_level
->keep
;
1305 pop_binding_level ();
1307 DECL_INITIAL (current_function_decl
) = block
;
1310 if (!block_previously_created
)
1311 current_binding_level
->blocks
1312 = chainon (current_binding_level
->blocks
, block
);
1314 /* If we did not make a block for the level just exited,
1315 any blocks made for inner levels
1316 (since they cannot be recorded as subblocks in that level)
1317 must be carried forward so they will later become subblocks
1318 of something else. */
1322 current_binding_level
->blocks
1323 = chainon (subblocks
, current_binding_level
->blocks
);
1325 current_binding_level
->blocks
1326 = chainon (current_binding_level
->blocks
, subblocks
);
1329 /* Take care of compiler's internal binding structures. */
1332 expand_end_bindings (getdecls (), keep
, 1);
1333 /* Each and every BLOCK node created here in `poplevel' is important
1334 (e.g. for proper debugging information) so if we created one
1335 earlier, mark it as "used". */
1337 TREE_USED (block
) = 1;
1338 block
= poplevel (keep
, reverse
, real_functionbody
);
1341 /* Each and every BLOCK node created here in `poplevel' is important
1342 (e.g. for proper debugging information) so if we created one
1343 earlier, mark it as "used". */
1345 TREE_USED (block
) = 1;
1349 /* Delete the node BLOCK from the current binding level.
1350 This is used for the block inside a stmt expr ({...})
1351 so that the block can be reinserted where appropriate. */
1354 delete_block (block
)
1358 if (current_binding_level
->blocks
== block
)
1359 current_binding_level
->blocks
= TREE_CHAIN (block
);
1360 for (t
= current_binding_level
->blocks
; t
;)
1362 if (TREE_CHAIN (t
) == block
)
1363 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1367 TREE_CHAIN (block
) = NULL_TREE
;
1368 /* Clear TREE_USED which is always set by poplevel.
1369 The flag is set again if insert_block is called. */
1370 TREE_USED (block
) = 0;
1373 /* Insert BLOCK at the end of the list of subblocks of the
1374 current binding level. This is used when a BIND_EXPR is expanded,
1375 to handle the BLOCK node inside the BIND_EXPR. */
1378 insert_block (block
)
1381 TREE_USED (block
) = 1;
1382 current_binding_level
->blocks
1383 = chainon (current_binding_level
->blocks
, block
);
1386 /* Set the BLOCK node for the innermost scope
1387 (the one we are currently in). */
1391 register tree block
;
1393 current_binding_level
->this_block
= block
;
1396 /* Do a pushlevel for class declarations. */
1401 register struct binding_level
*newlevel
;
1403 /* Reuse or create a struct for this binding level. */
1404 #if defined(DEBUG_CP_BINDING_LEVELS)
1406 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1407 if (free_binding_level
)
1408 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1410 newlevel
= free_binding_level
;
1411 free_binding_level
= free_binding_level
->level_chain
;
1415 newlevel
= make_binding_level ();
1418 #if defined(DEBUG_CP_BINDING_LEVELS)
1420 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1422 push_binding_level (newlevel
, 0, 0);
1424 decl_stack
= push_decl_level (decl_stack
, &decl_obstack
);
1425 class_binding_level
= current_binding_level
;
1426 class_binding_level
->parm_flag
= 2;
1427 /* We have just pushed into a new binding level. Now, fake out the rest
1428 of the compiler. Set the `current_binding_level' back to point to
1429 the most closely containing non-class binding level. */
1432 current_binding_level
= current_binding_level
->level_chain
;
1434 while (current_binding_level
->parm_flag
== 2);
1437 /* ...and a poplevel for class declarations. FORCE is used to force
1438 clearing out of CLASS_VALUEs after a class definition. */
1441 poplevel_class (force
)
1444 register struct binding_level
*level
= class_binding_level
;
1445 tree block
= NULL_TREE
;
1448 my_friendly_assert (level
!= 0, 354);
1450 decl_stack
= pop_stack_level (decl_stack
);
1451 for (shadowed
= level
->shadowed
; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
1452 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1453 /* If we're leaving a toplevel class, don't bother to do the setting
1454 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1455 shouldn't even be used when current_class_type isn't set, and second,
1456 if we don't touch it here, we're able to use the cache effect if the
1457 next time we're entering a class scope, it is the same class. */
1458 if (current_class_depth
!= 1 || force
)
1459 for (shadowed
= level
->class_shadowed
;
1461 shadowed
= TREE_CHAIN (shadowed
))
1462 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1464 /* Remember to save what IDENTIFIER's were bound in this scope so we
1465 can recover from cache misses. */
1467 previous_class_type
= current_class_type
;
1468 previous_class_values
= class_binding_level
->class_shadowed
;
1470 for (shadowed
= level
->type_shadowed
;
1472 shadowed
= TREE_CHAIN (shadowed
))
1473 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
), TREE_VALUE (shadowed
));
1475 GNU_xref_end_scope ((HOST_WIDE_INT
) class_binding_level
,
1476 (HOST_WIDE_INT
) class_binding_level
->level_chain
,
1477 class_binding_level
->parm_flag
,
1478 class_binding_level
->keep
);
1480 if (class_binding_level
->parm_flag
!= 2)
1481 class_binding_level
= (struct binding_level
*)0;
1483 /* Now, pop out of the binding level which we created up in the
1484 `pushlevel_class' routine. */
1485 #if defined(DEBUG_CP_BINDING_LEVELS)
1487 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1489 pop_binding_level ();
1494 /* For debugging. */
1495 static int no_print_functions
= 0;
1496 static int no_print_builtins
= 0;
1499 print_binding_level (lvl
)
1500 struct binding_level
*lvl
;
1504 fprintf (stderr
, " blocks=");
1505 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1506 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1507 list_length (lvl
->incomplete
), lvl
->parm_flag
, lvl
->keep
);
1508 if (lvl
->tag_transparent
)
1509 fprintf (stderr
, " tag-transparent");
1510 if (lvl
->more_cleanups_ok
)
1511 fprintf (stderr
, " more-cleanups-ok");
1512 if (lvl
->have_cleanups
)
1513 fprintf (stderr
, " have-cleanups");
1514 fprintf (stderr
, "\n");
1517 fprintf (stderr
, " names:\t");
1518 /* We can probably fit 3 names to a line? */
1519 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
1521 if (no_print_functions
&& (TREE_CODE (t
) == FUNCTION_DECL
))
1523 if (no_print_builtins
1524 && (TREE_CODE (t
) == TYPE_DECL
)
1525 && (!strcmp (DECL_SOURCE_FILE (t
),"<built-in>")))
1528 /* Function decls tend to have longer names. */
1529 if (TREE_CODE (t
) == FUNCTION_DECL
)
1536 fprintf (stderr
, "\n\t");
1539 print_node_brief (stderr
, "", t
, 0);
1540 if (t
== error_mark_node
)
1544 fprintf (stderr
, "\n");
1548 fprintf (stderr
, " tags:\t");
1550 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
1552 if (TREE_PURPOSE (t
) == NULL_TREE
)
1554 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1561 fprintf (stderr
, "\n\t");
1564 if (TREE_PURPOSE (t
) == NULL_TREE
)
1566 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
1567 fprintf (stderr
, ">");
1569 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1570 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1573 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
1574 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1575 fprintf (stderr
, ">");
1579 fprintf (stderr
, "\n");
1583 fprintf (stderr
, " shadowed:");
1584 for (t
= lvl
->shadowed
; t
; t
= TREE_CHAIN (t
))
1586 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1588 fprintf (stderr
, "\n");
1590 if (lvl
->class_shadowed
)
1592 fprintf (stderr
, " class-shadowed:");
1593 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
1595 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1597 fprintf (stderr
, "\n");
1599 if (lvl
->type_shadowed
)
1601 fprintf (stderr
, " type-shadowed:");
1602 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1604 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1606 fprintf (stderr
, "\n");
1611 print_other_binding_stack (stack
)
1612 struct binding_level
*stack
;
1614 struct binding_level
*level
;
1615 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
1617 fprintf (stderr
, "binding level ");
1618 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
1619 fprintf (stderr
, "\n");
1620 print_binding_level (level
);
1625 print_binding_stack ()
1627 struct binding_level
*b
;
1628 fprintf (stderr
, "current_binding_level=");
1629 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
1630 fprintf (stderr
, "\nclass_binding_level=");
1631 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
1632 fprintf (stderr
, "\nglobal_binding_level=");
1633 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
1634 fprintf (stderr
, "\n");
1635 if (class_binding_level
)
1637 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
1638 if (b
== current_binding_level
)
1641 b
= class_binding_level
;
1643 b
= current_binding_level
;
1646 b
= current_binding_level
;
1647 print_other_binding_stack (b
);
1648 fprintf (stderr
, "global:\n");
1649 print_binding_level (global_binding_level
);
1652 /* Namespace binding access routines: The namespace_bindings field of
1653 the identifier is polymorphic, with three possible values:
1654 NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node
1655 indicating the BINDING_VALUE of global_namespace. */
1657 /* Check whether the a binding for the name to scope is known.
1658 Assumes that the bindings of the name are already a list
1659 of bindings. Returns the binding found, or NULL_TREE. */
1662 find_binding (name
, scope
)
1666 tree iter
, prev
= NULL_TREE
;
1668 scope
= ORIGINAL_NAMESPACE (scope
);
1670 for (iter
= IDENTIFIER_NAMESPACE_BINDINGS (name
); iter
;
1671 iter
= TREE_CHAIN (iter
))
1673 my_friendly_assert (TREE_CODE (iter
) == CPLUS_BINDING
, 374);
1674 if (BINDING_SCOPE (iter
) == scope
)
1676 /* Move binding found to the fron of the list, so
1677 subsequent lookups will find it faster. */
1680 TREE_CHAIN (prev
) = TREE_CHAIN (iter
);
1681 TREE_CHAIN (iter
) = IDENTIFIER_NAMESPACE_BINDINGS (name
);
1682 IDENTIFIER_NAMESPACE_BINDINGS (name
) = iter
;
1691 /* Always returns a binding for name in scope. If the
1692 namespace_bindings is not a list, convert it to one first.
1693 If no binding is found, make a new one. */
1696 binding_for_name (name
, scope
)
1700 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1703 scope
= ORIGINAL_NAMESPACE (scope
);
1705 if (b
&& TREE_CODE (b
) != CPLUS_BINDING
)
1707 /* Get rid of optimization for global scope. */
1708 IDENTIFIER_NAMESPACE_BINDINGS (name
) = NULL_TREE
;
1709 BINDING_VALUE (binding_for_name (name
, global_namespace
)) = b
;
1710 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1712 if (b
&& (result
= find_binding (name
, scope
)))
1714 /* Not found, make a new permanent one. */
1715 push_obstacks (&permanent_obstack
, &permanent_obstack
);
1716 result
= make_node (CPLUS_BINDING
);
1717 TREE_CHAIN (result
) = b
;
1718 IDENTIFIER_NAMESPACE_BINDINGS (name
) = result
;
1719 BINDING_SCOPE (result
) = scope
;
1720 BINDING_TYPE (result
) = NULL_TREE
;
1721 BINDING_VALUE (result
) = NULL_TREE
;
1726 /* Return the binding value for name in scope, considering that
1727 namespace_binding may or may not be a list of CPLUS_BINDINGS. */
1730 namespace_binding (name
, scope
)
1734 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1737 if (scope
== NULL_TREE
)
1738 scope
= global_namespace
;
1739 if (TREE_CODE (b
) != CPLUS_BINDING
)
1740 return (scope
== global_namespace
) ? b
: NULL_TREE
;
1741 name
= find_binding (name
,scope
);
1742 if (name
== NULL_TREE
)
1744 return BINDING_VALUE (name
);
1747 /* Set the binding value for name in scope. If modifying the binding
1748 of global_namespace is attempted, try to optimize it. */
1751 set_namespace_binding (name
, scope
, val
)
1758 if (scope
== NULL_TREE
)
1759 scope
= global_namespace
;
1761 if (scope
== global_namespace
)
1763 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1764 if (b
== NULL_TREE
|| TREE_CODE (b
) != CPLUS_BINDING
)
1766 IDENTIFIER_NAMESPACE_BINDINGS (name
) = val
;
1770 b
= binding_for_name (name
, scope
);
1771 BINDING_VALUE (b
) = val
;
1774 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1775 select a name that is unique to this compilation unit. */
1778 push_namespace (name
)
1783 int implicit_use
= 0;
1785 if (!global_namespace
)
1787 /* This must be ::. */
1788 my_friendly_assert (name
== get_identifier ("::"), 377);
1793 /* The name of anonymous namespace is unique for the translation
1795 if (!anonymous_namespace_name
)
1796 anonymous_namespace_name
= get_file_function_name ('N');
1797 name
= anonymous_namespace_name
;
1798 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1800 /* Reopening anonymous namespace. */
1804 else if (current_namespace
== global_namespace
1805 && name
== DECL_NAME (std_node
))
1812 /* Check whether this is an extended namespace definition. */
1813 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1814 if (d
!= NULL_TREE
&& TREE_CODE (d
) == NAMESPACE_DECL
)
1817 if (DECL_NAMESPACE_ALIAS (d
))
1819 cp_error ("namespace alias `%D' not allowed here, assuming `%D'",
1820 d
, DECL_NAMESPACE_ALIAS (d
));
1821 d
= DECL_NAMESPACE_ALIAS (d
);
1828 /* Make a new namespace, binding the name to it. */
1829 d
= build_lang_decl (NAMESPACE_DECL
, name
, void_type_node
);
1830 /* The global namespace is not pushed, and the global binding
1831 level is set elsewhere. */
1836 declare_namespace_level ();
1837 NAMESPACE_LEVEL (d
) = current_binding_level
;
1841 resume_binding_level (NAMESPACE_LEVEL (d
));
1844 do_using_directive (d
);
1845 /* Enter the name space. */
1846 current_namespace
= d
;
1849 /* Pop from the scope of the current namespace. */
1854 if (current_namespace
== global_namespace
)
1856 my_friendly_assert (in_std
>0, 980421);
1860 current_namespace
= CP_DECL_CONTEXT (current_namespace
);
1861 /* The binding level is not popped, as it might be re-opened later. */
1862 suspend_binding_level ();
1865 /* Concatenate the binding levels of all namespaces. */
1868 cat_namespace_levels()
1872 struct binding_level
*b
;
1874 last
= NAMESPACE_LEVEL (global_namespace
) -> names
;
1875 /* The nested namespaces appear in the names list of their ancestors. */
1876 for (current
= last
; current
; current
= TREE_CHAIN (current
))
1878 if (TREE_CODE (current
) != NAMESPACE_DECL
1879 || DECL_NAMESPACE_ALIAS (current
))
1881 if (!DECL_LANG_SPECIFIC (current
))
1884 my_friendly_assert (current
== std_node
, 393);
1887 b
= NAMESPACE_LEVEL (current
);
1888 while (TREE_CHAIN (last
))
1889 last
= TREE_CHAIN (last
);
1890 TREE_CHAIN (last
) = NAMESPACE_LEVEL (current
) -> names
;
1894 /* Subroutines for reverting temporarily to top-level for instantiation
1895 of templates and such. We actually need to clear out the class- and
1896 local-value slots of all identifiers, so that only the global values
1897 are at all visible. Simply setting current_binding_level to the global
1898 scope isn't enough, because more binding levels may be pushed. */
1899 struct saved_scope
{
1900 struct binding_level
*old_binding_level
;
1903 struct saved_scope
*prev
;
1904 tree class_name
, class_type
;
1905 tree access_specifier
;
1907 struct binding_level
*class_bindings
;
1908 tree
*lang_base
, *lang_stack
, lang_name
;
1910 int minimal_parse_mode
;
1911 tree last_function_parms
;
1912 tree template_parms
;
1913 HOST_WIDE_INT processing_template_decl
;
1914 tree previous_class_type
, previous_class_values
;
1915 int processing_specialization
;
1916 int processing_explicit_instantiation
;
1918 static struct saved_scope
*current_saved_scope
;
1920 /* A chain of the binding vecs created by store_bindings. We create a
1921 whole bunch of these during compilation, on permanent_obstack, so we
1922 can't just throw them away. */
1923 static tree free_binding_vecs
;
1926 store_bindings (names
, old_bindings
)
1927 tree names
, old_bindings
;
1930 for (t
= names
; t
; t
= TREE_CHAIN (t
))
1932 tree binding
, t1
, id
;
1934 if (TREE_CODE (t
) == TREE_LIST
)
1935 id
= TREE_PURPOSE (t
);
1940 || (!IDENTIFIER_LOCAL_VALUE (id
)
1941 && !IDENTIFIER_CLASS_VALUE (id
)))
1944 for (t1
= old_bindings
; t1
; t1
= TREE_CHAIN (t1
))
1945 if (TREE_VEC_ELT (t1
, 0) == id
)
1948 if (free_binding_vecs
)
1950 binding
= free_binding_vecs
;
1951 free_binding_vecs
= TREE_CHAIN (free_binding_vecs
);
1954 binding
= make_tree_vec (4);
1958 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
1959 TREE_VEC_ELT (binding
, 0) = id
;
1960 TREE_VEC_ELT (binding
, 1) = REAL_IDENTIFIER_TYPE_VALUE (id
);
1961 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_LOCAL_VALUE (id
);
1962 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
1963 IDENTIFIER_LOCAL_VALUE (id
) = NULL_TREE
;
1964 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
1966 TREE_CHAIN (binding
) = old_bindings
;
1967 old_bindings
= binding
;
1971 return old_bindings
;
1975 maybe_push_to_top_level (pseudo
)
1978 extern int current_lang_stacksize
;
1979 struct saved_scope
*s
1980 = (struct saved_scope
*) xmalloc (sizeof (struct saved_scope
));
1981 struct binding_level
*b
= inner_binding_level
;
1982 tree old_bindings
= NULL_TREE
;
1984 if (current_function_decl
)
1985 push_cp_function_context (NULL_TREE
);
1987 if (previous_class_type
)
1988 old_bindings
= store_bindings (previous_class_values
, old_bindings
);
1990 /* Have to include global_binding_level, because class-level decls
1991 aren't listed anywhere useful. */
1992 for (; b
; b
= b
->level_chain
)
1996 /* Template IDs are inserted into the global level. If they were
1997 inserted into namespace level, finish_file wouldn't find them
1998 when doing pending instantiations. Therefore, don't stop at
1999 namespace level, but continue until :: . */
2000 if (b
== global_binding_level
|| (pseudo
&& b
->pseudo_global
))
2003 old_bindings
= store_bindings (b
->names
, old_bindings
);
2004 /* We also need to check class_shadowed to save class-level type
2005 bindings, since pushclass doesn't fill in b->names. */
2006 if (b
->parm_flag
== 2)
2007 old_bindings
= store_bindings (b
->class_shadowed
, old_bindings
);
2009 /* Unwind type-value slots back to top level. */
2010 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
2011 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
2014 s
->old_binding_level
= current_binding_level
;
2015 current_binding_level
= b
;
2017 s
->old_namespace
= current_namespace
;
2018 s
->class_name
= current_class_name
;
2019 s
->class_type
= current_class_type
;
2020 s
->access_specifier
= current_access_specifier
;
2021 s
->function_decl
= current_function_decl
;
2022 s
->class_bindings
= class_binding_level
;
2023 s
->lang_stack
= current_lang_stack
;
2024 s
->lang_base
= current_lang_base
;
2025 s
->lang_stacksize
= current_lang_stacksize
;
2026 s
->lang_name
= current_lang_name
;
2027 s
->minimal_parse_mode
= minimal_parse_mode
;
2028 s
->last_function_parms
= last_function_parms
;
2029 s
->template_parms
= current_template_parms
;
2030 s
->processing_template_decl
= processing_template_decl
;
2031 s
->previous_class_type
= previous_class_type
;
2032 s
->previous_class_values
= previous_class_values
;
2033 s
->processing_specialization
= processing_specialization
;
2034 s
->processing_explicit_instantiation
= processing_explicit_instantiation
;
2036 current_class_name
= current_class_type
= NULL_TREE
;
2037 current_function_decl
= NULL_TREE
;
2038 class_binding_level
= (struct binding_level
*)0;
2039 current_lang_stacksize
= 10;
2040 current_lang_stack
= current_lang_base
2041 = (tree
*) xmalloc (current_lang_stacksize
* sizeof (tree
));
2042 current_lang_name
= lang_name_cplusplus
;
2043 strict_prototype
= strict_prototypes_lang_cplusplus
;
2044 named_labels
= NULL_TREE
;
2045 shadowed_labels
= NULL_TREE
;
2046 minimal_parse_mode
= 0;
2047 previous_class_type
= previous_class_values
= NULL_TREE
;
2048 processing_specialization
= 0;
2049 processing_explicit_instantiation
= 0;
2050 current_template_parms
= NULL_TREE
;
2051 processing_template_decl
= 0;
2052 current_namespace
= global_namespace
;
2054 s
->prev
= current_saved_scope
;
2055 s
->old_bindings
= old_bindings
;
2056 current_saved_scope
= s
;
2058 push_obstacks (&permanent_obstack
, &permanent_obstack
);
2062 push_to_top_level ()
2064 maybe_push_to_top_level (0);
2068 pop_from_top_level ()
2070 extern int current_lang_stacksize
;
2071 struct saved_scope
*s
= current_saved_scope
;
2074 /* Clear out class-level bindings cache. */
2075 if (previous_class_type
)
2078 previous_class_type
= NULL_TREE
;
2083 current_binding_level
= s
->old_binding_level
;
2084 current_saved_scope
= s
->prev
;
2085 for (t
= s
->old_bindings
; t
; )
2088 tree id
= TREE_VEC_ELT (t
, 0);
2091 SET_IDENTIFIER_TYPE_VALUE (id
, TREE_VEC_ELT (t
, 1));
2092 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VEC_ELT (t
, 2);
2093 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
2096 TREE_CHAIN (save
) = free_binding_vecs
;
2097 free_binding_vecs
= save
;
2099 current_namespace
= s
->old_namespace
;
2100 current_class_name
= s
->class_name
;
2101 current_class_type
= s
->class_type
;
2102 current_access_specifier
= s
->access_specifier
;
2103 current_function_decl
= s
->function_decl
;
2104 class_binding_level
= s
->class_bindings
;
2105 free (current_lang_base
);
2106 current_lang_base
= s
->lang_base
;
2107 current_lang_stack
= s
->lang_stack
;
2108 current_lang_name
= s
->lang_name
;
2109 current_lang_stacksize
= s
->lang_stacksize
;
2110 if (current_lang_name
== lang_name_cplusplus
)
2111 strict_prototype
= strict_prototypes_lang_cplusplus
;
2112 else if (current_lang_name
== lang_name_c
)
2113 strict_prototype
= strict_prototypes_lang_c
;
2114 minimal_parse_mode
= s
->minimal_parse_mode
;
2115 last_function_parms
= s
->last_function_parms
;
2116 current_template_parms
= s
->template_parms
;
2117 processing_template_decl
= s
->processing_template_decl
;
2118 previous_class_type
= s
->previous_class_type
;
2119 previous_class_values
= s
->previous_class_values
;
2120 processing_specialization
= s
->processing_specialization
;
2121 processing_explicit_instantiation
= s
->processing_explicit_instantiation
;
2125 if (current_function_decl
)
2126 pop_cp_function_context (NULL_TREE
);
2129 /* Push a definition of struct, union or enum tag "name".
2130 into binding_level "b". "type" should be the type node,
2131 We assume that the tag "name" is not already defined.
2133 Note that the definition may really be just a forward reference.
2134 In that case, the TYPE_SIZE will be a NULL_TREE.
2136 C++ gratuitously puts all these tags in the name space. */
2138 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2139 record the shadowed value for this binding contour. TYPE is
2140 the type that ID maps to. */
2143 set_identifier_type_value_with_scope (id
, type
, b
)
2146 struct binding_level
*b
;
2148 if (!b
->namespace_p
)
2150 /* Shadow the marker, not the real thing, so that the marker
2151 gets restored later. */
2152 tree old_type_value
= REAL_IDENTIFIER_TYPE_VALUE (id
);
2154 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
2158 tree binding
= binding_for_name (id
, current_namespace
);
2159 BINDING_TYPE (binding
) = type
;
2160 /* Store marker instead of real type. */
2161 type
= global_type_node
;
2163 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
2166 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2169 set_identifier_type_value (id
, type
)
2173 set_identifier_type_value_with_scope (id
, type
, inner_binding_level
);
2177 set_identifier_local_value_with_scope (id
, val
, b
)
2179 struct binding_level
*b
;
2182 my_friendly_assert (! b
->namespace_p
, 980716);
2184 oldlocal
= IDENTIFIER_LOCAL_VALUE (id
);
2185 b
->shadowed
= tree_cons (id
, oldlocal
, b
->shadowed
);
2186 IDENTIFIER_LOCAL_VALUE (id
) = val
;
2190 set_identifier_local_value (id
, val
)
2193 set_identifier_local_value_with_scope (id
, val
, current_binding_level
);
2196 /* Return the type associated with id. */
2199 identifier_type_value (id
)
2202 /* There is no type with that name, anywhere. */
2203 if (REAL_IDENTIFIER_TYPE_VALUE (id
) == NULL_TREE
)
2205 /* This is not the type marker, but the real thing. */
2206 if (REAL_IDENTIFIER_TYPE_VALUE (id
) != global_type_node
)
2207 return REAL_IDENTIFIER_TYPE_VALUE (id
);
2208 /* Have to search for it. It must be on the global level, now.
2209 Ask lookup_name not to return non-types. */
2210 id
= lookup_name_real (id
, 2, 1, 0);
2212 return TREE_TYPE (id
);
2216 /* Pop off extraneous binding levels left over due to syntax errors.
2218 We don't pop past namespaces, as they might be valid. */
2223 #ifdef DEBUG_CP_BINDING_LEVELS
2224 fprintf (stderr
, "XXX entering pop_everything ()\n");
2226 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2228 if (class_binding_level
)
2229 pop_nested_class (1);
2233 #ifdef DEBUG_CP_BINDING_LEVELS
2234 fprintf (stderr
, "XXX leaving pop_everything ()\n");
2238 /* The type TYPE is being declared. If it is a class template, or a
2239 specialization of a class template, do any processing required and
2240 perform error-checking. If IS_FRIEND is non-zero, this TYPE is
2241 being declared a friend. B is the binding level at which this TYPE
2244 Returns the TYPE_DECL for TYPE, which may have been altered by this
2248 maybe_process_template_type_declaration (type
, globalize
, b
)
2251 struct binding_level
* b
;
2253 tree decl
= TYPE_NAME (type
);
2255 if (processing_template_parmlist
)
2256 /* You can't declare a new template type in a template parameter
2257 list. But, you can declare a non-template type:
2259 template <class A*> struct S;
2261 is a forward-declaration of `A'. */
2265 maybe_check_template_type (type
);
2267 my_friendly_assert (IS_AGGR_TYPE (type
)
2268 || TREE_CODE (type
) == ENUMERAL_TYPE
, 0);
2271 if (/* If !GLOBALIZE then we are looking at a definition.
2272 It may not be a primary template. (For example, in:
2275 struct S1 { class S2 {}; }
2277 we have to push_template_decl for S2.) */
2278 (processing_template_decl
&& !globalize
)
2279 /* If we are declaring a friend template class, we will
2280 have GLOBALIZE set, since something like:
2288 declares S2 to be at global scope. */
2289 || PROCESSING_REAL_TEMPLATE_DECL_P ())
2291 /* This may change after the call to
2292 push_template_decl_real, but we want the original value. */
2293 tree name
= DECL_NAME (decl
);
2295 decl
= push_template_decl_real (decl
, globalize
);
2296 /* If the current binding level is the binding level for the
2297 template parameters (see the comment in
2298 begin_template_parm_list) and the enclosing level is a class
2299 scope, and we're not looking at a friend, push the
2300 declaration of the member class into the class scope. In the
2301 friend case, push_template_decl will already have put the
2302 friend into global scope, if appropriate. */
2303 if (TREE_CODE (type
) != ENUMERAL_TYPE
2304 && !globalize
&& b
->pseudo_global
2305 && b
->level_chain
->parm_flag
== 2)
2307 pushdecl_with_scope (CLASSTYPE_TI_TEMPLATE (type
),
2309 finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type
));
2310 /* Put this tag on the list of tags for the class, since
2311 that won't happen below because B is not the class
2312 binding level, but is instead the pseudo-global level. */
2313 b
->level_chain
->tags
=
2314 saveable_tree_cons (name
, type
, b
->level_chain
->tags
);
2315 TREE_NONLOCAL_FLAG (type
) = 1;
2316 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2317 CLASSTYPE_TAGS (current_class_type
) = b
->level_chain
->tags
;
2325 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2326 Normally put it into the inner-most non-tag-transparent scope,
2327 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2328 The latter is needed for implicit declarations. */
2331 pushtag (name
, type
, globalize
)
2335 register struct binding_level
*b
;
2339 b
= inner_binding_level
;
2340 while (b
->tag_transparent
2341 || (globalize
&& b
->parm_flag
== 2))
2344 if (toplevel_bindings_p ())
2345 b
->tags
= perm_tree_cons (name
, type
, b
->tags
);
2347 b
->tags
= saveable_tree_cons (name
, type
, b
->tags
);
2351 context
= type
? TYPE_CONTEXT (type
) : NULL_TREE
;
2354 tree cs
= current_scope ();
2358 else if (cs
!= NULL_TREE
2359 && TREE_CODE_CLASS (TREE_CODE (cs
)) == 't')
2360 /* When declaring a friend class of a local class, we want
2361 to inject the newly named class into the scope
2362 containing the local class, not the namespace scope. */
2363 context
= hack_decl_function_context (get_type_decl (cs
));
2366 c_decl
= TREE_CODE (context
) == FUNCTION_DECL
2367 ? context
: TYPE_MAIN_DECL (context
);
2370 context
= current_namespace
;
2372 /* Do C++ gratuitous typedefing. */
2373 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2375 register tree d
= NULL_TREE
;
2376 int newdecl
= 0, in_class
= 0;
2378 if ((b
->pseudo_global
&& b
->level_chain
->parm_flag
== 2)
2379 || b
->parm_flag
== 2)
2382 d
= lookup_nested_type (type
, c_decl
);
2387 d
= build_decl (TYPE_DECL
, name
, type
);
2388 if (current_lang_name
== lang_name_java
)
2389 TYPE_FOR_JAVA (type
) = 1;
2390 SET_DECL_ARTIFICIAL (d
);
2392 set_identifier_type_value_with_scope (name
, type
, b
);
2395 d
= TYPE_MAIN_DECL (d
);
2397 TYPE_NAME (type
) = d
;
2398 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
2400 d
= maybe_process_template_type_declaration (type
,
2403 if (b
->parm_flag
== 2)
2405 pushdecl_class_level (d
);
2406 if (newdecl
&& !PROCESSING_REAL_TEMPLATE_DECL_P ())
2407 /* Put this TYPE_DECL on the TYPE_FIELDS list for the
2408 class. But if it's a member template class, we
2409 want the TEMPLATE_DECL, not the TYPE_DECL, so this
2411 finish_member_declaration (d
);
2414 d
= pushdecl_with_scope (d
, b
);
2418 if (ANON_AGGRNAME_P (name
))
2419 DECL_IGNORED_P (d
) = 1;
2421 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2422 DECL_ASSEMBLER_NAME (d
) = DECL_NAME (d
);
2423 if (!uses_template_parms (type
))
2424 DECL_ASSEMBLER_NAME (d
)
2425 = get_identifier (build_overload_name (type
, 1, 1));
2428 if (b
->parm_flag
== 2)
2430 TREE_NONLOCAL_FLAG (type
) = 1;
2431 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2432 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2436 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2437 /* Use the canonical TYPE_DECL for this node. */
2438 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2441 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2442 will be the tagged type we just added to the current
2443 binding level. This fake NULL-named TYPE_DECL node helps
2444 dwarfout.c to know when it needs to output a
2445 representation of a tagged type, and it also gives us a
2446 convenient place to record the "scope start" address for
2449 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2450 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2454 /* Counter used to create anonymous type names. */
2456 static int anon_cnt
= 0;
2458 /* Return an IDENTIFIER which can be used as a name for
2459 anonymous structs and unions. */
2466 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2467 return get_identifier (buf
);
2470 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2471 This keeps dbxout from getting confused. */
2476 register struct binding_level
*b
;
2478 static int last_cnt
= 0;
2480 /* Fast out if no new anon names were declared. */
2481 if (last_cnt
== anon_cnt
)
2484 b
= current_binding_level
;
2485 while (b
->tag_transparent
)
2490 /* A NULL purpose means we have already processed all tags
2491 from here to the end of the list. */
2492 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2494 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2495 TREE_PURPOSE (tags
) = NULL_TREE
;
2496 tags
= TREE_CHAIN (tags
);
2498 last_cnt
= anon_cnt
;
2501 /* Subroutine of duplicate_decls: return truthvalue of whether
2502 or not types of these decls match.
2504 For C++, we must compare the parameter list so that `int' can match
2505 `int&' in a parameter position, but `int&' is not confused with
2509 decls_match (newdecl
, olddecl
)
2510 tree newdecl
, olddecl
;
2514 if (TREE_CODE (newdecl
) == FUNCTION_DECL
2515 && TREE_CODE (olddecl
) == FUNCTION_DECL
)
2517 tree f1
= TREE_TYPE (newdecl
);
2518 tree f2
= TREE_TYPE (olddecl
);
2519 tree p1
= TYPE_ARG_TYPES (f1
);
2520 tree p2
= TYPE_ARG_TYPES (f2
);
2522 if (DECL_REAL_CONTEXT (newdecl
) != DECL_REAL_CONTEXT (olddecl
)
2523 && ! (DECL_LANGUAGE (newdecl
) == lang_c
2524 && DECL_LANGUAGE (olddecl
) == lang_c
))
2527 /* When we parse a static member function definition,
2528 we put together a FUNCTION_DECL which thinks its type
2529 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2531 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2532 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2533 else if (TREE_CODE (f2
) == METHOD_TYPE
2534 && DECL_STATIC_FUNCTION_P (newdecl
))
2535 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2537 /* Here we must take care of the case where new default
2538 parameters are specified. Also, warn if an old
2539 declaration becomes ambiguous because default
2540 parameters may cause the two to be ambiguous. */
2541 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2543 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2544 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2546 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2550 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2552 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2555 types_match
= self_promoting_args_p (p1
);
2556 if (p1
== void_list_node
)
2557 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2559 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2560 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2562 types_match
= self_promoting_args_p (p2
);
2563 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2566 types_match
= compparms (p1
, p2
, 3);
2571 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
2572 && TREE_CODE (olddecl
) == TEMPLATE_DECL
)
2574 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2575 DECL_TEMPLATE_PARMS (olddecl
)))
2578 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2581 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2582 DECL_TEMPLATE_RESULT (newdecl
));
2586 if (TREE_TYPE (newdecl
) == error_mark_node
)
2587 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2588 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2589 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2590 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2593 types_match
= comptypes (TREE_TYPE (newdecl
),
2594 TREE_TYPE (olddecl
), 1);
2600 /* If NEWDECL is `static' and an `extern' was seen previously,
2601 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2602 information about previous usage as an `extern'.)
2604 Note that this does not apply to the C++ case of declaring
2605 a variable `extern const' and then later `const'.
2607 Don't complain about built-in functions, since they are beyond
2608 the user's control. */
2611 warn_extern_redeclared_static (newdecl
, olddecl
)
2612 tree newdecl
, olddecl
;
2616 static char *explicit_extern_static_warning
2617 = "`%D' was declared `extern' and later `static'";
2618 static char *implicit_extern_static_warning
2619 = "`%D' was declared implicitly `extern' and later `static'";
2621 if (TREE_CODE (newdecl
) == TYPE_DECL
)
2624 name
= DECL_ASSEMBLER_NAME (newdecl
);
2625 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2627 /* It's okay to redeclare an ANSI built-in function as static,
2628 or to declare a non-ANSI built-in function as anything. */
2629 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2630 && olddecl
!= NULL_TREE
2631 && TREE_CODE (olddecl
) == FUNCTION_DECL
2632 && (DECL_BUILT_IN (olddecl
)
2633 || DECL_BUILT_IN_NONANSI (olddecl
))))
2635 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2636 ? implicit_extern_static_warning
2637 : explicit_extern_static_warning
, newdecl
);
2638 if (olddecl
!= NULL_TREE
)
2639 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2644 /* Handle when a new declaration NEWDECL has the same name as an old
2645 one OLDDECL in the same binding contour. Prints an error message
2648 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2649 Otherwise, return 0. */
2652 duplicate_decls (newdecl
, olddecl
)
2653 tree newdecl
, olddecl
;
2655 extern struct obstack permanent_obstack
;
2656 unsigned olddecl_uid
= DECL_UID (olddecl
);
2657 int olddecl_friend
= 0, types_match
= 0;
2658 int new_defines_function
= 0;
2660 if (newdecl
== olddecl
)
2663 types_match
= decls_match (newdecl
, olddecl
);
2665 /* If either the type of the new decl or the type of the old decl is an
2666 error_mark_node, then that implies that we have already issued an
2667 error (earlier) for some bogus type specification, and in that case,
2668 it is rather pointless to harass the user with yet more error message
2669 about the same declaration, so just pretend the types match here. */
2670 if (TREE_TYPE (newdecl
) == error_mark_node
2671 || TREE_TYPE (olddecl
) == error_mark_node
)
2674 /* Check for redeclaration and other discrepancies. */
2675 if (TREE_CODE (olddecl
) == FUNCTION_DECL
2676 && DECL_ARTIFICIAL (olddecl
)
2677 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2679 /* If you declare a built-in or predefined function name as static,
2680 the old definition is overridden, but optionally warn this was a
2681 bad choice of name. Ditto for overloads. */
2682 if (! TREE_PUBLIC (newdecl
)
2683 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2684 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2687 cp_warning ("shadowing %s function `%#D'",
2688 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2690 /* Discard the old built-in function. */
2693 else if (! types_match
)
2695 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2697 /* If the built-in is not ansi, then programs can override
2698 it even globally without an error. */
2699 if (! DECL_BUILT_IN (olddecl
))
2700 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2704 cp_error ("declaration of `%#D'", newdecl
);
2705 cp_error ("conflicts with built-in declaration `%#D'",
2711 cp_warning ("declaration of `%#D'", newdecl
);
2712 cp_warning ("conflicts with built-in declaration `%#D'",
2716 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2718 if ((TREE_CODE (olddecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (olddecl
)
2719 && TREE_CODE (newdecl
) != TYPE_DECL
2720 && ! (TREE_CODE (newdecl
) == TEMPLATE_DECL
2721 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
))
2722 || (TREE_CODE (newdecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (newdecl
)
2723 && TREE_CODE (olddecl
) != TYPE_DECL
2724 && ! (TREE_CODE (olddecl
) == TEMPLATE_DECL
2725 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
))
2728 /* We do nothing special here, because C++ does such nasty
2729 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2730 get shadowed, and know that if we need to find a TYPE_DECL
2731 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2732 slot of the identifier. */
2736 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2737 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
2738 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2739 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
2742 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2743 if (TREE_CODE (olddecl
) == TREE_LIST
)
2744 olddecl
= TREE_VALUE (olddecl
);
2745 cp_error_at ("previous declaration of `%#D'", olddecl
);
2747 /* New decl is completely inconsistent with the old one =>
2748 tell caller to replace the old one. */
2752 else if (!types_match
)
2754 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2756 /* The name of a class template may not be declared to refer to
2757 any other template, class, function, object, namespace, value,
2758 or type in the same scope. */
2759 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
2760 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2762 cp_error ("declaration of template `%#D'", newdecl
);
2763 cp_error_at ("conflicts with previous declaration `%#D'",
2766 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
2767 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
2768 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
2769 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))), 3)
2770 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2771 DECL_TEMPLATE_PARMS (olddecl
)))
2773 cp_error ("new declaration `%#D'", newdecl
);
2774 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2778 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2780 if (DECL_LANGUAGE (newdecl
) == lang_c
2781 && DECL_LANGUAGE (olddecl
) == lang_c
)
2783 cp_error ("declaration of C function `%#D' conflicts with",
2785 cp_error_at ("previous declaration `%#D' here", olddecl
);
2787 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2788 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2790 cp_error ("new declaration `%#D'", newdecl
);
2791 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2797 /* Already complained about this, so don't do so again. */
2798 else if (current_class_type
== NULL_TREE
2799 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2801 cp_error ("conflicting types for `%#D'", newdecl
);
2802 cp_error_at ("previous declaration as `%#D'", olddecl
);
2805 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2806 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2807 && (!DECL_TEMPLATE_INFO (newdecl
)
2808 || (DECL_TI_TEMPLATE (newdecl
)
2809 != DECL_TI_TEMPLATE (olddecl
))))
2810 || (DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2811 && (!DECL_TEMPLATE_INFO (olddecl
)
2812 || (DECL_TI_TEMPLATE (olddecl
)
2813 != DECL_TI_TEMPLATE (newdecl
))))))
2814 /* It's OK to have a template specialization and a non-template
2815 with the same type, or to have specializations of two
2816 different templates with the same type. Note that if one is a
2817 specialization, and the other is an instantiation of the same
2818 template, that we do not exit at this point. That situation
2819 can occur if we instantiate a template class, and then
2820 specialize one of its methods. This situation is legal, but
2821 the declarations must be merged in the usual way. */
2823 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2824 && ((DECL_TEMPLATE_INSTANTIATION (olddecl
)
2825 && !DECL_USE_TEMPLATE (newdecl
))
2826 || (DECL_TEMPLATE_INSTANTIATION (newdecl
)
2827 && !DECL_USE_TEMPLATE (olddecl
))))
2828 /* One of the declarations is a template instantiation, and the
2829 other is not a template at all. That's OK. */
2831 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
2832 && DECL_NAMESPACE_ALIAS (newdecl
)
2833 && DECL_NAMESPACE_ALIAS (newdecl
) == DECL_NAMESPACE_ALIAS (olddecl
))
2834 /* Redeclaration of namespace alias, ignore it. */
2838 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2841 cp_error (errmsg
, newdecl
);
2842 if (DECL_NAME (olddecl
) != NULL_TREE
)
2843 cp_error_at ((DECL_INITIAL (olddecl
)
2844 && namespace_bindings_p ())
2845 ? "`%#D' previously defined here"
2846 : "`%#D' previously declared here", olddecl
);
2848 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2849 && DECL_INITIAL (olddecl
) != NULL_TREE
2850 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2851 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2853 /* Prototype decl follows defn w/o prototype. */
2854 cp_warning_at ("prototype for `%#D'", newdecl
);
2855 cp_warning_at ("follows non-prototype definition here", olddecl
);
2857 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2858 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2860 /* extern "C" int foo ();
2861 int foo () { bar (); }
2863 if (current_lang_stack
== current_lang_base
)
2864 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2867 cp_error_at ("previous declaration of `%#D' with %L linkage",
2868 olddecl
, DECL_LANGUAGE (olddecl
));
2869 cp_error ("conflicts with new declaration with %L linkage",
2870 DECL_LANGUAGE (newdecl
));
2874 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
2876 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2878 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2879 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2882 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2883 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2885 for (; t1
&& t1
!= void_list_node
;
2886 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2887 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2889 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2894 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2896 cp_pedwarn_at ("after previous specification in `%#D'",
2902 cp_error ("default argument given for parameter %d of `%#D'",
2904 cp_error_at ("after previous specification in `%#D'",
2909 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2910 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
2912 cp_warning ("`%#D' was used before it was declared inline",
2914 cp_warning_at ("previous non-inline declaration here",
2920 /* If new decl is `static' and an `extern' was seen previously,
2922 warn_extern_redeclared_static (newdecl
, olddecl
);
2924 /* We have committed to returning 1 at this point. */
2925 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2927 /* Now that functions must hold information normally held
2928 by field decls, there is extra work to do so that
2929 declaration information does not get destroyed during
2931 if (DECL_VINDEX (olddecl
))
2932 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2933 if (DECL_CONTEXT (olddecl
))
2934 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2935 if (DECL_CLASS_CONTEXT (olddecl
))
2936 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2937 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2938 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2939 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2940 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2941 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2942 DECL_VIRTUAL_P (newdecl
) |= DECL_VIRTUAL_P (olddecl
);
2943 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl
) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl
);
2944 new_defines_function
= DECL_INITIAL (newdecl
) != NULL_TREE
;
2946 /* Optionally warn about more than one declaration for the same
2947 name, but don't warn about a function declaration followed by a
2949 if (warn_redundant_decls
&& ! DECL_ARTIFICIAL (olddecl
)
2950 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2951 /* Don't warn about extern decl followed by definition. */
2952 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
))
2953 /* Don't warn about friends, let add_friend take care of it. */
2954 && ! DECL_FRIEND_P (newdecl
))
2956 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2957 cp_warning_at ("previous declaration of `%D'", olddecl
);
2961 /* Deal with C++: must preserve virtual function table size. */
2962 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2964 register tree newtype
= TREE_TYPE (newdecl
);
2965 register tree oldtype
= TREE_TYPE (olddecl
);
2967 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2968 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2970 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2971 CLASSTYPE_FRIEND_CLASSES (newtype
)
2972 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2976 /* Copy all the DECL_... slots specified in the new decl
2977 except for any that we copy here from the old type. */
2978 DECL_MACHINE_ATTRIBUTES (newdecl
)
2979 = merge_machine_decl_attributes (olddecl
, newdecl
);
2981 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2983 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl
),
2984 DECL_TEMPLATE_RESULT (olddecl
)))
2985 cp_error ("invalid redeclaration of %D", newdecl
);
2986 TREE_TYPE (olddecl
) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
));
2987 DECL_TEMPLATE_PARMS (olddecl
) = DECL_TEMPLATE_PARMS (newdecl
);
2988 if (DECL_TEMPLATE_INFO (newdecl
))
2989 DECL_TEMPLATE_INFO (olddecl
) = DECL_TEMPLATE_INFO (newdecl
);
2990 DECL_TEMPLATE_SPECIALIZATIONS (olddecl
)
2991 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl
),
2992 DECL_TEMPLATE_SPECIALIZATIONS (newdecl
));
2999 /* Automatically handles default parameters. */
3000 tree oldtype
= TREE_TYPE (olddecl
);
3003 /* Make sure we put the new type in the same obstack as the old one. */
3005 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
3008 push_obstacks_nochange ();
3009 end_temporary_allocation ();
3012 /* Merge the data types specified in the two decls. */
3013 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
3015 if (TREE_CODE (newdecl
) == VAR_DECL
)
3016 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
3017 /* Do this after calling `common_type' so that default
3018 parameters don't confuse us. */
3019 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3020 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
3021 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
3023 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
3024 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
3025 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
3026 TYPE_RAISES_EXCEPTIONS (oldtype
));
3028 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
3029 && DECL_SOURCE_LINE (olddecl
) != 0
3031 && ! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
3033 cp_pedwarn ("declaration of `%D' throws different exceptions",
3035 cp_pedwarn_at ("previous declaration here", olddecl
);
3038 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
3040 /* Lay the type out, unless already done. */
3041 if (newtype
!= canonical_type_variant (oldtype
)
3042 && TREE_TYPE (newdecl
) != error_mark_node
3043 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3044 layout_type (TREE_TYPE (newdecl
));
3046 if ((TREE_CODE (newdecl
) == VAR_DECL
3047 || TREE_CODE (newdecl
) == PARM_DECL
3048 || TREE_CODE (newdecl
) == RESULT_DECL
3049 || TREE_CODE (newdecl
) == FIELD_DECL
3050 || TREE_CODE (newdecl
) == TYPE_DECL
)
3051 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3052 layout_decl (newdecl
, 0);
3054 /* Merge the type qualifiers. */
3055 if (TREE_READONLY (newdecl
))
3056 TREE_READONLY (olddecl
) = 1;
3057 if (TREE_THIS_VOLATILE (newdecl
))
3058 TREE_THIS_VOLATILE (olddecl
) = 1;
3060 /* Merge the initialization information. */
3061 if (DECL_INITIAL (newdecl
) == NULL_TREE
3062 && DECL_INITIAL (olddecl
) != NULL_TREE
)
3064 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3065 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
3066 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
3067 if (DECL_LANG_SPECIFIC (newdecl
)
3068 && DECL_LANG_SPECIFIC (olddecl
))
3069 DECL_SAVED_TREE (newdecl
) = DECL_SAVED_TREE (olddecl
);
3072 /* Merge the section attribute.
3073 We want to issue an error if the sections conflict but that must be
3074 done later in decl_attributes since we are called before attributes
3076 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
3077 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
3079 /* Keep the old rtl since we can safely use it, unless it's the
3080 call to abort() used for abstract virtuals. */
3081 if ((DECL_LANG_SPECIFIC (olddecl
)
3082 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3083 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
3084 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3088 /* If cannot merge, then use the new type and qualifiers,
3089 and don't preserve the old rtl. */
3092 /* Clean out any memory we had of the old declaration. */
3093 tree oldstatic
= value_member (olddecl
, static_aggregates
);
3095 TREE_VALUE (oldstatic
) = error_mark_node
;
3097 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
3098 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
3099 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
3100 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
3103 /* Merge the storage class information. */
3104 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
3105 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
3106 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
3107 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
3108 if (! DECL_EXTERNAL (olddecl
))
3109 DECL_EXTERNAL (newdecl
) = 0;
3111 if (DECL_LANG_SPECIFIC (newdecl
) && DECL_LANG_SPECIFIC (olddecl
))
3113 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
3114 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
3115 DECL_COMDAT (newdecl
) |= DECL_COMDAT (olddecl
);
3116 /* Don't really know how much of the language-specific
3117 values we should copy from old to new. */
3118 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
3119 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
3120 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
3121 if (DECL_TEMPLATE_INFO (newdecl
) == NULL_TREE
)
3123 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
3124 DECL_USE_TEMPLATE (newdecl
) = DECL_USE_TEMPLATE (olddecl
);
3126 olddecl_friend
= DECL_FRIEND_P (olddecl
);
3129 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3131 if (DECL_TEMPLATE_INSTANTIATION (olddecl
)
3132 && !DECL_TEMPLATE_INSTANTIATION (newdecl
))
3134 /* If newdecl is not a specialization, then it is not a
3135 template-related function at all. And that means that we
3136 shoud have exited above, returning 0. */
3137 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl
),
3140 if (TREE_USED (olddecl
))
3141 /* From [temp.expl.spec]:
3143 If a template, a member template or the member of a class
3144 template is explicitly specialized then that
3145 specialization shall be declared before the first use of
3146 that specialization that would cause an implicit
3147 instantiation to take place, in every translation unit in
3148 which such a use occurs. */
3149 cp_error ("explicit specialization of %D after first use",
3152 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl
);
3154 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
3156 /* If either decl says `inline', this fn is inline, unless its
3157 definition was passed already. */
3158 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
3159 DECL_INLINE (olddecl
) = 1;
3160 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
3164 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
3165 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
3166 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
3168 if (! types_match
|| new_defines_function
)
3170 /* These need to be copied so that the names are available. */
3171 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
3172 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
3174 if (new_defines_function
)
3175 /* If defining a function declared with other language
3176 linkage, use the previously declared language linkage. */
3177 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
3180 /* If redeclaring a builtin function, and not a definition,
3181 it stays built in. */
3182 if (DECL_BUILT_IN (olddecl
))
3184 DECL_BUILT_IN (newdecl
) = 1;
3185 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
3186 /* If we're keeping the built-in definition, keep the rtl,
3187 regardless of declaration matches. */
3188 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3191 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
3193 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
3194 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
3195 /* Previously saved insns go together with
3196 the function's previous definition. */
3197 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3198 /* Don't clear out the arguments if we're redefining a function. */
3199 if (DECL_ARGUMENTS (olddecl
))
3200 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
3202 if (DECL_LANG_SPECIFIC (olddecl
))
3203 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
3206 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
3208 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
3211 /* Now preserve various other info from the definition. */
3212 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
3213 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
3214 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
3215 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
3217 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3220 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
3221 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
3223 function_size
= sizeof (struct tree_decl
);
3225 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3226 (char *) olddecl
+ sizeof (struct tree_common
),
3227 function_size
- sizeof (struct tree_common
));
3229 /* Can we safely free the storage used by newdecl? */
3231 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3232 & ~ obstack_alignment_mask (&permanent_obstack))
3234 if (DECL_TEMPLATE_INSTANTIATION (newdecl
))
3236 /* If newdecl is a template instantiation, it is possible that
3237 the following sequence of events has occurred:
3239 o A friend function was declared in a class template. The
3240 class template was instantiated.
3242 o The instantiation of the friend declaration was
3243 recorded on the instantiation list, and is newdecl.
3245 o Later, however, instantiate_class_template called pushdecl
3246 on the newdecl to perform name injection. But, pushdecl in
3247 turn called duplicate_decls when it discovered that another
3248 declaration of a global function with the same name already
3251 o Here, in duplicate_decls, we decided to clobber newdecl.
3253 If we're going to do that, we'd better make sure that
3254 olddecl, and not newdecl, is on the list of
3255 instantiations so that if we try to do the instantiation
3256 again we won't get the clobbered declaration. */
3258 tree tmpl
= DECL_TI_TEMPLATE (newdecl
);
3259 tree decls
= DECL_TEMPLATE_SPECIALIZATIONS (tmpl
);
3261 for (; decls
; decls
= TREE_CHAIN (decls
))
3262 if (TREE_VALUE (decls
) == newdecl
)
3263 TREE_VALUE (decls
) = olddecl
;
3266 if (((char *)newdecl
+ ROUND (function_size
) == (char *)nl
3267 && ((char *)newdecl
+ ROUND (function_size
)
3268 + ROUND (sizeof (struct lang_decl
))
3269 == obstack_next_free (&permanent_obstack
)))
3270 || ((char *)newdecl
+ ROUND (function_size
)
3271 == obstack_next_free (&permanent_obstack
)))
3273 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
3274 DECL_LANG_SPECIFIC (olddecl
) = ol
;
3275 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
3277 obstack_free (&permanent_obstack
, newdecl
);
3279 else if (LANG_DECL_PERMANENT (ol
) && ol
!= nl
)
3281 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
3283 /* Save these lang_decls that would otherwise be lost. */
3284 extern tree free_lang_decl_chain
;
3285 tree free_lang_decl
= (tree
) ol
;
3287 if (DECL_LANG_SPECIFIC (olddecl
) == ol
)
3290 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
3291 free_lang_decl_chain
= free_lang_decl
;
3295 /* Storage leak. */;
3301 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3302 (char *) olddecl
+ sizeof (struct tree_common
),
3303 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3304 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3307 DECL_UID (olddecl
) = olddecl_uid
;
3309 DECL_FRIEND_P (olddecl
) = 1;
3311 /* NEWDECL contains the merged attribute lists.
3312 Update OLDDECL to be the same. */
3313 DECL_MACHINE_ATTRIBUTES (olddecl
) = DECL_MACHINE_ATTRIBUTES (newdecl
);
3318 /* Record a decl-node X as belonging to the current lexical scope.
3319 Check for errors (such as an incompatible declaration for the same
3320 name already seen in the same scope).
3322 Returns either X or an old decl for the same name.
3323 If an old decl is returned, it may have been smashed
3324 to agree with what X says. */
3331 register tree name
= DECL_ASSEMBLER_NAME (x
);
3332 register struct binding_level
*b
= current_binding_level
;
3334 if (current_function_decl
&& x
!= current_function_decl
3335 /* A local declaration for a function doesn't constitute nesting. */
3336 && (TREE_CODE (x
) != FUNCTION_DECL
|| DECL_INITIAL (x
))
3337 /* Don't change DECL_CONTEXT of virtual methods. */
3338 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
3339 && ! DECL_CONTEXT (x
))
3340 DECL_CONTEXT (x
) = current_function_decl
;
3341 if (!DECL_CONTEXT (x
))
3342 DECL_CONTEXT (x
) = FROB_CONTEXT (current_namespace
);
3344 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3345 compiler wants to use. */
3346 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
3347 || TREE_CODE (x
) == NAMESPACE_DECL
|| TREE_CODE (x
) == TEMPLATE_TYPE_PARM
3348 || TREE_CODE (x
) == TEMPLATE_TEMPLATE_PARM
)
3349 name
= DECL_NAME (x
);
3354 /* Not needed...see below. */
3358 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3359 name
= TREE_OPERAND (name
, 0);
3361 /* Namespace-scoped variables are not found in the current level. */
3362 if (TREE_CODE (x
) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (x
))
3363 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3365 t
= lookup_name_current_level (name
);
3366 if (t
== error_mark_node
)
3368 /* error_mark_node is 0 for a while during initialization! */
3370 cp_error_at ("`%#D' used prior to declaration", x
);
3373 else if (t
!= NULL_TREE
)
3376 /* This is turned off until I have time to do it right (bpk). */
3377 /* With the code below that uses it... */
3378 file
= DECL_SOURCE_FILE (t
);
3379 line
= DECL_SOURCE_LINE (t
);
3381 if (TREE_CODE (t
) == PARM_DECL
)
3383 if (DECL_CONTEXT (t
) == NULL_TREE
)
3384 fatal ("parse errors have confused me too much");
3386 /* Check for duplicate params. */
3387 if (duplicate_decls (x
, t
))
3390 else if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
3391 || DECL_FUNCTION_TEMPLATE_P (x
))
3392 && is_overloaded_fn (t
))
3393 /* Don't do anything just yet. */;
3394 else if (t
== wchar_decl_node
)
3396 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3397 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
3399 /* Throw away the redeclaration. */
3402 else if (TREE_CODE (t
) != TREE_CODE (x
))
3404 if (duplicate_decls (x
, t
))
3407 else if (duplicate_decls (x
, t
))
3410 /* This is turned off until I have time to do it right (bpk). */
3412 /* Also warn if they did a prototype with `static' on it, but
3413 then later left the `static' off. */
3414 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3416 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3421 cp_warning ("`static' missing from declaration of `%D'",
3423 warning_with_file_and_line (file
, line
,
3424 "previous declaration of `%s'",
3425 decl_as_string (t
, 0));
3428 /* Now fix things so it'll do what they expect. */
3429 if (current_function_decl
)
3430 TREE_PUBLIC (current_function_decl
) = 0;
3432 /* Due to interference in memory reclamation (X may be
3433 obstack-deallocated at this point), we must guard against
3434 one really special case. [jason: This should be handled
3435 by start_function] */
3436 if (current_function_decl
== x
)
3437 current_function_decl
= t
;
3439 if (TREE_CODE (t
) == TYPE_DECL
)
3440 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3441 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3442 check_default_args (t
);
3446 else if (DECL_MAIN_P (x
))
3448 /* A redeclaration of main, but not a duplicate of the
3453 This function shall not be overloaded. */
3454 cp_error_at ("invalid redeclaration of `%D'", t
);
3455 cp_error ("as `%D'", x
);
3456 /* We don't try to push this declaration since that
3462 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3464 t
= push_overloaded_decl (x
, 1);
3465 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3468 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_NAMESPACE_SCOPE_P (x
))
3469 return push_overloaded_decl (x
, 0);
3471 /* If declaring a type as a typedef, copy the type (unless we're
3472 at line 0), and install this TYPE_DECL as the new type's typedef
3473 name. See the extensive comment in ../c-decl.c (pushdecl). */
3474 if (TREE_CODE (x
) == TYPE_DECL
)
3476 tree type
= TREE_TYPE (x
);
3477 if (DECL_SOURCE_LINE (x
) == 0)
3479 if (TYPE_NAME (type
) == 0)
3480 TYPE_NAME (type
) = x
;
3482 else if (type
!= error_mark_node
&& TYPE_NAME (type
) != x
3483 /* We don't want to copy the type when all we're
3484 doing is making a TYPE_DECL for the purposes of
3486 && (!TYPE_NAME (type
)
3487 || TYPE_NAME (type
) != DECL_ABSTRACT_ORIGIN (x
)))
3489 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
3491 DECL_ORIGINAL_TYPE (x
) = type
;
3492 type
= build_type_copy (type
);
3493 TYPE_STUB_DECL (type
) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x
));
3494 TYPE_NAME (type
) = x
;
3495 TREE_TYPE (x
) = type
;
3500 if (type
!= error_mark_node
3502 && TYPE_IDENTIFIER (type
))
3503 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3506 /* Multiple external decls of the same identifier ought to match.
3508 We get warnings about inline functions where they are defined.
3509 We get warnings about other functions from push_overloaded_decl.
3511 Avoid duplicate warnings where they are used. */
3512 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3516 if (IDENTIFIER_NAMESPACE_VALUE (name
) != NULL_TREE
3517 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name
))
3518 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name
))))
3519 decl
= IDENTIFIER_NAMESPACE_VALUE (name
);
3524 /* If different sort of thing, we already gave an error. */
3525 && TREE_CODE (decl
) == TREE_CODE (x
)
3526 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3528 cp_pedwarn ("type mismatch with previous external decl", x
);
3529 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3533 /* This name is new in its binding level.
3534 Install the new declaration and return it. */
3535 if (namespace_bindings_p ())
3537 /* Install a global value. */
3539 /* If the first global decl has external linkage,
3540 warn if we later see static one. */
3541 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
3542 TREE_PUBLIC (name
) = 1;
3544 /* Don't install an artificial TYPE_DECL if we already have
3545 another _DECL with that name. */
3546 if (TREE_CODE (x
) != TYPE_DECL
3548 || ! DECL_ARTIFICIAL (x
))
3550 if (TREE_CODE (x
) == FUNCTION_DECL
)
3552 ((IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
3553 || (IDENTIFIER_GLOBAL_VALUE (name
) == x
), 378);
3554 SET_IDENTIFIER_NAMESPACE_VALUE (name
, x
);
3557 /* Don't forget if the function was used via an implicit decl. */
3558 if (IDENTIFIER_IMPLICIT_DECL (name
)
3559 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3562 /* Don't forget if its address was taken in that way. */
3563 if (IDENTIFIER_IMPLICIT_DECL (name
)
3564 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3565 TREE_ADDRESSABLE (x
) = 1;
3567 /* Warn about mismatches against previous implicit decl. */
3568 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3569 /* If this real decl matches the implicit, don't complain. */
3570 && ! (TREE_CODE (x
) == FUNCTION_DECL
3571 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3573 ("`%D' was previously implicitly declared to return `int'", x
);
3575 /* If new decl is `static' and an `extern' was seen previously,
3577 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3578 warn_extern_redeclared_static (x
, t
);
3582 /* Here to install a non-global value. */
3583 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3584 tree oldglobal
= IDENTIFIER_NAMESPACE_VALUE (name
);
3586 /* Don't install an artificial TYPE_DECL if we already have
3587 another _DECL with that name. */
3588 if (TREE_CODE (x
) != TYPE_DECL
3590 || ! DECL_ARTIFICIAL (x
))
3591 set_identifier_local_value_with_scope (name
, x
, b
);
3593 /* If this is a TYPE_DECL, push it into the type value slot. */
3594 if (TREE_CODE (x
) == TYPE_DECL
)
3595 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3597 /* Clear out any TYPE_DECL shadowed by a namespace so that
3598 we won't think this is a type. The C struct hack doesn't
3599 go through namespaces. */
3600 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3601 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3603 /* If this is an extern function declaration, see if we
3604 have a global definition or declaration for the function. */
3605 if (oldlocal
== NULL_TREE
3606 && DECL_EXTERNAL (x
)
3607 && oldglobal
!= NULL_TREE
3608 && TREE_CODE (x
) == FUNCTION_DECL
3609 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3611 /* We have one. Their types must agree. */
3612 if (decls_match (x
, oldglobal
))
3616 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3617 cp_warning_at ("global declaration `%#D'", oldglobal
);
3620 /* If we have a local external declaration,
3621 and no file-scope declaration has yet been seen,
3622 then if we later have a file-scope decl it must not be static. */
3623 if (oldlocal
== NULL_TREE
3624 && oldglobal
== NULL_TREE
3625 && DECL_EXTERNAL (x
)
3628 TREE_PUBLIC (name
) = 1;
3631 if (DECL_FROM_INLINE (x
))
3632 /* Inline decls shadow nothing. */;
3634 /* Warn if shadowing an argument at the top level of the body. */
3635 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3636 && TREE_CODE (oldlocal
) == PARM_DECL
3637 && TREE_CODE (x
) != PARM_DECL
)
3639 /* Go to where the parms should be and see if we
3641 struct binding_level
*b
= current_binding_level
->level_chain
;
3647 if (b
->parm_flag
== 1)
3648 cp_error ("declaration of `%#D' shadows a parameter", name
);
3650 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3651 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3653 warning ("variable `%s' shadows local",
3654 IDENTIFIER_POINTER (name
));
3655 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3657 /* Maybe warn if shadowing something else. */
3658 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3659 /* No shadow warnings for internally generated vars. */
3660 && ! DECL_ARTIFICIAL (x
)
3661 /* No shadow warnings for vars made for inlining. */
3662 && ! DECL_FROM_INLINE (x
))
3664 char *warnstring
= NULL
;
3666 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3667 warnstring
= "declaration of `%s' shadows a parameter";
3668 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3669 && current_class_ptr
3670 && !TREE_STATIC (name
))
3671 warnstring
= "declaration of `%s' shadows a member of `this'";
3672 else if (oldlocal
!= NULL_TREE
)
3673 warnstring
= "declaration of `%s' shadows previous local";
3674 else if (oldglobal
!= NULL_TREE
)
3675 /* XXX shadow warnings in outer-more namespaces */
3676 warnstring
= "declaration of `%s' shadows global declaration";
3679 warning (warnstring
, IDENTIFIER_POINTER (name
));
3681 /* Check to see if decl redeclares a template parameter. */
3682 if (oldlocal
&& (current_class_type
|| current_function_decl
)
3683 && current_template_parms
)
3685 if (decl_template_parm_p (oldlocal
))
3687 cp_error ("re-using name of template parameter `%T' in this scope", name
);
3688 cp_error_at (" previously declared here `%#D'", oldlocal
);
3693 if (TREE_CODE (x
) == FUNCTION_DECL
)
3694 check_default_args (x
);
3696 /* Keep count of variables in this level with incomplete type. */
3697 if (TREE_CODE (x
) == VAR_DECL
3698 && TREE_TYPE (x
) != error_mark_node
3699 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3700 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3701 /* RTTI TD entries are created while defining the type_info. */
3702 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3703 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3704 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3707 /* Put decls on list in reverse order.
3708 We will reverse them later if necessary. */
3709 TREE_CHAIN (x
) = b
->names
;
3711 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3712 my_friendly_abort (124);
3717 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3718 caller to set DECL_CONTEXT properly. */
3721 pushdecl_with_scope (x
, level
)
3723 struct binding_level
*level
;
3725 register struct binding_level
*b
;
3726 tree function_decl
= current_function_decl
;
3728 current_function_decl
= NULL_TREE
;
3729 if (level
->parm_flag
== 2)
3731 b
= class_binding_level
;
3732 class_binding_level
= level
;
3733 pushdecl_class_level (x
);
3734 class_binding_level
= b
;
3738 b
= current_binding_level
;
3739 current_binding_level
= level
;
3741 current_binding_level
= b
;
3743 current_function_decl
= function_decl
;
3747 /* Like pushdecl, only it places X in the current namespace,
3751 pushdecl_namespace_level (x
)
3754 register struct binding_level
*b
= inner_binding_level
;
3757 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
3759 /* Now, the type_shadowed stack may screw us. Munge it so it does
3761 if (TREE_CODE (x
) == TYPE_DECL
)
3763 tree name
= DECL_NAME (x
);
3765 tree
*ptr
= (tree
*)0;
3766 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3768 tree shadowed
= b
->type_shadowed
;
3769 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3770 if (TREE_PURPOSE (shadowed
) == name
)
3772 ptr
= &TREE_VALUE (shadowed
);
3773 /* Can't break out of the loop here because sometimes
3774 a binding level will have duplicate bindings for
3775 PT names. It's gross, but I haven't time to fix it. */
3778 newval
= TREE_TYPE (x
);
3779 if (ptr
== (tree
*)0)
3781 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3782 up here if this is changed to an assertion. --KR */
3783 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3793 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3797 pushdecl_top_level (x
)
3800 tree cur_namespace
= current_namespace
;
3801 current_namespace
= global_namespace
;
3802 x
= pushdecl_namespace_level (x
);
3803 current_namespace
= cur_namespace
;
3807 /* Make the declaration of X appear in CLASS scope. */
3810 pushdecl_class_level (x
)
3813 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3814 scope looks for the pre-mangled name. */
3815 register tree name
= DECL_NAME (x
);
3819 if (TYPE_BEING_DEFINED (current_class_type
))
3821 /* A name N used in a class S shall refer to the same declaration
3822 in its context and when re-evaluated in the completed scope of S.
3823 Types, enums, and static vars are checked here; other
3824 members are checked in finish_struct. */
3825 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3826 tree ilv
= IDENTIFIER_LOCAL_VALUE (name
);
3829 && flag_optional_diags
3830 /* Don't complain about inherited names. */
3831 && id_in_current_class (name
)
3832 /* Or shadowed tags. */
3833 && !(DECL_DECLARES_TYPE_P (icv
)
3834 && DECL_CONTEXT (icv
) == current_class_type
))
3836 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name
, x
);
3837 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
3841 /* Check to see if decl redeclares a template parameter. */
3842 if (ilv
&& ! decls_match (ilv
, x
)
3843 && (current_class_type
|| current_function_decl
)
3844 && current_template_parms
)
3846 if (decl_template_parm_p (ilv
))
3848 cp_error ("re-using name of template parameter `%T' in this scope", name
);
3849 cp_error_at (" previously declared here `%#D'", ilv
);
3854 push_class_level_binding (name
, x
);
3855 if (TREE_CODE (x
) == TYPE_DECL
)
3857 set_identifier_type_value (name
, TREE_TYPE (x
));
3863 /* This function is used to push the mangled decls for nested types into
3864 the appropriate scope. Previously pushdecl_top_level was used, but that
3865 is incorrect for members of local classes. */
3868 pushdecl_nonclass_level (x
)
3871 struct binding_level
*b
= current_binding_level
;
3873 my_friendly_assert (b
->parm_flag
!= 2, 180);
3876 /* Get out of template binding levels */
3877 while (b
->pseudo_global
)
3881 pushdecl_with_scope (x
, b
);
3885 /* Make the declaration(s) of X appear in CLASS scope
3886 under the name NAME. */
3889 push_class_level_binding (name
, x
)
3893 /* The class_binding_level will be NULL if x is a template
3894 parameter name in a member template. */
3895 if (!class_binding_level
)
3898 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3899 && purpose_member (name
, class_binding_level
->class_shadowed
))
3902 maybe_push_cache_obstack ();
3903 class_binding_level
->class_shadowed
3904 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3905 class_binding_level
->class_shadowed
);
3907 IDENTIFIER_CLASS_VALUE (name
) = x
;
3908 obstack_ptr_grow (&decl_obstack
, x
);
3911 /* Insert another USING_DECL into the current binding level,
3912 returning this declaration. If this is a redeclaration,
3913 do nothing and return NULL_TREE. */
3916 push_using_decl (scope
, name
)
3922 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
3923 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
3924 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
3925 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
3929 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
3930 DECL_INITIAL (decl
) = scope
;
3931 TREE_CHAIN (decl
) = current_binding_level
->usings
;
3932 current_binding_level
->usings
= decl
;
3936 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3937 changed (i.e. there was already a directive), or the fresh
3938 TREE_LIST otherwise. */
3941 push_using_directive (used
)
3944 tree ud
= current_binding_level
->using_directives
;
3945 tree iter
, ancestor
;
3947 /* Check if we already have this. */
3948 if (purpose_member (used
, ud
) != NULL_TREE
)
3951 /* Recursively add all namespaces used. */
3952 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
3953 push_using_directive (TREE_PURPOSE (iter
));
3955 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
3956 ud
= current_binding_level
->using_directives
;
3957 ud
= perm_tree_cons (used
, ancestor
, ud
);
3958 current_binding_level
->using_directives
= ud
;
3962 /* DECL is a FUNCTION_DECL which may have other definitions already in
3963 place. We get around this by making the value of the identifier point
3964 to a list of all the things that want to be referenced by that name. It
3965 is then up to the users of that name to decide what to do with that
3968 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3969 slot. It is dealt with the same way.
3971 The value returned may be a previous declaration if we guessed wrong
3972 about what language DECL should belong to (C or C++). Otherwise,
3973 it's always DECL (and never something that's not a _DECL). */
3976 push_overloaded_decl (decl
, forgettable
)
3980 tree orig_name
= DECL_NAME (decl
);
3982 int doing_global
= (namespace_bindings_p () || ! forgettable
);
3986 old
= namespace_binding (orig_name
, DECL_CONTEXT (decl
));
3987 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3988 && DECL_ARTIFICIAL (old
)
3989 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3991 if (duplicate_decls (decl
, old
))
3998 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
4000 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
4002 current_binding_level
->shadowed
4003 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
4010 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
4012 tree t
= TREE_TYPE (old
);
4013 if (IS_AGGR_TYPE (t
) && warn_shadow
4014 && (! DECL_IN_SYSTEM_HEADER (decl
)
4015 || ! DECL_IN_SYSTEM_HEADER (old
)))
4016 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
4019 else if (is_overloaded_fn (old
))
4023 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
4024 if (decl
== OVL_CURRENT (tmp
)
4025 || duplicate_decls (decl
, OVL_CURRENT (tmp
)))
4026 return OVL_CURRENT (tmp
);
4030 cp_error_at ("previous non-function declaration `%#D'", old
);
4031 cp_error ("conflicts with function declaration `%#D'", decl
);
4036 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4038 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4039 old
= ovl_cons (old
, NULL_TREE
);
4040 old
= ovl_cons (decl
, old
);
4043 /* orig_name is not ambiguous. */
4047 set_namespace_binding (orig_name
, current_namespace
, old
);
4049 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
4054 /* Generate an implicit declaration for identifier FUNCTIONID
4055 as a function of type int (). Print a warning if appropriate. */
4058 implicitly_declare (functionid
)
4062 int temp
= allocation_temporary_p ();
4064 push_obstacks_nochange ();
4066 /* Save the decl permanently so we can warn if definition follows.
4067 In ANSI C, warn_implicit is usually false, so the saves little space.
4068 But in C++, it's usually true, hence the extra code. */
4069 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
4070 end_temporary_allocation ();
4072 /* We used to reuse an old implicit decl here,
4073 but this loses with inline functions because it can clobber
4074 the saved decl chains. */
4075 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4077 DECL_EXTERNAL (decl
) = 1;
4078 TREE_PUBLIC (decl
) = 1;
4080 /* ANSI standard says implicit declarations are in the innermost block.
4081 So we record the decl in the standard fashion. */
4083 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
4086 /* Only one warning per identifier. */
4087 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4089 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4092 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4099 /* Return zero if the declaration NEWDECL is valid
4100 when the declaration OLDDECL (assumed to be for the same name)
4101 has already been seen.
4102 Otherwise return an error message format string with a %s
4103 where the identifier should go. */
4106 redeclaration_error_message (newdecl
, olddecl
)
4107 tree newdecl
, olddecl
;
4109 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4111 /* Because C++ can put things into name space for free,
4112 constructs like "typedef struct foo { ... } foo"
4113 would look like an erroneous redeclaration. */
4114 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
4117 return "redefinition of `%#D'";
4119 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4121 /* If this is a pure function, its olddecl will actually be
4122 the original initialization to `0' (which we force to call
4123 abort()). Don't complain about redefinition in this case. */
4124 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
4127 /* If both functions come from different namespaces, this is not
4128 a redeclaration - this is a conflict with a used function. */
4129 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4130 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4131 return "`%D' conflicts with used function";
4133 /* We'll complain about linkage mismatches in
4134 warn_extern_redeclared_static. */
4136 /* Defining the same name twice is no good. */
4137 if (DECL_INITIAL (olddecl
) != NULL_TREE
4138 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4140 if (DECL_NAME (olddecl
) == NULL_TREE
)
4141 return "`%#D' not declared in class";
4143 return "redefinition of `%#D'";
4147 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4149 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4150 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4151 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4152 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4153 && TYPE_SIZE (TREE_TYPE (newdecl
))
4154 && TYPE_SIZE (TREE_TYPE (olddecl
))))
4155 return "redefinition of `%#D'";
4158 else if (toplevel_bindings_p ())
4160 /* Objects declared at top level: */
4161 /* If at least one is a reference, it's ok. */
4162 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4164 /* Reject two definitions. */
4165 return "redefinition of `%#D'";
4169 /* Objects declared with block scope: */
4170 /* Reject two definitions, and reject a definition
4171 together with an external reference. */
4172 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4173 return "redeclaration of `%#D'";
4178 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4179 Create one if none exists so far for the current function.
4180 This function is called for both label definitions and label references. */
4186 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
4188 if (current_function_decl
== NULL_TREE
)
4190 error ("label `%s' referenced outside of any function",
4191 IDENTIFIER_POINTER (id
));
4195 if ((decl
== NULL_TREE
4196 || DECL_SOURCE_LINE (decl
) == 0)
4197 && (named_label_uses
== NULL
4198 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4199 || named_label_uses
->label_decl
!= decl
))
4201 struct named_label_list
*new_ent
;
4203 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
4204 new_ent
->label_decl
= decl
;
4205 new_ent
->names_in_scope
= current_binding_level
->names
;
4206 new_ent
->binding_level
= current_binding_level
;
4207 new_ent
->lineno_o_goto
= lineno
;
4208 new_ent
->filename_o_goto
= input_filename
;
4209 new_ent
->next
= named_label_uses
;
4210 named_label_uses
= new_ent
;
4213 /* Use a label already defined or ref'd with this name. */
4214 if (decl
!= NULL_TREE
)
4216 /* But not if it is inherited and wasn't declared to be inheritable. */
4217 if (DECL_CONTEXT (decl
) != current_function_decl
4218 && ! C_DECLARED_LABEL_FLAG (decl
))
4219 return shadow_label (id
);
4223 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4225 /* Make sure every label has an rtx. */
4228 /* A label not explicitly declared must be local to where it's ref'd. */
4229 DECL_CONTEXT (decl
) = current_function_decl
;
4231 DECL_MODE (decl
) = VOIDmode
;
4233 /* Say where one reference is to the label,
4234 for the sake of the error if it is not defined. */
4235 DECL_SOURCE_LINE (decl
) = lineno
;
4236 DECL_SOURCE_FILE (decl
) = input_filename
;
4238 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4240 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
4241 named_label_uses
->label_decl
= decl
;
4246 /* Make a label named NAME in the current function,
4247 shadowing silently any that may be inherited from containing functions
4248 or containing scopes.
4250 Note that valid use, if the label being shadowed
4251 comes from another scope in the same function,
4252 requires calling declare_nonlocal_label right away. */
4258 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
4260 if (decl
!= NULL_TREE
)
4262 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4263 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4266 return lookup_label (name
);
4269 /* Define a label, specifying the location in the source file.
4270 Return the LABEL_DECL node for the label, if the definition is valid.
4271 Otherwise return 0. */
4274 define_label (filename
, line
, name
)
4281 if (minimal_parse_mode
)
4283 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4284 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
4286 DECL_SOURCE_LINE (decl
) = line
;
4287 DECL_SOURCE_FILE (decl
) = filename
;
4292 decl
= lookup_label (name
);
4294 /* After labels, make any new cleanups go into their
4295 own new (temporary) binding contour. */
4296 current_binding_level
->more_cleanups_ok
= 0;
4298 /* If label with this name is known from an outer context, shadow it. */
4299 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
4301 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4302 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4303 decl
= lookup_label (name
);
4306 if (name
== get_identifier ("wchar_t"))
4307 cp_pedwarn ("label named wchar_t");
4309 if (DECL_INITIAL (decl
) != NULL_TREE
)
4311 cp_error ("duplicate label `%D'", decl
);
4316 struct named_label_list
*uses
, *prev
;
4319 /* Mark label as having been defined. */
4320 DECL_INITIAL (decl
) = error_mark_node
;
4321 /* Say where in the source. */
4322 DECL_SOURCE_FILE (decl
) = filename
;
4323 DECL_SOURCE_LINE (decl
) = line
;
4326 uses
= named_label_uses
;
4327 while (uses
!= NULL
)
4328 if (uses
->label_decl
== decl
)
4330 struct binding_level
*b
= current_binding_level
;
4333 tree new_decls
= b
->names
;
4334 tree old_decls
= (b
== uses
->binding_level
)
4335 ? uses
->names_in_scope
: NULL_TREE
;
4336 while (new_decls
!= old_decls
)
4338 if (TREE_CODE (new_decls
) == VAR_DECL
4339 /* Don't complain about crossing initialization
4340 of internal entities. They can't be accessed,
4341 and they should be cleaned up
4342 by the time we get to the label. */
4343 && ! DECL_ARTIFICIAL (new_decls
)
4344 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4345 && DECL_INITIAL (new_decls
) != error_mark_node
)
4346 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4350 cp_error ("jump to label `%D'", decl
);
4351 error_with_file_and_line (uses
->filename_o_goto
,
4352 uses
->lineno_o_goto
,
4356 cp_error_at (" crosses initialization of `%#D'",
4359 new_decls
= TREE_CHAIN (new_decls
);
4361 if (b
== uses
->binding_level
)
4367 prev
->next
= uses
->next
;
4369 named_label_uses
= uses
->next
;
4378 current_function_return_value
= NULL_TREE
;
4385 struct binding_level
*level
;
4386 struct cp_switch
*next
;
4389 static struct cp_switch
*switch_stack
;
4395 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4396 p
->level
= current_binding_level
;
4397 p
->next
= switch_stack
;
4404 switch_stack
= switch_stack
->next
;
4407 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4408 /* XXX Note decl is never actually used. (bpk) */
4411 define_case_label ()
4413 tree cleanup
= last_cleanup_this_contour ();
4414 struct binding_level
*b
= current_binding_level
;
4419 static int explained
= 0;
4420 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4421 warning ("where case label appears here");
4424 warning ("(enclose actions of previous case statements requiring");
4425 warning ("destructors in their own binding contours.)");
4430 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4432 tree new_decls
= b
->names
;
4433 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4435 if (TREE_CODE (new_decls
) == VAR_DECL
4436 /* Don't complain about crossing initialization
4437 of internal entities. They can't be accessed,
4438 and they should be cleaned up
4439 by the time we get to the label. */
4440 && ! DECL_ARTIFICIAL (new_decls
)
4441 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4442 && DECL_INITIAL (new_decls
) != error_mark_node
)
4443 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4446 error ("jump to case label");
4448 cp_error_at (" crosses initialization of `%#D'",
4454 /* After labels, make any new cleanups go into their
4455 own new (temporary) binding contour. */
4457 current_binding_level
->more_cleanups_ok
= 0;
4458 current_function_return_value
= NULL_TREE
;
4461 /* Return the list of declarations of the current level.
4462 Note that this list is in reverse order unless/until
4463 you nreverse it; and when you do nreverse it, you must
4464 store the result back using `storedecls' or you will lose. */
4469 return current_binding_level
->names
;
4472 /* Return the list of type-tags (for structs, etc) of the current level. */
4477 return current_binding_level
->tags
;
4480 /* Store the list of declarations of the current level.
4481 This is done for the parameter declarations of a function being defined,
4482 after they are modified in the light of any missing parameters. */
4488 current_binding_level
->names
= decls
;
4491 /* Similarly, store the list of tags of the current level. */
4497 current_binding_level
->tags
= tags
;
4500 /* Given NAME, an IDENTIFIER_NODE,
4501 return the structure (or union or enum) definition for that name.
4502 Searches binding levels from BINDING_LEVEL up to the global level.
4503 If THISLEVEL_ONLY is nonzero, searches only the specified context
4504 (but skips any tag-transparent contexts to find one that is
4505 meaningful for tags).
4506 FORM says which kind of type the caller wants;
4507 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4508 If the wrong kind of type is found, and it's not a template, an error is
4512 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4513 enum tree_code form
;
4515 struct binding_level
*binding_level
;
4518 register struct binding_level
*level
;
4519 /* Non-zero if, we should look past a pseudo-global level, even if
4521 int allow_pseudo_global
= 1;
4523 for (level
= binding_level
; level
; level
= level
->level_chain
)
4526 if (ANON_AGGRNAME_P (name
))
4527 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4529 /* There's no need for error checking here, because
4530 anon names are unique throughout the compilation. */
4531 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4532 return TREE_VALUE (tail
);
4534 else if (level
->namespace_p
)
4535 /* Do namespace lookup. */
4536 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
4538 tree old
= binding_for_name (name
, tail
);
4540 /* If we just skipped past a pseudo global level, even
4541 though THISLEVEL_ONLY, and we find a template class
4542 declaration, then we use the _TYPE node for the
4543 template. See the example below. */
4544 if (thislevel_only
&& !allow_pseudo_global
4545 && old
&& BINDING_VALUE (old
)
4546 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
4547 old
= TREE_TYPE (BINDING_VALUE (old
));
4549 old
= BINDING_TYPE (old
);
4551 /* If it has an original type, it is a typedef, and we
4552 should not return it. */
4553 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
4555 if (old
&& TREE_CODE (old
) != form
4556 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
4558 cp_error ("`%#D' redeclared as %C", old
, form
);
4563 if (thislevel_only
|| tail
== global_namespace
)
4567 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4569 if (TREE_PURPOSE (tail
) == name
)
4571 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4572 /* Should tighten this up; it'll probably permit
4573 UNION_TYPE and a struct template, for example. */
4575 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4577 /* Definition isn't the kind we were looking for. */
4578 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4582 return TREE_VALUE (tail
);
4585 if (thislevel_only
&& ! level
->tag_transparent
)
4587 if (level
->pseudo_global
&& allow_pseudo_global
)
4589 /* We must deal with cases like this:
4591 template <class T> struct S;
4592 template <class T> struct S {};
4594 When looking up `S', for the second declaration, we
4595 would like to find the first declaration. But, we
4596 are in the pseudo-global level created for the
4597 template parameters, rather than the (surrounding)
4598 namespace level. Thus, we keep going one more level,
4599 even though THISLEVEL_ONLY is non-zero. */
4600 allow_pseudo_global
= 0;
4606 if (current_class_type
&& level
->level_chain
->namespace_p
)
4608 /* Try looking in this class's tags before heading into
4609 global binding level. */
4610 tree context
= current_class_type
;
4613 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4617 these_tags
= CLASSTYPE_TAGS (context
);
4618 if (ANON_AGGRNAME_P (name
))
4621 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4623 return TREE_VALUE (tail
);
4624 these_tags
= TREE_CHAIN (these_tags
);
4629 if (TREE_PURPOSE (these_tags
) == name
)
4631 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4633 cp_error ("`%#D' redeclared as %C in class scope",
4634 TREE_VALUE (tail
), form
);
4637 return TREE_VALUE (tail
);
4639 these_tags
= TREE_CHAIN (these_tags
);
4641 /* If this type is not yet complete, then don't
4642 look at its context. */
4643 if (TYPE_SIZE (context
) == NULL_TREE
)
4645 /* Go to next enclosing type, if any. */
4646 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4649 context
= DECL_CONTEXT (context
);
4652 my_friendly_abort (10);
4665 set_current_level_tags_transparency (tags_transparent
)
4666 int tags_transparent
;
4668 current_binding_level
->tag_transparent
= tags_transparent
;
4672 /* Given a type, find the tag that was defined for it and return the tag name.
4673 Otherwise return 0. However, the value can never be 0
4674 in the cases in which this is used.
4676 C++: If NAME is non-zero, this is the new name to install. This is
4677 done when replacing anonymous tags with real tag names. */
4680 lookup_tag_reverse (type
, name
)
4684 register struct binding_level
*level
;
4686 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4689 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4691 if (TREE_VALUE (tail
) == type
)
4694 TREE_PURPOSE (tail
) = name
;
4695 return TREE_PURPOSE (tail
);
4702 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4703 Return the type value, or NULL_TREE if not found. */
4706 lookup_nested_type (type
, context
)
4710 if (context
== NULL_TREE
)
4714 switch (TREE_CODE (context
))
4718 tree ctype
= TREE_TYPE (context
);
4719 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4721 return TREE_VALUE (match
);
4722 context
= DECL_CONTEXT (context
);
4724 /* When we have a nested class whose member functions have
4725 local types (e.g., a set of enums), we'll arrive here
4726 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4727 the enclosing class. Instead, we want to make sure we
4728 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4729 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4730 context
= TREE_CHAIN (context
);
4734 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4735 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4738 my_friendly_abort (12);
4744 /* Look up NAME in the NAMESPACE. */
4747 lookup_namespace_name (namespace, name
)
4748 tree
namespace, name
;
4750 struct tree_binding _b
;
4753 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
4755 /* This happens for A::B<int> when B is a namespace. */
4756 if (TREE_CODE (name
) == NAMESPACE_DECL
)
4759 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4761 val
= binding_init (&_b
);
4762 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4763 return error_mark_node
;
4765 if (BINDING_VALUE (val
))
4767 val
= BINDING_VALUE (val
);
4769 /* If we have a single function from a using decl, pull it out. */
4770 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4771 val
= OVL_FUNCTION (val
);
4775 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4776 return error_mark_node
;
4780 make_typename_type (context
, name
)
4786 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4787 name
= TYPE_IDENTIFIER (name
);
4788 else if (TREE_CODE (name
) == TYPE_DECL
)
4789 name
= DECL_NAME (name
);
4793 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4795 name
= TREE_OPERAND (name
, 0);
4796 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4797 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4799 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4800 my_friendly_abort (2000);
4802 if (TREE_CODE (context
) == NAMESPACE_DECL
)
4804 /* We can get here from typename_sub0 in the explicit_template_type
4805 expansion. Just fail. */
4806 cp_error ("no class template named `%#T' in `%#T'",
4808 return error_mark_node
;
4811 if (! uses_template_parms (context
)
4812 || currently_open_class (context
))
4814 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4816 if (IS_AGGR_TYPE (context
))
4817 t
= lookup_field (context
, name
, 0, 0);
4821 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4822 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4824 cp_error ("no class template named `%#T' in `%#T'",
4826 return error_mark_node
;
4829 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4831 /*entering_scope=*/0);
4835 if (IS_AGGR_TYPE (context
))
4836 t
= lookup_field (context
, name
, 0, 1);
4842 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4843 return error_mark_node
;
4846 return TREE_TYPE (t
);
4850 if (processing_template_decl
)
4851 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4852 t
= make_lang_type (TYPENAME_TYPE
);
4853 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4854 d
= build_decl (TYPE_DECL
, name
, t
);
4855 if (processing_template_decl
)
4858 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4859 TYPE_NAME (TREE_TYPE (d
)) = d
;
4860 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4861 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4862 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4867 /* Select the right _DECL from multiple choices. */
4870 select_decl (binding
, flags
)
4875 val
= BINDING_VALUE (binding
);
4876 if (LOOKUP_NAMESPACES_ONLY (flags
))
4878 /* We are not interested in types. */
4879 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4884 /* If we could have a type and
4885 we have nothing or we need a type and have none. */
4886 if (BINDING_TYPE (binding
)
4887 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4888 && TREE_CODE (val
) != TYPE_DECL
)))
4889 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4890 /* Don't return non-types if we really prefer types. */
4891 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4892 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4898 /* Unscoped lookup of a global, iterate over namespaces, considering
4899 using namespace statements. */
4902 unqualified_namespace_lookup (name
, flags
)
4906 struct tree_binding _binding
;
4907 tree b
= binding_init (&_binding
);
4908 tree initial
= current_decl_namespace();
4909 tree scope
= initial
;
4911 struct binding_level
*level
;
4912 tree val
= NULL_TREE
;
4916 val
= binding_for_name (name
, scope
);
4918 /* Initialize binding for this context. */
4919 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4920 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4922 /* Add all _DECLs seen through local using-directives. */
4923 for (level
= current_binding_level
;
4924 !level
->namespace_p
;
4925 level
= level
->level_chain
)
4926 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4928 /* Give up because of error. */
4931 /* Add all _DECLs seen through global using-directives. */
4932 /* XXX local and global using lists should work equally. */
4936 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4938 /* Give up because of error. */
4940 if (siter
== scope
) break;
4941 siter
= CP_DECL_CONTEXT (siter
);
4944 val
= select_decl (b
, flags
);
4945 if (scope
== global_namespace
)
4947 scope
= CP_DECL_CONTEXT (scope
);
4952 /* Combine prefer_type and namespaces_only into flags. */
4955 lookup_flags (prefer_type
, namespaces_only
)
4956 int prefer_type
, namespaces_only
;
4958 if (namespaces_only
)
4959 return LOOKUP_PREFER_NAMESPACES
;
4960 if (prefer_type
> 1)
4961 return LOOKUP_PREFER_TYPES
;
4962 if (prefer_type
> 0)
4963 return LOOKUP_PREFER_BOTH
;
4967 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4968 ignore it or not. Subroutine of lookup_name_real. */
4971 qualify_lookup (val
, flags
)
4975 if (val
== NULL_TREE
)
4977 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
4979 if ((flags
& LOOKUP_PREFER_TYPES
)
4980 && (TREE_CODE (val
) == TYPE_DECL
4981 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
4982 && DECL_CLASS_TEMPLATE_P (val
))))
4984 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
4989 /* Look up NAME in the current binding level and its superiors in the
4990 namespace of variables, functions and typedefs. Return a ..._DECL
4991 node of some kind representing its definition if there is only one
4992 such declaration, or return a TREE_LIST with all the overloaded
4993 definitions if there are many, or return 0 if it is undefined.
4995 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4996 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4997 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4998 Otherwise we prefer non-TYPE_DECLs.
5000 If NONCLASS is non-zero, we don't look for the NAME in class scope,
5001 using IDENTIFIER_CLASS_VALUE. */
5004 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
5006 int prefer_type
, nonclass
, namespaces_only
;
5010 tree from_obj
= NULL_TREE
;
5011 tree locval
, classval
;
5014 /* Hack: copy flag set by parser, if set. */
5015 if (only_namespace_names
)
5016 namespaces_only
= 1;
5018 if (prefer_type
== -2)
5020 extern int looking_for_typename
;
5021 tree type
= NULL_TREE
;
5024 prefer_type
= looking_for_typename
;
5026 flags
= lookup_flags (prefer_type
, namespaces_only
);
5027 /* During parsing, we need to complain. */
5028 flags
|= LOOKUP_COMPLAIN
;
5029 /* If the next thing is '<', class templates are types. */
5030 if (looking_for_template
)
5031 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5033 /* std:: becomes :: for now. */
5034 if (got_scope
== std_node
)
5035 got_scope
= void_type_node
;
5039 else if (got_object
!= error_mark_node
)
5044 if (type
== error_mark_node
)
5045 return error_mark_node
;
5046 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5047 type
= TREE_TYPE (type
);
5050 type
= complete_type (type
);
5052 if (TREE_CODE (type
) == VOID_TYPE
)
5053 type
= global_namespace
;
5054 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5056 struct tree_binding b
;
5057 val
= binding_init (&b
);
5058 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5060 val
= select_decl (val
, flags
);
5062 else if (! IS_AGGR_TYPE (type
)
5063 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5064 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5065 || TREE_CODE (type
) == TYPENAME_TYPE
)
5066 /* Someone else will give an error about this if needed. */
5068 else if (TYPE_BEING_DEFINED (type
))
5070 val
= IDENTIFIER_CLASS_VALUE (name
);
5071 if (val
&& DECL_CONTEXT (val
) != type
)
5073 struct binding_level
*b
= class_binding_level
;
5074 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5076 tree t
= purpose_member (name
, b
->class_shadowed
);
5077 if (t
&& TREE_VALUE (t
)
5078 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5080 val
= TREE_VALUE (t
);
5085 if (val
== NULL_TREE
)
5086 val
= lookup_field (type
, name
, 0, 1);
5088 else if (type
== current_class_type
)
5089 val
= IDENTIFIER_CLASS_VALUE (name
);
5091 val
= lookup_member (type
, name
, 0, prefer_type
);
5098 else if (got_object
&& val
)
5102 flags
= lookup_flags (prefer_type
, namespaces_only
);
5104 locval
= classval
= NULL_TREE
;
5106 if (! namespace_bindings_p ())
5107 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5109 /* In C++ class fields are between local and global scope,
5110 just before the global scope. */
5111 if (current_class_type
&& ! nonclass
)
5113 classval
= IDENTIFIER_CLASS_VALUE (name
);
5114 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5115 /* Try to find values from base classes if we are presently
5116 defining a type. We are presently only interested in
5118 classval
= lookup_field (current_class_type
, name
, 0, 1);
5120 /* Add implicit 'typename' to types from template bases. lookup_field
5121 will do this for us. If classval is actually from an enclosing
5122 scope, lookup_nested_field will get it for us. */
5123 else if (processing_template_decl
5124 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5125 && ! currently_open_class (DECL_CONTEXT (classval
))
5126 && uses_template_parms (current_class_type
))
5127 classval
= lookup_field (current_class_type
, name
, 0, 1);
5129 /* yylex() calls this with -2, since we should never start digging for
5130 the nested name at the point where we haven't even, for example,
5131 created the COMPONENT_REF or anything like that. */
5132 if (classval
== NULL_TREE
)
5133 classval
= lookup_nested_field (name
, ! yylex
);
5135 classval
= qualify_lookup (classval
, flags
);
5138 if (locval
&& classval
)
5140 if (current_scope () == current_function_decl
5141 && ! hack_decl_function_context (current_function_decl
))
5142 /* Not in a nested function. */
5146 /* This is incredibly horrible. The whole concept of
5147 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5148 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5150 tree lctx
= hack_decl_function_context (locval
);
5151 tree cctx
= hack_decl_function_context (classval
);
5153 if (lctx
== current_scope ())
5155 else if (lctx
== cctx
)
5158 /* I don't know which is right; let's just guess for now. */
5167 val
= unqualified_namespace_lookup (name
, flags
);
5169 /* Any other name takes precedence over an implicit typename. Warn the
5170 user about this potentially confusing lookup. */
5171 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5172 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5173 && TREE_TYPE (TREE_TYPE (val
)))
5175 if (locval
== NULL_TREE
)
5176 locval
= unqualified_namespace_lookup (name
, flags
);
5178 if (locval
&& val
!= locval
)
5184 /* To avoid redundant warnings, only warn when lexing, and the
5185 decls are significantly different. */
5186 subtype
= TREE_TYPE (TREE_TYPE (classval
));
5188 && ! (TREE_CODE (locval
) == TEMPLATE_DECL
5189 && CLASSTYPE_TEMPLATE_INFO (subtype
)
5190 && CLASSTYPE_TI_TEMPLATE (subtype
) == locval
)
5191 && ! (TREE_CODE (locval
) == TYPE_DECL
5192 && comptypes (TREE_TYPE (locval
), subtype
, 1)))
5194 static int explained
;
5196 cp_warning ("lookup of `%D' finds `%#D'", name
, locval
);
5198 (" instead of `%D' from dependent base class", classval
);
5202 cp_warning (" (use `typename %D' if that's what you meant)",
5212 /* This should only warn about types used in qualified-ids. */
5213 if (from_obj
&& from_obj
!= val
)
5215 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5216 && TREE_CODE (val
) == TYPE_DECL
5217 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5219 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5220 name
, got_object
, TREE_TYPE (from_obj
));
5221 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5225 /* We don't change val to from_obj if got_object depends on
5226 template parms because that breaks implicit typename for
5227 destructor calls. */
5228 if (! uses_template_parms (got_object
))
5232 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5233 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5235 /* Caller wants a class-or-namespace-name. */
5236 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5238 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5239 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5240 else if (TREE_TYPE (val
) == error_mark_node
)
5241 val
= error_mark_node
;
5243 /* If we have a single function from a using decl, pull it out. */
5244 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5245 val
= OVL_FUNCTION (val
);
5254 lookup_name_nonclass (name
)
5257 return lookup_name_real (name
, 0, 1, 0);
5261 lookup_function_nonclass (name
, args
)
5265 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5269 lookup_name_namespace_only (name
)
5272 /* type-or-namespace, nonclass, namespace_only */
5273 return lookup_name_real (name
, 1, 1, 1);
5277 lookup_name (name
, prefer_type
)
5281 return lookup_name_real (name
, prefer_type
, 0, 0);
5284 /* Similar to `lookup_name' but look only at current binding level. */
5287 lookup_name_current_level (name
)
5290 register tree t
= NULL_TREE
;
5292 if (current_binding_level
->namespace_p
)
5294 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5296 /* extern "C" function() */
5297 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5300 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5302 struct binding_level
*b
= current_binding_level
;
5305 if (purpose_member (name
, b
->shadowed
))
5306 return IDENTIFIER_LOCAL_VALUE (name
);
5317 /* Like lookup_name_current_level, but for types. */
5320 lookup_type_current_level (name
)
5323 register tree t
= NULL_TREE
;
5325 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5327 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5328 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5330 struct binding_level
*b
= current_binding_level
;
5333 if (purpose_member (name
, b
->type_shadowed
))
5334 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5346 begin_only_namespace_names ()
5348 only_namespace_names
= 1;
5352 end_only_namespace_names ()
5354 only_namespace_names
= 0;
5357 /* Arrange for the user to get a source line number, even when the
5358 compiler is going down in flames, so that she at least has a
5359 chance of working around problems in the compiler. We used to
5360 call error(), but that let the segmentation fault continue
5361 through; now, it's much more passive by asking them to send the
5362 maintainers mail about the problem. */
5366 int sig ATTRIBUTE_UNUSED
;
5368 signal (SIGSEGV
, SIG_DFL
);
5370 signal (SIGIOT
, SIG_DFL
);
5373 signal (SIGILL
, SIG_DFL
);
5376 signal (SIGABRT
, SIG_DFL
);
5379 signal (SIGBUS
, SIG_DFL
);
5381 my_friendly_abort (0);
5385 /* Unused -- brendan 970107 */
5386 /* Array for holding types considered "built-in". These types
5387 are output in the module in which `main' is defined. */
5388 static tree
*builtin_type_tdescs_arr
;
5389 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5392 /* Push the declarations of builtin types into the namespace.
5393 RID_INDEX, if < RID_MAX is the index of the builtin type
5394 in the array RID_POINTERS. NAME is the name used when looking
5395 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5398 record_builtin_type (rid_index
, name
, type
)
5403 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5404 tree tdecl
= NULL_TREE
;
5406 if ((int) rid_index
< (int) RID_MAX
)
5407 rname
= ridpointers
[(int) rid_index
];
5409 tname
= get_identifier (name
);
5411 TYPE_BUILT_IN (type
) = 1;
5415 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5416 set_identifier_type_value (tname
, NULL_TREE
);
5417 if ((int) rid_index
< (int) RID_MAX
)
5418 /* Built-in types live in the global namespace. */
5419 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5421 if (rname
!= NULL_TREE
)
5423 if (tname
!= NULL_TREE
)
5425 set_identifier_type_value (rname
, NULL_TREE
);
5426 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5430 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5431 set_identifier_type_value (rname
, NULL_TREE
);
5436 /* Record one of the standard Java types.
5437 * Declare it as having the given NAME.
5438 * If SIZE > 0, it is the size of one of the integral types;
5439 * otherwise it is the negative of the size of one of the other types. */
5442 record_builtin_java_type (name
, size
)
5448 type
= make_signed_type (size
);
5449 else if (size
> -32)
5450 { /* "__java_char" or ""__java_boolean". */
5451 type
= make_unsigned_type (-size
);
5452 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5455 { /* "__java_float" or ""__java_double". */
5456 type
= make_node (REAL_TYPE
);
5457 TYPE_PRECISION (type
) = - size
;
5460 record_builtin_type (RID_MAX
, name
, type
);
5461 decl
= TYPE_NAME (type
);
5462 DECL_IGNORED_P (decl
) = 1;
5463 TYPE_FOR_JAVA (type
) = 1;
5467 /* Push a type into the namespace so that the back-ends ignore it. */
5470 record_unknown_type (type
, name
)
5474 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5475 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5476 DECL_IGNORED_P (decl
) = 1;
5477 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5478 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5479 TYPE_ALIGN (type
) = 1;
5480 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5483 /* Push overloaded decl, in global scope, with one argument so it
5484 can be used as a callback from define_function. */
5487 push_overloaded_decl_1 (x
)
5490 push_overloaded_decl (x
, 0);
5497 auto_function (name
, type
, code
)
5499 enum built_in_function code
;
5501 return define_function
5502 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5503 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5507 /* Create the predefined scalar types of C,
5508 and some nodes representing standard constants (0, 1, (void *)0).
5509 Initialize the global binding level.
5510 Make definitions for built-in primitive functions. */
5513 init_decl_processing ()
5515 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5517 /* Data type of memcpy. */
5518 tree memcpy_ftype
, strlen_ftype
;
5519 int wchar_type_size
;
5521 tree array_domain_type
;
5522 tree vb_off_identifier
= NULL_TREE
;
5523 /* Function type `char *(char *, char *)' and similar ones */
5524 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5525 tree sizetype_endlink
;
5526 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5527 tree void_ftype
, void_ftype_int
, void_ftype_ptr
;
5529 /* Have to make these distinct before we try using them. */
5530 lang_name_cplusplus
= get_identifier ("C++");
5531 lang_name_c
= get_identifier ("C");
5532 lang_name_java
= get_identifier ("Java");
5534 /* Enter the global namespace. */
5535 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5536 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5537 current_lang_name
= lang_name_cplusplus
;
5538 push_namespace (get_identifier ("::"));
5539 global_namespace
= current_namespace
;
5540 current_lang_name
= NULL_TREE
;
5542 if (flag_strict_prototype
== 2)
5543 flag_strict_prototype
= pedantic
;
5545 strict_prototypes_lang_c
= flag_strict_prototype
;
5548 current_lang_name
= lang_name_c
;
5550 current_function_decl
= NULL_TREE
;
5551 named_labels
= NULL_TREE
;
5552 named_label_uses
= NULL
;
5553 current_binding_level
= NULL_BINDING_LEVEL
;
5554 free_binding_level
= NULL_BINDING_LEVEL
;
5556 #ifndef __CYGWIN32__
5557 /* Because most segmentation signals can be traced back into user
5558 code, catch them and at least give the user a chance of working
5559 around compiler bugs. */
5560 signal (SIGSEGV
, signal_catch
);
5562 /* We will also catch aborts in the back-end through signal_catch and
5563 give the user a chance to see where the error might be, and to defeat
5564 aborts in the back-end when there have been errors previously in their
5567 signal (SIGIOT
, signal_catch
);
5570 signal (SIGILL
, signal_catch
);
5573 signal (SIGABRT
, signal_catch
);
5576 signal (SIGBUS
, signal_catch
);
5578 #else /* ndef __CYGWIN32__ */
5579 /* Cygwin32 cannot handle catching signals other than
5580 SIGABRT yet. We hope this will cease to be the case soon. */
5582 signal (SIGABRT
, signal_catch
);
5584 #endif /* ndef __CYGWIN32__ */
5586 gcc_obstack_init (&decl_obstack
);
5588 /* Must lay these out before anything else gets laid out. */
5589 error_mark_node
= make_node (ERROR_MARK
);
5590 TREE_PERMANENT (error_mark_node
) = 1;
5591 TREE_TYPE (error_mark_node
) = error_mark_node
;
5592 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5593 TREE_TYPE (error_mark_list
) = error_mark_node
;
5595 /* Make the binding_level structure for global names. */
5597 global_binding_level
= current_binding_level
;
5598 /* The global level is the namespace level of ::. */
5599 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5600 declare_namespace_level ();
5602 this_identifier
= get_identifier (THIS_NAME
);
5603 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5604 ctor_identifier
= get_identifier (CTOR_NAME
);
5605 dtor_identifier
= get_identifier (DTOR_NAME
);
5606 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5607 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5608 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5609 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5610 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5611 if (flag_handle_signatures
)
5613 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5614 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5615 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5618 /* Define `int' and `char' first so that dbx will output them first. */
5620 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5621 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5623 /* Define `char', which is like either `signed char' or `unsigned char'
5624 but not the same as either. */
5628 ? make_signed_type (CHAR_TYPE_SIZE
)
5629 : make_unsigned_type (CHAR_TYPE_SIZE
));
5630 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5632 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5633 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5635 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5636 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5638 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5639 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5640 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5642 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5643 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5645 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5646 record_builtin_type (RID_MAX
, "long long unsigned int",
5647 long_long_unsigned_type_node
);
5648 record_builtin_type (RID_MAX
, "long long unsigned",
5649 long_long_unsigned_type_node
);
5651 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5652 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5653 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5654 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5655 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5657 /* `unsigned long' is the standard type for sizeof.
5658 Note that stddef.h uses `unsigned long',
5659 and this must agree, even if long and int are the same size. */
5661 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5664 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5666 /* Define both `signed char' and `unsigned char'. */
5667 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5668 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5669 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5670 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5672 /* These are types that type_for_size and type_for_mode use. */
5673 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5674 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5675 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5676 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5677 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5678 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5679 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5680 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5681 #if HOST_BITS_PER_WIDE_INT >= 64
5682 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5683 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5685 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5686 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5687 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5688 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5689 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5690 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5691 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5692 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5693 #if HOST_BITS_PER_WIDE_INT >= 64
5694 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5695 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5698 float_type_node
= make_node (REAL_TYPE
);
5699 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5700 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5701 layout_type (float_type_node
);
5703 double_type_node
= make_node (REAL_TYPE
);
5704 if (flag_short_double
)
5705 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5707 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5708 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5709 layout_type (double_type_node
);
5711 long_double_type_node
= make_node (REAL_TYPE
);
5712 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5713 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5714 layout_type (long_double_type_node
);
5716 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5717 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5718 complex_integer_type_node
));
5719 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5720 layout_type (complex_integer_type_node
);
5722 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5723 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5724 complex_float_type_node
));
5725 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5726 layout_type (complex_float_type_node
);
5728 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5729 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5730 complex_double_type_node
));
5731 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5732 layout_type (complex_double_type_node
);
5734 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5735 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5736 complex_long_double_type_node
));
5737 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5738 layout_type (complex_long_double_type_node
);
5740 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5741 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5742 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5743 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5744 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5745 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5746 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5747 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5749 integer_zero_node
= build_int_2 (0, 0);
5750 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5751 integer_one_node
= build_int_2 (1, 0);
5752 TREE_TYPE (integer_one_node
) = integer_type_node
;
5753 integer_two_node
= build_int_2 (2, 0);
5754 TREE_TYPE (integer_two_node
) = integer_type_node
;
5755 integer_three_node
= build_int_2 (3, 0);
5756 TREE_TYPE (integer_three_node
) = integer_type_node
;
5758 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5759 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5760 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5761 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5762 TYPE_PRECISION (boolean_type_node
) = 1;
5763 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5764 boolean_false_node
= build_int_2 (0, 0);
5765 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5766 boolean_true_node
= build_int_2 (1, 0);
5767 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5769 /* These are needed by stor-layout.c. */
5770 size_zero_node
= size_int (0);
5771 size_one_node
= size_int (1);
5773 signed_size_zero_node
= build_int_2 (0, 0);
5774 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5776 void_type_node
= make_node (VOID_TYPE
);
5777 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5778 layout_type (void_type_node
); /* Uses integer_zero_node. */
5779 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5780 TREE_PARMLIST (void_list_node
) = 1;
5782 null_pointer_node
= build_int_2 (0, 0);
5783 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5784 layout_type (TREE_TYPE (null_pointer_node
));
5786 /* Used for expressions that do nothing, but are not errors. */
5787 void_zero_node
= build_int_2 (0, 0);
5788 TREE_TYPE (void_zero_node
) = void_type_node
;
5790 string_type_node
= build_pointer_type (char_type_node
);
5791 const_string_type_node
5792 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5794 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5797 /* Make a type to be the domain of a few array types
5798 whose domains don't really matter.
5799 200 is small enough that it always fits in size_t
5800 and large enough that it can hold most function names for the
5801 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5802 array_domain_type
= build_index_type (build_int_2 (200, 0));
5804 /* Make a type for arrays of characters.
5805 With luck nothing will ever really depend on the length of this
5807 char_array_type_node
5808 = build_array_type (char_type_node
, array_domain_type
);
5809 /* Likewise for arrays of ints. */
5811 = build_array_type (integer_type_node
, array_domain_type
);
5813 /* This is just some anonymous class type. Nobody should ever
5814 need to look inside this envelope. */
5815 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5817 default_function_type
5818 = build_function_type (integer_type_node
, NULL_TREE
);
5820 ptr_type_node
= build_pointer_type (void_type_node
);
5822 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5824 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5826 endlink
= void_list_node
;
5827 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5828 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5829 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5831 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5832 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5833 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5834 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5835 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5837 void_ftype
= build_function_type (void_type_node
, endlink
);
5838 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5840 = build_function_type (void_type_node
,
5841 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5843 = build_exception_variant (void_ftype_ptr
,
5844 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5847 = build_function_type (float_type_node
,
5848 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5851 = build_function_type (double_type_node
, double_endlink
);
5853 ldouble_ftype_ldouble
5854 = build_function_type (long_double_type_node
,
5855 tree_cons (NULL_TREE
, long_double_type_node
,
5858 double_ftype_double_double
5859 = build_function_type (double_type_node
,
5860 tree_cons (NULL_TREE
, double_type_node
,
5864 = build_function_type (integer_type_node
, int_endlink
);
5867 = build_function_type (long_integer_type_node
,
5868 tree_cons (NULL_TREE
, long_integer_type_node
,
5871 int_ftype_cptr_cptr_sizet
5872 = build_function_type (integer_type_node
,
5873 tree_cons (NULL_TREE
, const_ptr_type_node
,
5874 tree_cons (NULL_TREE
, const_ptr_type_node
,
5875 tree_cons (NULL_TREE
,
5879 string_ftype_ptr_ptr
/* strcpy prototype */
5880 = build_function_type (string_type_node
,
5881 tree_cons (NULL_TREE
, string_type_node
,
5882 tree_cons (NULL_TREE
,
5883 const_string_type_node
,
5886 int_ftype_string_string
/* strcmp prototype */
5887 = build_function_type (integer_type_node
,
5888 tree_cons (NULL_TREE
, const_string_type_node
,
5889 tree_cons (NULL_TREE
,
5890 const_string_type_node
,
5893 strlen_ftype
/* strlen prototype */
5894 = build_function_type (sizetype
,
5895 tree_cons (NULL_TREE
, const_string_type_node
,
5898 memcpy_ftype
/* memcpy prototype */
5899 = build_function_type (ptr_type_node
,
5900 tree_cons (NULL_TREE
, ptr_type_node
,
5901 tree_cons (NULL_TREE
, const_ptr_type_node
,
5902 sizetype_endlink
)));
5904 if (flag_huge_objects
)
5905 delta_type_node
= long_integer_type_node
;
5907 delta_type_node
= short_integer_type_node
;
5909 builtin_function ("__builtin_constant_p", default_function_type
,
5910 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5912 builtin_return_address_fndecl
5913 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5914 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5916 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5917 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5919 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5920 BUILT_IN_ALLOCA
, "alloca");
5921 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5922 /* Define alloca, ffs as builtins.
5923 Declare _exit just to mark it as volatile. */
5924 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5926 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5927 BUILT_IN_ALLOCA
, NULL_PTR
);
5928 /* Suppress error if redefined as a non-function. */
5929 DECL_BUILT_IN_NONANSI (temp
) = 1;
5930 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5931 /* Suppress error if redefined as a non-function. */
5932 DECL_BUILT_IN_NONANSI (temp
) = 1;
5933 temp
= builtin_function ("_exit", void_ftype_int
,
5934 NOT_BUILT_IN
, NULL_PTR
);
5935 TREE_THIS_VOLATILE (temp
) = 1;
5936 TREE_SIDE_EFFECTS (temp
) = 1;
5937 /* Suppress error if redefined as a non-function. */
5938 DECL_BUILT_IN_NONANSI (temp
) = 1;
5941 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5942 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5944 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5946 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5948 builtin_function ("__builtin_labs", long_ftype_long
,
5949 BUILT_IN_LABS
, NULL_PTR
);
5950 builtin_function ("__builtin_saveregs", ptr_ftype
,
5951 BUILT_IN_SAVEREGS
, NULL_PTR
);
5952 builtin_function ("__builtin_classify_type", default_function_type
,
5953 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5954 builtin_function ("__builtin_next_arg", ptr_ftype
,
5955 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5956 builtin_function ("__builtin_args_info", int_ftype_int
,
5957 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5958 builtin_function ("__builtin_setjmp",
5959 build_function_type (integer_type_node
,
5960 tree_cons (NULL_TREE
, ptr_type_node
,
5962 BUILT_IN_SETJMP
, NULL_PTR
);
5963 builtin_function ("__builtin_longjmp",
5964 build_function_type (integer_type_node
,
5965 tree_cons (NULL_TREE
, ptr_type_node
,
5966 tree_cons (NULL_TREE
,
5969 BUILT_IN_LONGJMP
, NULL_PTR
);
5971 /* Untyped call and return. */
5972 builtin_function ("__builtin_apply_args", ptr_ftype
,
5973 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5975 temp
= tree_cons (NULL_TREE
,
5976 build_pointer_type (build_function_type (void_type_node
,
5978 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
5979 builtin_function ("__builtin_apply",
5980 build_function_type (ptr_type_node
, temp
),
5981 BUILT_IN_APPLY
, NULL_PTR
);
5982 builtin_function ("__builtin_return", void_ftype_ptr
,
5983 BUILT_IN_RETURN
, NULL_PTR
);
5985 /* Currently under experimentation. */
5986 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5987 BUILT_IN_MEMCPY
, "memcpy");
5988 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5989 BUILT_IN_MEMCMP
, "memcmp");
5990 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5991 BUILT_IN_STRCMP
, "strcmp");
5992 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5993 BUILT_IN_STRCPY
, "strcpy");
5994 builtin_function ("__builtin_strlen", strlen_ftype
,
5995 BUILT_IN_STRLEN
, "strlen");
5996 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5997 BUILT_IN_FSQRT
, "sqrtf");
5998 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5999 BUILT_IN_FSQRT
, NULL_PTR
);
6000 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
6001 BUILT_IN_FSQRT
, "sqrtl");
6002 builtin_function ("__builtin_sinf", float_ftype_float
,
6003 BUILT_IN_SIN
, "sinf");
6004 builtin_function ("__builtin_sin", double_ftype_double
,
6005 BUILT_IN_SIN
, "sin");
6006 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
6007 BUILT_IN_SIN
, "sinl");
6008 builtin_function ("__builtin_cosf", float_ftype_float
,
6009 BUILT_IN_COS
, "cosf");
6010 builtin_function ("__builtin_cos", double_ftype_double
,
6011 BUILT_IN_COS
, "cos");
6012 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
6013 BUILT_IN_COS
, "cosl");
6015 if (!flag_no_builtin
)
6017 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
6018 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
6019 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
6020 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
6021 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
6023 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
6024 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
6026 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
6028 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
6030 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
6031 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
6032 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
6033 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
6035 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
6036 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
6037 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
6038 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
6039 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
6040 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
6042 /* Declare these functions volatile
6043 to avoid spurious "control drops through" warnings. */
6044 temp
= builtin_function ("abort", void_ftype
,
6045 NOT_BUILT_IN
, NULL_PTR
);
6046 TREE_THIS_VOLATILE (temp
) = 1;
6047 TREE_SIDE_EFFECTS (temp
) = 1;
6048 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6050 DECL_BUILT_IN_NONANSI (temp
) = 1;
6051 temp
= builtin_function ("exit", void_ftype_int
,
6052 NOT_BUILT_IN
, NULL_PTR
);
6053 TREE_THIS_VOLATILE (temp
) = 1;
6054 TREE_SIDE_EFFECTS (temp
) = 1;
6055 DECL_BUILT_IN_NONANSI (temp
) = 1;
6059 /* Support for these has not been written in either expand_builtin
6060 or build_function_call. */
6061 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6062 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6063 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6065 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6067 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6068 BUILT_IN_FMOD
, NULL_PTR
);
6069 builtin_function ("__builtin_frem", double_ftype_double_double
,
6070 BUILT_IN_FREM
, NULL_PTR
);
6071 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6072 BUILT_IN_MEMSET
, NULL_PTR
);
6073 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6075 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6079 /* C++ extensions */
6081 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6082 record_unknown_type (unknown_type_node
, "unknown type");
6084 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6085 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6087 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6089 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6091 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6092 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6094 /* This is for handling opaque types in signatures. */
6095 opaque_type_node
= copy_node (ptr_type_node
);
6096 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6097 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6099 /* This is special for C++ so functions can be overloaded. */
6101 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6102 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6103 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6104 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6106 = TREE_UNSIGNED (wchar_type_node
)
6107 ? unsigned_wchar_type_node
6108 : signed_wchar_type_node
;
6109 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6111 /* Artificial declaration of wchar_t -- can be bashed */
6112 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6114 pushdecl (wchar_decl_node
);
6116 /* This is for wide string constants. */
6117 wchar_array_type_node
6118 = build_array_type (wchar_type_node
, array_domain_type
);
6120 if (flag_vtable_thunks
)
6122 /* Make sure we get a unique function type, so we can give
6123 its pointer type a name. (This wins for gdb.) */
6124 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6125 TREE_TYPE (vfunc_type
) = integer_type_node
;
6126 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6127 layout_type (vfunc_type
);
6129 vtable_entry_type
= build_pointer_type (vfunc_type
);
6133 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6134 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6136 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6138 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6140 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6143 /* Make this part of an invisible union. */
6144 fields
[3] = copy_node (fields
[2]);
6145 TREE_TYPE (fields
[3]) = delta_type_node
;
6146 DECL_NAME (fields
[3]) = delta2_identifier
;
6147 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6148 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6149 TREE_UNSIGNED (fields
[3]) = 0;
6150 TREE_CHAIN (fields
[2]) = fields
[3];
6151 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6153 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6156 = build_array_type (vtable_entry_type
, NULL_TREE
);
6157 layout_type (vtbl_type_node
);
6158 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6159 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6160 vtbl_ptr_type_node
= build_pointer_type (vtable_entry_type
);
6161 layout_type (vtbl_ptr_type_node
);
6162 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_ptr_type_node
);
6164 /* Simplify life by making a "sigtable_entry_type". Give its
6165 fields names so that the debugger can use them. */
6167 if (flag_handle_signatures
)
6169 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6170 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6172 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6174 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6176 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6178 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6181 /* Set the alignment to the max of the alignment of ptr_type_node and
6182 delta_type_node. Double alignment wastes a word on the Sparc. */
6183 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6184 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6188 /* Make this part of an invisible union. */
6189 fields
[5] = copy_node (fields
[4]);
6190 TREE_TYPE (fields
[5]) = delta_type_node
;
6191 DECL_NAME (fields
[5]) = vt_off_identifier
;
6192 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6193 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6194 TREE_UNSIGNED (fields
[5]) = 0;
6195 TREE_CHAIN (fields
[4]) = fields
[5];
6197 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6198 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6201 std_node
= build_decl (NAMESPACE_DECL
,
6202 get_identifier (flag_honor_std
? "fake std":"std"),
6204 pushdecl (std_node
);
6206 global_type_node
= make_node (LANG_TYPE
);
6207 record_unknown_type (global_type_node
, "global type");
6210 current_lang_name
= lang_name_cplusplus
;
6213 tree bad_alloc_type_node
, newtype
, deltype
;
6215 push_namespace (get_identifier ("std"));
6216 bad_alloc_type_node
= xref_tag
6217 (class_type_node
, get_identifier ("bad_alloc"), 1);
6220 newtype
= build_exception_variant
6221 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6222 deltype
= build_exception_variant
6223 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6224 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6225 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6226 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6227 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6231 = define_function ("__pure_virtual", void_ftype
,
6232 NOT_BUILT_IN
, 0, 0);
6234 /* Perform other language dependent initializations. */
6235 init_class_processing ();
6236 init_init_processing ();
6237 init_search_processing ();
6239 init_rtti_processing ();
6241 if (flag_exceptions
)
6242 init_exception_processing ();
6245 flag_inline_functions
= 0;
6248 if (! supports_one_only ())
6251 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6252 declare_function_name ();
6254 /* Prepare to check format strings against argument lists. */
6255 init_function_format_info ();
6257 /* Show we use EH for cleanups. */
6258 using_eh_for_cleanups ();
6260 print_error_function
= lang_print_error_function
;
6261 lang_get_alias_set
= &c_get_alias_set
;
6263 /* Maintain consistency. Perhaps we should just complain if they
6264 say -fwritable-strings? */
6265 if (flag_writable_strings
)
6266 flag_const_strings
= 0;
6269 /* Function to print any language-specific context for an error message. */
6272 lang_print_error_function (file
)
6275 default_print_error_function (file
);
6276 maybe_print_template_context ();
6279 /* Make a definition for a builtin function named NAME and whose data type
6280 is TYPE. TYPE should be a function type with argument types.
6281 FUNCTION_CODE tells later passes how to compile calls to this function.
6282 See tree.h for its possible values.
6284 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6285 the name to be called if we can't opencode the function. */
6288 define_function (name
, type
, function_code
, pfn
, library_name
)
6291 enum built_in_function function_code
;
6292 void (*pfn
) PROTO((tree
));
6295 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6296 DECL_EXTERNAL (decl
) = 1;
6297 TREE_PUBLIC (decl
) = 1;
6298 DECL_ARTIFICIAL (decl
) = 1;
6300 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6301 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6303 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6304 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6305 function in the namespace. */
6306 if (pfn
) (*pfn
) (decl
);
6308 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6309 make_function_rtl (decl
);
6310 if (function_code
!= NOT_BUILT_IN
)
6312 DECL_BUILT_IN (decl
) = 1;
6313 DECL_FUNCTION_CODE (decl
) = function_code
;
6318 /* When we call finish_struct for an anonymous union, we create
6319 default copy constructors and such. But, an anonymous union
6320 shouldn't have such things; this function undoes the damage to the
6321 anonymous union type T.
6323 (The reason that we create the synthesized methods is that we don't
6324 distinguish `union { int i; }' from `typedef union { int i; } U'.
6325 The first is an anonymous union; the second is just an ordinary
6329 fixup_anonymous_union (t
)
6334 /* Wipe out memory of synthesized methods */
6335 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6336 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6337 TYPE_HAS_INIT_REF (t
) = 0;
6338 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6339 TYPE_HAS_ASSIGN_REF (t
) = 0;
6340 TYPE_HAS_ASSIGNMENT (t
) = 0;
6341 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6343 /* Splice the implicitly generated functions out of the TYPE_METHODS
6345 q
= &TYPE_METHODS (t
);
6348 if (DECL_ARTIFICIAL (*q
))
6349 *q
= TREE_CHAIN (*q
);
6351 q
= &TREE_CHAIN (*q
);
6354 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6355 function members. */
6356 if (TYPE_METHODS (t
))
6357 error ("an anonymous union cannot have function members");
6360 /* Called when a declaration is seen that contains no names to declare.
6361 If its type is a reference to a structure, union or enum inherited
6362 from a containing scope, shadow that tag name for the current scope
6363 with a forward reference.
6364 If its type defines a new named structure or union
6365 or defines an enum, it is valid but we need not do anything here.
6366 Otherwise, it is an error.
6368 C++: may have to grok the declspecs to learn about static,
6369 complain for anonymous unions. */
6372 shadow_tag (declspecs
)
6376 tree ob_modifier
= NULL_TREE
;
6378 register enum tree_code code
, ok_code
= ERROR_MARK
;
6379 register tree t
= NULL_TREE
;
6381 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6383 register tree value
= TREE_VALUE (link
);
6385 code
= TREE_CODE (value
);
6386 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6388 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6390 maybe_process_partial_specialization (value
);
6396 else if (value
== ridpointers
[(int) RID_STATIC
]
6397 || value
== ridpointers
[(int) RID_EXTERN
]
6398 || value
== ridpointers
[(int) RID_AUTO
]
6399 || value
== ridpointers
[(int) RID_REGISTER
]
6400 || value
== ridpointers
[(int) RID_INLINE
]
6401 || value
== ridpointers
[(int) RID_VIRTUAL
]
6402 || value
== ridpointers
[(int) RID_EXPLICIT
])
6403 ob_modifier
= value
;
6406 /* This is where the variables in an anonymous union are
6407 declared. An anonymous union declaration looks like:
6409 because there is no declarator after the union, the parser
6410 sends that declaration here. */
6411 if (ok_code
== UNION_TYPE
6413 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6414 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6415 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6416 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6418 fixup_anonymous_union (t
);
6420 if (TYPE_FIELDS (t
))
6422 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6424 finish_anon_union (decl
);
6429 /* Anonymous unions are objects, that's why we only check for
6430 inappropriate specifiers in this branch. */
6434 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6435 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6436 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6437 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6438 cp_error ("`%D' can only be specified for constructors",
6441 cp_error ("`%D' can only be specified for objects and functions",
6446 cp_error ("abstract declarator used as declaration");
6447 else if (found_tag
> 1)
6448 pedwarn ("multiple types in one declaration");
6452 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6455 groktypename (typename
)
6458 if (TREE_CODE (typename
) != TREE_LIST
)
6460 return grokdeclarator (TREE_VALUE (typename
),
6461 TREE_PURPOSE (typename
),
6462 TYPENAME
, 0, NULL_TREE
);
6465 /* Decode a declarator in an ordinary declaration or data definition.
6466 This is called as soon as the type information and variable name
6467 have been parsed, before parsing the initializer if any.
6468 Here we create the ..._DECL node, fill in its type,
6469 and put it on the list of decls for the current context.
6470 The ..._DECL node is returned as the value.
6472 Exception: for arrays where the length is not specified,
6473 the type is left null, to be filled in by `cp_finish_decl'.
6475 Function definitions do not come here; they go to start_function
6476 instead. However, external and forward declarations of functions
6477 do go through here. Structure field declarations are done by
6478 grokfield and not through here. */
6480 /* Set this to zero to debug not using the temporary obstack
6481 to parse initializers. */
6482 int debug_temp_inits
= 1;
6485 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6486 tree declarator
, declspecs
;
6488 tree attributes
, prefix_attributes
;
6491 register tree type
, tem
;
6493 extern int have_extern_spec
;
6494 extern int used_extern_spec
;
6497 /* See code below that used this. */
6498 int init_written
= initialized
;
6501 /* This should only be done once on the top most decl. */
6502 if (have_extern_spec
&& !used_extern_spec
)
6504 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6506 used_extern_spec
= 1;
6509 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6511 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6514 type
= TREE_TYPE (decl
);
6516 /* Don't lose if destructors must be executed at file-level. */
6517 if (! processing_template_decl
&& TREE_STATIC (decl
)
6518 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6519 && !TREE_PERMANENT (decl
))
6521 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6522 decl
= copy_node (decl
);
6523 if (TREE_CODE (type
) == ARRAY_TYPE
)
6525 tree itype
= TYPE_DOMAIN (type
);
6526 if (itype
&& ! TREE_PERMANENT (itype
))
6528 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6529 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6530 TREE_TYPE (decl
) = type
;
6537 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6538 ? DECL_CLASS_CONTEXT (decl
)
6539 : DECL_CONTEXT (decl
);
6541 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6542 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6544 /* When parsing the initializer, lookup should use the object's
6546 push_decl_namespace (context
);
6549 /* We are only interested in class contexts, later. */
6550 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6551 context
= NULL_TREE
;
6554 /* Is it valid for this decl to have an initializer at all?
6555 If not, set INITIALIZED to zero, which will indirectly
6556 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6557 switch (TREE_CODE (decl
))
6560 /* typedef foo = bar means give foo the same type as bar.
6561 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6562 Any other case of an initialization in a TYPE_DECL is an error. */
6563 if (pedantic
|| list_length (declspecs
) > 1)
6565 cp_error ("typedef `%D' is initialized", decl
);
6571 cp_error ("function `%#D' is initialized like a variable", decl
);
6576 if (! processing_template_decl
)
6578 if (type
!= error_mark_node
)
6580 if (TYPE_SIZE (type
) != NULL_TREE
6581 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6584 ("variable-sized object `%D' may not be initialized",
6589 if (TREE_CODE (type
) == ARRAY_TYPE
6590 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6593 ("elements of array `%#D' have incomplete type", decl
);
6602 if (! toplevel_bindings_p ()
6603 && DECL_EXTERNAL (decl
))
6604 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6606 DECL_EXTERNAL (decl
) = 0;
6607 if (toplevel_bindings_p ())
6608 TREE_STATIC (decl
) = 1;
6610 /* Tell `pushdecl' this is an initialized decl
6611 even though we don't yet have the initializer expression.
6612 Also tell `cp_finish_decl' it may store the real initializer. */
6613 DECL_INITIAL (decl
) = error_mark_node
;
6616 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6618 if (TREE_CODE (decl
) == VAR_DECL
)
6620 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6621 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6622 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6625 if (DECL_CONTEXT (field
) != context
)
6627 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6628 DECL_CONTEXT (field
), DECL_NAME (decl
),
6629 context
, DECL_NAME (decl
));
6630 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6632 /* Static data member are tricky; an in-class initialization
6633 still doesn't provide a definition, so the in-class
6634 declaration will have DECL_EXTERNAL set, but will have an
6635 initialization. Thus, duplicate_decls won't warn
6636 about this situation, and so we check here. */
6637 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6638 cp_error ("duplicate initialization of %D", decl
);
6639 if (duplicate_decls (decl
, field
))
6645 tree field
= check_classfn (context
, decl
);
6646 if (field
&& duplicate_decls (decl
, field
))
6650 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6651 DECL_IN_AGGR_P (decl
) = 0;
6652 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6653 || CLASSTYPE_USE_TEMPLATE (context
))
6654 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6656 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6657 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6660 pushclass (context
, 2);
6663 #ifdef SET_DEFAULT_DECL_ATTRIBUTES
6664 SET_DEFAULT_DECL_ATTRIBUTES (decl
, attributes
);
6667 /* Set attributes here so if duplicate decl, will have proper attributes. */
6668 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6670 /* Add this decl to the current binding level, but not if it
6671 comes from another scope, e.g. a static member variable.
6672 TEM may equal DECL or it may be a previous decl of the same name. */
6674 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6675 /* Definitions of namespace members outside their namespace are
6677 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6678 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6679 || TREE_CODE (type
) == LANG_TYPE
6680 /* The declaration of template specializations does not affect
6681 the functions available for overload resolution, so we do not
6683 || (TREE_CODE (decl
) == FUNCTION_DECL
6684 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6687 tem
= pushdecl (decl
);
6689 if (processing_template_decl
)
6691 if (! current_function_decl
)
6692 tem
= push_template_decl (tem
);
6693 else if (minimal_parse_mode
)
6695 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6696 copy_to_permanent (declspecs
),
6701 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6702 /* Tell the back-end to use or not use .common as appropriate. If we say
6703 -fconserve-space, we want this to save .data space, at the expense of
6704 wrong semantics. If we say -fno-conserve-space, we want this to
6705 produce errors about redefs; to do this we force variables into the
6707 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6710 if (! processing_template_decl
)
6713 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6714 push_obstacks_nochange ();
6717 /* We have no way of knowing whether the initializer will need to be
6718 evaluated at run-time or not until we've parsed it, so let's just put
6719 it in the permanent obstack. (jason) */
6721 && ! (TREE_CODE (tem
) == PARM_DECL
6722 || (TREE_READONLY (tem
)
6723 && (TREE_CODE (tem
) == VAR_DECL
6724 || TREE_CODE (tem
) == FIELD_DECL
))))
6726 /* When parsing and digesting the initializer,
6727 use temporary storage. Do this even if we will ignore the value. */
6728 if (toplevel_bindings_p () && debug_temp_inits
)
6730 if (processing_template_decl
6731 || TYPE_NEEDS_CONSTRUCTING (type
)
6732 || TREE_CODE (type
) == REFERENCE_TYPE
)
6733 /* In this case, the initializer must lay down in permanent
6734 storage, since it will be saved until `finish_file' is run. */
6737 temporary_allocation ();
6749 tree type
= TREE_TYPE (decl
);
6750 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6752 /* If this type of object needs a cleanup, and control may
6753 jump past it, make a new binding level so that it is cleaned
6754 up only when it is initialized first. */
6755 if (TYPE_NEEDS_DESTRUCTOR (type
)
6756 && current_binding_level
->more_cleanups_ok
== 0)
6757 pushlevel_temporary (1);
6760 /* Is it valid for this decl to have an initializer at all?
6761 If not, set INITIALIZED to zero, which will indirectly
6762 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6764 /* Don't allow initializations for incomplete types except for
6765 arrays which might be completed by the initialization. */
6766 if (type
== error_mark_node
)
6767 ; /* Don't complain again. */
6768 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6769 ; /* A complete type is ok. */
6770 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6772 cp_error ("variable `%#D' has initializer but incomplete type",
6775 type
= TREE_TYPE (decl
) = error_mark_node
;
6777 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6779 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6780 cp_error ("elements of array `%#D' have incomplete type", decl
);
6781 /* else we already gave an error in start_decl. */
6787 && TREE_CODE (decl
) != TYPE_DECL
6788 && TREE_CODE (decl
) != TEMPLATE_DECL
6789 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6791 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6792 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6794 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6796 /* Change the type so that assemble_variable will give
6797 DECL an rtl we can live with: (mem (const_int 0)). */
6798 type
= TREE_TYPE (decl
) = error_mark_node
;
6802 /* If any base type in the hierarchy of TYPE needs a constructor,
6803 then we set initialized to 1. This way any nodes which are
6804 created for the purposes of initializing this aggregate
6805 will live as long as it does. This is necessary for global
6806 aggregates which do not have their initializers processed until
6807 the end of the file. */
6808 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6813 /* We don't do this yet for GNU C++. */
6814 /* For a local variable, define the RTL now. */
6815 if (! toplevel_bindings_p ()
6816 /* But not if this is a duplicate decl
6817 and we preserved the rtl from the previous one
6818 (which may or may not happen). */
6819 && DECL_RTL (tem
) == NULL_RTX
)
6821 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6823 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6824 && DECL_INITIAL (tem
) != NULL_TREE
)
6830 DECL_INITIAL (decl
) = NULL_TREE
;
6833 /* Handle initialization of references.
6834 These three arguments are from `cp_finish_decl', and have the
6835 same meaning here that they do there.
6837 Quotes on semantics can be found in ARM 8.4.3. */
6840 grok_reference_init (decl
, type
, init
)
6841 tree decl
, type
, init
;
6845 if (init
== NULL_TREE
)
6847 if ((DECL_LANG_SPECIFIC (decl
) == 0
6848 || DECL_IN_AGGR_P (decl
) == 0)
6849 && ! DECL_THIS_EXTERN (decl
))
6851 cp_error ("`%D' declared as reference but not initialized", decl
);
6852 if (TREE_CODE (decl
) == VAR_DECL
)
6853 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6858 if (init
== error_mark_node
)
6861 if (TREE_CODE (type
) == REFERENCE_TYPE
6862 && TREE_CODE (init
) == CONSTRUCTOR
)
6864 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6868 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6869 /* decay_conversion is probably wrong for references to functions. */
6870 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6872 if (TREE_CODE (init
) == TREE_LIST
)
6873 init
= build_compound_expr (init
);
6875 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6876 init
= convert_from_reference (init
);
6878 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6879 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6881 /* Note: default conversion is only called in very special cases. */
6882 init
= default_conversion (init
);
6885 tmp
= convert_to_reference
6886 (type
, init
, CONV_IMPLICIT
,
6887 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6889 if (tmp
== error_mark_node
)
6891 else if (tmp
!= NULL_TREE
)
6894 DECL_INITIAL (decl
) = save_expr (init
);
6898 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6902 /* ?? Can this be optimized in some cases to
6903 hand back the DECL_INITIAL slot?? */
6904 if (TYPE_SIZE (TREE_TYPE (type
)))
6906 init
= convert_from_reference (decl
);
6907 if (TREE_PERMANENT (decl
))
6908 init
= copy_to_permanent (init
);
6909 SET_DECL_REFERENCE_SLOT (decl
, init
);
6912 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6914 expand_static_init (decl
, DECL_INITIAL (decl
));
6915 DECL_INITIAL (decl
) = NULL_TREE
;
6920 if (TREE_CODE (decl
) == VAR_DECL
)
6921 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6925 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6926 mucking with forces it does not comprehend (i.e. initialization with a
6927 constructor). If we are at global scope and won't go into COMMON, fill
6928 it in with a dummy CONSTRUCTOR to force the variable into .data;
6929 otherwise we can use error_mark_node. */
6932 obscure_complex_init (decl
, init
)
6935 if (! flag_no_inline
&& TREE_STATIC (decl
))
6937 if (extract_init (decl
, init
))
6941 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6942 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6943 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6947 DECL_INITIAL (decl
) = error_mark_node
;
6952 /* Finish processing of a declaration;
6953 install its line number and initial value.
6954 If the length of an array type is not known before,
6955 it must be determined now, from the initial value, or it is an error.
6957 Call `pop_obstacks' iff NEED_POP is nonzero.
6959 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6960 for aggregates that have constructors alive on the permanent obstack,
6961 so that the global initializing functions can be written at the end.
6963 INIT0 holds the value of an initializer that should be allowed to escape
6966 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6967 if the (init) syntax was used.
6969 For functions that take default parameters, DECL points to its
6970 "maximal" instantiation. `cp_finish_decl' must then also declared its
6971 subsequently lower and lower forms of instantiation, checking for
6972 ambiguity as it goes. This can be sped up later. */
6975 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6982 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
6984 int temporary
= allocation_temporary_p ();
6985 char *asmspec
= NULL
;
6986 int was_readonly
= 0;
6987 int already_used
= 0;
6989 /* If this is 0, then we did not change obstacks. */
6993 error ("assignment (not initialization) in declaration");
6997 /* If a name was specified, get the string. */
6999 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
7001 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
7003 cp_error ("Cannot initialize `%D' to namespace `%D'",
7008 if (TREE_CODE (decl
) == VAR_DECL
7009 && DECL_CONTEXT (decl
)
7010 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
7011 && DECL_CONTEXT (decl
) != current_namespace
7014 /* Leave the namespace of the object. */
7015 pop_decl_namespace ();
7018 /* If the type of the thing we are declaring either has
7019 a constructor, or has a virtual function table pointer,
7020 AND its initialization was accepted by `start_decl',
7021 then we stayed on the permanent obstack through the
7022 declaration, otherwise, changed obstacks as GCC would. */
7024 type
= TREE_TYPE (decl
);
7026 if (type
== error_mark_node
)
7028 if (toplevel_bindings_p () && temporary
)
7029 end_temporary_allocation ();
7034 if (processing_template_decl
)
7036 if (init
&& DECL_INITIAL (decl
))
7037 DECL_INITIAL (decl
) = init
;
7038 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
7040 tree stmt
= DECL_VINDEX (decl
);
7041 /* If the decl is declaring a member of a local class (in a
7042 template function), the DECL_VINDEX will either be NULL,
7043 or it will be an actual virtual function index, not a
7045 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
7047 DECL_VINDEX (decl
) = NULL_TREE
;
7048 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
7055 /* Take care of TYPE_DECLs up front. */
7056 if (TREE_CODE (decl
) == TYPE_DECL
)
7058 if (init
&& DECL_INITIAL (decl
))
7060 /* typedef foo = bar; store the type of bar as the type of foo. */
7061 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
7062 DECL_INITIAL (decl
) = init
= NULL_TREE
;
7064 if (type
!= error_mark_node
7065 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
7067 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
7068 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
7069 set_identifier_type_value (DECL_NAME (decl
), type
);
7070 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7072 GNU_xref_decl (current_function_decl
, decl
);
7074 /* If we have installed this as the canonical typedef for this
7075 type, and that type has not been defined yet, delay emitting
7076 the debug information for it, as we will emit it later. */
7077 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7078 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7079 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7081 rest_of_decl_compilation (decl
, NULL_PTR
,
7082 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7085 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7087 ttype
= target_type (type
);
7090 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7091 && TYPE_NEEDS_CONSTRUCTING (type
))
7094 /* Currently, GNU C++ puts constants in text space, making them
7095 impossible to initialize. In the future, one would hope for
7096 an operating system which understood the difference between
7097 initialization and the running of a program. */
7099 TREE_READONLY (decl
) = 0;
7102 if (TREE_CODE (decl
) == FIELD_DECL
)
7104 if (init
&& init
!= error_mark_node
)
7105 my_friendly_assert (TREE_PERMANENT (init
), 147);
7109 /* This must override the asm specifier which was placed
7110 by grokclassfn. Lay this out fresh. */
7111 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7112 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7113 make_decl_rtl (decl
, asmspec
, 0);
7116 /* If `start_decl' didn't like having an initialization, ignore it now. */
7117 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7119 else if (DECL_EXTERNAL (decl
))
7121 else if (TREE_CODE (type
) == REFERENCE_TYPE
7122 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7124 if (TREE_STATIC (decl
))
7125 make_decl_rtl (decl
, NULL_PTR
,
7126 toplevel_bindings_p ()
7127 || pseudo_global_level_p ());
7128 grok_reference_init (decl
, type
, init
);
7132 GNU_xref_decl (current_function_decl
, decl
);
7134 if (TREE_CODE (decl
) == FIELD_DECL
)
7136 else if (TREE_CODE (decl
) == CONST_DECL
)
7138 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7140 DECL_INITIAL (decl
) = init
;
7142 /* This will keep us from needing to worry about our obstacks. */
7143 my_friendly_assert (init
!= NULL_TREE
, 149);
7148 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7150 if (TREE_CODE (type
) == ARRAY_TYPE
)
7151 init
= digest_init (type
, init
, (tree
*) 0);
7152 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7154 if (TYPE_NON_AGGREGATE_CLASS (type
))
7156 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7158 init
= error_mark_node
;
7161 goto dont_use_constructor
;
7166 dont_use_constructor
:
7167 if (TREE_CODE (init
) != TREE_VEC
)
7168 init
= store_init_value (decl
, init
);
7172 /* We must hide the initializer so that expand_decl
7173 won't try to do something it does not understand. */
7174 init
= obscure_complex_init (decl
, init
);
7176 else if (DECL_EXTERNAL (decl
))
7178 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7179 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7182 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7183 ctype
= TREE_TYPE (ctype
);
7184 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7186 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7187 cp_error ("structure `%D' with uninitialized const members", decl
);
7188 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7189 cp_error ("structure `%D' with uninitialized reference members",
7193 if (TREE_CODE (decl
) == VAR_DECL
7194 && !DECL_INITIAL (decl
)
7195 && !TYPE_NEEDS_CONSTRUCTING (type
)
7196 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7197 cp_error ("uninitialized const `%D'", decl
);
7199 if (TYPE_SIZE (type
) != NULL_TREE
7200 && TYPE_NEEDS_CONSTRUCTING (type
))
7201 init
= obscure_complex_init (decl
, NULL_TREE
);
7203 else if (TREE_CODE (decl
) == VAR_DECL
7204 && TREE_CODE (type
) != REFERENCE_TYPE
7205 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7207 /* ``Unless explicitly declared extern, a const object does not have
7208 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7209 However, if it's `const int foo = 1; const int foo;', don't complain
7210 about the second decl, since it does have an initializer before.
7211 We deliberately don't complain about arrays, because they're
7212 supposed to be initialized by a constructor. */
7213 if (! DECL_INITIAL (decl
)
7214 && TREE_CODE (type
) != ARRAY_TYPE
7215 && (!pedantic
|| !current_class_type
))
7216 cp_error ("uninitialized const `%#D'", decl
);
7219 /* For top-level declaration, the initial value was read in
7220 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7221 must go in the permanent obstack; but don't discard the
7222 temporary data yet. */
7224 if (toplevel_bindings_p () && temporary
)
7225 end_temporary_allocation ();
7227 /* Deduce size of array from initialization, if not already known. */
7229 if (TREE_CODE (type
) == ARRAY_TYPE
7230 && TYPE_DOMAIN (type
) == NULL_TREE
7231 && TREE_CODE (decl
) != TYPE_DECL
)
7234 = (TREE_STATIC (decl
)
7235 /* Even if pedantic, an external linkage array
7236 may have incomplete type at first. */
7237 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7238 : !DECL_EXTERNAL (decl
));
7239 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7240 int failure
= complete_array_type (type
, initializer
, do_default
);
7243 cp_error ("initializer fails to determine size of `%D'", decl
);
7248 cp_error ("array size missing in `%D'", decl
);
7249 /* If a `static' var's size isn't known, make it extern as
7250 well as static, so it does not get allocated. If it's not
7251 `static', then don't mark it extern; finish_incomplete_decl
7252 will give it a default size and it will get allocated. */
7253 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7254 DECL_EXTERNAL (decl
) = 1;
7257 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7258 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7260 cp_error ("zero-size array `%D'", decl
);
7262 layout_decl (decl
, 0);
7265 if (TREE_CODE (decl
) == VAR_DECL
)
7267 if (DECL_SIZE (decl
) == NULL_TREE
7268 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7269 layout_decl (decl
, 0);
7271 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7273 /* A static variable with an incomplete type:
7274 that is an error if it is initialized.
7275 Otherwise, let it through, but if it is not `extern'
7276 then it may cause an error message later. */
7277 if (DECL_INITIAL (decl
) != NULL_TREE
)
7278 cp_error ("storage size of `%D' isn't known", decl
);
7281 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7283 /* An automatic variable with an incomplete type: that is an error.
7284 Don't talk about array types here, since we took care of that
7285 message in grokdeclarator. */
7286 cp_error ("storage size of `%D' isn't known", decl
);
7287 TREE_TYPE (decl
) = error_mark_node
;
7289 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7290 /* Let debugger know it should output info for this type. */
7291 note_debug_info_needed (ttype
);
7293 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7294 note_debug_info_needed (DECL_CONTEXT (decl
));
7296 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7297 && DECL_SIZE (decl
) != NULL_TREE
7298 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7300 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7301 constant_expression_warning (DECL_SIZE (decl
));
7303 cp_error ("storage size of `%D' isn't constant", decl
);
7306 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7307 /* Cleanups for static variables are handled by `finish_file'. */
7308 && ! TREE_STATIC (decl
))
7310 int yes
= suspend_momentary ();
7311 cleanup
= maybe_build_cleanup (decl
);
7312 resume_momentary (yes
);
7315 /* PARM_DECLs get cleanups, too. */
7316 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7319 end_temporary_allocation ();
7320 cleanup
= maybe_build_cleanup (decl
);
7322 resume_temporary_allocation ();
7325 /* Output the assembler code and/or RTL code for variables and functions,
7326 unless the type is an undefined structure or union.
7327 If not, it will get done when the type is completed. */
7329 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7331 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7332 || TREE_CODE (decl
) == RESULT_DECL
)
7334 /* ??? FIXME: What about nested classes? */
7335 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7337 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7338 && allocation_temporary_p ());
7341 end_temporary_allocation ();
7343 /* Static data in a function with comdat linkage also has comdat
7345 if (TREE_CODE (decl
) == VAR_DECL
7346 && TREE_STATIC (decl
)
7347 /* Don't mess with __FUNCTION__. */
7348 && ! TREE_ASM_WRITTEN (decl
)
7349 && current_function_decl
7350 && DECL_CONTEXT (decl
) == current_function_decl
7351 && (DECL_THIS_INLINE (current_function_decl
)
7352 || DECL_TEMPLATE_INSTANTIATION (current_function_decl
))
7353 && TREE_PUBLIC (current_function_decl
))
7355 /* Rather than try to get this right with inlining, we suppress
7356 inlining of such functions. */
7357 current_function_cannot_inline
7358 = "function with static variable cannot be inline";
7360 /* If flag_weak, we don't need to mess with this, as we can just
7361 make the function weak, and let it refer to its unique local
7362 copy. This works because we don't allow the function to be
7366 if (DECL_INTERFACE_KNOWN (current_function_decl
))
7368 TREE_PUBLIC (decl
) = 1;
7369 DECL_EXTERNAL (decl
) = DECL_EXTERNAL (current_function_decl
);
7371 else if (DECL_INITIAL (decl
) == NULL_TREE
7372 || DECL_INITIAL (decl
) == error_mark_node
)
7374 TREE_PUBLIC (decl
) = 1;
7375 DECL_COMMON (decl
) = 1;
7377 /* else we lose. We can only do this if we can use common,
7378 which we can't if it has been initialized. */
7380 if (TREE_PUBLIC (decl
))
7381 DECL_ASSEMBLER_NAME (decl
)
7382 = build_static_name (current_function_decl
, DECL_NAME (decl
));
7383 else if (! DECL_ARTIFICIAL (decl
))
7385 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl
);
7386 cp_warning_at (" you can work around this by removing the initializer"), decl
;
7391 else if (TREE_CODE (decl
) == VAR_DECL
7392 && DECL_LANG_SPECIFIC (decl
)
7393 && DECL_COMDAT (decl
))
7395 /* Dynamically initialized vars go into common. */
7396 if (DECL_INITIAL (decl
) == NULL_TREE
7397 || DECL_INITIAL (decl
) == error_mark_node
)
7398 DECL_COMMON (decl
) = 1;
7399 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7401 DECL_COMMON (decl
) = 1;
7402 DECL_INITIAL (decl
) = error_mark_node
;
7406 /* Statically initialized vars are weak or comdat, if
7409 make_decl_one_only (decl
);
7412 /* We can't do anything useful; leave vars for explicit
7414 DECL_EXTERNAL (decl
) = 1;
7415 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7420 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7421 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7422 else if (TREE_CODE (decl
) == VAR_DECL
7423 && TREE_READONLY (decl
)
7424 && DECL_INITIAL (decl
) != NULL_TREE
7425 && DECL_INITIAL (decl
) != error_mark_node
7426 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7428 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7431 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7434 && TREE_STATIC (decl
)
7435 && ! TREE_SIDE_EFFECTS (decl
)
7436 && ! TREE_PUBLIC (decl
)
7437 && ! DECL_EXTERNAL (decl
)
7438 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7439 && DECL_MODE (decl
) != BLKmode
)
7441 /* If this variable is really a constant, then fill its DECL_RTL
7442 slot with something which won't take up storage.
7443 If something later should take its address, we can always give
7444 it legitimate RTL at that time. */
7445 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7446 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7447 TREE_ASM_WRITTEN (decl
) = 1;
7449 else if (toplev
&& ! TREE_PUBLIC (decl
))
7451 /* If this is a static const, change its apparent linkage
7452 if it belongs to a #pragma interface. */
7453 if (!interface_unknown
)
7455 TREE_PUBLIC (decl
) = 1;
7456 DECL_EXTERNAL (decl
) = interface_only
;
7458 make_decl_rtl (decl
, asmspec
, toplev
);
7461 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7463 else if (TREE_CODE (decl
) == VAR_DECL
7464 && DECL_LANG_SPECIFIC (decl
)
7465 && DECL_IN_AGGR_P (decl
))
7467 if (TREE_STATIC (decl
))
7469 if (init
== NULL_TREE
7470 #ifdef DEFAULT_STATIC_DEFS
7471 /* If this code is dead, then users must
7472 explicitly declare static member variables
7473 outside the class def'n as well. */
7474 && TYPE_NEEDS_CONSTRUCTING (type
)
7478 DECL_EXTERNAL (decl
) = 1;
7479 make_decl_rtl (decl
, asmspec
, 1);
7482 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7485 /* Just a constant field. Should not need any rtl. */
7489 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7492 resume_temporary_allocation ();
7494 if (type
!= error_mark_node
7495 && TYPE_LANG_SPECIFIC (type
)
7496 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7497 abstract_virtuals_error (decl
, type
);
7498 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7499 || TREE_CODE (type
) == METHOD_TYPE
)
7500 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7501 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7502 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7504 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7505 signature_error (decl
, type
);
7506 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7507 || TREE_CODE (type
) == METHOD_TYPE
)
7508 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7509 && IS_SIGNATURE (TREE_TYPE (type
)))
7510 signature_error (decl
, TREE_TYPE (type
));
7512 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7514 else if (DECL_EXTERNAL (decl
)
7515 && ! (DECL_LANG_SPECIFIC (decl
)
7516 && DECL_NOT_REALLY_EXTERN (decl
)))
7519 DECL_INITIAL (decl
) = init
;
7521 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7523 /* Cleanups for static variables are handled by `finish_file'. */
7524 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7525 || TYPE_NEEDS_DESTRUCTOR (type
))
7526 expand_static_init (decl
, init
);
7530 /* This is a declared decl which must live until the
7531 end of the binding contour. It may need a cleanup. */
7533 /* Recompute the RTL of a local array now
7534 if it used to be an incomplete type. */
7535 if (was_incomplete
&& ! TREE_STATIC (decl
))
7537 /* If we used it already as memory, it must stay in memory. */
7538 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7539 /* If it's still incomplete now, no init will save it. */
7540 if (DECL_SIZE (decl
) == NULL_TREE
)
7541 DECL_INITIAL (decl
) = NULL_TREE
;
7544 else if (! TREE_ASM_WRITTEN (decl
)
7545 && (TYPE_SIZE (type
) != NULL_TREE
7546 || TREE_CODE (type
) == ARRAY_TYPE
))
7548 /* Do this here, because we did not expand this decl's
7549 rtl in start_decl. */
7550 if (DECL_RTL (decl
) == NULL_RTX
)
7554 /* XXX: Why don't we use decl here? */
7555 /* Ans: Because it was already expanded? */
7556 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7557 cp_error ("parser lost in parsing declaration of `%D'",
7559 /* Cleanup used up here. */
7560 cleanup
= NULL_TREE
;
7564 if (current_binding_level
->is_for_scope
)
7566 struct binding_level
*outer
= current_binding_level
->level_chain
;
7568 /* Check to see if the same name is already bound at
7569 the outer level, either because it was directly declared,
7570 or because a dead for-decl got preserved. In either case,
7571 the code would not have been valid under the ARM
7572 scope rules, so clear is_for_scope for the
7573 current_binding_level.
7575 Otherwise, we need to preserve the temp slot for decl
7576 to last into the outer binding level. */
7578 int handling_dead_for_vars
= 0;
7579 tree link
= outer
->names
;
7580 for (; ; link
= TREE_CHAIN (link
))
7582 if (link
== NULL
&& handling_dead_for_vars
== 0)
7584 link
= outer
->dead_vars_from_for
;
7585 handling_dead_for_vars
= 1;
7589 if (DECL_IN_MEMORY_P (decl
))
7590 preserve_temp_slots (DECL_RTL (decl
));
7593 if (DECL_NAME (link
) == DECL_NAME (decl
))
7595 if (handling_dead_for_vars
)
7598 = purpose_member (DECL_NAME (decl
),
7599 current_binding_level
->shadowed
);
7600 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7601 TREE_VALUE (shadowing
)
7602 = DECL_SHADOWED_FOR_VAR (link
);
7604 current_binding_level
->is_for_scope
= 0;
7610 expand_start_target_temps ();
7612 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7614 /* Compute and store the initial value. */
7615 expand_decl_init (decl
);
7616 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7618 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7620 emit_line_note (DECL_SOURCE_FILE (decl
),
7621 DECL_SOURCE_LINE (decl
));
7622 expand_aggr_init (decl
, init
, flags
);
7625 /* Set this to 0 so we can tell whether an aggregate which
7626 was initialized was ever used. Don't do this if it has a
7627 destructor, so we don't complain about the 'resource
7628 allocation is initialization' idiom. */
7629 /* Now set attribute((unused)) on types so decls of
7630 that type will be marked used. (see TREE_USED, above.)
7631 This avoids the warning problems this particular code
7632 tried to work around. */
7634 if (TYPE_NEEDS_CONSTRUCTING (type
)
7636 && cleanup
== NULL_TREE
7637 && DECL_NAME (decl
))
7638 TREE_USED (decl
) = 0;
7641 TREE_USED (decl
) = 1;
7644 /* Cleanup any temporaries needed for the initial value. */
7645 expand_end_target_temps ();
7647 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7649 /* Store the cleanup, if there was one. */
7652 if (! expand_decl_cleanup (decl
, cleanup
))
7653 cp_error ("parser lost in parsing declaration of `%D'",
7660 /* Undo call to `pushclass' that was done in `start_decl'
7661 due to initialization of qualified member variable.
7662 I.e., Foo::x = 10; */
7664 tree context
= DECL_REAL_CONTEXT (decl
);
7666 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7667 && (TREE_CODE (decl
) == VAR_DECL
7668 /* We also have a pushclass done that we need to undo here
7669 if we're at top level and declare a method. */
7670 || TREE_CODE (decl
) == FUNCTION_DECL
)
7671 /* If size hasn't been set, we're still defining it,
7672 and therefore inside the class body; don't pop
7673 the binding level.. */
7674 && TYPE_SIZE (context
) != NULL_TREE
7675 && context
== current_class_type
)
7682 /* If requested, warn about definitions of large data objects. */
7684 if (warn_larger_than
7685 && ! processing_template_decl
7686 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7687 && !DECL_EXTERNAL (decl
))
7689 register tree decl_size
= DECL_SIZE (decl
);
7691 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7693 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7695 if (units
> larger_than_size
)
7696 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7702 /* Resume permanent allocation, if not within a function. */
7703 /* The corresponding push_obstacks_nochange is in start_decl,
7704 start_method, groktypename, and in grokfield. */
7709 TREE_READONLY (decl
) = 1;
7712 /* This is here for a midend callback from c-common.c */
7715 finish_decl (decl
, init
, asmspec_tree
)
7719 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7723 expand_static_init (decl
, init
)
7727 tree oldstatic
= value_member (decl
, static_aggregates
);
7731 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7732 cp_error ("multiple initializations given for `%D'", decl
);
7734 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7736 /* Emit code to perform this initialization but once. */
7739 /* Remember this information until end of file. */
7740 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7742 /* Emit code to perform this initialization but once. */
7743 temp
= get_temp_name (integer_type_node
, 1);
7744 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7745 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7746 integer_zero_node
, 1), 0);
7747 expand_start_target_temps ();
7749 expand_assignment (temp
, integer_one_node
, 0, 0);
7750 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7751 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7753 expand_aggr_init (decl
, init
, 0);
7754 do_pending_stack_adjust ();
7757 expand_assignment (decl
, init
, 0, 0);
7759 /* Cleanup any temporaries needed for the initial value. */
7760 expand_end_target_temps ();
7762 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7764 tree cleanup
, fcall
;
7765 static tree Atexit
= 0;
7768 tree atexit_fndecl
, PFV
, pfvlist
;
7769 /* Remember this information until end of file. */
7770 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7771 PFV
= build_pointer_type (build_function_type
7772 (void_type_node
, void_list_node
));
7774 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7776 push_lang_context (lang_name_c
);
7778 = builtin_function ("atexit",
7779 build_function_type (void_type_node
,
7781 NOT_BUILT_IN
, NULL_PTR
);
7782 assemble_external (atexit_fndecl
);
7783 Atexit
= default_conversion (atexit_fndecl
);
7784 pop_lang_context ();
7788 cleanup
= start_anon_func ();
7789 expand_expr_stmt (build_cleanup (decl
));
7791 mark_addressable (cleanup
);
7792 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7793 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7794 expand_expr_stmt (fcall
);
7798 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7800 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7801 TREE_STATIC (static_aggregates
) = 1;
7804 /* Resume old (possibly temporary) allocation. */
7809 /* This code takes into account memory allocation
7810 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7811 does not hold for this object, then we must make permanent
7812 the storage currently in the temporary obstack. */
7813 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7814 preserve_initializer ();
7815 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7819 /* Make TYPE a complete type based on INITIAL_VALUE.
7820 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7821 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7824 complete_array_type (type
, initial_value
, do_default
)
7825 tree type
, initial_value
;
7828 register tree maxindex
= NULL_TREE
;
7833 /* Note MAXINDEX is really the maximum index,
7834 one less than the size. */
7835 if (TREE_CODE (initial_value
) == STRING_CST
)
7838 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7839 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7842 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7844 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7845 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7846 for (; elts
; elts
= TREE_CHAIN (elts
))
7848 if (TREE_PURPOSE (elts
))
7849 maxindex
= TREE_PURPOSE (elts
);
7851 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7853 maxindex
= copy_node (maxindex
);
7857 /* Make an error message unless that happened already. */
7858 if (initial_value
!= error_mark_node
)
7861 /* Prevent further error messages. */
7862 maxindex
= build_int_2 (0, 0);
7869 maxindex
= build_int_2 (0, 0);
7877 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7878 if (! TREE_TYPE (maxindex
))
7879 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7881 itype
= TREE_TYPE (initial_value
);
7884 if (itype
&& !TYPE_DOMAIN (itype
))
7885 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7886 /* The type of the main variant should never be used for arrays
7887 of different sizes. It should only ever be completed with the
7888 size of the array. */
7889 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7890 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7893 /* Lay out the type now that we can get the real answer. */
7900 /* Return zero if something is declared to be a member of type
7901 CTYPE when in the context of CUR_TYPE. STRING is the error
7902 message to print in that case. Otherwise, quietly return 1. */
7905 member_function_or_else (ctype
, cur_type
, string
)
7906 tree ctype
, cur_type
;
7909 if (ctype
&& ctype
!= cur_type
)
7911 error (string
, TYPE_NAME_STRING (ctype
));
7917 /* Subroutine of `grokdeclarator'. */
7919 /* Generate errors possibly applicable for a given set of specifiers.
7920 This is for ARM $7.1.2. */
7923 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7926 int virtualp
, quals
, friendp
, raises
, inlinep
;
7929 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7931 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7933 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7936 cp_error_at ("invalid friend declaration", object
);
7938 cp_error_at ("invalid exception specifications", object
);
7941 /* CTYPE is class type, or null if non-class.
7942 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7944 DECLARATOR is the function's name.
7945 VIRTUALP is truthvalue of whether the function is virtual or not.
7946 FLAGS are to be passed through to `grokclassfn'.
7947 QUALS are qualifiers indicating whether the function is `const'
7949 RAISES is a list of exceptions that this function can raise.
7950 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7951 not look, and -1 if we should not call `grokclassfn' at all.
7953 Returns `error_mark_node' if something goes wrong, after issuing
7954 applicable error messages. */
7957 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7958 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7959 template_count
, in_namespace
)
7962 tree orig_declarator
;
7964 enum overload_flags flags
;
7965 tree quals
, raises
, attrlist
;
7966 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7970 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7974 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7975 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7981 type
= build_exception_variant (type
, raises
);
7984 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7985 /* Propagate volatile out from type to decl. */
7986 if (TYPE_VOLATILE (type
))
7987 TREE_THIS_VOLATILE (decl
) = 1;
7989 /* This decl is not from the current namespace. */
7991 set_decl_namespace (decl
, in_namespace
);
7993 /* Should probably propagate const out from type to decl I bet (mrs). */
7996 DECL_STATIC_FUNCTION_P (decl
) = 1;
7997 DECL_CONTEXT (decl
) = ctype
;
8001 DECL_CLASS_CONTEXT (decl
) = ctype
;
8003 if (ctype
== NULL_TREE
&& MAIN_NAME_P (declarator
))
8006 error ("cannot declare `main' to be inline");
8008 error ("cannot declare `main' to be static");
8013 /* Members of anonymous types have no linkage; make them internal. */
8014 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
8019 /* [basic.link]: A name with no linkage (notably, the name of a class
8020 or enumeration declared in a local scope) shall not be used to
8021 declare an entity with linkage.
8023 Only check this for public decls for now. */
8024 t
= no_linkage_check (TREE_TYPE (decl
));
8027 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8028 cp_pedwarn ("non-local function `%#D' uses anonymous type", decl
);
8030 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
8035 TREE_PUBLIC (decl
) = publicp
;
8038 DECL_INTERFACE_KNOWN (decl
) = 1;
8039 DECL_NOT_REALLY_EXTERN (decl
) = 1;
8043 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
8045 DECL_EXTERNAL (decl
) = 1;
8046 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
8048 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
8049 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
8053 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
8054 grok_op_properties (decl
, virtualp
, check
< 0);
8056 if (ctype
&& hack_decl_function_context (decl
))
8057 DECL_NO_STATIC_CHAIN (decl
) = 1;
8059 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
8060 if (TREE_PURPOSE (t
)
8061 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
8063 add_defarg_fn (decl
);
8068 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
8072 ("defining explicit specialization `%D' in friend declaration",
8076 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
8078 /* Something like `template <class T> friend void f<T>()'. */
8079 cp_error ("template-id `%D' in declaration of primary template",
8081 return error_mark_node
;
8084 /* A friend declaration of the form friend void f<>(). Record
8085 the information in the TEMPLATE_ID_EXPR. */
8086 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
8087 DECL_TEMPLATE_INFO (decl
)
8088 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
8089 TREE_OPERAND (orig_declarator
, 1),
8094 /* Caller will do the rest of this. */
8098 if (check
&& funcdef_flag
)
8099 DECL_INITIAL (decl
) = error_mark_node
;
8101 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
8104 /* Just handle constructors here. We could do this
8105 inside the following if stmt, but I think
8106 that the code is more legible by breaking this
8107 case out. See comments below for what each of
8108 the following calls is supposed to do. */
8109 DECL_CONSTRUCTOR_P (decl
) = 1;
8111 grokclassfn (ctype
, decl
, flags
, quals
);
8113 decl
= check_explicit_specialization (orig_declarator
, decl
,
8115 2 * (funcdef_flag
!= 0) +
8116 4 * (friendp
!= 0));
8117 if (decl
== error_mark_node
)
8118 return error_mark_node
;
8120 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8123 tmp
= check_classfn (ctype
, decl
);
8125 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8126 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8128 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8129 cp_error ("definition of implicitly-declared `%D'", tmp
);
8130 if (tmp
&& duplicate_decls (decl
, tmp
))
8133 if (! grok_ctor_properties (ctype
, decl
))
8134 return error_mark_node
;
8136 if (check
== 0 && ! current_function_decl
)
8138 /* Assembler names live in the global namespace. */
8139 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
8140 if (tmp
== NULL_TREE
)
8141 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8142 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8143 cp_error ("inconsistent declarations for `%D'", decl
);
8146 duplicate_decls (decl
, tmp
);
8149 make_decl_rtl (decl
, NULL_PTR
, 1);
8156 /* Function gets the ugly name, field gets the nice one.
8157 This call may change the type of the function (because
8158 of default parameters)! */
8159 if (ctype
!= NULL_TREE
)
8160 grokclassfn (ctype
, decl
, flags
, quals
);
8162 decl
= check_explicit_specialization (orig_declarator
, decl
,
8164 2 * (funcdef_flag
!= 0) +
8165 4 * (friendp
!= 0));
8166 if (decl
== error_mark_node
)
8167 return error_mark_node
;
8169 if (ctype
!= NULL_TREE
8170 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8173 tmp
= check_classfn (ctype
, decl
);
8175 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8176 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8178 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8179 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8181 /* Remove the `this' parm added by grokclassfn.
8182 XXX Isn't this done in start_function, too? */
8183 revert_static_member_fn (&decl
, NULL
, NULL
);
8184 last_function_parms
= TREE_CHAIN (last_function_parms
);
8186 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8187 cp_error ("definition of implicitly-declared `%D'", tmp
);
8190 if (!duplicate_decls (decl
, tmp
))
8191 my_friendly_abort (892);
8196 if (ctype
== NULL_TREE
|| check
)
8199 /* Now install the declaration of this function so that others may
8200 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8202 if (! current_function_decl
)
8204 if (!DECL_TEMPLATE_SPECIALIZATION (decl
))
8206 /* We don't do this for specializations since the
8207 equivalent checks will be done later. Also, at this
8208 point the DECL_ASSEMBLER_NAME is not yet fully
8211 /* FIXME: this should only need to look at
8212 IDENTIFIER_GLOBAL_VALUE. */
8213 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
8214 if (tmp
== NULL_TREE
)
8215 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8216 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8217 cp_error ("inconsistent declarations for `%D'", decl
);
8220 duplicate_decls (decl
, tmp
);
8226 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8227 TREE_VALUE (attrlist
));
8228 make_decl_rtl (decl
, NULL_PTR
, 1);
8232 DECL_VIRTUAL_P (decl
) = 1;
8233 if (DECL_VINDEX (decl
) == NULL_TREE
)
8234 DECL_VINDEX (decl
) = error_mark_node
;
8235 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8242 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8245 RID_BIT_TYPE
*specbits_in
;
8251 RID_BIT_TYPE specbits
;
8253 specbits
= *specbits_in
;
8255 if (TREE_CODE (type
) == OFFSET_TYPE
)
8257 /* If you declare a static member so that it
8258 can be initialized, the code will reach here. */
8259 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8260 type
= TREE_TYPE (type
);
8261 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8262 DECL_CONTEXT (decl
) = basetype
;
8263 DECL_CLASS_CONTEXT (decl
) = basetype
;
8264 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8268 tree context
= in_namespace
? in_namespace
: current_namespace
;
8269 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8270 if (context
!= global_namespace
&& namespace_bindings_p ()
8271 && current_lang_name
!= lang_name_c
)
8272 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8277 set_decl_namespace (decl
, in_namespace
);
8279 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8281 DECL_THIS_EXTERN (decl
) = 1;
8282 DECL_EXTERNAL (decl
) = !initialized
;
8285 /* In class context, static means one per class,
8286 public access, and static storage. */
8287 if (DECL_CLASS_SCOPE_P (decl
))
8289 TREE_PUBLIC (decl
) = 1;
8290 TREE_STATIC (decl
) = 1;
8291 DECL_EXTERNAL (decl
) = 0;
8293 /* At top level, either `static' or no s.c. makes a definition
8294 (perhaps tentative), and absence of `static' makes it public. */
8295 else if (toplevel_bindings_p ())
8297 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8298 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8299 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8301 /* Not at top level, only `static' makes a static definition. */
8304 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8305 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8308 if (TREE_PUBLIC (decl
))
8310 /* [basic.link]: A name with no linkage (notably, the name of a class
8311 or enumeration declared in a local scope) shall not be used to
8312 declare an entity with linkage.
8314 Only check this for public decls for now. */
8315 tree t
= no_linkage_check (TREE_TYPE (decl
));
8318 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8319 /* Ignore for now; `enum { foo } e' is pretty common. */;
8321 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8329 /* Create a canonical pointer to member function type. */
8332 build_ptrmemfunc_type (type
)
8339 /* If a canonical type already exists for this type, use it. We use
8340 this method instead of type_hash_canon, because it only does a
8341 simple equality check on the list of field members. */
8343 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8346 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8348 u
= make_lang_type (UNION_TYPE
);
8349 IS_AGGR_TYPE (u
) = 0;
8350 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8351 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8353 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8354 TYPE_NAME (u
) = NULL_TREE
;
8356 t
= make_lang_type (RECORD_TYPE
);
8358 /* Let the front-end know this is a pointer to member function... */
8359 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8360 /* ... and not really an aggregate. */
8361 IS_AGGR_TYPE (t
) = 0;
8363 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8365 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8367 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8368 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8372 /* Zap out the name so that the back-end will give us the debugging
8373 information for this anonymous RECORD_TYPE. */
8374 TYPE_NAME (t
) = NULL_TREE
;
8376 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8378 /* Seems to be wanted. */
8379 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8383 /* Given declspecs and a declarator,
8384 determine the name and type of the object declared
8385 and construct a ..._DECL node for it.
8386 (In one case we can return a ..._TYPE node instead.
8387 For invalid input we sometimes return 0.)
8389 DECLSPECS is a chain of tree_list nodes whose value fields
8390 are the storage classes and type specifiers.
8392 DECL_CONTEXT says which syntactic context this declaration is in:
8393 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8394 FUNCDEF for a function definition. Like NORMAL but a few different
8395 error messages in each case. Return value may be zero meaning
8396 this definition is too screwy to try to parse.
8397 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8398 handle member functions (which have FIELD context).
8399 Return value may be zero meaning this definition is too screwy to
8401 PARM for a parameter declaration (either within a function prototype
8402 or before a function body). Make a PARM_DECL, or return void_type_node.
8403 CATCHPARM for a parameter declaration before a catch clause.
8404 TYPENAME if for a typename (in a cast or sizeof).
8405 Don't make a DECL node; just return the ..._TYPE node.
8406 FIELD for a struct or union field; make a FIELD_DECL.
8407 BITFIELD for a field with specified width.
8408 INITIALIZED is 1 if the decl has an initializer.
8410 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8411 It may also be so in the PARM case, for a prototype where the
8412 argument type is specified but not the name.
8414 This function is where the complicated C meanings of `static'
8415 and `extern' are interpreted.
8417 For C++, if there is any monkey business to do, the function which
8418 calls this one must do it, i.e., prepending instance variables,
8419 renaming overloaded function names, etc.
8421 Note that for this C++, it is an error to define a method within a class
8422 which does not belong to that class.
8424 Except in the case where SCOPE_REFs are implicitly known (such as
8425 methods within a class being redundantly qualified),
8426 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8427 (class_name::decl_name). The caller must also deal with this.
8429 If a constructor or destructor is seen, and the context is FIELD,
8430 then the type gains the attribute TREE_HAS_x. If such a declaration
8431 is erroneous, NULL_TREE is returned.
8433 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8434 function, these are the qualifiers to give to the `this' pointer.
8436 May return void_type_node if the declarator turned out to be a friend.
8437 See grokfield for details. */
8439 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8442 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8445 enum decl_context decl_context
;
8449 RID_BIT_TYPE specbits
;
8452 tree type
= NULL_TREE
;
8456 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8457 int explicit_int
= 0;
8458 int explicit_char
= 0;
8459 int defaulted_int
= 0;
8460 int opaque_typedef
= 0;
8461 tree typedef_decl
= NULL_TREE
;
8463 tree typedef_type
= NULL_TREE
;
8464 int funcdef_flag
= 0;
8465 enum tree_code innermost_code
= ERROR_MARK
;
8468 /* See the code below that used this. */
8469 tree decl_machine_attr
= NULL_TREE
;
8471 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8472 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8473 tree init
= NULL_TREE
;
8475 /* Keep track of what sort of function is being processed
8476 so that we can warn about default return values, or explicit
8477 return values which do not match prescribed defaults. */
8478 enum return_types return_type
= return_normal
;
8480 tree dname
= NULL_TREE
;
8481 tree ctype
= current_class_type
;
8482 tree ctor_return_type
= NULL_TREE
;
8483 enum overload_flags flags
= NO_SPECIAL
;
8484 tree quals
= NULL_TREE
;
8485 tree raises
= NULL_TREE
;
8486 int template_count
= 0;
8487 tree in_namespace
= NULL_TREE
;
8489 RIDBIT_RESET_ALL (specbits
);
8490 if (decl_context
== FUNCDEF
)
8491 funcdef_flag
= 1, decl_context
= NORMAL
;
8492 else if (decl_context
== MEMFUNCDEF
)
8493 funcdef_flag
= -1, decl_context
= FIELD
;
8494 else if (decl_context
== BITFIELD
)
8495 bitfield
= 1, decl_context
= FIELD
;
8497 /* Look inside a declarator for the name being declared
8498 and get it as a string, for an error message. */
8500 tree
*next
= &declarator
;
8504 while (next
&& *next
)
8507 switch (TREE_CODE (decl
))
8511 next
= &TREE_OPERAND (decl
, 0);
8514 case BIT_NOT_EXPR
: /* For C++ destructors! */
8516 tree name
= TREE_OPERAND (decl
, 0);
8517 tree rename
= NULL_TREE
;
8519 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8521 return_type
= return_dtor
;
8522 if (TREE_CODE (name
) == TYPE_DECL
)
8523 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8524 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8525 if (ctype
== NULL_TREE
)
8527 if (current_class_type
== NULL_TREE
)
8529 error ("destructors must be member functions");
8534 tree t
= constructor_name (current_class_name
);
8541 tree t
= constructor_name (ctype
);
8548 cp_error ("destructor `%T' must match class name `%T'",
8550 TREE_OPERAND (decl
, 0) = rename
;
8556 case ADDR_EXPR
: /* C++ reference declaration */
8561 innermost_code
= TREE_CODE (decl
);
8562 next
= &TREE_OPERAND (decl
, 0);
8566 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8568 /* This is actually a variable declaration using constructor
8569 syntax. We need to call start_decl and cp_finish_decl so we
8570 can get the variable initialized... */
8572 *next
= TREE_OPERAND (decl
, 0);
8573 init
= TREE_OPERAND (decl
, 1);
8575 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8576 /* Look for __unused__ attribute */
8577 if (TREE_USED (TREE_TYPE (decl
)))
8578 TREE_USED (decl
) = 1;
8579 finish_decl (decl
, init
, NULL_TREE
);
8582 innermost_code
= TREE_CODE (decl
);
8583 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8584 ctype
= current_class_type
;
8586 && TREE_OPERAND (decl
, 0)
8587 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8588 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8589 == constructor_name_full (ctype
))
8590 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8591 == constructor_name (ctype
)))))
8592 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8593 next
= &TREE_OPERAND (decl
, 0);
8595 if (ctype
!= NULL_TREE
8596 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8597 && decl
== constructor_name (ctype
))
8599 return_type
= return_ctor
;
8600 ctor_return_type
= ctype
;
8605 case TEMPLATE_ID_EXPR
:
8607 tree fns
= TREE_OPERAND (decl
, 0);
8609 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8610 fns
= TREE_OPERAND (fns
, 0);
8612 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8614 else if (is_overloaded_fn (fns
))
8615 dname
= DECL_NAME (get_first_fn (fns
));
8617 my_friendly_abort (0);
8621 case IDENTIFIER_NODE
:
8622 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8629 cp_error ("declarator-id missing; using reserved word `%D'",
8631 name
= IDENTIFIER_POINTER (dname
);
8633 if (! IDENTIFIER_OPNAME_P (dname
)
8634 /* GNU/Linux headers use '__op'. Arrgh. */
8635 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8636 name
= IDENTIFIER_POINTER (dname
);
8639 if (IDENTIFIER_TYPENAME_P (dname
))
8641 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8642 flags
= TYPENAME_FLAG
;
8643 ctor_return_type
= TREE_TYPE (dname
);
8644 return_type
= return_conversion
;
8646 name
= operator_name_string (dname
);
8653 /* Perform error checking, and decide on a ctype. */
8654 tree cname
= TREE_OPERAND (decl
, 0);
8655 if (cname
== NULL_TREE
)
8657 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8660 in_namespace
= TREE_OPERAND (decl
, 0);
8661 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8663 else if (! is_aggr_type (cname
, 1))
8664 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8665 /* Must test TREE_OPERAND (decl, 1), in case user gives
8666 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8667 else if (TREE_OPERAND (decl
, 1)
8668 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8670 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8671 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8673 cp_error ("`%T::%D' is not a valid declarator", cname
,
8674 TREE_OPERAND (decl
, 1));
8675 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8676 cname
, TREE_OPERAND (decl
, 1));
8677 return void_type_node
;
8679 else if (ctype
== NULL_TREE
)
8681 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8682 TREE_OPERAND (decl
, 0) = ctype
;
8685 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8687 cp_error ("type `%T' is not derived from type `%T'",
8689 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8695 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8696 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8697 == constructor_name_full (ctype
))
8698 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8699 == constructor_name (ctype
))))
8700 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8701 next
= &TREE_OPERAND (decl
, 1);
8705 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8706 && constructor_name (ctype
) == decl
)
8708 return_type
= return_ctor
;
8709 ctor_return_type
= ctype
;
8711 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8712 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8713 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8714 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8716 return_type
= return_dtor
;
8717 ctor_return_type
= ctype
;
8719 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8720 next
= &TREE_OPERAND (decl
, 0);
8731 /* Parse error puts this typespec where
8732 a declarator should go. */
8733 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8734 if (TREE_TYPE (decl
) == current_class_type
)
8735 cp_error (" perhaps you want `%T' for a constructor",
8736 current_class_name
);
8737 dname
= DECL_NAME (decl
);
8738 name
= IDENTIFIER_POINTER (dname
);
8740 /* Avoid giving two errors for this. */
8741 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8743 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8750 cp_compiler_error ("`%D' as declarator", decl
);
8751 return 0; /* We used to do a 155 abort here. */
8758 /* A function definition's declarator must have the form of
8759 a function declarator. */
8761 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8764 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8765 && innermost_code
!= CALL_EXPR
8766 && ! (ctype
&& declspecs
== NULL_TREE
))
8768 cp_error ("declaration of `%D' as non-function", dname
);
8769 return void_type_node
;
8772 /* Anything declared one level down from the top level
8773 must be one of the parameters of a function
8774 (because the body is at least two levels down). */
8776 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8777 by not allowing C++ class definitions to specify their parameters
8778 with xdecls (must be spec.d in the parmlist).
8780 Since we now wait to push a class scope until we are sure that
8781 we are in a legitimate method context, we must set oldcname
8782 explicitly (since current_class_name is not yet alive).
8784 We also want to avoid calling this a PARM if it is in a namespace. */
8786 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8787 && ! pseudo_global_level_p ())
8789 struct binding_level
*b
= current_binding_level
;
8790 current_binding_level
= b
->level_chain
;
8791 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8792 decl_context
= PARM
;
8793 current_binding_level
= b
;
8796 /* Look through the decl specs and record which ones appear.
8797 Some typespecs are defined as built-in typenames.
8798 Others, the ones that are modifiers of other types,
8799 are represented by bits in SPECBITS: set the bits for
8800 the modifiers that appear. Storage class keywords are also in SPECBITS.
8802 If there is a typedef name or a type, store the type in TYPE.
8803 This includes builtin typedefs such as `int'.
8805 Set EXPLICIT_INT if the type is `int' or `char' and did not
8806 come from a user typedef.
8808 Set LONGLONG if `long' is mentioned twice.
8810 For C++, constructors and destructors have their own fast treatment. */
8812 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8817 /* Certain parse errors slip through. For example,
8818 `int class;' is not caught by the parser. Try
8819 weakly to recover here. */
8820 if (TREE_CODE (spec
) != TREE_LIST
)
8823 id
= TREE_VALUE (spec
);
8825 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8827 if (id
== ridpointers
[(int) RID_INT
]
8828 || id
== ridpointers
[(int) RID_CHAR
]
8829 || id
== ridpointers
[(int) RID_BOOL
]
8830 || id
== ridpointers
[(int) RID_WCHAR
])
8834 if (id
== ridpointers
[(int) RID_BOOL
])
8835 error ("`bool' is now a keyword");
8837 cp_error ("extraneous `%T' ignored", id
);
8841 if (id
== ridpointers
[(int) RID_INT
])
8843 else if (id
== ridpointers
[(int) RID_CHAR
])
8845 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8849 /* C++ aggregate types. */
8850 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8853 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8855 type
= IDENTIFIER_TYPE_VALUE (id
);
8859 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8861 if (ridpointers
[i
] == id
)
8863 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8865 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8866 pedwarn ("ANSI C++ does not support `long long'");
8868 error ("`long long long' is too long for GCC");
8872 else if (RIDBIT_SETP (i
, specbits
))
8873 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8874 RIDBIT_SET (i
, specbits
);
8879 /* C++ aggregate types. */
8880 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8883 cp_error ("multiple declarations `%T' and `%T'", type
,
8887 type
= TREE_TYPE (id
);
8888 TREE_VALUE (spec
) = type
;
8893 error ("two or more data types in declaration of `%s'", name
);
8894 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8896 register tree t
= lookup_name (id
, 1);
8897 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8898 error ("`%s' fails to be a typedef or built in type",
8899 IDENTIFIER_POINTER (id
));
8902 type
= TREE_TYPE (t
);
8904 /* See the code below that used this. */
8905 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8910 else if (id
!= error_mark_node
)
8911 /* Can't change CLASS nodes into RECORD nodes here! */
8917 typedef_type
= type
;
8919 /* No type at all: default to `int', and set DEFAULTED_INT
8920 because it was not a user-defined typedef.
8921 Except when we have a `typedef' inside a signature, in
8922 which case the type defaults to `unknown type' and is
8923 instantiated when assigning to a signature pointer or ref. */
8925 if (type
== NULL_TREE
8926 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8927 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8928 || RIDBIT_SETP (RID_LONG
, specbits
)
8929 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8931 /* These imply 'int'. */
8932 type
= integer_type_node
;
8936 if (type
== NULL_TREE
)
8939 if (return_type
== return_dtor
)
8940 type
= void_type_node
;
8941 else if (return_type
== return_ctor
)
8942 type
= build_pointer_type (ctor_return_type
);
8943 else if (return_type
== return_conversion
)
8944 type
= ctor_return_type
;
8945 else if (current_class_type
8946 && IS_SIGNATURE (current_class_type
)
8947 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8948 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8952 type
= copy_node (opaque_type_node
);
8958 if (warn_return_type
8959 && return_type
== return_normal
)
8960 /* Save warning until we know what is really going on. */
8961 warn_about_return_type
= 1;
8963 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8964 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8965 else if (innermost_code
!= CALL_EXPR
|| pedantic
8966 || (warn_return_type
&& return_type
== return_normal
))
8968 if (innermost_code
== CALL_EXPR
)
8969 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
8971 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8974 type
= integer_type_node
;
8977 else if (return_type
== return_dtor
)
8979 error ("return type specification for destructor invalid");
8980 type
= void_type_node
;
8982 else if (return_type
== return_ctor
)
8984 error ("return type specification for constructor invalid");
8985 type
= build_pointer_type (ctor_return_type
);
8987 else if (return_type
== return_conversion
)
8989 if (comptypes (type
, ctor_return_type
, 1) == 0)
8990 cp_error ("operator `%T' declared to return `%T'",
8991 ctor_return_type
, type
);
8993 cp_pedwarn ("return type specified for `operator %T'",
8996 type
= ctor_return_type
;
9001 /* Now process the modifiers that were specified
9002 and check for invalid combinations. */
9004 /* Long double is a special combination. */
9006 if (RIDBIT_SETP (RID_LONG
, specbits
)
9007 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
9009 RIDBIT_RESET (RID_LONG
, specbits
);
9010 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
9011 TYPE_VOLATILE (type
));
9014 /* Check all other uses of type modifiers. */
9016 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
9017 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9018 || RIDBIT_SETP (RID_LONG
, specbits
)
9019 || RIDBIT_SETP (RID_SHORT
, specbits
))
9023 if (TREE_CODE (type
) == REAL_TYPE
)
9024 error ("short, signed or unsigned invalid for `%s'", name
);
9025 else if (TREE_CODE (type
) != INTEGER_TYPE
)
9026 error ("long, short, signed or unsigned invalid for `%s'", name
);
9027 else if (RIDBIT_SETP (RID_LONG
, specbits
)
9028 && RIDBIT_SETP (RID_SHORT
, specbits
))
9029 error ("long and short specified together for `%s'", name
);
9030 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
9031 || RIDBIT_SETP (RID_SHORT
, specbits
))
9033 error ("long or short specified with char for `%s'", name
);
9034 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
9035 || RIDBIT_SETP (RID_SHORT
, specbits
))
9036 && TREE_CODE (type
) == REAL_TYPE
)
9037 error ("long or short specified with floating type for `%s'", name
);
9038 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9039 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
9040 error ("signed and unsigned given together for `%s'", name
);
9044 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
9046 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
9048 if (flag_pedantic_errors
)
9053 /* Discard the type modifiers if they are invalid. */
9056 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
9057 RIDBIT_RESET (RID_SIGNED
, specbits
);
9058 RIDBIT_RESET (RID_LONG
, specbits
);
9059 RIDBIT_RESET (RID_SHORT
, specbits
);
9064 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
9065 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
9067 error ("complex invalid for `%s'", name
);
9068 RIDBIT_RESET (RID_COMPLEX
, specbits
);
9071 /* Decide whether an integer type is signed or not.
9072 Optionally treat bitfields as signed by default. */
9073 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
9074 || (bitfield
&& ! flag_signed_bitfields
9075 && (explicit_int
|| defaulted_int
|| explicit_char
9076 /* A typedef for plain `int' without `signed'
9077 can be controlled just like plain `int'. */
9078 || ! (typedef_decl
!= NULL_TREE
9079 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
9080 && TREE_CODE (type
) != ENUMERAL_TYPE
9081 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
9084 type
= long_long_unsigned_type_node
;
9085 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9086 type
= long_unsigned_type_node
;
9087 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9088 type
= short_unsigned_type_node
;
9089 else if (type
== char_type_node
)
9090 type
= unsigned_char_type_node
;
9091 else if (typedef_decl
)
9092 type
= unsigned_type (type
);
9094 type
= unsigned_type_node
;
9096 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9097 && type
== char_type_node
)
9098 type
= signed_char_type_node
;
9100 type
= long_long_integer_type_node
;
9101 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9102 type
= long_integer_type_node
;
9103 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9104 type
= short_integer_type_node
;
9106 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
9108 /* If we just have "complex", it is equivalent to
9109 "complex double", but if any modifiers at all are specified it is
9110 the complex form of TYPE. E.g, "complex short" is
9111 "complex short int". */
9113 if (defaulted_int
&& ! longlong
9114 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
9115 || RIDBIT_SETP (RID_SHORT
, specbits
)
9116 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9117 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
9118 type
= complex_double_type_node
;
9119 else if (type
== integer_type_node
)
9120 type
= complex_integer_type_node
;
9121 else if (type
== float_type_node
)
9122 type
= complex_float_type_node
;
9123 else if (type
== double_type_node
)
9124 type
= complex_double_type_node
;
9125 else if (type
== long_double_type_node
)
9126 type
= complex_long_double_type_node
;
9128 type
= build_complex_type (type
);
9131 if (return_type
== return_conversion
9132 && (RIDBIT_SETP (RID_CONST
, specbits
)
9133 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9134 cp_error ("`operator %T' cannot be cv-qualified",
9137 /* Set CONSTP if this declaration is `const', whether by
9138 explicit specification or via a typedef.
9139 Likewise for VOLATILEP. */
9141 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9142 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9143 type
= cp_build_type_variant (type
, constp
, volatilep
);
9145 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9146 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9147 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9148 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9149 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9151 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9152 staticp
= 1 + (decl_context
== FIELD
);
9154 if (virtualp
&& staticp
== 2)
9156 cp_error ("member `%D' cannot be declared both virtual and static",
9160 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9161 RIDBIT_RESET (RID_FRIEND
, specbits
);
9163 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9165 if (decl_context
== PARM
)
9167 error ("non-member `%s' cannot be declared `mutable'", name
);
9168 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9170 else if (friendp
|| decl_context
== TYPENAME
)
9172 error ("non-object member `%s' cannot be declared `mutable'", name
);
9173 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9177 /* Warn if two storage classes are given. Default to `auto'. */
9179 if (RIDBIT_ANY_SET (specbits
))
9181 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9182 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9183 if (decl_context
== PARM
&& nclasses
> 0)
9184 error ("storage class specifiers invalid in parameter declarations");
9185 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9187 if (decl_context
== PARM
)
9188 error ("typedef declaration invalid in parameter declaration");
9191 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9192 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9195 /* Give error if `virtual' is used outside of class declaration. */
9197 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9199 error ("virtual outside class declaration");
9202 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9204 error ("only members can be declared mutable");
9205 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9208 /* Static anonymous unions are dealt with here. */
9209 if (staticp
&& decl_context
== TYPENAME
9210 && TREE_CODE (declspecs
) == TREE_LIST
9211 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9212 decl_context
= FIELD
;
9214 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9215 is used in a signature member function declaration. */
9216 if (decl_context
== FIELD
9217 && IS_SIGNATURE (current_class_type
)
9218 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9222 error ("`const' specified for signature member function `%s'", name
);
9227 error ("`volatile' specified for signature member function `%s'",
9233 error ("`inline' specified for signature member function `%s'", name
);
9234 /* Later, we'll make signature member functions inline. */
9239 error ("`friend' declaration in signature definition");
9244 error ("`virtual' specified for signature member function `%s'",
9246 /* Later, we'll make signature member functions virtual. */
9251 /* Warn about storage classes that are invalid for certain
9252 kinds of declarations (parameters, typenames, etc.). */
9255 error ("multiple storage classes in declaration of `%s'", name
);
9256 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9258 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9259 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9260 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9262 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9264 else if (decl_context
== FIELD
9265 && ! IS_SIGNATURE (current_class_type
)
9266 /* C++ allows static class elements */
9267 && RIDBIT_SETP (RID_STATIC
, specbits
))
9268 /* C++ also allows inlines and signed and unsigned elements,
9269 but in those cases we don't come in here. */
9273 if (decl_context
== FIELD
)
9275 tree tmp
= NULL_TREE
;
9276 register int op
= 0;
9280 /* Avoid trying to get an operand off an identifier node. */
9281 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9284 tmp
= TREE_OPERAND (declarator
, 0);
9285 op
= IDENTIFIER_OPNAME_P (tmp
);
9287 error ("storage class specified for %s `%s'",
9288 IS_SIGNATURE (current_class_type
)
9290 ? "signature member operator"
9291 : "signature member function")
9292 : (op
? "member operator" : "field"),
9293 op
? operator_name_string (tmp
) : name
);
9296 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9297 ? "storage class specified for parameter `%s'"
9298 : "storage class specified for typename"), name
);
9299 RIDBIT_RESET (RID_REGISTER
, specbits
);
9300 RIDBIT_RESET (RID_AUTO
, specbits
);
9301 RIDBIT_RESET (RID_EXTERN
, specbits
);
9303 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9305 RIDBIT_RESET (RID_STATIC
, specbits
);
9310 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9312 if (toplevel_bindings_p ())
9314 /* It's common practice (and completely valid) to have a const
9315 be initialized and declared extern. */
9317 warning ("`%s' initialized and declared `extern'", name
);
9320 error ("`%s' has both `extern' and initializer", name
);
9322 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9323 && ! toplevel_bindings_p ())
9324 error ("nested function `%s' declared `extern'", name
);
9325 else if (toplevel_bindings_p ())
9327 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9328 error ("top-level declaration of `%s' specifies `auto'", name
);
9331 if (nclasses
> 0 && friendp
)
9332 error ("storage class specifiers invalid in friend function declarations");
9334 /* Now figure out the structure of the declarator proper.
9335 Descend through it, creating more complex types, until we reach
9336 the declared identifier (or NULL_TREE, in an absolute declarator). */
9338 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9339 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9341 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9342 an INDIRECT_REF (for *...),
9343 a CALL_EXPR (for ...(...)),
9344 an identifier (for the name being declared)
9345 or a null pointer (for the place in an absolute declarator
9346 where the name was omitted).
9347 For the last two cases, we have just exited the loop.
9349 For C++ it could also be
9350 a SCOPE_REF (for class :: ...). In this case, we have converted
9351 sensible names to types, and those are the values we use to
9352 qualify the member name.
9353 an ADDR_EXPR (for &...),
9354 a BIT_NOT_EXPR (for destructors)
9356 At this point, TYPE is the type of elements of an array,
9357 or for a function to return, or for a pointer to point to.
9358 After this sequence of ifs, TYPE is the type of the
9359 array or function or pointer, and DECLARATOR has had its
9360 outermost layer removed. */
9362 if (type
== error_mark_node
)
9364 if (TREE_CODE (declarator
) == SCOPE_REF
)
9365 declarator
= TREE_OPERAND (declarator
, 1);
9367 declarator
= TREE_OPERAND (declarator
, 0);
9370 if (quals
!= NULL_TREE
9371 && (declarator
== NULL_TREE
9372 || TREE_CODE (declarator
) != SCOPE_REF
))
9374 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9375 ctype
= TYPE_METHOD_BASETYPE (type
);
9376 if (ctype
!= NULL_TREE
)
9378 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9379 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9380 type
= TREE_TYPE (dummy
);
9384 switch (TREE_CODE (declarator
))
9388 register tree itype
= NULL_TREE
;
9389 register tree size
= TREE_OPERAND (declarator
, 1);
9390 /* The index is a signed object `sizetype' bits wide. */
9391 tree index_type
= signed_type (sizetype
);
9393 declarator
= TREE_OPERAND (declarator
, 0);
9395 /* Check for some types that there cannot be arrays of. */
9397 if (TREE_CODE (type
) == VOID_TYPE
)
9399 cp_error ("declaration of `%D' as array of voids", dname
);
9400 type
= error_mark_node
;
9403 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9405 cp_error ("declaration of `%D' as array of functions", dname
);
9406 type
= error_mark_node
;
9409 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9410 you can't have arrays of references. If we allowed them,
9411 then we'd be saying x[i] is valid for an array x, but
9412 then you'd have to ask: what does `*(x + i)' mean? */
9413 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9415 if (decl_context
== TYPENAME
)
9416 cp_error ("cannot make arrays of references");
9418 cp_error ("declaration of `%D' as array of references",
9420 type
= error_mark_node
;
9423 if (TREE_CODE (type
) == OFFSET_TYPE
)
9425 cp_error ("declaration of `%D' as array of data members",
9427 type
= error_mark_node
;
9430 if (TREE_CODE (type
) == METHOD_TYPE
)
9432 cp_error ("declaration of `%D' as array of function members",
9434 type
= error_mark_node
;
9437 if (size
== error_mark_node
)
9438 type
= error_mark_node
;
9440 if (type
== error_mark_node
)
9445 /* Must suspend_momentary here because the index
9446 type may need to live until the end of the function.
9447 For example, it is used in the declaration of a
9448 variable which requires destructing at the end of
9449 the function; then build_vec_delete will need this
9451 int yes
= suspend_momentary ();
9452 /* Might be a cast. */
9453 if (TREE_CODE (size
) == NOP_EXPR
9454 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9455 size
= TREE_OPERAND (size
, 0);
9457 /* If this involves a template parameter, it'll be
9458 constant, but we don't know what the value is yet. */
9459 if (processing_template_decl
)
9461 itype
= make_node (INTEGER_TYPE
);
9462 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9463 TYPE_MAX_VALUE (itype
) = build_min
9464 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9465 goto dont_grok_size
;
9468 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9469 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9471 cp_error ("size of array `%D' has non-integer type",
9473 size
= integer_one_node
;
9475 if (TREE_READONLY_DECL_P (size
))
9476 size
= decl_constant_value (size
);
9477 if (pedantic
&& integer_zerop (size
))
9478 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9479 if (TREE_CONSTANT (size
))
9481 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9482 int old_pedantic
= pedantic
;
9483 pedantic
= flag_pedantic_errors
= 1;
9484 /* Always give overflow errors on array subscripts. */
9485 constant_expression_warning (size
);
9486 pedantic
= old_pedantic
;
9487 flag_pedantic_errors
= old_flag_pedantic_errors
;
9488 if (INT_CST_LT (size
, integer_zero_node
))
9490 cp_error ("size of array `%D' is negative", dname
);
9491 size
= integer_one_node
;
9499 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9502 cp_pedwarn ("ANSI C++ forbids variable-size array");
9507 = fold (build_binary_op (MINUS_EXPR
,
9508 cp_convert (index_type
, size
),
9509 cp_convert (index_type
,
9510 integer_one_node
), 1));
9511 if (! TREE_CONSTANT (itype
))
9512 itype
= variable_size (itype
);
9513 else if (TREE_OVERFLOW (itype
))
9515 error ("overflow in array dimension");
9516 TREE_OVERFLOW (itype
) = 0;
9519 /* If we're a parm, we need to have a permanent type so
9520 mangling checks for re-use will work right. If both the
9521 element and index types are permanent, the array type
9523 if (decl_context
== PARM
9524 && allocation_temporary_p () && TREE_PERMANENT (type
))
9526 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9527 itype
= build_index_type (itype
);
9531 itype
= build_index_type (itype
);
9534 resume_momentary (yes
);
9537 type
= build_cplus_array_type (type
, itype
);
9546 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9547 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9549 /* Declaring a function type.
9550 Make sure we have a valid type for the function to return. */
9552 /* We now know that constp and volatilep don't apply to the
9553 decl, but to its return type. */
9554 constp
= volatilep
= 0;
9556 /* Warn about some types functions can't return. */
9558 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9560 error ("`%s' declared as function returning a function", name
);
9561 type
= integer_type_node
;
9563 if (TREE_CODE (type
) == ARRAY_TYPE
)
9565 error ("`%s' declared as function returning an array", name
);
9566 type
= integer_type_node
;
9569 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9570 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9572 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9575 /* Pick up type qualifiers which should be applied to `this'. */
9576 quals
= TREE_OPERAND (declarator
, 2);
9578 /* Pick up the exception specifications. */
9579 raises
= TREE_TYPE (declarator
);
9581 /* Say it's a definition only for the CALL_EXPR
9582 closest to the identifier. */
9585 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9586 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9587 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9589 if (ctype
== NULL_TREE
9590 && decl_context
== FIELD
9592 && (friendp
== 0 || dname
== current_class_name
))
9593 ctype
= current_class_type
;
9595 if (ctype
&& return_type
== return_conversion
)
9596 TYPE_HAS_CONVERSION (ctype
) = 1;
9597 if (ctype
&& constructor_name (ctype
) == dname
)
9599 /* We are within a class's scope. If our declarator name
9600 is the same as the class name, and we are defining
9601 a function, then it is a constructor/destructor, and
9602 therefore returns a void type. */
9604 if (flags
== DTOR_FLAG
)
9606 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9607 not be declared const or volatile. A destructor
9608 may not be static. */
9610 error ("destructor cannot be static member function");
9613 cp_error ("destructors may not be `%s'",
9614 IDENTIFIER_POINTER (TREE_VALUE (quals
)));
9617 if (decl_context
== FIELD
)
9619 if (! member_function_or_else (ctype
, current_class_type
,
9620 "destructor for alien class `%s' cannot be a member"))
9621 return void_type_node
;
9624 else /* It's a constructor. */
9628 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9629 not be declared const or volatile. A constructor may
9630 not be virtual. A constructor may not be static. */
9632 error ("constructor cannot be static member function");
9635 pedwarn ("constructors cannot be declared virtual");
9640 cp_error ("constructors may not be `%s'",
9641 IDENTIFIER_POINTER (TREE_VALUE (quals
)));
9645 RID_BIT_TYPE tmp_bits
;
9646 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9647 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9648 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9649 if (RIDBIT_ANY_SET (tmp_bits
))
9650 error ("return value type specifier for constructor ignored");
9652 type
= build_pointer_type (ctype
);
9653 if (decl_context
== FIELD
9654 && IS_SIGNATURE (current_class_type
))
9656 error ("constructor not allowed in signature");
9657 return void_type_node
;
9659 else if (decl_context
== FIELD
)
9661 if (! member_function_or_else (ctype
, current_class_type
,
9662 "constructor for alien class `%s' cannot be member"))
9663 return void_type_node
;
9664 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9665 if (return_type
!= return_ctor
)
9669 if (decl_context
== FIELD
)
9675 error ("can't initialize friend function `%s'", name
);
9678 /* Cannot be both friend and virtual. */
9679 error ("virtual functions cannot be friends");
9680 RIDBIT_RESET (RID_FRIEND
, specbits
);
9683 if (decl_context
== NORMAL
)
9684 error ("friend declaration not in class definition");
9685 if (current_function_decl
&& funcdef_flag
)
9686 cp_error ("can't define friend function `%s' in a local class definition",
9690 /* Construct the function type and go to the next
9691 inner layer of declarator. */
9693 declarator
= TREE_OPERAND (declarator
, 0);
9695 /* FIXME: This is where default args should be fully
9698 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9700 if (declarator
&& flags
== DTOR_FLAG
)
9702 /* A destructor declared in the body of a class will
9703 be represented as a BIT_NOT_EXPR. But, we just
9704 want the underlying IDENTIFIER. */
9705 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9706 declarator
= TREE_OPERAND (declarator
, 0);
9708 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9709 arg_types
= void_list_node
;
9710 else if (arg_types
== NULL_TREE
9711 || arg_types
!= void_list_node
)
9713 cp_error ("destructors may not have parameters");
9714 arg_types
= void_list_node
;
9715 last_function_parms
= NULL_TREE
;
9719 /* ANSI says that `const int foo ();'
9720 does not make the function foo const. */
9721 type
= build_function_type (type
, arg_types
);
9725 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9726 if (TREE_PURPOSE (t
)
9727 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9729 add_defarg_fn (type
);
9738 /* Filter out pointers-to-references and references-to-references.
9739 We can get these if a TYPE_DECL is used. */
9741 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9743 error ("cannot declare %s to references",
9744 TREE_CODE (declarator
) == ADDR_EXPR
9745 ? "references" : "pointers");
9746 declarator
= TREE_OPERAND (declarator
, 0);
9750 if (TREE_CODE (type
) == OFFSET_TYPE
9751 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9752 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9754 cp_error ("cannot declare pointer to `%#T' member",
9756 type
= TREE_TYPE (type
);
9759 /* Merge any constancy or volatility into the target type
9762 /* We now know that constp and volatilep don't apply to the
9763 decl, but to the target of the pointer. */
9764 constp
= volatilep
= 0;
9766 if (IS_SIGNATURE (type
))
9768 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9770 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9771 && TYPE_SIZE (type
))
9772 cp_warning ("empty signature `%T' used in signature reference declaration",
9775 type
= build_signature_reference_type (type
);
9777 sorry ("signature reference");
9783 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9784 && TYPE_SIZE (type
))
9785 cp_warning ("empty signature `%T' used in signature pointer declaration",
9787 type
= build_signature_pointer_type (type
);
9792 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9794 if (TREE_CODE (type
) == VOID_TYPE
)
9795 error ("invalid type: `void &'");
9797 type
= build_reference_type (type
);
9799 else if (TREE_CODE (type
) == METHOD_TYPE
)
9801 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9804 type
= build_pointer_type (type
);
9806 /* Process a list of type modifier keywords (such as
9807 const or volatile) that were given inside the `*' or `&'. */
9809 if (TREE_TYPE (declarator
))
9811 register tree typemodlist
;
9813 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9814 typemodlist
= TREE_CHAIN (typemodlist
))
9816 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9818 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9823 error ("invalid type modifier within %s declarator",
9824 TREE_CODE (declarator
) == ADDR_EXPR
9825 ? "reference" : "pointer");
9829 pedwarn ("duplicate `const'");
9831 pedwarn ("duplicate `volatile'");
9832 if (TREE_CODE (declarator
) == ADDR_EXPR
9833 && (constp
|| volatilep
))
9836 pedwarn ("discarding `const' applied to a reference");
9838 pedwarn ("discarding `volatile' applied to a reference");
9839 constp
= volatilep
= 0;
9841 type
= cp_build_type_variant (type
, constp
, volatilep
);
9843 declarator
= TREE_OPERAND (declarator
, 0);
9849 /* We have converted type names to NULL_TREE if the
9850 name was bogus, or to a _TYPE node, if not.
9852 The variable CTYPE holds the type we will ultimately
9853 resolve to. The code here just needs to build
9854 up appropriate member types. */
9855 tree sname
= TREE_OPERAND (declarator
, 1);
9858 /* Destructors can have their visibilities changed as well. */
9859 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9860 sname
= TREE_OPERAND (sname
, 0);
9862 if (TREE_COMPLEXITY (declarator
) == 0)
9863 /* This needs to be here, in case we are called
9864 multiple times. */ ;
9865 else if (TREE_COMPLEXITY (declarator
) == -1)
9866 /* Namespace member. */
9867 pop_decl_namespace ();
9868 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9869 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9870 else if (! IS_AGGR_TYPE_CODE
9871 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9873 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9875 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9876 that refer to ctype. They couldn't be resolved earlier
9877 because we hadn't pushed into the class yet.
9878 Example: resolve 'B<T>::type' in
9879 'B<typename B<T>::type> B<T>::f () { }'. */
9880 if (current_template_parms
9881 && uses_template_parms (type
)
9882 && uses_template_parms (current_class_type
))
9884 tree args
= current_template_args ();
9885 type
= tsubst (type
, args
, NULL_TREE
);
9888 /* This pop_nested_class corresponds to the
9889 push_nested_class used to push into class scope for
9890 parsing the argument list of a function decl, in
9892 pop_nested_class (1);
9893 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9896 my_friendly_abort (16);
9898 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9900 /* We had a reference to a global decl, or
9901 perhaps we were given a non-aggregate typedef,
9902 in which case we cleared this out, and should just
9903 keep going as though it wasn't there. */
9907 ctype
= TREE_OPERAND (declarator
, 0);
9910 while (t
!= NULL_TREE
)
9912 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9913 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9914 template_count
+= 1;
9915 t
= TYPE_MAIN_DECL (t
);
9916 if (DECL_LANG_SPECIFIC (t
))
9917 t
= DECL_CLASS_CONTEXT (t
);
9922 if (sname
== NULL_TREE
)
9925 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9927 /* This is the `standard' use of the scoping operator:
9928 basetype :: member . */
9930 if (ctype
== current_class_type
)
9936 Is this ill-formed? */
9939 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9942 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9944 if (current_class_type
== NULL_TREE
9946 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
9947 TYPE_ARG_TYPES (type
));
9950 cp_error ("cannot declare member function `%T::%s' within `%T'",
9951 ctype
, name
, current_class_type
);
9952 return void_type_node
;
9955 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9956 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9958 /* Have to move this code elsewhere in this function.
9959 this code is used for i.e., typedef int A::M; M *pm;
9961 It is? How? jason 10/2/94 */
9963 if (current_class_type
)
9965 cp_error ("cannot declare member `%T::%s' within `%T'",
9966 ctype
, name
, current_class_type
);
9967 return void_type_node
;
9969 type
= build_offset_type (ctype
, type
);
9971 else if (uses_template_parms (ctype
))
9973 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9975 = build_cplus_method_type (ctype
, TREE_TYPE (type
),
9976 TYPE_ARG_TYPES (type
));
9980 cp_error ("structure `%T' not yet defined", ctype
);
9981 return error_mark_node
;
9986 else if (TREE_CODE (sname
) == SCOPE_REF
)
9987 my_friendly_abort (17);
9991 declarator
= TREE_OPERAND (declarator
, 1);
9992 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9993 /* In this case, we will deal with it later. */
9997 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9998 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
9999 TYPE_ARG_TYPES (type
));
10001 type
= build_offset_type (ctype
, type
);
10008 declarator
= TREE_OPERAND (declarator
, 0);
10013 case ENUMERAL_TYPE
:
10014 declarator
= NULL_TREE
;
10018 declarator
= NULL_TREE
;
10022 my_friendly_abort (158);
10026 if (explicitp
== 1)
10028 error ("only constructors can be declared `explicit'");
10032 /* Now TYPE has the actual type. */
10034 /* If this is declaring a typedef name, return a TYPE_DECL. */
10036 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10040 error ("const `%s' cannot be declared `mutable'", name
);
10041 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10045 error ("static `%s' cannot be declared `mutable'", name
);
10046 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10050 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
10054 /* Note that the grammar rejects storage classes
10055 in typenames, fields or parameters. */
10056 if (current_lang_name
== lang_name_java
)
10057 TYPE_FOR_JAVA (type
) = 1;
10059 if (decl_context
== FIELD
)
10061 if (declarator
== current_class_name
)
10062 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
10064 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
10065 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
10066 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
10070 /* Make sure this typedef lives as long as its type,
10071 since it might be used as a template parameter. */
10072 if (type
!= error_mark_node
)
10073 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10074 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10075 if (type
!= error_mark_node
)
10079 /* If the user declares "struct {...} foo" then `foo' will have
10080 an anonymous name. Fill that name in now. Nothing can
10081 refer to it, so nothing needs know about the name change.
10082 The TYPE_NAME field was filled in by build_struct_xref. */
10083 if (type
!= error_mark_node
10084 && TYPE_NAME (type
)
10085 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10086 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10088 /* FIXME: This is bogus; we should not be doing this for
10089 cv-qualified types. */
10091 /* For anonymous structs that are cv-qualified, need to use
10092 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10093 type not referenced after this block, don't bother
10094 resetting type to original type, ie. TREE_TYPE (decl). */
10095 type
= TYPE_MAIN_VARIANT (type
);
10097 /* Replace the anonymous name with the real name everywhere. */
10098 lookup_tag_reverse (type
, declarator
);
10099 TYPE_NAME (type
) = decl
;
10101 if (TYPE_LANG_SPECIFIC (type
))
10102 TYPE_WAS_ANONYMOUS (type
) = 1;
10104 /* XXX Temporarily set the scope.
10105 When returning, start_decl expects it as NULL_TREE,
10106 and will then then set it using pushdecl. */
10107 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10108 if (current_class_type
)
10109 DECL_CONTEXT (decl
) = current_class_type
;
10111 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10113 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10114 DECL_ASSEMBLER_NAME (decl
)
10115 = get_identifier (build_overload_name (type
, 1, 1));
10116 DECL_CONTEXT (decl
) = NULL_TREE
;
10118 /* FIXME remangle member functions; member functions of a
10119 type with external linkage have external linkage. */
10122 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10124 cp_error_at ("typedef name may not be class-qualified", decl
);
10129 if (ctype
== NULL_TREE
)
10131 if (TREE_CODE (type
) != METHOD_TYPE
)
10132 cp_error_at ("invalid type qualifier for non-method type", decl
);
10134 ctype
= TYPE_METHOD_BASETYPE (type
);
10136 if (ctype
!= NULL_TREE
)
10137 grok_method_quals (ctype
, decl
, quals
);
10140 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10141 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10142 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10144 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10145 error ("non-object member `%s' cannot be declared mutable", name
);
10147 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10148 inlinep
, friendp
, raises
!= NULL_TREE
);
10151 error ("typedef declaration includes an initializer");
10156 /* Detect the case of an array type of unspecified size
10157 which came, as such, direct from a typedef name.
10158 We must copy the type, so that each identifier gets
10159 a distinct type, so that each identifier's size can be
10160 controlled separately by its own initializer. */
10162 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10163 && TYPE_DOMAIN (type
) == NULL_TREE
)
10165 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10168 /* If this is a type name (such as, in a cast or sizeof),
10169 compute the type and return it now. */
10171 if (decl_context
== TYPENAME
)
10173 /* Note that the grammar rejects storage classes
10174 in typenames, fields or parameters. */
10175 if (constp
|| volatilep
)
10177 if (IS_SIGNATURE (type
))
10178 error ("`const' or `volatile' specified with signature type");
10181 /* Special case: "friend class foo" looks like a TYPENAME context. */
10186 cp_error ("`volatile' specified for friend class declaration");
10191 cp_error ("`inline' specified for friend class declaration");
10195 /* Only try to do this stuff if we didn't already give up. */
10196 if (type
!= integer_type_node
)
10198 /* A friendly class? */
10199 if (current_class_type
)
10200 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10202 error ("trying to make class `%s' a friend of global scope",
10203 TYPE_NAME_STRING (type
));
10204 type
= void_type_node
;
10209 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10210 if (ctype
== NULL_TREE
)
10212 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10213 ctype
= TYPE_METHOD_BASETYPE (type
);
10215 grok_method_quals (ctype
, dummy
, quals
);
10216 type
= TREE_TYPE (dummy
);
10221 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10222 && decl_context
!= CATCHPARM
10223 && TREE_CODE (type
) != UNION_TYPE
10226 cp_error ("abstract declarator `%T' used as declaration", type
);
10227 declarator
= make_anon_name ();
10230 /* `void' at top level (not within pointer)
10231 is allowed only in typedefs or type names.
10232 We don't complain about parms either, but that is because
10233 a better error message can be made later. */
10235 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10238 error ("unnamed variable or field declared void");
10239 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10241 if (IDENTIFIER_OPNAME_P (declarator
))
10242 my_friendly_abort (356);
10244 error ("variable or field `%s' declared void", name
);
10247 error ("variable or field declared void");
10248 type
= integer_type_node
;
10251 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10252 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10254 if (decl_context
== PARM
|| decl_context
== CATCHPARM
)
10256 if (ctype
|| in_namespace
)
10257 error ("cannot use `::' in parameter declaration");
10259 /* A parameter declared as an array of T is really a pointer to T.
10260 One declared as a function is really a pointer to a function.
10261 One declared as a member is really a pointer to member. */
10263 if (TREE_CODE (type
) == ARRAY_TYPE
)
10265 /* Transfer const-ness of array into that of type pointed to. */
10266 type
= build_pointer_type (TREE_TYPE (type
));
10267 volatilep
= constp
= 0;
10269 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10270 type
= build_pointer_type (type
);
10271 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10272 type
= build_pointer_type (type
);
10273 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10275 error ("declaration of `%s' as void", name
);
10281 register tree decl
;
10283 if (decl_context
== PARM
)
10285 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10287 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10288 inlinep
, friendp
, raises
!= NULL_TREE
);
10289 if (current_class_type
10290 && IS_SIGNATURE (current_class_type
))
10293 error ("parameter of signature member function declared `inline'");
10294 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10295 error ("parameter of signature member function declared `auto'");
10296 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10297 error ("parameter of signature member function declared `register'");
10300 /* Compute the type actually passed in the parmlist,
10301 for the case where there is no prototype.
10302 (For example, shorts and chars are passed as ints.)
10303 When there is a prototype, this is overridden later. */
10305 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10307 else if (decl_context
== FIELD
)
10309 if (type
== error_mark_node
)
10311 /* Happens when declaring arrays of sizes which
10312 are error_mark_node, for example. */
10315 else if (in_namespace
)
10317 /* Something like struct S { int N::j; }; */
10318 cp_error ("invalid use of `::'");
10321 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10324 tree function_context
;
10326 /* We catch the others as conflicts with the builtin
10328 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10330 cp_error ("function `%D' cannot be declared friend",
10337 if (ctype
== NULL_TREE
)
10338 ctype
= current_class_type
;
10340 if (ctype
== NULL_TREE
)
10342 cp_error ("can't make `%D' into a method -- not in a class",
10344 return void_type_node
;
10347 /* ``A union may [ ... ] not [ have ] virtual functions.''
10349 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10351 cp_error ("function `%D' declared virtual inside a union",
10353 return void_type_node
;
10356 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10357 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10358 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10359 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10363 cp_error ("`%D' cannot be declared virtual, since it is always static",
10368 else if (staticp
< 2)
10369 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10370 TYPE_ARG_TYPES (type
));
10373 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10374 function_context
= (ctype
!= NULL_TREE
) ?
10375 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10376 publicp
= (! friendp
|| ! staticp
)
10377 && function_context
== NULL_TREE
;
10378 decl
= grokfndecl (ctype
, type
,
10379 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10380 ? declarator
: dname
,
10382 virtualp
, flags
, quals
, raises
, attrlist
,
10383 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10384 funcdef_flag
, template_count
, in_namespace
);
10385 if (decl
== NULL_TREE
|| decl
== error_mark_node
)
10388 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10389 /* The decl and setting of decl_machine_attr is also turned off. */
10390 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10393 if (explicitp
== 2)
10394 DECL_NONCONVERTING_P (decl
) = 1;
10396 else if (TREE_CODE (type
) == METHOD_TYPE
)
10398 /* We only get here for friend declarations of
10399 members of other classes. */
10400 /* All method decls are public, so tell grokfndecl to set
10401 TREE_PUBLIC, also. */
10402 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10403 virtualp
, flags
, quals
, raises
, attrlist
,
10404 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10405 template_count
, in_namespace
);
10406 if (decl
== NULL_TREE
)
10409 else if (!staticp
&& ! processing_template_decl
10410 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10411 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10414 cp_error ("field `%D' has incomplete type", declarator
);
10416 cp_error ("name `%T' has incomplete type", type
);
10418 /* If we're instantiating a template, tell them which
10419 instantiation made the field's type be incomplete. */
10420 if (current_class_type
10421 && TYPE_NAME (current_class_type
)
10422 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10423 && declspecs
&& TREE_VALUE (declspecs
)
10424 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10425 cp_error (" in instantiation of template `%T'",
10426 current_class_type
);
10428 type
= error_mark_node
;
10435 error ("`%s' is neither function nor method; cannot be declared friend",
10436 IDENTIFIER_POINTER (declarator
));
10444 /* Friends are treated specially. */
10445 if (ctype
== current_class_type
)
10446 warning ("member functions are implicitly friends of their class");
10449 tree t
= NULL_TREE
;
10450 if (decl
&& DECL_NAME (decl
))
10452 if (template_class_depth (current_class_type
) == 0)
10455 = check_explicit_specialization
10457 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10458 if (decl
== error_mark_node
)
10459 return error_mark_node
;
10462 t
= do_friend (ctype
, declarator
, decl
,
10463 last_function_parms
, flags
, quals
,
10466 if (t
&& funcdef_flag
)
10469 return void_type_node
;
10473 /* Structure field. It may not be a function, except for C++ */
10475 if (decl
== NULL_TREE
)
10481 /* An attempt is being made to initialize a non-static
10482 member. But, from [class.mem]:
10484 4 A member-declarator can contain a
10485 constant-initializer only if it declares a static
10486 member (_class.static_) of integral or enumeration
10487 type, see _class.static.data_.
10489 This used to be relatively common practice, but
10490 the rest of the compiler does not correctly
10491 handle the initialization unless the member is
10492 static so we make it static below. */
10493 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10494 constp
? "const member" : "member",
10496 cp_pedwarn ("making `%D' static", declarator
);
10500 /* Motion 10 at San Diego: If a static const integral data
10501 member is initialized with an integral constant
10502 expression, the initializer may appear either in the
10503 declaration (within the class), or in the definition,
10504 but not both. If it appears in the class, the member is
10505 a member constant. The file-scope definition is always
10507 if (CLASS_TYPE_P (type
)
10508 || TREE_CODE (type
) == REFERENCE_TYPE
)
10510 cp_error ("in-class initialization of static data member of non-integral type `%T'",
10512 /* If we just return the declaration, crashes will
10513 sometimes occur. We therefore return
10514 void_type_node, as if this was a friend
10515 declaration, to cause callers to completely
10516 ignore this declaration. */
10517 return void_type_node
;
10520 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10522 else if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10523 && !uses_template_parms (type
))
10524 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10529 /* ANSI C++ Apr '95 wp 9.2 */
10530 if (declarator
== current_class_name
)
10531 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10534 /* C++ allows static class members.
10535 All other work for this is done by grokfield.
10536 This VAR_DCL is built by build_lang_field_decl.
10537 All other VAR_DECLs are built by build_decl. */
10538 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10539 TREE_STATIC (decl
) = 1;
10540 /* In class context, 'static' means public access. */
10541 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10545 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10546 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10548 DECL_MUTABLE_P (decl
) = 1;
10549 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10553 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10554 inlinep
, friendp
, raises
!= NULL_TREE
);
10557 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10559 tree original_name
;
10565 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10566 original_name
= dname
;
10568 original_name
= declarator
;
10570 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10571 error ("storage class `auto' invalid for function `%s'", name
);
10572 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10573 error ("storage class `register' invalid for function `%s'", name
);
10575 /* Function declaration not at top level.
10576 Storage classes other than `extern' are not allowed
10577 and `extern' makes no difference. */
10578 if (! toplevel_bindings_p ()
10579 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10580 || RIDBIT_SETP (RID_INLINE
, specbits
))
10583 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10584 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10586 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10589 if (ctype
== NULL_TREE
)
10593 error ("virtual non-class function `%s'", name
);
10597 if (current_lang_name
== lang_name_cplusplus
10598 && ! processing_template_decl
10599 && ! MAIN_NAME_P (original_name
)
10600 && ! (IDENTIFIER_LENGTH (original_name
) > 10
10601 && IDENTIFIER_POINTER (original_name
)[0] == '_'
10602 && IDENTIFIER_POINTER (original_name
)[1] == '_'
10603 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
10604 /* Plain overloading: will not be grok'd by grokclassfn. */
10605 if (name_mangling_version
< 1
10606 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10607 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
10609 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10610 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10611 TYPE_ARG_TYPES (type
));
10613 /* Record presence of `static'. */
10614 publicp
= (ctype
!= NULL_TREE
10615 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10616 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10618 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10619 virtualp
, flags
, quals
, raises
, attrlist
,
10621 publicp
, inlinep
, funcdef_flag
,
10622 template_count
, in_namespace
);
10623 if (decl
== NULL_TREE
)
10626 /* Among other times, could occur from check_explicit_specialization
10627 returning an error_mark_node. */
10628 if (decl
== error_mark_node
)
10629 return error_mark_node
;
10631 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
10632 && (! DECL_USE_TEMPLATE (decl
) ||
10633 name_mangling_version
< 1))
10634 DECL_ASSEMBLER_NAME (decl
) = declarator
;
10638 int illegal_static
= 0;
10640 /* Don't allow a static member function in a class, and forbid
10641 declaring main to be static. */
10642 if (TREE_CODE (type
) == METHOD_TYPE
)
10644 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10645 illegal_static
= 1;
10647 else if (current_function_decl
)
10649 /* FIXME need arm citation */
10650 error ("cannot declare static function inside another function");
10651 illegal_static
= 1;
10654 if (illegal_static
)
10657 RIDBIT_RESET (RID_STATIC
, specbits
);
10663 /* It's a variable. */
10665 /* An uninitialized decl with `extern' is a reference. */
10666 decl
= grokvardecl (type
, declarator
, &specbits
,
10667 initialized
, constp
, in_namespace
);
10668 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10669 inlinep
, friendp
, raises
!= NULL_TREE
);
10673 DECL_CONTEXT (decl
) = ctype
;
10676 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10678 RIDBIT_RESET (RID_STATIC
, specbits
);
10680 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10682 cp_error ("static member `%D' declared `register'", decl
);
10683 RIDBIT_RESET (RID_REGISTER
, specbits
);
10685 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10687 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10689 RIDBIT_RESET (RID_EXTERN
, specbits
);
10694 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10696 error ("`%s' cannot be declared mutable", name
);
10699 /* Record `register' declaration for warnings on &
10700 and in case doing stupid register allocation. */
10702 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10703 DECL_REGISTER (decl
) = 1;
10705 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10706 DECL_THIS_EXTERN (decl
) = 1;
10708 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10709 DECL_THIS_STATIC (decl
) = 1;
10711 /* Record constancy and volatility. */
10714 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10717 TREE_SIDE_EFFECTS (decl
) = 1;
10718 TREE_THIS_VOLATILE (decl
) = 1;
10725 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10726 An empty exprlist is a parmlist. An exprlist which
10727 contains only identifiers at the global level
10728 is a parmlist. Otherwise, it is an exprlist. */
10731 parmlist_is_exprlist (exprs
)
10734 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10737 if (toplevel_bindings_p ())
10739 /* At the global level, if these are all identifiers,
10740 then it is a parmlist. */
10743 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10745 exprs
= TREE_CHAIN (exprs
);
10752 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10755 C++: also subroutine of `start_function'. */
10758 require_complete_types_for_parms (parms
)
10761 if (processing_template_decl
)
10766 tree type
= TREE_TYPE (parms
);
10767 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10769 if (DECL_NAME (parms
))
10770 error ("parameter `%s' has incomplete type",
10771 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10773 error ("parameter has incomplete type");
10774 TREE_TYPE (parms
) = error_mark_node
;
10777 /* If the arg types are incomplete in a declaration,
10778 they must include undefined tags.
10779 These tags can never be defined in the scope of the declaration,
10780 so the types can never be completed,
10781 and no call can be compiled successfully. */
10782 /* This is not the right behavior for C++, but not having
10783 it is also probably wrong. */
10786 /* Now warn if is a pointer to an incomplete type. */
10787 while (TREE_CODE (type
) == POINTER_TYPE
10788 || TREE_CODE (type
) == REFERENCE_TYPE
)
10789 type
= TREE_TYPE (type
);
10790 type
= TYPE_MAIN_VARIANT (type
);
10791 if (TYPE_SIZE (type
) == NULL_TREE
)
10793 if (DECL_NAME (parm
) != NULL_TREE
)
10794 warning ("parameter `%s' points to incomplete type",
10795 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10797 warning ("parameter points to incomplete type");
10801 parms
= TREE_CHAIN (parms
);
10805 /* Decode the list of parameter types for a function type.
10806 Given the list of things declared inside the parens,
10807 return a list of types.
10809 The list we receive can have three kinds of elements:
10810 an IDENTIFIER_NODE for names given without types,
10811 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10812 or void_type_node, to mark the end of an argument list
10813 when additional arguments are not permitted (... was not used).
10815 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10816 a mere declaration. A nonempty identifier-list gets an error message
10817 when FUNCDEF_FLAG is zero.
10818 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10819 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10821 If all elements of the input list contain types,
10822 we return a list of the types.
10823 If all elements contain no type (except perhaps a void_type_node
10824 at the end), we return a null list.
10825 If some have types and some do not, it is an error, and we
10826 return a null list.
10828 Also set last_function_parms to either
10829 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10830 A list of names is converted to a chain of PARM_DECLs
10831 by store_parm_decls so that ultimately it is always a chain of decls.
10833 Note that in C++, parameters can take default values. These default
10834 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10835 an error to specify default values which are followed by parameters
10836 that have no default values, or an ELLIPSES. For simplicities sake,
10837 only parameters which are specified with their types can take on
10841 grokparms (first_parm
, funcdef_flag
)
10845 tree result
= NULL_TREE
;
10846 tree decls
= NULL_TREE
;
10848 if (first_parm
!= NULL_TREE
10849 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10851 if (! funcdef_flag
)
10852 pedwarn ("parameter names (without types) in function declaration");
10853 last_function_parms
= first_parm
;
10856 else if (first_parm
!= NULL_TREE
10857 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10858 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10859 my_friendly_abort (145);
10862 /* Types were specified. This is a list of declarators
10863 each represented as a TREE_LIST node. */
10864 register tree parm
, chain
;
10865 int any_init
= 0, any_error
= 0;
10867 if (first_parm
!= NULL_TREE
)
10869 tree last_result
= NULL_TREE
;
10870 tree last_decl
= NULL_TREE
;
10872 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10874 tree type
= NULL_TREE
, list_node
= parm
;
10875 register tree decl
= TREE_VALUE (parm
);
10876 tree init
= TREE_PURPOSE (parm
);
10878 chain
= TREE_CHAIN (parm
);
10879 /* @@ weak defense against parse errors. */
10880 if (TREE_CODE (decl
) != VOID_TYPE
10881 && TREE_CODE (decl
) != TREE_LIST
)
10883 /* Give various messages as the need arises. */
10884 if (TREE_CODE (decl
) == STRING_CST
)
10885 cp_error ("invalid string constant `%E'", decl
);
10886 else if (TREE_CODE (decl
) == INTEGER_CST
)
10887 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10891 if (TREE_CODE (decl
) != VOID_TYPE
)
10893 decl
= grokdeclarator (TREE_VALUE (decl
),
10894 TREE_PURPOSE (decl
),
10895 PARM
, init
!= NULL_TREE
,
10900 /* Top-level qualifiers on the parameters are
10901 ignored for function types. */
10902 type
= TYPE_MAIN_VARIANT (TREE_TYPE (decl
));
10904 if (TREE_CODE (type
) == VOID_TYPE
)
10905 decl
= void_type_node
;
10906 else if (TREE_CODE (type
) == METHOD_TYPE
)
10908 if (DECL_NAME (decl
))
10909 /* Cannot use the decl here because
10910 we don't have DECL_CONTEXT set up yet. */
10911 cp_error ("parameter `%D' invalidly declared method type",
10914 error ("parameter invalidly declared method type");
10915 type
= build_pointer_type (type
);
10916 TREE_TYPE (decl
) = type
;
10918 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10920 if (DECL_NAME (decl
))
10921 cp_error ("parameter `%D' invalidly declared offset type",
10924 error ("parameter invalidly declared offset type");
10925 type
= build_pointer_type (type
);
10926 TREE_TYPE (decl
) = type
;
10928 else if (TREE_CODE (type
) == RECORD_TYPE
10929 && TYPE_LANG_SPECIFIC (type
)
10930 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10932 abstract_virtuals_error (decl
, type
);
10933 any_error
= 1; /* Seems like a good idea. */
10935 else if (TREE_CODE (type
) == RECORD_TYPE
10936 && TYPE_LANG_SPECIFIC (type
)
10937 && IS_SIGNATURE (type
))
10939 signature_error (decl
, type
);
10940 any_error
= 1; /* Seems like a good idea. */
10942 else if (POINTER_TYPE_P (type
))
10945 while (POINTER_TYPE_P (t
)
10946 || (TREE_CODE (t
) == ARRAY_TYPE
10947 && TYPE_DOMAIN (t
) != NULL_TREE
))
10949 if (TREE_CODE (t
) == ARRAY_TYPE
)
10950 cp_error ("parameter type `%T' includes %s to array of unknown bound",
10952 TYPE_PTR_P (type
) ? "pointer" : "reference");
10956 if (TREE_CODE (decl
) == VOID_TYPE
)
10958 if (result
== NULL_TREE
)
10960 result
= void_list_node
;
10961 last_result
= result
;
10965 TREE_CHAIN (last_result
) = void_list_node
;
10966 last_result
= void_list_node
;
10969 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10970 error ("`void' in parameter list must be entire list");
10974 /* Since there is a prototype, args are passed in their own types. */
10975 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10976 #ifdef PROMOTE_PROTOTYPES
10977 if ((TREE_CODE (type
) == INTEGER_TYPE
10978 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10979 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10980 DECL_ARG_TYPE (decl
) = integer_type_node
;
10987 if (TREE_CODE (init
) == SAVE_EXPR
)
10988 PARM_DECL_EXPR (init
) = 1;
10989 else if (processing_template_decl
)
10991 /* Unparsed default arg from in-class decl. */
10992 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10994 else if (TREE_CODE (init
) == VAR_DECL
10995 || TREE_CODE (init
) == PARM_DECL
)
10997 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10999 /* ``Local variables may not be used in default
11000 argument expressions.'' dpANSI C++ 8.2.6 */
11001 /* If extern int i; within a function is not
11002 considered a local variable, then this code is
11004 cp_error ("local variable `%D' may not be used as a default argument", init
);
11007 else if (TREE_READONLY_DECL_P (init
))
11008 init
= decl_constant_value (init
);
11011 init
= require_instantiated_type (type
, init
, integer_zero_node
);
11012 if (! processing_template_decl
11013 && init
!= error_mark_node
11014 && TREE_CODE (init
) != DEFAULT_ARG
11015 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
11016 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
11017 TREE_TYPE (init
), decl
);
11023 if (decls
== NULL_TREE
)
11030 TREE_CHAIN (last_decl
) = decl
;
11033 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
11035 TREE_PURPOSE (list_node
) = init
;
11036 TREE_VALUE (list_node
) = type
;
11037 TREE_CHAIN (list_node
) = NULL_TREE
;
11040 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
11041 if (result
== NULL_TREE
)
11043 result
= list_node
;
11044 last_result
= result
;
11048 TREE_CHAIN (last_result
) = list_node
;
11049 last_result
= list_node
;
11053 TREE_CHAIN (last_result
) = NULL_TREE
;
11054 /* If there are no parameters, and the function does not end
11055 with `...', then last_decl will be NULL_TREE. */
11056 if (last_decl
!= NULL_TREE
)
11057 TREE_CHAIN (last_decl
) = NULL_TREE
;
11061 last_function_parms
= decls
;
11063 /* In a fcn definition, arg types must be complete. */
11064 if (funcdef_flag
> 0)
11065 require_complete_types_for_parms (last_function_parms
);
11070 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11071 FUNCTION_TYPE with the newly parsed version of its default argument, which
11072 was previously digested as text. See snarf_defarg et al in lex.c. */
11075 replace_defarg (arg
, init
)
11078 if (! processing_template_decl
11079 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11080 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11081 TREE_TYPE (init
), TREE_VALUE (arg
));
11082 TREE_PURPOSE (arg
) = init
;
11089 tree t
= FUNCTION_ARG_CHAIN (d
);
11090 if (DECL_CONSTRUCTOR_P (d
)
11091 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11092 t
= TREE_CHAIN (t
);
11093 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11094 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11095 == DECL_CLASS_CONTEXT (d
))
11096 && (TREE_CHAIN (t
) == NULL_TREE
11097 || TREE_CHAIN (t
) == void_list_node
11098 || TREE_PURPOSE (TREE_CHAIN (t
))))
11103 /* These memoizing functions keep track of special properties which
11104 a class may have. `grok_ctor_properties' notices whether a class
11105 has a constructor of the form X(X&), and also complains
11106 if the class has a constructor of the form X(X).
11107 `grok_op_properties' takes notice of the various forms of
11108 operator= which are defined, as well as what sorts of type conversion
11109 may apply. Both functions take a FUNCTION_DECL as an argument. */
11112 grok_ctor_properties (ctype
, decl
)
11115 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11116 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11118 /* When a type has virtual baseclasses, a magical first int argument is
11119 added to any ctor so we can tell if the class has been initialized
11120 yet. This could screw things up in this function, so we deliberately
11121 ignore the leading int if we're in that situation. */
11122 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11124 my_friendly_assert (parmtypes
11125 && TREE_VALUE (parmtypes
) == integer_type_node
,
11127 parmtypes
= TREE_CHAIN (parmtypes
);
11128 parmtype
= TREE_VALUE (parmtypes
);
11131 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11132 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11133 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11134 || TREE_CHAIN (parmtypes
) == void_list_node
11135 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11137 TYPE_HAS_INIT_REF (ctype
) = 1;
11138 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11139 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11141 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11142 && TREE_CHAIN (parmtypes
) != NULL_TREE
11143 && TREE_CHAIN (parmtypes
) == void_list_node
)
11145 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11147 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11150 else if (TREE_CODE (parmtype
) == VOID_TYPE
11151 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11152 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11157 /* An operator with this name can be either unary or binary. */
11163 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11164 || name
== ansi_opname
[(int) ADDR_EXPR
]
11165 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11166 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11167 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11168 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11171 /* An operator with this name can only be unary. */
11177 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11178 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11179 || name
== ansi_opname
[(int) COMPONENT_REF
]
11180 || OPERATOR_TYPENAME_P (name
));
11183 /* Do a little sanity-checking on how they declared their operator. */
11186 grok_op_properties (decl
, virtualp
, friendp
)
11188 int virtualp
, friendp
;
11190 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11191 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11192 tree name
= DECL_NAME (decl
);
11194 if (current_class_type
== NULL_TREE
)
11199 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11200 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11201 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11202 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11203 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11204 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11205 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11206 || name
== ansi_opname
[(int) MEMBER_REF
])
11207 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11208 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11209 TYPE_GETS_NEW (current_class_type
) |= 1;
11210 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11211 TYPE_GETS_DELETE (current_class_type
) |= 1;
11212 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11213 TYPE_GETS_NEW (current_class_type
) |= 2;
11214 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11215 TYPE_GETS_DELETE (current_class_type
) |= 2;
11218 if (name
== ansi_opname
[(int) NEW_EXPR
]
11219 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11221 /* When the compiler encounters the definition of A::operator new, it
11222 doesn't look at the class declaration to find out if it's static. */
11224 revert_static_member_fn (&decl
, NULL
, NULL
);
11226 /* Take care of function decl if we had syntax errors. */
11227 if (argtypes
== NULL_TREE
)
11229 = build_function_type (ptr_type_node
,
11230 hash_tree_chain (integer_type_node
,
11233 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11235 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11236 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11239 revert_static_member_fn (&decl
, NULL
, NULL
);
11241 if (argtypes
== NULL_TREE
)
11243 = build_function_type (void_type_node
,
11244 hash_tree_chain (ptr_type_node
,
11248 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11250 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11251 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11252 != void_list_node
))
11253 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11258 /* An operator function must either be a non-static member function
11259 or have at least one parameter of a class, a reference to a class,
11260 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11261 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11263 if (OPERATOR_TYPENAME_P (name
)
11264 || name
== ansi_opname
[(int) CALL_EXPR
]
11265 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11266 || name
== ansi_opname
[(int) COMPONENT_REF
]
11267 || name
== ansi_opname
[(int) ARRAY_REF
])
11268 cp_error ("`%D' must be a nonstatic member function", decl
);
11273 if (DECL_STATIC_FUNCTION_P (decl
))
11274 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11277 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11279 tree arg
= TREE_VALUE (p
);
11280 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11281 arg
= TREE_TYPE (arg
);
11283 /* This lets bad template code slip through. */
11284 if (IS_AGGR_TYPE (arg
)
11285 || TREE_CODE (arg
) == ENUMERAL_TYPE
11286 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11287 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11291 ("`%D' must have an argument of class or enumerated type",
11298 if (name
== ansi_opname
[(int) CALL_EXPR
])
11299 return; /* No restrictions on args. */
11301 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11303 tree t
= TREE_TYPE (name
);
11304 if (TREE_CODE (t
) == VOID_TYPE
)
11305 pedwarn ("void is not a valid type conversion operator");
11306 else if (! friendp
)
11308 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11311 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11313 if (t
== current_class_type
)
11314 what
= "the same type";
11315 /* Don't force t to be complete here. */
11316 else if (IS_AGGR_TYPE (t
)
11318 && DERIVED_FROM_P (t
, current_class_type
))
11319 what
= "a base class";
11322 warning ("conversion to %s%s will never use a type conversion operator",
11323 ref
? "a reference to " : "", what
);
11327 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11331 if (list_length (argtypes
) != 3 && methodp
)
11333 cp_error ("`%D' must take exactly one argument", decl
);
11336 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11338 if (copy_assignment_arg_p (parmtype
, virtualp
)
11341 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11342 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11343 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11344 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11347 else if (name
== ansi_opname
[(int) COND_EXPR
])
11350 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11351 if (list_length (argtypes
) != 4)
11352 cp_error ("`%D' must take exactly three arguments", decl
);
11354 else if (ambi_op_p (name
))
11356 if (list_length (argtypes
) == 2)
11358 else if (list_length (argtypes
) == 3)
11360 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11361 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11362 && ! processing_template_decl
11363 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11366 cp_error ("postfix `%D' must take `int' as its argument",
11370 ("postfix `%D' must take `int' as its second argument",
11377 cp_error ("`%D' must take either zero or one argument", decl
);
11379 cp_error ("`%D' must take either one or two arguments", decl
);
11382 /* More Effective C++ rule 6. */
11384 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11385 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11387 tree arg
= TREE_VALUE (argtypes
);
11388 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11389 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11390 arg
= TREE_TYPE (arg
);
11391 arg
= TYPE_MAIN_VARIANT (arg
);
11392 if (list_length (argtypes
) == 2)
11394 if (TREE_CODE (ret
) != REFERENCE_TYPE
11395 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11397 cp_warning ("prefix `%D' should return `%T'", decl
,
11398 build_reference_type (arg
));
11402 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11403 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11407 else if (unary_op_p (name
))
11409 if (list_length (argtypes
) != 2)
11412 cp_error ("`%D' must take `void'", decl
);
11414 cp_error ("`%D' must take exactly one argument", decl
);
11417 else /* if (binary_op_p (name)) */
11419 if (list_length (argtypes
) != 3)
11422 cp_error ("`%D' must take exactly one argument", decl
);
11424 cp_error ("`%D' must take exactly two arguments", decl
);
11427 /* More Effective C++ rule 7. */
11429 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11430 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11431 || name
== ansi_opname
[COMPOUND_EXPR
]))
11432 cp_warning ("user-defined `%D' always evaluates both arguments",
11436 /* Effective C++ rule 23. */
11438 && list_length (argtypes
) == 3
11439 && (name
== ansi_opname
[PLUS_EXPR
]
11440 || name
== ansi_opname
[MINUS_EXPR
]
11441 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11442 || name
== ansi_opname
[MULT_EXPR
])
11443 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11444 cp_warning ("`%D' should return by value", decl
);
11448 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11449 if (TREE_PURPOSE (argtypes
))
11451 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11452 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11453 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11456 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11459 cp_error ("`%D' cannot have default arguments", decl
);
11464 /* Get the struct, enum or union (CODE says which) with tag NAME.
11465 Define the tag as a forward-reference if it is not defined.
11467 C++: If a class derivation is given, process it here, and report
11468 an error if multiple derivation declarations are not identical.
11470 If this is a definition, come in through xref_tag and only look in
11471 the current frame for the name (since C++ allows new names in any
11475 xref_tag (code_type_node
, name
, globalize
)
11476 tree code_type_node
;
11480 enum tag_types tag_code
;
11481 enum tree_code code
;
11483 register tree ref
, t
;
11484 struct binding_level
*b
= inner_binding_level
;
11486 tree attributes
= NULL_TREE
;
11488 /* If we are called from the parser, code_type_node will sometimes be a
11489 TREE_LIST. This indicates that the user wrote
11490 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11492 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11494 attributes
= TREE_PURPOSE (code_type_node
);
11495 code_type_node
= TREE_VALUE (code_type_node
);
11498 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11503 case signature_type
:
11504 code
= RECORD_TYPE
;
11510 code
= ENUMERAL_TYPE
;
11513 my_friendly_abort (18);
11516 /* If a cross reference is requested, look up the type
11517 already defined for this tag and return it. */
11518 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11521 name
= TYPE_IDENTIFIER (t
);
11525 t
= IDENTIFIER_TYPE_VALUE (name
);
11527 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11528 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11533 if (t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11534 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11536 cp_error ("redeclaration of template type-parameter `%T'", name
);
11537 cp_error_at (" previously declared here `%#D'",
11538 TEMPLATE_TYPE_DECL (t
));
11540 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11543 /* If we know we are defining this tag, only look it up in
11544 this scope and don't try to find it as a type. */
11545 ref
= lookup_tag (code
, name
, b
, 1);
11549 if (current_class_type
11550 && template_class_depth (current_class_type
)
11551 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11552 /* Since GLOBALIZE is non-zero, we are not looking at a
11553 definition of this tag. Since, in addition, we are currently
11554 processing a (member) template declaration of a template
11555 class, we don't want to do any lookup at all; consider:
11562 { template <class V>
11563 friend struct S1; };
11565 Here, the S2::S1 declaration should not be confused with the
11566 outer declaration. In particular, the inner version should
11567 have a template parameter of level 2, not level 1. This
11568 would be particularly important if the member declaration
11571 template <class V = U> friend struct S1;
11573 say, when we should tsubst into `U' when instantiating S2. */
11580 ref
= lookup_tag (code
, name
, b
, 0);
11584 /* Try finding it as a type declaration. If that wins,
11586 ref
= lookup_name (name
, 1);
11588 if (ref
!= NULL_TREE
11589 && processing_template_decl
11590 && DECL_CLASS_TEMPLATE_P (ref
)
11591 && template_class_depth (current_class_type
) == 0)
11592 /* Since GLOBALIZE is true, we're declaring a global
11593 template, so we want this type. */
11594 ref
= DECL_RESULT (ref
);
11596 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11597 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11598 ref
= TREE_TYPE (ref
);
11605 push_obstacks_nochange ();
11609 /* If no such tag is yet defined, create a forward-reference node
11610 and record it as the "definition".
11611 When a real declaration of this type is found,
11612 the forward-reference will be altered into a real type. */
11614 /* In C++, since these migrate into the global scope, we must
11615 build them on the permanent obstack. */
11617 temp
= allocation_temporary_p ();
11619 end_temporary_allocation ();
11621 if (code
== ENUMERAL_TYPE
)
11623 cp_error ("use of enum `%#D' without previous declaration", name
);
11625 ref
= make_node (ENUMERAL_TYPE
);
11627 /* Give the type a default layout like unsigned int
11628 to avoid crashing if it does not get defined. */
11629 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11630 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11631 TREE_UNSIGNED (ref
) = 1;
11632 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11633 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11634 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11636 /* Enable us to recognize when a type is created in class context.
11637 To do nested classes correctly, this should probably be cleared
11638 out when we leave this classes scope. Currently this in only
11639 done in `start_enum'. */
11641 pushtag (name
, ref
, globalize
);
11645 struct binding_level
*old_b
= class_binding_level
;
11647 ref
= make_lang_type (code
);
11649 if (tag_code
== signature_type
)
11651 SET_SIGNATURE (ref
);
11652 /* Since a signature type will be turned into the type
11653 of signature tables, it's not only an interface. */
11654 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11655 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11656 /* A signature doesn't have a vtable. */
11657 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11660 #ifdef NONNESTED_CLASSES
11661 /* Class types don't nest the way enums do. */
11662 class_binding_level
= (struct binding_level
*)0;
11664 pushtag (name
, ref
, globalize
);
11665 class_binding_level
= old_b
;
11670 /* If it no longer looks like a nested type, make sure it's
11672 If it is not an IDENTIFIER, this is not a declaration */
11673 if (b
->namespace_p
&& !class_binding_level
11674 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11676 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11677 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11680 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11681 redeclare_class_template (ref
, current_template_parms
);
11684 /* Until the type is defined, tentatively accept whatever
11685 structure tag the user hands us. */
11686 if (TYPE_SIZE (ref
) == NULL_TREE
11687 && ref
!= current_class_type
11688 /* Have to check this, in case we have contradictory tag info. */
11689 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11691 if (tag_code
== class_type
)
11692 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11693 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11694 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11699 TREE_TYPE (ref
) = attributes
;
11701 if (ref
&& TYPE_P (ref
))
11705 If the identifier resolves to a typedef-name or a template
11706 type-parameter, the elaborated-type-specifier is
11708 if (TYPE_LANG_SPECIFIC (ref
) && TYPE_WAS_ANONYMOUS (ref
))
11709 cp_error ("`%T' is a typedef name", ref
);
11710 else if (TREE_CODE (ref
) == TEMPLATE_TYPE_PARM
)
11711 cp_error ("`%T' is a template type paramter", ref
);
11718 xref_tag_from_type (old
, id
, globalize
)
11722 tree code_type_node
;
11724 if (TREE_CODE (old
) == RECORD_TYPE
)
11725 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11726 ? class_type_node
: record_type_node
);
11728 code_type_node
= union_type_node
;
11730 if (id
== NULL_TREE
)
11731 id
= TYPE_IDENTIFIER (old
);
11733 return xref_tag (code_type_node
, id
, globalize
);
11737 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11738 tree code_type_node
;
11742 /* In the declaration `A : X, Y, ... Z' we mark all the types
11743 (A, X, Y, ..., Z) so we can check for duplicates. */
11746 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11748 if (tag_code
== union_type
)
11750 cp_error ("derived union `%T' invalid", ref
);
11754 len
= list_length (binfo
);
11755 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11757 SET_CLASSTYPE_MARKED (ref
);
11758 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11760 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11762 /* The base of a derived struct is public by default. */
11764 = (TREE_PURPOSE (binfo
) == access_public_node
11765 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11766 || (tag_code
!= class_type
11767 && (TREE_PURPOSE (binfo
) == access_default_node
11768 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11770 = (TREE_PURPOSE (binfo
) == access_protected_node
11771 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11773 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11774 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11775 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11776 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11777 tree basetype
= TREE_VALUE (binfo
);
11780 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11781 basetype
= TREE_TYPE (basetype
);
11783 || (TREE_CODE (basetype
) != RECORD_TYPE
11784 && TREE_CODE (basetype
) != TYPENAME_TYPE
11785 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11786 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11788 cp_error ("base type `%T' fails to be a struct or class type",
11789 TREE_VALUE (binfo
));
11793 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11796 /* This code replaces similar code in layout_basetypes.
11797 We put the complete_type first for implicit `typename'. */
11798 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11799 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11801 cp_error ("base class `%T' has incomplete type", basetype
);
11807 if (CLASSTYPE_MARKED (basetype
))
11809 if (basetype
== ref
)
11810 cp_error ("recursive type `%T' undefined", basetype
);
11812 cp_error ("duplicate base type `%T' invalid", basetype
);
11816 if (TYPE_FOR_JAVA (basetype
)
11817 && current_lang_stack
== current_lang_base
)
11818 TYPE_FOR_JAVA (ref
) = 1;
11820 /* Note that the BINFO records which describe individual
11821 inheritances are *not* shared in the lattice! They
11822 cannot be shared because a given baseclass may be
11823 inherited with different `accessibility' by different
11824 derived classes. (Each BINFO record describing an
11825 individual inheritance contains flags which say what
11826 the `accessibility' of that particular inheritance is.) */
11828 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11829 TYPE_BINFO_VTABLE (basetype
),
11830 TYPE_BINFO_VIRTUALS (basetype
));
11832 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11833 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11834 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11835 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11836 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11838 /* We need to unshare the binfos now so that lookups during class
11839 definition work. */
11840 unshare_base_binfos (base_binfo
);
11842 SET_CLASSTYPE_MARKED (basetype
);
11844 /* We are free to modify these bits because they are meaningless
11845 at top level, and BASETYPE is a top-level type. */
11846 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11848 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11849 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11852 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11853 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11858 TREE_VEC_LENGTH (binfos
) = i
;
11860 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11863 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11865 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11866 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11867 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11868 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11870 /* Unmark all the types. */
11872 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11873 CLEAR_CLASSTYPE_MARKED (ref
);
11879 /* Begin compiling the definition of an enumeration type.
11880 NAME is its name (or null if anonymous).
11881 Returns the type object, as yet incomplete.
11882 Also records info about it so that build_enumerator
11883 may be used to declare the individual values as they are read. */
11889 register tree enumtype
= NULL_TREE
;
11890 struct binding_level
*b
= inner_binding_level
;
11892 /* We are wasting space here and putting these on the permanent_obstack so
11893 that typeid(local enum) will work correctly. */
11895 if (processing_template_decl
&& current_function_decl
)
11898 end_temporary_allocation ();
11900 /* If this is the real definition for a previous forward reference,
11901 fill in the contents in the same object that used to be the
11902 forward reference. */
11904 if (name
!= NULL_TREE
)
11905 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11907 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11908 cp_error ("multiple definition of `%#T'", enumtype
);
11911 enumtype
= make_node (ENUMERAL_TYPE
);
11912 pushtag (name
, enumtype
, 0);
11915 if (current_class_type
)
11916 TREE_ADDRESSABLE (b
->tags
) = 1;
11918 /* We don't copy this value because build_enumerator needs to do it. */
11919 enum_next_value
= integer_zero_node
;
11922 GNU_xref_decl (current_function_decl
, enumtype
);
11926 /* After processing and defining all the values of an enumeration type,
11927 install their decls in the enumeration type and finish it off.
11928 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11929 Returns ENUMTYPE. */
11932 finish_enum (enumtype
)
11935 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11936 /* Calculate the maximum value of any enumerator in this type. */
11938 tree values
= TYPE_VALUES (enumtype
);
11943 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11948 /* The TREE_VALUE is a CONST_DECL for this enumeration
11950 decl
= TREE_VALUE (pair
);
11952 /* The DECL_INITIAL will be NULL if we are processing a
11953 template declaration and this enumeration constant had no
11954 explicit initializer. */
11955 value
= DECL_INITIAL (decl
);
11956 if (value
&& !processing_template_decl
)
11958 /* Set the TREE_TYPE for the VALUE as well. That's so
11959 that when we call decl_constant_value we get an
11960 entity of the right type (but with the constant
11961 value). Since we shouldn't ever call
11962 decl_constant_value on a template type, there's no
11963 reason to do that when processing_template_decl.
11964 And, if the expression is something like a
11965 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
11966 wreak havoc on the intended type of the expression.
11968 Of course, there's also no point in trying to compute
11969 minimum or maximum values if we're in a template. */
11970 TREE_TYPE (value
) = enumtype
;
11973 minnode
= maxnode
= value
;
11974 else if (tree_int_cst_lt (maxnode
, value
))
11976 else if (tree_int_cst_lt (value
, minnode
))
11980 if (processing_template_decl
)
11981 /* If this is just a template, leave the CONST_DECL
11982 alone. That way tsubst_copy will find CONST_DECLs for
11983 CONST_DECLs, and not INTEGER_CSTs. */
11986 /* In the list we're building up, we want the enumeration
11987 values, not the CONST_DECLs. */
11988 TREE_VALUE (pair
) = value
;
11992 maxnode
= minnode
= integer_zero_node
;
11994 TYPE_VALUES (enumtype
) = nreverse (values
);
11996 if (processing_template_decl
)
11998 tree scope
= current_scope ();
11999 if (scope
&& TREE_CODE (scope
) == FUNCTION_DECL
)
12001 add_tree (build_min (TAG_DEFN
, enumtype
));
12002 resume_temporary_allocation ();
12008 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
12009 int lowprec
= min_precision (minnode
, unsignedp
);
12010 int highprec
= min_precision (maxnode
, unsignedp
);
12011 int precision
= MAX (lowprec
, highprec
);
12013 TYPE_SIZE (enumtype
) = NULL_TREE
;
12015 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
12017 TYPE_PRECISION (enumtype
) = precision
;
12019 fixup_unsigned_type (enumtype
);
12021 fixup_signed_type (enumtype
);
12023 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
12024 /* Use the width of the narrowest normal C type which is wide enough. */
12025 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
12028 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
12030 TYPE_SIZE (enumtype
) = 0;
12031 layout_type (enumtype
);
12037 /* Fix up all variant types of this enum type. */
12038 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
12039 tem
= TYPE_NEXT_VARIANT (tem
))
12041 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
12042 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
12043 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
12044 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
12045 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
12046 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
12047 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
12048 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
12049 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
12053 /* Finish debugging output for this type. */
12054 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
12059 /* Build and install a CONST_DECL for an enumeration constant of the
12060 enumeration type TYPE whose NAME and VALUE (if any) are provided.
12061 Assignment of sequential values by default is handled here. */
12064 build_enumerator (name
, value
, type
)
12072 /* Remove no-op casts from the value. */
12074 STRIP_TYPE_NOPS (value
);
12076 if (! processing_template_decl
)
12078 /* Validate and default VALUE. */
12079 if (value
!= NULL_TREE
)
12081 if (TREE_READONLY_DECL_P (value
))
12082 value
= decl_constant_value (value
);
12084 if (TREE_CODE (value
) == INTEGER_CST
)
12086 value
= default_conversion (value
);
12087 constant_expression_warning (value
);
12091 cp_error ("enumerator value for `%D' not integer constant", name
);
12096 /* Default based on previous value. */
12097 if (value
== NULL_TREE
&& ! processing_template_decl
)
12099 value
= enum_next_value
;
12101 cp_error ("overflow in enumeration values at `%D'", name
);
12104 /* Remove no-op casts from the value. */
12106 STRIP_TYPE_NOPS (value
);
12108 /* To fix MAX_VAL enum consts. (bkoz) */
12109 TREE_TYPE (value
) = integer_type_node
;
12113 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12114 Even in other cases, we will later (in finish_enum) be setting the
12116 if (value
!= NULL_TREE
)
12117 value
= copy_node (value
);
12119 /* C++ associates enums with global, function, or class declarations. */
12121 context
= current_scope ();
12122 if (context
&& context
== current_class_type
)
12123 /* This enum declaration is local to the class. */
12124 decl
= build_lang_field_decl (CONST_DECL
, name
, type
);
12126 /* It's a global enum, or it's local to a function. (Note local to
12127 a function could mean local to a class method. */
12128 decl
= build_decl (CONST_DECL
, name
, type
);
12130 DECL_CONTEXT (decl
) = FROB_CONTEXT (context
);
12131 DECL_INITIAL (decl
) = value
;
12132 TREE_READONLY (decl
) = 1;
12134 if (context
&& context
== current_class_type
)
12136 pushdecl_class_level (decl
);
12137 /* In something like `struct S { enum E { i = 7 }; };' we put `i'
12138 on the TYPE_FIELDS list for `S'. (That's so that you can say
12139 things like `S::i' later.) */
12140 finish_member_declaration (decl
);
12145 GNU_xref_decl (current_function_decl
, decl
);
12148 if (! processing_template_decl
)
12150 /* Set basis for default for next value. */
12151 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12152 integer_one_node
, PLUS_EXPR
);
12153 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12156 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12161 static int function_depth
;
12163 /* Create the FUNCTION_DECL for a function definition.
12164 DECLSPECS and DECLARATOR are the parts of the declaration;
12165 they describe the function's name and the type it returns,
12166 but twisted together in a fashion that parallels the syntax of C.
12168 This function creates a binding context for the function body
12169 as well as setting up the FUNCTION_DECL in current_function_decl.
12171 Returns 1 on success. If the DECLARATOR is not suitable for a function
12172 (it defines a datum instead), we return 0, which tells
12173 yyparse to report a parse error.
12175 For C++, we must first check whether that datum makes any sense.
12176 For example, "class A local_a(1,2);" means that variable local_a
12177 is an aggregate of type A, which should have a constructor
12178 applied to it with the argument list [1, 2].
12180 @@ There is currently no way to retrieve the storage
12181 @@ allocated to FUNCTION (or all of its parms) if we return
12182 @@ something we had previously. */
12185 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12186 tree declspecs
, declarator
, attrs
;
12190 tree ctype
= NULL_TREE
;
12193 extern int have_extern_spec
;
12194 extern int used_extern_spec
;
12195 int doing_friend
= 0;
12197 /* Sanity check. */
12198 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12199 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12201 /* Assume, until we see it does. */
12202 current_function_returns_value
= 0;
12203 current_function_returns_null
= 0;
12204 warn_about_return_type
= 0;
12206 shadowed_labels
= 0;
12207 current_function_assigns_this
= 0;
12208 current_function_just_assigned_this
= 0;
12209 current_function_parms_stored
= 0;
12210 original_result_rtx
= NULL_RTX
;
12211 base_init_expr
= NULL_TREE
;
12212 current_base_init_list
= NULL_TREE
;
12213 current_member_init_list
= NULL_TREE
;
12214 ctor_label
= dtor_label
= NULL_TREE
;
12215 static_labelno
= 0;
12217 clear_temp_name ();
12219 /* This should only be done once on the top most decl. */
12220 if (have_extern_spec
&& !used_extern_spec
)
12222 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12223 used_extern_spec
= 1;
12228 decl1
= declarator
;
12231 /* What was this testing for, exactly? */
12232 if (! DECL_ARGUMENTS (decl1
)
12233 && !DECL_STATIC_FUNCTION_P (decl1
)
12234 && !DECL_ARTIFICIAL (decl1
)
12235 && DECL_CLASS_SCOPE_P (decl1
)
12236 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12237 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12239 tree binding
= binding_for_name (DECL_NAME (decl1
),
12240 current_namespace
);
12241 cp_error ("redeclaration of `%#D'", decl1
);
12242 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12243 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12244 else if (BINDING_VALUE (binding
))
12245 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12249 fntype
= TREE_TYPE (decl1
);
12250 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12251 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12253 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12254 class is in the (lexical) scope of the class in which it is
12256 if (!ctype
&& DECL_FRIEND_P (decl1
))
12258 ctype
= DECL_CLASS_CONTEXT (decl1
);
12260 /* CTYPE could be null here if we're dealing with a template;
12261 for example, `inline friend float foo()' inside a template
12262 will have no CTYPE set. */
12263 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12269 /* In a fcn definition, arg types must be complete. */
12270 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12272 /* In case some arg types were completed since the declaration was
12273 parsed, fix up the decls. */
12275 tree t
= DECL_ARGUMENTS (decl1
);
12276 for (; t
; t
= TREE_CHAIN (t
))
12277 layout_decl (t
, 0);
12280 last_function_parms
= DECL_ARGUMENTS (decl1
);
12281 last_function_parm_tags
= NULL_TREE
;
12285 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12286 /* If the declarator is not suitable for a function definition,
12287 cause a syntax error. */
12288 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12290 fntype
= TREE_TYPE (decl1
);
12292 restype
= TREE_TYPE (fntype
);
12293 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12294 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12296 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12297 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12298 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12299 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12300 fntype
= build_function_type (integer_type_node
,
12301 TYPE_ARG_TYPES (fntype
));
12303 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12305 TYPE_ARG_TYPES (fntype
));
12306 TREE_TYPE (decl1
) = fntype
;
12309 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12310 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12311 else if (DECL_MAIN_P (decl1
))
12313 /* If this doesn't return integer_type, complain. */
12314 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12316 if (pedantic
|| warn_return_type
)
12317 pedwarn ("return type for `main' changed to `int'");
12318 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12320 warn_about_return_type
= 0;
12324 /* Warn if function was previously implicitly declared
12325 (but not if we warned then). */
12326 if (! warn_implicit
12327 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12328 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12330 current_function_decl
= decl1
;
12331 /* Save the parm names or decls from this function's declarator
12332 where store_parm_decls will find them. */
12333 current_function_parms
= last_function_parms
;
12334 current_function_parm_tags
= last_function_parm_tags
;
12336 announce_function (decl1
);
12338 if (! processing_template_decl
)
12340 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12342 cp_error ("return-type `%#T' is an incomplete type",
12343 TREE_TYPE (fntype
));
12345 /* Make it return void instead, but don't change the
12346 type of the DECL_RESULT, in case we have a named return value. */
12349 = build_cplus_method_type (build_type_variant (ctype
,
12350 TREE_READONLY (decl1
),
12351 TREE_SIDE_EFFECTS (decl1
)),
12353 FUNCTION_ARG_CHAIN (decl1
));
12356 = build_function_type (void_type_node
,
12357 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12358 DECL_RESULT (decl1
)
12359 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12360 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12361 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12364 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12365 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12366 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12369 if (warn_about_return_type
)
12370 pedwarn ("return-type defaults to `int'");
12372 /* Effective C++ rule 15. See also c_expand_return. */
12374 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12375 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12376 cp_warning ("`operator=' should return a reference to `*this'");
12378 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12379 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12380 DECL_INITIAL (decl1
) = error_mark_node
;
12382 #ifdef SET_DEFAULT_DECL_ATTRIBUTES
12383 SET_DEFAULT_DECL_ATTRIBUTES (decl1
, attrs
);
12386 /* This function exists in static storage.
12387 (This does not mean `static' in the C sense!) */
12388 TREE_STATIC (decl1
) = 1;
12390 /* Set up current_class_type, and enter the scope of the class, if
12393 push_nested_class (ctype
, 1);
12394 else if (DECL_STATIC_FUNCTION_P (decl1
))
12395 push_nested_class (DECL_CONTEXT (decl1
), 2);
12397 /* We must call push_template_decl after current_class_type is set
12398 up. (If we are processing inline definitions after exiting a
12399 class scope, current_class_type will be NULL_TREE until set above
12400 by push_nested_class.) */
12401 if (processing_template_decl
)
12402 decl1
= push_template_decl (decl1
);
12404 /* Record the decl so that the function name is defined.
12405 If we already have a decl for this name, and it is a FUNCTION_DECL,
12406 use the old decl. */
12407 if (!processing_template_decl
&& pre_parsed_p
== 0)
12409 /* A specialization is not used to guide overload resolution. */
12410 if ((flag_guiding_decls
12411 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12412 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12413 decl1
= pushdecl (decl1
);
12416 /* We need to set the DECL_CONTEXT. */
12417 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12418 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12419 /* And make sure we have enough default args. */
12420 check_default_args (decl1
);
12422 DECL_MAIN_VARIANT (decl1
) = decl1
;
12423 fntype
= TREE_TYPE (decl1
);
12426 current_function_decl
= decl1
;
12428 if (DECL_INTERFACE_KNOWN (decl1
))
12430 tree ctx
= hack_decl_function_context (decl1
);
12432 if (DECL_NOT_REALLY_EXTERN (decl1
))
12433 DECL_EXTERNAL (decl1
) = 0;
12435 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12436 && TREE_PUBLIC (ctx
))
12437 /* This is a function in a local class in an extern inline
12439 comdat_linkage (decl1
);
12441 /* If this function belongs to an interface, it is public.
12442 If it belongs to someone else's interface, it is also external.
12443 It doesn't matter whether it's inline or not. */
12444 else if (interface_unknown
== 0
12445 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12446 || flag_alt_external_templates
))
12448 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12449 || processing_template_decl
)
12450 DECL_EXTERNAL (decl1
)
12452 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12454 DECL_EXTERNAL (decl1
) = 0;
12455 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12456 DECL_INTERFACE_KNOWN (decl1
) = 1;
12460 /* This is a definition, not a reference.
12461 So clear DECL_EXTERNAL. */
12462 DECL_EXTERNAL (decl1
) = 0;
12464 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12465 && ! DECL_INTERFACE_KNOWN (decl1
)
12466 /* Don't try to defer nested functions for now. */
12467 && ! hack_decl_function_context (decl1
))
12468 DECL_DEFER_OUTPUT (decl1
) = 1;
12470 DECL_INTERFACE_KNOWN (decl1
) = 1;
12473 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12475 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12476 TREE_TYPE (decl1
) = fntype
12477 = build_function_type (TREE_TYPE (fntype
),
12478 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12479 current_function_parms
= TREE_CHAIN (current_function_parms
);
12480 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12483 restype
= TREE_TYPE (fntype
);
12487 /* If we're compiling a friend function, neither of the variables
12488 current_class_ptr nor current_class_type will have values. */
12489 if (! doing_friend
)
12491 /* We know that this was set up by `grokclassfn'.
12492 We do not wait until `store_parm_decls', since evil
12493 parse errors may never get us to that point. Here
12494 we keep the consistency between `current_class_type'
12495 and `current_class_ptr'. */
12496 tree t
= current_function_parms
;
12498 my_friendly_assert (t
!= NULL_TREE
12499 && TREE_CODE (t
) == PARM_DECL
, 162);
12501 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12503 int i
= suspend_momentary ();
12505 /* Fool build_indirect_ref. */
12506 current_class_ptr
= NULL_TREE
;
12507 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12508 current_class_ptr
= t
;
12509 resume_momentary (i
);
12512 /* We're having a signature pointer here. */
12513 current_class_ref
= current_class_ptr
= t
;
12519 current_class_ptr
= current_class_ref
= NULL_TREE
;
12523 current_binding_level
->parm_flag
= 1;
12525 GNU_xref_function (decl1
, current_function_parms
);
12528 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12530 make_function_rtl (decl1
);
12532 /* Promote the value to int before returning it. */
12533 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12534 restype
= type_promotes_to (restype
);
12536 /* If this fcn was already referenced via a block-scope `extern' decl
12537 (or an implicit decl), propagate certain information about the usage. */
12538 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12539 TREE_ADDRESSABLE (decl1
) = 1;
12541 if (DECL_RESULT (decl1
) == NULL_TREE
)
12543 DECL_RESULT (decl1
)
12544 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12545 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12546 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12549 /* Allocate further tree nodes temporarily during compilation
12550 of this function only. Tiemann moved up here from bottom of fn. */
12551 /* If this is a nested function, then we must continue to allocate RTL
12552 on the permanent obstack in case we need to inline it later. */
12553 if (! hack_decl_function_context (decl1
))
12554 temporary_allocation ();
12556 if (processing_template_decl
)
12558 ++minimal_parse_mode
;
12559 last_tree
= DECL_SAVED_TREE (decl1
)
12560 = build_nt (EXPR_STMT
, void_zero_node
);
12565 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12566 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12568 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12569 ctor_label
= NULL_TREE
;
12573 dtor_label
= NULL_TREE
;
12574 if (DECL_CONSTRUCTOR_P (decl1
))
12575 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12581 /* Called after store_parm_decls for a function-try-block. We need to update
12582 last_parm_cleanup_insn so that the base initializers for a constructor
12583 are run within this block, not before it. */
12586 expand_start_early_try_stmts ()
12588 expand_start_try_stmts ();
12589 last_parm_cleanup_insn
= get_last_insn ();
12592 /* Store the parameter declarations into the current function declaration.
12593 This is called after parsing the parameter declarations, before
12594 digesting the body of the function.
12596 Also install to binding contour return value identifier, if any. */
12599 store_parm_decls ()
12601 register tree fndecl
= current_function_decl
;
12602 register tree parm
;
12603 int parms_have_cleanups
= 0;
12604 tree cleanups
= NULL_TREE
;
12606 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12607 tree specparms
= current_function_parms
;
12609 /* This is a list of types declared among parms in a prototype. */
12610 tree parmtags
= current_function_parm_tags
;
12612 /* This is a chain of any other decls that came in among the parm
12613 declarations. If a parm is declared with enum {foo, bar} x;
12614 then CONST_DECLs for foo and bar are put here. */
12615 tree nonparms
= NULL_TREE
;
12617 if (toplevel_bindings_p ())
12618 fatal ("parse errors have confused me too much");
12620 /* Initialize RTL machinery. */
12621 init_function_start (fndecl
, input_filename
, lineno
);
12623 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12624 declare_function_name ();
12626 /* Create a binding level for the parms. */
12627 expand_start_bindings (0);
12629 if (specparms
!= NULL_TREE
)
12631 /* This case is when the function was defined with an ANSI prototype.
12632 The parms already have decls, so we need not do anything here
12633 except record them as in effect
12634 and complain if any redundant old-style parm decls were written. */
12636 register tree next
;
12638 /* Must clear this because it might contain TYPE_DECLs declared
12640 storedecls (NULL_TREE
);
12642 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12644 next
= TREE_CHAIN (parm
);
12645 if (TREE_CODE (parm
) == PARM_DECL
)
12648 if (DECL_NAME (parm
) == NULL_TREE
)
12652 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12653 cp_error ("parameter `%D' declared void", parm
);
12656 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12657 A parameter is assumed not to have any side effects.
12658 If this should change for any reason, then this
12659 will have to wrap the bashed reference type in a save_expr.
12661 Also, if the parameter type is declared to be an X
12662 and there is an X(X&) constructor, we cannot lay it
12663 into the stack (any more), so we make this parameter
12664 look like it is really of reference type. Functions
12665 which pass parameters to this function will know to
12666 create a temporary in their frame, and pass a reference
12669 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12670 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12671 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12675 if (! processing_template_decl
12676 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12678 expand_decl (parm
);
12679 parms_have_cleanups
= 1;
12681 /* Keep track of the cleanups. */
12682 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12687 /* If we find an enum constant or a type tag,
12688 put it aside for the moment. */
12689 TREE_CHAIN (parm
) = NULL_TREE
;
12690 nonparms
= chainon (nonparms
, parm
);
12694 /* Get the decls in their original chain order
12695 and record in the function. This is all and only the
12696 PARM_DECLs that were pushed into scope by the loop above. */
12697 DECL_ARGUMENTS (fndecl
) = getdecls ();
12699 storetags (chainon (parmtags
, gettags ()));
12702 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12704 /* Now store the final chain of decls for the arguments
12705 as the decl-chain of the current lexical scope.
12706 Put the enumerators in as well, at the front so that
12707 DECL_ARGUMENTS is not modified. */
12709 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12711 /* Initialize the RTL code for the function. */
12712 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12713 if (! processing_template_decl
)
12714 expand_function_start (fndecl
, parms_have_cleanups
);
12716 current_function_parms_stored
= 1;
12718 /* If this function is `main', emit a call to `__main'
12719 to run global initializers, etc. */
12720 if (DECL_MAIN_P (fndecl
))
12721 expand_main_function ();
12723 /* Now that we have initialized the parms, we can start their
12724 cleanups. We cannot do this before, since expand_decl_cleanup
12725 should not be called before the parm can be used. */
12727 && ! processing_template_decl
)
12729 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12731 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12732 cp_error ("parser lost in parsing declaration of `%D'",
12733 TREE_PURPOSE (cleanups
));
12737 /* Create a binding contour which can be used to catch
12738 cleanup-generated temporaries. Also, if the return value needs or
12739 has initialization, deal with that now. */
12740 if (parms_have_cleanups
)
12743 expand_start_bindings (0);
12746 if (! processing_template_decl
&& flag_exceptions
)
12748 /* Do the starting of the exception specifications, if we have any. */
12749 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12750 expand_start_eh_spec ();
12753 last_parm_cleanup_insn
= get_last_insn ();
12754 last_dtor_insn
= get_last_insn ();
12757 /* Bind a name and initialization to the return value of
12758 the current function. */
12761 store_return_init (return_id
, init
)
12762 tree return_id
, init
;
12764 tree decl
= DECL_RESULT (current_function_decl
);
12767 /* Give this error as many times as there are occurrences,
12768 so that users can use Emacs compilation buffers to find
12769 and fix all such places. */
12770 pedwarn ("ANSI C++ does not permit named return values");
12772 if (return_id
!= NULL_TREE
)
12774 if (DECL_NAME (decl
) == NULL_TREE
)
12776 DECL_NAME (decl
) = return_id
;
12777 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12780 cp_error ("return identifier `%D' already in place", decl
);
12783 /* Can't let this happen for constructors. */
12784 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12786 error ("can't redefine default return value for constructors");
12790 /* If we have a named return value, put that in our scope as well. */
12791 if (DECL_NAME (decl
) != NULL_TREE
)
12793 /* If this named return value comes in a register,
12794 put it in a pseudo-register. */
12795 if (DECL_REGISTER (decl
))
12797 original_result_rtx
= DECL_RTL (decl
);
12798 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12801 /* Let `cp_finish_decl' know that this initializer is ok. */
12802 DECL_INITIAL (decl
) = init
;
12805 if (minimal_parse_mode
)
12806 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12807 copy_to_permanent (init
)));
12809 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12814 /* Finish up a function declaration and compile that function
12815 all the way to assembler language output. The free the storage
12816 for the function definition.
12818 This is called after parsing the body of the function definition.
12819 LINENO is the current line number.
12821 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12822 (and expand_end_bindings) must be made to take care of the binding
12823 contour for the base initializers. This is only relevant for
12826 NESTED is nonzero if we were in the middle of compiling another function
12827 when we started on this one. */
12830 finish_function (lineno
, call_poplevel
, nested
)
12835 register tree fndecl
= current_function_decl
;
12836 tree fntype
, ctype
= NULL_TREE
;
12837 rtx last_parm_insn
, insns
;
12838 /* Label to use if this function is supposed to return a value. */
12839 tree no_return_label
= NULL_TREE
;
12840 tree decls
= NULL_TREE
;
12842 /* When we get some parse errors, we can end up without a
12843 current_function_decl, so cope. */
12844 if (fndecl
== NULL_TREE
)
12847 if (! nested
&& function_depth
> 1)
12850 fntype
= TREE_TYPE (fndecl
);
12852 /* TREE_READONLY (fndecl) = 1;
12853 This caused &foo to be of type ptr-to-const-function
12854 which then got a warning when stored in a ptr-to-function variable. */
12856 /* This happens on strange parse errors. */
12857 if (! current_function_parms_stored
)
12860 store_parm_decls ();
12863 if (processing_template_decl
)
12865 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12867 decls
= getdecls ();
12868 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12869 poplevel (decls
!= NULL_TREE
, 0, 0);
12874 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12876 tree ttype
= target_type (fntype
);
12879 if (IS_AGGR_TYPE (ttype
))
12880 /* Let debugger know it should output info for this type. */
12881 note_debug_info_needed (ttype
);
12883 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12885 ttype
= target_type (TREE_TYPE (parmdecl
));
12886 if (IS_AGGR_TYPE (ttype
))
12887 /* Let debugger know it should output info for this type. */
12888 note_debug_info_needed (ttype
);
12892 /* Clean house because we will need to reorder insns here. */
12893 do_pending_stack_adjust ();
12897 tree binfo
= TYPE_BINFO (current_class_type
);
12898 tree cond
= integer_one_node
;
12900 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12902 int ok_to_optimize_dtor
= 0;
12903 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12905 if (current_function_assigns_this
)
12906 cond
= build (NE_EXPR
, boolean_type_node
,
12907 current_class_ptr
, integer_zero_node
);
12910 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12912 /* If this destructor is empty, then we don't need to check
12913 whether `this' is NULL in some cases. */
12914 if ((flag_this_is_variable
& 1) == 0)
12915 ok_to_optimize_dtor
= 1;
12916 else if (empty_dtor
)
12917 ok_to_optimize_dtor
12918 = (n_baseclasses
== 0
12919 || (n_baseclasses
== 1
12920 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12923 /* These initializations might go inline. Protect
12924 the binding level of the parms. */
12926 expand_start_bindings (0);
12928 if (current_function_assigns_this
)
12930 current_function_assigns_this
= 0;
12931 current_function_just_assigned_this
= 0;
12934 /* Generate the code to call destructor on base class.
12935 If this destructor belongs to a class with virtual
12936 functions, then set the virtual function table
12937 pointer to represent the type of our base class. */
12939 /* This side-effect makes call to `build_delete' generate the
12940 code we have to have at the end of this destructor. */
12941 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12943 /* These are two cases where we cannot delegate deletion. */
12944 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12945 || TYPE_GETS_REG_DELETE (current_class_type
))
12946 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12947 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12949 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12950 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12952 /* If we did not assign to this, then `this' is non-zero at
12953 the end of a destructor. As a special optimization, don't
12954 emit test if this is an empty destructor. If it does nothing,
12955 it does nothing. If it calls a base destructor, the base
12956 destructor will perform the test. */
12958 if (exprstmt
!= error_mark_node
12959 && (TREE_CODE (exprstmt
) != NOP_EXPR
12960 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12961 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12963 expand_label (dtor_label
);
12964 if (cond
!= integer_one_node
)
12965 expand_start_cond (cond
, 0);
12966 if (exprstmt
!= void_zero_node
)
12967 /* Don't call `expand_expr_stmt' if we're not going to do
12968 anything, since -Wall will give a diagnostic. */
12969 expand_expr_stmt (exprstmt
);
12971 /* Run destructor on all virtual baseclasses. */
12972 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12974 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12975 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12976 in_charge_node
, integer_two_node
), 0);
12979 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12981 tree vb
= get_vbase
12982 (BINFO_TYPE (vbases
),
12983 TYPE_BINFO (current_class_type
));
12985 (build_scoped_method_call
12986 (current_class_ref
, vb
, dtor_identifier
,
12987 build_expr_list (NULL_TREE
, integer_zero_node
)));
12989 vbases
= TREE_CHAIN (vbases
);
12991 expand_end_cond ();
12994 do_pending_stack_adjust ();
12995 if (cond
!= integer_one_node
)
12996 expand_end_cond ();
12999 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
13001 virtual_size
= c_sizeof (current_class_type
);
13003 /* At the end, call delete if that's what's requested. */
13005 /* FDIS sez: At the point of definition of a virtual destructor
13006 (including an implicit definition), non-placement operator
13007 delete shall be looked up in the scope of the destructor's
13008 class and if found shall be accessible and unambiguous.
13010 This is somewhat unclear, but I take it to mean that if the
13011 class only defines placement deletes we don't do anything here.
13012 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
13013 for us if they ever try to delete one of these. */
13015 if (TYPE_GETS_REG_DELETE (current_class_type
)
13016 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13017 exprstmt
= build_op_delete_call
13018 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
13019 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
13021 exprstmt
= NULL_TREE
;
13025 cond
= build (BIT_AND_EXPR
, integer_type_node
,
13026 in_charge_node
, integer_one_node
);
13027 expand_start_cond (cond
, 0);
13028 expand_expr_stmt (exprstmt
);
13029 expand_end_cond ();
13032 /* End of destructor. */
13033 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
13034 poplevel (2, 0, 0); /* XXX change to 1 */
13036 /* Back to the top of destructor. */
13037 /* Don't execute destructor code if `this' is NULL. */
13041 /* If the dtor is empty, and we know there is not possible way we
13042 could use any vtable entries, before they are possibly set by
13043 a base class dtor, we don't have to setup the vtables, as we
13044 know that any base class dtoring will set up any vtables it
13045 needs. We avoid MI, because one base class dtor can do a
13046 virtual dispatch to an overridden function that would need to
13047 have a non-related vtable set up, we cannot avoid setting up
13048 vtables in that case. We could change this to see if there is
13049 just one vtable. */
13050 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13052 /* Make all virtual function table pointers in non-virtual base
13053 classes point to CURRENT_CLASS_TYPE's virtual function
13055 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13057 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13058 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13061 if (! ok_to_optimize_dtor
)
13063 cond
= build_binary_op (NE_EXPR
,
13064 current_class_ptr
, integer_zero_node
, 1);
13065 expand_start_cond (cond
, 0);
13068 insns
= get_insns ();
13071 last_parm_insn
= get_first_nonparm_insn ();
13072 if (last_parm_insn
== NULL_RTX
)
13073 last_parm_insn
= get_last_insn ();
13075 last_parm_insn
= previous_insn (last_parm_insn
);
13077 emit_insns_after (insns
, last_parm_insn
);
13079 if (! ok_to_optimize_dtor
)
13080 expand_end_cond ();
13082 else if (current_function_assigns_this
)
13084 /* Does not need to call emit_base_init, because
13085 that is done (if needed) just after assignment to this
13088 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13090 end_protect_partials ();
13091 expand_label (ctor_label
);
13092 ctor_label
= NULL_TREE
;
13096 decls
= getdecls ();
13097 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13098 poplevel (decls
!= NULL_TREE
, 0, 0);
13100 /* c_expand_return knows to return 'this' from a constructor. */
13101 c_expand_return (NULL_TREE
);
13103 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13104 && return_label
!= NULL_RTX
)
13105 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13107 current_function_assigns_this
= 0;
13108 current_function_just_assigned_this
= 0;
13109 base_init_expr
= NULL_TREE
;
13111 else if (DECL_CONSTRUCTOR_P (fndecl
))
13113 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13114 /* Allow constructor for a type to get a new instance of the object
13115 using `build_new'. */
13116 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13117 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13119 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13121 if (flag_this_is_variable
> 0)
13123 cond
= build_binary_op (EQ_EXPR
,
13124 current_class_ptr
, integer_zero_node
, 1);
13125 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13126 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13129 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13133 if (flag_this_is_variable
> 0)
13135 expand_start_cond (cond
, 0);
13136 expand_expr_stmt (thenclause
);
13137 expand_end_cond ();
13140 /* Emit insns from `emit_base_init' which sets up virtual
13141 function table pointer(s). */
13142 if (base_init_expr
)
13144 expand_expr_stmt (base_init_expr
);
13145 base_init_expr
= NULL_TREE
;
13148 insns
= get_insns ();
13151 /* This is where the body of the constructor begins. */
13153 emit_insns_after (insns
, last_parm_cleanup_insn
);
13155 end_protect_partials ();
13157 /* This is where the body of the constructor ends. */
13158 expand_label (ctor_label
);
13159 ctor_label
= NULL_TREE
;
13163 decls
= getdecls ();
13164 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13165 poplevel (decls
!= NULL_TREE
, 1, 0);
13168 /* c_expand_return knows to return 'this' from a constructor. */
13169 c_expand_return (NULL_TREE
);
13171 current_function_assigns_this
= 0;
13172 current_function_just_assigned_this
= 0;
13174 else if (DECL_MAIN_P (fndecl
))
13176 /* Make it so that `main' always returns 0 by default. */
13178 c_expand_return (integer_one_node
);
13180 c_expand_return (integer_zero_node
);
13183 else if (return_label
!= NULL_RTX
13184 && current_function_return_value
== NULL_TREE
13185 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13186 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13188 if (flag_exceptions
)
13189 expand_exception_blocks ();
13191 /* If this function is supposed to return a value, ensure that
13192 we do not fall into the cleanups by mistake. The end of our
13193 function will look like this:
13195 user code (may have return stmt somewhere)
13196 goto no_return_label
13201 NOTE_INSN_FUNCTION_END
13205 If the user omits a return stmt in the USER CODE section, we
13206 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13207 Otherwise, we won't. */
13208 if (no_return_label
)
13210 DECL_CONTEXT (no_return_label
) = fndecl
;
13211 DECL_INITIAL (no_return_label
) = error_mark_node
;
13212 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13213 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13214 expand_goto (no_return_label
);
13219 /* Remove the binding contour which is used
13220 to catch cleanup-generated temporaries. */
13221 expand_end_bindings (0, 0, 0);
13222 poplevel (0, 0, 0);
13224 /* Emit label at beginning of cleanup code for parameters. */
13225 emit_label (cleanup_label
);
13228 /* Get return value into register if that's where it's supposed to be. */
13229 if (original_result_rtx
)
13230 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13232 /* Finish building code that will trigger warnings if users forget
13233 to make their functions return values. */
13234 if (no_return_label
|| cleanup_label
)
13235 emit_jump (return_label
);
13236 if (no_return_label
)
13238 /* We don't need to call `expand_*_return' here because we
13239 don't need any cleanups here--this path of code is only
13240 for error checking purposes. */
13241 expand_label (no_return_label
);
13244 /* Generate rtl for function exit. */
13245 expand_function_end (input_filename
, lineno
, 1);
13248 /* This must come after expand_function_end because cleanups might
13249 have declarations (from inline functions) that need to go into
13250 this function's blocks. */
13251 if (current_binding_level
->parm_flag
!= 1)
13252 my_friendly_abort (122);
13253 poplevel (1, 0, 1);
13255 /* Reset scope for C++: if we were in the scope of a class,
13256 then when we finish this function, we are not longer so.
13257 This cannot be done until we know for sure that no more
13258 class members will ever be referenced in this function
13259 (i.e., calls to destructors). */
13260 if (current_class_name
)
13262 ctype
= current_class_type
;
13263 pop_nested_class (1);
13266 /* Must mark the RESULT_DECL as being in this function. */
13267 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13269 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13270 to the FUNCTION_DECL node itself. */
13271 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13273 if (! processing_template_decl
)
13275 int saved_flag_keep_inline_functions
=
13276 flag_keep_inline_functions
;
13278 /* So we can tell if jump_optimize sets it to 1. */
13281 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13282 && hack_decl_function_context (fndecl
))
13283 /* Trick rest_of_compilation into not deferring output of this
13284 function, even if it is inline, since the rtl_obstack for
13285 this function is the function_obstack of the enclosing
13286 function and will be deallocated when the enclosing
13287 function is gone. See save_tree_status. */
13288 flag_keep_inline_functions
= 1;
13290 /* Run the optimizers and output the assembler code for this
13293 if (DECL_ARTIFICIAL (fndecl
))
13295 /* Do we really *want* to inline this synthesized method? */
13297 int save_fif
= flag_inline_functions
;
13298 flag_inline_functions
= 1;
13300 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13301 will check our size. */
13302 DECL_INLINE (fndecl
) = 0;
13304 rest_of_compilation (fndecl
);
13305 flag_inline_functions
= save_fif
;
13308 rest_of_compilation (fndecl
);
13310 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13312 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13314 /* Set DECL_EXTERNAL so that assemble_external will be called as
13315 necessary. We'll clear it again in finish_file. */
13316 if (! DECL_EXTERNAL (fndecl
))
13317 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13318 DECL_EXTERNAL (fndecl
) = 1;
13319 mark_inline_for_output (fndecl
);
13322 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13323 note_debug_info_needed (ctype
);
13325 current_function_returns_null
|= can_reach_end
;
13327 /* Since we don't normally go through c_expand_return for constructors,
13328 this normally gets the wrong value.
13329 Also, named return values have their return codes emitted after
13330 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13331 if (DECL_CONSTRUCTOR_P (fndecl
)
13332 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13333 current_function_returns_null
= 0;
13335 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13336 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13337 else if ((warn_return_type
|| pedantic
)
13338 && current_function_returns_null
13339 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13341 /* If this function returns non-void and control can drop through,
13343 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13345 /* With just -W, complain only if function returns both with
13346 and without a value. */
13347 else if (extra_warnings
13348 && current_function_returns_value
&& current_function_returns_null
)
13349 warning ("this function may return with or without a value");
13354 /* Free all the tree nodes making up this function. */
13355 /* Switch back to allocating nodes permanently
13356 until we start another function. */
13357 if (processing_template_decl
)
13359 --minimal_parse_mode
;
13360 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13364 permanent_allocation (1);
13366 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13370 /* Stop pointing to the local nodes about to be freed. */
13371 /* But DECL_INITIAL must remain nonzero so we know this
13372 was an actual function definition. */
13373 DECL_INITIAL (fndecl
) = error_mark_node
;
13374 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13375 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13378 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13379 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13380 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13381 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13385 /* Let the error reporting routines know that we're outside a
13386 function. For a nested function, this value is used in
13387 pop_cp_function_context and then reset via pop_function_context. */
13388 current_function_decl
= NULL_TREE
;
13391 named_label_uses
= NULL
;
13392 current_class_ptr
= NULL_TREE
;
13393 current_class_ref
= NULL_TREE
;
13396 /* Create the FUNCTION_DECL for a function definition.
13397 LINE1 is the line number that the definition absolutely begins on.
13398 LINE2 is the line number that the name of the function appears on.
13399 DECLSPECS and DECLARATOR are the parts of the declaration;
13400 they describe the return type and the name of the function,
13401 but twisted together in a fashion that parallels the syntax of C.
13403 This function creates a binding context for the function body
13404 as well as setting up the FUNCTION_DECL in current_function_decl.
13406 Returns a FUNCTION_DECL on success.
13408 If the DECLARATOR is not suitable for a function (it defines a datum
13409 instead), we return 0, which tells yyparse to report a parse error.
13411 May return void_type_node indicating that this method is actually
13412 a friend. See grokfield for more details.
13414 Came here with a `.pushlevel' .
13416 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13417 CHANGES TO CODE IN `grokfield'. */
13420 start_method (declspecs
, declarator
, attrlist
)
13421 tree declarator
, declspecs
, attrlist
;
13423 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13426 /* Something too ugly to handle. */
13427 if (fndecl
== NULL_TREE
)
13430 /* Pass friends other than inline friend functions back. */
13431 if (fndecl
== void_type_node
)
13434 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13435 /* Not a function, tell parser to report parse error. */
13438 if (IS_SIGNATURE (current_class_type
))
13439 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13441 if (DECL_IN_AGGR_P (fndecl
))
13443 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13445 if (DECL_CONTEXT (fndecl
)
13446 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13447 cp_error ("`%D' is already defined in class %s", fndecl
,
13448 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13450 return void_type_node
;
13453 DECL_THIS_INLINE (fndecl
) = 1;
13455 if (flag_default_inline
)
13456 DECL_INLINE (fndecl
) = 1;
13458 /* We process method specializations in finish_struct_1. */
13459 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13460 fndecl
= push_template_decl (fndecl
);
13462 /* We read in the parameters on the maybepermanent_obstack,
13463 but we won't be getting back to them until after we
13464 may have clobbered them. So the call to preserve_data
13465 will keep them safe. */
13468 if (! DECL_FRIEND_P (fndecl
))
13470 if (TREE_CHAIN (fndecl
))
13472 fndecl
= copy_node (fndecl
);
13473 TREE_CHAIN (fndecl
) = NULL_TREE
;
13476 if (DECL_CONSTRUCTOR_P (fndecl
))
13478 if (! grok_ctor_properties (current_class_type
, fndecl
))
13479 return void_type_node
;
13481 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13482 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13485 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13487 /* Make a place for the parms */
13489 current_binding_level
->parm_flag
= 1;
13491 DECL_IN_AGGR_P (fndecl
) = 1;
13495 /* Go through the motions of finishing a function definition.
13496 We don't compile this method until after the whole class has
13499 FINISH_METHOD must return something that looks as though it
13500 came from GROKFIELD (since we are defining a method, after all).
13502 This is called after parsing the body of the function definition.
13503 STMTS is the chain of statements that makes up the function body.
13505 DECL is the ..._DECL that `start_method' provided. */
13508 finish_method (decl
)
13511 register tree fndecl
= decl
;
13514 register tree link
;
13516 if (decl
== void_type_node
)
13519 old_initial
= DECL_INITIAL (fndecl
);
13521 /* Undo the level for the parms (from start_method).
13522 This is like poplevel, but it causes nothing to be
13523 saved. Saving information here confuses symbol-table
13524 output routines. Besides, this information will
13525 be correctly output when this method is actually
13528 /* Clear out the meanings of the local variables of this level;
13529 also record in each decl which block it belongs to. */
13531 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13533 if (DECL_NAME (link
) != NULL_TREE
)
13534 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13535 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13536 DECL_CONTEXT (link
) = NULL_TREE
;
13539 /* Restore all name-meanings of the outer levels
13540 that were shadowed by this level. */
13542 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13543 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13544 for (link
= current_binding_level
->class_shadowed
;
13545 link
; link
= TREE_CHAIN (link
))
13546 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13547 for (link
= current_binding_level
->type_shadowed
;
13548 link
; link
= TREE_CHAIN (link
))
13549 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13551 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13552 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13553 current_binding_level
->parm_flag
,
13554 current_binding_level
->keep
);
13556 poplevel (0, 0, 0);
13558 DECL_INITIAL (fndecl
) = old_initial
;
13560 /* We used to check if the context of FNDECL was different from
13561 current_class_type as another way to get inside here. This didn't work
13562 for String.cc in libg++. */
13563 if (DECL_FRIEND_P (fndecl
))
13565 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13566 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13567 decl
= void_type_node
;
13573 /* Called when a new struct TYPE is defined.
13574 If this structure or union completes the type of any previous
13575 variable declaration, lay it out and output its rtl. */
13578 hack_incomplete_structures (type
)
13583 if (current_binding_level
->incomplete
== NULL_TREE
)
13586 if (!type
) /* Don't do this for class templates. */
13589 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13591 tree decl
= TREE_VALUE (*list
);
13592 if ((decl
&& TREE_TYPE (decl
) == type
)
13593 || (TREE_TYPE (decl
)
13594 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13595 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13597 int toplevel
= toplevel_bindings_p ();
13598 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13599 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13600 layout_type (TREE_TYPE (decl
));
13601 layout_decl (decl
, 0);
13602 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13606 expand_decl (decl
);
13607 cleanup
= maybe_build_cleanup (decl
);
13608 expand_decl_init (decl
);
13609 if (! expand_decl_cleanup (decl
, cleanup
))
13610 cp_error ("parser lost in parsing declaration of `%D'",
13613 *list
= TREE_CHAIN (*list
);
13616 list
= &TREE_CHAIN (*list
);
13620 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13621 See build_delete for information about AUTO_DELETE.
13623 Don't build these on the momentary obstack; they must live
13624 the life of the binding contour. */
13627 maybe_build_cleanup_1 (decl
, auto_delete
)
13628 tree decl
, auto_delete
;
13630 tree type
= TREE_TYPE (decl
);
13631 if (TYPE_NEEDS_DESTRUCTOR (type
))
13633 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13636 if (TREE_CODE (decl
) != PARM_DECL
)
13637 temp
= suspend_momentary ();
13639 if (TREE_CODE (type
) == ARRAY_TYPE
)
13643 mark_addressable (decl
);
13644 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13647 /* Optimize for space over speed here. */
13648 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13649 || flag_expensive_optimizations
)
13650 flags
|= LOOKUP_NONVIRTUAL
;
13652 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13654 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13655 && ! TYPE_HAS_DESTRUCTOR (type
))
13656 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13657 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13659 if (TREE_CODE (decl
) != PARM_DECL
)
13660 resume_momentary (temp
);
13667 /* If DECL is of a type which needs a cleanup, build that cleanup
13668 here. The cleanup does free the storage with a call to delete. */
13671 maybe_build_cleanup_and_delete (decl
)
13674 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13677 /* If DECL is of a type which needs a cleanup, build that cleanup
13678 here. The cleanup does not free the storage with a call a delete. */
13681 maybe_build_cleanup (decl
)
13684 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13687 /* Expand a C++ expression at the statement level.
13688 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13689 The C++ type checker should get all of these out when
13690 expressions are combined with other, type-providing, expressions,
13691 leaving only orphan expressions, such as:
13693 &class::bar; / / takes its address, but does nothing with it. */
13696 cplus_expand_expr_stmt (exp
)
13699 if (processing_template_decl
)
13701 add_tree (build_min_nt (EXPR_STMT
, exp
));
13705 /* Arrange for all temps to disappear. */
13706 expand_start_target_temps ();
13708 if (TREE_TYPE (exp
) == unknown_type_node
)
13710 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13711 error ("address of overloaded function with no contextual type information");
13712 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13713 warning ("useless reference to a member function name, did you forget the ()?");
13717 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13719 cp_warning ("reference, not call, to function `%D'", exp
);
13720 warning ("at this point in file");
13724 /* We should do this eventually, but right now this causes regex.o from
13725 libg++ to miscompile, and tString to core dump. */
13726 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13729 /* Strip unused implicit INDIRECT_REFs of references. */
13730 if (TREE_CODE (exp
) == INDIRECT_REF
13731 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13732 exp
= TREE_OPERAND (exp
, 0);
13734 /* If we don't do this, we end up down inside expand_expr
13735 trying to do TYPE_MODE on the ERROR_MARK, and really
13736 go outside the bounds of the type. */
13737 if (exp
!= error_mark_node
)
13738 expand_expr_stmt (break_out_cleanups (exp
));
13741 /* Clean up any pending cleanups. This happens when a function call
13742 returns a cleanup-needing value that nobody uses. */
13743 expand_end_target_temps ();
13746 /* When a stmt has been parsed, this function is called.
13748 Currently, this function only does something within a
13749 constructor's scope: if a stmt has just assigned to this,
13750 and we are in a derived class, we call `emit_base_init'. */
13755 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13758 if (current_function_assigns_this
13759 || ! current_function_just_assigned_this
)
13761 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13763 /* Constructors must wait until we are out of control
13764 zones before calling base constructors. */
13765 if (cond_stack
|| loop_stack
|| case_stack
)
13767 expand_expr_stmt (base_init_expr
);
13768 check_base_init (current_class_type
);
13770 current_function_assigns_this
= 1;
13773 /* Change a static member function definition into a FUNCTION_TYPE, instead
13774 of the METHOD_TYPE that we create when it's originally parsed.
13776 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13777 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13778 other decls. Either pass the addresses of local variables or NULL. */
13781 revert_static_member_fn (decl
, fn
, argtypes
)
13782 tree
*decl
, *fn
, *argtypes
;
13785 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13786 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13788 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13789 cp_error ("static member function `%#D' declared const", *decl
);
13790 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13791 cp_error ("static member function `%#D' declared volatile", *decl
);
13793 args
= TREE_CHAIN (args
);
13794 tmp
= build_function_type (TREE_TYPE (function
), args
);
13795 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13796 TYPE_VOLATILE (function
));
13797 tmp
= build_exception_variant (tmp
,
13798 TYPE_RAISES_EXCEPTIONS (function
));
13799 TREE_TYPE (*decl
) = tmp
;
13800 if (DECL_ARGUMENTS (*decl
))
13801 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13802 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13810 id_in_current_class (id
)
13813 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13820 int warn_about_return_type
;
13822 int just_assigned_this
;
13824 int temp_name_counter
;
13826 tree shadowed_labels
;
13829 rtx last_dtor_insn
;
13830 rtx last_parm_cleanup_insn
;
13831 tree base_init_list
;
13832 tree member_init_list
;
13833 tree base_init_expr
;
13834 tree current_class_ptr
;
13835 tree current_class_ref
;
13837 struct cp_function
*next
;
13838 struct binding_level
*binding_level
;
13839 int static_labelno
;
13842 static struct cp_function
*cp_function_chain
;
13844 extern int temp_name_counter
;
13846 /* Save and reinitialize the variables
13847 used during compilation of a C++ function. */
13850 push_cp_function_context (context
)
13853 struct cp_function
*p
13854 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13856 push_function_context_to (context
);
13858 p
->next
= cp_function_chain
;
13859 cp_function_chain
= p
;
13861 p
->named_labels
= named_labels
;
13862 p
->shadowed_labels
= shadowed_labels
;
13863 p
->returns_value
= current_function_returns_value
;
13864 p
->returns_null
= current_function_returns_null
;
13865 p
->warn_about_return_type
= warn_about_return_type
;
13866 p
->binding_level
= current_binding_level
;
13867 p
->ctor_label
= ctor_label
;
13868 p
->dtor_label
= dtor_label
;
13869 p
->last_dtor_insn
= last_dtor_insn
;
13870 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13871 p
->assigns_this
= current_function_assigns_this
;
13872 p
->just_assigned_this
= current_function_just_assigned_this
;
13873 p
->parms_stored
= current_function_parms_stored
;
13874 p
->result_rtx
= original_result_rtx
;
13875 p
->base_init_expr
= base_init_expr
;
13876 p
->temp_name_counter
= temp_name_counter
;
13877 p
->base_init_list
= current_base_init_list
;
13878 p
->member_init_list
= current_member_init_list
;
13879 p
->current_class_ptr
= current_class_ptr
;
13880 p
->current_class_ref
= current_class_ref
;
13881 p
->static_labelno
= static_labelno
;
13884 /* Restore the variables used during compilation of a C++ function. */
13887 pop_cp_function_context (context
)
13890 struct cp_function
*p
= cp_function_chain
;
13893 /* Bring back all the labels that were shadowed. */
13894 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13895 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13896 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13897 TREE_VALUE (link
));
13899 pop_function_context_from (context
);
13901 cp_function_chain
= p
->next
;
13903 named_labels
= p
->named_labels
;
13904 shadowed_labels
= p
->shadowed_labels
;
13905 current_function_returns_value
= p
->returns_value
;
13906 current_function_returns_null
= p
->returns_null
;
13907 warn_about_return_type
= p
->warn_about_return_type
;
13908 current_binding_level
= p
->binding_level
;
13909 ctor_label
= p
->ctor_label
;
13910 dtor_label
= p
->dtor_label
;
13911 last_dtor_insn
= p
->last_dtor_insn
;
13912 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13913 current_function_assigns_this
= p
->assigns_this
;
13914 current_function_just_assigned_this
= p
->just_assigned_this
;
13915 current_function_parms_stored
= p
->parms_stored
;
13916 original_result_rtx
= p
->result_rtx
;
13917 base_init_expr
= p
->base_init_expr
;
13918 temp_name_counter
= p
->temp_name_counter
;
13919 current_base_init_list
= p
->base_init_list
;
13920 current_member_init_list
= p
->member_init_list
;
13921 current_class_ptr
= p
->current_class_ptr
;
13922 current_class_ref
= p
->current_class_ref
;
13923 static_labelno
= p
->static_labelno
;
13931 return function_depth
!= 0;