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
) != TREE_CODE (olddecl
))
2515 /* If the two DECLs are not even the same kind of thing, we're not
2516 interested in their types. */
2519 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2521 tree f1
= TREE_TYPE (newdecl
);
2522 tree f2
= TREE_TYPE (olddecl
);
2523 tree p1
= TYPE_ARG_TYPES (f1
);
2524 tree p2
= TYPE_ARG_TYPES (f2
);
2526 if (DECL_REAL_CONTEXT (newdecl
) != DECL_REAL_CONTEXT (olddecl
)
2527 && ! (DECL_LANGUAGE (newdecl
) == lang_c
2528 && DECL_LANGUAGE (olddecl
) == lang_c
))
2531 /* When we parse a static member function definition,
2532 we put together a FUNCTION_DECL which thinks its type
2533 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2535 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2536 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2537 else if (TREE_CODE (f2
) == METHOD_TYPE
2538 && DECL_STATIC_FUNCTION_P (newdecl
))
2539 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2541 /* Here we must take care of the case where new default
2542 parameters are specified. Also, warn if an old
2543 declaration becomes ambiguous because default
2544 parameters may cause the two to be ambiguous. */
2545 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2547 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2548 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2550 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2554 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2556 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2559 types_match
= self_promoting_args_p (p1
);
2560 if (p1
== void_list_node
)
2561 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2563 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2564 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2566 types_match
= self_promoting_args_p (p2
);
2567 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2570 types_match
= compparms (p1
, p2
, 3);
2575 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2577 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2578 DECL_TEMPLATE_PARMS (olddecl
)))
2581 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2584 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2585 DECL_TEMPLATE_RESULT (newdecl
));
2589 if (TREE_TYPE (newdecl
) == error_mark_node
)
2590 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2591 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2592 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2593 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2596 types_match
= comptypes (TREE_TYPE (newdecl
),
2597 TREE_TYPE (olddecl
), 1);
2603 /* If NEWDECL is `static' and an `extern' was seen previously,
2604 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2605 information about previous usage as an `extern'.)
2607 Note that this does not apply to the C++ case of declaring
2608 a variable `extern const' and then later `const'.
2610 Don't complain about built-in functions, since they are beyond
2611 the user's control. */
2614 warn_extern_redeclared_static (newdecl
, olddecl
)
2615 tree newdecl
, olddecl
;
2619 static char *explicit_extern_static_warning
2620 = "`%D' was declared `extern' and later `static'";
2621 static char *implicit_extern_static_warning
2622 = "`%D' was declared implicitly `extern' and later `static'";
2624 if (TREE_CODE (newdecl
) == TYPE_DECL
)
2627 name
= DECL_ASSEMBLER_NAME (newdecl
);
2628 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2630 /* It's okay to redeclare an ANSI built-in function as static,
2631 or to declare a non-ANSI built-in function as anything. */
2632 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2633 && olddecl
!= NULL_TREE
2634 && TREE_CODE (olddecl
) == FUNCTION_DECL
2635 && (DECL_BUILT_IN (olddecl
)
2636 || DECL_BUILT_IN_NONANSI (olddecl
))))
2638 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2639 ? implicit_extern_static_warning
2640 : explicit_extern_static_warning
, newdecl
);
2641 if (olddecl
!= NULL_TREE
)
2642 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2647 /* Handle when a new declaration NEWDECL has the same name as an old
2648 one OLDDECL in the same binding contour. Prints an error message
2651 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2652 Otherwise, return 0. */
2655 duplicate_decls (newdecl
, olddecl
)
2656 tree newdecl
, olddecl
;
2658 extern struct obstack permanent_obstack
;
2659 unsigned olddecl_uid
= DECL_UID (olddecl
);
2660 int olddecl_friend
= 0, types_match
= 0;
2661 int new_defines_function
= 0;
2663 if (newdecl
== olddecl
)
2666 types_match
= decls_match (newdecl
, olddecl
);
2668 /* If either the type of the new decl or the type of the old decl is an
2669 error_mark_node, then that implies that we have already issued an
2670 error (earlier) for some bogus type specification, and in that case,
2671 it is rather pointless to harass the user with yet more error message
2672 about the same declaration, so just pretend the types match here. */
2673 if (TREE_TYPE (newdecl
) == error_mark_node
2674 || TREE_TYPE (olddecl
) == error_mark_node
)
2677 /* Check for redeclaration and other discrepancies. */
2678 if (TREE_CODE (olddecl
) == FUNCTION_DECL
2679 && DECL_ARTIFICIAL (olddecl
)
2680 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2682 /* If you declare a built-in or predefined function name as static,
2683 the old definition is overridden, but optionally warn this was a
2684 bad choice of name. Ditto for overloads. */
2685 if (! TREE_PUBLIC (newdecl
)
2686 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2687 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2690 cp_warning ("shadowing %s function `%#D'",
2691 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2693 /* Discard the old built-in function. */
2696 else if (! types_match
)
2698 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2700 /* If the built-in is not ansi, then programs can override
2701 it even globally without an error. */
2702 if (! DECL_BUILT_IN (olddecl
))
2703 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2707 cp_error ("declaration of `%#D'", newdecl
);
2708 cp_error ("conflicts with built-in declaration `%#D'",
2714 cp_warning ("declaration of `%#D'", newdecl
);
2715 cp_warning ("conflicts with built-in declaration `%#D'",
2719 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2721 if ((TREE_CODE (olddecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (olddecl
)
2722 && TREE_CODE (newdecl
) != TYPE_DECL
2723 && ! (TREE_CODE (newdecl
) == TEMPLATE_DECL
2724 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
))
2725 || (TREE_CODE (newdecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (newdecl
)
2726 && TREE_CODE (olddecl
) != TYPE_DECL
2727 && ! (TREE_CODE (olddecl
) == TEMPLATE_DECL
2728 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
))
2731 /* We do nothing special here, because C++ does such nasty
2732 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2733 get shadowed, and know that if we need to find a TYPE_DECL
2734 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2735 slot of the identifier. */
2739 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2740 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
2741 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2742 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
2745 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2746 if (TREE_CODE (olddecl
) == TREE_LIST
)
2747 olddecl
= TREE_VALUE (olddecl
);
2748 cp_error_at ("previous declaration of `%#D'", olddecl
);
2750 /* New decl is completely inconsistent with the old one =>
2751 tell caller to replace the old one. */
2755 else if (!types_match
)
2757 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2759 /* The name of a class template may not be declared to refer to
2760 any other template, class, function, object, namespace, value,
2761 or type in the same scope. */
2762 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
2763 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2765 cp_error ("declaration of template `%#D'", newdecl
);
2766 cp_error_at ("conflicts with previous declaration `%#D'",
2769 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
2770 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
2771 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
2772 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))), 3)
2773 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2774 DECL_TEMPLATE_PARMS (olddecl
)))
2776 cp_error ("new declaration `%#D'", newdecl
);
2777 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2781 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2783 if (DECL_LANGUAGE (newdecl
) == lang_c
2784 && DECL_LANGUAGE (olddecl
) == lang_c
)
2786 cp_error ("declaration of C function `%#D' conflicts with",
2788 cp_error_at ("previous declaration `%#D' here", olddecl
);
2790 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2791 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2793 cp_error ("new declaration `%#D'", newdecl
);
2794 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2800 /* Already complained about this, so don't do so again. */
2801 else if (current_class_type
== NULL_TREE
2802 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2804 cp_error ("conflicting types for `%#D'", newdecl
);
2805 cp_error_at ("previous declaration as `%#D'", olddecl
);
2808 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2809 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2810 && (!DECL_TEMPLATE_INFO (newdecl
)
2811 || (DECL_TI_TEMPLATE (newdecl
)
2812 != DECL_TI_TEMPLATE (olddecl
))))
2813 || (DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2814 && (!DECL_TEMPLATE_INFO (olddecl
)
2815 || (DECL_TI_TEMPLATE (olddecl
)
2816 != DECL_TI_TEMPLATE (newdecl
))))))
2817 /* It's OK to have a template specialization and a non-template
2818 with the same type, or to have specializations of two
2819 different templates with the same type. Note that if one is a
2820 specialization, and the other is an instantiation of the same
2821 template, that we do not exit at this point. That situation
2822 can occur if we instantiate a template class, and then
2823 specialize one of its methods. This situation is legal, but
2824 the declarations must be merged in the usual way. */
2826 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2827 && ((DECL_TEMPLATE_INSTANTIATION (olddecl
)
2828 && !DECL_USE_TEMPLATE (newdecl
))
2829 || (DECL_TEMPLATE_INSTANTIATION (newdecl
)
2830 && !DECL_USE_TEMPLATE (olddecl
))))
2831 /* One of the declarations is a template instantiation, and the
2832 other is not a template at all. That's OK. */
2834 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
2835 && DECL_NAMESPACE_ALIAS (newdecl
)
2836 && DECL_NAMESPACE_ALIAS (newdecl
) == DECL_NAMESPACE_ALIAS (olddecl
))
2837 /* Redeclaration of namespace alias, ignore it. */
2841 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2844 cp_error (errmsg
, newdecl
);
2845 if (DECL_NAME (olddecl
) != NULL_TREE
)
2846 cp_error_at ((DECL_INITIAL (olddecl
)
2847 && namespace_bindings_p ())
2848 ? "`%#D' previously defined here"
2849 : "`%#D' previously declared here", olddecl
);
2851 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2852 && DECL_INITIAL (olddecl
) != NULL_TREE
2853 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2854 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2856 /* Prototype decl follows defn w/o prototype. */
2857 cp_warning_at ("prototype for `%#D'", newdecl
);
2858 cp_warning_at ("follows non-prototype definition here", olddecl
);
2860 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2861 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2863 /* extern "C" int foo ();
2864 int foo () { bar (); }
2866 if (current_lang_stack
== current_lang_base
)
2867 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2870 cp_error_at ("previous declaration of `%#D' with %L linkage",
2871 olddecl
, DECL_LANGUAGE (olddecl
));
2872 cp_error ("conflicts with new declaration with %L linkage",
2873 DECL_LANGUAGE (newdecl
));
2877 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
2879 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2881 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2882 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2885 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2886 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2888 for (; t1
&& t1
!= void_list_node
;
2889 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2890 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2892 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2897 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2899 cp_pedwarn_at ("after previous specification in `%#D'",
2905 cp_error ("default argument given for parameter %d of `%#D'",
2907 cp_error_at ("after previous specification in `%#D'",
2912 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2913 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
2915 cp_warning ("`%#D' was used before it was declared inline",
2917 cp_warning_at ("previous non-inline declaration here",
2923 /* If new decl is `static' and an `extern' was seen previously,
2925 warn_extern_redeclared_static (newdecl
, olddecl
);
2927 /* We have committed to returning 1 at this point. */
2928 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2930 /* Now that functions must hold information normally held
2931 by field decls, there is extra work to do so that
2932 declaration information does not get destroyed during
2934 if (DECL_VINDEX (olddecl
))
2935 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2936 if (DECL_CONTEXT (olddecl
))
2937 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2938 if (DECL_CLASS_CONTEXT (olddecl
))
2939 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2940 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2941 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2942 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2943 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2944 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2945 DECL_VIRTUAL_P (newdecl
) |= DECL_VIRTUAL_P (olddecl
);
2946 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl
) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl
);
2947 new_defines_function
= DECL_INITIAL (newdecl
) != NULL_TREE
;
2949 /* Optionally warn about more than one declaration for the same
2950 name, but don't warn about a function declaration followed by a
2952 if (warn_redundant_decls
&& ! DECL_ARTIFICIAL (olddecl
)
2953 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2954 /* Don't warn about extern decl followed by definition. */
2955 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
))
2956 /* Don't warn about friends, let add_friend take care of it. */
2957 && ! DECL_FRIEND_P (newdecl
))
2959 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2960 cp_warning_at ("previous declaration of `%D'", olddecl
);
2964 /* Deal with C++: must preserve virtual function table size. */
2965 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2967 register tree newtype
= TREE_TYPE (newdecl
);
2968 register tree oldtype
= TREE_TYPE (olddecl
);
2970 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2971 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2973 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2974 CLASSTYPE_FRIEND_CLASSES (newtype
)
2975 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2979 /* Copy all the DECL_... slots specified in the new decl
2980 except for any that we copy here from the old type. */
2981 DECL_MACHINE_ATTRIBUTES (newdecl
)
2982 = merge_machine_decl_attributes (olddecl
, newdecl
);
2984 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2986 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl
),
2987 DECL_TEMPLATE_RESULT (olddecl
)))
2988 cp_error ("invalid redeclaration of %D", newdecl
);
2989 TREE_TYPE (olddecl
) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
));
2990 DECL_TEMPLATE_PARMS (olddecl
) = DECL_TEMPLATE_PARMS (newdecl
);
2991 if (DECL_TEMPLATE_INFO (newdecl
))
2992 DECL_TEMPLATE_INFO (olddecl
) = DECL_TEMPLATE_INFO (newdecl
);
2993 DECL_TEMPLATE_SPECIALIZATIONS (olddecl
)
2994 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl
),
2995 DECL_TEMPLATE_SPECIALIZATIONS (newdecl
));
3002 /* Automatically handles default parameters. */
3003 tree oldtype
= TREE_TYPE (olddecl
);
3006 /* Make sure we put the new type in the same obstack as the old one. */
3008 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
3011 push_obstacks_nochange ();
3012 end_temporary_allocation ();
3015 /* Merge the data types specified in the two decls. */
3016 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
3018 if (TREE_CODE (newdecl
) == VAR_DECL
)
3019 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
3020 /* Do this after calling `common_type' so that default
3021 parameters don't confuse us. */
3022 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3023 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
3024 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
3026 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
3027 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
3028 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
3029 TYPE_RAISES_EXCEPTIONS (oldtype
));
3031 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
3032 && DECL_SOURCE_LINE (olddecl
) != 0
3034 && ! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
3036 cp_pedwarn ("declaration of `%D' throws different exceptions",
3038 cp_pedwarn_at ("previous declaration here", olddecl
);
3041 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
3043 /* Lay the type out, unless already done. */
3044 if (newtype
!= canonical_type_variant (oldtype
)
3045 && TREE_TYPE (newdecl
) != error_mark_node
3046 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3047 layout_type (TREE_TYPE (newdecl
));
3049 if ((TREE_CODE (newdecl
) == VAR_DECL
3050 || TREE_CODE (newdecl
) == PARM_DECL
3051 || TREE_CODE (newdecl
) == RESULT_DECL
3052 || TREE_CODE (newdecl
) == FIELD_DECL
3053 || TREE_CODE (newdecl
) == TYPE_DECL
)
3054 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3055 layout_decl (newdecl
, 0);
3057 /* Merge the type qualifiers. */
3058 if (TREE_READONLY (newdecl
))
3059 TREE_READONLY (olddecl
) = 1;
3060 if (TREE_THIS_VOLATILE (newdecl
))
3061 TREE_THIS_VOLATILE (olddecl
) = 1;
3063 /* Merge the initialization information. */
3064 if (DECL_INITIAL (newdecl
) == NULL_TREE
3065 && DECL_INITIAL (olddecl
) != NULL_TREE
)
3067 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3068 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
3069 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
3070 if (DECL_LANG_SPECIFIC (newdecl
)
3071 && DECL_LANG_SPECIFIC (olddecl
))
3072 DECL_SAVED_TREE (newdecl
) = DECL_SAVED_TREE (olddecl
);
3075 /* Merge the section attribute.
3076 We want to issue an error if the sections conflict but that must be
3077 done later in decl_attributes since we are called before attributes
3079 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
3080 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
3082 /* Keep the old rtl since we can safely use it, unless it's the
3083 call to abort() used for abstract virtuals. */
3084 if ((DECL_LANG_SPECIFIC (olddecl
)
3085 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3086 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
3087 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3091 /* If cannot merge, then use the new type and qualifiers,
3092 and don't preserve the old rtl. */
3095 /* Clean out any memory we had of the old declaration. */
3096 tree oldstatic
= value_member (olddecl
, static_aggregates
);
3098 TREE_VALUE (oldstatic
) = error_mark_node
;
3100 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
3101 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
3102 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
3103 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
3106 /* Merge the storage class information. */
3107 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
3108 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
3109 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
3110 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
3111 if (! DECL_EXTERNAL (olddecl
))
3112 DECL_EXTERNAL (newdecl
) = 0;
3114 if (DECL_LANG_SPECIFIC (newdecl
) && DECL_LANG_SPECIFIC (olddecl
))
3116 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
3117 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
3118 DECL_COMDAT (newdecl
) |= DECL_COMDAT (olddecl
);
3119 /* Don't really know how much of the language-specific
3120 values we should copy from old to new. */
3121 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
3122 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
3123 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
3124 if (DECL_TEMPLATE_INFO (newdecl
) == NULL_TREE
)
3126 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
3127 DECL_USE_TEMPLATE (newdecl
) = DECL_USE_TEMPLATE (olddecl
);
3129 olddecl_friend
= DECL_FRIEND_P (olddecl
);
3132 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3134 if (DECL_TEMPLATE_INSTANTIATION (olddecl
)
3135 && !DECL_TEMPLATE_INSTANTIATION (newdecl
))
3137 /* If newdecl is not a specialization, then it is not a
3138 template-related function at all. And that means that we
3139 shoud have exited above, returning 0. */
3140 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl
),
3143 if (TREE_USED (olddecl
))
3144 /* From [temp.expl.spec]:
3146 If a template, a member template or the member of a class
3147 template is explicitly specialized then that
3148 specialization shall be declared before the first use of
3149 that specialization that would cause an implicit
3150 instantiation to take place, in every translation unit in
3151 which such a use occurs. */
3152 cp_error ("explicit specialization of %D after first use",
3155 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl
);
3157 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
3159 /* If either decl says `inline', this fn is inline, unless its
3160 definition was passed already. */
3161 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
3162 DECL_INLINE (olddecl
) = 1;
3163 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
3167 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
3168 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
3169 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
3171 if (! types_match
|| new_defines_function
)
3173 /* These need to be copied so that the names are available. */
3174 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
3175 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
3177 if (new_defines_function
)
3178 /* If defining a function declared with other language
3179 linkage, use the previously declared language linkage. */
3180 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
3183 /* If redeclaring a builtin function, and not a definition,
3184 it stays built in. */
3185 if (DECL_BUILT_IN (olddecl
))
3187 DECL_BUILT_IN (newdecl
) = 1;
3188 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
3189 /* If we're keeping the built-in definition, keep the rtl,
3190 regardless of declaration matches. */
3191 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3194 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
3196 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
3197 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
3198 /* Previously saved insns go together with
3199 the function's previous definition. */
3200 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3201 /* Don't clear out the arguments if we're redefining a function. */
3202 if (DECL_ARGUMENTS (olddecl
))
3203 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
3205 if (DECL_LANG_SPECIFIC (olddecl
))
3206 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
3209 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
3211 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
3214 /* Now preserve various other info from the definition. */
3215 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
3216 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
3217 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
3218 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
3220 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3223 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
3224 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
3226 function_size
= sizeof (struct tree_decl
);
3228 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3229 (char *) olddecl
+ sizeof (struct tree_common
),
3230 function_size
- sizeof (struct tree_common
));
3232 /* Can we safely free the storage used by newdecl? */
3234 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3235 & ~ obstack_alignment_mask (&permanent_obstack))
3237 if (DECL_TEMPLATE_INSTANTIATION (newdecl
))
3239 /* If newdecl is a template instantiation, it is possible that
3240 the following sequence of events has occurred:
3242 o A friend function was declared in a class template. The
3243 class template was instantiated.
3245 o The instantiation of the friend declaration was
3246 recorded on the instantiation list, and is newdecl.
3248 o Later, however, instantiate_class_template called pushdecl
3249 on the newdecl to perform name injection. But, pushdecl in
3250 turn called duplicate_decls when it discovered that another
3251 declaration of a global function with the same name already
3254 o Here, in duplicate_decls, we decided to clobber newdecl.
3256 If we're going to do that, we'd better make sure that
3257 olddecl, and not newdecl, is on the list of
3258 instantiations so that if we try to do the instantiation
3259 again we won't get the clobbered declaration. */
3261 tree tmpl
= DECL_TI_TEMPLATE (newdecl
);
3262 tree decls
= DECL_TEMPLATE_SPECIALIZATIONS (tmpl
);
3264 for (; decls
; decls
= TREE_CHAIN (decls
))
3265 if (TREE_VALUE (decls
) == newdecl
)
3266 TREE_VALUE (decls
) = olddecl
;
3269 if (((char *)newdecl
+ ROUND (function_size
) == (char *)nl
3270 && ((char *)newdecl
+ ROUND (function_size
)
3271 + ROUND (sizeof (struct lang_decl
))
3272 == obstack_next_free (&permanent_obstack
)))
3273 || ((char *)newdecl
+ ROUND (function_size
)
3274 == obstack_next_free (&permanent_obstack
)))
3276 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
3277 DECL_LANG_SPECIFIC (olddecl
) = ol
;
3278 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
3280 obstack_free (&permanent_obstack
, newdecl
);
3282 else if (LANG_DECL_PERMANENT (ol
) && ol
!= nl
)
3284 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
3286 /* Save these lang_decls that would otherwise be lost. */
3287 extern tree free_lang_decl_chain
;
3288 tree free_lang_decl
= (tree
) ol
;
3290 if (DECL_LANG_SPECIFIC (olddecl
) == ol
)
3293 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
3294 free_lang_decl_chain
= free_lang_decl
;
3298 /* Storage leak. */;
3304 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3305 (char *) olddecl
+ sizeof (struct tree_common
),
3306 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3307 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3310 DECL_UID (olddecl
) = olddecl_uid
;
3312 DECL_FRIEND_P (olddecl
) = 1;
3314 /* NEWDECL contains the merged attribute lists.
3315 Update OLDDECL to be the same. */
3316 DECL_MACHINE_ATTRIBUTES (olddecl
) = DECL_MACHINE_ATTRIBUTES (newdecl
);
3321 /* Record a decl-node X as belonging to the current lexical scope.
3322 Check for errors (such as an incompatible declaration for the same
3323 name already seen in the same scope).
3325 Returns either X or an old decl for the same name.
3326 If an old decl is returned, it may have been smashed
3327 to agree with what X says. */
3334 register tree name
= DECL_ASSEMBLER_NAME (x
);
3335 register struct binding_level
*b
= current_binding_level
;
3337 if (current_function_decl
&& x
!= current_function_decl
3338 /* A local declaration for a function doesn't constitute nesting. */
3339 && (TREE_CODE (x
) != FUNCTION_DECL
|| DECL_INITIAL (x
))
3340 /* Don't change DECL_CONTEXT of virtual methods. */
3341 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
3342 && ! DECL_CONTEXT (x
))
3343 DECL_CONTEXT (x
) = current_function_decl
;
3344 if (!DECL_CONTEXT (x
))
3345 DECL_CONTEXT (x
) = FROB_CONTEXT (current_namespace
);
3347 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3348 compiler wants to use. */
3349 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
3350 || TREE_CODE (x
) == NAMESPACE_DECL
|| TREE_CODE (x
) == TEMPLATE_TYPE_PARM
3351 || TREE_CODE (x
) == TEMPLATE_TEMPLATE_PARM
)
3352 name
= DECL_NAME (x
);
3357 /* Not needed...see below. */
3361 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3362 name
= TREE_OPERAND (name
, 0);
3364 /* Namespace-scoped variables are not found in the current level. */
3365 if (TREE_CODE (x
) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (x
))
3366 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3368 t
= lookup_name_current_level (name
);
3369 if (t
== error_mark_node
)
3371 /* error_mark_node is 0 for a while during initialization! */
3373 cp_error_at ("`%#D' used prior to declaration", x
);
3376 else if (t
!= NULL_TREE
)
3379 /* This is turned off until I have time to do it right (bpk). */
3380 /* With the code below that uses it... */
3381 file
= DECL_SOURCE_FILE (t
);
3382 line
= DECL_SOURCE_LINE (t
);
3384 if (TREE_CODE (t
) == PARM_DECL
)
3386 if (DECL_CONTEXT (t
) == NULL_TREE
)
3387 fatal ("parse errors have confused me too much");
3389 /* Check for duplicate params. */
3390 if (duplicate_decls (x
, t
))
3393 else if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
3394 || DECL_FUNCTION_TEMPLATE_P (x
))
3395 && is_overloaded_fn (t
))
3396 /* Don't do anything just yet. */;
3397 else if (t
== wchar_decl_node
)
3399 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3400 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
3402 /* Throw away the redeclaration. */
3405 else if (TREE_CODE (t
) != TREE_CODE (x
))
3407 if (duplicate_decls (x
, t
))
3410 else if (duplicate_decls (x
, t
))
3413 /* This is turned off until I have time to do it right (bpk). */
3415 /* Also warn if they did a prototype with `static' on it, but
3416 then later left the `static' off. */
3417 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3419 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3424 cp_warning ("`static' missing from declaration of `%D'",
3426 warning_with_file_and_line (file
, line
,
3427 "previous declaration of `%s'",
3428 decl_as_string (t
, 0));
3431 /* Now fix things so it'll do what they expect. */
3432 if (current_function_decl
)
3433 TREE_PUBLIC (current_function_decl
) = 0;
3435 /* Due to interference in memory reclamation (X may be
3436 obstack-deallocated at this point), we must guard against
3437 one really special case. [jason: This should be handled
3438 by start_function] */
3439 if (current_function_decl
== x
)
3440 current_function_decl
= t
;
3442 if (TREE_CODE (t
) == TYPE_DECL
)
3443 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3444 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3445 check_default_args (t
);
3449 else if (DECL_MAIN_P (x
))
3451 /* A redeclaration of main, but not a duplicate of the
3456 This function shall not be overloaded. */
3457 cp_error_at ("invalid redeclaration of `%D'", t
);
3458 cp_error ("as `%D'", x
);
3459 /* We don't try to push this declaration since that
3465 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3467 t
= push_overloaded_decl (x
, 1);
3468 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3471 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_NAMESPACE_SCOPE_P (x
))
3472 return push_overloaded_decl (x
, 0);
3474 /* If declaring a type as a typedef, copy the type (unless we're
3475 at line 0), and install this TYPE_DECL as the new type's typedef
3476 name. See the extensive comment in ../c-decl.c (pushdecl). */
3477 if (TREE_CODE (x
) == TYPE_DECL
)
3479 tree type
= TREE_TYPE (x
);
3480 if (DECL_SOURCE_LINE (x
) == 0)
3482 if (TYPE_NAME (type
) == 0)
3483 TYPE_NAME (type
) = x
;
3485 else if (type
!= error_mark_node
&& TYPE_NAME (type
) != x
3486 /* We don't want to copy the type when all we're
3487 doing is making a TYPE_DECL for the purposes of
3489 && (!TYPE_NAME (type
)
3490 || TYPE_NAME (type
) != DECL_ABSTRACT_ORIGIN (x
)))
3492 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
3494 DECL_ORIGINAL_TYPE (x
) = type
;
3495 type
= build_type_copy (type
);
3496 TYPE_STUB_DECL (type
) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x
));
3497 TYPE_NAME (type
) = x
;
3498 TREE_TYPE (x
) = type
;
3503 if (type
!= error_mark_node
3505 && TYPE_IDENTIFIER (type
))
3506 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3509 /* Multiple external decls of the same identifier ought to match.
3511 We get warnings about inline functions where they are defined.
3512 We get warnings about other functions from push_overloaded_decl.
3514 Avoid duplicate warnings where they are used. */
3515 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3519 if (IDENTIFIER_NAMESPACE_VALUE (name
) != NULL_TREE
3520 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name
))
3521 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name
))))
3522 decl
= IDENTIFIER_NAMESPACE_VALUE (name
);
3527 /* If different sort of thing, we already gave an error. */
3528 && TREE_CODE (decl
) == TREE_CODE (x
)
3529 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3531 cp_pedwarn ("type mismatch with previous external decl", x
);
3532 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3536 /* This name is new in its binding level.
3537 Install the new declaration and return it. */
3538 if (namespace_bindings_p ())
3540 /* Install a global value. */
3542 /* If the first global decl has external linkage,
3543 warn if we later see static one. */
3544 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
3545 TREE_PUBLIC (name
) = 1;
3547 /* Don't install an artificial TYPE_DECL if we already have
3548 another _DECL with that name. */
3549 if (TREE_CODE (x
) != TYPE_DECL
3551 || ! DECL_ARTIFICIAL (x
))
3553 if (TREE_CODE (x
) == FUNCTION_DECL
)
3555 ((IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
3556 || (IDENTIFIER_GLOBAL_VALUE (name
) == x
), 378);
3557 SET_IDENTIFIER_NAMESPACE_VALUE (name
, x
);
3560 /* Don't forget if the function was used via an implicit decl. */
3561 if (IDENTIFIER_IMPLICIT_DECL (name
)
3562 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3565 /* Don't forget if its address was taken in that way. */
3566 if (IDENTIFIER_IMPLICIT_DECL (name
)
3567 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3568 TREE_ADDRESSABLE (x
) = 1;
3570 /* Warn about mismatches against previous implicit decl. */
3571 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3572 /* If this real decl matches the implicit, don't complain. */
3573 && ! (TREE_CODE (x
) == FUNCTION_DECL
3574 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3576 ("`%D' was previously implicitly declared to return `int'", x
);
3578 /* If new decl is `static' and an `extern' was seen previously,
3580 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3581 warn_extern_redeclared_static (x
, t
);
3585 /* Here to install a non-global value. */
3586 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3587 tree oldglobal
= IDENTIFIER_NAMESPACE_VALUE (name
);
3589 /* Don't install an artificial TYPE_DECL if we already have
3590 another _DECL with that name. */
3591 if (TREE_CODE (x
) != TYPE_DECL
3593 || ! DECL_ARTIFICIAL (x
))
3594 set_identifier_local_value_with_scope (name
, x
, b
);
3596 /* If this is a TYPE_DECL, push it into the type value slot. */
3597 if (TREE_CODE (x
) == TYPE_DECL
)
3598 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3600 /* Clear out any TYPE_DECL shadowed by a namespace so that
3601 we won't think this is a type. The C struct hack doesn't
3602 go through namespaces. */
3603 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3604 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3606 /* If this is an extern function declaration, see if we
3607 have a global definition or declaration for the function. */
3608 if (oldlocal
== NULL_TREE
3609 && DECL_EXTERNAL (x
)
3610 && oldglobal
!= NULL_TREE
3611 && TREE_CODE (x
) == FUNCTION_DECL
3612 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3614 /* We have one. Their types must agree. */
3615 if (decls_match (x
, oldglobal
))
3619 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3620 cp_warning_at ("global declaration `%#D'", oldglobal
);
3623 /* If we have a local external declaration,
3624 and no file-scope declaration has yet been seen,
3625 then if we later have a file-scope decl it must not be static. */
3626 if (oldlocal
== NULL_TREE
3627 && oldglobal
== NULL_TREE
3628 && DECL_EXTERNAL (x
)
3631 TREE_PUBLIC (name
) = 1;
3634 if (DECL_FROM_INLINE (x
))
3635 /* Inline decls shadow nothing. */;
3637 /* Warn if shadowing an argument at the top level of the body. */
3638 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3639 && TREE_CODE (oldlocal
) == PARM_DECL
3640 && TREE_CODE (x
) != PARM_DECL
)
3642 /* Go to where the parms should be and see if we
3644 struct binding_level
*b
= current_binding_level
->level_chain
;
3650 if (b
->parm_flag
== 1)
3651 cp_error ("declaration of `%#D' shadows a parameter", name
);
3653 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3654 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3656 warning ("variable `%s' shadows local",
3657 IDENTIFIER_POINTER (name
));
3658 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3660 /* Maybe warn if shadowing something else. */
3661 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3662 /* No shadow warnings for internally generated vars. */
3663 && ! DECL_ARTIFICIAL (x
)
3664 /* No shadow warnings for vars made for inlining. */
3665 && ! DECL_FROM_INLINE (x
))
3667 char *warnstring
= NULL
;
3669 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3670 warnstring
= "declaration of `%s' shadows a parameter";
3671 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3672 && current_class_ptr
3673 && !TREE_STATIC (name
))
3674 warnstring
= "declaration of `%s' shadows a member of `this'";
3675 else if (oldlocal
!= NULL_TREE
)
3676 warnstring
= "declaration of `%s' shadows previous local";
3677 else if (oldglobal
!= NULL_TREE
)
3678 /* XXX shadow warnings in outer-more namespaces */
3679 warnstring
= "declaration of `%s' shadows global declaration";
3682 warning (warnstring
, IDENTIFIER_POINTER (name
));
3684 /* Check to see if decl redeclares a template parameter. */
3685 if (oldlocal
&& (current_class_type
|| current_function_decl
)
3686 && current_template_parms
)
3688 if (decl_template_parm_p (oldlocal
))
3690 cp_error ("re-using name of template parameter `%T' in this scope", name
);
3691 cp_error_at (" previously declared here `%#D'", oldlocal
);
3696 if (TREE_CODE (x
) == FUNCTION_DECL
)
3697 check_default_args (x
);
3699 /* Keep count of variables in this level with incomplete type. */
3700 if (TREE_CODE (x
) == VAR_DECL
3701 && TREE_TYPE (x
) != error_mark_node
3702 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3703 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3704 /* RTTI TD entries are created while defining the type_info. */
3705 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3706 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3707 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3710 /* Put decls on list in reverse order.
3711 We will reverse them later if necessary. */
3712 TREE_CHAIN (x
) = b
->names
;
3714 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3715 my_friendly_abort (124);
3720 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3721 caller to set DECL_CONTEXT properly. */
3724 pushdecl_with_scope (x
, level
)
3726 struct binding_level
*level
;
3728 register struct binding_level
*b
;
3729 tree function_decl
= current_function_decl
;
3731 current_function_decl
= NULL_TREE
;
3732 if (level
->parm_flag
== 2)
3734 b
= class_binding_level
;
3735 class_binding_level
= level
;
3736 pushdecl_class_level (x
);
3737 class_binding_level
= b
;
3741 b
= current_binding_level
;
3742 current_binding_level
= level
;
3744 current_binding_level
= b
;
3746 current_function_decl
= function_decl
;
3750 /* Like pushdecl, only it places X in the current namespace,
3754 pushdecl_namespace_level (x
)
3757 register struct binding_level
*b
= inner_binding_level
;
3760 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
3762 /* Now, the type_shadowed stack may screw us. Munge it so it does
3764 if (TREE_CODE (x
) == TYPE_DECL
)
3766 tree name
= DECL_NAME (x
);
3768 tree
*ptr
= (tree
*)0;
3769 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3771 tree shadowed
= b
->type_shadowed
;
3772 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3773 if (TREE_PURPOSE (shadowed
) == name
)
3775 ptr
= &TREE_VALUE (shadowed
);
3776 /* Can't break out of the loop here because sometimes
3777 a binding level will have duplicate bindings for
3778 PT names. It's gross, but I haven't time to fix it. */
3781 newval
= TREE_TYPE (x
);
3782 if (ptr
== (tree
*)0)
3784 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3785 up here if this is changed to an assertion. --KR */
3786 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3796 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3800 pushdecl_top_level (x
)
3803 tree cur_namespace
= current_namespace
;
3804 current_namespace
= global_namespace
;
3805 x
= pushdecl_namespace_level (x
);
3806 current_namespace
= cur_namespace
;
3810 /* Make the declaration of X appear in CLASS scope. */
3813 pushdecl_class_level (x
)
3816 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3817 scope looks for the pre-mangled name. */
3818 register tree name
= DECL_NAME (x
);
3822 if (TYPE_BEING_DEFINED (current_class_type
))
3824 /* A name N used in a class S shall refer to the same declaration
3825 in its context and when re-evaluated in the completed scope of S.
3826 Types, enums, and static vars are checked here; other
3827 members are checked in finish_struct. */
3828 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3829 tree ilv
= IDENTIFIER_LOCAL_VALUE (name
);
3832 && flag_optional_diags
3833 /* Don't complain about inherited names. */
3834 && id_in_current_class (name
)
3835 /* Or shadowed tags. */
3836 && !(DECL_DECLARES_TYPE_P (icv
)
3837 && DECL_CONTEXT (icv
) == current_class_type
))
3839 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name
, x
);
3840 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
3844 /* Check to see if decl redeclares a template parameter. */
3845 if (ilv
&& ! decls_match (ilv
, x
)
3846 && (current_class_type
|| current_function_decl
)
3847 && current_template_parms
)
3849 if (decl_template_parm_p (ilv
))
3851 cp_error ("re-using name of template parameter `%T' in this scope", name
);
3852 cp_error_at (" previously declared here `%#D'", ilv
);
3857 push_class_level_binding (name
, x
);
3858 if (TREE_CODE (x
) == TYPE_DECL
)
3860 set_identifier_type_value (name
, TREE_TYPE (x
));
3866 /* This function is used to push the mangled decls for nested types into
3867 the appropriate scope. Previously pushdecl_top_level was used, but that
3868 is incorrect for members of local classes. */
3871 pushdecl_nonclass_level (x
)
3874 struct binding_level
*b
= current_binding_level
;
3876 my_friendly_assert (b
->parm_flag
!= 2, 180);
3879 /* Get out of template binding levels */
3880 while (b
->pseudo_global
)
3884 pushdecl_with_scope (x
, b
);
3888 /* Make the declaration(s) of X appear in CLASS scope
3889 under the name NAME. */
3892 push_class_level_binding (name
, x
)
3896 /* The class_binding_level will be NULL if x is a template
3897 parameter name in a member template. */
3898 if (!class_binding_level
)
3901 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3902 && purpose_member (name
, class_binding_level
->class_shadowed
))
3905 maybe_push_cache_obstack ();
3906 class_binding_level
->class_shadowed
3907 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3908 class_binding_level
->class_shadowed
);
3910 IDENTIFIER_CLASS_VALUE (name
) = x
;
3911 obstack_ptr_grow (&decl_obstack
, x
);
3914 /* Insert another USING_DECL into the current binding level,
3915 returning this declaration. If this is a redeclaration,
3916 do nothing and return NULL_TREE. */
3919 push_using_decl (scope
, name
)
3925 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
3926 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
3927 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
3928 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
3932 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
3933 DECL_INITIAL (decl
) = scope
;
3934 TREE_CHAIN (decl
) = current_binding_level
->usings
;
3935 current_binding_level
->usings
= decl
;
3939 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3940 changed (i.e. there was already a directive), or the fresh
3941 TREE_LIST otherwise. */
3944 push_using_directive (used
)
3947 tree ud
= current_binding_level
->using_directives
;
3948 tree iter
, ancestor
;
3950 /* Check if we already have this. */
3951 if (purpose_member (used
, ud
) != NULL_TREE
)
3954 /* Recursively add all namespaces used. */
3955 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
3956 push_using_directive (TREE_PURPOSE (iter
));
3958 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
3959 ud
= current_binding_level
->using_directives
;
3960 ud
= perm_tree_cons (used
, ancestor
, ud
);
3961 current_binding_level
->using_directives
= ud
;
3965 /* DECL is a FUNCTION_DECL which may have other definitions already in
3966 place. We get around this by making the value of the identifier point
3967 to a list of all the things that want to be referenced by that name. It
3968 is then up to the users of that name to decide what to do with that
3971 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3972 slot. It is dealt with the same way.
3974 The value returned may be a previous declaration if we guessed wrong
3975 about what language DECL should belong to (C or C++). Otherwise,
3976 it's always DECL (and never something that's not a _DECL). */
3979 push_overloaded_decl (decl
, forgettable
)
3983 tree orig_name
= DECL_NAME (decl
);
3985 int doing_global
= (namespace_bindings_p () || ! forgettable
);
3989 old
= namespace_binding (orig_name
, DECL_CONTEXT (decl
));
3990 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3991 && DECL_ARTIFICIAL (old
)
3992 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3994 if (duplicate_decls (decl
, old
))
4001 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
4003 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
4005 current_binding_level
->shadowed
4006 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
4013 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
4015 tree t
= TREE_TYPE (old
);
4016 if (IS_AGGR_TYPE (t
) && warn_shadow
4017 && (! DECL_IN_SYSTEM_HEADER (decl
)
4018 || ! DECL_IN_SYSTEM_HEADER (old
)))
4019 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
4022 else if (is_overloaded_fn (old
))
4026 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
4027 if (decl
== OVL_CURRENT (tmp
)
4028 || duplicate_decls (decl
, OVL_CURRENT (tmp
)))
4029 return OVL_CURRENT (tmp
);
4033 cp_error_at ("previous non-function declaration `%#D'", old
);
4034 cp_error ("conflicts with function declaration `%#D'", decl
);
4039 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4041 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4042 old
= ovl_cons (old
, NULL_TREE
);
4043 old
= ovl_cons (decl
, old
);
4046 /* orig_name is not ambiguous. */
4050 set_namespace_binding (orig_name
, current_namespace
, old
);
4052 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
4057 /* Generate an implicit declaration for identifier FUNCTIONID
4058 as a function of type int (). Print a warning if appropriate. */
4061 implicitly_declare (functionid
)
4065 int temp
= allocation_temporary_p ();
4067 push_obstacks_nochange ();
4069 /* Save the decl permanently so we can warn if definition follows.
4070 In ANSI C, warn_implicit is usually false, so the saves little space.
4071 But in C++, it's usually true, hence the extra code. */
4072 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
4073 end_temporary_allocation ();
4075 /* We used to reuse an old implicit decl here,
4076 but this loses with inline functions because it can clobber
4077 the saved decl chains. */
4078 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4080 DECL_EXTERNAL (decl
) = 1;
4081 TREE_PUBLIC (decl
) = 1;
4083 /* ANSI standard says implicit declarations are in the innermost block.
4084 So we record the decl in the standard fashion. */
4086 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
4089 /* Only one warning per identifier. */
4090 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4092 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4095 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4102 /* Return zero if the declaration NEWDECL is valid
4103 when the declaration OLDDECL (assumed to be for the same name)
4104 has already been seen.
4105 Otherwise return an error message format string with a %s
4106 where the identifier should go. */
4109 redeclaration_error_message (newdecl
, olddecl
)
4110 tree newdecl
, olddecl
;
4112 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4114 /* Because C++ can put things into name space for free,
4115 constructs like "typedef struct foo { ... } foo"
4116 would look like an erroneous redeclaration. */
4117 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
4120 return "redefinition of `%#D'";
4122 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4124 /* If this is a pure function, its olddecl will actually be
4125 the original initialization to `0' (which we force to call
4126 abort()). Don't complain about redefinition in this case. */
4127 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
4130 /* If both functions come from different namespaces, this is not
4131 a redeclaration - this is a conflict with a used function. */
4132 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4133 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4134 return "`%D' conflicts with used function";
4136 /* We'll complain about linkage mismatches in
4137 warn_extern_redeclared_static. */
4139 /* Defining the same name twice is no good. */
4140 if (DECL_INITIAL (olddecl
) != NULL_TREE
4141 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4143 if (DECL_NAME (olddecl
) == NULL_TREE
)
4144 return "`%#D' not declared in class";
4146 return "redefinition of `%#D'";
4150 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4152 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4153 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4154 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4155 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4156 && TYPE_SIZE (TREE_TYPE (newdecl
))
4157 && TYPE_SIZE (TREE_TYPE (olddecl
))))
4158 return "redefinition of `%#D'";
4161 else if (toplevel_bindings_p ())
4163 /* Objects declared at top level: */
4164 /* If at least one is a reference, it's ok. */
4165 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4167 /* Reject two definitions. */
4168 return "redefinition of `%#D'";
4172 /* Objects declared with block scope: */
4173 /* Reject two definitions, and reject a definition
4174 together with an external reference. */
4175 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4176 return "redeclaration of `%#D'";
4181 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4182 Create one if none exists so far for the current function.
4183 This function is called for both label definitions and label references. */
4189 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
4191 if (current_function_decl
== NULL_TREE
)
4193 error ("label `%s' referenced outside of any function",
4194 IDENTIFIER_POINTER (id
));
4198 if ((decl
== NULL_TREE
4199 || DECL_SOURCE_LINE (decl
) == 0)
4200 && (named_label_uses
== NULL
4201 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4202 || named_label_uses
->label_decl
!= decl
))
4204 struct named_label_list
*new_ent
;
4206 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
4207 new_ent
->label_decl
= decl
;
4208 new_ent
->names_in_scope
= current_binding_level
->names
;
4209 new_ent
->binding_level
= current_binding_level
;
4210 new_ent
->lineno_o_goto
= lineno
;
4211 new_ent
->filename_o_goto
= input_filename
;
4212 new_ent
->next
= named_label_uses
;
4213 named_label_uses
= new_ent
;
4216 /* Use a label already defined or ref'd with this name. */
4217 if (decl
!= NULL_TREE
)
4219 /* But not if it is inherited and wasn't declared to be inheritable. */
4220 if (DECL_CONTEXT (decl
) != current_function_decl
4221 && ! C_DECLARED_LABEL_FLAG (decl
))
4222 return shadow_label (id
);
4226 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4228 /* Make sure every label has an rtx. */
4231 /* A label not explicitly declared must be local to where it's ref'd. */
4232 DECL_CONTEXT (decl
) = current_function_decl
;
4234 DECL_MODE (decl
) = VOIDmode
;
4236 /* Say where one reference is to the label,
4237 for the sake of the error if it is not defined. */
4238 DECL_SOURCE_LINE (decl
) = lineno
;
4239 DECL_SOURCE_FILE (decl
) = input_filename
;
4241 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4243 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
4244 named_label_uses
->label_decl
= decl
;
4249 /* Make a label named NAME in the current function,
4250 shadowing silently any that may be inherited from containing functions
4251 or containing scopes.
4253 Note that valid use, if the label being shadowed
4254 comes from another scope in the same function,
4255 requires calling declare_nonlocal_label right away. */
4261 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
4263 if (decl
!= NULL_TREE
)
4265 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4266 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4269 return lookup_label (name
);
4272 /* Define a label, specifying the location in the source file.
4273 Return the LABEL_DECL node for the label, if the definition is valid.
4274 Otherwise return 0. */
4277 define_label (filename
, line
, name
)
4284 if (minimal_parse_mode
)
4286 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4287 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
4289 DECL_SOURCE_LINE (decl
) = line
;
4290 DECL_SOURCE_FILE (decl
) = filename
;
4295 decl
= lookup_label (name
);
4297 /* After labels, make any new cleanups go into their
4298 own new (temporary) binding contour. */
4299 current_binding_level
->more_cleanups_ok
= 0;
4301 /* If label with this name is known from an outer context, shadow it. */
4302 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
4304 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4305 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4306 decl
= lookup_label (name
);
4309 if (name
== get_identifier ("wchar_t"))
4310 cp_pedwarn ("label named wchar_t");
4312 if (DECL_INITIAL (decl
) != NULL_TREE
)
4314 cp_error ("duplicate label `%D'", decl
);
4319 struct named_label_list
*uses
, *prev
;
4322 /* Mark label as having been defined. */
4323 DECL_INITIAL (decl
) = error_mark_node
;
4324 /* Say where in the source. */
4325 DECL_SOURCE_FILE (decl
) = filename
;
4326 DECL_SOURCE_LINE (decl
) = line
;
4329 uses
= named_label_uses
;
4330 while (uses
!= NULL
)
4331 if (uses
->label_decl
== decl
)
4333 struct binding_level
*b
= current_binding_level
;
4336 tree new_decls
= b
->names
;
4337 tree old_decls
= (b
== uses
->binding_level
)
4338 ? uses
->names_in_scope
: NULL_TREE
;
4339 while (new_decls
!= old_decls
)
4341 if (TREE_CODE (new_decls
) == VAR_DECL
4342 /* Don't complain about crossing initialization
4343 of internal entities. They can't be accessed,
4344 and they should be cleaned up
4345 by the time we get to the label. */
4346 && ! DECL_ARTIFICIAL (new_decls
)
4347 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4348 && DECL_INITIAL (new_decls
) != error_mark_node
)
4349 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4353 cp_error ("jump to label `%D'", decl
);
4354 error_with_file_and_line (uses
->filename_o_goto
,
4355 uses
->lineno_o_goto
,
4359 cp_error_at (" crosses initialization of `%#D'",
4362 new_decls
= TREE_CHAIN (new_decls
);
4364 if (b
== uses
->binding_level
)
4370 prev
->next
= uses
->next
;
4372 named_label_uses
= uses
->next
;
4381 current_function_return_value
= NULL_TREE
;
4388 struct binding_level
*level
;
4389 struct cp_switch
*next
;
4392 static struct cp_switch
*switch_stack
;
4398 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4399 p
->level
= current_binding_level
;
4400 p
->next
= switch_stack
;
4407 switch_stack
= switch_stack
->next
;
4410 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4411 /* XXX Note decl is never actually used. (bpk) */
4414 define_case_label ()
4416 tree cleanup
= last_cleanup_this_contour ();
4417 struct binding_level
*b
= current_binding_level
;
4422 static int explained
= 0;
4423 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4424 warning ("where case label appears here");
4427 warning ("(enclose actions of previous case statements requiring");
4428 warning ("destructors in their own binding contours.)");
4433 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4435 tree new_decls
= b
->names
;
4436 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4438 if (TREE_CODE (new_decls
) == VAR_DECL
4439 /* Don't complain about crossing initialization
4440 of internal entities. They can't be accessed,
4441 and they should be cleaned up
4442 by the time we get to the label. */
4443 && ! DECL_ARTIFICIAL (new_decls
)
4444 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4445 && DECL_INITIAL (new_decls
) != error_mark_node
)
4446 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4449 error ("jump to case label");
4451 cp_error_at (" crosses initialization of `%#D'",
4457 /* After labels, make any new cleanups go into their
4458 own new (temporary) binding contour. */
4460 current_binding_level
->more_cleanups_ok
= 0;
4461 current_function_return_value
= NULL_TREE
;
4464 /* Return the list of declarations of the current level.
4465 Note that this list is in reverse order unless/until
4466 you nreverse it; and when you do nreverse it, you must
4467 store the result back using `storedecls' or you will lose. */
4472 return current_binding_level
->names
;
4475 /* Return the list of type-tags (for structs, etc) of the current level. */
4480 return current_binding_level
->tags
;
4483 /* Store the list of declarations of the current level.
4484 This is done for the parameter declarations of a function being defined,
4485 after they are modified in the light of any missing parameters. */
4491 current_binding_level
->names
= decls
;
4494 /* Similarly, store the list of tags of the current level. */
4500 current_binding_level
->tags
= tags
;
4503 /* Given NAME, an IDENTIFIER_NODE,
4504 return the structure (or union or enum) definition for that name.
4505 Searches binding levels from BINDING_LEVEL up to the global level.
4506 If THISLEVEL_ONLY is nonzero, searches only the specified context
4507 (but skips any tag-transparent contexts to find one that is
4508 meaningful for tags).
4509 FORM says which kind of type the caller wants;
4510 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4511 If the wrong kind of type is found, and it's not a template, an error is
4515 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4516 enum tree_code form
;
4518 struct binding_level
*binding_level
;
4521 register struct binding_level
*level
;
4522 /* Non-zero if, we should look past a pseudo-global level, even if
4524 int allow_pseudo_global
= 1;
4526 for (level
= binding_level
; level
; level
= level
->level_chain
)
4529 if (ANON_AGGRNAME_P (name
))
4530 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4532 /* There's no need for error checking here, because
4533 anon names are unique throughout the compilation. */
4534 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4535 return TREE_VALUE (tail
);
4537 else if (level
->namespace_p
)
4538 /* Do namespace lookup. */
4539 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
4541 tree old
= binding_for_name (name
, tail
);
4543 /* If we just skipped past a pseudo global level, even
4544 though THISLEVEL_ONLY, and we find a template class
4545 declaration, then we use the _TYPE node for the
4546 template. See the example below. */
4547 if (thislevel_only
&& !allow_pseudo_global
4548 && old
&& BINDING_VALUE (old
)
4549 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
4550 old
= TREE_TYPE (BINDING_VALUE (old
));
4552 old
= BINDING_TYPE (old
);
4554 /* If it has an original type, it is a typedef, and we
4555 should not return it. */
4556 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
4558 if (old
&& TREE_CODE (old
) != form
4559 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
4561 cp_error ("`%#D' redeclared as %C", old
, form
);
4566 if (thislevel_only
|| tail
== global_namespace
)
4570 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4572 if (TREE_PURPOSE (tail
) == name
)
4574 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4575 /* Should tighten this up; it'll probably permit
4576 UNION_TYPE and a struct template, for example. */
4578 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4580 /* Definition isn't the kind we were looking for. */
4581 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4585 return TREE_VALUE (tail
);
4588 if (thislevel_only
&& ! level
->tag_transparent
)
4590 if (level
->pseudo_global
&& allow_pseudo_global
)
4592 /* We must deal with cases like this:
4594 template <class T> struct S;
4595 template <class T> struct S {};
4597 When looking up `S', for the second declaration, we
4598 would like to find the first declaration. But, we
4599 are in the pseudo-global level created for the
4600 template parameters, rather than the (surrounding)
4601 namespace level. Thus, we keep going one more level,
4602 even though THISLEVEL_ONLY is non-zero. */
4603 allow_pseudo_global
= 0;
4609 if (current_class_type
&& level
->level_chain
->namespace_p
)
4611 /* Try looking in this class's tags before heading into
4612 global binding level. */
4613 tree context
= current_class_type
;
4616 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4620 these_tags
= CLASSTYPE_TAGS (context
);
4621 if (ANON_AGGRNAME_P (name
))
4624 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4626 return TREE_VALUE (tail
);
4627 these_tags
= TREE_CHAIN (these_tags
);
4632 if (TREE_PURPOSE (these_tags
) == name
)
4634 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4636 cp_error ("`%#D' redeclared as %C in class scope",
4637 TREE_VALUE (tail
), form
);
4640 return TREE_VALUE (tail
);
4642 these_tags
= TREE_CHAIN (these_tags
);
4644 /* If this type is not yet complete, then don't
4645 look at its context. */
4646 if (TYPE_SIZE (context
) == NULL_TREE
)
4648 /* Go to next enclosing type, if any. */
4649 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4652 context
= DECL_CONTEXT (context
);
4655 my_friendly_abort (10);
4668 set_current_level_tags_transparency (tags_transparent
)
4669 int tags_transparent
;
4671 current_binding_level
->tag_transparent
= tags_transparent
;
4675 /* Given a type, find the tag that was defined for it and return the tag name.
4676 Otherwise return 0. However, the value can never be 0
4677 in the cases in which this is used.
4679 C++: If NAME is non-zero, this is the new name to install. This is
4680 done when replacing anonymous tags with real tag names. */
4683 lookup_tag_reverse (type
, name
)
4687 register struct binding_level
*level
;
4689 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4692 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4694 if (TREE_VALUE (tail
) == type
)
4697 TREE_PURPOSE (tail
) = name
;
4698 return TREE_PURPOSE (tail
);
4705 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4706 Return the type value, or NULL_TREE if not found. */
4709 lookup_nested_type (type
, context
)
4713 if (context
== NULL_TREE
)
4717 switch (TREE_CODE (context
))
4721 tree ctype
= TREE_TYPE (context
);
4722 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4724 return TREE_VALUE (match
);
4725 context
= DECL_CONTEXT (context
);
4727 /* When we have a nested class whose member functions have
4728 local types (e.g., a set of enums), we'll arrive here
4729 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4730 the enclosing class. Instead, we want to make sure we
4731 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4732 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4733 context
= TREE_CHAIN (context
);
4737 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4738 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4741 my_friendly_abort (12);
4747 /* Look up NAME in the NAMESPACE. */
4750 lookup_namespace_name (namespace, name
)
4751 tree
namespace, name
;
4753 struct tree_binding _b
;
4756 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
4758 /* This happens for A::B<int> when B is a namespace. */
4759 if (TREE_CODE (name
) == NAMESPACE_DECL
)
4762 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4764 val
= binding_init (&_b
);
4765 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4766 return error_mark_node
;
4768 if (BINDING_VALUE (val
))
4770 val
= BINDING_VALUE (val
);
4772 /* If we have a single function from a using decl, pull it out. */
4773 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4774 val
= OVL_FUNCTION (val
);
4778 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4779 return error_mark_node
;
4782 /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is
4783 the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE
4784 is non-NULL, this type is being created by the implicit typename
4785 extension, and BASE_TYPE is a type named `t' in some base class of
4786 `T' which depends on template parameters.
4788 Returns the new TYPENAME_TYPE. */
4791 build_typename_type (context
, name
, fullname
, base_type
)
4800 if (processing_template_decl
)
4801 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4803 /* Build the TYPENAME_TYPE. */
4804 t
= make_lang_type (TYPENAME_TYPE
);
4805 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4806 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4807 TREE_TYPE (t
) = base_type
;
4808 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4810 /* Build the corresponding TYPE_DECL. */
4811 d
= build_decl (TYPE_DECL
, name
, t
);
4812 TYPE_NAME (TREE_TYPE (d
)) = d
;
4813 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4814 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4816 if (processing_template_decl
)
4823 make_typename_type (context
, name
)
4829 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4830 name
= TYPE_IDENTIFIER (name
);
4831 else if (TREE_CODE (name
) == TYPE_DECL
)
4832 name
= DECL_NAME (name
);
4836 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4838 name
= TREE_OPERAND (name
, 0);
4839 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4840 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4842 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4843 my_friendly_abort (2000);
4845 if (TREE_CODE (context
) == NAMESPACE_DECL
)
4847 /* We can get here from typename_sub0 in the explicit_template_type
4848 expansion. Just fail. */
4849 cp_error ("no class template named `%#T' in `%#T'",
4851 return error_mark_node
;
4854 if (! uses_template_parms (context
)
4855 || currently_open_class (context
))
4857 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4859 if (IS_AGGR_TYPE (context
))
4860 t
= lookup_field (context
, name
, 0, 0);
4864 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4865 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4867 cp_error ("no class template named `%#T' in `%#T'",
4869 return error_mark_node
;
4872 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4874 /*entering_scope=*/0);
4878 if (IS_AGGR_TYPE (context
))
4879 t
= lookup_field (context
, name
, 0, 1);
4885 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4886 return error_mark_node
;
4889 return TREE_TYPE (t
);
4893 return build_typename_type (context
, name
, fullname
, NULL_TREE
);
4896 /* Select the right _DECL from multiple choices. */
4899 select_decl (binding
, flags
)
4904 val
= BINDING_VALUE (binding
);
4905 if (LOOKUP_NAMESPACES_ONLY (flags
))
4907 /* We are not interested in types. */
4908 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4913 /* If we could have a type and
4914 we have nothing or we need a type and have none. */
4915 if (BINDING_TYPE (binding
)
4916 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4917 && TREE_CODE (val
) != TYPE_DECL
)))
4918 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4919 /* Don't return non-types if we really prefer types. */
4920 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4921 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4927 /* Unscoped lookup of a global, iterate over namespaces, considering
4928 using namespace statements. */
4931 unqualified_namespace_lookup (name
, flags
)
4935 struct tree_binding _binding
;
4936 tree b
= binding_init (&_binding
);
4937 tree initial
= current_decl_namespace();
4938 tree scope
= initial
;
4940 struct binding_level
*level
;
4941 tree val
= NULL_TREE
;
4945 val
= binding_for_name (name
, scope
);
4947 /* Initialize binding for this context. */
4948 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4949 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4951 /* Add all _DECLs seen through local using-directives. */
4952 for (level
= current_binding_level
;
4953 !level
->namespace_p
;
4954 level
= level
->level_chain
)
4955 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4957 /* Give up because of error. */
4960 /* Add all _DECLs seen through global using-directives. */
4961 /* XXX local and global using lists should work equally. */
4965 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4967 /* Give up because of error. */
4969 if (siter
== scope
) break;
4970 siter
= CP_DECL_CONTEXT (siter
);
4973 val
= select_decl (b
, flags
);
4974 if (scope
== global_namespace
)
4976 scope
= CP_DECL_CONTEXT (scope
);
4981 /* Combine prefer_type and namespaces_only into flags. */
4984 lookup_flags (prefer_type
, namespaces_only
)
4985 int prefer_type
, namespaces_only
;
4987 if (namespaces_only
)
4988 return LOOKUP_PREFER_NAMESPACES
;
4989 if (prefer_type
> 1)
4990 return LOOKUP_PREFER_TYPES
;
4991 if (prefer_type
> 0)
4992 return LOOKUP_PREFER_BOTH
;
4996 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4997 ignore it or not. Subroutine of lookup_name_real. */
5000 qualify_lookup (val
, flags
)
5004 if (val
== NULL_TREE
)
5006 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
5008 if ((flags
& LOOKUP_PREFER_TYPES
)
5009 && (TREE_CODE (val
) == TYPE_DECL
5010 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
5011 && DECL_CLASS_TEMPLATE_P (val
))))
5013 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
5018 /* Look up NAME in the current binding level and its superiors in the
5019 namespace of variables, functions and typedefs. Return a ..._DECL
5020 node of some kind representing its definition if there is only one
5021 such declaration, or return a TREE_LIST with all the overloaded
5022 definitions if there are many, or return 0 if it is undefined.
5024 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
5025 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
5026 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
5027 Otherwise we prefer non-TYPE_DECLs.
5029 If NONCLASS is non-zero, we don't look for the NAME in class scope,
5030 using IDENTIFIER_CLASS_VALUE. */
5033 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
5035 int prefer_type
, nonclass
, namespaces_only
;
5039 tree from_obj
= NULL_TREE
;
5040 tree locval
, classval
;
5043 /* Hack: copy flag set by parser, if set. */
5044 if (only_namespace_names
)
5045 namespaces_only
= 1;
5047 if (prefer_type
== -2)
5049 extern int looking_for_typename
;
5050 tree type
= NULL_TREE
;
5053 prefer_type
= looking_for_typename
;
5055 flags
= lookup_flags (prefer_type
, namespaces_only
);
5056 /* During parsing, we need to complain. */
5057 flags
|= LOOKUP_COMPLAIN
;
5058 /* If the next thing is '<', class templates are types. */
5059 if (looking_for_template
)
5060 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5062 /* std:: becomes :: for now. */
5063 if (got_scope
== std_node
)
5064 got_scope
= void_type_node
;
5068 else if (got_object
!= error_mark_node
)
5073 if (type
== error_mark_node
)
5074 return error_mark_node
;
5075 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5076 type
= TREE_TYPE (type
);
5079 type
= complete_type (type
);
5081 if (TREE_CODE (type
) == VOID_TYPE
)
5082 type
= global_namespace
;
5083 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5085 struct tree_binding b
;
5086 val
= binding_init (&b
);
5087 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5089 val
= select_decl (val
, flags
);
5091 else if (! IS_AGGR_TYPE (type
)
5092 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5093 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5094 || TREE_CODE (type
) == TYPENAME_TYPE
)
5095 /* Someone else will give an error about this if needed. */
5097 else if (TYPE_BEING_DEFINED (type
))
5099 val
= IDENTIFIER_CLASS_VALUE (name
);
5100 if (val
&& DECL_CONTEXT (val
) != type
)
5102 struct binding_level
*b
= class_binding_level
;
5103 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5105 tree t
= purpose_member (name
, b
->class_shadowed
);
5106 if (t
&& TREE_VALUE (t
)
5107 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5109 val
= TREE_VALUE (t
);
5114 if (val
== NULL_TREE
)
5115 val
= lookup_field (type
, name
, 0, 1);
5117 else if (type
== current_class_type
)
5118 val
= IDENTIFIER_CLASS_VALUE (name
);
5120 val
= lookup_member (type
, name
, 0, prefer_type
);
5127 else if (got_object
&& val
)
5131 flags
= lookup_flags (prefer_type
, namespaces_only
);
5133 locval
= classval
= NULL_TREE
;
5135 if (! namespace_bindings_p ())
5136 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5138 /* In C++ class fields are between local and global scope,
5139 just before the global scope. */
5140 if (current_class_type
&& ! nonclass
)
5142 classval
= IDENTIFIER_CLASS_VALUE (name
);
5143 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5144 /* Try to find values from base classes if we are presently
5145 defining a type. We are presently only interested in
5147 classval
= lookup_field (current_class_type
, name
, 0, 1);
5149 /* Add implicit 'typename' to types from template bases. lookup_field
5150 will do this for us. If classval is actually from an enclosing
5151 scope, lookup_nested_field will get it for us. */
5152 else if (processing_template_decl
5153 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5154 && ! currently_open_class (DECL_CONTEXT (classval
))
5155 && uses_template_parms (current_class_type
))
5156 classval
= lookup_field (current_class_type
, name
, 0, 1);
5158 /* yylex() calls this with -2, since we should never start digging for
5159 the nested name at the point where we haven't even, for example,
5160 created the COMPONENT_REF or anything like that. */
5161 if (classval
== NULL_TREE
)
5162 classval
= lookup_nested_field (name
, ! yylex
);
5164 classval
= qualify_lookup (classval
, flags
);
5167 if (locval
&& classval
)
5169 /* We have both a local binding and a class-level binding. This
5170 can happen in two ways:
5172 o We are in a member function of a class.
5173 o We are in a local class within a function.
5175 We need to determine which one of these situations is
5176 occuring, and give the innermost binding. One tricky bit is
5177 that with member templates we can be in the first case
5178 without CURRENT_FUNCTION_DECL being set. Consider
5180 struct A { template <class A> void f(A); };
5182 Here, when we look at the `A' in the parameter declaration
5183 for `f' we have a local binding (the template parameter) and
5184 a class-level binding (the TYPE_DECL for the class).
5185 Fortunately, if LOCVAL is a template parameter it is safe to
5186 take it; nothing within the scope of the template parameter
5187 is allowed to have the same name. */
5189 if (decl_template_parm_p (locval
))
5191 else if (current_scope () == current_function_decl
5192 && ! hack_decl_function_context (current_function_decl
))
5193 /* Not in a nested function. */
5197 /* This is incredibly horrible. The whole concept of
5198 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5199 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5201 tree lctx
= hack_decl_function_context (locval
);
5202 tree cctx
= hack_decl_function_context (classval
);
5204 if (lctx
== current_scope ())
5206 else if (lctx
== cctx
)
5209 /* I don't know which is right; let's just guess for now. */
5218 val
= unqualified_namespace_lookup (name
, flags
);
5220 /* Any other name takes precedence over an implicit typename. Warn the
5221 user about this potentially confusing lookup. */
5222 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5223 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5224 && TREE_TYPE (TREE_TYPE (val
)))
5226 if (locval
== NULL_TREE
)
5227 locval
= unqualified_namespace_lookup (name
, flags
);
5229 if (locval
&& val
!= locval
)
5235 /* To avoid redundant warnings, only warn when lexing, and the
5236 decls are significantly different. */
5237 subtype
= TREE_TYPE (TREE_TYPE (classval
));
5239 && ! (TREE_CODE (locval
) == TEMPLATE_DECL
5240 && CLASSTYPE_TEMPLATE_INFO (subtype
)
5241 && CLASSTYPE_TI_TEMPLATE (subtype
) == locval
)
5242 && ! (TREE_CODE (locval
) == TYPE_DECL
5243 && comptypes (TREE_TYPE (locval
), subtype
, 1)))
5245 static int explained
;
5247 cp_warning ("lookup of `%D' finds `%#D'", name
, locval
);
5249 (" instead of `%D' from dependent base class", classval
);
5253 cp_warning (" (use `typename %D' if that's what you meant)",
5263 /* This should only warn about types used in qualified-ids. */
5264 if (from_obj
&& from_obj
!= val
)
5266 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5267 && TREE_CODE (val
) == TYPE_DECL
5268 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5270 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5271 name
, got_object
, TREE_TYPE (from_obj
));
5272 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5276 /* We don't change val to from_obj if got_object depends on
5277 template parms because that breaks implicit typename for
5278 destructor calls. */
5279 if (! uses_template_parms (got_object
))
5283 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5284 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5286 /* Caller wants a class-or-namespace-name. */
5287 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5289 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5290 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5291 else if (TREE_TYPE (val
) == error_mark_node
)
5292 val
= error_mark_node
;
5294 /* If we have a single function from a using decl, pull it out. */
5295 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5296 val
= OVL_FUNCTION (val
);
5305 lookup_name_nonclass (name
)
5308 return lookup_name_real (name
, 0, 1, 0);
5312 lookup_function_nonclass (name
, args
)
5316 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5320 lookup_name_namespace_only (name
)
5323 /* type-or-namespace, nonclass, namespace_only */
5324 return lookup_name_real (name
, 1, 1, 1);
5328 lookup_name (name
, prefer_type
)
5332 return lookup_name_real (name
, prefer_type
, 0, 0);
5335 /* Similar to `lookup_name' but look only at current binding level. */
5338 lookup_name_current_level (name
)
5341 register tree t
= NULL_TREE
;
5343 if (current_binding_level
->namespace_p
)
5345 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5347 /* extern "C" function() */
5348 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5351 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5353 struct binding_level
*b
= current_binding_level
;
5356 if (purpose_member (name
, b
->shadowed
))
5357 return IDENTIFIER_LOCAL_VALUE (name
);
5368 /* Like lookup_name_current_level, but for types. */
5371 lookup_type_current_level (name
)
5374 register tree t
= NULL_TREE
;
5376 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5378 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5379 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5381 struct binding_level
*b
= current_binding_level
;
5384 if (purpose_member (name
, b
->type_shadowed
))
5385 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5397 begin_only_namespace_names ()
5399 only_namespace_names
= 1;
5403 end_only_namespace_names ()
5405 only_namespace_names
= 0;
5408 /* Arrange for the user to get a source line number, even when the
5409 compiler is going down in flames, so that she at least has a
5410 chance of working around problems in the compiler. We used to
5411 call error(), but that let the segmentation fault continue
5412 through; now, it's much more passive by asking them to send the
5413 maintainers mail about the problem. */
5417 int sig ATTRIBUTE_UNUSED
;
5419 signal (SIGSEGV
, SIG_DFL
);
5421 signal (SIGIOT
, SIG_DFL
);
5424 signal (SIGILL
, SIG_DFL
);
5427 signal (SIGABRT
, SIG_DFL
);
5430 signal (SIGBUS
, SIG_DFL
);
5432 my_friendly_abort (0);
5436 /* Unused -- brendan 970107 */
5437 /* Array for holding types considered "built-in". These types
5438 are output in the module in which `main' is defined. */
5439 static tree
*builtin_type_tdescs_arr
;
5440 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5443 /* Push the declarations of builtin types into the namespace.
5444 RID_INDEX, if < RID_MAX is the index of the builtin type
5445 in the array RID_POINTERS. NAME is the name used when looking
5446 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5449 record_builtin_type (rid_index
, name
, type
)
5454 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5455 tree tdecl
= NULL_TREE
;
5457 if ((int) rid_index
< (int) RID_MAX
)
5458 rname
= ridpointers
[(int) rid_index
];
5460 tname
= get_identifier (name
);
5462 TYPE_BUILT_IN (type
) = 1;
5466 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5467 set_identifier_type_value (tname
, NULL_TREE
);
5468 if ((int) rid_index
< (int) RID_MAX
)
5469 /* Built-in types live in the global namespace. */
5470 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5472 if (rname
!= NULL_TREE
)
5474 if (tname
!= NULL_TREE
)
5476 set_identifier_type_value (rname
, NULL_TREE
);
5477 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5481 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5482 set_identifier_type_value (rname
, NULL_TREE
);
5487 /* Record one of the standard Java types.
5488 * Declare it as having the given NAME.
5489 * If SIZE > 0, it is the size of one of the integral types;
5490 * otherwise it is the negative of the size of one of the other types. */
5493 record_builtin_java_type (name
, size
)
5499 type
= make_signed_type (size
);
5500 else if (size
> -32)
5501 { /* "__java_char" or ""__java_boolean". */
5502 type
= make_unsigned_type (-size
);
5503 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5506 { /* "__java_float" or ""__java_double". */
5507 type
= make_node (REAL_TYPE
);
5508 TYPE_PRECISION (type
) = - size
;
5511 record_builtin_type (RID_MAX
, name
, type
);
5512 decl
= TYPE_NAME (type
);
5513 DECL_IGNORED_P (decl
) = 1;
5514 TYPE_FOR_JAVA (type
) = 1;
5518 /* Push a type into the namespace so that the back-ends ignore it. */
5521 record_unknown_type (type
, name
)
5525 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5526 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5527 DECL_IGNORED_P (decl
) = 1;
5528 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5529 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5530 TYPE_ALIGN (type
) = 1;
5531 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5534 /* Push overloaded decl, in global scope, with one argument so it
5535 can be used as a callback from define_function. */
5538 push_overloaded_decl_1 (x
)
5541 push_overloaded_decl (x
, 0);
5548 auto_function (name
, type
, code
)
5550 enum built_in_function code
;
5552 return define_function
5553 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5554 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5558 /* Create the predefined scalar types of C,
5559 and some nodes representing standard constants (0, 1, (void *)0).
5560 Initialize the global binding level.
5561 Make definitions for built-in primitive functions. */
5564 init_decl_processing ()
5566 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5568 /* Data type of memcpy. */
5569 tree memcpy_ftype
, strlen_ftype
;
5570 int wchar_type_size
;
5572 tree array_domain_type
;
5573 tree vb_off_identifier
= NULL_TREE
;
5574 /* Function type `char *(char *, char *)' and similar ones */
5575 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5576 tree sizetype_endlink
;
5577 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5578 tree void_ftype
, void_ftype_int
, void_ftype_ptr
;
5580 /* Have to make these distinct before we try using them. */
5581 lang_name_cplusplus
= get_identifier ("C++");
5582 lang_name_c
= get_identifier ("C");
5583 lang_name_java
= get_identifier ("Java");
5585 /* Enter the global namespace. */
5586 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5587 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5588 current_lang_name
= lang_name_cplusplus
;
5589 push_namespace (get_identifier ("::"));
5590 global_namespace
= current_namespace
;
5591 current_lang_name
= NULL_TREE
;
5593 if (flag_strict_prototype
== 2)
5594 flag_strict_prototype
= pedantic
;
5596 strict_prototypes_lang_c
= flag_strict_prototype
;
5599 current_lang_name
= lang_name_c
;
5601 current_function_decl
= NULL_TREE
;
5602 named_labels
= NULL_TREE
;
5603 named_label_uses
= NULL
;
5604 current_binding_level
= NULL_BINDING_LEVEL
;
5605 free_binding_level
= NULL_BINDING_LEVEL
;
5607 #ifndef __CYGWIN32__
5608 /* Because most segmentation signals can be traced back into user
5609 code, catch them and at least give the user a chance of working
5610 around compiler bugs. */
5611 signal (SIGSEGV
, signal_catch
);
5613 /* We will also catch aborts in the back-end through signal_catch and
5614 give the user a chance to see where the error might be, and to defeat
5615 aborts in the back-end when there have been errors previously in their
5618 signal (SIGIOT
, signal_catch
);
5621 signal (SIGILL
, signal_catch
);
5624 signal (SIGABRT
, signal_catch
);
5627 signal (SIGBUS
, signal_catch
);
5629 #else /* ndef __CYGWIN32__ */
5630 /* Cygwin32 cannot handle catching signals other than
5631 SIGABRT yet. We hope this will cease to be the case soon. */
5633 signal (SIGABRT
, signal_catch
);
5635 #endif /* ndef __CYGWIN32__ */
5637 gcc_obstack_init (&decl_obstack
);
5639 /* Must lay these out before anything else gets laid out. */
5640 error_mark_node
= make_node (ERROR_MARK
);
5641 TREE_PERMANENT (error_mark_node
) = 1;
5642 TREE_TYPE (error_mark_node
) = error_mark_node
;
5643 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5644 TREE_TYPE (error_mark_list
) = error_mark_node
;
5646 /* Make the binding_level structure for global names. */
5648 global_binding_level
= current_binding_level
;
5649 /* The global level is the namespace level of ::. */
5650 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5651 declare_namespace_level ();
5653 this_identifier
= get_identifier (THIS_NAME
);
5654 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5655 ctor_identifier
= get_identifier (CTOR_NAME
);
5656 dtor_identifier
= get_identifier (DTOR_NAME
);
5657 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5658 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5659 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5660 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5661 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5662 if (flag_handle_signatures
)
5664 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5665 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5666 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5669 /* Define `int' and `char' first so that dbx will output them first. */
5671 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5672 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5674 /* Define `char', which is like either `signed char' or `unsigned char'
5675 but not the same as either. */
5679 ? make_signed_type (CHAR_TYPE_SIZE
)
5680 : make_unsigned_type (CHAR_TYPE_SIZE
));
5681 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5683 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5684 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5686 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5687 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5689 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5690 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5691 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5693 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5694 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5696 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5697 record_builtin_type (RID_MAX
, "long long unsigned int",
5698 long_long_unsigned_type_node
);
5699 record_builtin_type (RID_MAX
, "long long unsigned",
5700 long_long_unsigned_type_node
);
5702 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5703 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5704 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5705 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5706 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5708 /* `unsigned long' is the standard type for sizeof.
5709 Note that stddef.h uses `unsigned long',
5710 and this must agree, even if long and int are the same size. */
5712 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5715 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5717 /* Define both `signed char' and `unsigned char'. */
5718 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5719 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5720 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5721 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5723 /* These are types that type_for_size and type_for_mode use. */
5724 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5725 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5726 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5727 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5728 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5729 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5730 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5731 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5732 #if HOST_BITS_PER_WIDE_INT >= 64
5733 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5734 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5736 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5737 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5738 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5739 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5740 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5741 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5742 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5743 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5744 #if HOST_BITS_PER_WIDE_INT >= 64
5745 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5746 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5749 float_type_node
= make_node (REAL_TYPE
);
5750 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5751 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5752 layout_type (float_type_node
);
5754 double_type_node
= make_node (REAL_TYPE
);
5755 if (flag_short_double
)
5756 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5758 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5759 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5760 layout_type (double_type_node
);
5762 long_double_type_node
= make_node (REAL_TYPE
);
5763 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5764 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5765 layout_type (long_double_type_node
);
5767 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5768 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5769 complex_integer_type_node
));
5770 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5771 layout_type (complex_integer_type_node
);
5773 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5774 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5775 complex_float_type_node
));
5776 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5777 layout_type (complex_float_type_node
);
5779 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5780 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5781 complex_double_type_node
));
5782 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5783 layout_type (complex_double_type_node
);
5785 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5786 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5787 complex_long_double_type_node
));
5788 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5789 layout_type (complex_long_double_type_node
);
5791 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5792 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5793 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5794 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5795 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5796 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5797 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5798 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5800 integer_zero_node
= build_int_2 (0, 0);
5801 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5802 integer_one_node
= build_int_2 (1, 0);
5803 TREE_TYPE (integer_one_node
) = integer_type_node
;
5804 integer_two_node
= build_int_2 (2, 0);
5805 TREE_TYPE (integer_two_node
) = integer_type_node
;
5806 integer_three_node
= build_int_2 (3, 0);
5807 TREE_TYPE (integer_three_node
) = integer_type_node
;
5809 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5810 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5811 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5812 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5813 TYPE_PRECISION (boolean_type_node
) = 1;
5814 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5815 boolean_false_node
= build_int_2 (0, 0);
5816 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5817 boolean_true_node
= build_int_2 (1, 0);
5818 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5820 /* These are needed by stor-layout.c. */
5821 size_zero_node
= size_int (0);
5822 size_one_node
= size_int (1);
5824 signed_size_zero_node
= build_int_2 (0, 0);
5825 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5827 void_type_node
= make_node (VOID_TYPE
);
5828 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5829 layout_type (void_type_node
); /* Uses integer_zero_node. */
5830 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5831 TREE_PARMLIST (void_list_node
) = 1;
5833 null_pointer_node
= build_int_2 (0, 0);
5834 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5835 layout_type (TREE_TYPE (null_pointer_node
));
5837 /* Used for expressions that do nothing, but are not errors. */
5838 void_zero_node
= build_int_2 (0, 0);
5839 TREE_TYPE (void_zero_node
) = void_type_node
;
5841 string_type_node
= build_pointer_type (char_type_node
);
5842 const_string_type_node
5843 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5845 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5848 /* Make a type to be the domain of a few array types
5849 whose domains don't really matter.
5850 200 is small enough that it always fits in size_t
5851 and large enough that it can hold most function names for the
5852 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5853 array_domain_type
= build_index_type (build_int_2 (200, 0));
5855 /* Make a type for arrays of characters.
5856 With luck nothing will ever really depend on the length of this
5858 char_array_type_node
5859 = build_array_type (char_type_node
, array_domain_type
);
5860 /* Likewise for arrays of ints. */
5862 = build_array_type (integer_type_node
, array_domain_type
);
5864 /* This is just some anonymous class type. Nobody should ever
5865 need to look inside this envelope. */
5866 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5868 default_function_type
5869 = build_function_type (integer_type_node
, NULL_TREE
);
5871 ptr_type_node
= build_pointer_type (void_type_node
);
5873 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5875 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5877 endlink
= void_list_node
;
5878 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5879 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5880 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5882 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5883 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5884 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5885 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5886 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5888 void_ftype
= build_function_type (void_type_node
, endlink
);
5889 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5891 = build_function_type (void_type_node
,
5892 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5894 = build_exception_variant (void_ftype_ptr
,
5895 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5898 = build_function_type (float_type_node
,
5899 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5902 = build_function_type (double_type_node
, double_endlink
);
5904 ldouble_ftype_ldouble
5905 = build_function_type (long_double_type_node
,
5906 tree_cons (NULL_TREE
, long_double_type_node
,
5909 double_ftype_double_double
5910 = build_function_type (double_type_node
,
5911 tree_cons (NULL_TREE
, double_type_node
,
5915 = build_function_type (integer_type_node
, int_endlink
);
5918 = build_function_type (long_integer_type_node
,
5919 tree_cons (NULL_TREE
, long_integer_type_node
,
5922 int_ftype_cptr_cptr_sizet
5923 = build_function_type (integer_type_node
,
5924 tree_cons (NULL_TREE
, const_ptr_type_node
,
5925 tree_cons (NULL_TREE
, const_ptr_type_node
,
5926 tree_cons (NULL_TREE
,
5930 string_ftype_ptr_ptr
/* strcpy prototype */
5931 = build_function_type (string_type_node
,
5932 tree_cons (NULL_TREE
, string_type_node
,
5933 tree_cons (NULL_TREE
,
5934 const_string_type_node
,
5937 int_ftype_string_string
/* strcmp prototype */
5938 = build_function_type (integer_type_node
,
5939 tree_cons (NULL_TREE
, const_string_type_node
,
5940 tree_cons (NULL_TREE
,
5941 const_string_type_node
,
5944 strlen_ftype
/* strlen prototype */
5945 = build_function_type (sizetype
,
5946 tree_cons (NULL_TREE
, const_string_type_node
,
5949 memcpy_ftype
/* memcpy prototype */
5950 = build_function_type (ptr_type_node
,
5951 tree_cons (NULL_TREE
, ptr_type_node
,
5952 tree_cons (NULL_TREE
, const_ptr_type_node
,
5953 sizetype_endlink
)));
5955 if (flag_huge_objects
)
5956 delta_type_node
= long_integer_type_node
;
5958 delta_type_node
= short_integer_type_node
;
5960 builtin_function ("__builtin_constant_p", default_function_type
,
5961 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5963 builtin_return_address_fndecl
5964 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5965 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5967 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5968 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5970 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5971 BUILT_IN_ALLOCA
, "alloca");
5972 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5973 /* Define alloca, ffs as builtins.
5974 Declare _exit just to mark it as volatile. */
5975 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5977 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5978 BUILT_IN_ALLOCA
, NULL_PTR
);
5979 /* Suppress error if redefined as a non-function. */
5980 DECL_BUILT_IN_NONANSI (temp
) = 1;
5981 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5982 /* Suppress error if redefined as a non-function. */
5983 DECL_BUILT_IN_NONANSI (temp
) = 1;
5984 temp
= builtin_function ("_exit", void_ftype_int
,
5985 NOT_BUILT_IN
, NULL_PTR
);
5986 TREE_THIS_VOLATILE (temp
) = 1;
5987 TREE_SIDE_EFFECTS (temp
) = 1;
5988 /* Suppress error if redefined as a non-function. */
5989 DECL_BUILT_IN_NONANSI (temp
) = 1;
5992 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5993 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5995 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5997 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5999 builtin_function ("__builtin_labs", long_ftype_long
,
6000 BUILT_IN_LABS
, NULL_PTR
);
6001 builtin_function ("__builtin_saveregs", ptr_ftype
,
6002 BUILT_IN_SAVEREGS
, NULL_PTR
);
6003 builtin_function ("__builtin_classify_type", default_function_type
,
6004 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
6005 builtin_function ("__builtin_next_arg", ptr_ftype
,
6006 BUILT_IN_NEXT_ARG
, NULL_PTR
);
6007 builtin_function ("__builtin_args_info", int_ftype_int
,
6008 BUILT_IN_ARGS_INFO
, NULL_PTR
);
6009 builtin_function ("__builtin_setjmp",
6010 build_function_type (integer_type_node
,
6011 tree_cons (NULL_TREE
, ptr_type_node
,
6013 BUILT_IN_SETJMP
, NULL_PTR
);
6014 builtin_function ("__builtin_longjmp",
6015 build_function_type (integer_type_node
,
6016 tree_cons (NULL_TREE
, ptr_type_node
,
6017 tree_cons (NULL_TREE
,
6020 BUILT_IN_LONGJMP
, NULL_PTR
);
6022 /* Untyped call and return. */
6023 builtin_function ("__builtin_apply_args", ptr_ftype
,
6024 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
6026 temp
= tree_cons (NULL_TREE
,
6027 build_pointer_type (build_function_type (void_type_node
,
6029 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
6030 builtin_function ("__builtin_apply",
6031 build_function_type (ptr_type_node
, temp
),
6032 BUILT_IN_APPLY
, NULL_PTR
);
6033 builtin_function ("__builtin_return", void_ftype_ptr
,
6034 BUILT_IN_RETURN
, NULL_PTR
);
6036 /* Currently under experimentation. */
6037 builtin_function ("__builtin_memcpy", memcpy_ftype
,
6038 BUILT_IN_MEMCPY
, "memcpy");
6039 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
6040 BUILT_IN_MEMCMP
, "memcmp");
6041 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
6042 BUILT_IN_STRCMP
, "strcmp");
6043 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
6044 BUILT_IN_STRCPY
, "strcpy");
6045 builtin_function ("__builtin_strlen", strlen_ftype
,
6046 BUILT_IN_STRLEN
, "strlen");
6047 builtin_function ("__builtin_sqrtf", float_ftype_float
,
6048 BUILT_IN_FSQRT
, "sqrtf");
6049 builtin_function ("__builtin_fsqrt", double_ftype_double
,
6050 BUILT_IN_FSQRT
, NULL_PTR
);
6051 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
6052 BUILT_IN_FSQRT
, "sqrtl");
6053 builtin_function ("__builtin_sinf", float_ftype_float
,
6054 BUILT_IN_SIN
, "sinf");
6055 builtin_function ("__builtin_sin", double_ftype_double
,
6056 BUILT_IN_SIN
, "sin");
6057 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
6058 BUILT_IN_SIN
, "sinl");
6059 builtin_function ("__builtin_cosf", float_ftype_float
,
6060 BUILT_IN_COS
, "cosf");
6061 builtin_function ("__builtin_cos", double_ftype_double
,
6062 BUILT_IN_COS
, "cos");
6063 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
6064 BUILT_IN_COS
, "cosl");
6066 if (!flag_no_builtin
)
6068 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
6069 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
6070 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
6071 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
6072 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
6074 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
6075 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
6077 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
6079 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
6081 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
6082 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
6083 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
6084 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
6086 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
6087 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
6088 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
6089 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
6090 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
6091 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
6093 /* Declare these functions volatile
6094 to avoid spurious "control drops through" warnings. */
6095 temp
= builtin_function ("abort", void_ftype
,
6096 NOT_BUILT_IN
, NULL_PTR
);
6097 TREE_THIS_VOLATILE (temp
) = 1;
6098 TREE_SIDE_EFFECTS (temp
) = 1;
6099 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6101 DECL_BUILT_IN_NONANSI (temp
) = 1;
6102 temp
= builtin_function ("exit", void_ftype_int
,
6103 NOT_BUILT_IN
, NULL_PTR
);
6104 TREE_THIS_VOLATILE (temp
) = 1;
6105 TREE_SIDE_EFFECTS (temp
) = 1;
6106 DECL_BUILT_IN_NONANSI (temp
) = 1;
6110 /* Support for these has not been written in either expand_builtin
6111 or build_function_call. */
6112 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6113 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6114 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6116 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6118 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6119 BUILT_IN_FMOD
, NULL_PTR
);
6120 builtin_function ("__builtin_frem", double_ftype_double_double
,
6121 BUILT_IN_FREM
, NULL_PTR
);
6122 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6123 BUILT_IN_MEMSET
, NULL_PTR
);
6124 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6126 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6130 /* C++ extensions */
6132 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6133 record_unknown_type (unknown_type_node
, "unknown type");
6135 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6136 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6138 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6140 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6142 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6143 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6145 /* This is for handling opaque types in signatures. */
6146 opaque_type_node
= copy_node (ptr_type_node
);
6147 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6148 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6150 /* This is special for C++ so functions can be overloaded. */
6152 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6153 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6154 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6155 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6157 = TREE_UNSIGNED (wchar_type_node
)
6158 ? unsigned_wchar_type_node
6159 : signed_wchar_type_node
;
6160 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6162 /* Artificial declaration of wchar_t -- can be bashed */
6163 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6165 pushdecl (wchar_decl_node
);
6167 /* This is for wide string constants. */
6168 wchar_array_type_node
6169 = build_array_type (wchar_type_node
, array_domain_type
);
6171 if (flag_vtable_thunks
)
6173 /* Make sure we get a unique function type, so we can give
6174 its pointer type a name. (This wins for gdb.) */
6175 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6176 TREE_TYPE (vfunc_type
) = integer_type_node
;
6177 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6178 layout_type (vfunc_type
);
6180 vtable_entry_type
= build_pointer_type (vfunc_type
);
6184 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6185 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6187 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6189 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6191 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6194 /* Make this part of an invisible union. */
6195 fields
[3] = copy_node (fields
[2]);
6196 TREE_TYPE (fields
[3]) = delta_type_node
;
6197 DECL_NAME (fields
[3]) = delta2_identifier
;
6198 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6199 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6200 TREE_UNSIGNED (fields
[3]) = 0;
6201 TREE_CHAIN (fields
[2]) = fields
[3];
6202 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6204 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6207 = build_array_type (vtable_entry_type
, NULL_TREE
);
6208 layout_type (vtbl_type_node
);
6209 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6210 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6211 vtbl_ptr_type_node
= build_pointer_type (vtable_entry_type
);
6212 layout_type (vtbl_ptr_type_node
);
6213 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_ptr_type_node
);
6215 /* Simplify life by making a "sigtable_entry_type". Give its
6216 fields names so that the debugger can use them. */
6218 if (flag_handle_signatures
)
6220 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6221 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6223 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6225 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6227 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6229 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6232 /* Set the alignment to the max of the alignment of ptr_type_node and
6233 delta_type_node. Double alignment wastes a word on the Sparc. */
6234 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6235 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6239 /* Make this part of an invisible union. */
6240 fields
[5] = copy_node (fields
[4]);
6241 TREE_TYPE (fields
[5]) = delta_type_node
;
6242 DECL_NAME (fields
[5]) = vt_off_identifier
;
6243 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6244 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6245 TREE_UNSIGNED (fields
[5]) = 0;
6246 TREE_CHAIN (fields
[4]) = fields
[5];
6248 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6249 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6252 std_node
= build_decl (NAMESPACE_DECL
,
6253 get_identifier (flag_honor_std
? "fake std":"std"),
6255 pushdecl (std_node
);
6257 global_type_node
= make_node (LANG_TYPE
);
6258 record_unknown_type (global_type_node
, "global type");
6261 current_lang_name
= lang_name_cplusplus
;
6264 tree bad_alloc_type_node
, newtype
, deltype
;
6266 push_namespace (get_identifier ("std"));
6267 bad_alloc_type_node
= xref_tag
6268 (class_type_node
, get_identifier ("bad_alloc"), 1);
6271 newtype
= build_exception_variant
6272 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6273 deltype
= build_exception_variant
6274 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6275 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6276 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6277 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6278 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6282 = define_function ("__pure_virtual", void_ftype
,
6283 NOT_BUILT_IN
, 0, 0);
6285 /* Perform other language dependent initializations. */
6286 init_class_processing ();
6287 init_init_processing ();
6288 init_search_processing ();
6290 init_rtti_processing ();
6292 if (flag_exceptions
)
6293 init_exception_processing ();
6296 flag_inline_functions
= 0;
6299 if (! supports_one_only ())
6302 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6303 declare_function_name ();
6305 /* Prepare to check format strings against argument lists. */
6306 init_function_format_info ();
6308 /* Show we use EH for cleanups. */
6309 using_eh_for_cleanups ();
6311 print_error_function
= lang_print_error_function
;
6312 lang_get_alias_set
= &c_get_alias_set
;
6314 /* Maintain consistency. Perhaps we should just complain if they
6315 say -fwritable-strings? */
6316 if (flag_writable_strings
)
6317 flag_const_strings
= 0;
6320 /* Function to print any language-specific context for an error message. */
6323 lang_print_error_function (file
)
6326 default_print_error_function (file
);
6327 maybe_print_template_context ();
6330 /* Make a definition for a builtin function named NAME and whose data type
6331 is TYPE. TYPE should be a function type with argument types.
6332 FUNCTION_CODE tells later passes how to compile calls to this function.
6333 See tree.h for its possible values.
6335 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6336 the name to be called if we can't opencode the function. */
6339 define_function (name
, type
, function_code
, pfn
, library_name
)
6342 enum built_in_function function_code
;
6343 void (*pfn
) PROTO((tree
));
6346 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6347 DECL_EXTERNAL (decl
) = 1;
6348 TREE_PUBLIC (decl
) = 1;
6349 DECL_ARTIFICIAL (decl
) = 1;
6351 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6352 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6354 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6355 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6356 function in the namespace. */
6357 if (pfn
) (*pfn
) (decl
);
6359 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6360 make_function_rtl (decl
);
6361 if (function_code
!= NOT_BUILT_IN
)
6363 DECL_BUILT_IN (decl
) = 1;
6364 DECL_FUNCTION_CODE (decl
) = function_code
;
6369 /* When we call finish_struct for an anonymous union, we create
6370 default copy constructors and such. But, an anonymous union
6371 shouldn't have such things; this function undoes the damage to the
6372 anonymous union type T.
6374 (The reason that we create the synthesized methods is that we don't
6375 distinguish `union { int i; }' from `typedef union { int i; } U'.
6376 The first is an anonymous union; the second is just an ordinary
6380 fixup_anonymous_union (t
)
6385 /* Wipe out memory of synthesized methods */
6386 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6387 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6388 TYPE_HAS_INIT_REF (t
) = 0;
6389 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6390 TYPE_HAS_ASSIGN_REF (t
) = 0;
6391 TYPE_HAS_ASSIGNMENT (t
) = 0;
6392 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6394 /* Splice the implicitly generated functions out of the TYPE_METHODS
6396 q
= &TYPE_METHODS (t
);
6399 if (DECL_ARTIFICIAL (*q
))
6400 *q
= TREE_CHAIN (*q
);
6402 q
= &TREE_CHAIN (*q
);
6405 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6406 function members. */
6407 if (TYPE_METHODS (t
))
6408 error ("an anonymous union cannot have function members");
6411 /* Called when a declaration is seen that contains no names to declare.
6412 If its type is a reference to a structure, union or enum inherited
6413 from a containing scope, shadow that tag name for the current scope
6414 with a forward reference.
6415 If its type defines a new named structure or union
6416 or defines an enum, it is valid but we need not do anything here.
6417 Otherwise, it is an error.
6419 C++: may have to grok the declspecs to learn about static,
6420 complain for anonymous unions. */
6423 shadow_tag (declspecs
)
6427 tree ob_modifier
= NULL_TREE
;
6429 register enum tree_code code
, ok_code
= ERROR_MARK
;
6430 register tree t
= NULL_TREE
;
6432 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6434 register tree value
= TREE_VALUE (link
);
6436 code
= TREE_CODE (value
);
6437 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6439 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6441 maybe_process_partial_specialization (value
);
6447 else if (value
== ridpointers
[(int) RID_STATIC
]
6448 || value
== ridpointers
[(int) RID_EXTERN
]
6449 || value
== ridpointers
[(int) RID_AUTO
]
6450 || value
== ridpointers
[(int) RID_REGISTER
]
6451 || value
== ridpointers
[(int) RID_INLINE
]
6452 || value
== ridpointers
[(int) RID_VIRTUAL
]
6453 || value
== ridpointers
[(int) RID_EXPLICIT
])
6454 ob_modifier
= value
;
6457 /* This is where the variables in an anonymous union are
6458 declared. An anonymous union declaration looks like:
6460 because there is no declarator after the union, the parser
6461 sends that declaration here. */
6462 if (ok_code
== UNION_TYPE
6464 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6465 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6466 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6467 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6469 fixup_anonymous_union (t
);
6471 if (TYPE_FIELDS (t
))
6473 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6475 finish_anon_union (decl
);
6480 /* Anonymous unions are objects, that's why we only check for
6481 inappropriate specifiers in this branch. */
6485 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6486 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6487 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6488 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6489 cp_error ("`%D' can only be specified for constructors",
6492 cp_error ("`%D' can only be specified for objects and functions",
6497 cp_error ("abstract declarator used as declaration");
6498 else if (found_tag
> 1)
6499 pedwarn ("multiple types in one declaration");
6503 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6506 groktypename (typename
)
6509 if (TREE_CODE (typename
) != TREE_LIST
)
6511 return grokdeclarator (TREE_VALUE (typename
),
6512 TREE_PURPOSE (typename
),
6513 TYPENAME
, 0, NULL_TREE
);
6516 /* Decode a declarator in an ordinary declaration or data definition.
6517 This is called as soon as the type information and variable name
6518 have been parsed, before parsing the initializer if any.
6519 Here we create the ..._DECL node, fill in its type,
6520 and put it on the list of decls for the current context.
6521 The ..._DECL node is returned as the value.
6523 Exception: for arrays where the length is not specified,
6524 the type is left null, to be filled in by `cp_finish_decl'.
6526 Function definitions do not come here; they go to start_function
6527 instead. However, external and forward declarations of functions
6528 do go through here. Structure field declarations are done by
6529 grokfield and not through here. */
6531 /* Set this to zero to debug not using the temporary obstack
6532 to parse initializers. */
6533 int debug_temp_inits
= 1;
6536 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6537 tree declarator
, declspecs
;
6539 tree attributes
, prefix_attributes
;
6542 register tree type
, tem
;
6544 extern int have_extern_spec
;
6545 extern int used_extern_spec
;
6548 /* See code below that used this. */
6549 int init_written
= initialized
;
6552 /* This should only be done once on the top most decl. */
6553 if (have_extern_spec
&& !used_extern_spec
)
6555 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6557 used_extern_spec
= 1;
6560 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6562 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6565 type
= TREE_TYPE (decl
);
6567 /* Don't lose if destructors must be executed at file-level. */
6568 if (! processing_template_decl
&& TREE_STATIC (decl
)
6569 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6570 && !TREE_PERMANENT (decl
))
6572 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6573 decl
= copy_node (decl
);
6574 if (TREE_CODE (type
) == ARRAY_TYPE
)
6576 tree itype
= TYPE_DOMAIN (type
);
6577 if (itype
&& ! TREE_PERMANENT (itype
))
6579 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6580 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6581 TREE_TYPE (decl
) = type
;
6588 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6589 ? DECL_CLASS_CONTEXT (decl
)
6590 : DECL_CONTEXT (decl
);
6592 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6593 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6595 /* When parsing the initializer, lookup should use the object's
6597 push_decl_namespace (context
);
6600 /* We are only interested in class contexts, later. */
6601 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6602 context
= NULL_TREE
;
6605 /* Is it valid for this decl to have an initializer at all?
6606 If not, set INITIALIZED to zero, which will indirectly
6607 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6608 switch (TREE_CODE (decl
))
6611 /* typedef foo = bar means give foo the same type as bar.
6612 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6613 Any other case of an initialization in a TYPE_DECL is an error. */
6614 if (pedantic
|| list_length (declspecs
) > 1)
6616 cp_error ("typedef `%D' is initialized", decl
);
6622 cp_error ("function `%#D' is initialized like a variable", decl
);
6627 if (! processing_template_decl
)
6629 if (type
!= error_mark_node
)
6631 if (TYPE_SIZE (type
) != NULL_TREE
6632 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6635 ("variable-sized object `%D' may not be initialized",
6640 if (TREE_CODE (type
) == ARRAY_TYPE
6641 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6644 ("elements of array `%#D' have incomplete type", decl
);
6653 if (! toplevel_bindings_p ()
6654 && DECL_EXTERNAL (decl
))
6655 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6657 DECL_EXTERNAL (decl
) = 0;
6658 if (toplevel_bindings_p ())
6659 TREE_STATIC (decl
) = 1;
6661 /* Tell `pushdecl' this is an initialized decl
6662 even though we don't yet have the initializer expression.
6663 Also tell `cp_finish_decl' it may store the real initializer. */
6664 DECL_INITIAL (decl
) = error_mark_node
;
6667 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6669 if (TREE_CODE (decl
) == VAR_DECL
)
6671 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6672 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6673 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6676 if (DECL_CONTEXT (field
) != context
)
6678 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6679 DECL_CONTEXT (field
), DECL_NAME (decl
),
6680 context
, DECL_NAME (decl
));
6681 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6683 /* Static data member are tricky; an in-class initialization
6684 still doesn't provide a definition, so the in-class
6685 declaration will have DECL_EXTERNAL set, but will have an
6686 initialization. Thus, duplicate_decls won't warn
6687 about this situation, and so we check here. */
6688 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6689 cp_error ("duplicate initialization of %D", decl
);
6690 if (duplicate_decls (decl
, field
))
6696 tree field
= check_classfn (context
, decl
);
6697 if (field
&& duplicate_decls (decl
, field
))
6701 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6702 DECL_IN_AGGR_P (decl
) = 0;
6703 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6704 || CLASSTYPE_USE_TEMPLATE (context
))
6705 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6707 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6708 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6711 pushclass (context
, 2);
6714 #ifdef SET_DEFAULT_DECL_ATTRIBUTES
6715 SET_DEFAULT_DECL_ATTRIBUTES (decl
, attributes
);
6718 /* Set attributes here so if duplicate decl, will have proper attributes. */
6719 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6721 /* Add this decl to the current binding level, but not if it
6722 comes from another scope, e.g. a static member variable.
6723 TEM may equal DECL or it may be a previous decl of the same name. */
6725 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6726 /* Definitions of namespace members outside their namespace are
6728 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6729 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6730 || TREE_CODE (type
) == LANG_TYPE
6731 /* The declaration of template specializations does not affect
6732 the functions available for overload resolution, so we do not
6734 || (TREE_CODE (decl
) == FUNCTION_DECL
6735 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6738 tem
= pushdecl (decl
);
6740 if (processing_template_decl
)
6742 if (! current_function_decl
)
6743 tem
= push_template_decl (tem
);
6744 else if (minimal_parse_mode
)
6746 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6747 copy_to_permanent (declspecs
),
6752 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6753 /* Tell the back-end to use or not use .common as appropriate. If we say
6754 -fconserve-space, we want this to save .data space, at the expense of
6755 wrong semantics. If we say -fno-conserve-space, we want this to
6756 produce errors about redefs; to do this we force variables into the
6758 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6761 if (! processing_template_decl
)
6764 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6765 push_obstacks_nochange ();
6768 /* We have no way of knowing whether the initializer will need to be
6769 evaluated at run-time or not until we've parsed it, so let's just put
6770 it in the permanent obstack. (jason) */
6772 && ! (TREE_CODE (tem
) == PARM_DECL
6773 || (TREE_READONLY (tem
)
6774 && (TREE_CODE (tem
) == VAR_DECL
6775 || TREE_CODE (tem
) == FIELD_DECL
))))
6777 /* When parsing and digesting the initializer,
6778 use temporary storage. Do this even if we will ignore the value. */
6779 if (toplevel_bindings_p () && debug_temp_inits
)
6781 if (processing_template_decl
6782 || TYPE_NEEDS_CONSTRUCTING (type
)
6783 || TREE_CODE (type
) == REFERENCE_TYPE
)
6784 /* In this case, the initializer must lay down in permanent
6785 storage, since it will be saved until `finish_file' is run. */
6788 temporary_allocation ();
6800 tree type
= TREE_TYPE (decl
);
6801 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6803 /* If this type of object needs a cleanup, and control may
6804 jump past it, make a new binding level so that it is cleaned
6805 up only when it is initialized first. */
6806 if (TYPE_NEEDS_DESTRUCTOR (type
)
6807 && current_binding_level
->more_cleanups_ok
== 0)
6808 pushlevel_temporary (1);
6811 /* Is it valid for this decl to have an initializer at all?
6812 If not, set INITIALIZED to zero, which will indirectly
6813 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6815 /* Don't allow initializations for incomplete types except for
6816 arrays which might be completed by the initialization. */
6817 if (type
== error_mark_node
)
6818 ; /* Don't complain again. */
6819 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6820 ; /* A complete type is ok. */
6821 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6823 cp_error ("variable `%#D' has initializer but incomplete type",
6826 type
= TREE_TYPE (decl
) = error_mark_node
;
6828 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6830 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6831 cp_error ("elements of array `%#D' have incomplete type", decl
);
6832 /* else we already gave an error in start_decl. */
6838 && TREE_CODE (decl
) != TYPE_DECL
6839 && TREE_CODE (decl
) != TEMPLATE_DECL
6840 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6842 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6843 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6845 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6847 /* Change the type so that assemble_variable will give
6848 DECL an rtl we can live with: (mem (const_int 0)). */
6849 type
= TREE_TYPE (decl
) = error_mark_node
;
6853 /* If any base type in the hierarchy of TYPE needs a constructor,
6854 then we set initialized to 1. This way any nodes which are
6855 created for the purposes of initializing this aggregate
6856 will live as long as it does. This is necessary for global
6857 aggregates which do not have their initializers processed until
6858 the end of the file. */
6859 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6864 /* We don't do this yet for GNU C++. */
6865 /* For a local variable, define the RTL now. */
6866 if (! toplevel_bindings_p ()
6867 /* But not if this is a duplicate decl
6868 and we preserved the rtl from the previous one
6869 (which may or may not happen). */
6870 && DECL_RTL (tem
) == NULL_RTX
)
6872 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6874 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6875 && DECL_INITIAL (tem
) != NULL_TREE
)
6881 DECL_INITIAL (decl
) = NULL_TREE
;
6884 /* Handle initialization of references.
6885 These three arguments are from `cp_finish_decl', and have the
6886 same meaning here that they do there.
6888 Quotes on semantics can be found in ARM 8.4.3. */
6891 grok_reference_init (decl
, type
, init
)
6892 tree decl
, type
, init
;
6896 if (init
== NULL_TREE
)
6898 if ((DECL_LANG_SPECIFIC (decl
) == 0
6899 || DECL_IN_AGGR_P (decl
) == 0)
6900 && ! DECL_THIS_EXTERN (decl
))
6902 cp_error ("`%D' declared as reference but not initialized", decl
);
6903 if (TREE_CODE (decl
) == VAR_DECL
)
6904 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6909 if (init
== error_mark_node
)
6912 if (TREE_CODE (type
) == REFERENCE_TYPE
6913 && TREE_CODE (init
) == CONSTRUCTOR
)
6915 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6919 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6920 /* decay_conversion is probably wrong for references to functions. */
6921 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6923 if (TREE_CODE (init
) == TREE_LIST
)
6924 init
= build_compound_expr (init
);
6926 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6927 init
= convert_from_reference (init
);
6929 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6930 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6932 /* Note: default conversion is only called in very special cases. */
6933 init
= default_conversion (init
);
6936 tmp
= convert_to_reference
6937 (type
, init
, CONV_IMPLICIT
,
6938 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6940 if (tmp
== error_mark_node
)
6942 else if (tmp
!= NULL_TREE
)
6945 DECL_INITIAL (decl
) = save_expr (init
);
6949 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6953 /* ?? Can this be optimized in some cases to
6954 hand back the DECL_INITIAL slot?? */
6955 if (TYPE_SIZE (TREE_TYPE (type
)))
6957 init
= convert_from_reference (decl
);
6958 if (TREE_PERMANENT (decl
))
6959 init
= copy_to_permanent (init
);
6960 SET_DECL_REFERENCE_SLOT (decl
, init
);
6963 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6965 expand_static_init (decl
, DECL_INITIAL (decl
));
6966 DECL_INITIAL (decl
) = NULL_TREE
;
6971 if (TREE_CODE (decl
) == VAR_DECL
)
6972 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6976 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6977 mucking with forces it does not comprehend (i.e. initialization with a
6978 constructor). If we are at global scope and won't go into COMMON, fill
6979 it in with a dummy CONSTRUCTOR to force the variable into .data;
6980 otherwise we can use error_mark_node. */
6983 obscure_complex_init (decl
, init
)
6986 if (! flag_no_inline
&& TREE_STATIC (decl
))
6988 if (extract_init (decl
, init
))
6992 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6993 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6994 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6998 DECL_INITIAL (decl
) = error_mark_node
;
7003 /* Finish processing of a declaration;
7004 install its line number and initial value.
7005 If the length of an array type is not known before,
7006 it must be determined now, from the initial value, or it is an error.
7008 Call `pop_obstacks' iff NEED_POP is nonzero.
7010 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
7011 for aggregates that have constructors alive on the permanent obstack,
7012 so that the global initializing functions can be written at the end.
7014 INIT0 holds the value of an initializer that should be allowed to escape
7017 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
7018 if the (init) syntax was used.
7020 For functions that take default parameters, DECL points to its
7021 "maximal" instantiation. `cp_finish_decl' must then also declared its
7022 subsequently lower and lower forms of instantiation, checking for
7023 ambiguity as it goes. This can be sped up later. */
7026 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
7033 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
7035 int temporary
= allocation_temporary_p ();
7036 char *asmspec
= NULL
;
7037 int was_readonly
= 0;
7038 int already_used
= 0;
7040 /* If this is 0, then we did not change obstacks. */
7044 error ("assignment (not initialization) in declaration");
7048 /* If a name was specified, get the string. */
7050 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
7052 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
7054 cp_error ("Cannot initialize `%D' to namespace `%D'",
7059 if (TREE_CODE (decl
) == VAR_DECL
7060 && DECL_CONTEXT (decl
)
7061 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
7062 && DECL_CONTEXT (decl
) != current_namespace
7065 /* Leave the namespace of the object. */
7066 pop_decl_namespace ();
7069 /* If the type of the thing we are declaring either has
7070 a constructor, or has a virtual function table pointer,
7071 AND its initialization was accepted by `start_decl',
7072 then we stayed on the permanent obstack through the
7073 declaration, otherwise, changed obstacks as GCC would. */
7075 type
= TREE_TYPE (decl
);
7077 if (type
== error_mark_node
)
7079 if (toplevel_bindings_p () && temporary
)
7080 end_temporary_allocation ();
7085 if (processing_template_decl
)
7087 if (init
&& DECL_INITIAL (decl
))
7088 DECL_INITIAL (decl
) = init
;
7089 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
7091 tree stmt
= DECL_VINDEX (decl
);
7092 /* If the decl is declaring a member of a local class (in a
7093 template function), the DECL_VINDEX will either be NULL,
7094 or it will be an actual virtual function index, not a
7096 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
7098 DECL_VINDEX (decl
) = NULL_TREE
;
7099 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
7106 /* Take care of TYPE_DECLs up front. */
7107 if (TREE_CODE (decl
) == TYPE_DECL
)
7109 if (init
&& DECL_INITIAL (decl
))
7111 /* typedef foo = bar; store the type of bar as the type of foo. */
7112 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
7113 DECL_INITIAL (decl
) = init
= NULL_TREE
;
7115 if (type
!= error_mark_node
7116 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
7118 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
7119 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
7120 set_identifier_type_value (DECL_NAME (decl
), type
);
7121 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7123 GNU_xref_decl (current_function_decl
, decl
);
7125 /* If we have installed this as the canonical typedef for this
7126 type, and that type has not been defined yet, delay emitting
7127 the debug information for it, as we will emit it later. */
7128 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7129 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7130 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7132 rest_of_decl_compilation (decl
, NULL_PTR
,
7133 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7136 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7138 ttype
= target_type (type
);
7141 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7142 && TYPE_NEEDS_CONSTRUCTING (type
))
7145 /* Currently, GNU C++ puts constants in text space, making them
7146 impossible to initialize. In the future, one would hope for
7147 an operating system which understood the difference between
7148 initialization and the running of a program. */
7150 TREE_READONLY (decl
) = 0;
7153 if (TREE_CODE (decl
) == FIELD_DECL
)
7155 if (init
&& init
!= error_mark_node
)
7156 my_friendly_assert (TREE_PERMANENT (init
), 147);
7160 /* This must override the asm specifier which was placed
7161 by grokclassfn. Lay this out fresh. */
7162 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7163 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7164 make_decl_rtl (decl
, asmspec
, 0);
7167 /* If `start_decl' didn't like having an initialization, ignore it now. */
7168 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7170 else if (DECL_EXTERNAL (decl
))
7172 else if (TREE_CODE (type
) == REFERENCE_TYPE
7173 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7175 if (TREE_STATIC (decl
))
7176 make_decl_rtl (decl
, NULL_PTR
,
7177 toplevel_bindings_p ()
7178 || pseudo_global_level_p ());
7179 grok_reference_init (decl
, type
, init
);
7183 GNU_xref_decl (current_function_decl
, decl
);
7185 if (TREE_CODE (decl
) == FIELD_DECL
)
7187 else if (TREE_CODE (decl
) == CONST_DECL
)
7189 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7191 DECL_INITIAL (decl
) = init
;
7193 /* This will keep us from needing to worry about our obstacks. */
7194 my_friendly_assert (init
!= NULL_TREE
, 149);
7199 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7201 if (TREE_CODE (type
) == ARRAY_TYPE
)
7202 init
= digest_init (type
, init
, (tree
*) 0);
7203 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7205 if (TYPE_NON_AGGREGATE_CLASS (type
))
7207 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7209 init
= error_mark_node
;
7212 goto dont_use_constructor
;
7217 dont_use_constructor
:
7218 if (TREE_CODE (init
) != TREE_VEC
)
7219 init
= store_init_value (decl
, init
);
7223 /* We must hide the initializer so that expand_decl
7224 won't try to do something it does not understand. */
7225 init
= obscure_complex_init (decl
, init
);
7227 else if (DECL_EXTERNAL (decl
))
7229 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7230 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7233 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7234 ctype
= TREE_TYPE (ctype
);
7235 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7237 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7238 cp_error ("structure `%D' with uninitialized const members", decl
);
7239 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7240 cp_error ("structure `%D' with uninitialized reference members",
7244 if (TREE_CODE (decl
) == VAR_DECL
7245 && !DECL_INITIAL (decl
)
7246 && !TYPE_NEEDS_CONSTRUCTING (type
)
7247 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7248 cp_error ("uninitialized const `%D'", decl
);
7250 if (TYPE_SIZE (type
) != NULL_TREE
7251 && TYPE_NEEDS_CONSTRUCTING (type
))
7252 init
= obscure_complex_init (decl
, NULL_TREE
);
7254 else if (TREE_CODE (decl
) == VAR_DECL
7255 && TREE_CODE (type
) != REFERENCE_TYPE
7256 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7258 /* ``Unless explicitly declared extern, a const object does not have
7259 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7260 However, if it's `const int foo = 1; const int foo;', don't complain
7261 about the second decl, since it does have an initializer before.
7262 We deliberately don't complain about arrays, because they're
7263 supposed to be initialized by a constructor. */
7264 if (! DECL_INITIAL (decl
)
7265 && TREE_CODE (type
) != ARRAY_TYPE
7266 && (!pedantic
|| !current_class_type
))
7267 cp_error ("uninitialized const `%#D'", decl
);
7270 /* For top-level declaration, the initial value was read in
7271 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7272 must go in the permanent obstack; but don't discard the
7273 temporary data yet. */
7275 if (toplevel_bindings_p () && temporary
)
7276 end_temporary_allocation ();
7278 /* Deduce size of array from initialization, if not already known. */
7280 if (TREE_CODE (type
) == ARRAY_TYPE
7281 && TYPE_DOMAIN (type
) == NULL_TREE
7282 && TREE_CODE (decl
) != TYPE_DECL
)
7285 = (TREE_STATIC (decl
)
7286 /* Even if pedantic, an external linkage array
7287 may have incomplete type at first. */
7288 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7289 : !DECL_EXTERNAL (decl
));
7290 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7291 int failure
= complete_array_type (type
, initializer
, do_default
);
7294 cp_error ("initializer fails to determine size of `%D'", decl
);
7299 cp_error ("array size missing in `%D'", decl
);
7300 /* If a `static' var's size isn't known, make it extern as
7301 well as static, so it does not get allocated. If it's not
7302 `static', then don't mark it extern; finish_incomplete_decl
7303 will give it a default size and it will get allocated. */
7304 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7305 DECL_EXTERNAL (decl
) = 1;
7308 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7309 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7311 cp_error ("zero-size array `%D'", decl
);
7313 layout_decl (decl
, 0);
7316 if (TREE_CODE (decl
) == VAR_DECL
)
7318 if (DECL_SIZE (decl
) == NULL_TREE
7319 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7320 layout_decl (decl
, 0);
7322 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7324 /* A static variable with an incomplete type:
7325 that is an error if it is initialized.
7326 Otherwise, let it through, but if it is not `extern'
7327 then it may cause an error message later. */
7328 if (DECL_INITIAL (decl
) != NULL_TREE
)
7329 cp_error ("storage size of `%D' isn't known", decl
);
7332 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7334 /* An automatic variable with an incomplete type: that is an error.
7335 Don't talk about array types here, since we took care of that
7336 message in grokdeclarator. */
7337 cp_error ("storage size of `%D' isn't known", decl
);
7338 TREE_TYPE (decl
) = error_mark_node
;
7340 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7341 /* Let debugger know it should output info for this type. */
7342 note_debug_info_needed (ttype
);
7344 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7345 note_debug_info_needed (DECL_CONTEXT (decl
));
7347 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7348 && DECL_SIZE (decl
) != NULL_TREE
7349 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7351 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7352 constant_expression_warning (DECL_SIZE (decl
));
7354 cp_error ("storage size of `%D' isn't constant", decl
);
7357 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7358 /* Cleanups for static variables are handled by `finish_file'. */
7359 && ! TREE_STATIC (decl
))
7361 int yes
= suspend_momentary ();
7362 cleanup
= maybe_build_cleanup (decl
);
7363 resume_momentary (yes
);
7366 /* PARM_DECLs get cleanups, too. */
7367 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7370 end_temporary_allocation ();
7371 cleanup
= maybe_build_cleanup (decl
);
7373 resume_temporary_allocation ();
7376 /* Output the assembler code and/or RTL code for variables and functions,
7377 unless the type is an undefined structure or union.
7378 If not, it will get done when the type is completed. */
7380 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7382 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7383 || TREE_CODE (decl
) == RESULT_DECL
)
7385 /* ??? FIXME: What about nested classes? */
7386 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7388 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7389 && allocation_temporary_p ());
7392 end_temporary_allocation ();
7394 /* Static data in a function with comdat linkage also has comdat
7396 if (TREE_CODE (decl
) == VAR_DECL
7397 && TREE_STATIC (decl
)
7398 /* Don't mess with __FUNCTION__. */
7399 && ! TREE_ASM_WRITTEN (decl
)
7400 && current_function_decl
7401 && DECL_CONTEXT (decl
) == current_function_decl
7402 && (DECL_THIS_INLINE (current_function_decl
)
7403 || DECL_TEMPLATE_INSTANTIATION (current_function_decl
))
7404 && TREE_PUBLIC (current_function_decl
))
7406 /* Rather than try to get this right with inlining, we suppress
7407 inlining of such functions. */
7408 current_function_cannot_inline
7409 = "function with static variable cannot be inline";
7411 /* If flag_weak, we don't need to mess with this, as we can just
7412 make the function weak, and let it refer to its unique local
7413 copy. This works because we don't allow the function to be
7417 if (DECL_INTERFACE_KNOWN (current_function_decl
))
7419 TREE_PUBLIC (decl
) = 1;
7420 DECL_EXTERNAL (decl
) = DECL_EXTERNAL (current_function_decl
);
7422 else if (DECL_INITIAL (decl
) == NULL_TREE
7423 || DECL_INITIAL (decl
) == error_mark_node
)
7425 TREE_PUBLIC (decl
) = 1;
7426 DECL_COMMON (decl
) = 1;
7428 /* else we lose. We can only do this if we can use common,
7429 which we can't if it has been initialized. */
7431 if (TREE_PUBLIC (decl
))
7432 DECL_ASSEMBLER_NAME (decl
)
7433 = build_static_name (current_function_decl
, DECL_NAME (decl
));
7434 else if (! DECL_ARTIFICIAL (decl
))
7436 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl
);
7437 cp_warning_at (" you can work around this by removing the initializer"), decl
;
7442 else if (TREE_CODE (decl
) == VAR_DECL
7443 && DECL_LANG_SPECIFIC (decl
)
7444 && DECL_COMDAT (decl
))
7446 /* Dynamically initialized vars go into common. */
7447 if (DECL_INITIAL (decl
) == NULL_TREE
7448 || DECL_INITIAL (decl
) == error_mark_node
)
7449 DECL_COMMON (decl
) = 1;
7450 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7452 DECL_COMMON (decl
) = 1;
7453 DECL_INITIAL (decl
) = error_mark_node
;
7457 /* Statically initialized vars are weak or comdat, if
7460 make_decl_one_only (decl
);
7463 /* We can't do anything useful; leave vars for explicit
7465 DECL_EXTERNAL (decl
) = 1;
7466 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7471 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7472 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7473 else if (TREE_CODE (decl
) == VAR_DECL
7474 && TREE_READONLY (decl
)
7475 && DECL_INITIAL (decl
) != NULL_TREE
7476 && DECL_INITIAL (decl
) != error_mark_node
7477 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7479 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7482 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7485 && TREE_STATIC (decl
)
7486 && ! TREE_SIDE_EFFECTS (decl
)
7487 && ! TREE_PUBLIC (decl
)
7488 && ! DECL_EXTERNAL (decl
)
7489 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7490 && DECL_MODE (decl
) != BLKmode
)
7492 /* If this variable is really a constant, then fill its DECL_RTL
7493 slot with something which won't take up storage.
7494 If something later should take its address, we can always give
7495 it legitimate RTL at that time. */
7496 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7497 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7498 TREE_ASM_WRITTEN (decl
) = 1;
7500 else if (toplev
&& ! TREE_PUBLIC (decl
))
7502 /* If this is a static const, change its apparent linkage
7503 if it belongs to a #pragma interface. */
7504 if (!interface_unknown
)
7506 TREE_PUBLIC (decl
) = 1;
7507 DECL_EXTERNAL (decl
) = interface_only
;
7509 make_decl_rtl (decl
, asmspec
, toplev
);
7512 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7514 else if (TREE_CODE (decl
) == VAR_DECL
7515 && DECL_LANG_SPECIFIC (decl
)
7516 && DECL_IN_AGGR_P (decl
))
7518 if (TREE_STATIC (decl
))
7520 if (init
== NULL_TREE
7521 #ifdef DEFAULT_STATIC_DEFS
7522 /* If this code is dead, then users must
7523 explicitly declare static member variables
7524 outside the class def'n as well. */
7525 && TYPE_NEEDS_CONSTRUCTING (type
)
7529 DECL_EXTERNAL (decl
) = 1;
7530 make_decl_rtl (decl
, asmspec
, 1);
7533 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7536 /* Just a constant field. Should not need any rtl. */
7540 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7543 resume_temporary_allocation ();
7545 if (type
!= error_mark_node
7546 && TYPE_LANG_SPECIFIC (type
)
7547 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7548 abstract_virtuals_error (decl
, type
);
7549 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7550 || TREE_CODE (type
) == METHOD_TYPE
)
7551 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7552 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7553 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7555 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7556 signature_error (decl
, type
);
7557 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7558 || TREE_CODE (type
) == METHOD_TYPE
)
7559 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7560 && IS_SIGNATURE (TREE_TYPE (type
)))
7561 signature_error (decl
, TREE_TYPE (type
));
7563 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7565 else if (DECL_EXTERNAL (decl
)
7566 && ! (DECL_LANG_SPECIFIC (decl
)
7567 && DECL_NOT_REALLY_EXTERN (decl
)))
7570 DECL_INITIAL (decl
) = init
;
7572 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7574 /* Cleanups for static variables are handled by `finish_file'. */
7575 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7576 || TYPE_NEEDS_DESTRUCTOR (type
))
7577 expand_static_init (decl
, init
);
7581 /* This is a declared decl which must live until the
7582 end of the binding contour. It may need a cleanup. */
7584 /* Recompute the RTL of a local array now
7585 if it used to be an incomplete type. */
7586 if (was_incomplete
&& ! TREE_STATIC (decl
))
7588 /* If we used it already as memory, it must stay in memory. */
7589 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7590 /* If it's still incomplete now, no init will save it. */
7591 if (DECL_SIZE (decl
) == NULL_TREE
)
7592 DECL_INITIAL (decl
) = NULL_TREE
;
7595 else if (! TREE_ASM_WRITTEN (decl
)
7596 && (TYPE_SIZE (type
) != NULL_TREE
7597 || TREE_CODE (type
) == ARRAY_TYPE
))
7599 /* Do this here, because we did not expand this decl's
7600 rtl in start_decl. */
7601 if (DECL_RTL (decl
) == NULL_RTX
)
7605 /* XXX: Why don't we use decl here? */
7606 /* Ans: Because it was already expanded? */
7607 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7608 cp_error ("parser lost in parsing declaration of `%D'",
7610 /* Cleanup used up here. */
7611 cleanup
= NULL_TREE
;
7615 if (current_binding_level
->is_for_scope
)
7617 struct binding_level
*outer
= current_binding_level
->level_chain
;
7619 /* Check to see if the same name is already bound at
7620 the outer level, either because it was directly declared,
7621 or because a dead for-decl got preserved. In either case,
7622 the code would not have been valid under the ARM
7623 scope rules, so clear is_for_scope for the
7624 current_binding_level.
7626 Otherwise, we need to preserve the temp slot for decl
7627 to last into the outer binding level. */
7629 int handling_dead_for_vars
= 0;
7630 tree link
= outer
->names
;
7631 for (; ; link
= TREE_CHAIN (link
))
7633 if (link
== NULL
&& handling_dead_for_vars
== 0)
7635 link
= outer
->dead_vars_from_for
;
7636 handling_dead_for_vars
= 1;
7640 if (DECL_IN_MEMORY_P (decl
))
7641 preserve_temp_slots (DECL_RTL (decl
));
7644 if (DECL_NAME (link
) == DECL_NAME (decl
))
7646 if (handling_dead_for_vars
)
7649 = purpose_member (DECL_NAME (decl
),
7650 current_binding_level
->shadowed
);
7651 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7652 TREE_VALUE (shadowing
)
7653 = DECL_SHADOWED_FOR_VAR (link
);
7655 current_binding_level
->is_for_scope
= 0;
7661 expand_start_target_temps ();
7663 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7665 /* Compute and store the initial value. */
7666 expand_decl_init (decl
);
7667 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7669 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7671 emit_line_note (DECL_SOURCE_FILE (decl
),
7672 DECL_SOURCE_LINE (decl
));
7673 expand_aggr_init (decl
, init
, flags
);
7676 /* Set this to 0 so we can tell whether an aggregate which
7677 was initialized was ever used. Don't do this if it has a
7678 destructor, so we don't complain about the 'resource
7679 allocation is initialization' idiom. */
7680 /* Now set attribute((unused)) on types so decls of
7681 that type will be marked used. (see TREE_USED, above.)
7682 This avoids the warning problems this particular code
7683 tried to work around. */
7685 if (TYPE_NEEDS_CONSTRUCTING (type
)
7687 && cleanup
== NULL_TREE
7688 && DECL_NAME (decl
))
7689 TREE_USED (decl
) = 0;
7692 TREE_USED (decl
) = 1;
7695 /* Cleanup any temporaries needed for the initial value. */
7696 expand_end_target_temps ();
7698 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7700 /* Store the cleanup, if there was one. */
7703 if (! expand_decl_cleanup (decl
, cleanup
))
7704 cp_error ("parser lost in parsing declaration of `%D'",
7711 /* Undo call to `pushclass' that was done in `start_decl'
7712 due to initialization of qualified member variable.
7713 I.e., Foo::x = 10; */
7715 tree context
= DECL_REAL_CONTEXT (decl
);
7717 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7718 && (TREE_CODE (decl
) == VAR_DECL
7719 /* We also have a pushclass done that we need to undo here
7720 if we're at top level and declare a method. */
7721 || TREE_CODE (decl
) == FUNCTION_DECL
)
7722 /* If size hasn't been set, we're still defining it,
7723 and therefore inside the class body; don't pop
7724 the binding level.. */
7725 && TYPE_SIZE (context
) != NULL_TREE
7726 && context
== current_class_type
)
7733 /* If requested, warn about definitions of large data objects. */
7735 if (warn_larger_than
7736 && ! processing_template_decl
7737 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7738 && !DECL_EXTERNAL (decl
))
7740 register tree decl_size
= DECL_SIZE (decl
);
7742 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7744 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7746 if (units
> larger_than_size
)
7747 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7753 /* Resume permanent allocation, if not within a function. */
7754 /* The corresponding push_obstacks_nochange is in start_decl,
7755 start_method, groktypename, and in grokfield. */
7760 TREE_READONLY (decl
) = 1;
7763 /* This is here for a midend callback from c-common.c */
7766 finish_decl (decl
, init
, asmspec_tree
)
7770 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7774 expand_static_init (decl
, init
)
7778 tree oldstatic
= value_member (decl
, static_aggregates
);
7782 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7783 cp_error ("multiple initializations given for `%D'", decl
);
7785 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7787 /* Emit code to perform this initialization but once. */
7790 /* Remember this information until end of file. */
7791 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7793 /* Emit code to perform this initialization but once. */
7794 temp
= get_temp_name (integer_type_node
, 1);
7795 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7796 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7797 integer_zero_node
, 1), 0);
7798 expand_start_target_temps ();
7800 expand_assignment (temp
, integer_one_node
, 0, 0);
7801 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7802 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7804 expand_aggr_init (decl
, init
, 0);
7805 do_pending_stack_adjust ();
7808 expand_assignment (decl
, init
, 0, 0);
7810 /* Cleanup any temporaries needed for the initial value. */
7811 expand_end_target_temps ();
7813 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7815 tree cleanup
, fcall
;
7816 static tree Atexit
= 0;
7819 tree atexit_fndecl
, PFV
, pfvlist
;
7820 /* Remember this information until end of file. */
7821 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7822 PFV
= build_pointer_type (build_function_type
7823 (void_type_node
, void_list_node
));
7825 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7827 push_lang_context (lang_name_c
);
7829 = builtin_function ("atexit",
7830 build_function_type (void_type_node
,
7832 NOT_BUILT_IN
, NULL_PTR
);
7833 assemble_external (atexit_fndecl
);
7834 Atexit
= default_conversion (atexit_fndecl
);
7835 pop_lang_context ();
7839 /* Call build_cleanup before we enter the anonymous function
7840 so that any access checks will be done relative to the
7841 current scope, rather than the scope of the anonymous
7843 fcall
= build_cleanup (decl
);
7844 cleanup
= start_anon_func ();
7845 expand_expr_stmt (fcall
);
7847 mark_addressable (cleanup
);
7848 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7849 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7850 expand_expr_stmt (fcall
);
7854 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7856 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7857 TREE_STATIC (static_aggregates
) = 1;
7860 /* Resume old (possibly temporary) allocation. */
7865 /* This code takes into account memory allocation
7866 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7867 does not hold for this object, then we must make permanent
7868 the storage currently in the temporary obstack. */
7869 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7870 preserve_initializer ();
7871 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7875 /* Make TYPE a complete type based on INITIAL_VALUE.
7876 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7877 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7880 complete_array_type (type
, initial_value
, do_default
)
7881 tree type
, initial_value
;
7884 register tree maxindex
= NULL_TREE
;
7889 /* Note MAXINDEX is really the maximum index,
7890 one less than the size. */
7891 if (TREE_CODE (initial_value
) == STRING_CST
)
7894 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7895 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7898 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7900 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7901 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7902 for (; elts
; elts
= TREE_CHAIN (elts
))
7904 if (TREE_PURPOSE (elts
))
7905 maxindex
= TREE_PURPOSE (elts
);
7907 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7909 maxindex
= copy_node (maxindex
);
7913 /* Make an error message unless that happened already. */
7914 if (initial_value
!= error_mark_node
)
7917 /* Prevent further error messages. */
7918 maxindex
= build_int_2 (0, 0);
7925 maxindex
= build_int_2 (0, 0);
7933 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7934 if (! TREE_TYPE (maxindex
))
7935 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7937 itype
= TREE_TYPE (initial_value
);
7940 if (itype
&& !TYPE_DOMAIN (itype
))
7941 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7942 /* The type of the main variant should never be used for arrays
7943 of different sizes. It should only ever be completed with the
7944 size of the array. */
7945 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7946 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7949 /* Lay out the type now that we can get the real answer. */
7956 /* Return zero if something is declared to be a member of type
7957 CTYPE when in the context of CUR_TYPE. STRING is the error
7958 message to print in that case. Otherwise, quietly return 1. */
7961 member_function_or_else (ctype
, cur_type
, string
)
7962 tree ctype
, cur_type
;
7965 if (ctype
&& ctype
!= cur_type
)
7967 error (string
, TYPE_NAME_STRING (ctype
));
7973 /* Subroutine of `grokdeclarator'. */
7975 /* Generate errors possibly applicable for a given set of specifiers.
7976 This is for ARM $7.1.2. */
7979 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7982 int virtualp
, quals
, friendp
, raises
, inlinep
;
7985 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7987 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7989 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7992 cp_error_at ("invalid friend declaration", object
);
7994 cp_error_at ("invalid exception specifications", object
);
7997 /* CTYPE is class type, or null if non-class.
7998 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
8000 DECLARATOR is the function's name.
8001 VIRTUALP is truthvalue of whether the function is virtual or not.
8002 FLAGS are to be passed through to `grokclassfn'.
8003 QUALS are qualifiers indicating whether the function is `const'
8005 RAISES is a list of exceptions that this function can raise.
8006 CHECK is 1 if we must find this method in CTYPE, 0 if we should
8007 not look, and -1 if we should not call `grokclassfn' at all.
8009 Returns `error_mark_node' if something goes wrong, after issuing
8010 applicable error messages. */
8013 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
8014 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
8015 template_count
, in_namespace
)
8018 tree orig_declarator
;
8020 enum overload_flags flags
;
8021 tree quals
, raises
, attrlist
;
8022 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
8026 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
8030 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
8031 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
8037 type
= build_exception_variant (type
, raises
);
8040 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
8041 /* Propagate volatile out from type to decl. */
8042 if (TYPE_VOLATILE (type
))
8043 TREE_THIS_VOLATILE (decl
) = 1;
8045 /* This decl is not from the current namespace. */
8047 set_decl_namespace (decl
, in_namespace
);
8049 /* `main' and builtins have implicit 'C' linkage. */
8050 if ((MAIN_NAME_P (declarator
)
8051 || (IDENTIFIER_LENGTH (declarator
) > 10
8052 && IDENTIFIER_POINTER (declarator
)[0] == '_'
8053 && IDENTIFIER_POINTER (declarator
)[1] == '_'
8054 && strncmp (IDENTIFIER_POINTER (declarator
)+2, "builtin_", 8) == 0))
8055 && current_lang_name
== lang_name_cplusplus
8056 /* context == 0 could mean global scope or not set yet; either is fine
8057 for us here, as we check current_namespace. */
8058 && DECL_CONTEXT (decl
) == NULL_TREE
8059 && ctype
== NULL_TREE
8060 && current_namespace
== global_namespace
)
8061 DECL_LANGUAGE (decl
) = lang_c
;
8063 /* Should probably propagate const out from type to decl I bet (mrs). */
8066 DECL_STATIC_FUNCTION_P (decl
) = 1;
8067 DECL_CONTEXT (decl
) = ctype
;
8071 DECL_CLASS_CONTEXT (decl
) = ctype
;
8073 if (ctype
== NULL_TREE
&& DECL_MAIN_P (decl
))
8076 error ("cannot declare `main' to be inline");
8078 error ("cannot declare `main' to be static");
8083 /* Members of anonymous types have no linkage; make them internal. */
8084 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
8089 /* [basic.link]: A name with no linkage (notably, the name of a class
8090 or enumeration declared in a local scope) shall not be used to
8091 declare an entity with linkage.
8093 Only check this for public decls for now. */
8094 t
= no_linkage_check (TREE_TYPE (decl
));
8097 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8099 if (DECL_LANGUAGE (decl
) == lang_c
)
8100 /* Allow this; it's pretty common in C. */;
8102 cp_pedwarn ("non-local function `%#D' uses anonymous type",
8106 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
8111 TREE_PUBLIC (decl
) = publicp
;
8114 DECL_INTERFACE_KNOWN (decl
) = 1;
8115 DECL_NOT_REALLY_EXTERN (decl
) = 1;
8119 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
8121 DECL_EXTERNAL (decl
) = 1;
8122 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
8124 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
8125 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
8129 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
8130 grok_op_properties (decl
, virtualp
, check
< 0);
8132 if (ctype
&& hack_decl_function_context (decl
))
8133 DECL_NO_STATIC_CHAIN (decl
) = 1;
8135 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
8136 if (TREE_PURPOSE (t
)
8137 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
8139 add_defarg_fn (decl
);
8144 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
8148 ("defining explicit specialization `%D' in friend declaration",
8152 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
8154 /* Something like `template <class T> friend void f<T>()'. */
8155 cp_error ("template-id `%D' in declaration of primary template",
8157 return error_mark_node
;
8160 /* A friend declaration of the form friend void f<>(). Record
8161 the information in the TEMPLATE_ID_EXPR. */
8162 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
8163 DECL_TEMPLATE_INFO (decl
)
8164 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
8165 TREE_OPERAND (orig_declarator
, 1),
8170 /* Plain overloading: will not be grok'd by grokclassfn. */
8171 if (! ctype
&& ! processing_template_decl
8172 && DECL_LANGUAGE (decl
) != lang_c
8173 && (! DECL_USE_TEMPLATE (decl
) || name_mangling_version
< 1))
8174 set_mangled_name_for_decl (decl
);
8176 /* Caller will do the rest of this. */
8180 if (check
&& funcdef_flag
)
8181 DECL_INITIAL (decl
) = error_mark_node
;
8183 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
8186 /* Just handle constructors here. We could do this
8187 inside the following if stmt, but I think
8188 that the code is more legible by breaking this
8189 case out. See comments below for what each of
8190 the following calls is supposed to do. */
8191 DECL_CONSTRUCTOR_P (decl
) = 1;
8193 grokclassfn (ctype
, decl
, flags
, quals
);
8195 decl
= check_explicit_specialization (orig_declarator
, decl
,
8197 2 * (funcdef_flag
!= 0) +
8198 4 * (friendp
!= 0));
8199 if (decl
== error_mark_node
)
8200 return error_mark_node
;
8202 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8205 tmp
= check_classfn (ctype
, decl
);
8207 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8208 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8210 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8211 cp_error ("definition of implicitly-declared `%D'", tmp
);
8212 if (tmp
&& duplicate_decls (decl
, tmp
))
8215 if (! grok_ctor_properties (ctype
, decl
))
8216 return error_mark_node
;
8222 /* Function gets the ugly name, field gets the nice one.
8223 This call may change the type of the function (because
8224 of default parameters)! */
8225 if (ctype
!= NULL_TREE
)
8226 grokclassfn (ctype
, decl
, flags
, quals
);
8228 decl
= check_explicit_specialization (orig_declarator
, decl
,
8230 2 * (funcdef_flag
!= 0) +
8231 4 * (friendp
!= 0));
8232 if (decl
== error_mark_node
)
8233 return error_mark_node
;
8235 if (ctype
!= NULL_TREE
8236 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
8239 tmp
= check_classfn (ctype
, decl
);
8241 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8242 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8244 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8245 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8247 /* Remove the `this' parm added by grokclassfn.
8248 XXX Isn't this done in start_function, too? */
8249 revert_static_member_fn (&decl
, NULL
, NULL
);
8250 last_function_parms
= TREE_CHAIN (last_function_parms
);
8252 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8253 cp_error ("definition of implicitly-declared `%D'", tmp
);
8256 if (!duplicate_decls (decl
, tmp
))
8257 my_friendly_abort (892);
8262 if (ctype
== NULL_TREE
|| check
)
8266 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8267 TREE_VALUE (attrlist
));
8268 make_decl_rtl (decl
, NULL_PTR
, 1);
8272 DECL_VIRTUAL_P (decl
) = 1;
8273 if (DECL_VINDEX (decl
) == NULL_TREE
)
8274 DECL_VINDEX (decl
) = error_mark_node
;
8275 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8282 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8285 RID_BIT_TYPE
*specbits_in
;
8291 RID_BIT_TYPE specbits
;
8293 specbits
= *specbits_in
;
8295 if (TREE_CODE (type
) == OFFSET_TYPE
)
8297 /* If you declare a static member so that it
8298 can be initialized, the code will reach here. */
8299 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8300 type
= TREE_TYPE (type
);
8301 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8302 DECL_CONTEXT (decl
) = basetype
;
8303 DECL_CLASS_CONTEXT (decl
) = basetype
;
8304 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8308 tree context
= in_namespace
? in_namespace
: current_namespace
;
8309 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8310 if (declarator
&& context
!= global_namespace
&& namespace_bindings_p ()
8311 && current_lang_name
!= lang_name_c
)
8312 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8317 set_decl_namespace (decl
, in_namespace
);
8319 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8321 DECL_THIS_EXTERN (decl
) = 1;
8322 DECL_EXTERNAL (decl
) = !initialized
;
8325 /* In class context, static means one per class,
8326 public access, and static storage. */
8327 if (DECL_CLASS_SCOPE_P (decl
))
8329 TREE_PUBLIC (decl
) = 1;
8330 TREE_STATIC (decl
) = 1;
8331 DECL_EXTERNAL (decl
) = 0;
8333 /* At top level, either `static' or no s.c. makes a definition
8334 (perhaps tentative), and absence of `static' makes it public. */
8335 else if (toplevel_bindings_p ())
8337 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8338 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8339 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8341 /* Not at top level, only `static' makes a static definition. */
8344 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8345 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8348 if (TREE_PUBLIC (decl
))
8350 /* [basic.link]: A name with no linkage (notably, the name of a class
8351 or enumeration declared in a local scope) shall not be used to
8352 declare an entity with linkage.
8354 Only check this for public decls for now. */
8355 tree t
= no_linkage_check (TREE_TYPE (decl
));
8358 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8359 /* Ignore for now; `enum { foo } e' is pretty common. */;
8361 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8369 /* Create a canonical pointer to member function type. */
8372 build_ptrmemfunc_type (type
)
8379 /* If a canonical type already exists for this type, use it. We use
8380 this method instead of type_hash_canon, because it only does a
8381 simple equality check on the list of field members. */
8383 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8386 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8388 u
= make_lang_type (UNION_TYPE
);
8389 IS_AGGR_TYPE (u
) = 0;
8390 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8391 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8393 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8394 TYPE_NAME (u
) = NULL_TREE
;
8396 t
= make_lang_type (RECORD_TYPE
);
8398 /* Let the front-end know this is a pointer to member function... */
8399 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8400 /* ... and not really an aggregate. */
8401 IS_AGGR_TYPE (t
) = 0;
8403 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8405 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8407 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8408 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8412 /* Zap out the name so that the back-end will give us the debugging
8413 information for this anonymous RECORD_TYPE. */
8414 TYPE_NAME (t
) = NULL_TREE
;
8416 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8418 /* Seems to be wanted. */
8419 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8423 /* Given declspecs and a declarator,
8424 determine the name and type of the object declared
8425 and construct a ..._DECL node for it.
8426 (In one case we can return a ..._TYPE node instead.
8427 For invalid input we sometimes return 0.)
8429 DECLSPECS is a chain of tree_list nodes whose value fields
8430 are the storage classes and type specifiers.
8432 DECL_CONTEXT says which syntactic context this declaration is in:
8433 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8434 FUNCDEF for a function definition. Like NORMAL but a few different
8435 error messages in each case. Return value may be zero meaning
8436 this definition is too screwy to try to parse.
8437 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8438 handle member functions (which have FIELD context).
8439 Return value may be zero meaning this definition is too screwy to
8441 PARM for a parameter declaration (either within a function prototype
8442 or before a function body). Make a PARM_DECL, or return void_type_node.
8443 CATCHPARM for a parameter declaration before a catch clause.
8444 TYPENAME if for a typename (in a cast or sizeof).
8445 Don't make a DECL node; just return the ..._TYPE node.
8446 FIELD for a struct or union field; make a FIELD_DECL.
8447 BITFIELD for a field with specified width.
8448 INITIALIZED is 1 if the decl has an initializer.
8450 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8451 It may also be so in the PARM case, for a prototype where the
8452 argument type is specified but not the name.
8454 This function is where the complicated C meanings of `static'
8455 and `extern' are interpreted.
8457 For C++, if there is any monkey business to do, the function which
8458 calls this one must do it, i.e., prepending instance variables,
8459 renaming overloaded function names, etc.
8461 Note that for this C++, it is an error to define a method within a class
8462 which does not belong to that class.
8464 Except in the case where SCOPE_REFs are implicitly known (such as
8465 methods within a class being redundantly qualified),
8466 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8467 (class_name::decl_name). The caller must also deal with this.
8469 If a constructor or destructor is seen, and the context is FIELD,
8470 then the type gains the attribute TREE_HAS_x. If such a declaration
8471 is erroneous, NULL_TREE is returned.
8473 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8474 function, these are the qualifiers to give to the `this' pointer.
8476 May return void_type_node if the declarator turned out to be a friend.
8477 See grokfield for details. */
8479 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8482 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8485 enum decl_context decl_context
;
8489 RID_BIT_TYPE specbits
;
8492 tree type
= NULL_TREE
;
8496 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8497 int explicit_int
= 0;
8498 int explicit_char
= 0;
8499 int defaulted_int
= 0;
8500 int opaque_typedef
= 0;
8501 tree typedef_decl
= NULL_TREE
;
8503 tree typedef_type
= NULL_TREE
;
8504 int funcdef_flag
= 0;
8505 enum tree_code innermost_code
= ERROR_MARK
;
8508 /* See the code below that used this. */
8509 tree decl_machine_attr
= NULL_TREE
;
8511 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8512 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8513 tree init
= NULL_TREE
;
8515 /* Keep track of what sort of function is being processed
8516 so that we can warn about default return values, or explicit
8517 return values which do not match prescribed defaults. */
8518 enum return_types return_type
= return_normal
;
8520 tree dname
= NULL_TREE
;
8521 tree ctype
= current_class_type
;
8522 tree ctor_return_type
= NULL_TREE
;
8523 enum overload_flags flags
= NO_SPECIAL
;
8524 tree quals
= NULL_TREE
;
8525 tree raises
= NULL_TREE
;
8526 int template_count
= 0;
8527 tree in_namespace
= NULL_TREE
;
8529 RIDBIT_RESET_ALL (specbits
);
8530 if (decl_context
== FUNCDEF
)
8531 funcdef_flag
= 1, decl_context
= NORMAL
;
8532 else if (decl_context
== MEMFUNCDEF
)
8533 funcdef_flag
= -1, decl_context
= FIELD
;
8534 else if (decl_context
== BITFIELD
)
8535 bitfield
= 1, decl_context
= FIELD
;
8537 /* Look inside a declarator for the name being declared
8538 and get it as a string, for an error message. */
8540 tree
*next
= &declarator
;
8544 while (next
&& *next
)
8547 switch (TREE_CODE (decl
))
8551 next
= &TREE_OPERAND (decl
, 0);
8554 case BIT_NOT_EXPR
: /* For C++ destructors! */
8556 tree name
= TREE_OPERAND (decl
, 0);
8557 tree rename
= NULL_TREE
;
8559 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8561 return_type
= return_dtor
;
8562 if (TREE_CODE (name
) == TYPE_DECL
)
8563 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8564 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8565 if (ctype
== NULL_TREE
)
8567 if (current_class_type
== NULL_TREE
)
8569 error ("destructors must be member functions");
8574 tree t
= constructor_name (current_class_name
);
8581 tree t
= constructor_name (ctype
);
8588 cp_error ("destructor `%T' must match class name `%T'",
8590 TREE_OPERAND (decl
, 0) = rename
;
8596 case ADDR_EXPR
: /* C++ reference declaration */
8601 innermost_code
= TREE_CODE (decl
);
8602 next
= &TREE_OPERAND (decl
, 0);
8606 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8608 /* This is actually a variable declaration using constructor
8609 syntax. We need to call start_decl and cp_finish_decl so we
8610 can get the variable initialized... */
8612 *next
= TREE_OPERAND (decl
, 0);
8613 init
= TREE_OPERAND (decl
, 1);
8615 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8616 /* Look for __unused__ attribute */
8617 if (TREE_USED (TREE_TYPE (decl
)))
8618 TREE_USED (decl
) = 1;
8619 finish_decl (decl
, init
, NULL_TREE
);
8622 innermost_code
= TREE_CODE (decl
);
8623 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8624 ctype
= current_class_type
;
8626 && TREE_OPERAND (decl
, 0)
8627 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8628 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8629 == constructor_name_full (ctype
))
8630 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8631 == constructor_name (ctype
)))))
8632 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8633 next
= &TREE_OPERAND (decl
, 0);
8635 if (ctype
!= NULL_TREE
8636 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8637 && decl
== constructor_name (ctype
))
8639 return_type
= return_ctor
;
8640 ctor_return_type
= ctype
;
8645 case TEMPLATE_ID_EXPR
:
8647 tree fns
= TREE_OPERAND (decl
, 0);
8649 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8650 fns
= TREE_OPERAND (fns
, 0);
8652 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8654 else if (is_overloaded_fn (fns
))
8655 dname
= DECL_NAME (get_first_fn (fns
));
8657 my_friendly_abort (0);
8661 case IDENTIFIER_NODE
:
8662 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8669 cp_error ("declarator-id missing; using reserved word `%D'",
8671 name
= IDENTIFIER_POINTER (dname
);
8673 if (! IDENTIFIER_OPNAME_P (dname
)
8674 /* GNU/Linux headers use '__op'. Arrgh. */
8675 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8676 name
= IDENTIFIER_POINTER (dname
);
8679 if (IDENTIFIER_TYPENAME_P (dname
))
8681 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8682 flags
= TYPENAME_FLAG
;
8683 ctor_return_type
= TREE_TYPE (dname
);
8684 return_type
= return_conversion
;
8686 name
= operator_name_string (dname
);
8693 /* Perform error checking, and decide on a ctype. */
8694 tree cname
= TREE_OPERAND (decl
, 0);
8695 if (cname
== NULL_TREE
)
8697 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8700 in_namespace
= TREE_OPERAND (decl
, 0);
8701 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8703 else if (! is_aggr_type (cname
, 1))
8704 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8705 /* Must test TREE_OPERAND (decl, 1), in case user gives
8706 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8707 else if (TREE_OPERAND (decl
, 1)
8708 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8710 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8711 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8713 cp_error ("`%T::%D' is not a valid declarator", cname
,
8714 TREE_OPERAND (decl
, 1));
8715 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8716 cname
, TREE_OPERAND (decl
, 1));
8717 return void_type_node
;
8719 else if (ctype
== NULL_TREE
)
8721 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8722 TREE_OPERAND (decl
, 0) = ctype
;
8725 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8727 cp_error ("type `%T' is not derived from type `%T'",
8729 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8735 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8736 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8737 == constructor_name_full (ctype
))
8738 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8739 == constructor_name (ctype
))))
8740 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8741 next
= &TREE_OPERAND (decl
, 1);
8745 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8746 && constructor_name (ctype
) == decl
)
8748 return_type
= return_ctor
;
8749 ctor_return_type
= ctype
;
8751 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8752 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8753 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8754 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8756 return_type
= return_dtor
;
8757 ctor_return_type
= ctype
;
8759 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8760 next
= &TREE_OPERAND (decl
, 0);
8771 /* Parse error puts this typespec where
8772 a declarator should go. */
8773 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8774 if (TREE_TYPE (decl
) == current_class_type
)
8775 cp_error (" perhaps you want `%T' for a constructor",
8776 current_class_name
);
8777 dname
= DECL_NAME (decl
);
8778 name
= IDENTIFIER_POINTER (dname
);
8780 /* Avoid giving two errors for this. */
8781 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8783 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8790 cp_compiler_error ("`%D' as declarator", decl
);
8791 return 0; /* We used to do a 155 abort here. */
8798 /* A function definition's declarator must have the form of
8799 a function declarator. */
8801 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8804 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8805 && innermost_code
!= CALL_EXPR
8806 && ! (ctype
&& declspecs
== NULL_TREE
))
8808 cp_error ("declaration of `%D' as non-function", dname
);
8809 return void_type_node
;
8812 /* Anything declared one level down from the top level
8813 must be one of the parameters of a function
8814 (because the body is at least two levels down). */
8816 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8817 by not allowing C++ class definitions to specify their parameters
8818 with xdecls (must be spec.d in the parmlist).
8820 Since we now wait to push a class scope until we are sure that
8821 we are in a legitimate method context, we must set oldcname
8822 explicitly (since current_class_name is not yet alive).
8824 We also want to avoid calling this a PARM if it is in a namespace. */
8826 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8827 && ! pseudo_global_level_p ())
8829 struct binding_level
*b
= current_binding_level
;
8830 current_binding_level
= b
->level_chain
;
8831 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8832 decl_context
= PARM
;
8833 current_binding_level
= b
;
8836 /* Look through the decl specs and record which ones appear.
8837 Some typespecs are defined as built-in typenames.
8838 Others, the ones that are modifiers of other types,
8839 are represented by bits in SPECBITS: set the bits for
8840 the modifiers that appear. Storage class keywords are also in SPECBITS.
8842 If there is a typedef name or a type, store the type in TYPE.
8843 This includes builtin typedefs such as `int'.
8845 Set EXPLICIT_INT if the type is `int' or `char' and did not
8846 come from a user typedef.
8848 Set LONGLONG if `long' is mentioned twice.
8850 For C++, constructors and destructors have their own fast treatment. */
8852 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8857 /* Certain parse errors slip through. For example,
8858 `int class;' is not caught by the parser. Try
8859 weakly to recover here. */
8860 if (TREE_CODE (spec
) != TREE_LIST
)
8863 id
= TREE_VALUE (spec
);
8865 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8867 if (id
== ridpointers
[(int) RID_INT
]
8868 || id
== ridpointers
[(int) RID_CHAR
]
8869 || id
== ridpointers
[(int) RID_BOOL
]
8870 || id
== ridpointers
[(int) RID_WCHAR
])
8874 if (id
== ridpointers
[(int) RID_BOOL
])
8875 error ("`bool' is now a keyword");
8877 cp_error ("extraneous `%T' ignored", id
);
8881 if (id
== ridpointers
[(int) RID_INT
])
8883 else if (id
== ridpointers
[(int) RID_CHAR
])
8885 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8889 /* C++ aggregate types. */
8890 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8893 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8895 type
= IDENTIFIER_TYPE_VALUE (id
);
8899 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8901 if (ridpointers
[i
] == id
)
8903 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8905 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8906 pedwarn ("ANSI C++ does not support `long long'");
8908 error ("`long long long' is too long for GCC");
8912 else if (RIDBIT_SETP (i
, specbits
))
8913 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8914 RIDBIT_SET (i
, specbits
);
8919 /* C++ aggregate types. */
8920 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8923 cp_error ("multiple declarations `%T' and `%T'", type
,
8927 type
= TREE_TYPE (id
);
8928 TREE_VALUE (spec
) = type
;
8933 error ("two or more data types in declaration of `%s'", name
);
8934 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8936 register tree t
= lookup_name (id
, 1);
8937 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8938 error ("`%s' fails to be a typedef or built in type",
8939 IDENTIFIER_POINTER (id
));
8942 type
= TREE_TYPE (t
);
8944 /* See the code below that used this. */
8945 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8950 else if (id
!= error_mark_node
)
8951 /* Can't change CLASS nodes into RECORD nodes here! */
8957 typedef_type
= type
;
8959 /* No type at all: default to `int', and set DEFAULTED_INT
8960 because it was not a user-defined typedef.
8961 Except when we have a `typedef' inside a signature, in
8962 which case the type defaults to `unknown type' and is
8963 instantiated when assigning to a signature pointer or ref. */
8965 if (type
== NULL_TREE
8966 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8967 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8968 || RIDBIT_SETP (RID_LONG
, specbits
)
8969 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8971 /* These imply 'int'. */
8972 type
= integer_type_node
;
8976 if (type
== NULL_TREE
)
8979 if (return_type
== return_dtor
)
8980 type
= void_type_node
;
8981 else if (return_type
== return_ctor
)
8982 type
= build_pointer_type (ctor_return_type
);
8983 else if (return_type
== return_conversion
)
8984 type
= ctor_return_type
;
8985 else if (current_class_type
8986 && IS_SIGNATURE (current_class_type
)
8987 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8988 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8992 type
= copy_node (opaque_type_node
);
8998 if (warn_return_type
8999 && return_type
== return_normal
)
9000 /* Save warning until we know what is really going on. */
9001 warn_about_return_type
= 1;
9003 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9004 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
9005 else if (innermost_code
!= CALL_EXPR
|| pedantic
9006 || (warn_return_type
&& return_type
== return_normal
))
9008 if (innermost_code
== CALL_EXPR
)
9009 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
9011 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
9014 type
= integer_type_node
;
9017 else if (return_type
== return_dtor
)
9019 error ("return type specification for destructor invalid");
9020 type
= void_type_node
;
9022 else if (return_type
== return_ctor
)
9024 error ("return type specification for constructor invalid");
9025 type
= build_pointer_type (ctor_return_type
);
9027 else if (return_type
== return_conversion
)
9029 if (comptypes (type
, ctor_return_type
, 1) == 0)
9030 cp_error ("operator `%T' declared to return `%T'",
9031 ctor_return_type
, type
);
9033 cp_pedwarn ("return type specified for `operator %T'",
9036 type
= ctor_return_type
;
9041 /* Now process the modifiers that were specified
9042 and check for invalid combinations. */
9044 /* Long double is a special combination. */
9046 if (RIDBIT_SETP (RID_LONG
, specbits
)
9047 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
9049 RIDBIT_RESET (RID_LONG
, specbits
);
9050 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
9051 TYPE_VOLATILE (type
));
9054 /* Check all other uses of type modifiers. */
9056 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
9057 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9058 || RIDBIT_SETP (RID_LONG
, specbits
)
9059 || RIDBIT_SETP (RID_SHORT
, specbits
))
9063 if (TREE_CODE (type
) == REAL_TYPE
)
9064 error ("short, signed or unsigned invalid for `%s'", name
);
9065 else if (TREE_CODE (type
) != INTEGER_TYPE
)
9066 error ("long, short, signed or unsigned invalid for `%s'", name
);
9067 else if (RIDBIT_SETP (RID_LONG
, specbits
)
9068 && RIDBIT_SETP (RID_SHORT
, specbits
))
9069 error ("long and short specified together for `%s'", name
);
9070 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
9071 || RIDBIT_SETP (RID_SHORT
, specbits
))
9073 error ("long or short specified with char for `%s'", name
);
9074 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
9075 || RIDBIT_SETP (RID_SHORT
, specbits
))
9076 && TREE_CODE (type
) == REAL_TYPE
)
9077 error ("long or short specified with floating type for `%s'", name
);
9078 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9079 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
9080 error ("signed and unsigned given together for `%s'", name
);
9084 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
9086 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
9088 if (flag_pedantic_errors
)
9093 /* Discard the type modifiers if they are invalid. */
9096 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
9097 RIDBIT_RESET (RID_SIGNED
, specbits
);
9098 RIDBIT_RESET (RID_LONG
, specbits
);
9099 RIDBIT_RESET (RID_SHORT
, specbits
);
9104 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
9105 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
9107 error ("complex invalid for `%s'", name
);
9108 RIDBIT_RESET (RID_COMPLEX
, specbits
);
9111 /* Decide whether an integer type is signed or not.
9112 Optionally treat bitfields as signed by default. */
9113 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
9114 || (bitfield
&& ! flag_signed_bitfields
9115 && (explicit_int
|| defaulted_int
|| explicit_char
9116 /* A typedef for plain `int' without `signed'
9117 can be controlled just like plain `int'. */
9118 || ! (typedef_decl
!= NULL_TREE
9119 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
9120 && TREE_CODE (type
) != ENUMERAL_TYPE
9121 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
9124 type
= long_long_unsigned_type_node
;
9125 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9126 type
= long_unsigned_type_node
;
9127 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9128 type
= short_unsigned_type_node
;
9129 else if (type
== char_type_node
)
9130 type
= unsigned_char_type_node
;
9131 else if (typedef_decl
)
9132 type
= unsigned_type (type
);
9134 type
= unsigned_type_node
;
9136 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9137 && type
== char_type_node
)
9138 type
= signed_char_type_node
;
9140 type
= long_long_integer_type_node
;
9141 else if (RIDBIT_SETP (RID_LONG
, specbits
))
9142 type
= long_integer_type_node
;
9143 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
9144 type
= short_integer_type_node
;
9146 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
9148 /* If we just have "complex", it is equivalent to
9149 "complex double", but if any modifiers at all are specified it is
9150 the complex form of TYPE. E.g, "complex short" is
9151 "complex short int". */
9153 if (defaulted_int
&& ! longlong
9154 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
9155 || RIDBIT_SETP (RID_SHORT
, specbits
)
9156 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9157 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
9158 type
= complex_double_type_node
;
9159 else if (type
== integer_type_node
)
9160 type
= complex_integer_type_node
;
9161 else if (type
== float_type_node
)
9162 type
= complex_float_type_node
;
9163 else if (type
== double_type_node
)
9164 type
= complex_double_type_node
;
9165 else if (type
== long_double_type_node
)
9166 type
= complex_long_double_type_node
;
9168 type
= build_complex_type (type
);
9171 if (return_type
== return_conversion
9172 && (RIDBIT_SETP (RID_CONST
, specbits
)
9173 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9174 cp_error ("`operator %T' cannot be cv-qualified",
9177 /* Set CONSTP if this declaration is `const', whether by
9178 explicit specification or via a typedef.
9179 Likewise for VOLATILEP. */
9181 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9182 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9183 type
= cp_build_type_variant (type
, constp
, volatilep
);
9185 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9186 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9187 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9188 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9189 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9191 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9192 staticp
= 1 + (decl_context
== FIELD
);
9194 if (virtualp
&& staticp
== 2)
9196 cp_error ("member `%D' cannot be declared both virtual and static",
9200 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9201 RIDBIT_RESET (RID_FRIEND
, specbits
);
9203 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9205 if (decl_context
== PARM
)
9207 error ("non-member `%s' cannot be declared `mutable'", name
);
9208 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9210 else if (friendp
|| decl_context
== TYPENAME
)
9212 error ("non-object member `%s' cannot be declared `mutable'", name
);
9213 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9217 /* Warn if two storage classes are given. Default to `auto'. */
9219 if (RIDBIT_ANY_SET (specbits
))
9221 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9222 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9223 if (decl_context
== PARM
&& nclasses
> 0)
9224 error ("storage class specifiers invalid in parameter declarations");
9225 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9227 if (decl_context
== PARM
)
9228 error ("typedef declaration invalid in parameter declaration");
9231 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9232 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9235 /* Give error if `virtual' is used outside of class declaration. */
9237 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9239 error ("virtual outside class declaration");
9242 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9244 error ("only members can be declared mutable");
9245 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9248 /* Static anonymous unions are dealt with here. */
9249 if (staticp
&& decl_context
== TYPENAME
9250 && TREE_CODE (declspecs
) == TREE_LIST
9251 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9252 decl_context
= FIELD
;
9254 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9255 is used in a signature member function declaration. */
9256 if (decl_context
== FIELD
9257 && IS_SIGNATURE (current_class_type
)
9258 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9262 error ("`const' specified for signature member function `%s'", name
);
9267 error ("`volatile' specified for signature member function `%s'",
9273 error ("`inline' specified for signature member function `%s'", name
);
9274 /* Later, we'll make signature member functions inline. */
9279 error ("`friend' declaration in signature definition");
9284 error ("`virtual' specified for signature member function `%s'",
9286 /* Later, we'll make signature member functions virtual. */
9291 /* Warn about storage classes that are invalid for certain
9292 kinds of declarations (parameters, typenames, etc.). */
9295 error ("multiple storage classes in declaration of `%s'", name
);
9296 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9298 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9299 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9300 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9302 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9304 else if (decl_context
== FIELD
9305 && ! IS_SIGNATURE (current_class_type
)
9306 /* C++ allows static class elements */
9307 && RIDBIT_SETP (RID_STATIC
, specbits
))
9308 /* C++ also allows inlines and signed and unsigned elements,
9309 but in those cases we don't come in here. */
9313 if (decl_context
== FIELD
)
9315 tree tmp
= NULL_TREE
;
9316 register int op
= 0;
9320 /* Avoid trying to get an operand off an identifier node. */
9321 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9324 tmp
= TREE_OPERAND (declarator
, 0);
9325 op
= IDENTIFIER_OPNAME_P (tmp
);
9327 error ("storage class specified for %s `%s'",
9328 IS_SIGNATURE (current_class_type
)
9330 ? "signature member operator"
9331 : "signature member function")
9332 : (op
? "member operator" : "field"),
9333 op
? operator_name_string (tmp
) : name
);
9336 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9337 ? "storage class specified for parameter `%s'"
9338 : "storage class specified for typename"), name
);
9339 RIDBIT_RESET (RID_REGISTER
, specbits
);
9340 RIDBIT_RESET (RID_AUTO
, specbits
);
9341 RIDBIT_RESET (RID_EXTERN
, specbits
);
9343 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9345 RIDBIT_RESET (RID_STATIC
, specbits
);
9350 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9352 if (toplevel_bindings_p ())
9354 /* It's common practice (and completely valid) to have a const
9355 be initialized and declared extern. */
9357 warning ("`%s' initialized and declared `extern'", name
);
9360 error ("`%s' has both `extern' and initializer", name
);
9362 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9363 && ! toplevel_bindings_p ())
9364 error ("nested function `%s' declared `extern'", name
);
9365 else if (toplevel_bindings_p ())
9367 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9368 error ("top-level declaration of `%s' specifies `auto'", name
);
9371 if (nclasses
> 0 && friendp
)
9372 error ("storage class specifiers invalid in friend function declarations");
9374 /* Now figure out the structure of the declarator proper.
9375 Descend through it, creating more complex types, until we reach
9376 the declared identifier (or NULL_TREE, in an absolute declarator). */
9378 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9379 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9381 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9382 an INDIRECT_REF (for *...),
9383 a CALL_EXPR (for ...(...)),
9384 an identifier (for the name being declared)
9385 or a null pointer (for the place in an absolute declarator
9386 where the name was omitted).
9387 For the last two cases, we have just exited the loop.
9389 For C++ it could also be
9390 a SCOPE_REF (for class :: ...). In this case, we have converted
9391 sensible names to types, and those are the values we use to
9392 qualify the member name.
9393 an ADDR_EXPR (for &...),
9394 a BIT_NOT_EXPR (for destructors)
9396 At this point, TYPE is the type of elements of an array,
9397 or for a function to return, or for a pointer to point to.
9398 After this sequence of ifs, TYPE is the type of the
9399 array or function or pointer, and DECLARATOR has had its
9400 outermost layer removed. */
9402 if (type
== error_mark_node
)
9404 if (TREE_CODE (declarator
) == SCOPE_REF
)
9405 declarator
= TREE_OPERAND (declarator
, 1);
9407 declarator
= TREE_OPERAND (declarator
, 0);
9410 if (quals
!= NULL_TREE
9411 && (declarator
== NULL_TREE
9412 || TREE_CODE (declarator
) != SCOPE_REF
))
9414 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9415 ctype
= TYPE_METHOD_BASETYPE (type
);
9416 if (ctype
!= NULL_TREE
)
9418 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9419 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9420 type
= TREE_TYPE (dummy
);
9424 switch (TREE_CODE (declarator
))
9428 register tree itype
= NULL_TREE
;
9429 register tree size
= TREE_OPERAND (declarator
, 1);
9430 /* The index is a signed object `sizetype' bits wide. */
9431 tree index_type
= signed_type (sizetype
);
9433 declarator
= TREE_OPERAND (declarator
, 0);
9435 /* Check for some types that there cannot be arrays of. */
9437 if (TREE_CODE (type
) == VOID_TYPE
)
9439 cp_error ("declaration of `%D' as array of voids", dname
);
9440 type
= error_mark_node
;
9443 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9445 cp_error ("declaration of `%D' as array of functions", dname
);
9446 type
= error_mark_node
;
9449 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9450 you can't have arrays of references. If we allowed them,
9451 then we'd be saying x[i] is valid for an array x, but
9452 then you'd have to ask: what does `*(x + i)' mean? */
9453 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9455 if (decl_context
== TYPENAME
)
9456 cp_error ("cannot make arrays of references");
9458 cp_error ("declaration of `%D' as array of references",
9460 type
= error_mark_node
;
9463 if (TREE_CODE (type
) == OFFSET_TYPE
)
9465 cp_error ("declaration of `%D' as array of data members",
9467 type
= error_mark_node
;
9470 if (TREE_CODE (type
) == METHOD_TYPE
)
9472 cp_error ("declaration of `%D' as array of function members",
9474 type
= error_mark_node
;
9477 if (size
== error_mark_node
)
9478 type
= error_mark_node
;
9480 if (type
== error_mark_node
)
9485 /* Must suspend_momentary here because the index
9486 type may need to live until the end of the function.
9487 For example, it is used in the declaration of a
9488 variable which requires destructing at the end of
9489 the function; then build_vec_delete will need this
9491 int yes
= suspend_momentary ();
9492 /* Might be a cast. */
9493 if (TREE_CODE (size
) == NOP_EXPR
9494 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9495 size
= TREE_OPERAND (size
, 0);
9497 /* If this involves a template parameter, it'll be
9498 constant, but we don't know what the value is yet. */
9499 if (processing_template_decl
)
9501 itype
= make_node (INTEGER_TYPE
);
9502 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9503 TYPE_MAX_VALUE (itype
) = build_min
9504 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9505 goto dont_grok_size
;
9508 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9509 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9511 cp_error ("size of array `%D' has non-integer type",
9513 size
= integer_one_node
;
9515 if (TREE_READONLY_DECL_P (size
))
9516 size
= decl_constant_value (size
);
9517 if (pedantic
&& integer_zerop (size
))
9518 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9519 if (TREE_CONSTANT (size
))
9521 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9522 int old_pedantic
= pedantic
;
9523 pedantic
= flag_pedantic_errors
= 1;
9524 /* Always give overflow errors on array subscripts. */
9525 constant_expression_warning (size
);
9526 pedantic
= old_pedantic
;
9527 flag_pedantic_errors
= old_flag_pedantic_errors
;
9528 if (INT_CST_LT (size
, integer_zero_node
))
9530 cp_error ("size of array `%D' is negative", dname
);
9531 size
= integer_one_node
;
9539 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9542 cp_pedwarn ("ANSI C++ forbids variable-size array");
9547 = fold (build_binary_op (MINUS_EXPR
,
9548 cp_convert (index_type
, size
),
9549 cp_convert (index_type
,
9550 integer_one_node
), 1));
9551 if (! TREE_CONSTANT (itype
))
9552 itype
= variable_size (itype
);
9553 else if (TREE_OVERFLOW (itype
))
9555 error ("overflow in array dimension");
9556 TREE_OVERFLOW (itype
) = 0;
9559 /* If we're a parm, we need to have a permanent type so
9560 mangling checks for re-use will work right. If both the
9561 element and index types are permanent, the array type
9563 if (decl_context
== PARM
9564 && allocation_temporary_p () && TREE_PERMANENT (type
))
9566 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9567 itype
= build_index_type (itype
);
9571 itype
= build_index_type (itype
);
9574 resume_momentary (yes
);
9577 type
= build_cplus_array_type (type
, itype
);
9586 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9587 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9589 /* Declaring a function type.
9590 Make sure we have a valid type for the function to return. */
9592 /* We now know that constp and volatilep don't apply to the
9593 decl, but to its return type. */
9594 constp
= volatilep
= 0;
9596 /* Warn about some types functions can't return. */
9598 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9600 error ("`%s' declared as function returning a function", name
);
9601 type
= integer_type_node
;
9603 if (TREE_CODE (type
) == ARRAY_TYPE
)
9605 error ("`%s' declared as function returning an array", name
);
9606 type
= integer_type_node
;
9609 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9610 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9612 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9615 /* Pick up type qualifiers which should be applied to `this'. */
9616 quals
= TREE_OPERAND (declarator
, 2);
9618 /* Pick up the exception specifications. */
9619 raises
= TREE_TYPE (declarator
);
9621 /* Say it's a definition only for the CALL_EXPR
9622 closest to the identifier. */
9625 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9626 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9627 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9629 if (ctype
== NULL_TREE
9630 && decl_context
== FIELD
9632 && (friendp
== 0 || dname
== current_class_name
))
9633 ctype
= current_class_type
;
9635 if (ctype
&& return_type
== return_conversion
)
9636 TYPE_HAS_CONVERSION (ctype
) = 1;
9637 if (ctype
&& constructor_name (ctype
) == dname
)
9639 /* We are within a class's scope. If our declarator name
9640 is the same as the class name, and we are defining
9641 a function, then it is a constructor/destructor, and
9642 therefore returns a void type. */
9644 if (flags
== DTOR_FLAG
)
9646 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9647 not be declared const or volatile. A destructor
9648 may not be static. */
9650 error ("destructor cannot be static member function");
9653 cp_error ("destructors may not be `%s'",
9654 IDENTIFIER_POINTER (TREE_VALUE (quals
)));
9657 if (decl_context
== FIELD
)
9659 if (! member_function_or_else (ctype
, current_class_type
,
9660 "destructor for alien class `%s' cannot be a member"))
9661 return void_type_node
;
9664 else /* It's a constructor. */
9668 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9669 not be declared const or volatile. A constructor may
9670 not be virtual. A constructor may not be static. */
9672 error ("constructor cannot be static member function");
9675 pedwarn ("constructors cannot be declared virtual");
9680 cp_error ("constructors may not be `%s'",
9681 IDENTIFIER_POINTER (TREE_VALUE (quals
)));
9685 RID_BIT_TYPE tmp_bits
;
9686 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9687 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9688 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9689 if (RIDBIT_ANY_SET (tmp_bits
))
9690 error ("return value type specifier for constructor ignored");
9692 type
= build_pointer_type (ctype
);
9693 if (decl_context
== FIELD
9694 && IS_SIGNATURE (current_class_type
))
9696 error ("constructor not allowed in signature");
9697 return void_type_node
;
9699 else if (decl_context
== FIELD
)
9701 if (! member_function_or_else (ctype
, current_class_type
,
9702 "constructor for alien class `%s' cannot be member"))
9703 return void_type_node
;
9704 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9705 if (return_type
!= return_ctor
)
9709 if (decl_context
== FIELD
)
9715 error ("can't initialize friend function `%s'", name
);
9718 /* Cannot be both friend and virtual. */
9719 error ("virtual functions cannot be friends");
9720 RIDBIT_RESET (RID_FRIEND
, specbits
);
9723 if (decl_context
== NORMAL
)
9724 error ("friend declaration not in class definition");
9725 if (current_function_decl
&& funcdef_flag
)
9726 cp_error ("can't define friend function `%s' in a local class definition",
9730 /* Construct the function type and go to the next
9731 inner layer of declarator. */
9733 declarator
= TREE_OPERAND (declarator
, 0);
9735 /* FIXME: This is where default args should be fully
9738 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9740 if (declarator
&& flags
== DTOR_FLAG
)
9742 /* A destructor declared in the body of a class will
9743 be represented as a BIT_NOT_EXPR. But, we just
9744 want the underlying IDENTIFIER. */
9745 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9746 declarator
= TREE_OPERAND (declarator
, 0);
9748 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9749 arg_types
= void_list_node
;
9750 else if (arg_types
== NULL_TREE
9751 || arg_types
!= void_list_node
)
9753 cp_error ("destructors may not have parameters");
9754 arg_types
= void_list_node
;
9755 last_function_parms
= NULL_TREE
;
9759 /* ANSI says that `const int foo ();'
9760 does not make the function foo const. */
9761 type
= build_function_type (type
, arg_types
);
9765 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9766 if (TREE_PURPOSE (t
)
9767 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9769 add_defarg_fn (type
);
9778 /* Filter out pointers-to-references and references-to-references.
9779 We can get these if a TYPE_DECL is used. */
9781 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9783 error ("cannot declare %s to references",
9784 TREE_CODE (declarator
) == ADDR_EXPR
9785 ? "references" : "pointers");
9786 declarator
= TREE_OPERAND (declarator
, 0);
9790 if (TREE_CODE (type
) == OFFSET_TYPE
9791 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9792 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9794 cp_error ("cannot declare pointer to `%#T' member",
9796 type
= TREE_TYPE (type
);
9799 /* Merge any constancy or volatility into the target type
9802 /* We now know that constp and volatilep don't apply to the
9803 decl, but to the target of the pointer. */
9804 constp
= volatilep
= 0;
9806 if (IS_SIGNATURE (type
))
9808 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9810 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9811 && TYPE_SIZE (type
))
9812 cp_warning ("empty signature `%T' used in signature reference declaration",
9815 type
= build_signature_reference_type (type
);
9817 sorry ("signature reference");
9823 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9824 && TYPE_SIZE (type
))
9825 cp_warning ("empty signature `%T' used in signature pointer declaration",
9827 type
= build_signature_pointer_type (type
);
9832 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9834 if (TREE_CODE (type
) == VOID_TYPE
)
9835 error ("invalid type: `void &'");
9837 type
= build_reference_type (type
);
9839 else if (TREE_CODE (type
) == METHOD_TYPE
)
9841 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9844 type
= build_pointer_type (type
);
9846 /* Process a list of type modifier keywords (such as
9847 const or volatile) that were given inside the `*' or `&'. */
9849 if (TREE_TYPE (declarator
))
9851 register tree typemodlist
;
9853 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9854 typemodlist
= TREE_CHAIN (typemodlist
))
9856 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9858 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9863 error ("invalid type modifier within %s declarator",
9864 TREE_CODE (declarator
) == ADDR_EXPR
9865 ? "reference" : "pointer");
9869 pedwarn ("duplicate `const'");
9871 pedwarn ("duplicate `volatile'");
9872 if (TREE_CODE (declarator
) == ADDR_EXPR
9873 && (constp
|| volatilep
))
9876 pedwarn ("discarding `const' applied to a reference");
9878 pedwarn ("discarding `volatile' applied to a reference");
9879 constp
= volatilep
= 0;
9881 type
= cp_build_type_variant (type
, constp
, volatilep
);
9883 declarator
= TREE_OPERAND (declarator
, 0);
9889 /* We have converted type names to NULL_TREE if the
9890 name was bogus, or to a _TYPE node, if not.
9892 The variable CTYPE holds the type we will ultimately
9893 resolve to. The code here just needs to build
9894 up appropriate member types. */
9895 tree sname
= TREE_OPERAND (declarator
, 1);
9898 /* Destructors can have their visibilities changed as well. */
9899 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9900 sname
= TREE_OPERAND (sname
, 0);
9902 if (TREE_COMPLEXITY (declarator
) == 0)
9903 /* This needs to be here, in case we are called
9904 multiple times. */ ;
9905 else if (TREE_COMPLEXITY (declarator
) == -1)
9906 /* Namespace member. */
9907 pop_decl_namespace ();
9908 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9909 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9910 else if (! IS_AGGR_TYPE_CODE
9911 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9913 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9915 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9916 that refer to ctype. They couldn't be resolved earlier
9917 because we hadn't pushed into the class yet.
9918 Example: resolve 'B<T>::type' in
9919 'B<typename B<T>::type> B<T>::f () { }'. */
9920 if (current_template_parms
9921 && uses_template_parms (type
)
9922 && uses_template_parms (current_class_type
))
9924 tree args
= current_template_args ();
9925 type
= tsubst (type
, args
, NULL_TREE
);
9928 /* This pop_nested_class corresponds to the
9929 push_nested_class used to push into class scope for
9930 parsing the argument list of a function decl, in
9932 pop_nested_class (1);
9933 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9936 my_friendly_abort (16);
9938 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9940 /* We had a reference to a global decl, or
9941 perhaps we were given a non-aggregate typedef,
9942 in which case we cleared this out, and should just
9943 keep going as though it wasn't there. */
9947 ctype
= TREE_OPERAND (declarator
, 0);
9950 while (t
!= NULL_TREE
)
9952 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9953 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9954 template_count
+= 1;
9955 t
= TYPE_MAIN_DECL (t
);
9956 if (DECL_LANG_SPECIFIC (t
))
9957 t
= DECL_CLASS_CONTEXT (t
);
9962 if (sname
== NULL_TREE
)
9965 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9967 /* This is the `standard' use of the scoping operator:
9968 basetype :: member . */
9970 if (ctype
== current_class_type
)
9976 Is this ill-formed? */
9979 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9982 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9984 if (current_class_type
== NULL_TREE
9986 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
9987 TYPE_ARG_TYPES (type
));
9990 cp_error ("cannot declare member function `%T::%s' within `%T'",
9991 ctype
, name
, current_class_type
);
9992 return void_type_node
;
9995 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9996 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9998 /* Have to move this code elsewhere in this function.
9999 this code is used for i.e., typedef int A::M; M *pm;
10001 It is? How? jason 10/2/94 */
10003 if (current_class_type
)
10005 cp_error ("cannot declare member `%T::%s' within `%T'",
10006 ctype
, name
, current_class_type
);
10007 return void_type_node
;
10009 type
= build_offset_type (ctype
, type
);
10011 else if (uses_template_parms (ctype
))
10013 if (TREE_CODE (type
) == FUNCTION_TYPE
)
10015 = build_cplus_method_type (ctype
, TREE_TYPE (type
),
10016 TYPE_ARG_TYPES (type
));
10020 cp_error ("structure `%T' not yet defined", ctype
);
10021 return error_mark_node
;
10024 declarator
= sname
;
10026 else if (TREE_CODE (sname
) == SCOPE_REF
)
10027 my_friendly_abort (17);
10031 declarator
= TREE_OPERAND (declarator
, 1);
10032 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
10033 /* In this case, we will deal with it later. */
10037 if (TREE_CODE (type
) == FUNCTION_TYPE
)
10038 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10039 TYPE_ARG_TYPES (type
));
10041 type
= build_offset_type (ctype
, type
);
10048 declarator
= TREE_OPERAND (declarator
, 0);
10053 case ENUMERAL_TYPE
:
10054 declarator
= NULL_TREE
;
10058 declarator
= NULL_TREE
;
10062 my_friendly_abort (158);
10066 if (explicitp
== 1)
10068 error ("only constructors can be declared `explicit'");
10072 /* Now TYPE has the actual type. */
10074 /* If this is declaring a typedef name, return a TYPE_DECL. */
10076 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10080 error ("const `%s' cannot be declared `mutable'", name
);
10081 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10085 error ("static `%s' cannot be declared `mutable'", name
);
10086 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10090 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
10094 /* Note that the grammar rejects storage classes
10095 in typenames, fields or parameters. */
10096 if (current_lang_name
== lang_name_java
)
10097 TYPE_FOR_JAVA (type
) = 1;
10099 if (decl_context
== FIELD
)
10101 if (declarator
== current_class_name
)
10102 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
10104 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
10105 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
10106 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
10110 /* Make sure this typedef lives as long as its type,
10111 since it might be used as a template parameter. */
10112 if (type
!= error_mark_node
)
10113 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10114 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10115 if (type
!= error_mark_node
)
10119 /* If the user declares "struct {...} foo" then `foo' will have
10120 an anonymous name. Fill that name in now. Nothing can
10121 refer to it, so nothing needs know about the name change.
10122 The TYPE_NAME field was filled in by build_struct_xref. */
10123 if (type
!= error_mark_node
10124 && TYPE_NAME (type
)
10125 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10126 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10128 /* FIXME: This is bogus; we should not be doing this for
10129 cv-qualified types. */
10131 /* For anonymous structs that are cv-qualified, need to use
10132 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10133 type not referenced after this block, don't bother
10134 resetting type to original type, ie. TREE_TYPE (decl). */
10135 type
= TYPE_MAIN_VARIANT (type
);
10137 /* Replace the anonymous name with the real name everywhere. */
10138 lookup_tag_reverse (type
, declarator
);
10139 TYPE_NAME (type
) = decl
;
10141 if (TYPE_LANG_SPECIFIC (type
))
10142 TYPE_WAS_ANONYMOUS (type
) = 1;
10144 /* XXX Temporarily set the scope.
10145 When returning, start_decl expects it as NULL_TREE,
10146 and will then then set it using pushdecl. */
10147 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10148 if (current_class_type
)
10149 DECL_CONTEXT (decl
) = current_class_type
;
10151 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10153 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10154 DECL_ASSEMBLER_NAME (decl
)
10155 = get_identifier (build_overload_name (type
, 1, 1));
10156 DECL_CONTEXT (decl
) = NULL_TREE
;
10158 /* FIXME remangle member functions; member functions of a
10159 type with external linkage have external linkage. */
10162 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10164 cp_error_at ("typedef name may not be class-qualified", decl
);
10169 if (ctype
== NULL_TREE
)
10171 if (TREE_CODE (type
) != METHOD_TYPE
)
10172 cp_error_at ("invalid type qualifier for non-method type", decl
);
10174 ctype
= TYPE_METHOD_BASETYPE (type
);
10176 if (ctype
!= NULL_TREE
)
10177 grok_method_quals (ctype
, decl
, quals
);
10180 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10181 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10182 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10184 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10185 error ("non-object member `%s' cannot be declared mutable", name
);
10187 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10188 inlinep
, friendp
, raises
!= NULL_TREE
);
10191 error ("typedef declaration includes an initializer");
10196 /* Detect the case of an array type of unspecified size
10197 which came, as such, direct from a typedef name.
10198 We must copy the type, so that each identifier gets
10199 a distinct type, so that each identifier's size can be
10200 controlled separately by its own initializer. */
10202 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10203 && TYPE_DOMAIN (type
) == NULL_TREE
)
10205 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10208 /* If this is a type name (such as, in a cast or sizeof),
10209 compute the type and return it now. */
10211 if (decl_context
== TYPENAME
)
10213 /* Note that the grammar rejects storage classes
10214 in typenames, fields or parameters. */
10215 if (constp
|| volatilep
)
10217 if (IS_SIGNATURE (type
))
10218 error ("`const' or `volatile' specified with signature type");
10221 /* Special case: "friend class foo" looks like a TYPENAME context. */
10226 cp_error ("`volatile' specified for friend class declaration");
10231 cp_error ("`inline' specified for friend class declaration");
10235 /* Only try to do this stuff if we didn't already give up. */
10236 if (type
!= integer_type_node
)
10238 /* A friendly class? */
10239 if (current_class_type
)
10240 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10242 error ("trying to make class `%s' a friend of global scope",
10243 TYPE_NAME_STRING (type
));
10244 type
= void_type_node
;
10249 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10250 if (ctype
== NULL_TREE
)
10252 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10253 ctype
= TYPE_METHOD_BASETYPE (type
);
10255 grok_method_quals (ctype
, dummy
, quals
);
10256 type
= TREE_TYPE (dummy
);
10261 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10262 && decl_context
!= CATCHPARM
10263 && TREE_CODE (type
) != UNION_TYPE
10266 cp_error ("abstract declarator `%T' used as declaration", type
);
10267 declarator
= make_anon_name ();
10270 /* `void' at top level (not within pointer)
10271 is allowed only in typedefs or type names.
10272 We don't complain about parms either, but that is because
10273 a better error message can be made later. */
10275 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10278 error ("unnamed variable or field declared void");
10279 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10281 if (IDENTIFIER_OPNAME_P (declarator
))
10282 my_friendly_abort (356);
10284 error ("variable or field `%s' declared void", name
);
10287 error ("variable or field declared void");
10288 type
= integer_type_node
;
10291 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10292 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10294 if (decl_context
== PARM
|| decl_context
== CATCHPARM
)
10296 if (ctype
|| in_namespace
)
10297 error ("cannot use `::' in parameter declaration");
10299 /* A parameter declared as an array of T is really a pointer to T.
10300 One declared as a function is really a pointer to a function.
10301 One declared as a member is really a pointer to member. */
10303 if (TREE_CODE (type
) == ARRAY_TYPE
)
10305 /* Transfer const-ness of array into that of type pointed to. */
10306 type
= build_pointer_type (TREE_TYPE (type
));
10307 volatilep
= constp
= 0;
10309 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10310 type
= build_pointer_type (type
);
10311 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10312 type
= build_pointer_type (type
);
10313 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10315 error ("declaration of `%s' as void", name
);
10321 register tree decl
;
10323 if (decl_context
== PARM
)
10325 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10327 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10328 inlinep
, friendp
, raises
!= NULL_TREE
);
10329 if (current_class_type
10330 && IS_SIGNATURE (current_class_type
))
10333 error ("parameter of signature member function declared `inline'");
10334 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10335 error ("parameter of signature member function declared `auto'");
10336 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10337 error ("parameter of signature member function declared `register'");
10340 /* Compute the type actually passed in the parmlist,
10341 for the case where there is no prototype.
10342 (For example, shorts and chars are passed as ints.)
10343 When there is a prototype, this is overridden later. */
10345 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10347 else if (decl_context
== FIELD
)
10349 if (type
== error_mark_node
)
10351 /* Happens when declaring arrays of sizes which
10352 are error_mark_node, for example. */
10355 else if (in_namespace
)
10357 /* Something like struct S { int N::j; }; */
10358 cp_error ("invalid use of `::'");
10361 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10364 tree function_context
;
10366 /* We catch the others as conflicts with the builtin
10368 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10370 cp_error ("function `%D' cannot be declared friend",
10377 if (ctype
== NULL_TREE
)
10378 ctype
= current_class_type
;
10380 if (ctype
== NULL_TREE
)
10382 cp_error ("can't make `%D' into a method -- not in a class",
10384 return void_type_node
;
10387 /* ``A union may [ ... ] not [ have ] virtual functions.''
10389 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10391 cp_error ("function `%D' declared virtual inside a union",
10393 return void_type_node
;
10396 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10397 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10398 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10399 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10403 cp_error ("`%D' cannot be declared virtual, since it is always static",
10408 else if (staticp
< 2)
10409 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10410 TYPE_ARG_TYPES (type
));
10413 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10414 function_context
= (ctype
!= NULL_TREE
) ?
10415 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10416 publicp
= (! friendp
|| ! staticp
)
10417 && function_context
== NULL_TREE
;
10418 decl
= grokfndecl (ctype
, type
,
10419 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10420 ? declarator
: dname
,
10422 virtualp
, flags
, quals
, raises
, attrlist
,
10423 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10424 funcdef_flag
, template_count
, in_namespace
);
10425 if (decl
== NULL_TREE
|| decl
== error_mark_node
)
10428 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10429 /* The decl and setting of decl_machine_attr is also turned off. */
10430 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10433 if (explicitp
== 2)
10434 DECL_NONCONVERTING_P (decl
) = 1;
10436 else if (TREE_CODE (type
) == METHOD_TYPE
)
10438 /* We only get here for friend declarations of
10439 members of other classes. */
10440 /* All method decls are public, so tell grokfndecl to set
10441 TREE_PUBLIC, also. */
10442 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10443 virtualp
, flags
, quals
, raises
, attrlist
,
10444 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10445 template_count
, in_namespace
);
10446 if (decl
== NULL_TREE
)
10449 else if (!staticp
&& ! processing_template_decl
10450 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10451 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10454 cp_error ("field `%D' has incomplete type", declarator
);
10456 cp_error ("name `%T' has incomplete type", type
);
10458 /* If we're instantiating a template, tell them which
10459 instantiation made the field's type be incomplete. */
10460 if (current_class_type
10461 && TYPE_NAME (current_class_type
)
10462 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10463 && declspecs
&& TREE_VALUE (declspecs
)
10464 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10465 cp_error (" in instantiation of template `%T'",
10466 current_class_type
);
10468 type
= error_mark_node
;
10475 error ("`%s' is neither function nor method; cannot be declared friend",
10476 IDENTIFIER_POINTER (declarator
));
10484 /* Friends are treated specially. */
10485 if (ctype
== current_class_type
)
10486 warning ("member functions are implicitly friends of their class");
10489 tree t
= NULL_TREE
;
10490 if (decl
&& DECL_NAME (decl
))
10492 if (template_class_depth (current_class_type
) == 0)
10495 = check_explicit_specialization
10497 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10498 if (decl
== error_mark_node
)
10499 return error_mark_node
;
10502 t
= do_friend (ctype
, declarator
, decl
,
10503 last_function_parms
, flags
, quals
,
10506 if (t
&& funcdef_flag
)
10509 return void_type_node
;
10513 /* Structure field. It may not be a function, except for C++ */
10515 if (decl
== NULL_TREE
)
10521 /* An attempt is being made to initialize a non-static
10522 member. But, from [class.mem]:
10524 4 A member-declarator can contain a
10525 constant-initializer only if it declares a static
10526 member (_class.static_) of integral or enumeration
10527 type, see _class.static.data_.
10529 This used to be relatively common practice, but
10530 the rest of the compiler does not correctly
10531 handle the initialization unless the member is
10532 static so we make it static below. */
10533 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10534 constp
? "const member" : "member",
10536 cp_pedwarn ("making `%D' static", declarator
);
10540 /* Motion 10 at San Diego: If a static const integral data
10541 member is initialized with an integral constant
10542 expression, the initializer may appear either in the
10543 declaration (within the class), or in the definition,
10544 but not both. If it appears in the class, the member is
10545 a member constant. The file-scope definition is always
10547 if (CLASS_TYPE_P (type
)
10548 || TREE_CODE (type
) == REFERENCE_TYPE
)
10550 cp_error ("in-class initialization of static data member of non-integral type `%T'",
10552 /* If we just return the declaration, crashes will
10553 sometimes occur. We therefore return
10554 void_type_node, as if this was a friend
10555 declaration, to cause callers to completely
10556 ignore this declaration. */
10557 return void_type_node
;
10560 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10562 else if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10563 && !uses_template_parms (type
))
10564 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10569 /* ANSI C++ Apr '95 wp 9.2 */
10570 if (declarator
== current_class_name
)
10571 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10574 /* C++ allows static class members.
10575 All other work for this is done by grokfield.
10576 This VAR_DCL is built by build_lang_field_decl.
10577 All other VAR_DECLs are built by build_decl. */
10578 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10579 TREE_STATIC (decl
) = 1;
10580 /* In class context, 'static' means public access. */
10581 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10585 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10586 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10588 DECL_MUTABLE_P (decl
) = 1;
10589 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10593 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10594 inlinep
, friendp
, raises
!= NULL_TREE
);
10597 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10599 tree original_name
;
10605 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10606 original_name
= dname
;
10608 original_name
= declarator
;
10610 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10611 error ("storage class `auto' invalid for function `%s'", name
);
10612 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10613 error ("storage class `register' invalid for function `%s'", name
);
10615 /* Function declaration not at top level.
10616 Storage classes other than `extern' are not allowed
10617 and `extern' makes no difference. */
10618 if (! toplevel_bindings_p ()
10619 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10620 || RIDBIT_SETP (RID_INLINE
, specbits
))
10623 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10624 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10626 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10629 if (ctype
== NULL_TREE
)
10633 error ("virtual non-class function `%s'", name
);
10637 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10638 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10639 TYPE_ARG_TYPES (type
));
10641 /* Record presence of `static'. */
10642 publicp
= (ctype
!= NULL_TREE
10643 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10644 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10646 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10647 virtualp
, flags
, quals
, raises
, attrlist
,
10649 publicp
, inlinep
, funcdef_flag
,
10650 template_count
, in_namespace
);
10651 if (decl
== NULL_TREE
)
10654 /* Among other times, could occur from check_explicit_specialization
10655 returning an error_mark_node. */
10656 if (decl
== error_mark_node
)
10657 return error_mark_node
;
10661 int illegal_static
= 0;
10663 /* Don't allow a static member function in a class, and forbid
10664 declaring main to be static. */
10665 if (TREE_CODE (type
) == METHOD_TYPE
)
10667 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10668 illegal_static
= 1;
10670 else if (current_function_decl
)
10672 /* FIXME need arm citation */
10673 error ("cannot declare static function inside another function");
10674 illegal_static
= 1;
10677 if (illegal_static
)
10680 RIDBIT_RESET (RID_STATIC
, specbits
);
10686 /* It's a variable. */
10688 /* An uninitialized decl with `extern' is a reference. */
10689 decl
= grokvardecl (type
, declarator
, &specbits
,
10690 initialized
, constp
, in_namespace
);
10691 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10692 inlinep
, friendp
, raises
!= NULL_TREE
);
10696 DECL_CONTEXT (decl
) = ctype
;
10699 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10701 RIDBIT_RESET (RID_STATIC
, specbits
);
10703 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10705 cp_error ("static member `%D' declared `register'", decl
);
10706 RIDBIT_RESET (RID_REGISTER
, specbits
);
10708 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10710 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10712 RIDBIT_RESET (RID_EXTERN
, specbits
);
10717 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10719 error ("`%s' cannot be declared mutable", name
);
10722 /* Record `register' declaration for warnings on &
10723 and in case doing stupid register allocation. */
10725 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10726 DECL_REGISTER (decl
) = 1;
10728 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10729 DECL_THIS_EXTERN (decl
) = 1;
10731 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10732 DECL_THIS_STATIC (decl
) = 1;
10734 /* Record constancy and volatility. */
10737 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10740 TREE_SIDE_EFFECTS (decl
) = 1;
10741 TREE_THIS_VOLATILE (decl
) = 1;
10748 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10749 An empty exprlist is a parmlist. An exprlist which
10750 contains only identifiers at the global level
10751 is a parmlist. Otherwise, it is an exprlist. */
10754 parmlist_is_exprlist (exprs
)
10757 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10760 if (toplevel_bindings_p ())
10762 /* At the global level, if these are all identifiers,
10763 then it is a parmlist. */
10766 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10768 exprs
= TREE_CHAIN (exprs
);
10775 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10778 C++: also subroutine of `start_function'. */
10781 require_complete_types_for_parms (parms
)
10784 if (processing_template_decl
)
10789 tree type
= TREE_TYPE (parms
);
10790 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10792 if (DECL_NAME (parms
))
10793 error ("parameter `%s' has incomplete type",
10794 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10796 error ("parameter has incomplete type");
10797 TREE_TYPE (parms
) = error_mark_node
;
10800 /* If the arg types are incomplete in a declaration,
10801 they must include undefined tags.
10802 These tags can never be defined in the scope of the declaration,
10803 so the types can never be completed,
10804 and no call can be compiled successfully. */
10805 /* This is not the right behavior for C++, but not having
10806 it is also probably wrong. */
10809 /* Now warn if is a pointer to an incomplete type. */
10810 while (TREE_CODE (type
) == POINTER_TYPE
10811 || TREE_CODE (type
) == REFERENCE_TYPE
)
10812 type
= TREE_TYPE (type
);
10813 type
= TYPE_MAIN_VARIANT (type
);
10814 if (TYPE_SIZE (type
) == NULL_TREE
)
10816 if (DECL_NAME (parm
) != NULL_TREE
)
10817 warning ("parameter `%s' points to incomplete type",
10818 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10820 warning ("parameter points to incomplete type");
10824 parms
= TREE_CHAIN (parms
);
10828 /* Decode the list of parameter types for a function type.
10829 Given the list of things declared inside the parens,
10830 return a list of types.
10832 The list we receive can have three kinds of elements:
10833 an IDENTIFIER_NODE for names given without types,
10834 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10835 or void_type_node, to mark the end of an argument list
10836 when additional arguments are not permitted (... was not used).
10838 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10839 a mere declaration. A nonempty identifier-list gets an error message
10840 when FUNCDEF_FLAG is zero.
10841 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10842 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10844 If all elements of the input list contain types,
10845 we return a list of the types.
10846 If all elements contain no type (except perhaps a void_type_node
10847 at the end), we return a null list.
10848 If some have types and some do not, it is an error, and we
10849 return a null list.
10851 Also set last_function_parms to either
10852 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10853 A list of names is converted to a chain of PARM_DECLs
10854 by store_parm_decls so that ultimately it is always a chain of decls.
10856 Note that in C++, parameters can take default values. These default
10857 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10858 an error to specify default values which are followed by parameters
10859 that have no default values, or an ELLIPSES. For simplicities sake,
10860 only parameters which are specified with their types can take on
10864 grokparms (first_parm
, funcdef_flag
)
10868 tree result
= NULL_TREE
;
10869 tree decls
= NULL_TREE
;
10871 if (first_parm
!= NULL_TREE
10872 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10874 if (! funcdef_flag
)
10875 pedwarn ("parameter names (without types) in function declaration");
10876 last_function_parms
= first_parm
;
10879 else if (first_parm
!= NULL_TREE
10880 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10881 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10882 my_friendly_abort (145);
10885 /* Types were specified. This is a list of declarators
10886 each represented as a TREE_LIST node. */
10887 register tree parm
, chain
;
10888 int any_init
= 0, any_error
= 0;
10890 if (first_parm
!= NULL_TREE
)
10892 tree last_result
= NULL_TREE
;
10893 tree last_decl
= NULL_TREE
;
10895 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10897 tree type
= NULL_TREE
, list_node
= parm
;
10898 register tree decl
= TREE_VALUE (parm
);
10899 tree init
= TREE_PURPOSE (parm
);
10901 chain
= TREE_CHAIN (parm
);
10902 /* @@ weak defense against parse errors. */
10903 if (TREE_CODE (decl
) != VOID_TYPE
10904 && TREE_CODE (decl
) != TREE_LIST
)
10906 /* Give various messages as the need arises. */
10907 if (TREE_CODE (decl
) == STRING_CST
)
10908 cp_error ("invalid string constant `%E'", decl
);
10909 else if (TREE_CODE (decl
) == INTEGER_CST
)
10910 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10914 if (TREE_CODE (decl
) != VOID_TYPE
)
10916 decl
= grokdeclarator (TREE_VALUE (decl
),
10917 TREE_PURPOSE (decl
),
10918 PARM
, init
!= NULL_TREE
,
10923 /* Top-level qualifiers on the parameters are
10924 ignored for function types. */
10925 type
= TYPE_MAIN_VARIANT (TREE_TYPE (decl
));
10927 if (TREE_CODE (type
) == VOID_TYPE
)
10928 decl
= void_type_node
;
10929 else if (TREE_CODE (type
) == METHOD_TYPE
)
10931 if (DECL_NAME (decl
))
10932 /* Cannot use the decl here because
10933 we don't have DECL_CONTEXT set up yet. */
10934 cp_error ("parameter `%D' invalidly declared method type",
10937 error ("parameter invalidly declared method type");
10938 type
= build_pointer_type (type
);
10939 TREE_TYPE (decl
) = type
;
10941 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10943 if (DECL_NAME (decl
))
10944 cp_error ("parameter `%D' invalidly declared offset type",
10947 error ("parameter invalidly declared offset type");
10948 type
= build_pointer_type (type
);
10949 TREE_TYPE (decl
) = type
;
10951 else if (TREE_CODE (type
) == RECORD_TYPE
10952 && TYPE_LANG_SPECIFIC (type
)
10953 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10955 abstract_virtuals_error (decl
, type
);
10956 any_error
= 1; /* Seems like a good idea. */
10958 else if (TREE_CODE (type
) == RECORD_TYPE
10959 && TYPE_LANG_SPECIFIC (type
)
10960 && IS_SIGNATURE (type
))
10962 signature_error (decl
, type
);
10963 any_error
= 1; /* Seems like a good idea. */
10965 else if (POINTER_TYPE_P (type
))
10968 while (POINTER_TYPE_P (t
)
10969 || (TREE_CODE (t
) == ARRAY_TYPE
10970 && TYPE_DOMAIN (t
) != NULL_TREE
))
10972 if (TREE_CODE (t
) == ARRAY_TYPE
)
10973 cp_error ("parameter type `%T' includes %s to array of unknown bound",
10975 TYPE_PTR_P (type
) ? "pointer" : "reference");
10979 if (TREE_CODE (decl
) == VOID_TYPE
)
10981 if (result
== NULL_TREE
)
10983 result
= void_list_node
;
10984 last_result
= result
;
10988 TREE_CHAIN (last_result
) = void_list_node
;
10989 last_result
= void_list_node
;
10992 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10993 error ("`void' in parameter list must be entire list");
10997 /* Since there is a prototype, args are passed in their own types. */
10998 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10999 #ifdef PROMOTE_PROTOTYPES
11000 if ((TREE_CODE (type
) == INTEGER_TYPE
11001 || TREE_CODE (type
) == ENUMERAL_TYPE
)
11002 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
11003 DECL_ARG_TYPE (decl
) = integer_type_node
;
11010 if (TREE_CODE (init
) == SAVE_EXPR
)
11011 PARM_DECL_EXPR (init
) = 1;
11012 else if (processing_template_decl
)
11014 /* Unparsed default arg from in-class decl. */
11015 else if (TREE_CODE (init
) == DEFAULT_ARG
)
11017 else if (TREE_CODE (init
) == VAR_DECL
11018 || TREE_CODE (init
) == PARM_DECL
)
11020 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
11022 /* ``Local variables may not be used in default
11023 argument expressions.'' dpANSI C++ 8.2.6 */
11024 /* If extern int i; within a function is not
11025 considered a local variable, then this code is
11027 cp_error ("local variable `%D' may not be used as a default argument", init
);
11030 else if (TREE_READONLY_DECL_P (init
))
11031 init
= decl_constant_value (init
);
11034 init
= require_instantiated_type (type
, init
, integer_zero_node
);
11035 if (! processing_template_decl
11036 && init
!= error_mark_node
11037 && TREE_CODE (init
) != DEFAULT_ARG
11038 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
11039 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
11040 TREE_TYPE (init
), decl
);
11046 if (decls
== NULL_TREE
)
11053 TREE_CHAIN (last_decl
) = decl
;
11056 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
11058 TREE_PURPOSE (list_node
) = init
;
11059 TREE_VALUE (list_node
) = type
;
11060 TREE_CHAIN (list_node
) = NULL_TREE
;
11063 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
11064 if (result
== NULL_TREE
)
11066 result
= list_node
;
11067 last_result
= result
;
11071 TREE_CHAIN (last_result
) = list_node
;
11072 last_result
= list_node
;
11076 TREE_CHAIN (last_result
) = NULL_TREE
;
11077 /* If there are no parameters, and the function does not end
11078 with `...', then last_decl will be NULL_TREE. */
11079 if (last_decl
!= NULL_TREE
)
11080 TREE_CHAIN (last_decl
) = NULL_TREE
;
11084 last_function_parms
= decls
;
11086 /* In a fcn definition, arg types must be complete. */
11087 if (funcdef_flag
> 0)
11088 require_complete_types_for_parms (last_function_parms
);
11093 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11094 FUNCTION_TYPE with the newly parsed version of its default argument, which
11095 was previously digested as text. See snarf_defarg et al in lex.c. */
11098 replace_defarg (arg
, init
)
11101 if (! processing_template_decl
11102 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11103 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11104 TREE_TYPE (init
), TREE_VALUE (arg
));
11105 TREE_PURPOSE (arg
) = init
;
11112 tree t
= FUNCTION_ARG_CHAIN (d
);
11113 if (DECL_CONSTRUCTOR_P (d
)
11114 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11115 t
= TREE_CHAIN (t
);
11116 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11117 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11118 == DECL_CLASS_CONTEXT (d
))
11119 && (TREE_CHAIN (t
) == NULL_TREE
11120 || TREE_CHAIN (t
) == void_list_node
11121 || TREE_PURPOSE (TREE_CHAIN (t
))))
11126 /* These memoizing functions keep track of special properties which
11127 a class may have. `grok_ctor_properties' notices whether a class
11128 has a constructor of the form X(X&), and also complains
11129 if the class has a constructor of the form X(X).
11130 `grok_op_properties' takes notice of the various forms of
11131 operator= which are defined, as well as what sorts of type conversion
11132 may apply. Both functions take a FUNCTION_DECL as an argument. */
11135 grok_ctor_properties (ctype
, decl
)
11138 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11139 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11141 /* When a type has virtual baseclasses, a magical first int argument is
11142 added to any ctor so we can tell if the class has been initialized
11143 yet. This could screw things up in this function, so we deliberately
11144 ignore the leading int if we're in that situation. */
11145 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11147 my_friendly_assert (parmtypes
11148 && TREE_VALUE (parmtypes
) == integer_type_node
,
11150 parmtypes
= TREE_CHAIN (parmtypes
);
11151 parmtype
= TREE_VALUE (parmtypes
);
11154 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11155 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11156 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11157 || TREE_CHAIN (parmtypes
) == void_list_node
11158 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11160 TYPE_HAS_INIT_REF (ctype
) = 1;
11161 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11162 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11164 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11165 && TREE_CHAIN (parmtypes
) != NULL_TREE
11166 && TREE_CHAIN (parmtypes
) == void_list_node
)
11168 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11170 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11173 else if (TREE_CODE (parmtype
) == VOID_TYPE
11174 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11175 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11180 /* An operator with this name can be either unary or binary. */
11186 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11187 || name
== ansi_opname
[(int) ADDR_EXPR
]
11188 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11189 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11190 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11191 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11194 /* An operator with this name can only be unary. */
11200 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11201 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11202 || name
== ansi_opname
[(int) COMPONENT_REF
]
11203 || OPERATOR_TYPENAME_P (name
));
11206 /* Do a little sanity-checking on how they declared their operator. */
11209 grok_op_properties (decl
, virtualp
, friendp
)
11211 int virtualp
, friendp
;
11213 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11214 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11215 tree name
= DECL_NAME (decl
);
11217 if (current_class_type
== NULL_TREE
)
11222 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11223 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11224 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11225 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11226 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11227 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11228 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11229 || name
== ansi_opname
[(int) MEMBER_REF
])
11230 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11231 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11232 TYPE_GETS_NEW (current_class_type
) |= 1;
11233 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11234 TYPE_GETS_DELETE (current_class_type
) |= 1;
11235 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11236 TYPE_GETS_NEW (current_class_type
) |= 2;
11237 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11238 TYPE_GETS_DELETE (current_class_type
) |= 2;
11241 if (name
== ansi_opname
[(int) NEW_EXPR
]
11242 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11244 /* When the compiler encounters the definition of A::operator new, it
11245 doesn't look at the class declaration to find out if it's static. */
11247 revert_static_member_fn (&decl
, NULL
, NULL
);
11249 /* Take care of function decl if we had syntax errors. */
11250 if (argtypes
== NULL_TREE
)
11252 = build_function_type (ptr_type_node
,
11253 hash_tree_chain (integer_type_node
,
11256 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11258 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11259 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11262 revert_static_member_fn (&decl
, NULL
, NULL
);
11264 if (argtypes
== NULL_TREE
)
11266 = build_function_type (void_type_node
,
11267 hash_tree_chain (ptr_type_node
,
11271 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11273 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11274 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11275 != void_list_node
))
11276 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11281 /* An operator function must either be a non-static member function
11282 or have at least one parameter of a class, a reference to a class,
11283 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11284 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11286 if (OPERATOR_TYPENAME_P (name
)
11287 || name
== ansi_opname
[(int) CALL_EXPR
]
11288 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11289 || name
== ansi_opname
[(int) COMPONENT_REF
]
11290 || name
== ansi_opname
[(int) ARRAY_REF
])
11291 cp_error ("`%D' must be a nonstatic member function", decl
);
11296 if (DECL_STATIC_FUNCTION_P (decl
))
11297 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11300 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11302 tree arg
= TREE_VALUE (p
);
11303 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11304 arg
= TREE_TYPE (arg
);
11306 /* This lets bad template code slip through. */
11307 if (IS_AGGR_TYPE (arg
)
11308 || TREE_CODE (arg
) == ENUMERAL_TYPE
11309 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11310 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11314 ("`%D' must have an argument of class or enumerated type",
11321 if (name
== ansi_opname
[(int) CALL_EXPR
])
11322 return; /* No restrictions on args. */
11324 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11326 tree t
= TREE_TYPE (name
);
11327 if (TREE_CODE (t
) == VOID_TYPE
)
11328 pedwarn ("void is not a valid type conversion operator");
11329 else if (! friendp
)
11331 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11334 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11336 if (t
== current_class_type
)
11337 what
= "the same type";
11338 /* Don't force t to be complete here. */
11339 else if (IS_AGGR_TYPE (t
)
11341 && DERIVED_FROM_P (t
, current_class_type
))
11342 what
= "a base class";
11345 warning ("conversion to %s%s will never use a type conversion operator",
11346 ref
? "a reference to " : "", what
);
11350 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11354 if (list_length (argtypes
) != 3 && methodp
)
11356 cp_error ("`%D' must take exactly one argument", decl
);
11359 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11361 if (copy_assignment_arg_p (parmtype
, virtualp
)
11364 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11365 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11366 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11367 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11370 else if (name
== ansi_opname
[(int) COND_EXPR
])
11373 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11374 if (list_length (argtypes
) != 4)
11375 cp_error ("`%D' must take exactly three arguments", decl
);
11377 else if (ambi_op_p (name
))
11379 if (list_length (argtypes
) == 2)
11381 else if (list_length (argtypes
) == 3)
11383 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11384 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11385 && ! processing_template_decl
11386 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11389 cp_error ("postfix `%D' must take `int' as its argument",
11393 ("postfix `%D' must take `int' as its second argument",
11400 cp_error ("`%D' must take either zero or one argument", decl
);
11402 cp_error ("`%D' must take either one or two arguments", decl
);
11405 /* More Effective C++ rule 6. */
11407 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11408 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11410 tree arg
= TREE_VALUE (argtypes
);
11411 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11412 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11413 arg
= TREE_TYPE (arg
);
11414 arg
= TYPE_MAIN_VARIANT (arg
);
11415 if (list_length (argtypes
) == 2)
11417 if (TREE_CODE (ret
) != REFERENCE_TYPE
11418 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11420 cp_warning ("prefix `%D' should return `%T'", decl
,
11421 build_reference_type (arg
));
11425 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11426 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11430 else if (unary_op_p (name
))
11432 if (list_length (argtypes
) != 2)
11435 cp_error ("`%D' must take `void'", decl
);
11437 cp_error ("`%D' must take exactly one argument", decl
);
11440 else /* if (binary_op_p (name)) */
11442 if (list_length (argtypes
) != 3)
11445 cp_error ("`%D' must take exactly one argument", decl
);
11447 cp_error ("`%D' must take exactly two arguments", decl
);
11450 /* More Effective C++ rule 7. */
11452 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11453 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11454 || name
== ansi_opname
[COMPOUND_EXPR
]))
11455 cp_warning ("user-defined `%D' always evaluates both arguments",
11459 /* Effective C++ rule 23. */
11461 && list_length (argtypes
) == 3
11462 && (name
== ansi_opname
[PLUS_EXPR
]
11463 || name
== ansi_opname
[MINUS_EXPR
]
11464 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11465 || name
== ansi_opname
[MULT_EXPR
])
11466 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11467 cp_warning ("`%D' should return by value", decl
);
11471 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11472 if (TREE_PURPOSE (argtypes
))
11474 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11475 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11476 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11479 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11482 cp_error ("`%D' cannot have default arguments", decl
);
11487 /* Get the struct, enum or union (CODE says which) with tag NAME.
11488 Define the tag as a forward-reference if it is not defined.
11490 C++: If a class derivation is given, process it here, and report
11491 an error if multiple derivation declarations are not identical.
11493 If this is a definition, come in through xref_tag and only look in
11494 the current frame for the name (since C++ allows new names in any
11498 xref_tag (code_type_node
, name
, globalize
)
11499 tree code_type_node
;
11503 enum tag_types tag_code
;
11504 enum tree_code code
;
11506 register tree ref
, t
;
11507 struct binding_level
*b
= inner_binding_level
;
11509 tree attributes
= NULL_TREE
;
11511 /* If we are called from the parser, code_type_node will sometimes be a
11512 TREE_LIST. This indicates that the user wrote
11513 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11515 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11517 attributes
= TREE_PURPOSE (code_type_node
);
11518 code_type_node
= TREE_VALUE (code_type_node
);
11521 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11526 case signature_type
:
11527 code
= RECORD_TYPE
;
11533 code
= ENUMERAL_TYPE
;
11536 my_friendly_abort (18);
11539 /* If a cross reference is requested, look up the type
11540 already defined for this tag and return it. */
11541 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11544 name
= TYPE_IDENTIFIER (t
);
11548 t
= IDENTIFIER_TYPE_VALUE (name
);
11550 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11551 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11556 if (t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11557 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11559 cp_error ("redeclaration of template type-parameter `%T'", name
);
11560 cp_error_at (" previously declared here `%#D'",
11561 TEMPLATE_TYPE_DECL (t
));
11563 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11566 /* If we know we are defining this tag, only look it up in
11567 this scope and don't try to find it as a type. */
11568 ref
= lookup_tag (code
, name
, b
, 1);
11572 if (current_class_type
11573 && template_class_depth (current_class_type
)
11574 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11575 /* Since GLOBALIZE is non-zero, we are not looking at a
11576 definition of this tag. Since, in addition, we are currently
11577 processing a (member) template declaration of a template
11578 class, we don't want to do any lookup at all; consider:
11585 { template <class V>
11586 friend struct S1; };
11588 Here, the S2::S1 declaration should not be confused with the
11589 outer declaration. In particular, the inner version should
11590 have a template parameter of level 2, not level 1. This
11591 would be particularly important if the member declaration
11594 template <class V = U> friend struct S1;
11596 say, when we should tsubst into `U' when instantiating S2. */
11603 ref
= lookup_tag (code
, name
, b
, 0);
11607 /* Try finding it as a type declaration. If that wins,
11609 ref
= lookup_name (name
, 1);
11611 if (ref
!= NULL_TREE
11612 && processing_template_decl
11613 && DECL_CLASS_TEMPLATE_P (ref
)
11614 && template_class_depth (current_class_type
) == 0)
11615 /* Since GLOBALIZE is true, we're declaring a global
11616 template, so we want this type. */
11617 ref
= DECL_RESULT (ref
);
11619 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11620 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11621 ref
= TREE_TYPE (ref
);
11628 push_obstacks_nochange ();
11632 /* If no such tag is yet defined, create a forward-reference node
11633 and record it as the "definition".
11634 When a real declaration of this type is found,
11635 the forward-reference will be altered into a real type. */
11637 /* In C++, since these migrate into the global scope, we must
11638 build them on the permanent obstack. */
11640 temp
= allocation_temporary_p ();
11642 end_temporary_allocation ();
11644 if (code
== ENUMERAL_TYPE
)
11646 cp_error ("use of enum `%#D' without previous declaration", name
);
11648 ref
= make_node (ENUMERAL_TYPE
);
11650 /* Give the type a default layout like unsigned int
11651 to avoid crashing if it does not get defined. */
11652 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11653 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11654 TREE_UNSIGNED (ref
) = 1;
11655 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11656 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11657 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11659 /* Enable us to recognize when a type is created in class context.
11660 To do nested classes correctly, this should probably be cleared
11661 out when we leave this classes scope. Currently this in only
11662 done in `start_enum'. */
11664 pushtag (name
, ref
, globalize
);
11668 struct binding_level
*old_b
= class_binding_level
;
11670 ref
= make_lang_type (code
);
11672 if (tag_code
== signature_type
)
11674 SET_SIGNATURE (ref
);
11675 /* Since a signature type will be turned into the type
11676 of signature tables, it's not only an interface. */
11677 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11678 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11679 /* A signature doesn't have a vtable. */
11680 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11683 #ifdef NONNESTED_CLASSES
11684 /* Class types don't nest the way enums do. */
11685 class_binding_level
= (struct binding_level
*)0;
11687 pushtag (name
, ref
, globalize
);
11688 class_binding_level
= old_b
;
11693 /* If it no longer looks like a nested type, make sure it's
11695 If it is not an IDENTIFIER, this is not a declaration */
11696 if (b
->namespace_p
&& !class_binding_level
11697 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11699 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11700 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11703 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11704 redeclare_class_template (ref
, current_template_parms
);
11707 /* Until the type is defined, tentatively accept whatever
11708 structure tag the user hands us. */
11709 if (TYPE_SIZE (ref
) == NULL_TREE
11710 && ref
!= current_class_type
11711 /* Have to check this, in case we have contradictory tag info. */
11712 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11714 if (tag_code
== class_type
)
11715 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11716 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11717 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11722 TREE_TYPE (ref
) = attributes
;
11724 if (ref
&& TYPE_P (ref
))
11728 If the identifier resolves to a typedef-name or a template
11729 type-parameter, the elaborated-type-specifier is
11731 if (TYPE_LANG_SPECIFIC (ref
) && TYPE_WAS_ANONYMOUS (ref
))
11732 cp_error ("`%T' is a typedef name", ref
);
11733 else if (TREE_CODE (ref
) == TEMPLATE_TYPE_PARM
)
11734 cp_error ("`%T' is a template type paramter", ref
);
11741 xref_tag_from_type (old
, id
, globalize
)
11745 tree code_type_node
;
11747 if (TREE_CODE (old
) == RECORD_TYPE
)
11748 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11749 ? class_type_node
: record_type_node
);
11751 code_type_node
= union_type_node
;
11753 if (id
== NULL_TREE
)
11754 id
= TYPE_IDENTIFIER (old
);
11756 return xref_tag (code_type_node
, id
, globalize
);
11760 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11761 tree code_type_node
;
11765 /* In the declaration `A : X, Y, ... Z' we mark all the types
11766 (A, X, Y, ..., Z) so we can check for duplicates. */
11769 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11771 if (tag_code
== union_type
)
11773 cp_error ("derived union `%T' invalid", ref
);
11777 len
= list_length (binfo
);
11778 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11780 SET_CLASSTYPE_MARKED (ref
);
11781 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11783 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11785 /* The base of a derived struct is public by default. */
11787 = (TREE_PURPOSE (binfo
) == access_public_node
11788 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11789 || (tag_code
!= class_type
11790 && (TREE_PURPOSE (binfo
) == access_default_node
11791 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11793 = (TREE_PURPOSE (binfo
) == access_protected_node
11794 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11796 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11797 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11798 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11799 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11800 tree basetype
= TREE_VALUE (binfo
);
11803 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11804 basetype
= TREE_TYPE (basetype
);
11806 || (TREE_CODE (basetype
) != RECORD_TYPE
11807 && TREE_CODE (basetype
) != TYPENAME_TYPE
11808 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11809 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11811 cp_error ("base type `%T' fails to be a struct or class type",
11812 TREE_VALUE (binfo
));
11816 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11819 /* This code replaces similar code in layout_basetypes.
11820 We put the complete_type first for implicit `typename'. */
11821 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11822 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11824 cp_error ("base class `%T' has incomplete type", basetype
);
11830 if (CLASSTYPE_MARKED (basetype
))
11832 if (basetype
== ref
)
11833 cp_error ("recursive type `%T' undefined", basetype
);
11835 cp_error ("duplicate base type `%T' invalid", basetype
);
11839 if (TYPE_FOR_JAVA (basetype
)
11840 && current_lang_stack
== current_lang_base
)
11841 TYPE_FOR_JAVA (ref
) = 1;
11843 /* Note that the BINFO records which describe individual
11844 inheritances are *not* shared in the lattice! They
11845 cannot be shared because a given baseclass may be
11846 inherited with different `accessibility' by different
11847 derived classes. (Each BINFO record describing an
11848 individual inheritance contains flags which say what
11849 the `accessibility' of that particular inheritance is.) */
11851 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11852 TYPE_BINFO_VTABLE (basetype
),
11853 TYPE_BINFO_VIRTUALS (basetype
));
11855 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11856 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11857 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11858 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11859 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11861 /* We need to unshare the binfos now so that lookups during class
11862 definition work. */
11863 unshare_base_binfos (base_binfo
);
11865 SET_CLASSTYPE_MARKED (basetype
);
11867 /* We are free to modify these bits because they are meaningless
11868 at top level, and BASETYPE is a top-level type. */
11869 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11871 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11872 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11875 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11876 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11881 TREE_VEC_LENGTH (binfos
) = i
;
11883 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11886 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11888 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11889 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11890 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11891 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11893 /* Unmark all the types. */
11895 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11896 CLEAR_CLASSTYPE_MARKED (ref
);
11902 /* Begin compiling the definition of an enumeration type.
11903 NAME is its name (or null if anonymous).
11904 Returns the type object, as yet incomplete.
11905 Also records info about it so that build_enumerator
11906 may be used to declare the individual values as they are read. */
11912 register tree enumtype
= NULL_TREE
;
11913 struct binding_level
*b
= inner_binding_level
;
11915 /* We are wasting space here and putting these on the permanent_obstack so
11916 that typeid(local enum) will work correctly. */
11918 if (processing_template_decl
&& current_function_decl
)
11921 end_temporary_allocation ();
11923 /* If this is the real definition for a previous forward reference,
11924 fill in the contents in the same object that used to be the
11925 forward reference. */
11927 if (name
!= NULL_TREE
)
11928 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11930 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11931 cp_error ("multiple definition of `%#T'", enumtype
);
11934 enumtype
= make_node (ENUMERAL_TYPE
);
11935 pushtag (name
, enumtype
, 0);
11938 if (current_class_type
)
11939 TREE_ADDRESSABLE (b
->tags
) = 1;
11941 /* We don't copy this value because build_enumerator needs to do it. */
11942 enum_next_value
= integer_zero_node
;
11945 GNU_xref_decl (current_function_decl
, enumtype
);
11949 /* After processing and defining all the values of an enumeration type,
11950 install their decls in the enumeration type and finish it off.
11951 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11952 Returns ENUMTYPE. */
11955 finish_enum (enumtype
)
11958 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11959 /* Calculate the maximum value of any enumerator in this type. */
11961 tree values
= TYPE_VALUES (enumtype
);
11966 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11971 /* The TREE_VALUE is a CONST_DECL for this enumeration
11973 decl
= TREE_VALUE (pair
);
11975 /* The DECL_INITIAL will be NULL if we are processing a
11976 template declaration and this enumeration constant had no
11977 explicit initializer. */
11978 value
= DECL_INITIAL (decl
);
11979 if (value
&& !processing_template_decl
)
11981 /* Set the TREE_TYPE for the VALUE as well. That's so
11982 that when we call decl_constant_value we get an
11983 entity of the right type (but with the constant
11984 value). Since we shouldn't ever call
11985 decl_constant_value on a template type, there's no
11986 reason to do that when processing_template_decl.
11987 And, if the expression is something like a
11988 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
11989 wreak havoc on the intended type of the expression.
11991 Of course, there's also no point in trying to compute
11992 minimum or maximum values if we're in a template. */
11993 TREE_TYPE (value
) = enumtype
;
11996 minnode
= maxnode
= value
;
11997 else if (tree_int_cst_lt (maxnode
, value
))
11999 else if (tree_int_cst_lt (value
, minnode
))
12003 if (processing_template_decl
)
12004 /* If this is just a template, leave the CONST_DECL
12005 alone. That way tsubst_copy will find CONST_DECLs for
12006 CONST_DECLs, and not INTEGER_CSTs. */
12009 /* In the list we're building up, we want the enumeration
12010 values, not the CONST_DECLs. */
12011 TREE_VALUE (pair
) = value
;
12015 maxnode
= minnode
= integer_zero_node
;
12017 TYPE_VALUES (enumtype
) = nreverse (values
);
12019 if (processing_template_decl
)
12021 tree scope
= current_scope ();
12022 if (scope
&& TREE_CODE (scope
) == FUNCTION_DECL
)
12024 add_tree (build_min (TAG_DEFN
, enumtype
));
12025 resume_temporary_allocation ();
12031 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
12032 int lowprec
= min_precision (minnode
, unsignedp
);
12033 int highprec
= min_precision (maxnode
, unsignedp
);
12034 int precision
= MAX (lowprec
, highprec
);
12036 TYPE_SIZE (enumtype
) = NULL_TREE
;
12038 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
12040 TYPE_PRECISION (enumtype
) = precision
;
12042 fixup_unsigned_type (enumtype
);
12044 fixup_signed_type (enumtype
);
12046 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
12047 /* Use the width of the narrowest normal C type which is wide enough. */
12048 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
12051 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
12053 TYPE_SIZE (enumtype
) = 0;
12054 layout_type (enumtype
);
12060 /* Fix up all variant types of this enum type. */
12061 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
12062 tem
= TYPE_NEXT_VARIANT (tem
))
12064 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
12065 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
12066 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
12067 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
12068 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
12069 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
12070 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
12071 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
12072 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
12076 /* Finish debugging output for this type. */
12077 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
12082 /* Build and install a CONST_DECL for an enumeration constant of the
12083 enumeration type TYPE whose NAME and VALUE (if any) are provided.
12084 Assignment of sequential values by default is handled here. */
12087 build_enumerator (name
, value
, type
)
12095 /* Remove no-op casts from the value. */
12097 STRIP_TYPE_NOPS (value
);
12099 if (! processing_template_decl
)
12101 /* Validate and default VALUE. */
12102 if (value
!= NULL_TREE
)
12104 if (TREE_READONLY_DECL_P (value
))
12105 value
= decl_constant_value (value
);
12107 if (TREE_CODE (value
) == INTEGER_CST
)
12109 value
= default_conversion (value
);
12110 constant_expression_warning (value
);
12114 cp_error ("enumerator value for `%D' not integer constant", name
);
12119 /* Default based on previous value. */
12120 if (value
== NULL_TREE
&& ! processing_template_decl
)
12122 value
= enum_next_value
;
12124 cp_error ("overflow in enumeration values at `%D'", name
);
12127 /* Remove no-op casts from the value. */
12129 STRIP_TYPE_NOPS (value
);
12131 /* To fix MAX_VAL enum consts. (bkoz) */
12132 TREE_TYPE (value
) = integer_type_node
;
12136 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12137 Even in other cases, we will later (in finish_enum) be setting the
12139 if (value
!= NULL_TREE
)
12140 value
= copy_node (value
);
12142 /* C++ associates enums with global, function, or class declarations. */
12144 context
= current_scope ();
12145 if (context
&& context
== current_class_type
)
12146 /* This enum declaration is local to the class. */
12147 decl
= build_lang_field_decl (CONST_DECL
, name
, type
);
12149 /* It's a global enum, or it's local to a function. (Note local to
12150 a function could mean local to a class method. */
12151 decl
= build_decl (CONST_DECL
, name
, type
);
12153 DECL_CONTEXT (decl
) = FROB_CONTEXT (context
);
12154 DECL_INITIAL (decl
) = value
;
12155 TREE_READONLY (decl
) = 1;
12157 if (context
&& context
== current_class_type
)
12159 pushdecl_class_level (decl
);
12160 /* In something like `struct S { enum E { i = 7 }; };' we put `i'
12161 on the TYPE_FIELDS list for `S'. (That's so that you can say
12162 things like `S::i' later.) */
12163 finish_member_declaration (decl
);
12168 GNU_xref_decl (current_function_decl
, decl
);
12171 if (! processing_template_decl
)
12173 /* Set basis for default for next value. */
12174 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12175 integer_one_node
, PLUS_EXPR
);
12176 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12179 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12184 static int function_depth
;
12186 /* Create the FUNCTION_DECL for a function definition.
12187 DECLSPECS and DECLARATOR are the parts of the declaration;
12188 they describe the function's name and the type it returns,
12189 but twisted together in a fashion that parallels the syntax of C.
12191 This function creates a binding context for the function body
12192 as well as setting up the FUNCTION_DECL in current_function_decl.
12194 Returns 1 on success. If the DECLARATOR is not suitable for a function
12195 (it defines a datum instead), we return 0, which tells
12196 yyparse to report a parse error.
12198 For C++, we must first check whether that datum makes any sense.
12199 For example, "class A local_a(1,2);" means that variable local_a
12200 is an aggregate of type A, which should have a constructor
12201 applied to it with the argument list [1, 2].
12203 @@ There is currently no way to retrieve the storage
12204 @@ allocated to FUNCTION (or all of its parms) if we return
12205 @@ something we had previously. */
12208 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12209 tree declspecs
, declarator
, attrs
;
12213 tree ctype
= NULL_TREE
;
12216 extern int have_extern_spec
;
12217 extern int used_extern_spec
;
12218 int doing_friend
= 0;
12220 /* Sanity check. */
12221 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12222 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12224 /* Assume, until we see it does. */
12225 current_function_returns_value
= 0;
12226 current_function_returns_null
= 0;
12227 warn_about_return_type
= 0;
12229 shadowed_labels
= 0;
12230 current_function_assigns_this
= 0;
12231 current_function_just_assigned_this
= 0;
12232 current_function_parms_stored
= 0;
12233 original_result_rtx
= NULL_RTX
;
12234 base_init_expr
= NULL_TREE
;
12235 current_base_init_list
= NULL_TREE
;
12236 current_member_init_list
= NULL_TREE
;
12237 ctor_label
= dtor_label
= NULL_TREE
;
12238 static_labelno
= 0;
12240 clear_temp_name ();
12242 /* This should only be done once on the top most decl. */
12243 if (have_extern_spec
&& !used_extern_spec
)
12245 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12246 used_extern_spec
= 1;
12251 decl1
= declarator
;
12254 /* What was this testing for, exactly? */
12255 if (! DECL_ARGUMENTS (decl1
)
12256 && !DECL_STATIC_FUNCTION_P (decl1
)
12257 && !DECL_ARTIFICIAL (decl1
)
12258 && DECL_CLASS_SCOPE_P (decl1
)
12259 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12260 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12262 tree binding
= binding_for_name (DECL_NAME (decl1
),
12263 current_namespace
);
12264 cp_error ("redeclaration of `%#D'", decl1
);
12265 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12266 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12267 else if (BINDING_VALUE (binding
))
12268 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12272 fntype
= TREE_TYPE (decl1
);
12273 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12274 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12276 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12277 class is in the (lexical) scope of the class in which it is
12279 if (!ctype
&& DECL_FRIEND_P (decl1
))
12281 ctype
= DECL_CLASS_CONTEXT (decl1
);
12283 /* CTYPE could be null here if we're dealing with a template;
12284 for example, `inline friend float foo()' inside a template
12285 will have no CTYPE set. */
12286 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12292 /* In a fcn definition, arg types must be complete. */
12293 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12295 /* In case some arg types were completed since the declaration was
12296 parsed, fix up the decls. */
12298 tree t
= DECL_ARGUMENTS (decl1
);
12299 for (; t
; t
= TREE_CHAIN (t
))
12300 layout_decl (t
, 0);
12303 last_function_parms
= DECL_ARGUMENTS (decl1
);
12304 last_function_parm_tags
= NULL_TREE
;
12308 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12309 /* If the declarator is not suitable for a function definition,
12310 cause a syntax error. */
12311 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12313 fntype
= TREE_TYPE (decl1
);
12315 restype
= TREE_TYPE (fntype
);
12316 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12317 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12319 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12320 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12321 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12322 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12323 fntype
= build_function_type (integer_type_node
,
12324 TYPE_ARG_TYPES (fntype
));
12326 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12328 TYPE_ARG_TYPES (fntype
));
12329 TREE_TYPE (decl1
) = fntype
;
12332 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12333 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12334 else if (DECL_MAIN_P (decl1
))
12336 /* If this doesn't return integer_type, complain. */
12337 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12339 if (pedantic
|| warn_return_type
)
12340 pedwarn ("return type for `main' changed to `int'");
12341 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12343 warn_about_return_type
= 0;
12347 /* Warn if function was previously implicitly declared
12348 (but not if we warned then). */
12349 if (! warn_implicit
12350 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12351 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12353 current_function_decl
= decl1
;
12354 /* Save the parm names or decls from this function's declarator
12355 where store_parm_decls will find them. */
12356 current_function_parms
= last_function_parms
;
12357 current_function_parm_tags
= last_function_parm_tags
;
12359 announce_function (decl1
);
12361 if (! processing_template_decl
)
12363 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12365 cp_error ("return-type `%#T' is an incomplete type",
12366 TREE_TYPE (fntype
));
12368 /* Make it return void instead, but don't change the
12369 type of the DECL_RESULT, in case we have a named return value. */
12372 = build_cplus_method_type (build_type_variant (ctype
,
12373 TREE_READONLY (decl1
),
12374 TREE_SIDE_EFFECTS (decl1
)),
12376 FUNCTION_ARG_CHAIN (decl1
));
12379 = build_function_type (void_type_node
,
12380 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12381 DECL_RESULT (decl1
)
12382 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12383 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12384 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12387 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12388 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12389 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12392 if (warn_about_return_type
)
12393 pedwarn ("return-type defaults to `int'");
12395 /* Effective C++ rule 15. See also c_expand_return. */
12397 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12398 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12399 cp_warning ("`operator=' should return a reference to `*this'");
12401 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12402 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12403 DECL_INITIAL (decl1
) = error_mark_node
;
12405 #ifdef SET_DEFAULT_DECL_ATTRIBUTES
12406 SET_DEFAULT_DECL_ATTRIBUTES (decl1
, attrs
);
12409 /* This function exists in static storage.
12410 (This does not mean `static' in the C sense!) */
12411 TREE_STATIC (decl1
) = 1;
12413 /* Set up current_class_type, and enter the scope of the class, if
12416 push_nested_class (ctype
, 1);
12417 else if (DECL_STATIC_FUNCTION_P (decl1
))
12418 push_nested_class (DECL_CONTEXT (decl1
), 2);
12420 /* We must call push_template_decl after current_class_type is set
12421 up. (If we are processing inline definitions after exiting a
12422 class scope, current_class_type will be NULL_TREE until set above
12423 by push_nested_class.) */
12424 if (processing_template_decl
)
12425 decl1
= push_template_decl (decl1
);
12427 /* Record the decl so that the function name is defined.
12428 If we already have a decl for this name, and it is a FUNCTION_DECL,
12429 use the old decl. */
12430 if (!processing_template_decl
&& pre_parsed_p
== 0)
12432 /* A specialization is not used to guide overload resolution. */
12433 if ((flag_guiding_decls
12434 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12435 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12436 decl1
= pushdecl (decl1
);
12439 /* We need to set the DECL_CONTEXT. */
12440 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12441 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12442 /* And make sure we have enough default args. */
12443 check_default_args (decl1
);
12445 DECL_MAIN_VARIANT (decl1
) = decl1
;
12446 fntype
= TREE_TYPE (decl1
);
12449 current_function_decl
= decl1
;
12451 if (DECL_INTERFACE_KNOWN (decl1
))
12453 tree ctx
= hack_decl_function_context (decl1
);
12455 if (DECL_NOT_REALLY_EXTERN (decl1
))
12456 DECL_EXTERNAL (decl1
) = 0;
12458 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12459 && TREE_PUBLIC (ctx
))
12460 /* This is a function in a local class in an extern inline
12462 comdat_linkage (decl1
);
12464 /* If this function belongs to an interface, it is public.
12465 If it belongs to someone else's interface, it is also external.
12466 It doesn't matter whether it's inline or not. */
12467 else if (interface_unknown
== 0
12468 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12469 || flag_alt_external_templates
))
12471 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12472 || processing_template_decl
)
12473 DECL_EXTERNAL (decl1
)
12475 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12477 DECL_EXTERNAL (decl1
) = 0;
12478 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12479 DECL_INTERFACE_KNOWN (decl1
) = 1;
12483 /* This is a definition, not a reference.
12484 So clear DECL_EXTERNAL. */
12485 DECL_EXTERNAL (decl1
) = 0;
12487 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12488 && ! DECL_INTERFACE_KNOWN (decl1
)
12489 /* Don't try to defer nested functions for now. */
12490 && ! hack_decl_function_context (decl1
))
12491 DECL_DEFER_OUTPUT (decl1
) = 1;
12493 DECL_INTERFACE_KNOWN (decl1
) = 1;
12496 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12498 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12499 TREE_TYPE (decl1
) = fntype
12500 = build_function_type (TREE_TYPE (fntype
),
12501 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12502 current_function_parms
= TREE_CHAIN (current_function_parms
);
12503 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12506 restype
= TREE_TYPE (fntype
);
12510 /* If we're compiling a friend function, neither of the variables
12511 current_class_ptr nor current_class_type will have values. */
12512 if (! doing_friend
)
12514 /* We know that this was set up by `grokclassfn'.
12515 We do not wait until `store_parm_decls', since evil
12516 parse errors may never get us to that point. Here
12517 we keep the consistency between `current_class_type'
12518 and `current_class_ptr'. */
12519 tree t
= current_function_parms
;
12521 my_friendly_assert (t
!= NULL_TREE
12522 && TREE_CODE (t
) == PARM_DECL
, 162);
12524 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12526 int i
= suspend_momentary ();
12528 /* Fool build_indirect_ref. */
12529 current_class_ptr
= NULL_TREE
;
12530 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12531 current_class_ptr
= t
;
12532 resume_momentary (i
);
12535 /* We're having a signature pointer here. */
12536 current_class_ref
= current_class_ptr
= t
;
12542 current_class_ptr
= current_class_ref
= NULL_TREE
;
12546 current_binding_level
->parm_flag
= 1;
12548 GNU_xref_function (decl1
, current_function_parms
);
12551 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12553 make_function_rtl (decl1
);
12555 /* Promote the value to int before returning it. */
12556 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12557 restype
= type_promotes_to (restype
);
12559 /* If this fcn was already referenced via a block-scope `extern' decl
12560 (or an implicit decl), propagate certain information about the usage. */
12561 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12562 TREE_ADDRESSABLE (decl1
) = 1;
12564 if (DECL_RESULT (decl1
) == NULL_TREE
)
12566 DECL_RESULT (decl1
)
12567 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12568 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12569 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12572 /* Allocate further tree nodes temporarily during compilation
12573 of this function only. Tiemann moved up here from bottom of fn. */
12574 /* If this is a nested function, then we must continue to allocate RTL
12575 on the permanent obstack in case we need to inline it later. */
12576 if (! hack_decl_function_context (decl1
))
12577 temporary_allocation ();
12579 if (processing_template_decl
)
12581 ++minimal_parse_mode
;
12582 last_tree
= DECL_SAVED_TREE (decl1
)
12583 = build_nt (EXPR_STMT
, void_zero_node
);
12588 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12589 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12591 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12592 ctor_label
= NULL_TREE
;
12596 dtor_label
= NULL_TREE
;
12597 if (DECL_CONSTRUCTOR_P (decl1
))
12598 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12604 /* Called after store_parm_decls for a function-try-block. We need to update
12605 last_parm_cleanup_insn so that the base initializers for a constructor
12606 are run within this block, not before it. */
12609 expand_start_early_try_stmts ()
12611 expand_start_try_stmts ();
12612 last_parm_cleanup_insn
= get_last_insn ();
12615 /* Store the parameter declarations into the current function declaration.
12616 This is called after parsing the parameter declarations, before
12617 digesting the body of the function.
12619 Also install to binding contour return value identifier, if any. */
12622 store_parm_decls ()
12624 register tree fndecl
= current_function_decl
;
12625 register tree parm
;
12626 int parms_have_cleanups
= 0;
12627 tree cleanups
= NULL_TREE
;
12629 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12630 tree specparms
= current_function_parms
;
12632 /* This is a list of types declared among parms in a prototype. */
12633 tree parmtags
= current_function_parm_tags
;
12635 /* This is a chain of any other decls that came in among the parm
12636 declarations. If a parm is declared with enum {foo, bar} x;
12637 then CONST_DECLs for foo and bar are put here. */
12638 tree nonparms
= NULL_TREE
;
12640 if (toplevel_bindings_p ())
12641 fatal ("parse errors have confused me too much");
12643 /* Initialize RTL machinery. */
12644 init_function_start (fndecl
, input_filename
, lineno
);
12646 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12647 declare_function_name ();
12649 /* Create a binding level for the parms. */
12650 expand_start_bindings (0);
12652 if (specparms
!= NULL_TREE
)
12654 /* This case is when the function was defined with an ANSI prototype.
12655 The parms already have decls, so we need not do anything here
12656 except record them as in effect
12657 and complain if any redundant old-style parm decls were written. */
12659 register tree next
;
12661 /* Must clear this because it might contain TYPE_DECLs declared
12663 storedecls (NULL_TREE
);
12665 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12667 next
= TREE_CHAIN (parm
);
12668 if (TREE_CODE (parm
) == PARM_DECL
)
12671 if (DECL_NAME (parm
) == NULL_TREE
)
12675 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12676 cp_error ("parameter `%D' declared void", parm
);
12679 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12680 A parameter is assumed not to have any side effects.
12681 If this should change for any reason, then this
12682 will have to wrap the bashed reference type in a save_expr.
12684 Also, if the parameter type is declared to be an X
12685 and there is an X(X&) constructor, we cannot lay it
12686 into the stack (any more), so we make this parameter
12687 look like it is really of reference type. Functions
12688 which pass parameters to this function will know to
12689 create a temporary in their frame, and pass a reference
12692 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12693 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12694 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12698 if (! processing_template_decl
12699 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12701 expand_decl (parm
);
12702 parms_have_cleanups
= 1;
12704 /* Keep track of the cleanups. */
12705 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12710 /* If we find an enum constant or a type tag,
12711 put it aside for the moment. */
12712 TREE_CHAIN (parm
) = NULL_TREE
;
12713 nonparms
= chainon (nonparms
, parm
);
12717 /* Get the decls in their original chain order
12718 and record in the function. This is all and only the
12719 PARM_DECLs that were pushed into scope by the loop above. */
12720 DECL_ARGUMENTS (fndecl
) = getdecls ();
12722 storetags (chainon (parmtags
, gettags ()));
12725 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12727 /* Now store the final chain of decls for the arguments
12728 as the decl-chain of the current lexical scope.
12729 Put the enumerators in as well, at the front so that
12730 DECL_ARGUMENTS is not modified. */
12732 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12734 /* Initialize the RTL code for the function. */
12735 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12736 if (! processing_template_decl
)
12737 expand_function_start (fndecl
, parms_have_cleanups
);
12739 current_function_parms_stored
= 1;
12741 /* If this function is `main', emit a call to `__main'
12742 to run global initializers, etc. */
12743 if (DECL_MAIN_P (fndecl
))
12744 expand_main_function ();
12746 /* Now that we have initialized the parms, we can start their
12747 cleanups. We cannot do this before, since expand_decl_cleanup
12748 should not be called before the parm can be used. */
12750 && ! processing_template_decl
)
12752 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12754 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12755 cp_error ("parser lost in parsing declaration of `%D'",
12756 TREE_PURPOSE (cleanups
));
12760 /* Create a binding contour which can be used to catch
12761 cleanup-generated temporaries. Also, if the return value needs or
12762 has initialization, deal with that now. */
12763 if (parms_have_cleanups
)
12766 expand_start_bindings (0);
12769 if (! processing_template_decl
&& flag_exceptions
)
12771 /* Do the starting of the exception specifications, if we have any. */
12772 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12773 expand_start_eh_spec ();
12776 last_parm_cleanup_insn
= get_last_insn ();
12777 last_dtor_insn
= get_last_insn ();
12780 /* Bind a name and initialization to the return value of
12781 the current function. */
12784 store_return_init (return_id
, init
)
12785 tree return_id
, init
;
12787 tree decl
= DECL_RESULT (current_function_decl
);
12790 /* Give this error as many times as there are occurrences,
12791 so that users can use Emacs compilation buffers to find
12792 and fix all such places. */
12793 pedwarn ("ANSI C++ does not permit named return values");
12795 if (return_id
!= NULL_TREE
)
12797 if (DECL_NAME (decl
) == NULL_TREE
)
12799 DECL_NAME (decl
) = return_id
;
12800 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12803 cp_error ("return identifier `%D' already in place", decl
);
12806 /* Can't let this happen for constructors. */
12807 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12809 error ("can't redefine default return value for constructors");
12813 /* If we have a named return value, put that in our scope as well. */
12814 if (DECL_NAME (decl
) != NULL_TREE
)
12816 /* If this named return value comes in a register,
12817 put it in a pseudo-register. */
12818 if (DECL_REGISTER (decl
))
12820 original_result_rtx
= DECL_RTL (decl
);
12821 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12824 /* Let `cp_finish_decl' know that this initializer is ok. */
12825 DECL_INITIAL (decl
) = init
;
12828 if (minimal_parse_mode
)
12829 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12830 copy_to_permanent (init
)));
12832 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12837 /* Finish up a function declaration and compile that function
12838 all the way to assembler language output. The free the storage
12839 for the function definition.
12841 This is called after parsing the body of the function definition.
12842 LINENO is the current line number.
12844 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12845 (and expand_end_bindings) must be made to take care of the binding
12846 contour for the base initializers. This is only relevant for
12849 NESTED is nonzero if we were in the middle of compiling another function
12850 when we started on this one. */
12853 finish_function (lineno
, call_poplevel
, nested
)
12858 register tree fndecl
= current_function_decl
;
12859 tree fntype
, ctype
= NULL_TREE
;
12860 rtx last_parm_insn
, insns
;
12861 /* Label to use if this function is supposed to return a value. */
12862 tree no_return_label
= NULL_TREE
;
12863 tree decls
= NULL_TREE
;
12865 /* When we get some parse errors, we can end up without a
12866 current_function_decl, so cope. */
12867 if (fndecl
== NULL_TREE
)
12870 if (! nested
&& function_depth
> 1)
12873 fntype
= TREE_TYPE (fndecl
);
12875 /* TREE_READONLY (fndecl) = 1;
12876 This caused &foo to be of type ptr-to-const-function
12877 which then got a warning when stored in a ptr-to-function variable. */
12879 /* This happens on strange parse errors. */
12880 if (! current_function_parms_stored
)
12883 store_parm_decls ();
12886 if (processing_template_decl
)
12888 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12890 decls
= getdecls ();
12891 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12892 poplevel (decls
!= NULL_TREE
, 0, 0);
12897 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12899 tree ttype
= target_type (fntype
);
12902 if (IS_AGGR_TYPE (ttype
))
12903 /* Let debugger know it should output info for this type. */
12904 note_debug_info_needed (ttype
);
12906 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12908 ttype
= target_type (TREE_TYPE (parmdecl
));
12909 if (IS_AGGR_TYPE (ttype
))
12910 /* Let debugger know it should output info for this type. */
12911 note_debug_info_needed (ttype
);
12915 /* Clean house because we will need to reorder insns here. */
12916 do_pending_stack_adjust ();
12920 tree binfo
= TYPE_BINFO (current_class_type
);
12921 tree cond
= integer_one_node
;
12923 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12925 int ok_to_optimize_dtor
= 0;
12926 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12928 if (current_function_assigns_this
)
12929 cond
= build (NE_EXPR
, boolean_type_node
,
12930 current_class_ptr
, integer_zero_node
);
12933 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12935 /* If this destructor is empty, then we don't need to check
12936 whether `this' is NULL in some cases. */
12937 if ((flag_this_is_variable
& 1) == 0)
12938 ok_to_optimize_dtor
= 1;
12939 else if (empty_dtor
)
12940 ok_to_optimize_dtor
12941 = (n_baseclasses
== 0
12942 || (n_baseclasses
== 1
12943 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12946 /* These initializations might go inline. Protect
12947 the binding level of the parms. */
12949 expand_start_bindings (0);
12951 if (current_function_assigns_this
)
12953 current_function_assigns_this
= 0;
12954 current_function_just_assigned_this
= 0;
12957 /* Generate the code to call destructor on base class.
12958 If this destructor belongs to a class with virtual
12959 functions, then set the virtual function table
12960 pointer to represent the type of our base class. */
12962 /* This side-effect makes call to `build_delete' generate the
12963 code we have to have at the end of this destructor. */
12964 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12966 /* These are two cases where we cannot delegate deletion. */
12967 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12968 || TYPE_GETS_REG_DELETE (current_class_type
))
12969 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12970 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12972 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12973 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12975 /* If we did not assign to this, then `this' is non-zero at
12976 the end of a destructor. As a special optimization, don't
12977 emit test if this is an empty destructor. If it does nothing,
12978 it does nothing. If it calls a base destructor, the base
12979 destructor will perform the test. */
12981 if (exprstmt
!= error_mark_node
12982 && (TREE_CODE (exprstmt
) != NOP_EXPR
12983 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12984 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12986 expand_label (dtor_label
);
12987 if (cond
!= integer_one_node
)
12988 expand_start_cond (cond
, 0);
12989 if (exprstmt
!= void_zero_node
)
12990 /* Don't call `expand_expr_stmt' if we're not going to do
12991 anything, since -Wall will give a diagnostic. */
12992 expand_expr_stmt (exprstmt
);
12994 /* Run destructor on all virtual baseclasses. */
12995 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12997 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12998 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12999 in_charge_node
, integer_two_node
), 0);
13002 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
13004 tree vb
= get_vbase
13005 (BINFO_TYPE (vbases
),
13006 TYPE_BINFO (current_class_type
));
13008 (build_scoped_method_call
13009 (current_class_ref
, vb
, dtor_identifier
,
13010 build_expr_list (NULL_TREE
, integer_zero_node
)));
13012 vbases
= TREE_CHAIN (vbases
);
13014 expand_end_cond ();
13017 do_pending_stack_adjust ();
13018 if (cond
!= integer_one_node
)
13019 expand_end_cond ();
13022 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
13024 virtual_size
= c_sizeof (current_class_type
);
13026 /* At the end, call delete if that's what's requested. */
13028 /* FDIS sez: At the point of definition of a virtual destructor
13029 (including an implicit definition), non-placement operator
13030 delete shall be looked up in the scope of the destructor's
13031 class and if found shall be accessible and unambiguous.
13033 This is somewhat unclear, but I take it to mean that if the
13034 class only defines placement deletes we don't do anything here.
13035 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
13036 for us if they ever try to delete one of these. */
13038 if (TYPE_GETS_REG_DELETE (current_class_type
)
13039 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13040 exprstmt
= build_op_delete_call
13041 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
13042 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
13044 exprstmt
= NULL_TREE
;
13048 cond
= build (BIT_AND_EXPR
, integer_type_node
,
13049 in_charge_node
, integer_one_node
);
13050 expand_start_cond (cond
, 0);
13051 expand_expr_stmt (exprstmt
);
13052 expand_end_cond ();
13055 /* End of destructor. */
13056 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
13057 poplevel (2, 0, 0); /* XXX change to 1 */
13059 /* Back to the top of destructor. */
13060 /* Don't execute destructor code if `this' is NULL. */
13064 /* If the dtor is empty, and we know there is not possible way we
13065 could use any vtable entries, before they are possibly set by
13066 a base class dtor, we don't have to setup the vtables, as we
13067 know that any base class dtoring will set up any vtables it
13068 needs. We avoid MI, because one base class dtor can do a
13069 virtual dispatch to an overridden function that would need to
13070 have a non-related vtable set up, we cannot avoid setting up
13071 vtables in that case. We could change this to see if there is
13072 just one vtable. */
13073 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13075 /* Make all virtual function table pointers in non-virtual base
13076 classes point to CURRENT_CLASS_TYPE's virtual function
13078 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13080 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13081 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13084 if (! ok_to_optimize_dtor
)
13086 cond
= build_binary_op (NE_EXPR
,
13087 current_class_ptr
, integer_zero_node
, 1);
13088 expand_start_cond (cond
, 0);
13091 insns
= get_insns ();
13094 last_parm_insn
= get_first_nonparm_insn ();
13095 if (last_parm_insn
== NULL_RTX
)
13096 last_parm_insn
= get_last_insn ();
13098 last_parm_insn
= previous_insn (last_parm_insn
);
13100 emit_insns_after (insns
, last_parm_insn
);
13102 if (! ok_to_optimize_dtor
)
13103 expand_end_cond ();
13105 else if (current_function_assigns_this
)
13107 /* Does not need to call emit_base_init, because
13108 that is done (if needed) just after assignment to this
13111 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13113 end_protect_partials ();
13114 expand_label (ctor_label
);
13115 ctor_label
= NULL_TREE
;
13119 decls
= getdecls ();
13120 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13121 poplevel (decls
!= NULL_TREE
, 0, 0);
13123 /* c_expand_return knows to return 'this' from a constructor. */
13124 c_expand_return (NULL_TREE
);
13126 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13127 && return_label
!= NULL_RTX
)
13128 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13130 current_function_assigns_this
= 0;
13131 current_function_just_assigned_this
= 0;
13132 base_init_expr
= NULL_TREE
;
13134 else if (DECL_CONSTRUCTOR_P (fndecl
))
13136 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13137 /* Allow constructor for a type to get a new instance of the object
13138 using `build_new'. */
13139 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13140 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13142 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13144 if (flag_this_is_variable
> 0)
13146 cond
= build_binary_op (EQ_EXPR
,
13147 current_class_ptr
, integer_zero_node
, 1);
13148 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13149 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13152 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13156 if (flag_this_is_variable
> 0)
13158 expand_start_cond (cond
, 0);
13159 expand_expr_stmt (thenclause
);
13160 expand_end_cond ();
13163 /* Emit insns from `emit_base_init' which sets up virtual
13164 function table pointer(s). */
13165 if (base_init_expr
)
13167 expand_expr_stmt (base_init_expr
);
13168 base_init_expr
= NULL_TREE
;
13171 insns
= get_insns ();
13174 /* This is where the body of the constructor begins. */
13176 emit_insns_after (insns
, last_parm_cleanup_insn
);
13178 end_protect_partials ();
13180 /* This is where the body of the constructor ends. */
13181 expand_label (ctor_label
);
13182 ctor_label
= NULL_TREE
;
13186 decls
= getdecls ();
13187 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13188 poplevel (decls
!= NULL_TREE
, 1, 0);
13191 /* c_expand_return knows to return 'this' from a constructor. */
13192 c_expand_return (NULL_TREE
);
13194 current_function_assigns_this
= 0;
13195 current_function_just_assigned_this
= 0;
13197 else if (DECL_MAIN_P (fndecl
))
13199 /* Make it so that `main' always returns 0 by default. */
13201 c_expand_return (integer_one_node
);
13203 c_expand_return (integer_zero_node
);
13206 else if (return_label
!= NULL_RTX
13207 && current_function_return_value
== NULL_TREE
13208 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13209 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13211 if (flag_exceptions
)
13212 expand_exception_blocks ();
13214 /* If this function is supposed to return a value, ensure that
13215 we do not fall into the cleanups by mistake. The end of our
13216 function will look like this:
13218 user code (may have return stmt somewhere)
13219 goto no_return_label
13224 NOTE_INSN_FUNCTION_END
13228 If the user omits a return stmt in the USER CODE section, we
13229 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13230 Otherwise, we won't. */
13231 if (no_return_label
)
13233 DECL_CONTEXT (no_return_label
) = fndecl
;
13234 DECL_INITIAL (no_return_label
) = error_mark_node
;
13235 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13236 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13237 expand_goto (no_return_label
);
13242 /* Remove the binding contour which is used
13243 to catch cleanup-generated temporaries. */
13244 expand_end_bindings (0, 0, 0);
13245 poplevel (0, 0, 0);
13247 /* Emit label at beginning of cleanup code for parameters. */
13248 emit_label (cleanup_label
);
13251 /* Get return value into register if that's where it's supposed to be. */
13252 if (original_result_rtx
)
13253 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13255 /* Finish building code that will trigger warnings if users forget
13256 to make their functions return values. */
13257 if (no_return_label
|| cleanup_label
)
13258 emit_jump (return_label
);
13259 if (no_return_label
)
13261 /* We don't need to call `expand_*_return' here because we
13262 don't need any cleanups here--this path of code is only
13263 for error checking purposes. */
13264 expand_label (no_return_label
);
13267 /* Generate rtl for function exit. */
13268 expand_function_end (input_filename
, lineno
, 1);
13271 /* This must come after expand_function_end because cleanups might
13272 have declarations (from inline functions) that need to go into
13273 this function's blocks. */
13274 if (current_binding_level
->parm_flag
!= 1)
13275 my_friendly_abort (122);
13276 poplevel (1, 0, 1);
13278 /* Reset scope for C++: if we were in the scope of a class,
13279 then when we finish this function, we are not longer so.
13280 This cannot be done until we know for sure that no more
13281 class members will ever be referenced in this function
13282 (i.e., calls to destructors). */
13283 if (current_class_name
)
13285 ctype
= current_class_type
;
13286 pop_nested_class (1);
13289 /* Must mark the RESULT_DECL as being in this function. */
13290 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13292 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13293 to the FUNCTION_DECL node itself. */
13294 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13296 if (! processing_template_decl
)
13298 int saved_flag_keep_inline_functions
=
13299 flag_keep_inline_functions
;
13301 /* So we can tell if jump_optimize sets it to 1. */
13304 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13305 && hack_decl_function_context (fndecl
))
13306 /* Trick rest_of_compilation into not deferring output of this
13307 function, even if it is inline, since the rtl_obstack for
13308 this function is the function_obstack of the enclosing
13309 function and will be deallocated when the enclosing
13310 function is gone. See save_tree_status. */
13311 flag_keep_inline_functions
= 1;
13313 /* Run the optimizers and output the assembler code for this
13316 if (DECL_ARTIFICIAL (fndecl
))
13318 /* Do we really *want* to inline this synthesized method? */
13320 int save_fif
= flag_inline_functions
;
13321 flag_inline_functions
= 1;
13323 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13324 will check our size. */
13325 DECL_INLINE (fndecl
) = 0;
13327 rest_of_compilation (fndecl
);
13328 flag_inline_functions
= save_fif
;
13331 rest_of_compilation (fndecl
);
13333 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13335 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13337 /* Set DECL_EXTERNAL so that assemble_external will be called as
13338 necessary. We'll clear it again in finish_file. */
13339 if (! DECL_EXTERNAL (fndecl
))
13340 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13341 DECL_EXTERNAL (fndecl
) = 1;
13342 mark_inline_for_output (fndecl
);
13345 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13346 note_debug_info_needed (ctype
);
13348 current_function_returns_null
|= can_reach_end
;
13350 /* Since we don't normally go through c_expand_return for constructors,
13351 this normally gets the wrong value.
13352 Also, named return values have their return codes emitted after
13353 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13354 if (DECL_CONSTRUCTOR_P (fndecl
)
13355 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13356 current_function_returns_null
= 0;
13358 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13359 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13360 else if ((warn_return_type
|| pedantic
)
13361 && current_function_returns_null
13362 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13364 /* If this function returns non-void and control can drop through,
13366 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13368 /* With just -W, complain only if function returns both with
13369 and without a value. */
13370 else if (extra_warnings
13371 && current_function_returns_value
&& current_function_returns_null
)
13372 warning ("this function may return with or without a value");
13377 /* Free all the tree nodes making up this function. */
13378 /* Switch back to allocating nodes permanently
13379 until we start another function. */
13380 if (processing_template_decl
)
13382 --minimal_parse_mode
;
13383 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13387 permanent_allocation (1);
13389 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13393 /* Stop pointing to the local nodes about to be freed. */
13394 /* But DECL_INITIAL must remain nonzero so we know this
13395 was an actual function definition. */
13396 DECL_INITIAL (fndecl
) = error_mark_node
;
13397 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13398 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13401 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13402 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13403 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13404 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13408 /* Let the error reporting routines know that we're outside a
13409 function. For a nested function, this value is used in
13410 pop_cp_function_context and then reset via pop_function_context. */
13411 current_function_decl
= NULL_TREE
;
13414 named_label_uses
= NULL
;
13415 current_class_ptr
= NULL_TREE
;
13416 current_class_ref
= NULL_TREE
;
13419 /* Create the FUNCTION_DECL for a function definition.
13420 LINE1 is the line number that the definition absolutely begins on.
13421 LINE2 is the line number that the name of the function appears on.
13422 DECLSPECS and DECLARATOR are the parts of the declaration;
13423 they describe the return type and the name of the function,
13424 but twisted together in a fashion that parallels the syntax of C.
13426 This function creates a binding context for the function body
13427 as well as setting up the FUNCTION_DECL in current_function_decl.
13429 Returns a FUNCTION_DECL on success.
13431 If the DECLARATOR is not suitable for a function (it defines a datum
13432 instead), we return 0, which tells yyparse to report a parse error.
13434 May return void_type_node indicating that this method is actually
13435 a friend. See grokfield for more details.
13437 Came here with a `.pushlevel' .
13439 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13440 CHANGES TO CODE IN `grokfield'. */
13443 start_method (declspecs
, declarator
, attrlist
)
13444 tree declarator
, declspecs
, attrlist
;
13446 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13449 /* Something too ugly to handle. */
13450 if (fndecl
== NULL_TREE
)
13453 /* Pass friends other than inline friend functions back. */
13454 if (fndecl
== void_type_node
)
13457 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13458 /* Not a function, tell parser to report parse error. */
13461 if (IS_SIGNATURE (current_class_type
))
13462 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13464 if (DECL_IN_AGGR_P (fndecl
))
13466 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13468 if (DECL_CONTEXT (fndecl
)
13469 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13470 cp_error ("`%D' is already defined in class %s", fndecl
,
13471 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13473 return void_type_node
;
13476 DECL_THIS_INLINE (fndecl
) = 1;
13478 if (flag_default_inline
)
13479 DECL_INLINE (fndecl
) = 1;
13481 /* We process method specializations in finish_struct_1. */
13482 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13483 fndecl
= push_template_decl (fndecl
);
13485 /* We read in the parameters on the maybepermanent_obstack,
13486 but we won't be getting back to them until after we
13487 may have clobbered them. So the call to preserve_data
13488 will keep them safe. */
13491 if (! DECL_FRIEND_P (fndecl
))
13493 if (TREE_CHAIN (fndecl
))
13495 fndecl
= copy_node (fndecl
);
13496 TREE_CHAIN (fndecl
) = NULL_TREE
;
13499 if (DECL_CONSTRUCTOR_P (fndecl
))
13501 if (! grok_ctor_properties (current_class_type
, fndecl
))
13502 return void_type_node
;
13504 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13505 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13508 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13510 /* Make a place for the parms */
13512 current_binding_level
->parm_flag
= 1;
13514 DECL_IN_AGGR_P (fndecl
) = 1;
13518 /* Go through the motions of finishing a function definition.
13519 We don't compile this method until after the whole class has
13522 FINISH_METHOD must return something that looks as though it
13523 came from GROKFIELD (since we are defining a method, after all).
13525 This is called after parsing the body of the function definition.
13526 STMTS is the chain of statements that makes up the function body.
13528 DECL is the ..._DECL that `start_method' provided. */
13531 finish_method (decl
)
13534 register tree fndecl
= decl
;
13537 register tree link
;
13539 if (decl
== void_type_node
)
13542 old_initial
= DECL_INITIAL (fndecl
);
13544 /* Undo the level for the parms (from start_method).
13545 This is like poplevel, but it causes nothing to be
13546 saved. Saving information here confuses symbol-table
13547 output routines. Besides, this information will
13548 be correctly output when this method is actually
13551 /* Clear out the meanings of the local variables of this level;
13552 also record in each decl which block it belongs to. */
13554 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13556 if (DECL_NAME (link
) != NULL_TREE
)
13557 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13558 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13559 DECL_CONTEXT (link
) = NULL_TREE
;
13562 /* Restore all name-meanings of the outer levels
13563 that were shadowed by this level. */
13565 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13566 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13567 for (link
= current_binding_level
->class_shadowed
;
13568 link
; link
= TREE_CHAIN (link
))
13569 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13570 for (link
= current_binding_level
->type_shadowed
;
13571 link
; link
= TREE_CHAIN (link
))
13572 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13574 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13575 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13576 current_binding_level
->parm_flag
,
13577 current_binding_level
->keep
);
13579 poplevel (0, 0, 0);
13581 DECL_INITIAL (fndecl
) = old_initial
;
13583 /* We used to check if the context of FNDECL was different from
13584 current_class_type as another way to get inside here. This didn't work
13585 for String.cc in libg++. */
13586 if (DECL_FRIEND_P (fndecl
))
13588 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13589 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13590 decl
= void_type_node
;
13596 /* Called when a new struct TYPE is defined.
13597 If this structure or union completes the type of any previous
13598 variable declaration, lay it out and output its rtl. */
13601 hack_incomplete_structures (type
)
13606 if (current_binding_level
->incomplete
== NULL_TREE
)
13609 if (!type
) /* Don't do this for class templates. */
13612 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13614 tree decl
= TREE_VALUE (*list
);
13615 if ((decl
&& TREE_TYPE (decl
) == type
)
13616 || (TREE_TYPE (decl
)
13617 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13618 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13620 int toplevel
= toplevel_bindings_p ();
13621 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13622 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13623 layout_type (TREE_TYPE (decl
));
13624 layout_decl (decl
, 0);
13625 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13629 expand_decl (decl
);
13630 cleanup
= maybe_build_cleanup (decl
);
13631 expand_decl_init (decl
);
13632 if (! expand_decl_cleanup (decl
, cleanup
))
13633 cp_error ("parser lost in parsing declaration of `%D'",
13636 *list
= TREE_CHAIN (*list
);
13639 list
= &TREE_CHAIN (*list
);
13643 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13644 See build_delete for information about AUTO_DELETE.
13646 Don't build these on the momentary obstack; they must live
13647 the life of the binding contour. */
13650 maybe_build_cleanup_1 (decl
, auto_delete
)
13651 tree decl
, auto_delete
;
13653 tree type
= TREE_TYPE (decl
);
13654 if (TYPE_NEEDS_DESTRUCTOR (type
))
13656 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13659 if (TREE_CODE (decl
) != PARM_DECL
)
13660 temp
= suspend_momentary ();
13662 if (TREE_CODE (type
) == ARRAY_TYPE
)
13666 mark_addressable (decl
);
13667 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13670 /* Optimize for space over speed here. */
13671 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13672 || flag_expensive_optimizations
)
13673 flags
|= LOOKUP_NONVIRTUAL
;
13675 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13677 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13678 && ! TYPE_HAS_DESTRUCTOR (type
))
13679 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13680 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13682 if (TREE_CODE (decl
) != PARM_DECL
)
13683 resume_momentary (temp
);
13690 /* If DECL is of a type which needs a cleanup, build that cleanup
13691 here. The cleanup does free the storage with a call to delete. */
13694 maybe_build_cleanup_and_delete (decl
)
13697 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13700 /* If DECL is of a type which needs a cleanup, build that cleanup
13701 here. The cleanup does not free the storage with a call a delete. */
13704 maybe_build_cleanup (decl
)
13707 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13710 /* Expand a C++ expression at the statement level.
13711 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13712 The C++ type checker should get all of these out when
13713 expressions are combined with other, type-providing, expressions,
13714 leaving only orphan expressions, such as:
13716 &class::bar; / / takes its address, but does nothing with it. */
13719 cplus_expand_expr_stmt (exp
)
13722 if (processing_template_decl
)
13724 add_tree (build_min_nt (EXPR_STMT
, exp
));
13728 /* Arrange for all temps to disappear. */
13729 expand_start_target_temps ();
13731 if (TREE_TYPE (exp
) == unknown_type_node
)
13733 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13734 error ("address of overloaded function with no contextual type information");
13735 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13736 warning ("useless reference to a member function name, did you forget the ()?");
13740 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13742 cp_warning ("reference, not call, to function `%D'", exp
);
13743 warning ("at this point in file");
13747 /* We should do this eventually, but right now this causes regex.o from
13748 libg++ to miscompile, and tString to core dump. */
13749 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13752 /* Strip unused implicit INDIRECT_REFs of references. */
13753 if (TREE_CODE (exp
) == INDIRECT_REF
13754 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13755 exp
= TREE_OPERAND (exp
, 0);
13757 /* If we don't do this, we end up down inside expand_expr
13758 trying to do TYPE_MODE on the ERROR_MARK, and really
13759 go outside the bounds of the type. */
13760 if (exp
!= error_mark_node
)
13761 expand_expr_stmt (break_out_cleanups (exp
));
13764 /* Clean up any pending cleanups. This happens when a function call
13765 returns a cleanup-needing value that nobody uses. */
13766 expand_end_target_temps ();
13769 /* When a stmt has been parsed, this function is called.
13771 Currently, this function only does something within a
13772 constructor's scope: if a stmt has just assigned to this,
13773 and we are in a derived class, we call `emit_base_init'. */
13778 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13781 if (current_function_assigns_this
13782 || ! current_function_just_assigned_this
)
13784 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13786 /* Constructors must wait until we are out of control
13787 zones before calling base constructors. */
13788 if (cond_stack
|| loop_stack
|| case_stack
)
13790 expand_expr_stmt (base_init_expr
);
13791 check_base_init (current_class_type
);
13793 current_function_assigns_this
= 1;
13796 /* Change a static member function definition into a FUNCTION_TYPE, instead
13797 of the METHOD_TYPE that we create when it's originally parsed.
13799 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13800 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13801 other decls. Either pass the addresses of local variables or NULL. */
13804 revert_static_member_fn (decl
, fn
, argtypes
)
13805 tree
*decl
, *fn
, *argtypes
;
13808 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13809 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13811 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13812 cp_error ("static member function `%#D' declared const", *decl
);
13813 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13814 cp_error ("static member function `%#D' declared volatile", *decl
);
13816 args
= TREE_CHAIN (args
);
13817 tmp
= build_function_type (TREE_TYPE (function
), args
);
13818 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13819 TYPE_VOLATILE (function
));
13820 tmp
= build_exception_variant (tmp
,
13821 TYPE_RAISES_EXCEPTIONS (function
));
13822 TREE_TYPE (*decl
) = tmp
;
13823 if (DECL_ARGUMENTS (*decl
))
13824 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13825 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13833 id_in_current_class (id
)
13836 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13843 int warn_about_return_type
;
13845 int just_assigned_this
;
13847 int temp_name_counter
;
13849 tree shadowed_labels
;
13852 rtx last_dtor_insn
;
13853 rtx last_parm_cleanup_insn
;
13854 tree base_init_list
;
13855 tree member_init_list
;
13856 tree base_init_expr
;
13857 tree current_class_ptr
;
13858 tree current_class_ref
;
13860 struct cp_function
*next
;
13861 struct binding_level
*binding_level
;
13862 int static_labelno
;
13865 static struct cp_function
*cp_function_chain
;
13867 extern int temp_name_counter
;
13869 /* Save and reinitialize the variables
13870 used during compilation of a C++ function. */
13873 push_cp_function_context (context
)
13876 struct cp_function
*p
13877 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13879 push_function_context_to (context
);
13881 p
->next
= cp_function_chain
;
13882 cp_function_chain
= p
;
13884 p
->named_labels
= named_labels
;
13885 p
->shadowed_labels
= shadowed_labels
;
13886 p
->returns_value
= current_function_returns_value
;
13887 p
->returns_null
= current_function_returns_null
;
13888 p
->warn_about_return_type
= warn_about_return_type
;
13889 p
->binding_level
= current_binding_level
;
13890 p
->ctor_label
= ctor_label
;
13891 p
->dtor_label
= dtor_label
;
13892 p
->last_dtor_insn
= last_dtor_insn
;
13893 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13894 p
->assigns_this
= current_function_assigns_this
;
13895 p
->just_assigned_this
= current_function_just_assigned_this
;
13896 p
->parms_stored
= current_function_parms_stored
;
13897 p
->result_rtx
= original_result_rtx
;
13898 p
->base_init_expr
= base_init_expr
;
13899 p
->temp_name_counter
= temp_name_counter
;
13900 p
->base_init_list
= current_base_init_list
;
13901 p
->member_init_list
= current_member_init_list
;
13902 p
->current_class_ptr
= current_class_ptr
;
13903 p
->current_class_ref
= current_class_ref
;
13904 p
->static_labelno
= static_labelno
;
13907 /* Restore the variables used during compilation of a C++ function. */
13910 pop_cp_function_context (context
)
13913 struct cp_function
*p
= cp_function_chain
;
13916 /* Bring back all the labels that were shadowed. */
13917 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13918 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13919 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13920 TREE_VALUE (link
));
13922 pop_function_context_from (context
);
13924 cp_function_chain
= p
->next
;
13926 named_labels
= p
->named_labels
;
13927 shadowed_labels
= p
->shadowed_labels
;
13928 current_function_returns_value
= p
->returns_value
;
13929 current_function_returns_null
= p
->returns_null
;
13930 warn_about_return_type
= p
->warn_about_return_type
;
13931 current_binding_level
= p
->binding_level
;
13932 ctor_label
= p
->ctor_label
;
13933 dtor_label
= p
->dtor_label
;
13934 last_dtor_insn
= p
->last_dtor_insn
;
13935 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13936 current_function_assigns_this
= p
->assigns_this
;
13937 current_function_just_assigned_this
= p
->just_assigned_this
;
13938 current_function_parms_stored
= p
->parms_stored
;
13939 original_result_rtx
= p
->result_rtx
;
13940 base_init_expr
= p
->base_init_expr
;
13941 temp_name_counter
= p
->temp_name_counter
;
13942 current_base_init_list
= p
->base_init_list
;
13943 current_member_init_list
= p
->member_init_list
;
13944 current_class_ptr
= p
->current_class_ptr
;
13945 current_class_ref
= p
->current_class_ref
;
13946 static_labelno
= p
->static_labelno
;
13954 return function_depth
!= 0;