1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 92-97, 1998 Free Software Foundation, Inc.
3 Contributed by Michael Tiemann (tiemann@cygnus.com)
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
23 /* Process declarations and symbol lookup for C front end.
24 Also constructs types; the standard scalar types at initialization,
25 and structure, union, array and enum types when they are declared. */
27 /* ??? not all decl nodes are given the most useful possible
28 line numbers. For example, the CONST_DECLs for enum values. */
45 #define obstack_chunk_alloc xmalloc
46 #define obstack_chunk_free free
48 extern tree builtin_return_address_fndecl
;
50 extern struct obstack permanent_obstack
;
51 extern struct obstack
* saveable_obstack
;
53 extern int current_class_depth
;
55 extern tree static_ctors
, static_dtors
;
57 extern int static_labelno
;
59 extern tree current_namespace
;
60 extern tree global_namespace
;
62 extern void (*print_error_function
) PROTO((char *));
64 /* Stack of places to restore the search obstack back to. */
66 /* Obstack used for remembering local class declarations (like
67 enums and static (const) members. */
69 struct obstack decl_obstack
;
70 static struct stack_level
*decl_stack
;
72 #ifndef CHAR_TYPE_SIZE
73 #define CHAR_TYPE_SIZE BITS_PER_UNIT
76 #ifndef SHORT_TYPE_SIZE
77 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
81 #define INT_TYPE_SIZE BITS_PER_WORD
84 #ifndef LONG_TYPE_SIZE
85 #define LONG_TYPE_SIZE BITS_PER_WORD
88 #ifndef LONG_LONG_TYPE_SIZE
89 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
92 #ifndef WCHAR_UNSIGNED
93 #define WCHAR_UNSIGNED 0
96 #ifndef FLOAT_TYPE_SIZE
97 #define FLOAT_TYPE_SIZE BITS_PER_WORD
100 #ifndef DOUBLE_TYPE_SIZE
101 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
104 #ifndef LONG_DOUBLE_TYPE_SIZE
105 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
108 #ifndef BOOL_TYPE_SIZE
109 #ifdef SLOW_BYTE_ACCESS
110 #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE))
112 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
116 /* We let tm.h override the types used here, to handle trivial differences
117 such as the choice of unsigned int or long unsigned int for size_t.
118 When machines start needing nontrivial differences in the size type,
119 it would be best to do something here to figure out automatically
120 from other information what type to use. */
123 #define SIZE_TYPE "long unsigned int"
127 #define PTRDIFF_TYPE "long int"
131 #define WCHAR_TYPE "int"
134 static tree grokparms
PROTO((tree
, int));
135 static tree lookup_nested_type
PROTO((tree
, tree
));
136 static char *redeclaration_error_message
PROTO((tree
, tree
));
137 static tree push_overloaded_decl
PROTO((tree
, int));
139 static struct stack_level
*push_decl_level
PROTO((struct stack_level
*,
141 static void push_binding_level
PROTO((struct binding_level
*, int,
143 static void pop_binding_level
PROTO((void));
144 static void suspend_binding_level
PROTO((void));
145 static void resume_binding_level
PROTO((struct binding_level
*));
146 static struct binding_level
*make_binding_level
PROTO((void));
147 static int namespace_bindings_p
PROTO((void));
148 static void declare_namespace_level
PROTO((void));
149 static void signal_catch
PROTO((int));
150 static void storedecls
PROTO((tree
));
151 static void storetags
PROTO((tree
));
152 static void require_complete_types_for_parms
PROTO((tree
));
153 static void push_overloaded_decl_1
PROTO((tree
));
154 static int ambi_op_p
PROTO((tree
));
155 static int unary_op_p
PROTO((tree
));
156 static tree store_bindings
PROTO((tree
, tree
));
157 static tree lookup_tag_reverse
PROTO((tree
, tree
));
158 static tree obscure_complex_init
PROTO((tree
, tree
));
159 static tree maybe_build_cleanup_1
PROTO((tree
, tree
));
160 static tree lookup_name_real
PROTO((tree
, int, int, int));
161 static void warn_extern_redeclared_static
PROTO((tree
, tree
));
162 static void grok_reference_init
PROTO((tree
, tree
, tree
));
163 static tree grokfndecl
PROTO((tree
, tree
, tree
, tree
, int,
164 enum overload_flags
, tree
,
165 tree
, tree
, int, int, int, int, int, int, tree
));
166 static tree grokvardecl
PROTO((tree
, tree
, RID_BIT_TYPE
*, int, int, tree
));
167 static tree lookup_tag
PROTO((enum tree_code
, tree
,
168 struct binding_level
*, int));
169 static void set_identifier_type_value_with_scope
170 PROTO((tree
, tree
, struct binding_level
*));
171 static void set_identifier_local_value_with_scope
172 PROTO((tree
, tree
, struct binding_level
*));
173 static void record_builtin_type
PROTO((enum rid
, char *, tree
));
174 static void record_unknown_type
PROTO((tree
, char *));
175 static int member_function_or_else
PROTO((tree
, tree
, char *));
176 static void bad_specifiers
PROTO((tree
, char *, int, int, int, int,
178 static void lang_print_error_function
PROTO((char *));
179 static tree maybe_process_template_type_declaration
PROTO((tree
, int, struct binding_level
*));
181 #if defined (DEBUG_CP_BINDING_LEVELS)
182 static void indent
PROTO((void));
185 /* A node which has tree code ERROR_MARK, and whose type is itself.
186 All erroneous expressions are replaced with this node. All functions
187 that accept nodes as arguments should avoid generating error messages
188 if this node is one of the arguments, since it is undesirable to get
189 multiple error messages from one error in the input. */
191 tree error_mark_node
;
193 /* Erroneous argument lists can use this *IFF* they do not modify it. */
194 tree error_mark_list
;
196 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
198 tree short_integer_type_node
;
199 tree integer_type_node
;
200 tree long_integer_type_node
;
201 tree long_long_integer_type_node
;
203 tree short_unsigned_type_node
;
204 tree unsigned_type_node
;
205 tree long_unsigned_type_node
;
206 tree long_long_unsigned_type_node
;
208 tree ptrdiff_type_node
;
210 tree unsigned_char_type_node
;
211 tree signed_char_type_node
;
213 tree wchar_type_node
;
214 tree signed_wchar_type_node
;
215 tree unsigned_wchar_type_node
;
217 tree wchar_decl_node
;
219 tree float_type_node
;
220 tree double_type_node
;
221 tree long_double_type_node
;
223 tree complex_integer_type_node
;
224 tree complex_float_type_node
;
225 tree complex_double_type_node
;
226 tree complex_long_double_type_node
;
228 tree intQI_type_node
;
229 tree intHI_type_node
;
230 tree intSI_type_node
;
231 tree intDI_type_node
;
232 tree intTI_type_node
;
234 tree unsigned_intQI_type_node
;
235 tree unsigned_intHI_type_node
;
236 tree unsigned_intSI_type_node
;
237 tree unsigned_intDI_type_node
;
238 tree unsigned_intTI_type_node
;
240 tree java_byte_type_node
;
241 tree java_short_type_node
;
242 tree java_int_type_node
;
243 tree java_long_type_node
;
244 tree java_float_type_node
;
245 tree java_double_type_node
;
246 tree java_char_type_node
;
247 tree java_boolean_type_node
;
249 /* A VOID_TYPE node, and the same, packaged in a TREE_LIST. */
251 tree void_type_node
, void_list_node
;
254 /* Nodes for types `void *' and `const void *'. */
257 tree const_ptr_type_node
;
259 /* Nodes for types `char *' and `const char *'. */
261 tree string_type_node
, const_string_type_node
;
263 /* Type `char[256]' or something like it.
264 Used when an array of char is needed and the size is irrelevant. */
266 tree char_array_type_node
;
268 /* Type `int[256]' or something like it.
269 Used when an array of int needed and the size is irrelevant. */
271 tree int_array_type_node
;
273 /* Type `wchar_t[256]' or something like it.
274 Used when a wide string literal is created. */
276 tree wchar_array_type_node
;
278 /* The bool data type, and constants */
279 tree boolean_type_node
, boolean_true_node
, boolean_false_node
;
281 /* Type `int ()' -- used for implicit declaration of functions. */
283 tree default_function_type
;
285 /* Function types `double (double)' and `double (double, double)', etc. */
287 static tree double_ftype_double
, double_ftype_double_double
;
288 static tree int_ftype_int
, long_ftype_long
;
289 static tree float_ftype_float
;
290 static tree ldouble_ftype_ldouble
;
292 /* Function type `int (const void *, const void *, size_t)' */
293 static tree int_ftype_cptr_cptr_sizet
;
296 tree vtable_entry_type
;
297 tree delta_type_node
;
299 /* Old rtti stuff. */
300 tree __baselist_desc_type_node
;
301 tree __i_desc_type_node
, __m_desc_type_node
;
302 tree __t_desc_array_type
, __i_desc_array_type
, __m_desc_array_type
;
304 tree __t_desc_type_node
;
306 tree __tp_desc_type_node
;
308 tree __access_mode_type_node
;
309 tree __bltn_desc_type_node
, __user_desc_type_node
, __class_desc_type_node
;
310 tree __ptr_desc_type_node
, __attr_desc_type_node
, __func_desc_type_node
;
311 tree __ptmf_desc_type_node
, __ptmd_desc_type_node
;
313 /* Not needed yet? May be needed one day? */
314 tree __bltn_desc_array_type
, __user_desc_array_type
, __class_desc_array_type
;
315 tree __ptr_desc_array_type
, __attr_dec_array_type
, __func_desc_array_type
;
316 tree __ptmf_desc_array_type
, __ptmd_desc_array_type
;
319 /* Indicates that there is a type value in some namespace, although
320 that is not necessarily in scope at the moment. */
322 static tree global_type_node
;
324 tree class_star_type_node
;
325 tree class_type_node
, record_type_node
, union_type_node
, enum_type_node
;
326 tree unknown_type_node
;
327 tree opaque_type_node
, signature_type_node
;
328 tree sigtable_entry_type
;
330 /* Array type `vtable_entry_type[]' */
337 /* Expect only namespace names now. */
338 static int only_namespace_names
;
340 /* In a destructor, the point at which all derived class destroying
341 has been done, just before any base class destroying will be done. */
345 /* In a destructor, the last insn emitted after the start of the
346 function and the parms. */
348 static rtx last_dtor_insn
;
350 /* In a constructor, the last insn emitted after the start of the
351 function and the parms, the exception specification and any
352 function-try-block. The constructor initializers are emitted after
355 static rtx last_parm_cleanup_insn
;
357 /* In a constructor, the point at which we are ready to return
358 the pointer to the initialized object. */
362 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
363 one that the user will declare, but sufficient to be called
364 by routines that want to abort the program. */
368 extern rtx cleanup_label
, return_label
;
370 /* If original DECL_RESULT of current function was a register,
371 but due to being an addressable named return value, would up
372 on the stack, this variable holds the named return value's
373 original location. */
374 static rtx original_result_rtx
;
376 /* Sequence of insns which represents base initialization. */
379 /* C++: Keep these around to reduce calls to `get_identifier'.
380 Identifiers for `this' in member functions and the auto-delete
381 parameter for destructors. */
382 tree this_identifier
, in_charge_identifier
;
383 tree ctor_identifier
, dtor_identifier
;
384 /* Used in pointer to member functions, in vtables, and in sigtables. */
385 tree pfn_identifier
, index_identifier
, delta_identifier
, delta2_identifier
;
386 tree pfn_or_delta2_identifier
, tag_identifier
;
387 tree vt_off_identifier
;
389 struct named_label_list
391 struct binding_level
*binding_level
;
394 char *filename_o_goto
;
396 struct named_label_list
*next
;
399 /* A list (chain of TREE_LIST nodes) of named label uses.
400 The TREE_PURPOSE field is the list of variables defined
401 in the label's scope defined at the point of use.
402 The TREE_VALUE field is the LABEL_DECL used.
403 The TREE_TYPE field holds `current_binding_level' at the
404 point of the label's use.
406 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
408 Look at the pretty struct named_label_list. See the pretty struct
409 with the pretty named fields that describe what they do. See the
410 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
412 Used only for jumps to as-yet undefined labels, since
413 jumps to defined labels can have their validity checked
416 static struct named_label_list
*named_label_uses
= NULL
;
418 /* A list of objects which have constructors or destructors
419 which reside in the global scope. The decl is stored in
420 the TREE_VALUE slot and the initializer is stored
421 in the TREE_PURPOSE slot. */
422 tree static_aggregates
;
426 /* Two expressions that are constants with value zero.
427 The first is of type `int', the second of type `void *'. */
429 tree integer_zero_node
;
430 tree null_pointer_node
;
432 /* The value for __null (NULL), namely, a zero of an integer type with
433 the same number of bits as a pointer. */
436 /* A node for the integer constants 1, 2, and 3. */
438 tree integer_one_node
, integer_two_node
, integer_three_node
;
440 /* While defining an enum type, this is 1 plus the last enumerator
443 static tree enum_next_value
;
445 /* Nonzero means that there was overflow computing enum_next_value. */
447 static int enum_overflow
;
449 /* Parsing a function declarator leaves a list of parameter names
450 or a chain or parameter decls here. */
452 tree last_function_parms
;
454 /* Parsing a function declarator leaves here a chain of structure
455 and enum types declared in the parmlist. */
457 static tree last_function_parm_tags
;
459 /* After parsing the declarator that starts a function definition,
460 `start_function' puts here the list of parameter names or chain of decls.
461 `store_parm_decls' finds it here. */
463 static tree current_function_parms
;
465 /* Similar, for last_function_parm_tags. */
466 static tree current_function_parm_tags
;
468 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
469 that have names. Here so we can clear out their names' definitions
470 at the end of the function. */
472 static tree named_labels
;
474 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
476 static tree shadowed_labels
;
478 /* The FUNCTION_DECL for the function currently being compiled,
479 or 0 if between functions. */
480 tree current_function_decl
;
482 /* Set to 0 at beginning of a function definition, set to 1 if
483 a return statement that specifies a return value is seen. */
485 int current_function_returns_value
;
487 /* Set to 0 at beginning of a function definition, set to 1 if
488 a return statement with no argument is seen. */
490 int current_function_returns_null
;
492 /* Set to 0 at beginning of a function definition, and whenever
493 a label (case or named) is defined. Set to value of expression
494 returned from function when that value can be transformed into
495 a named return value. */
497 tree current_function_return_value
;
499 /* Set to nonzero by `grokdeclarator' for a function
500 whose return type is defaulted, if warnings for this are desired. */
502 static int warn_about_return_type
;
504 /* Nonzero means give `double' the same size as `float'. */
506 extern int flag_short_double
;
508 /* Nonzero means don't recognize any builtin functions. */
510 extern int flag_no_builtin
;
512 /* Nonzero means don't recognize the non-ANSI builtin functions.
515 extern int flag_no_nonansi_builtin
;
517 /* Nonzero means enable obscure ANSI features and disable GNU extensions
518 that might cause ANSI-compliant code to be miscompiled. */
520 extern int flag_ansi
;
522 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
524 extern int flag_huge_objects
;
526 /* Nonzero if we want to conserve space in the .o files. We do this
527 by putting uninitialized data and runtime initialized data into
528 .common instead of .data at the expense of not flagging multiple
530 extern int flag_conserve_space
;
532 /* Pointers to the base and current top of the language name stack. */
534 extern tree
*current_lang_base
, *current_lang_stack
;
536 /* C and C++ flags are in decl2.c. */
538 /* Set to 0 at beginning of a constructor, set to 1
539 if that function does an allocation before referencing its
540 instance variable. */
541 static int current_function_assigns_this
;
542 int current_function_just_assigned_this
;
544 /* Set to 0 at beginning of a function. Set non-zero when
545 store_parm_decls is called. Don't call store_parm_decls
546 if this flag is non-zero! */
547 int current_function_parms_stored
;
549 /* Flag used when debugging spew.c */
551 extern int spew_debug
;
553 /* This is a copy of the class_shadowed list of the previous class binding
554 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
555 when entering another class scope (i.e. a cache miss). */
556 extern tree previous_class_values
;
558 /* A expression of value 0 with the same precision as a sizetype
560 tree signed_size_zero_node
;
563 /* Allocate a level of searching. */
567 push_decl_level (stack
, obstack
)
568 struct stack_level
*stack
;
569 struct obstack
*obstack
;
571 struct stack_level tem
;
574 return push_stack_level (obstack
, (char *)&tem
, sizeof (tem
));
577 /* For each binding contour we allocate a binding_level structure
578 which records the names defined in that contour.
581 1) one for each function definition,
582 where internal declarations of the parameters appear.
583 2) one for each compound statement,
584 to record its declarations.
586 The current meaning of a name can be found by searching the levels
587 from the current one out to the global one.
589 Off to the side, may be the class_binding_level. This exists only
590 to catch class-local declarations. It is otherwise nonexistent.
592 Also there may be binding levels that catch cleanups that must be
593 run when exceptions occur. */
595 /* Note that the information in the `names' component of the global contour
596 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
600 /* A chain of _DECL nodes for all variables, constants, functions,
601 and typedef types. These are in the reverse of the order
605 /* A list of structure, union and enum definitions, for looking up
607 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
608 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
609 or ENUMERAL_TYPE node.
611 C++: the TREE_VALUE nodes can be simple types for
612 component_bindings. */
615 /* A list of USING_DECL nodes. */
618 /* A list of used namespaces. PURPOSE is the namespace,
619 VALUE the common ancestor with this binding_level's namespace. */
620 tree using_directives
;
622 /* For each level, a list of shadowed outer-level local definitions
623 to be restored when this level is popped.
624 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
625 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
628 /* Same, for IDENTIFIER_CLASS_VALUE. */
631 /* Same, for IDENTIFIER_TYPE_VALUE. */
634 /* For each level (except not the global one),
635 a chain of BLOCK nodes for all the levels
636 that were entered and exited one level down. */
639 /* The BLOCK node for this level, if one has been preallocated.
640 If 0, the BLOCK is allocated (if needed) when the level is popped. */
643 /* The binding level which this one is contained in (inherits from). */
644 struct binding_level
*level_chain
;
646 /* List of decls in `names' that have incomplete
647 structure or union types. */
650 /* List of VAR_DECLS saved from a previous for statement.
651 These would be dead in ANSI-conforming code, but might
652 be referenced in ARM-era code. */
653 tree dead_vars_from_for
;
655 /* 1 for the level that holds the parameters of a function.
656 2 for the level that holds a class declaration.
657 3 for levels that hold parameter declarations. */
658 unsigned parm_flag
: 4;
660 /* 1 means make a BLOCK for this level regardless of all else.
661 2 for temporary binding contours created by the compiler. */
664 /* Nonzero if this level "doesn't exist" for tags. */
665 unsigned tag_transparent
: 1;
667 /* Nonzero if this level can safely have additional
668 cleanup-needing variables added to it. */
669 unsigned more_cleanups_ok
: 1;
670 unsigned have_cleanups
: 1;
672 /* Nonzero if this level is for storing the decls for template
673 parameters and generic decls; these decls will be discarded and
674 replaced with a TEMPLATE_DECL. */
675 unsigned pseudo_global
: 1;
677 /* This is set for a namespace binding level. */
678 unsigned namespace_p
: 1;
680 /* True if this level is that of a for-statement where we need to
681 worry about ambiguous (ARM or ANSI) scope rules. */
682 unsigned is_for_scope
: 1;
684 /* Two bits left for this word. */
686 #if defined(DEBUG_CP_BINDING_LEVELS)
687 /* Binding depth at which this level began. */
688 unsigned binding_depth
;
689 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
692 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
694 /* The (non-class) binding level currently in effect. */
696 static struct binding_level
*current_binding_level
;
698 /* The binding level of the current class, if any. */
700 static struct binding_level
*class_binding_level
;
702 /* The current (class or non-class) binding level currently in effect. */
704 #define inner_binding_level \
705 (class_binding_level ? class_binding_level : current_binding_level)
707 /* A chain of binding_level structures awaiting reuse. */
709 static struct binding_level
*free_binding_level
;
711 /* The outermost binding level, for names of file scope.
712 This is created when the compiler is started and exists
713 through the entire run. */
715 static struct binding_level
*global_binding_level
;
717 /* Binding level structures are initialized by copying this one. */
719 static struct binding_level clear_binding_level
;
721 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
723 static int keep_next_level_flag
;
725 #if defined(DEBUG_CP_BINDING_LEVELS)
726 static int binding_depth
= 0;
727 static int is_class_level
= 0;
734 for (i
= 0; i
< binding_depth
*2; i
++)
737 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
739 static tree pushdecl_with_scope
PROTO((tree
, struct binding_level
*));
742 push_binding_level (newlevel
, tag_transparent
, keep
)
743 struct binding_level
*newlevel
;
744 int tag_transparent
, keep
;
746 /* Add this level to the front of the chain (stack) of levels that
748 *newlevel
= clear_binding_level
;
749 if (class_binding_level
)
751 newlevel
->level_chain
= class_binding_level
;
752 class_binding_level
= (struct binding_level
*)0;
756 newlevel
->level_chain
= current_binding_level
;
758 current_binding_level
= newlevel
;
759 newlevel
->tag_transparent
= tag_transparent
;
760 newlevel
->more_cleanups_ok
= 1;
761 newlevel
->keep
= keep
;
762 #if defined(DEBUG_CP_BINDING_LEVELS)
763 newlevel
->binding_depth
= binding_depth
;
765 fprintf (stderr
, "push %s level 0x%08x line %d\n",
766 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
769 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
775 if (class_binding_level
)
776 current_binding_level
= class_binding_level
;
778 if (global_binding_level
)
780 /* Cannot pop a level, if there are none left to pop. */
781 if (current_binding_level
== global_binding_level
)
782 my_friendly_abort (123);
784 /* Pop the current level, and free the structure for reuse. */
785 #if defined(DEBUG_CP_BINDING_LEVELS)
788 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
789 (is_class_level
) ? "class" : "block",
790 current_binding_level
, lineno
);
791 if (is_class_level
!= (current_binding_level
== class_binding_level
))
794 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
797 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
799 register struct binding_level
*level
= current_binding_level
;
800 current_binding_level
= current_binding_level
->level_chain
;
801 level
->level_chain
= free_binding_level
;
802 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
803 if (level
->binding_depth
!= binding_depth
)
805 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
806 free_binding_level
= level
;
808 class_binding_level
= current_binding_level
;
809 if (class_binding_level
->parm_flag
!= 2)
810 class_binding_level
= 0;
811 while (current_binding_level
->parm_flag
== 2)
812 current_binding_level
= current_binding_level
->level_chain
;
817 suspend_binding_level ()
819 if (class_binding_level
)
820 current_binding_level
= class_binding_level
;
822 if (global_binding_level
)
824 /* Cannot suspend a level, if there are none left to suspend. */
825 if (current_binding_level
== global_binding_level
)
826 my_friendly_abort (123);
828 /* Suspend the current level. */
829 #if defined(DEBUG_CP_BINDING_LEVELS)
832 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
833 (is_class_level
) ? "class" : "block",
834 current_binding_level
, lineno
);
835 if (is_class_level
!= (current_binding_level
== class_binding_level
))
838 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
841 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
843 current_binding_level
= current_binding_level
->level_chain
;
844 class_binding_level
= current_binding_level
;
845 if (class_binding_level
->parm_flag
!= 2)
846 class_binding_level
= 0;
847 while (current_binding_level
->parm_flag
== 2)
848 current_binding_level
= current_binding_level
->level_chain
;
853 resume_binding_level (b
)
854 struct binding_level
*b
;
856 /* Resuming binding levels is meant only for namespaces,
857 and those cannot nest into classes. */
858 my_friendly_assert(!class_binding_level
, 386);
859 /* Also, resuming a non-directly nested namespace is a no-no. */
860 my_friendly_assert(b
->level_chain
== current_binding_level
, 386);
861 current_binding_level
= b
;
862 #if defined(DEBUG_CP_BINDING_LEVELS)
863 b
->binding_depth
= binding_depth
;
865 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
866 (is_class_level
) ? "class" : "block", b
, lineno
);
869 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
872 /* Create a new `struct binding_level'. */
875 struct binding_level
*
876 make_binding_level ()
879 return (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
882 /* Nonzero if we are currently in the global binding level. */
887 return current_binding_level
== global_binding_level
;
890 /* Nonzero if we are currently in a toplevel binding level. This
891 means either the global binding level or a namespace in a toplevel
893 Since there are no non-toplevel namespace levels, this really
894 means any namespace or pseudo-global level. */
897 toplevel_bindings_p ()
899 return current_binding_level
->namespace_p
900 || current_binding_level
->pseudo_global
;
903 /* Nonzero if this is a namespace scope. */
906 namespace_bindings_p ()
908 return current_binding_level
->namespace_p
;
914 keep_next_level_flag
= 1;
917 /* Nonzero if the current level needs to have a BLOCK made. */
922 return (current_binding_level
->blocks
!= NULL_TREE
923 || current_binding_level
->keep
924 || current_binding_level
->names
!= NULL_TREE
925 || (current_binding_level
->tags
!= NULL_TREE
926 && !current_binding_level
->tag_transparent
));
929 /* Identify this binding level as a level of parameters. */
932 declare_parm_level ()
934 current_binding_level
->parm_flag
= 1;
938 declare_pseudo_global_level ()
940 current_binding_level
->pseudo_global
= 1;
944 declare_namespace_level ()
946 current_binding_level
->namespace_p
= 1;
950 pseudo_global_level_p ()
952 return current_binding_level
->pseudo_global
;
956 set_class_shadows (shadows
)
959 class_binding_level
->class_shadowed
= shadows
;
962 /* Enter a new binding level.
963 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
964 not for that of tags. */
967 pushlevel (tag_transparent
)
970 register struct binding_level
*newlevel
= NULL_BINDING_LEVEL
;
972 /* If this is the top level of a function,
973 just make sure that NAMED_LABELS is 0.
974 They should have been set to 0 at the end of the previous function. */
976 if (current_binding_level
== global_binding_level
)
977 my_friendly_assert (named_labels
== NULL_TREE
, 134);
979 /* Reuse or create a struct for this binding level. */
981 #if defined(DEBUG_CP_BINDING_LEVELS)
983 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
984 if (free_binding_level
)
985 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
987 newlevel
= free_binding_level
;
988 free_binding_level
= free_binding_level
->level_chain
;
992 newlevel
= make_binding_level ();
995 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
996 GNU_xref_start_scope ((HOST_WIDE_INT
) newlevel
);
997 keep_next_level_flag
= 0;
1001 note_level_for_for ()
1003 current_binding_level
->is_for_scope
= 1;
1007 pushlevel_temporary (tag_transparent
)
1008 int tag_transparent
;
1010 pushlevel (tag_transparent
);
1011 current_binding_level
->keep
= 2;
1014 /* Note we don't call push_momentary() here. Otherwise, it would cause
1015 cleanups to be allocated on the momentary obstack, and they will be
1016 overwritten by the next statement. */
1018 expand_start_bindings (0);
1021 /* Exit a binding level.
1022 Pop the level off, and restore the state of the identifier-decl mappings
1023 that were in effect when this level was entered.
1025 If KEEP == 1, this level had explicit declarations, so
1026 and create a "block" (a BLOCK node) for the level
1027 to record its declarations and subblocks for symbol table output.
1029 If KEEP == 2, this level's subblocks go to the front,
1030 not the back of the current binding level. This happens,
1031 for instance, when code for constructors and destructors
1032 need to generate code at the end of a function which must
1033 be moved up to the front of the function.
1035 If FUNCTIONBODY is nonzero, this level is the body of a function,
1036 so create a block as if KEEP were set and also clear out all
1039 If REVERSE is nonzero, reverse the order of decls before putting
1040 them into the BLOCK. */
1043 poplevel (keep
, reverse
, functionbody
)
1049 /* The chain of decls was accumulated in reverse order.
1050 Put it into forward order, just for cleanliness. */
1052 int tmp
= functionbody
;
1053 int real_functionbody
= current_binding_level
->keep
== 2
1054 ? ((functionbody
= 0), tmp
) : functionbody
;
1055 tree tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
1056 tree subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
1057 tree block
= NULL_TREE
;
1059 int block_previously_created
;
1061 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
1062 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
1063 current_binding_level
->parm_flag
,
1064 current_binding_level
->keep
);
1066 if (current_binding_level
->keep
== 1)
1069 /* Get the decls in the order they were written.
1070 Usually current_binding_level->names is in reverse order.
1071 But parameter decls were previously put in forward order. */
1074 current_binding_level
->names
1075 = decls
= nreverse (current_binding_level
->names
);
1077 decls
= current_binding_level
->names
;
1079 /* Output any nested inline functions within this block
1080 if they weren't already output. */
1082 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1083 if (TREE_CODE (decl
) == FUNCTION_DECL
1084 && ! TREE_ASM_WRITTEN (decl
)
1085 && DECL_INITIAL (decl
) != NULL_TREE
1086 && TREE_ADDRESSABLE (decl
)
1087 && decl_function_context (decl
) == current_function_decl
)
1089 /* If this decl was copied from a file-scope decl
1090 on account of a block-scope extern decl,
1091 propagate TREE_ADDRESSABLE to the file-scope decl. */
1092 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1093 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1096 push_function_context ();
1097 output_inline_function (decl
);
1098 pop_function_context ();
1102 /* If there were any declarations or structure tags in that level,
1103 or if this level is a function body,
1104 create a BLOCK to record them for the life of this function. */
1107 block_previously_created
= (current_binding_level
->this_block
!= NULL_TREE
);
1108 if (block_previously_created
)
1109 block
= current_binding_level
->this_block
;
1110 else if (keep
== 1 || functionbody
)
1111 block
= make_node (BLOCK
);
1112 if (block
!= NULL_TREE
)
1114 if (block_previously_created
)
1116 if (decls
|| tags
|| subblocks
)
1118 if (BLOCK_VARS (block
) || BLOCK_TYPE_TAGS (block
))
1120 warning ("internal compiler error: debugging info corrupted");
1122 BLOCK_VARS (block
) = decls
;
1123 BLOCK_TYPE_TAGS (block
) = tags
;
1125 /* We can have previous subblocks and new subblocks when
1126 doing fixup_gotos with complex cleanups. We chain the new
1127 subblocks onto the end of any pre-existing subblocks. */
1128 BLOCK_SUBBLOCKS (block
) = chainon (BLOCK_SUBBLOCKS (block
),
1131 /* If we created the block earlier on, and we are just
1132 diddling it now, then it already should have a proper
1133 BLOCK_END_NOTE value associated with it. */
1137 BLOCK_VARS (block
) = decls
;
1138 BLOCK_TYPE_TAGS (block
) = tags
;
1139 BLOCK_SUBBLOCKS (block
) = subblocks
;
1140 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1141 remember_end_note (block
);
1145 /* In each subblock, record that this is its superior. */
1148 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1149 BLOCK_SUPERCONTEXT (link
) = block
;
1151 /* Clear out the meanings of the local variables of this level. */
1153 if (current_binding_level
->is_for_scope
&& flag_new_for_scope
== 1)
1155 struct binding_level
*outer
= current_binding_level
->level_chain
;
1156 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1158 if (TREE_CODE (link
) == VAR_DECL
)
1159 DECL_DEAD_FOR_LOCAL (link
) = 1;
1161 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1164 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1165 'for' scoping semantics. */
1167 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1169 tree id
= TREE_PURPOSE (link
);
1170 tree decl
= IDENTIFIER_LOCAL_VALUE (id
);
1172 if (decl
&& DECL_DEAD_FOR_LOCAL (decl
))
1174 /* In this case keep the dead for-decl visible,
1175 but remember what (if anything) it shadowed. */
1176 DECL_SHADOWED_FOR_VAR (decl
) = TREE_VALUE (link
);
1177 TREE_CHAIN (decl
) = outer
->dead_vars_from_for
;
1178 outer
->dead_vars_from_for
= decl
;
1181 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VALUE (link
);
1184 else /* Not special for scope. */
1186 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1188 if (DECL_NAME (link
) != NULL_TREE
)
1190 /* If the ident. was used or addressed via a local extern decl,
1191 don't forget that fact. */
1192 if (DECL_EXTERNAL (link
))
1194 if (TREE_USED (link
))
1195 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1196 if (TREE_ADDRESSABLE (link
))
1197 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1199 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1203 /* Restore all name-meanings of the outer levels
1204 that were shadowed by this level. */
1206 for (link
= current_binding_level
->shadowed
;
1207 link
; link
= TREE_CHAIN (link
))
1208 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1210 /* We first restore the regular decls and *then* the dead_vars_from_for
1211 to handle this case:
1215 for (int i; ; ) { ...} // i#2
1219 In this case, we want remove the binding for i#3, restoring
1220 that of i#2. Then we want to remove the binding for i#2,
1221 and restore that of i#1. */
1223 link
= current_binding_level
->dead_vars_from_for
;
1224 for (; link
!= NULL_TREE
; link
= TREE_CHAIN (link
))
1226 tree id
= DECL_NAME (link
);
1227 if (IDENTIFIER_LOCAL_VALUE (id
) == link
)
1228 IDENTIFIER_LOCAL_VALUE (id
) = DECL_SHADOWED_FOR_VAR (link
);
1231 for (link
= current_binding_level
->class_shadowed
;
1232 link
; link
= TREE_CHAIN (link
))
1233 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1234 for (link
= current_binding_level
->type_shadowed
;
1235 link
; link
= TREE_CHAIN (link
))
1236 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
1239 /* If the level being exited is the top level of a function,
1240 check over all the labels. */
1244 /* If this is the top level block of a function,
1245 the vars are the function's parameters.
1246 Don't leave them in the BLOCK because they are
1247 found in the FUNCTION_DECL instead. */
1249 BLOCK_VARS (block
) = 0;
1251 /* Clear out the definitions of all label names,
1252 since their scopes end here. */
1254 for (link
= named_labels
; link
; link
= TREE_CHAIN (link
))
1256 register tree label
= TREE_VALUE (link
);
1258 if (DECL_INITIAL (label
) == NULL_TREE
)
1260 cp_error_at ("label `%D' used but not defined", label
);
1261 /* Avoid crashing later. */
1262 define_label (input_filename
, 1, DECL_NAME (label
));
1264 else if (warn_unused
&& !TREE_USED (label
))
1265 cp_warning_at ("label `%D' defined but not used", label
);
1266 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), NULL_TREE
);
1268 /* Put the labels into the "variables" of the
1269 top-level block, so debugger can see them. */
1270 TREE_CHAIN (label
) = BLOCK_VARS (block
);
1271 BLOCK_VARS (block
) = label
;
1274 named_labels
= NULL_TREE
;
1277 /* Any uses of undefined labels now operate under constraints
1278 of next binding contour. */
1280 struct binding_level
*level_chain
;
1281 level_chain
= current_binding_level
->level_chain
;
1284 struct named_label_list
*labels
;
1285 for (labels
= named_label_uses
; labels
; labels
= labels
->next
)
1286 if (labels
->binding_level
== current_binding_level
)
1288 labels
->binding_level
= level_chain
;
1289 labels
->names_in_scope
= level_chain
->names
;
1294 tmp
= current_binding_level
->keep
;
1296 pop_binding_level ();
1298 DECL_INITIAL (current_function_decl
) = block
;
1301 if (!block_previously_created
)
1302 current_binding_level
->blocks
1303 = chainon (current_binding_level
->blocks
, block
);
1305 /* If we did not make a block for the level just exited,
1306 any blocks made for inner levels
1307 (since they cannot be recorded as subblocks in that level)
1308 must be carried forward so they will later become subblocks
1309 of something else. */
1313 current_binding_level
->blocks
1314 = chainon (subblocks
, current_binding_level
->blocks
);
1316 current_binding_level
->blocks
1317 = chainon (current_binding_level
->blocks
, subblocks
);
1320 /* Take care of compiler's internal binding structures. */
1323 expand_end_bindings (getdecls (), keep
, 1);
1324 /* Each and every BLOCK node created here in `poplevel' is important
1325 (e.g. for proper debugging information) so if we created one
1326 earlier, mark it as "used". */
1328 TREE_USED (block
) = 1;
1329 block
= poplevel (keep
, reverse
, real_functionbody
);
1332 /* Each and every BLOCK node created here in `poplevel' is important
1333 (e.g. for proper debugging information) so if we created one
1334 earlier, mark it as "used". */
1336 TREE_USED (block
) = 1;
1340 /* Delete the node BLOCK from the current binding level.
1341 This is used for the block inside a stmt expr ({...})
1342 so that the block can be reinserted where appropriate. */
1345 delete_block (block
)
1349 if (current_binding_level
->blocks
== block
)
1350 current_binding_level
->blocks
= TREE_CHAIN (block
);
1351 for (t
= current_binding_level
->blocks
; t
;)
1353 if (TREE_CHAIN (t
) == block
)
1354 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1358 TREE_CHAIN (block
) = NULL_TREE
;
1359 /* Clear TREE_USED which is always set by poplevel.
1360 The flag is set again if insert_block is called. */
1361 TREE_USED (block
) = 0;
1364 /* Insert BLOCK at the end of the list of subblocks of the
1365 current binding level. This is used when a BIND_EXPR is expanded,
1366 to handle the BLOCK node inside the BIND_EXPR. */
1369 insert_block (block
)
1372 TREE_USED (block
) = 1;
1373 current_binding_level
->blocks
1374 = chainon (current_binding_level
->blocks
, block
);
1377 /* Set the BLOCK node for the innermost scope
1378 (the one we are currently in). */
1382 register tree block
;
1384 current_binding_level
->this_block
= block
;
1387 /* Do a pushlevel for class declarations. */
1392 register struct binding_level
*newlevel
;
1394 /* Reuse or create a struct for this binding level. */
1395 #if defined(DEBUG_CP_BINDING_LEVELS)
1397 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1398 if (free_binding_level
)
1399 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1401 newlevel
= free_binding_level
;
1402 free_binding_level
= free_binding_level
->level_chain
;
1406 newlevel
= make_binding_level ();
1409 #if defined(DEBUG_CP_BINDING_LEVELS)
1411 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1413 push_binding_level (newlevel
, 0, 0);
1415 decl_stack
= push_decl_level (decl_stack
, &decl_obstack
);
1416 class_binding_level
= current_binding_level
;
1417 class_binding_level
->parm_flag
= 2;
1418 /* We have just pushed into a new binding level. Now, fake out the rest
1419 of the compiler. Set the `current_binding_level' back to point to
1420 the most closely containing non-class binding level. */
1423 current_binding_level
= current_binding_level
->level_chain
;
1425 while (current_binding_level
->parm_flag
== 2);
1428 /* ...and a poplevel for class declarations. FORCE is used to force
1429 clearing out of CLASS_VALUEs after a class definition. */
1432 poplevel_class (force
)
1435 register struct binding_level
*level
= class_binding_level
;
1436 tree block
= NULL_TREE
;
1439 my_friendly_assert (level
!= 0, 354);
1441 decl_stack
= pop_stack_level (decl_stack
);
1442 for (shadowed
= level
->shadowed
; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
1443 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1444 /* If we're leaving a toplevel class, don't bother to do the setting
1445 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1446 shouldn't even be used when current_class_type isn't set, and second,
1447 if we don't touch it here, we're able to use the cache effect if the
1448 next time we're entering a class scope, it is the same class. */
1449 if (current_class_depth
!= 1 || force
)
1450 for (shadowed
= level
->class_shadowed
;
1452 shadowed
= TREE_CHAIN (shadowed
))
1453 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1455 /* Remember to save what IDENTIFIER's were bound in this scope so we
1456 can recover from cache misses. */
1458 previous_class_type
= current_class_type
;
1459 previous_class_values
= class_binding_level
->class_shadowed
;
1461 for (shadowed
= level
->type_shadowed
;
1463 shadowed
= TREE_CHAIN (shadowed
))
1464 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
), TREE_VALUE (shadowed
));
1466 GNU_xref_end_scope ((HOST_WIDE_INT
) class_binding_level
,
1467 (HOST_WIDE_INT
) class_binding_level
->level_chain
,
1468 class_binding_level
->parm_flag
,
1469 class_binding_level
->keep
);
1471 if (class_binding_level
->parm_flag
!= 2)
1472 class_binding_level
= (struct binding_level
*)0;
1474 /* Now, pop out of the binding level which we created up in the
1475 `pushlevel_class' routine. */
1476 #if defined(DEBUG_CP_BINDING_LEVELS)
1478 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1480 pop_binding_level ();
1485 /* For debugging. */
1486 static int no_print_functions
= 0;
1487 static int no_print_builtins
= 0;
1490 print_binding_level (lvl
)
1491 struct binding_level
*lvl
;
1495 fprintf (stderr
, " blocks=");
1496 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1497 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1498 list_length (lvl
->incomplete
), lvl
->parm_flag
, lvl
->keep
);
1499 if (lvl
->tag_transparent
)
1500 fprintf (stderr
, " tag-transparent");
1501 if (lvl
->more_cleanups_ok
)
1502 fprintf (stderr
, " more-cleanups-ok");
1503 if (lvl
->have_cleanups
)
1504 fprintf (stderr
, " have-cleanups");
1505 fprintf (stderr
, "\n");
1508 fprintf (stderr
, " names:\t");
1509 /* We can probably fit 3 names to a line? */
1510 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
1512 if (no_print_functions
&& (TREE_CODE (t
) == FUNCTION_DECL
))
1514 if (no_print_builtins
1515 && (TREE_CODE (t
) == TYPE_DECL
)
1516 && (!strcmp (DECL_SOURCE_FILE (t
),"<built-in>")))
1519 /* Function decls tend to have longer names. */
1520 if (TREE_CODE (t
) == FUNCTION_DECL
)
1527 fprintf (stderr
, "\n\t");
1530 print_node_brief (stderr
, "", t
, 0);
1531 if (t
== error_mark_node
)
1535 fprintf (stderr
, "\n");
1539 fprintf (stderr
, " tags:\t");
1541 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
1543 if (TREE_PURPOSE (t
) == NULL_TREE
)
1545 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1552 fprintf (stderr
, "\n\t");
1555 if (TREE_PURPOSE (t
) == NULL_TREE
)
1557 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
1558 fprintf (stderr
, ">");
1560 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1561 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1564 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
1565 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1566 fprintf (stderr
, ">");
1570 fprintf (stderr
, "\n");
1574 fprintf (stderr
, " shadowed:");
1575 for (t
= lvl
->shadowed
; t
; t
= TREE_CHAIN (t
))
1577 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1579 fprintf (stderr
, "\n");
1581 if (lvl
->class_shadowed
)
1583 fprintf (stderr
, " class-shadowed:");
1584 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
1586 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1588 fprintf (stderr
, "\n");
1590 if (lvl
->type_shadowed
)
1592 fprintf (stderr
, " type-shadowed:");
1593 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1595 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1597 fprintf (stderr
, "\n");
1602 print_other_binding_stack (stack
)
1603 struct binding_level
*stack
;
1605 struct binding_level
*level
;
1606 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
1608 fprintf (stderr
, "binding level ");
1609 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
1610 fprintf (stderr
, "\n");
1611 print_binding_level (level
);
1616 print_binding_stack ()
1618 struct binding_level
*b
;
1619 fprintf (stderr
, "current_binding_level=");
1620 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
1621 fprintf (stderr
, "\nclass_binding_level=");
1622 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
1623 fprintf (stderr
, "\nglobal_binding_level=");
1624 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
1625 fprintf (stderr
, "\n");
1626 if (class_binding_level
)
1628 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
1629 if (b
== current_binding_level
)
1632 b
= class_binding_level
;
1634 b
= current_binding_level
;
1637 b
= current_binding_level
;
1638 print_other_binding_stack (b
);
1639 fprintf (stderr
, "global:\n");
1640 print_binding_level (global_binding_level
);
1643 /* Namespace binding access routines: The namespace_bindings field of
1644 the identifier is polymorphic, with three possible values:
1645 NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node
1646 indicating the BINDING_VALUE of global_namespace. */
1648 /* Check whether the a binding for the name to scope is known.
1649 Assumes that the bindings of the name are already a list
1650 of bindings. Returns the binding found, or NULL_TREE. */
1653 find_binding (name
, scope
)
1657 tree iter
, prev
= NULL_TREE
;
1659 scope
= ORIGINAL_NAMESPACE (scope
);
1661 for (iter
= IDENTIFIER_NAMESPACE_BINDINGS (name
); iter
;
1662 iter
= TREE_CHAIN (iter
))
1664 my_friendly_assert (TREE_CODE (iter
) == CPLUS_BINDING
, 374);
1665 if (BINDING_SCOPE (iter
) == scope
)
1667 /* Move binding found to the fron of the list, so
1668 subsequent lookups will find it faster. */
1671 TREE_CHAIN (prev
) = TREE_CHAIN (iter
);
1672 TREE_CHAIN (iter
) = IDENTIFIER_NAMESPACE_BINDINGS (name
);
1673 IDENTIFIER_NAMESPACE_BINDINGS (name
) = iter
;
1682 /* Always returns a binding for name in scope. If the
1683 namespace_bindings is not a list, convert it to one first.
1684 If no binding is found, make a new one. */
1687 binding_for_name (name
, scope
)
1691 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1694 scope
= ORIGINAL_NAMESPACE (scope
);
1696 if (b
&& TREE_CODE (b
) != CPLUS_BINDING
)
1698 /* Get rid of optimization for global scope. */
1699 IDENTIFIER_NAMESPACE_BINDINGS (name
) = NULL_TREE
;
1700 BINDING_VALUE (binding_for_name (name
, global_namespace
)) = b
;
1701 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1703 if (b
&& (result
= find_binding (name
, scope
)))
1705 /* Not found, make a new permanent one. */
1706 push_obstacks (&permanent_obstack
, &permanent_obstack
);
1707 result
= make_node (CPLUS_BINDING
);
1708 TREE_CHAIN (result
) = b
;
1709 IDENTIFIER_NAMESPACE_BINDINGS (name
) = result
;
1710 BINDING_SCOPE (result
) = scope
;
1711 BINDING_TYPE (result
) = NULL_TREE
;
1712 BINDING_VALUE (result
) = NULL_TREE
;
1717 /* Return the binding value for name in scope, considering that
1718 namespace_binding may or may not be a list of CPLUS_BINDINGS. */
1721 namespace_binding (name
, scope
)
1725 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1728 if (scope
== NULL_TREE
)
1729 scope
= global_namespace
;
1730 if (TREE_CODE (b
) != CPLUS_BINDING
)
1731 return (scope
== global_namespace
) ? b
: NULL_TREE
;
1732 name
= find_binding (name
,scope
);
1733 if (name
== NULL_TREE
)
1735 return BINDING_VALUE (name
);
1738 /* Set the binding value for name in scope. If modifying the binding
1739 of global_namespace is attempted, try to optimize it. */
1742 set_namespace_binding (name
, scope
, val
)
1749 if (scope
== NULL_TREE
)
1750 scope
= global_namespace
;
1752 if (scope
== global_namespace
)
1754 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
1755 if (b
== NULL_TREE
|| TREE_CODE (b
) != CPLUS_BINDING
)
1757 IDENTIFIER_NAMESPACE_BINDINGS (name
) = val
;
1761 b
= binding_for_name (name
, scope
);
1762 BINDING_VALUE (b
) = val
;
1765 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1766 select a name that is unique to this compilation unit. */
1769 push_namespace (name
)
1774 int implicit_use
= 0;
1776 if (!global_namespace
)
1778 /* This must be ::. */
1779 my_friendly_assert (name
== get_identifier ("::"), 377);
1784 /* The name of anonymous namespace is unique for the translation
1786 static tree anon_name
= NULL_TREE
;
1788 anon_name
= get_file_function_name ('N');
1790 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1792 /* Reopening anonymous namespace. */
1796 else if (current_namespace
== global_namespace
1797 && name
== DECL_NAME (std_node
))
1804 /* Check whether this is an extended namespace definition. */
1805 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
1806 if (d
!= NULL_TREE
&& TREE_CODE (d
) == NAMESPACE_DECL
)
1809 if (DECL_NAMESPACE_ALIAS (d
))
1811 cp_error ("namespace alias `%D' not allowed here, assuming `%D'",
1812 d
, DECL_NAMESPACE_ALIAS (d
));
1813 d
= DECL_NAMESPACE_ALIAS (d
);
1820 /* Make a new namespace, binding the name to it. */
1821 d
= build_lang_decl (NAMESPACE_DECL
, name
, void_type_node
);
1822 /* The global namespace is not pushed, and the global binding
1823 level is set elsewhere. */
1828 declare_namespace_level ();
1829 NAMESPACE_LEVEL (d
) = current_binding_level
;
1833 resume_binding_level (NAMESPACE_LEVEL (d
));
1836 do_using_directive (d
);
1837 /* Enter the name space. */
1838 current_namespace
= d
;
1841 /* Pop from the scope of the current namespace. */
1846 if (current_namespace
== global_namespace
)
1848 my_friendly_assert (in_std
>0, 980421);
1852 current_namespace
= CP_DECL_CONTEXT (current_namespace
);
1853 /* The binding level is not popped, as it might be re-opened later. */
1854 suspend_binding_level ();
1857 /* Concatenate the binding levels of all namespaces. */
1860 cat_namespace_levels()
1864 struct binding_level
*b
;
1866 last
= NAMESPACE_LEVEL (global_namespace
) -> names
;
1867 /* The nested namespaces appear in the names list of their ancestors. */
1868 for (current
= last
; current
; current
= TREE_CHAIN (current
))
1870 if (TREE_CODE (current
) != NAMESPACE_DECL
1871 || DECL_NAMESPACE_ALIAS (current
))
1873 if (!DECL_LANG_SPECIFIC (current
))
1876 my_friendly_assert (current
== std_node
, 393);
1879 b
= NAMESPACE_LEVEL (current
);
1880 while (TREE_CHAIN (last
))
1881 last
= TREE_CHAIN (last
);
1882 TREE_CHAIN (last
) = NAMESPACE_LEVEL (current
) -> names
;
1886 /* Subroutines for reverting temporarily to top-level for instantiation
1887 of templates and such. We actually need to clear out the class- and
1888 local-value slots of all identifiers, so that only the global values
1889 are at all visible. Simply setting current_binding_level to the global
1890 scope isn't enough, because more binding levels may be pushed. */
1891 struct saved_scope
{
1892 struct binding_level
*old_binding_level
;
1895 struct saved_scope
*prev
;
1896 tree class_name
, class_type
, function_decl
;
1897 struct binding_level
*class_bindings
;
1898 tree
*lang_base
, *lang_stack
, lang_name
;
1900 int minimal_parse_mode
;
1901 tree last_function_parms
;
1902 tree template_parms
;
1903 HOST_WIDE_INT processing_template_decl
;
1904 tree previous_class_type
, previous_class_values
;
1905 int processing_specialization
;
1906 int processing_explicit_instantiation
;
1908 static struct saved_scope
*current_saved_scope
;
1910 /* A chain of the binding vecs created by store_bindings. We create a
1911 whole bunch of these during compilation, on permanent_obstack, so we
1912 can't just throw them away. */
1913 static tree free_binding_vecs
;
1916 store_bindings (names
, old_bindings
)
1917 tree names
, old_bindings
;
1920 for (t
= names
; t
; t
= TREE_CHAIN (t
))
1922 tree binding
, t1
, id
;
1924 if (TREE_CODE (t
) == TREE_LIST
)
1925 id
= TREE_PURPOSE (t
);
1930 || (!IDENTIFIER_LOCAL_VALUE (id
)
1931 && !IDENTIFIER_CLASS_VALUE (id
)))
1934 for (t1
= old_bindings
; t1
; t1
= TREE_CHAIN (t1
))
1935 if (TREE_VEC_ELT (t1
, 0) == id
)
1938 if (free_binding_vecs
)
1940 binding
= free_binding_vecs
;
1941 free_binding_vecs
= TREE_CHAIN (free_binding_vecs
);
1944 binding
= make_tree_vec (4);
1948 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
1949 TREE_VEC_ELT (binding
, 0) = id
;
1950 TREE_VEC_ELT (binding
, 1) = REAL_IDENTIFIER_TYPE_VALUE (id
);
1951 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_LOCAL_VALUE (id
);
1952 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
1953 IDENTIFIER_LOCAL_VALUE (id
) = NULL_TREE
;
1954 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
1956 TREE_CHAIN (binding
) = old_bindings
;
1957 old_bindings
= binding
;
1961 return old_bindings
;
1965 maybe_push_to_top_level (pseudo
)
1968 extern int current_lang_stacksize
;
1969 struct saved_scope
*s
1970 = (struct saved_scope
*) xmalloc (sizeof (struct saved_scope
));
1971 struct binding_level
*b
= inner_binding_level
;
1972 tree old_bindings
= NULL_TREE
;
1974 if (current_function_decl
)
1975 push_cp_function_context (NULL_TREE
);
1977 if (previous_class_type
)
1978 old_bindings
= store_bindings (previous_class_values
, old_bindings
);
1980 /* Have to include global_binding_level, because class-level decls
1981 aren't listed anywhere useful. */
1982 for (; b
; b
= b
->level_chain
)
1986 /* Template IDs are inserted into the global level. If they were
1987 inserted into namespace level, finish_file wouldn't find them
1988 when doing pending instantiations. Therefore, don't stop at
1989 namespace level, but continue until :: . */
1990 if (b
== global_binding_level
|| (pseudo
&& b
->pseudo_global
))
1993 old_bindings
= store_bindings (b
->names
, old_bindings
);
1994 /* We also need to check class_shadowed to save class-level type
1995 bindings, since pushclass doesn't fill in b->names. */
1996 if (b
->parm_flag
== 2)
1997 old_bindings
= store_bindings (b
->class_shadowed
, old_bindings
);
1999 /* Unwind type-value slots back to top level. */
2000 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
2001 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
2004 s
->old_binding_level
= current_binding_level
;
2005 current_binding_level
= b
;
2007 s
->old_namespace
= current_namespace
;
2008 s
->class_name
= current_class_name
;
2009 s
->class_type
= current_class_type
;
2010 s
->function_decl
= current_function_decl
;
2011 s
->class_bindings
= class_binding_level
;
2012 s
->lang_stack
= current_lang_stack
;
2013 s
->lang_base
= current_lang_base
;
2014 s
->lang_stacksize
= current_lang_stacksize
;
2015 s
->lang_name
= current_lang_name
;
2016 s
->minimal_parse_mode
= minimal_parse_mode
;
2017 s
->last_function_parms
= last_function_parms
;
2018 s
->template_parms
= current_template_parms
;
2019 s
->processing_template_decl
= processing_template_decl
;
2020 s
->previous_class_type
= previous_class_type
;
2021 s
->previous_class_values
= previous_class_values
;
2022 s
->processing_specialization
= processing_specialization
;
2023 s
->processing_explicit_instantiation
= processing_explicit_instantiation
;
2025 current_class_name
= current_class_type
= NULL_TREE
;
2026 current_function_decl
= NULL_TREE
;
2027 class_binding_level
= (struct binding_level
*)0;
2028 current_lang_stacksize
= 10;
2029 current_lang_stack
= current_lang_base
2030 = (tree
*) xmalloc (current_lang_stacksize
* sizeof (tree
));
2031 current_lang_name
= lang_name_cplusplus
;
2032 strict_prototype
= strict_prototypes_lang_cplusplus
;
2033 named_labels
= NULL_TREE
;
2034 shadowed_labels
= NULL_TREE
;
2035 minimal_parse_mode
= 0;
2036 previous_class_type
= previous_class_values
= NULL_TREE
;
2037 processing_specialization
= 0;
2038 processing_explicit_instantiation
= 0;
2039 current_template_parms
= NULL_TREE
;
2040 processing_template_decl
= 0;
2041 current_namespace
= global_namespace
;
2043 s
->prev
= current_saved_scope
;
2044 s
->old_bindings
= old_bindings
;
2045 current_saved_scope
= s
;
2047 push_obstacks (&permanent_obstack
, &permanent_obstack
);
2051 push_to_top_level ()
2053 maybe_push_to_top_level (0);
2057 pop_from_top_level ()
2059 extern int current_lang_stacksize
;
2060 struct saved_scope
*s
= current_saved_scope
;
2063 /* Clear out class-level bindings cache. */
2064 if (previous_class_type
)
2067 previous_class_type
= NULL_TREE
;
2072 current_binding_level
= s
->old_binding_level
;
2073 current_saved_scope
= s
->prev
;
2074 for (t
= s
->old_bindings
; t
; )
2077 tree id
= TREE_VEC_ELT (t
, 0);
2080 SET_IDENTIFIER_TYPE_VALUE (id
, TREE_VEC_ELT (t
, 1));
2081 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VEC_ELT (t
, 2);
2082 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
2085 TREE_CHAIN (save
) = free_binding_vecs
;
2086 free_binding_vecs
= save
;
2088 current_namespace
= s
->old_namespace
;
2089 current_class_name
= s
->class_name
;
2090 current_class_type
= s
->class_type
;
2091 current_function_decl
= s
->function_decl
;
2092 class_binding_level
= s
->class_bindings
;
2093 free (current_lang_base
);
2094 current_lang_base
= s
->lang_base
;
2095 current_lang_stack
= s
->lang_stack
;
2096 current_lang_name
= s
->lang_name
;
2097 current_lang_stacksize
= s
->lang_stacksize
;
2098 if (current_lang_name
== lang_name_cplusplus
)
2099 strict_prototype
= strict_prototypes_lang_cplusplus
;
2100 else if (current_lang_name
== lang_name_c
)
2101 strict_prototype
= strict_prototypes_lang_c
;
2102 minimal_parse_mode
= s
->minimal_parse_mode
;
2103 last_function_parms
= s
->last_function_parms
;
2104 current_template_parms
= s
->template_parms
;
2105 processing_template_decl
= s
->processing_template_decl
;
2106 previous_class_type
= s
->previous_class_type
;
2107 previous_class_values
= s
->previous_class_values
;
2108 processing_specialization
= s
->processing_specialization
;
2109 processing_explicit_instantiation
= s
->processing_explicit_instantiation
;
2113 if (current_function_decl
)
2114 pop_cp_function_context (NULL_TREE
);
2117 /* Push a definition of struct, union or enum tag "name".
2118 into binding_level "b". "type" should be the type node,
2119 We assume that the tag "name" is not already defined.
2121 Note that the definition may really be just a forward reference.
2122 In that case, the TYPE_SIZE will be a NULL_TREE.
2124 C++ gratuitously puts all these tags in the name space. */
2126 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2127 record the shadowed value for this binding contour. TYPE is
2128 the type that ID maps to. */
2131 set_identifier_type_value_with_scope (id
, type
, b
)
2134 struct binding_level
*b
;
2136 if (!b
->namespace_p
)
2138 /* Shadow the marker, not the real thing, so that the marker
2139 gets restored later. */
2140 tree old_type_value
= REAL_IDENTIFIER_TYPE_VALUE (id
);
2142 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
2146 tree binding
= binding_for_name (id
, current_namespace
);
2147 BINDING_TYPE (binding
) = type
;
2148 /* Store marker instead of real type. */
2149 type
= global_type_node
;
2151 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
2154 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2157 set_identifier_type_value (id
, type
)
2161 set_identifier_type_value_with_scope (id
, type
, inner_binding_level
);
2165 set_identifier_local_value_with_scope (id
, val
, b
)
2167 struct binding_level
*b
;
2170 my_friendly_assert (! b
->namespace_p
, 980716);
2172 oldlocal
= IDENTIFIER_LOCAL_VALUE (id
);
2173 b
->shadowed
= tree_cons (id
, oldlocal
, b
->shadowed
);
2174 IDENTIFIER_LOCAL_VALUE (id
) = val
;
2178 set_identifier_local_value (id
, val
)
2181 set_identifier_local_value_with_scope (id
, val
, current_binding_level
);
2184 /* Return the type associated with id. */
2187 identifier_type_value (id
)
2190 /* There is no type with that name, anywhere. */
2191 if (REAL_IDENTIFIER_TYPE_VALUE (id
) == NULL_TREE
)
2193 /* This is not the type marker, but the real thing. */
2194 if (REAL_IDENTIFIER_TYPE_VALUE (id
) != global_type_node
)
2195 return REAL_IDENTIFIER_TYPE_VALUE (id
);
2196 /* Have to search for it. It must be on the global level, now.
2197 Ask lookup_name not to return non-types. */
2198 id
= lookup_name_real (id
, 2, 1, 0);
2200 return TREE_TYPE (id
);
2204 /* Pop off extraneous binding levels left over due to syntax errors.
2206 We don't pop past namespaces, as they might be valid. */
2211 #ifdef DEBUG_CP_BINDING_LEVELS
2212 fprintf (stderr
, "XXX entering pop_everything ()\n");
2214 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2216 if (class_binding_level
)
2217 pop_nested_class (1);
2221 #ifdef DEBUG_CP_BINDING_LEVELS
2222 fprintf (stderr
, "XXX leaving pop_everything ()\n");
2226 /* The type TYPE is being declared. If it is a class template, or a
2227 specialization of a class template, do any processing required and
2228 perform error-checking. If IS_FRIEND is non-zero, this TYPE is
2229 being declared a friend. B is the binding level at which this TYPE
2232 Returns the TYPE_DECL for TYPE, which may have been altered by this
2236 maybe_process_template_type_declaration (type
, globalize
, b
)
2239 struct binding_level
* b
;
2241 tree decl
= TYPE_NAME (type
);
2243 if (processing_template_parmlist
)
2244 /* You can't declare a new template type in a template parameter
2245 list. But, you can declare a non-template type:
2247 template <class A*> struct S;
2249 is a forward-declaration of `A'. */
2253 maybe_check_template_type (type
);
2255 my_friendly_assert (IS_AGGR_TYPE (type
)
2256 || TREE_CODE (type
) == ENUMERAL_TYPE
, 0);
2259 if (/* If !GLOBALIZE then we are looking at a definition.
2260 It may not be a primary template. (For example, in:
2263 struct S1 { class S2 {}; }
2265 we have to push_template_decl for S2.) */
2266 (processing_template_decl
&& !globalize
)
2267 /* If we are declaring a friend template class, we will
2268 have GLOBALIZE set, since something like:
2276 declares S2 to be at global scope. */
2277 || PROCESSING_REAL_TEMPLATE_DECL_P ())
2279 /* This may change after the call to
2280 push_template_decl_real, but we want the original value. */
2281 tree name
= DECL_NAME (decl
);
2283 decl
= push_template_decl_real (decl
, globalize
);
2284 /* If the current binding level is the binding level for the
2285 template parameters (see the comment in
2286 begin_template_parm_list) and the enclosing level is a class
2287 scope, and we're not looking at a friend, push the
2288 declaration of the member class into the class scope. In the
2289 friend case, push_template_decl will already have put the
2290 friend into global scope, if appropriate. */
2291 if (TREE_CODE (type
) != ENUMERAL_TYPE
2292 && !globalize
&& b
->pseudo_global
2293 && b
->level_chain
->parm_flag
== 2)
2295 pushdecl_with_scope (CLASSTYPE_TI_TEMPLATE (type
),
2297 /* Put this tag on the list of tags for the class, since
2298 that won't happen below because B is not the class
2299 binding level, but is instead the pseudo-global level. */
2300 b
->level_chain
->tags
=
2301 saveable_tree_cons (name
, type
, b
->level_chain
->tags
);
2302 TREE_NONLOCAL_FLAG (type
) = 1;
2303 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2304 CLASSTYPE_TAGS (current_class_type
) = b
->level_chain
->tags
;
2312 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2313 Normally put it into the inner-most non-tag-transparent scope,
2314 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2315 The latter is needed for implicit declarations. */
2318 pushtag (name
, type
, globalize
)
2322 register struct binding_level
*b
;
2326 b
= inner_binding_level
;
2327 while (b
->tag_transparent
2328 || (globalize
&& b
->parm_flag
== 2))
2331 if (toplevel_bindings_p ())
2332 b
->tags
= perm_tree_cons (name
, type
, b
->tags
);
2334 b
->tags
= saveable_tree_cons (name
, type
, b
->tags
);
2338 context
= type
? TYPE_CONTEXT (type
) : NULL_TREE
;
2341 tree cs
= current_scope ();
2345 else if (cs
!= NULL_TREE
2346 && TREE_CODE_CLASS (TREE_CODE (cs
)) == 't')
2347 /* When declaring a friend class of a local class, we want
2348 to inject the newly named class into the scope
2349 containing the local class, not the namespace scope. */
2350 context
= hack_decl_function_context (get_type_decl (cs
));
2353 c_decl
= TREE_CODE (context
) == FUNCTION_DECL
2354 ? context
: TYPE_MAIN_DECL (context
);
2357 context
= current_namespace
;
2359 /* Do C++ gratuitous typedefing. */
2360 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2362 register tree d
= NULL_TREE
;
2363 int newdecl
= 0, in_class
= 0;
2365 if ((b
->pseudo_global
&& b
->level_chain
->parm_flag
== 2)
2366 || b
->parm_flag
== 2)
2369 d
= lookup_nested_type (type
, c_decl
);
2374 d
= build_decl (TYPE_DECL
, name
, type
);
2375 if (current_lang_name
== lang_name_java
)
2376 TYPE_FOR_JAVA (type
) = 1;
2377 SET_DECL_ARTIFICIAL (d
);
2379 set_identifier_type_value_with_scope (name
, type
, b
);
2382 d
= TYPE_MAIN_DECL (d
);
2384 TYPE_NAME (type
) = d
;
2385 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
2387 d
= maybe_process_template_type_declaration (type
,
2390 if (b
->parm_flag
== 2)
2391 d
= pushdecl_class_level (d
);
2393 d
= pushdecl_with_scope (d
, b
);
2397 if (ANON_AGGRNAME_P (name
))
2398 DECL_IGNORED_P (d
) = 1;
2400 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2401 DECL_ASSEMBLER_NAME (d
) = DECL_NAME (d
);
2402 if (!uses_template_parms (type
))
2403 DECL_ASSEMBLER_NAME (d
)
2404 = get_identifier (build_overload_name (type
, 1, 1));
2407 if (b
->parm_flag
== 2)
2409 TREE_NONLOCAL_FLAG (type
) = 1;
2410 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2411 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2415 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2416 /* Use the canonical TYPE_DECL for this node. */
2417 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2420 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2421 will be the tagged type we just added to the current
2422 binding level. This fake NULL-named TYPE_DECL node helps
2423 dwarfout.c to know when it needs to output a
2424 representation of a tagged type, and it also gives us a
2425 convenient place to record the "scope start" address for
2428 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2429 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2433 /* Counter used to create anonymous type names. */
2435 static int anon_cnt
= 0;
2437 /* Return an IDENTIFIER which can be used as a name for
2438 anonymous structs and unions. */
2445 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2446 return get_identifier (buf
);
2449 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2450 This keeps dbxout from getting confused. */
2455 register struct binding_level
*b
;
2457 static int last_cnt
= 0;
2459 /* Fast out if no new anon names were declared. */
2460 if (last_cnt
== anon_cnt
)
2463 b
= current_binding_level
;
2464 while (b
->tag_transparent
)
2469 /* A NULL purpose means we have already processed all tags
2470 from here to the end of the list. */
2471 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2473 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2474 TREE_PURPOSE (tags
) = NULL_TREE
;
2475 tags
= TREE_CHAIN (tags
);
2477 last_cnt
= anon_cnt
;
2480 /* Subroutine of duplicate_decls: return truthvalue of whether
2481 or not types of these decls match.
2483 For C++, we must compare the parameter list so that `int' can match
2484 `int&' in a parameter position, but `int&' is not confused with
2488 decls_match (newdecl
, olddecl
)
2489 tree newdecl
, olddecl
;
2493 if (TREE_CODE (newdecl
) == FUNCTION_DECL
2494 && TREE_CODE (olddecl
) == FUNCTION_DECL
)
2496 tree f1
= TREE_TYPE (newdecl
);
2497 tree f2
= TREE_TYPE (olddecl
);
2498 tree p1
= TYPE_ARG_TYPES (f1
);
2499 tree p2
= TYPE_ARG_TYPES (f2
);
2501 if (DECL_REAL_CONTEXT (newdecl
) != DECL_REAL_CONTEXT (olddecl
)
2502 && ! (DECL_LANGUAGE (newdecl
) == lang_c
2503 && DECL_LANGUAGE (olddecl
) == lang_c
))
2506 /* When we parse a static member function definition,
2507 we put together a FUNCTION_DECL which thinks its type
2508 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2510 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2511 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2512 else if (TREE_CODE (f2
) == METHOD_TYPE
2513 && DECL_STATIC_FUNCTION_P (newdecl
))
2514 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2516 /* Here we must take care of the case where new default
2517 parameters are specified. Also, warn if an old
2518 declaration becomes ambiguous because default
2519 parameters may cause the two to be ambiguous. */
2520 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2522 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2523 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2525 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2529 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2531 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2534 types_match
= self_promoting_args_p (p1
);
2535 if (p1
== void_list_node
)
2536 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2538 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2539 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2541 types_match
= self_promoting_args_p (p2
);
2542 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2545 types_match
= compparms (p1
, p2
, 3);
2550 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
2551 && TREE_CODE (olddecl
) == TEMPLATE_DECL
)
2553 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2554 DECL_TEMPLATE_PARMS (olddecl
)))
2557 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2560 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2561 DECL_TEMPLATE_RESULT (newdecl
));
2565 if (TREE_TYPE (newdecl
) == error_mark_node
)
2566 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2567 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2568 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2569 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2571 /* Qualifiers must match, and they may be present on either, the type
2573 else if ((TREE_READONLY (newdecl
)
2574 || TYPE_READONLY (TREE_TYPE (newdecl
)))
2575 == (TREE_READONLY (olddecl
)
2576 || TYPE_READONLY (TREE_TYPE (olddecl
)))
2577 && (TREE_THIS_VOLATILE (newdecl
)
2578 || TYPE_VOLATILE (TREE_TYPE (newdecl
)))
2579 == (TREE_THIS_VOLATILE (olddecl
)
2580 || TYPE_VOLATILE (TREE_TYPE (olddecl
))))
2581 types_match
= comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl
)),
2582 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl
)), 1);
2590 /* If NEWDECL is `static' and an `extern' was seen previously,
2591 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2592 information about previous usage as an `extern'.)
2594 Note that this does not apply to the C++ case of declaring
2595 a variable `extern const' and then later `const'.
2597 Don't complain about built-in functions, since they are beyond
2598 the user's control. */
2601 warn_extern_redeclared_static (newdecl
, olddecl
)
2602 tree newdecl
, olddecl
;
2606 static char *explicit_extern_static_warning
2607 = "`%D' was declared `extern' and later `static'";
2608 static char *implicit_extern_static_warning
2609 = "`%D' was declared implicitly `extern' and later `static'";
2611 if (TREE_CODE (newdecl
) == TYPE_DECL
)
2614 name
= DECL_ASSEMBLER_NAME (newdecl
);
2615 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2617 /* It's okay to redeclare an ANSI built-in function as static,
2618 or to declare a non-ANSI built-in function as anything. */
2619 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2620 && olddecl
!= NULL_TREE
2621 && TREE_CODE (olddecl
) == FUNCTION_DECL
2622 && (DECL_BUILT_IN (olddecl
)
2623 || DECL_BUILT_IN_NONANSI (olddecl
))))
2625 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2626 ? implicit_extern_static_warning
2627 : explicit_extern_static_warning
, newdecl
);
2628 if (olddecl
!= NULL_TREE
)
2629 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2634 /* Handle when a new declaration NEWDECL has the same name as an old
2635 one OLDDECL in the same binding contour. Prints an error message
2638 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2639 Otherwise, return 0. */
2642 duplicate_decls (newdecl
, olddecl
)
2643 tree newdecl
, olddecl
;
2645 extern struct obstack permanent_obstack
;
2646 unsigned olddecl_uid
= DECL_UID (olddecl
);
2647 int olddecl_friend
= 0, types_match
= 0;
2648 int new_defines_function
= 0;
2650 if (newdecl
== olddecl
)
2653 types_match
= decls_match (newdecl
, olddecl
);
2655 /* If either the type of the new decl or the type of the old decl is an
2656 error_mark_node, then that implies that we have already issued an
2657 error (earlier) for some bogus type specification, and in that case,
2658 it is rather pointless to harass the user with yet more error message
2659 about the same declaration, so just pretend the types match here. */
2660 if (TREE_TYPE (newdecl
) == error_mark_node
2661 || TREE_TYPE (olddecl
) == error_mark_node
)
2664 /* Check for redeclaration and other discrepancies. */
2665 if (TREE_CODE (olddecl
) == FUNCTION_DECL
2666 && DECL_ARTIFICIAL (olddecl
)
2667 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2669 /* If you declare a built-in or predefined function name as static,
2670 the old definition is overridden, but optionally warn this was a
2671 bad choice of name. Ditto for overloads. */
2672 if (! TREE_PUBLIC (newdecl
)
2673 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2674 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2677 cp_warning ("shadowing %s function `%#D'",
2678 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2680 /* Discard the old built-in function. */
2683 else if (! types_match
)
2685 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2687 /* If the built-in is not ansi, then programs can override
2688 it even globally without an error. */
2689 if (! DECL_BUILT_IN (olddecl
))
2690 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2694 cp_error ("declaration of `%#D'", newdecl
);
2695 cp_error ("conflicts with built-in declaration `%#D'",
2701 cp_warning ("declaration of `%#D'", newdecl
);
2702 cp_warning ("conflicts with built-in declaration `%#D'",
2706 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2708 if ((TREE_CODE (olddecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (olddecl
)
2709 && TREE_CODE (newdecl
) != TYPE_DECL
2710 && ! (TREE_CODE (newdecl
) == TEMPLATE_DECL
2711 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
))
2712 || (TREE_CODE (newdecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (newdecl
)
2713 && TREE_CODE (olddecl
) != TYPE_DECL
2714 && ! (TREE_CODE (olddecl
) == TEMPLATE_DECL
2715 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
))
2718 /* We do nothing special here, because C++ does such nasty
2719 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2720 get shadowed, and know that if we need to find a TYPE_DECL
2721 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2722 slot of the identifier. */
2726 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2727 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
2728 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2729 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
2732 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2733 if (TREE_CODE (olddecl
) == TREE_LIST
)
2734 olddecl
= TREE_VALUE (olddecl
);
2735 cp_error_at ("previous declaration of `%#D'", olddecl
);
2737 /* New decl is completely inconsistent with the old one =>
2738 tell caller to replace the old one. */
2742 else if (!types_match
)
2744 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2746 /* The name of a class template may not be declared to refer to
2747 any other template, class, function, object, namespace, value,
2748 or type in the same scope. */
2749 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
2750 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2752 cp_error ("declaration of template `%#D'", newdecl
);
2753 cp_error_at ("conflicts with previous declaration `%#D'",
2756 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
2757 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
2758 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
2759 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))), 3)
2760 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2761 DECL_TEMPLATE_PARMS (olddecl
)))
2763 cp_error ("new declaration `%#D'", newdecl
);
2764 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2768 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2770 if (DECL_LANGUAGE (newdecl
) == lang_c
2771 && DECL_LANGUAGE (olddecl
) == lang_c
)
2773 cp_error ("declaration of C function `%#D' conflicts with",
2775 cp_error_at ("previous declaration `%#D' here", olddecl
);
2777 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2778 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2780 cp_error ("new declaration `%#D'", newdecl
);
2781 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2787 /* Already complained about this, so don't do so again. */
2788 else if (current_class_type
== NULL_TREE
2789 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2791 cp_error ("conflicting types for `%#D'", newdecl
);
2792 cp_error_at ("previous declaration as `%#D'", olddecl
);
2795 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2796 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2797 && (!DECL_TEMPLATE_INFO (newdecl
)
2798 || (DECL_TI_TEMPLATE (newdecl
)
2799 != DECL_TI_TEMPLATE (olddecl
))))
2800 || (DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2801 && (!DECL_TEMPLATE_INFO (olddecl
)
2802 || (DECL_TI_TEMPLATE (olddecl
)
2803 != DECL_TI_TEMPLATE (newdecl
))))))
2804 /* It's OK to have a template specialization and a non-template
2805 with the same type, or to have specializations of two
2806 different templates with the same type. Note that if one is a
2807 specialization, and the other is an instantiation of the same
2808 template, that we do not exit at this point. That situation
2809 can occur if we instantiate a template class, and then
2810 specialize one of its methods. This situation is legal, but
2811 the declarations must be merged in the usual way. */
2813 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2814 && ((DECL_TEMPLATE_INSTANTIATION (olddecl
)
2815 && !DECL_USE_TEMPLATE (newdecl
))
2816 || (DECL_TEMPLATE_INSTANTIATION (newdecl
)
2817 && !DECL_USE_TEMPLATE (olddecl
))))
2818 /* One of the declarations is a template instantiation, and the
2819 other is not a template at all. That's OK. */
2821 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
2822 && DECL_NAMESPACE_ALIAS (newdecl
)
2823 && DECL_NAMESPACE_ALIAS (newdecl
) == DECL_NAMESPACE_ALIAS (olddecl
))
2824 /* Redeclaration of namespace alias, ignore it. */
2828 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2831 cp_error (errmsg
, newdecl
);
2832 if (DECL_NAME (olddecl
) != NULL_TREE
)
2833 cp_error_at ((DECL_INITIAL (olddecl
)
2834 && namespace_bindings_p ())
2835 ? "`%#D' previously defined here"
2836 : "`%#D' previously declared here", olddecl
);
2838 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2839 && DECL_INITIAL (olddecl
) != NULL_TREE
2840 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2841 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2843 /* Prototype decl follows defn w/o prototype. */
2844 cp_warning_at ("prototype for `%#D'", newdecl
);
2845 cp_warning_at ("follows non-prototype definition here", olddecl
);
2847 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2848 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2850 /* extern "C" int foo ();
2851 int foo () { bar (); }
2853 if (current_lang_stack
== current_lang_base
)
2854 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2857 cp_error_at ("previous declaration of `%#D' with %L linkage",
2858 olddecl
, DECL_LANGUAGE (olddecl
));
2859 cp_error ("conflicts with new declaration with %L linkage",
2860 DECL_LANGUAGE (newdecl
));
2864 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
2866 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2868 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2869 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2872 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2873 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2875 for (; t1
&& t1
!= void_list_node
;
2876 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2877 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2879 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2884 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2886 cp_pedwarn_at ("after previous specification in `%#D'",
2892 cp_error ("default argument given for parameter %d of `%#D'",
2894 cp_error_at ("after previous specification in `%#D'",
2899 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2900 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
2902 cp_warning ("`%#D' was used before it was declared inline",
2904 cp_warning_at ("previous non-inline declaration here",
2908 /* These bits are logically part of the type for non-functions. */
2909 else if (TREE_READONLY (newdecl
) != TREE_READONLY (olddecl
)
2910 || TREE_THIS_VOLATILE (newdecl
) != TREE_THIS_VOLATILE (olddecl
))
2912 cp_pedwarn ("type qualifiers for `%#D'", newdecl
);
2913 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl
);
2917 /* If new decl is `static' and an `extern' was seen previously,
2919 warn_extern_redeclared_static (newdecl
, olddecl
);
2921 /* We have committed to returning 1 at this point. */
2922 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2924 /* Now that functions must hold information normally held
2925 by field decls, there is extra work to do so that
2926 declaration information does not get destroyed during
2928 if (DECL_VINDEX (olddecl
))
2929 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2930 if (DECL_CONTEXT (olddecl
))
2931 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2932 if (DECL_CLASS_CONTEXT (olddecl
))
2933 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2934 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2935 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2936 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2937 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2938 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2939 DECL_VIRTUAL_P (newdecl
) |= DECL_VIRTUAL_P (olddecl
);
2940 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl
) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl
);
2941 new_defines_function
= DECL_INITIAL (newdecl
) != NULL_TREE
;
2943 /* Optionally warn about more than one declaration for the same
2944 name, but don't warn about a function declaration followed by a
2946 if (warn_redundant_decls
&& ! DECL_ARTIFICIAL (olddecl
)
2947 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2948 /* Don't warn about extern decl followed by definition. */
2949 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
))
2950 /* Don't warn about friends, let add_friend take care of it. */
2951 && ! DECL_FRIEND_P (newdecl
))
2953 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2954 cp_warning_at ("previous declaration of `%D'", olddecl
);
2958 /* Deal with C++: must preserve virtual function table size. */
2959 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2961 register tree newtype
= TREE_TYPE (newdecl
);
2962 register tree oldtype
= TREE_TYPE (olddecl
);
2964 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2965 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2967 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2968 CLASSTYPE_FRIEND_CLASSES (newtype
)
2969 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2973 /* Copy all the DECL_... slots specified in the new decl
2974 except for any that we copy here from the old type. */
2975 DECL_MACHINE_ATTRIBUTES (newdecl
)
2976 = merge_machine_decl_attributes (olddecl
, newdecl
);
2978 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2980 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl
),
2981 DECL_TEMPLATE_RESULT (olddecl
)))
2982 cp_error ("invalid redeclaration of %D", newdecl
);
2983 TREE_TYPE (olddecl
) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
));
2984 DECL_TEMPLATE_PARMS (olddecl
) = DECL_TEMPLATE_PARMS (newdecl
);
2985 if (DECL_TEMPLATE_INFO (newdecl
))
2986 DECL_TEMPLATE_INFO (olddecl
) = DECL_TEMPLATE_INFO (newdecl
);
2987 DECL_TEMPLATE_SPECIALIZATIONS (olddecl
)
2988 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl
),
2989 DECL_TEMPLATE_SPECIALIZATIONS (newdecl
));
2996 /* Automatically handles default parameters. */
2997 tree oldtype
= TREE_TYPE (olddecl
);
3000 /* Make sure we put the new type in the same obstack as the old one. */
3002 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
3005 push_obstacks_nochange ();
3006 end_temporary_allocation ();
3009 /* Merge the data types specified in the two decls. */
3010 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
3012 if (TREE_CODE (newdecl
) == VAR_DECL
)
3013 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
3014 /* Do this after calling `common_type' so that default
3015 parameters don't confuse us. */
3016 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3017 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
3018 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
3020 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
3021 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
3022 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
3023 TYPE_RAISES_EXCEPTIONS (oldtype
));
3025 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
3026 && DECL_SOURCE_LINE (olddecl
) != 0
3028 && ! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
3030 cp_pedwarn ("declaration of `%D' throws different exceptions",
3032 cp_pedwarn_at ("previous declaration here", olddecl
);
3035 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
3037 /* Lay the type out, unless already done. */
3038 if (newtype
!= canonical_type_variant (oldtype
)
3039 && TREE_TYPE (newdecl
) != error_mark_node
3040 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3041 layout_type (TREE_TYPE (newdecl
));
3043 if ((TREE_CODE (newdecl
) == VAR_DECL
3044 || TREE_CODE (newdecl
) == PARM_DECL
3045 || TREE_CODE (newdecl
) == RESULT_DECL
3046 || TREE_CODE (newdecl
) == FIELD_DECL
3047 || TREE_CODE (newdecl
) == TYPE_DECL
)
3048 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3049 layout_decl (newdecl
, 0);
3051 /* Merge the type qualifiers. */
3052 if (TREE_READONLY (newdecl
))
3053 TREE_READONLY (olddecl
) = 1;
3054 if (TREE_THIS_VOLATILE (newdecl
))
3055 TREE_THIS_VOLATILE (olddecl
) = 1;
3057 /* Merge the initialization information. */
3058 if (DECL_INITIAL (newdecl
) == NULL_TREE
3059 && DECL_INITIAL (olddecl
) != NULL_TREE
)
3061 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3062 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
3063 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
3064 if (DECL_LANG_SPECIFIC (newdecl
)
3065 && DECL_LANG_SPECIFIC (olddecl
))
3066 DECL_SAVED_TREE (newdecl
) = DECL_SAVED_TREE (olddecl
);
3069 /* Merge the section attribute.
3070 We want to issue an error if the sections conflict but that must be
3071 done later in decl_attributes since we are called before attributes
3073 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
3074 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
3076 /* Keep the old rtl since we can safely use it, unless it's the
3077 call to abort() used for abstract virtuals. */
3078 if ((DECL_LANG_SPECIFIC (olddecl
)
3079 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3080 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
3081 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3085 /* If cannot merge, then use the new type and qualifiers,
3086 and don't preserve the old rtl. */
3089 /* Clean out any memory we had of the old declaration. */
3090 tree oldstatic
= value_member (olddecl
, static_aggregates
);
3092 TREE_VALUE (oldstatic
) = error_mark_node
;
3094 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
3095 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
3096 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
3097 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
3100 /* Merge the storage class information. */
3101 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
3102 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
3103 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
3104 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
3105 if (! DECL_EXTERNAL (olddecl
))
3106 DECL_EXTERNAL (newdecl
) = 0;
3108 if (DECL_LANG_SPECIFIC (newdecl
) && DECL_LANG_SPECIFIC (olddecl
))
3110 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
3111 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
3112 DECL_COMDAT (newdecl
) |= DECL_COMDAT (olddecl
);
3113 /* Don't really know how much of the language-specific
3114 values we should copy from old to new. */
3115 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
3116 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
3117 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
3118 if (DECL_TEMPLATE_INFO (newdecl
) == NULL_TREE
)
3120 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
3121 DECL_USE_TEMPLATE (newdecl
) = DECL_USE_TEMPLATE (olddecl
);
3123 olddecl_friend
= DECL_FRIEND_P (olddecl
);
3126 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3128 if (DECL_TEMPLATE_INSTANTIATION (olddecl
)
3129 && !DECL_TEMPLATE_INSTANTIATION (newdecl
))
3131 /* If newdecl is not a specialization, then it is not a
3132 template-related function at all. And that means that we
3133 shoud have exited above, returning 0. */
3134 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl
),
3137 if (TREE_USED (olddecl
))
3138 /* From [temp.expl.spec]:
3140 If a template, a member template or the member of a class
3141 template is explicitly specialized then that
3142 specialization shall be declared before the first use of
3143 that specialization that would cause an implicit
3144 instantiation to take place, in every translation unit in
3145 which such a use occurs. */
3146 cp_error ("explicit specialization of %D after first use",
3149 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl
);
3151 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
3153 /* If either decl says `inline', this fn is inline, unless its
3154 definition was passed already. */
3155 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
3156 DECL_INLINE (olddecl
) = 1;
3157 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
3161 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
3162 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
3163 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
3165 if (! types_match
|| new_defines_function
)
3167 /* These need to be copied so that the names are available. */
3168 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
3169 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
3171 if (new_defines_function
)
3172 /* If defining a function declared with other language
3173 linkage, use the previously declared language linkage. */
3174 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
3177 /* If redeclaring a builtin function, and not a definition,
3178 it stays built in. */
3179 if (DECL_BUILT_IN (olddecl
))
3181 DECL_BUILT_IN (newdecl
) = 1;
3182 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
3183 /* If we're keeping the built-in definition, keep the rtl,
3184 regardless of declaration matches. */
3185 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
3188 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
3190 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
3191 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
3192 /* Previously saved insns go together with
3193 the function's previous definition. */
3194 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3195 /* Don't clear out the arguments if we're redefining a function. */
3196 if (DECL_ARGUMENTS (olddecl
))
3197 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
3199 if (DECL_LANG_SPECIFIC (olddecl
))
3200 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
3203 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
3205 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
3208 /* Now preserve various other info from the definition. */
3209 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
3210 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
3211 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
3212 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
3214 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3217 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
3218 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
3220 function_size
= sizeof (struct tree_decl
);
3222 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3223 (char *) olddecl
+ sizeof (struct tree_common
),
3224 function_size
- sizeof (struct tree_common
));
3226 /* Can we safely free the storage used by newdecl? */
3228 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3229 & ~ obstack_alignment_mask (&permanent_obstack))
3231 if (DECL_TEMPLATE_INSTANTIATION (newdecl
))
3233 /* If newdecl is a template instantiation, it is possible that
3234 the following sequence of events has occurred:
3236 o A friend function was declared in a class template. The
3237 class template was instantiated.
3239 o The instantiation of the friend declaration was
3240 recorded on the instantiation list, and is newdecl.
3242 o Later, however, instantiate_class_template called pushdecl
3243 on the newdecl to perform name injection. But, pushdecl in
3244 turn called duplicate_decls when it discovered that another
3245 declaration of a global function with the same name already
3248 o Here, in duplicate_decls, we decided to clobber newdecl.
3250 If we're going to do that, we'd better make sure that
3251 olddecl, and not newdecl, is on the list of
3252 instantiations so that if we try to do the instantiation
3253 again we won't get the clobbered declaration. */
3255 tree tmpl
= DECL_TI_TEMPLATE (newdecl
);
3256 tree decls
= DECL_TEMPLATE_SPECIALIZATIONS (tmpl
);
3258 for (; decls
; decls
= TREE_CHAIN (decls
))
3259 if (TREE_VALUE (decls
) == newdecl
)
3260 TREE_VALUE (decls
) = olddecl
;
3263 if (((char *)newdecl
+ ROUND (function_size
) == (char *)nl
3264 && ((char *)newdecl
+ ROUND (function_size
)
3265 + ROUND (sizeof (struct lang_decl
))
3266 == obstack_next_free (&permanent_obstack
)))
3267 || ((char *)newdecl
+ ROUND (function_size
)
3268 == obstack_next_free (&permanent_obstack
)))
3270 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
3271 DECL_LANG_SPECIFIC (olddecl
) = ol
;
3272 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
3274 obstack_free (&permanent_obstack
, newdecl
);
3276 else if (LANG_DECL_PERMANENT (ol
) && ol
!= nl
)
3278 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
3280 /* Save these lang_decls that would otherwise be lost. */
3281 extern tree free_lang_decl_chain
;
3282 tree free_lang_decl
= (tree
) ol
;
3284 if (DECL_LANG_SPECIFIC (olddecl
) == ol
)
3287 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
3288 free_lang_decl_chain
= free_lang_decl
;
3292 /* Storage leak. */;
3298 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3299 (char *) olddecl
+ sizeof (struct tree_common
),
3300 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3301 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3304 DECL_UID (olddecl
) = olddecl_uid
;
3306 DECL_FRIEND_P (olddecl
) = 1;
3308 /* NEWDECL contains the merged attribute lists.
3309 Update OLDDECL to be the same. */
3310 DECL_MACHINE_ATTRIBUTES (olddecl
) = DECL_MACHINE_ATTRIBUTES (newdecl
);
3315 /* Record a decl-node X as belonging to the current lexical scope.
3316 Check for errors (such as an incompatible declaration for the same
3317 name already seen in the same scope).
3319 Returns either X or an old decl for the same name.
3320 If an old decl is returned, it may have been smashed
3321 to agree with what X says. */
3328 register tree name
= DECL_ASSEMBLER_NAME (x
);
3329 register struct binding_level
*b
= current_binding_level
;
3331 if (current_function_decl
&& x
!= current_function_decl
3332 /* A local declaration for a function doesn't constitute nesting. */
3333 && (TREE_CODE (x
) != FUNCTION_DECL
|| DECL_INITIAL (x
))
3334 /* Don't change DECL_CONTEXT of virtual methods. */
3335 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
3336 && ! DECL_CONTEXT (x
))
3337 DECL_CONTEXT (x
) = current_function_decl
;
3338 if (!DECL_CONTEXT (x
))
3339 DECL_CONTEXT (x
) = FROB_CONTEXT (current_namespace
);
3341 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3342 compiler wants to use. */
3343 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
3344 || TREE_CODE (x
) == NAMESPACE_DECL
|| TREE_CODE (x
) == TEMPLATE_TYPE_PARM
3345 || TREE_CODE (x
) == TEMPLATE_TEMPLATE_PARM
)
3346 name
= DECL_NAME (x
);
3351 /* Not needed...see below. */
3355 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3356 name
= TREE_OPERAND (name
, 0);
3358 /* Namespace-scoped variables are not found in the current level. */
3359 if (TREE_CODE (x
) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (x
))
3360 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3362 t
= lookup_name_current_level (name
);
3363 if (t
== error_mark_node
)
3365 /* error_mark_node is 0 for a while during initialization! */
3367 cp_error_at ("`%#D' used prior to declaration", x
);
3370 else if (t
!= NULL_TREE
)
3373 /* This is turned off until I have time to do it right (bpk). */
3374 /* With the code below that uses it... */
3375 file
= DECL_SOURCE_FILE (t
);
3376 line
= DECL_SOURCE_LINE (t
);
3378 if (TREE_CODE (t
) == PARM_DECL
)
3380 if (DECL_CONTEXT (t
) == NULL_TREE
)
3381 fatal ("parse errors have confused me too much");
3383 /* Check for duplicate params. */
3384 if (duplicate_decls (x
, t
))
3387 else if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
3388 || DECL_FUNCTION_TEMPLATE_P (x
))
3389 && is_overloaded_fn (t
))
3390 /* Don't do anything just yet. */;
3391 else if (t
== wchar_decl_node
)
3393 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3394 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
3396 /* Throw away the redeclaration. */
3399 else if (TREE_CODE (t
) != TREE_CODE (x
))
3401 if (duplicate_decls (x
, t
))
3404 else if (duplicate_decls (x
, t
))
3407 /* This is turned off until I have time to do it right (bpk). */
3409 /* Also warn if they did a prototype with `static' on it, but
3410 then later left the `static' off. */
3411 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3413 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3418 cp_warning ("`static' missing from declaration of `%D'",
3420 warning_with_file_and_line (file
, line
,
3421 "previous declaration of `%s'",
3422 decl_as_string (t
, 0));
3425 /* Now fix things so it'll do what they expect. */
3426 if (current_function_decl
)
3427 TREE_PUBLIC (current_function_decl
) = 0;
3429 /* Due to interference in memory reclamation (X may be
3430 obstack-deallocated at this point), we must guard against
3431 one really special case. [jason: This should be handled
3432 by start_function] */
3433 if (current_function_decl
== x
)
3434 current_function_decl
= t
;
3436 if (TREE_CODE (t
) == TYPE_DECL
)
3437 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3438 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3439 check_default_args (t
);
3443 else if (DECL_MAIN_P (x
))
3445 /* A redeclaration of main, but not a duplicate of the
3450 This function shall not be overloaded. */
3451 cp_error_at ("invalid redeclaration of `%D'", t
);
3452 cp_error ("as `%D'", x
);
3453 /* We don't try to push this declaration since that
3459 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3461 t
= push_overloaded_decl (x
, 1);
3462 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3465 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_NAMESPACE_SCOPE_P (x
))
3466 return push_overloaded_decl (x
, 0);
3468 /* If declaring a type as a typedef, copy the type (unless we're
3469 at line 0), and install this TYPE_DECL as the new type's typedef
3470 name. See the extensive comment in ../c-decl.c (pushdecl). */
3471 if (TREE_CODE (x
) == TYPE_DECL
)
3473 tree type
= TREE_TYPE (x
);
3474 if (DECL_SOURCE_LINE (x
) == 0)
3476 if (TYPE_NAME (type
) == 0)
3477 TYPE_NAME (type
) = x
;
3479 else if (type
!= error_mark_node
&& TYPE_NAME (type
) != x
)
3481 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
3483 DECL_ORIGINAL_TYPE (x
) = type
;
3484 type
= build_type_copy (type
);
3485 TYPE_STUB_DECL (type
) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x
));
3486 TYPE_NAME (type
) = x
;
3487 TREE_TYPE (x
) = type
;
3492 if (type
!= error_mark_node
3494 && TYPE_IDENTIFIER (type
))
3495 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3498 /* Multiple external decls of the same identifier ought to match.
3500 We get warnings about inline functions where they are defined.
3501 We get warnings about other functions from push_overloaded_decl.
3503 Avoid duplicate warnings where they are used. */
3504 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3508 if (IDENTIFIER_NAMESPACE_VALUE (name
) != NULL_TREE
3509 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name
))
3510 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name
))))
3511 decl
= IDENTIFIER_NAMESPACE_VALUE (name
);
3516 /* If different sort of thing, we already gave an error. */
3517 && TREE_CODE (decl
) == TREE_CODE (x
)
3518 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3520 cp_pedwarn ("type mismatch with previous external decl", x
);
3521 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3525 /* This name is new in its binding level.
3526 Install the new declaration and return it. */
3527 if (namespace_bindings_p ())
3529 /* Install a global value. */
3531 /* If the first global decl has external linkage,
3532 warn if we later see static one. */
3533 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
3534 TREE_PUBLIC (name
) = 1;
3536 /* Don't install an artificial TYPE_DECL if we already have
3537 another _DECL with that name. */
3538 if (TREE_CODE (x
) != TYPE_DECL
3540 || ! DECL_ARTIFICIAL (x
))
3542 if (TREE_CODE (x
) == FUNCTION_DECL
)
3544 ((IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
3545 || (IDENTIFIER_GLOBAL_VALUE (name
) == x
), 378);
3546 SET_IDENTIFIER_NAMESPACE_VALUE (name
, x
);
3549 /* Don't forget if the function was used via an implicit decl. */
3550 if (IDENTIFIER_IMPLICIT_DECL (name
)
3551 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3554 /* Don't forget if its address was taken in that way. */
3555 if (IDENTIFIER_IMPLICIT_DECL (name
)
3556 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3557 TREE_ADDRESSABLE (x
) = 1;
3559 /* Warn about mismatches against previous implicit decl. */
3560 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3561 /* If this real decl matches the implicit, don't complain. */
3562 && ! (TREE_CODE (x
) == FUNCTION_DECL
3563 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3565 ("`%D' was previously implicitly declared to return `int'", x
);
3567 /* If new decl is `static' and an `extern' was seen previously,
3569 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3570 warn_extern_redeclared_static (x
, t
);
3574 /* Here to install a non-global value. */
3575 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3576 tree oldglobal
= IDENTIFIER_NAMESPACE_VALUE (name
);
3578 /* Don't install an artificial TYPE_DECL if we already have
3579 another _DECL with that name. */
3580 if (TREE_CODE (x
) != TYPE_DECL
3582 || ! DECL_ARTIFICIAL (x
))
3583 set_identifier_local_value_with_scope (name
, x
, b
);
3585 /* If this is a TYPE_DECL, push it into the type value slot. */
3586 if (TREE_CODE (x
) == TYPE_DECL
)
3587 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3589 /* Clear out any TYPE_DECL shadowed by a namespace so that
3590 we won't think this is a type. The C struct hack doesn't
3591 go through namespaces. */
3592 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3593 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3595 /* If this is an extern function declaration, see if we
3596 have a global definition or declaration for the function. */
3597 if (oldlocal
== NULL_TREE
3598 && DECL_EXTERNAL (x
)
3599 && oldglobal
!= NULL_TREE
3600 && TREE_CODE (x
) == FUNCTION_DECL
3601 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3603 /* We have one. Their types must agree. */
3604 if (decls_match (x
, oldglobal
))
3608 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3609 cp_warning_at ("global declaration `%#D'", oldglobal
);
3612 /* If we have a local external declaration,
3613 and no file-scope declaration has yet been seen,
3614 then if we later have a file-scope decl it must not be static. */
3615 if (oldlocal
== NULL_TREE
3616 && oldglobal
== NULL_TREE
3617 && DECL_EXTERNAL (x
)
3620 TREE_PUBLIC (name
) = 1;
3623 if (DECL_FROM_INLINE (x
))
3624 /* Inline decls shadow nothing. */;
3626 /* Warn if shadowing an argument at the top level of the body. */
3627 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3628 && TREE_CODE (oldlocal
) == PARM_DECL
3629 && TREE_CODE (x
) != PARM_DECL
)
3631 /* Go to where the parms should be and see if we
3633 struct binding_level
*b
= current_binding_level
->level_chain
;
3639 if (b
->parm_flag
== 1)
3640 cp_error ("declaration of `%#D' shadows a parameter", name
);
3642 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3643 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3645 warning ("variable `%s' shadows local",
3646 IDENTIFIER_POINTER (name
));
3647 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3649 /* Maybe warn if shadowing something else. */
3650 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3651 /* No shadow warnings for internally generated vars. */
3652 && ! DECL_ARTIFICIAL (x
)
3653 /* No shadow warnings for vars made for inlining. */
3654 && ! DECL_FROM_INLINE (x
))
3656 char *warnstring
= NULL
;
3658 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3659 warnstring
= "declaration of `%s' shadows a parameter";
3660 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3661 && current_class_ptr
3662 && !TREE_STATIC (name
))
3663 warnstring
= "declaration of `%s' shadows a member of `this'";
3664 else if (oldlocal
!= NULL_TREE
)
3665 warnstring
= "declaration of `%s' shadows previous local";
3666 else if (oldglobal
!= NULL_TREE
)
3667 /* XXX shadow warnings in outer-more namespaces */
3668 warnstring
= "declaration of `%s' shadows global declaration";
3671 warning (warnstring
, IDENTIFIER_POINTER (name
));
3673 /* Check to see if decl redeclares a template parameter. */
3674 if (oldlocal
&& (current_class_type
|| current_function_decl
)
3675 && current_template_parms
)
3677 if (decl_template_parm_p (oldlocal
))
3679 cp_error ("redeclaration of template parameter `%T'", name
);
3680 cp_error_at (" previously declared here `%#D'", oldlocal
);
3685 if (TREE_CODE (x
) == FUNCTION_DECL
)
3686 check_default_args (x
);
3688 /* Keep count of variables in this level with incomplete type. */
3689 if (TREE_CODE (x
) == VAR_DECL
3690 && TREE_TYPE (x
) != error_mark_node
3691 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3692 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3693 /* RTTI TD entries are created while defining the type_info. */
3694 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3695 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3696 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3699 /* Put decls on list in reverse order.
3700 We will reverse them later if necessary. */
3701 TREE_CHAIN (x
) = b
->names
;
3703 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3704 my_friendly_abort (124);
3709 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3710 caller to set DECL_CONTEXT properly. */
3713 pushdecl_with_scope (x
, level
)
3715 struct binding_level
*level
;
3717 register struct binding_level
*b
;
3718 tree function_decl
= current_function_decl
;
3720 current_function_decl
= NULL_TREE
;
3721 if (level
->parm_flag
== 2)
3723 b
= class_binding_level
;
3724 class_binding_level
= level
;
3725 pushdecl_class_level (x
);
3726 class_binding_level
= b
;
3730 b
= current_binding_level
;
3731 current_binding_level
= level
;
3733 current_binding_level
= b
;
3735 current_function_decl
= function_decl
;
3739 /* Like pushdecl, only it places X in the current namespace,
3743 pushdecl_namespace_level (x
)
3746 register struct binding_level
*b
= inner_binding_level
;
3749 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
3751 /* Now, the type_shadowed stack may screw us. Munge it so it does
3753 if (TREE_CODE (x
) == TYPE_DECL
)
3755 tree name
= DECL_NAME (x
);
3757 tree
*ptr
= (tree
*)0;
3758 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3760 tree shadowed
= b
->type_shadowed
;
3761 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3762 if (TREE_PURPOSE (shadowed
) == name
)
3764 ptr
= &TREE_VALUE (shadowed
);
3765 /* Can't break out of the loop here because sometimes
3766 a binding level will have duplicate bindings for
3767 PT names. It's gross, but I haven't time to fix it. */
3770 newval
= TREE_TYPE (x
);
3771 if (ptr
== (tree
*)0)
3773 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3774 up here if this is changed to an assertion. --KR */
3775 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3785 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3789 pushdecl_top_level (x
)
3792 tree cur_namespace
= current_namespace
;
3793 current_namespace
= global_namespace
;
3794 x
= pushdecl_namespace_level (x
);
3795 current_namespace
= cur_namespace
;
3799 /* Make the declaration of X appear in CLASS scope. */
3802 pushdecl_class_level (x
)
3805 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3806 scope looks for the pre-mangled name. */
3807 register tree name
= DECL_NAME (x
);
3811 if (TYPE_BEING_DEFINED (current_class_type
))
3813 /* A name N used in a class S shall refer to the same declaration
3814 in its context and when re-evaluated in the completed scope of S.
3816 Types, enums, and static vars are checked here; other
3817 members are checked in finish_struct. */
3818 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3821 && flag_optional_diags
3822 /* Don't complain about inherited names. */
3823 && id_in_current_class (name
)
3824 /* Or shadowed tags. */
3825 && !(DECL_DECLARES_TYPE_P (icv
)
3826 && DECL_CONTEXT (icv
) == current_class_type
))
3828 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name
, x
);
3829 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
3834 push_class_level_binding (name
, x
);
3835 if (TREE_CODE (x
) == TYPE_DECL
)
3837 set_identifier_type_value (name
, TREE_TYPE (x
));
3844 /* This function is used to push the mangled decls for nested types into
3845 the appropriate scope. Previously pushdecl_top_level was used, but that
3846 is incorrect for members of local classes. */
3849 pushdecl_nonclass_level (x
)
3852 struct binding_level
*b
= current_binding_level
;
3854 my_friendly_assert (b
->parm_flag
!= 2, 180);
3857 /* Get out of template binding levels */
3858 while (b
->pseudo_global
)
3862 pushdecl_with_scope (x
, b
);
3866 /* Make the declaration(s) of X appear in CLASS scope
3867 under the name NAME. */
3870 push_class_level_binding (name
, x
)
3874 /* The class_binding_level will be NULL if x is a template
3875 parameter name in a member template. */
3876 if (!class_binding_level
)
3879 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3880 && purpose_member (name
, class_binding_level
->class_shadowed
))
3883 maybe_push_cache_obstack ();
3884 class_binding_level
->class_shadowed
3885 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3886 class_binding_level
->class_shadowed
);
3888 IDENTIFIER_CLASS_VALUE (name
) = x
;
3889 obstack_ptr_grow (&decl_obstack
, x
);
3892 /* Insert another USING_DECL into the current binding level,
3893 returning this declaration. If this is a redeclaration,
3894 do nothing and return NULL_TREE. */
3897 push_using_decl (scope
, name
)
3903 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
3904 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
3905 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
3906 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
3910 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
3911 DECL_INITIAL (decl
) = scope
;
3912 TREE_CHAIN (decl
) = current_binding_level
->usings
;
3913 current_binding_level
->usings
= decl
;
3917 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3918 changed (i.e. there was already a directive), or the fresh
3919 TREE_LIST otherwise. */
3922 push_using_directive (used
)
3925 tree ud
= current_binding_level
->using_directives
;
3926 tree iter
, ancestor
;
3928 /* Check if we already have this. */
3929 if (purpose_member (used
, ud
) != NULL_TREE
)
3932 /* Recursively add all namespaces used. */
3933 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
3934 push_using_directive (TREE_PURPOSE (iter
));
3936 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
3937 ud
= current_binding_level
->using_directives
;
3938 ud
= perm_tree_cons (used
, ancestor
, ud
);
3939 current_binding_level
->using_directives
= ud
;
3943 /* DECL is a FUNCTION_DECL which may have other definitions already in
3944 place. We get around this by making the value of the identifier point
3945 to a list of all the things that want to be referenced by that name. It
3946 is then up to the users of that name to decide what to do with that
3949 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3950 slot. It is dealt with the same way.
3952 The value returned may be a previous declaration if we guessed wrong
3953 about what language DECL should belong to (C or C++). Otherwise,
3954 it's always DECL (and never something that's not a _DECL). */
3957 push_overloaded_decl (decl
, forgettable
)
3961 tree orig_name
= DECL_NAME (decl
);
3963 int doing_global
= (namespace_bindings_p () || ! forgettable
);
3967 old
= namespace_binding (orig_name
, DECL_CONTEXT (decl
));
3968 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3969 && DECL_ARTIFICIAL (old
)
3970 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3972 if (duplicate_decls (decl
, old
))
3979 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
3981 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
3983 current_binding_level
->shadowed
3984 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
3991 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
3993 tree t
= TREE_TYPE (old
);
3994 if (IS_AGGR_TYPE (t
) && warn_shadow
3995 && (! DECL_IN_SYSTEM_HEADER (decl
)
3996 || ! DECL_IN_SYSTEM_HEADER (old
)))
3997 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
4000 else if (is_overloaded_fn (old
))
4004 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
4005 if (decl
== OVL_CURRENT (tmp
)
4006 || duplicate_decls (decl
, OVL_CURRENT (tmp
)))
4007 return OVL_CURRENT (tmp
);
4011 cp_error_at ("previous non-function declaration `%#D'", old
);
4012 cp_error ("conflicts with function declaration `%#D'", decl
);
4017 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4019 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4020 old
= ovl_cons (old
, NULL_TREE
);
4021 old
= ovl_cons (decl
, old
);
4024 /* orig_name is not ambiguous. */
4028 set_namespace_binding (orig_name
, current_namespace
, old
);
4030 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
4035 /* Generate an implicit declaration for identifier FUNCTIONID
4036 as a function of type int (). Print a warning if appropriate. */
4039 implicitly_declare (functionid
)
4043 int temp
= allocation_temporary_p ();
4045 push_obstacks_nochange ();
4047 /* Save the decl permanently so we can warn if definition follows.
4048 In ANSI C, warn_implicit is usually false, so the saves little space.
4049 But in C++, it's usually true, hence the extra code. */
4050 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
4051 end_temporary_allocation ();
4053 /* We used to reuse an old implicit decl here,
4054 but this loses with inline functions because it can clobber
4055 the saved decl chains. */
4056 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4058 DECL_EXTERNAL (decl
) = 1;
4059 TREE_PUBLIC (decl
) = 1;
4061 /* ANSI standard says implicit declarations are in the innermost block.
4062 So we record the decl in the standard fashion. */
4064 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
4067 /* Only one warning per identifier. */
4068 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4070 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4073 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4080 /* Return zero if the declaration NEWDECL is valid
4081 when the declaration OLDDECL (assumed to be for the same name)
4082 has already been seen.
4083 Otherwise return an error message format string with a %s
4084 where the identifier should go. */
4087 redeclaration_error_message (newdecl
, olddecl
)
4088 tree newdecl
, olddecl
;
4090 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4092 /* Because C++ can put things into name space for free,
4093 constructs like "typedef struct foo { ... } foo"
4094 would look like an erroneous redeclaration. */
4095 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
4098 return "redefinition of `%#D'";
4100 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4102 /* If this is a pure function, its olddecl will actually be
4103 the original initialization to `0' (which we force to call
4104 abort()). Don't complain about redefinition in this case. */
4105 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
4108 /* If both functions come from different namespaces, this is not
4109 a redeclaration - this is a conflict with a used function. */
4110 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4111 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4112 return "`%D' conflicts with used function";
4114 /* We'll complain about linkage mismatches in
4115 warn_extern_redeclared_static. */
4117 /* Defining the same name twice is no good. */
4118 if (DECL_INITIAL (olddecl
) != NULL_TREE
4119 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4121 if (DECL_NAME (olddecl
) == NULL_TREE
)
4122 return "`%#D' not declared in class";
4124 return "redefinition of `%#D'";
4128 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4130 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4131 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4132 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4133 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4134 && TYPE_SIZE (TREE_TYPE (newdecl
))
4135 && TYPE_SIZE (TREE_TYPE (olddecl
))))
4136 return "redefinition of `%#D'";
4139 else if (toplevel_bindings_p ())
4141 /* Objects declared at top level: */
4142 /* If at least one is a reference, it's ok. */
4143 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4145 /* Reject two definitions. */
4146 return "redefinition of `%#D'";
4150 /* Objects declared with block scope: */
4151 /* Reject two definitions, and reject a definition
4152 together with an external reference. */
4153 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4154 return "redeclaration of `%#D'";
4159 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4160 Create one if none exists so far for the current function.
4161 This function is called for both label definitions and label references. */
4167 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
4169 if (current_function_decl
== NULL_TREE
)
4171 error ("label `%s' referenced outside of any function",
4172 IDENTIFIER_POINTER (id
));
4176 if ((decl
== NULL_TREE
4177 || DECL_SOURCE_LINE (decl
) == 0)
4178 && (named_label_uses
== NULL
4179 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4180 || named_label_uses
->label_decl
!= decl
))
4182 struct named_label_list
*new_ent
;
4184 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
4185 new_ent
->label_decl
= decl
;
4186 new_ent
->names_in_scope
= current_binding_level
->names
;
4187 new_ent
->binding_level
= current_binding_level
;
4188 new_ent
->lineno_o_goto
= lineno
;
4189 new_ent
->filename_o_goto
= input_filename
;
4190 new_ent
->next
= named_label_uses
;
4191 named_label_uses
= new_ent
;
4194 /* Use a label already defined or ref'd with this name. */
4195 if (decl
!= NULL_TREE
)
4197 /* But not if it is inherited and wasn't declared to be inheritable. */
4198 if (DECL_CONTEXT (decl
) != current_function_decl
4199 && ! C_DECLARED_LABEL_FLAG (decl
))
4200 return shadow_label (id
);
4204 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4206 /* Make sure every label has an rtx. */
4209 /* A label not explicitly declared must be local to where it's ref'd. */
4210 DECL_CONTEXT (decl
) = current_function_decl
;
4212 DECL_MODE (decl
) = VOIDmode
;
4214 /* Say where one reference is to the label,
4215 for the sake of the error if it is not defined. */
4216 DECL_SOURCE_LINE (decl
) = lineno
;
4217 DECL_SOURCE_FILE (decl
) = input_filename
;
4219 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4221 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
4222 named_label_uses
->label_decl
= decl
;
4227 /* Make a label named NAME in the current function,
4228 shadowing silently any that may be inherited from containing functions
4229 or containing scopes.
4231 Note that valid use, if the label being shadowed
4232 comes from another scope in the same function,
4233 requires calling declare_nonlocal_label right away. */
4239 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
4241 if (decl
!= NULL_TREE
)
4243 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4244 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4247 return lookup_label (name
);
4250 /* Define a label, specifying the location in the source file.
4251 Return the LABEL_DECL node for the label, if the definition is valid.
4252 Otherwise return 0. */
4255 define_label (filename
, line
, name
)
4262 if (minimal_parse_mode
)
4264 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4265 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
4267 DECL_SOURCE_LINE (decl
) = line
;
4268 DECL_SOURCE_FILE (decl
) = filename
;
4273 decl
= lookup_label (name
);
4275 /* After labels, make any new cleanups go into their
4276 own new (temporary) binding contour. */
4277 current_binding_level
->more_cleanups_ok
= 0;
4279 /* If label with this name is known from an outer context, shadow it. */
4280 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
4282 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
4283 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
4284 decl
= lookup_label (name
);
4287 if (name
== get_identifier ("wchar_t"))
4288 cp_pedwarn ("label named wchar_t");
4290 if (DECL_INITIAL (decl
) != NULL_TREE
)
4292 cp_error ("duplicate label `%D'", decl
);
4297 struct named_label_list
*uses
, *prev
;
4300 /* Mark label as having been defined. */
4301 DECL_INITIAL (decl
) = error_mark_node
;
4302 /* Say where in the source. */
4303 DECL_SOURCE_FILE (decl
) = filename
;
4304 DECL_SOURCE_LINE (decl
) = line
;
4307 uses
= named_label_uses
;
4308 while (uses
!= NULL
)
4309 if (uses
->label_decl
== decl
)
4311 struct binding_level
*b
= current_binding_level
;
4314 tree new_decls
= b
->names
;
4315 tree old_decls
= (b
== uses
->binding_level
)
4316 ? uses
->names_in_scope
: NULL_TREE
;
4317 while (new_decls
!= old_decls
)
4319 if (TREE_CODE (new_decls
) == VAR_DECL
4320 /* Don't complain about crossing initialization
4321 of internal entities. They can't be accessed,
4322 and they should be cleaned up
4323 by the time we get to the label. */
4324 && ! DECL_ARTIFICIAL (new_decls
)
4325 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4326 && DECL_INITIAL (new_decls
) != error_mark_node
)
4327 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4331 cp_error ("jump to label `%D'", decl
);
4332 error_with_file_and_line (uses
->filename_o_goto
,
4333 uses
->lineno_o_goto
,
4337 cp_error_at (" crosses initialization of `%#D'",
4340 new_decls
= TREE_CHAIN (new_decls
);
4342 if (b
== uses
->binding_level
)
4348 prev
->next
= uses
->next
;
4350 named_label_uses
= uses
->next
;
4359 current_function_return_value
= NULL_TREE
;
4366 struct binding_level
*level
;
4367 struct cp_switch
*next
;
4370 static struct cp_switch
*switch_stack
;
4376 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4377 p
->level
= current_binding_level
;
4378 p
->next
= switch_stack
;
4385 switch_stack
= switch_stack
->next
;
4388 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4389 /* XXX Note decl is never actually used. (bpk) */
4392 define_case_label (decl
)
4395 tree cleanup
= last_cleanup_this_contour ();
4396 struct binding_level
*b
= current_binding_level
;
4401 static int explained
= 0;
4402 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4403 warning ("where case label appears here");
4406 warning ("(enclose actions of previous case statements requiring");
4407 warning ("destructors in their own binding contours.)");
4412 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4414 tree new_decls
= b
->names
;
4415 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4417 if (TREE_CODE (new_decls
) == VAR_DECL
4418 /* Don't complain about crossing initialization
4419 of internal entities. They can't be accessed,
4420 and they should be cleaned up
4421 by the time we get to the label. */
4422 && ! DECL_ARTIFICIAL (new_decls
)
4423 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4424 && DECL_INITIAL (new_decls
) != error_mark_node
)
4425 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4428 error ("jump to case label");
4430 cp_error_at (" crosses initialization of `%#D'",
4436 /* After labels, make any new cleanups go into their
4437 own new (temporary) binding contour. */
4439 current_binding_level
->more_cleanups_ok
= 0;
4440 current_function_return_value
= NULL_TREE
;
4443 /* Return the list of declarations of the current level.
4444 Note that this list is in reverse order unless/until
4445 you nreverse it; and when you do nreverse it, you must
4446 store the result back using `storedecls' or you will lose. */
4451 return current_binding_level
->names
;
4454 /* Return the list of type-tags (for structs, etc) of the current level. */
4459 return current_binding_level
->tags
;
4462 /* Store the list of declarations of the current level.
4463 This is done for the parameter declarations of a function being defined,
4464 after they are modified in the light of any missing parameters. */
4470 current_binding_level
->names
= decls
;
4473 /* Similarly, store the list of tags of the current level. */
4479 current_binding_level
->tags
= tags
;
4482 /* Given NAME, an IDENTIFIER_NODE,
4483 return the structure (or union or enum) definition for that name.
4484 Searches binding levels from BINDING_LEVEL up to the global level.
4485 If THISLEVEL_ONLY is nonzero, searches only the specified context
4486 (but skips any tag-transparent contexts to find one that is
4487 meaningful for tags).
4488 FORM says which kind of type the caller wants;
4489 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4490 If the wrong kind of type is found, and it's not a template, an error is
4494 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4495 enum tree_code form
;
4497 struct binding_level
*binding_level
;
4500 register struct binding_level
*level
;
4501 /* Non-zero if, we should look past a pseudo-global level, even if
4503 int allow_pseudo_global
= 1;
4505 for (level
= binding_level
; level
; level
= level
->level_chain
)
4508 if (ANON_AGGRNAME_P (name
))
4509 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4511 /* There's no need for error checking here, because
4512 anon names are unique throughout the compilation. */
4513 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4514 return TREE_VALUE (tail
);
4516 else if (level
->namespace_p
)
4517 /* Do namespace lookup. */
4518 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
4520 tree old
= binding_for_name (name
, tail
);
4522 /* If we just skipped past a pseudo global level, even
4523 though THISLEVEL_ONLY, and we find a template class
4524 declaration, then we use the _TYPE node for the
4525 template. See the example below. */
4526 if (thislevel_only
&& !allow_pseudo_global
4527 && old
&& BINDING_VALUE (old
)
4528 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
4529 old
= TREE_TYPE (BINDING_VALUE (old
));
4531 old
= BINDING_TYPE (old
);
4533 /* If it has an original type, it is a typedef, and we
4534 should not return it. */
4535 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
4537 if (old
&& TREE_CODE (old
) != form
4538 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
4540 cp_error ("`%#D' redeclared as %C", old
, form
);
4545 if (thislevel_only
|| tail
== global_namespace
)
4549 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4551 if (TREE_PURPOSE (tail
) == name
)
4553 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4554 /* Should tighten this up; it'll probably permit
4555 UNION_TYPE and a struct template, for example. */
4557 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4559 /* Definition isn't the kind we were looking for. */
4560 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4564 return TREE_VALUE (tail
);
4567 if (thislevel_only
&& ! level
->tag_transparent
)
4569 if (level
->pseudo_global
&& allow_pseudo_global
)
4571 /* We must deal with cases like this:
4573 template <class T> struct S;
4574 template <class T> struct S {};
4576 When looking up `S', for the second declaration, we
4577 would like to find the first declaration. But, we
4578 are in the pseudo-global level created for the
4579 template parameters, rather than the (surrounding)
4580 namespace level. Thus, we keep going one more level,
4581 even though THISLEVEL_ONLY is non-zero. */
4582 allow_pseudo_global
= 0;
4588 if (current_class_type
&& level
->level_chain
->namespace_p
)
4590 /* Try looking in this class's tags before heading into
4591 global binding level. */
4592 tree context
= current_class_type
;
4595 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4599 these_tags
= CLASSTYPE_TAGS (context
);
4600 if (ANON_AGGRNAME_P (name
))
4603 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4605 return TREE_VALUE (tail
);
4606 these_tags
= TREE_CHAIN (these_tags
);
4611 if (TREE_PURPOSE (these_tags
) == name
)
4613 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4615 cp_error ("`%#D' redeclared as %C in class scope",
4616 TREE_VALUE (tail
), form
);
4619 return TREE_VALUE (tail
);
4621 these_tags
= TREE_CHAIN (these_tags
);
4623 /* If this type is not yet complete, then don't
4624 look at its context. */
4625 if (TYPE_SIZE (context
) == NULL_TREE
)
4627 /* Go to next enclosing type, if any. */
4628 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4631 context
= DECL_CONTEXT (context
);
4634 my_friendly_abort (10);
4647 set_current_level_tags_transparency (tags_transparent
)
4648 int tags_transparent
;
4650 current_binding_level
->tag_transparent
= tags_transparent
;
4654 /* Given a type, find the tag that was defined for it and return the tag name.
4655 Otherwise return 0. However, the value can never be 0
4656 in the cases in which this is used.
4658 C++: If NAME is non-zero, this is the new name to install. This is
4659 done when replacing anonymous tags with real tag names. */
4662 lookup_tag_reverse (type
, name
)
4666 register struct binding_level
*level
;
4668 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4671 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4673 if (TREE_VALUE (tail
) == type
)
4676 TREE_PURPOSE (tail
) = name
;
4677 return TREE_PURPOSE (tail
);
4684 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4685 Return the type value, or NULL_TREE if not found. */
4688 lookup_nested_type (type
, context
)
4692 if (context
== NULL_TREE
)
4696 switch (TREE_CODE (context
))
4700 tree ctype
= TREE_TYPE (context
);
4701 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4703 return TREE_VALUE (match
);
4704 context
= DECL_CONTEXT (context
);
4706 /* When we have a nested class whose member functions have
4707 local types (e.g., a set of enums), we'll arrive here
4708 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4709 the enclosing class. Instead, we want to make sure we
4710 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4711 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4712 context
= TREE_CHAIN (context
);
4716 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4717 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4720 my_friendly_abort (12);
4726 /* Look up NAME in the NAMESPACE. */
4729 lookup_namespace_name (namespace, name
)
4730 tree
namespace, name
;
4732 struct tree_binding _b
;
4735 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
4736 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
4738 val
= binding_init (&_b
);
4739 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
4740 return error_mark_node
;
4742 if (BINDING_VALUE (val
))
4744 val
= BINDING_VALUE (val
);
4746 /* If we have a single function from a using decl, pull it out. */
4747 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
4748 val
= OVL_FUNCTION (val
);
4752 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
4753 return error_mark_node
;
4757 make_typename_type (context
, name
)
4763 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4764 name
= TYPE_IDENTIFIER (name
);
4765 else if (TREE_CODE (name
) == TYPE_DECL
)
4766 name
= DECL_NAME (name
);
4770 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
4772 name
= TREE_OPERAND (name
, 0);
4773 if (TREE_CODE (name
) == TEMPLATE_DECL
)
4774 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
4776 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4777 my_friendly_abort (2000);
4779 if (! uses_template_parms (context
)
4780 || currently_open_class (context
))
4782 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
4784 if (IS_AGGR_TYPE (context
))
4785 t
= lookup_field (context
, name
, 0, 0);
4789 if (t
== NULL_TREE
|| TREE_CODE (t
) != TEMPLATE_DECL
4790 || TREE_CODE (DECL_RESULT (t
)) != TYPE_DECL
)
4792 cp_error ("no class template named `%#T' in `%#T'",
4794 return error_mark_node
;
4797 return lookup_template_class (t
, TREE_OPERAND (fullname
, 1),
4799 /*entering_scope=*/0);
4803 if (IS_AGGR_TYPE (context
))
4804 t
= lookup_field (context
, name
, 0, 1);
4810 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4811 return error_mark_node
;
4814 return TREE_TYPE (t
);
4818 if (processing_template_decl
)
4819 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4820 t
= make_lang_type (TYPENAME_TYPE
);
4821 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
4822 d
= build_decl (TYPE_DECL
, name
, t
);
4823 if (processing_template_decl
)
4826 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
4827 TYPE_NAME (TREE_TYPE (d
)) = d
;
4828 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4829 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
4830 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4835 /* Select the right _DECL from multiple choices. */
4838 select_decl (binding
, flags
)
4843 val
= BINDING_VALUE (binding
);
4844 if (LOOKUP_NAMESPACES_ONLY (flags
))
4846 /* We are not interested in types. */
4847 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
4852 /* If we could have a type and
4853 we have nothing or we need a type and have none. */
4854 if (BINDING_TYPE (binding
)
4855 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
4856 && TREE_CODE (val
) != TYPE_DECL
)))
4857 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
4858 /* Don't return non-types if we really prefer types. */
4859 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
4860 && (!looking_for_template
|| TREE_CODE (val
) != TEMPLATE_DECL
))
4866 /* Unscoped lookup of a global, iterate over namespaces, considering
4867 using namespace statements. */
4870 unqualified_namespace_lookup (name
, flags
)
4874 struct tree_binding _binding
;
4875 tree b
= binding_init (&_binding
);
4876 tree initial
= current_decl_namespace();
4877 tree scope
= initial
;
4879 struct binding_level
*level
;
4880 tree val
= NULL_TREE
;
4884 val
= binding_for_name (name
, scope
);
4886 /* Initialize binding for this context. */
4887 BINDING_VALUE (b
) = BINDING_VALUE (val
);
4888 BINDING_TYPE (b
) = BINDING_TYPE (val
);
4890 /* Add all _DECLs seen through local using-directives. */
4891 for (level
= current_binding_level
;
4892 !level
->namespace_p
;
4893 level
= level
->level_chain
)
4894 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
4896 /* Give up because of error. */
4899 /* Add all _DECLs seen through global using-directives. */
4900 /* XXX local and global using lists should work equally. */
4904 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
4906 /* Give up because of error. */
4908 if (siter
== scope
) break;
4909 siter
= CP_DECL_CONTEXT (siter
);
4912 val
= select_decl (b
, flags
);
4913 if (scope
== global_namespace
)
4915 scope
= CP_DECL_CONTEXT (scope
);
4920 /* Combine prefer_type and namespaces_only into flags. */
4923 lookup_flags (prefer_type
, namespaces_only
)
4924 int prefer_type
, namespaces_only
;
4926 if (namespaces_only
)
4927 return LOOKUP_PREFER_NAMESPACES
;
4928 if (prefer_type
> 1)
4929 return LOOKUP_PREFER_TYPES
;
4930 if (prefer_type
> 0)
4931 return LOOKUP_PREFER_BOTH
;
4935 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4936 ignore it or not. Subroutine of lookup_name_real. */
4939 qualify_lookup (val
, flags
)
4943 if (val
== NULL_TREE
)
4945 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
4947 if ((flags
& LOOKUP_PREFER_TYPES
)
4948 && (TREE_CODE (val
) == TYPE_DECL
4949 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
4950 && DECL_CLASS_TEMPLATE_P (val
))))
4952 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
4957 /* Look up NAME in the current binding level and its superiors in the
4958 namespace of variables, functions and typedefs. Return a ..._DECL
4959 node of some kind representing its definition if there is only one
4960 such declaration, or return a TREE_LIST with all the overloaded
4961 definitions if there are many, or return 0 if it is undefined.
4963 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4964 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4965 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4966 Otherwise we prefer non-TYPE_DECLs.
4968 If NONCLASS is non-zero, we don't look for the NAME in class scope,
4969 using IDENTIFIER_CLASS_VALUE. */
4972 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
4974 int prefer_type
, nonclass
, namespaces_only
;
4978 tree from_obj
= NULL_TREE
;
4979 tree locval
, classval
;
4982 /* Hack: copy flag set by parser, if set. */
4983 if (only_namespace_names
)
4984 namespaces_only
= 1;
4986 if (prefer_type
== -2)
4988 extern int looking_for_typename
;
4989 tree type
= NULL_TREE
;
4992 prefer_type
= looking_for_typename
;
4994 flags
= lookup_flags (prefer_type
, namespaces_only
);
4995 /* During parsing, we need to complain. */
4996 flags
|= LOOKUP_COMPLAIN
;
4997 /* If the next thing is '<', class templates are types. */
4998 if (looking_for_template
)
4999 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5001 /* std:: becomes :: for now. */
5002 if (got_scope
== std_node
)
5003 got_scope
= void_type_node
;
5007 else if (got_object
!= error_mark_node
)
5012 if (type
== error_mark_node
)
5013 return error_mark_node
;
5014 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5015 type
= TREE_TYPE (type
);
5018 type
= complete_type (type
);
5020 if (TREE_CODE (type
) == VOID_TYPE
)
5021 type
= global_namespace
;
5022 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5024 struct tree_binding b
;
5025 val
= binding_init (&b
);
5026 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5028 val
= select_decl (val
, flags
);
5030 else if (! IS_AGGR_TYPE (type
)
5031 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5032 || TREE_CODE (type
) == TEMPLATE_TEMPLATE_PARM
5033 || TREE_CODE (type
) == TYPENAME_TYPE
)
5034 /* Someone else will give an error about this if needed. */
5036 else if (TYPE_BEING_DEFINED (type
))
5038 val
= IDENTIFIER_CLASS_VALUE (name
);
5039 if (val
&& DECL_CONTEXT (val
) != type
)
5041 struct binding_level
*b
= class_binding_level
;
5042 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
5044 tree t
= purpose_member (name
, b
->class_shadowed
);
5045 if (t
&& TREE_VALUE (t
)
5046 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
5048 val
= TREE_VALUE (t
);
5053 if (val
== NULL_TREE
)
5054 val
= lookup_field (type
, name
, 0, 1);
5056 else if (type
== current_class_type
)
5057 val
= IDENTIFIER_CLASS_VALUE (name
);
5059 val
= lookup_member (type
, name
, 0, prefer_type
);
5066 else if (got_object
&& val
)
5070 flags
= lookup_flags (prefer_type
, namespaces_only
);
5072 locval
= classval
= NULL_TREE
;
5074 if (! namespace_bindings_p ())
5075 locval
= qualify_lookup (IDENTIFIER_LOCAL_VALUE (name
), flags
);
5077 /* In C++ class fields are between local and global scope,
5078 just before the global scope. */
5079 if (current_class_type
&& ! nonclass
)
5081 classval
= IDENTIFIER_CLASS_VALUE (name
);
5082 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
5083 /* Try to find values from base classes if we are presently
5084 defining a type. We are presently only interested in
5086 classval
= lookup_field (current_class_type
, name
, 0, 1);
5088 /* Add implicit 'typename' to types from template bases. lookup_field
5089 will do this for us. If classval is actually from an enclosing
5090 scope, lookup_nested_field will get it for us. */
5091 else if (processing_template_decl
5092 && classval
&& TREE_CODE (classval
) == TYPE_DECL
5093 && ! currently_open_class (DECL_CONTEXT (classval
))
5094 && uses_template_parms (current_class_type
)
5095 && ! DECL_ARTIFICIAL (classval
))
5096 classval
= lookup_field (current_class_type
, name
, 0, 1);
5098 /* yylex() calls this with -2, since we should never start digging for
5099 the nested name at the point where we haven't even, for example,
5100 created the COMPONENT_REF or anything like that. */
5101 if (classval
== NULL_TREE
)
5102 classval
= lookup_nested_field (name
, ! yylex
);
5104 classval
= qualify_lookup (classval
, flags
);
5107 if (locval
&& classval
)
5109 if (current_scope () == current_function_decl
5110 && ! hack_decl_function_context (current_function_decl
))
5111 /* Not in a nested function. */
5115 /* This is incredibly horrible. The whole concept of
5116 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5117 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5119 tree lctx
= hack_decl_function_context (locval
);
5120 tree cctx
= hack_decl_function_context (classval
);
5122 if (lctx
== current_scope ())
5124 else if (lctx
== cctx
)
5127 /* I don't know which is right; let's just guess for now. */
5136 val
= unqualified_namespace_lookup (name
, flags
);
5138 if (classval
&& TREE_CODE (val
) == TYPE_DECL
5139 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
5140 && TREE_TYPE (TREE_TYPE (val
)))
5142 tree nsval
= unqualified_namespace_lookup (name
, flags
);
5144 if (val
&& nsval
&& TREE_CODE (nsval
) == TYPE_DECL
)
5146 static int explained
;
5147 cp_warning ("namespace-scope type `%#D'", nsval
);
5149 (" is used instead of `%D' from dependent base class", val
);
5153 cp_warning (" (use `typename %D' if that's what you meant)",
5163 /* This should only warn about types used in qualified-ids. */
5164 if (from_obj
&& from_obj
!= val
)
5166 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
5167 && TREE_CODE (val
) == TYPE_DECL
5168 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
5170 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5171 name
, got_object
, TREE_TYPE (from_obj
));
5172 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5176 /* We don't change val to from_obj if got_object depends on
5177 template parms because that breaks implicit typename for
5178 destructor calls. */
5179 if (! uses_template_parms (got_object
))
5183 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
5184 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
5186 /* Caller wants a class-or-namespace-name. */
5187 else if (prefer_type
== 1 && TREE_CODE (val
) == NAMESPACE_DECL
)
5189 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
5190 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
5191 else if (TREE_TYPE (val
) == error_mark_node
)
5192 val
= error_mark_node
;
5194 /* If we have a single function from a using decl, pull it out. */
5195 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5196 val
= OVL_FUNCTION (val
);
5205 lookup_name_nonclass (name
)
5208 return lookup_name_real (name
, 0, 1, 0);
5212 lookup_function_nonclass (name
, args
)
5216 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
5220 lookup_name_namespace_only (name
)
5223 /* type-or-namespace, nonclass, namespace_only */
5224 return lookup_name_real (name
, 1, 1, 1);
5228 lookup_name (name
, prefer_type
)
5232 return lookup_name_real (name
, prefer_type
, 0, 0);
5235 /* Similar to `lookup_name' but look only at current binding level. */
5238 lookup_name_current_level (name
)
5241 register tree t
= NULL_TREE
;
5243 if (current_binding_level
->namespace_p
)
5245 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
5247 /* extern "C" function() */
5248 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
5251 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
5253 struct binding_level
*b
= current_binding_level
;
5256 if (purpose_member (name
, b
->shadowed
))
5257 return IDENTIFIER_LOCAL_VALUE (name
);
5268 /* Like lookup_name_current_level, but for types. */
5271 lookup_type_current_level (name
)
5274 register tree t
= NULL_TREE
;
5276 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
5278 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
5279 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
5281 struct binding_level
*b
= current_binding_level
;
5284 if (purpose_member (name
, b
->type_shadowed
))
5285 return REAL_IDENTIFIER_TYPE_VALUE (name
);
5297 begin_only_namespace_names ()
5299 only_namespace_names
= 1;
5303 end_only_namespace_names ()
5305 only_namespace_names
= 0;
5308 /* Arrange for the user to get a source line number, even when the
5309 compiler is going down in flames, so that she at least has a
5310 chance of working around problems in the compiler. We used to
5311 call error(), but that let the segmentation fault continue
5312 through; now, it's much more passive by asking them to send the
5313 maintainers mail about the problem. */
5317 int sig ATTRIBUTE_UNUSED
;
5319 signal (SIGSEGV
, SIG_DFL
);
5321 signal (SIGIOT
, SIG_DFL
);
5324 signal (SIGILL
, SIG_DFL
);
5327 signal (SIGABRT
, SIG_DFL
);
5330 signal (SIGBUS
, SIG_DFL
);
5332 my_friendly_abort (0);
5336 /* Unused -- brendan 970107 */
5337 /* Array for holding types considered "built-in". These types
5338 are output in the module in which `main' is defined. */
5339 static tree
*builtin_type_tdescs_arr
;
5340 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
5343 /* Push the declarations of builtin types into the namespace.
5344 RID_INDEX, if < RID_MAX is the index of the builtin type
5345 in the array RID_POINTERS. NAME is the name used when looking
5346 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5349 record_builtin_type (rid_index
, name
, type
)
5354 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
5355 tree tdecl
= NULL_TREE
;
5357 if ((int) rid_index
< (int) RID_MAX
)
5358 rname
= ridpointers
[(int) rid_index
];
5360 tname
= get_identifier (name
);
5362 TYPE_BUILT_IN (type
) = 1;
5366 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
5367 set_identifier_type_value (tname
, NULL_TREE
);
5368 if ((int) rid_index
< (int) RID_MAX
)
5369 /* Built-in types live in the global namespace. */
5370 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
5372 if (rname
!= NULL_TREE
)
5374 if (tname
!= NULL_TREE
)
5376 set_identifier_type_value (rname
, NULL_TREE
);
5377 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
5381 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
5382 set_identifier_type_value (rname
, NULL_TREE
);
5387 /* Record one of the standard Java types.
5388 * Declare it as having the given NAME.
5389 * If SIZE > 0, it is the size of one of the integral types;
5390 * otherwise it is the negative of the size of one of the other types. */
5393 record_builtin_java_type (name
, size
)
5399 type
= make_signed_type (size
);
5400 else if (size
> -32)
5401 { /* "__java_char" or ""__java_boolean". */
5402 type
= make_unsigned_type (-size
);
5403 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5406 { /* "__java_float" or ""__java_double". */
5407 type
= make_node (REAL_TYPE
);
5408 TYPE_PRECISION (type
) = - size
;
5411 record_builtin_type (RID_MAX
, name
, type
);
5412 decl
= TYPE_NAME (type
);
5413 DECL_IGNORED_P (decl
) = 1;
5414 TYPE_FOR_JAVA (type
) = 1;
5418 /* Push a type into the namespace so that the back-ends ignore it. */
5421 record_unknown_type (type
, name
)
5425 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
5426 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5427 DECL_IGNORED_P (decl
) = 1;
5428 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5429 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
5430 TYPE_ALIGN (type
) = 1;
5431 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
5434 /* Push overloaded decl, in global scope, with one argument so it
5435 can be used as a callback from define_function. */
5438 push_overloaded_decl_1 (x
)
5441 push_overloaded_decl (x
, 0);
5448 auto_function (name
, type
, code
)
5450 enum built_in_function code
;
5452 return define_function
5453 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
5454 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
5458 /* Create the predefined scalar types of C,
5459 and some nodes representing standard constants (0, 1, (void *)0).
5460 Initialize the global binding level.
5461 Make definitions for built-in primitive functions. */
5464 init_decl_processing ()
5466 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
5468 /* Data type of memcpy. */
5469 tree memcpy_ftype
, strlen_ftype
;
5470 int wchar_type_size
;
5472 tree array_domain_type
;
5473 extern int flag_strict_prototype
;
5474 tree vb_off_identifier
= NULL_TREE
;
5475 /* Function type `char *(char *, char *)' and similar ones */
5476 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
5477 tree sizetype_endlink
;
5478 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
5479 tree void_ftype
, void_ftype_int
, void_ftype_ptr
, ptr_ftype_void
;
5481 /* Have to make these distinct before we try using them. */
5482 lang_name_cplusplus
= get_identifier ("C++");
5483 lang_name_c
= get_identifier ("C");
5484 lang_name_java
= get_identifier ("Java");
5486 /* Enter the global namespace. */
5487 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
5488 my_friendly_assert (current_lang_name
== NULL_TREE
, 375);
5489 current_lang_name
= lang_name_cplusplus
;
5490 push_namespace (get_identifier ("::"));
5491 global_namespace
= current_namespace
;
5492 current_lang_name
= NULL_TREE
;
5494 if (flag_strict_prototype
== 2)
5497 strict_prototypes_lang_c
= strict_prototypes_lang_cplusplus
;
5500 strict_prototypes_lang_c
= flag_strict_prototype
;
5503 current_lang_name
= lang_name_c
;
5505 current_function_decl
= NULL_TREE
;
5506 named_labels
= NULL_TREE
;
5507 named_label_uses
= NULL
;
5508 current_binding_level
= NULL_BINDING_LEVEL
;
5509 free_binding_level
= NULL_BINDING_LEVEL
;
5511 #ifndef __CYGWIN32__
5512 /* Because most segmentation signals can be traced back into user
5513 code, catch them and at least give the user a chance of working
5514 around compiler bugs. */
5515 signal (SIGSEGV
, signal_catch
);
5517 /* We will also catch aborts in the back-end through signal_catch and
5518 give the user a chance to see where the error might be, and to defeat
5519 aborts in the back-end when there have been errors previously in their
5522 signal (SIGIOT
, signal_catch
);
5525 signal (SIGILL
, signal_catch
);
5528 signal (SIGABRT
, signal_catch
);
5531 signal (SIGBUS
, signal_catch
);
5533 #else /* ndef __CYGWIN32__ */
5534 /* Cygwin32 cannot handle catching signals other than
5535 SIGABRT yet. We hope this will cease to be the case soon. */
5537 signal (SIGABRT
, signal_catch
);
5539 #endif /* ndef __CYGWIN32__ */
5541 gcc_obstack_init (&decl_obstack
);
5543 /* Must lay these out before anything else gets laid out. */
5544 error_mark_node
= make_node (ERROR_MARK
);
5545 TREE_PERMANENT (error_mark_node
) = 1;
5546 TREE_TYPE (error_mark_node
) = error_mark_node
;
5547 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
5548 TREE_TYPE (error_mark_list
) = error_mark_node
;
5550 /* Make the binding_level structure for global names. */
5552 global_binding_level
= current_binding_level
;
5553 /* The global level is the namespace level of ::. */
5554 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
5555 declare_namespace_level ();
5557 this_identifier
= get_identifier (THIS_NAME
);
5558 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
5559 ctor_identifier
= get_identifier (CTOR_NAME
);
5560 dtor_identifier
= get_identifier (DTOR_NAME
);
5561 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
5562 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
5563 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
5564 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
5565 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
5566 if (flag_handle_signatures
)
5568 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
5569 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
5570 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
5573 /* Define `int' and `char' first so that dbx will output them first. */
5575 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
5576 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
5578 /* Define `char', which is like either `signed char' or `unsigned char'
5579 but not the same as either. */
5583 ? make_signed_type (CHAR_TYPE_SIZE
)
5584 : make_unsigned_type (CHAR_TYPE_SIZE
));
5585 record_builtin_type (RID_CHAR
, "char", char_type_node
);
5587 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
5588 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
5590 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
5591 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
5593 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
5594 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
5595 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
5597 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
5598 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
5600 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
5601 record_builtin_type (RID_MAX
, "long long unsigned int",
5602 long_long_unsigned_type_node
);
5603 record_builtin_type (RID_MAX
, "long long unsigned",
5604 long_long_unsigned_type_node
);
5606 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
5607 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
5608 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
5609 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
5610 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
5612 /* `unsigned long' is the standard type for sizeof.
5613 Note that stddef.h uses `unsigned long',
5614 and this must agree, even if long and int are the same size. */
5616 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
))));
5619 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
5621 /* Define both `signed char' and `unsigned char'. */
5622 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
5623 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
5624 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
5625 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
5627 /* These are types that type_for_size and type_for_mode use. */
5628 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
5629 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
5630 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
5631 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
5632 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
5633 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
5634 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
5635 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
5636 intTI_type_node
= make_signed_type (GET_MODE_BITSIZE (TImode
));
5637 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intTI_type_node
));
5638 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
5639 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
5640 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
5641 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
5642 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
5643 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
5644 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
5645 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
5646 unsigned_intTI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (TImode
));
5647 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intTI_type_node
));
5649 float_type_node
= make_node (REAL_TYPE
);
5650 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
5651 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
5652 layout_type (float_type_node
);
5654 double_type_node
= make_node (REAL_TYPE
);
5655 if (flag_short_double
)
5656 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
5658 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
5659 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
5660 layout_type (double_type_node
);
5662 long_double_type_node
= make_node (REAL_TYPE
);
5663 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
5664 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
5665 layout_type (long_double_type_node
);
5667 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
5668 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
5669 complex_integer_type_node
));
5670 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
5671 layout_type (complex_integer_type_node
);
5673 complex_float_type_node
= make_node (COMPLEX_TYPE
);
5674 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
5675 complex_float_type_node
));
5676 TREE_TYPE (complex_float_type_node
) = float_type_node
;
5677 layout_type (complex_float_type_node
);
5679 complex_double_type_node
= make_node (COMPLEX_TYPE
);
5680 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
5681 complex_double_type_node
));
5682 TREE_TYPE (complex_double_type_node
) = double_type_node
;
5683 layout_type (complex_double_type_node
);
5685 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
5686 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
5687 complex_long_double_type_node
));
5688 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
5689 layout_type (complex_long_double_type_node
);
5691 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
5692 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
5693 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
5694 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
5695 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
5696 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
5697 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
5698 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
5700 integer_zero_node
= build_int_2 (0, 0);
5701 TREE_TYPE (integer_zero_node
) = integer_type_node
;
5702 integer_one_node
= build_int_2 (1, 0);
5703 TREE_TYPE (integer_one_node
) = integer_type_node
;
5704 integer_two_node
= build_int_2 (2, 0);
5705 TREE_TYPE (integer_two_node
) = integer_type_node
;
5706 integer_three_node
= build_int_2 (3, 0);
5707 TREE_TYPE (integer_three_node
) = integer_type_node
;
5709 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
5710 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
5711 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
5712 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
5713 TYPE_PRECISION (boolean_type_node
) = 1;
5714 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
5715 boolean_false_node
= build_int_2 (0, 0);
5716 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
5717 boolean_true_node
= build_int_2 (1, 0);
5718 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
5720 /* These are needed by stor-layout.c. */
5721 size_zero_node
= size_int (0);
5722 size_one_node
= size_int (1);
5724 signed_size_zero_node
= build_int_2 (0, 0);
5725 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
5727 void_type_node
= make_node (VOID_TYPE
);
5728 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
5729 layout_type (void_type_node
); /* Uses integer_zero_node. */
5730 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
5731 TREE_PARMLIST (void_list_node
) = 1;
5733 null_pointer_node
= build_int_2 (0, 0);
5734 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
5735 layout_type (TREE_TYPE (null_pointer_node
));
5737 /* Used for expressions that do nothing, but are not errors. */
5738 void_zero_node
= build_int_2 (0, 0);
5739 TREE_TYPE (void_zero_node
) = void_type_node
;
5741 string_type_node
= build_pointer_type (char_type_node
);
5742 const_string_type_node
5743 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5745 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5748 /* Make a type to be the domain of a few array types
5749 whose domains don't really matter.
5750 200 is small enough that it always fits in size_t
5751 and large enough that it can hold most function names for the
5752 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5753 array_domain_type
= build_index_type (build_int_2 (200, 0));
5755 /* Make a type for arrays of characters.
5756 With luck nothing will ever really depend on the length of this
5758 char_array_type_node
5759 = build_array_type (char_type_node
, array_domain_type
);
5760 /* Likewise for arrays of ints. */
5762 = build_array_type (integer_type_node
, array_domain_type
);
5764 /* This is just some anonymous class type. Nobody should ever
5765 need to look inside this envelope. */
5766 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5768 default_function_type
5769 = build_function_type (integer_type_node
, NULL_TREE
);
5771 ptr_type_node
= build_pointer_type (void_type_node
);
5773 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5775 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5777 endlink
= void_list_node
;
5778 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5779 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5780 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5782 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5783 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5784 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5785 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5786 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5788 void_ftype
= build_function_type (void_type_node
, endlink
);
5789 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5791 = build_function_type (void_type_node
,
5792 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5794 = build_exception_variant (void_ftype_ptr
,
5795 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5798 = build_function_type (float_type_node
,
5799 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5802 = build_function_type (double_type_node
, double_endlink
);
5804 ldouble_ftype_ldouble
5805 = build_function_type (long_double_type_node
,
5806 tree_cons (NULL_TREE
, long_double_type_node
,
5809 double_ftype_double_double
5810 = build_function_type (double_type_node
,
5811 tree_cons (NULL_TREE
, double_type_node
,
5815 = build_function_type (integer_type_node
, int_endlink
);
5818 = build_function_type (long_integer_type_node
,
5819 tree_cons (NULL_TREE
, long_integer_type_node
,
5822 int_ftype_cptr_cptr_sizet
5823 = build_function_type (integer_type_node
,
5824 tree_cons (NULL_TREE
, const_ptr_type_node
,
5825 tree_cons (NULL_TREE
, const_ptr_type_node
,
5826 tree_cons (NULL_TREE
,
5830 string_ftype_ptr_ptr
/* strcpy prototype */
5831 = build_function_type (string_type_node
,
5832 tree_cons (NULL_TREE
, string_type_node
,
5833 tree_cons (NULL_TREE
,
5834 const_string_type_node
,
5837 int_ftype_string_string
/* strcmp prototype */
5838 = build_function_type (integer_type_node
,
5839 tree_cons (NULL_TREE
, const_string_type_node
,
5840 tree_cons (NULL_TREE
,
5841 const_string_type_node
,
5844 strlen_ftype
/* strlen prototype */
5845 = build_function_type (sizetype
,
5846 tree_cons (NULL_TREE
, const_string_type_node
,
5849 memcpy_ftype
/* memcpy prototype */
5850 = build_function_type (ptr_type_node
,
5851 tree_cons (NULL_TREE
, ptr_type_node
,
5852 tree_cons (NULL_TREE
, const_ptr_type_node
,
5853 sizetype_endlink
)));
5855 if (flag_huge_objects
)
5856 delta_type_node
= long_integer_type_node
;
5858 delta_type_node
= short_integer_type_node
;
5860 builtin_function ("__builtin_constant_p", default_function_type
,
5861 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5863 builtin_return_address_fndecl
5864 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5865 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5867 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5868 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5870 ptr_ftype_void
= build_function_type (ptr_type_node
, endlink
);
5871 builtin_function ("__builtin_fp", ptr_ftype_void
, BUILT_IN_FP
, NULL_PTR
);
5872 builtin_function ("__builtin_sp", ptr_ftype_void
, BUILT_IN_SP
, NULL_PTR
);
5874 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5875 BUILT_IN_ALLOCA
, "alloca");
5876 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5877 /* Define alloca, ffs as builtins.
5878 Declare _exit just to mark it as volatile. */
5879 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5881 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5882 BUILT_IN_ALLOCA
, NULL_PTR
);
5883 /* Suppress error if redefined as a non-function. */
5884 DECL_BUILT_IN_NONANSI (temp
) = 1;
5885 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5886 /* Suppress error if redefined as a non-function. */
5887 DECL_BUILT_IN_NONANSI (temp
) = 1;
5888 temp
= builtin_function ("_exit", void_ftype_int
,
5889 NOT_BUILT_IN
, NULL_PTR
);
5890 TREE_THIS_VOLATILE (temp
) = 1;
5891 TREE_SIDE_EFFECTS (temp
) = 1;
5892 /* Suppress error if redefined as a non-function. */
5893 DECL_BUILT_IN_NONANSI (temp
) = 1;
5896 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5897 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5899 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5901 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5903 builtin_function ("__builtin_labs", long_ftype_long
,
5904 BUILT_IN_LABS
, NULL_PTR
);
5905 builtin_function ("__builtin_saveregs", ptr_ftype
,
5906 BUILT_IN_SAVEREGS
, NULL_PTR
);
5907 builtin_function ("__builtin_classify_type", default_function_type
,
5908 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5909 builtin_function ("__builtin_next_arg", ptr_ftype
,
5910 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5911 builtin_function ("__builtin_args_info", int_ftype_int
,
5912 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5913 builtin_function ("__builtin_setjmp",
5914 build_function_type (integer_type_node
,
5915 tree_cons (NULL_TREE
, ptr_type_node
,
5917 BUILT_IN_SETJMP
, NULL_PTR
);
5918 builtin_function ("__builtin_longjmp",
5919 build_function_type (integer_type_node
,
5920 tree_cons (NULL_TREE
, ptr_type_node
,
5921 tree_cons (NULL_TREE
,
5924 BUILT_IN_LONGJMP
, NULL_PTR
);
5926 /* Untyped call and return. */
5927 builtin_function ("__builtin_apply_args", ptr_ftype
,
5928 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5930 temp
= tree_cons (NULL_TREE
,
5931 build_pointer_type (build_function_type (void_type_node
,
5933 tree_cons (NULL_TREE
, ptr_ftype_sizetype
, NULL_TREE
));
5934 builtin_function ("__builtin_apply",
5935 build_function_type (ptr_type_node
, temp
),
5936 BUILT_IN_APPLY
, NULL_PTR
);
5937 builtin_function ("__builtin_return", void_ftype_ptr
,
5938 BUILT_IN_RETURN
, NULL_PTR
);
5940 /* Currently under experimentation. */
5941 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5942 BUILT_IN_MEMCPY
, "memcpy");
5943 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5944 BUILT_IN_MEMCMP
, "memcmp");
5945 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5946 BUILT_IN_STRCMP
, "strcmp");
5947 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5948 BUILT_IN_STRCPY
, "strcpy");
5949 builtin_function ("__builtin_strlen", strlen_ftype
,
5950 BUILT_IN_STRLEN
, "strlen");
5951 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5952 BUILT_IN_FSQRT
, "sqrtf");
5953 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5954 BUILT_IN_FSQRT
, NULL_PTR
);
5955 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
5956 BUILT_IN_FSQRT
, "sqrtl");
5957 builtin_function ("__builtin_sinf", float_ftype_float
,
5958 BUILT_IN_SIN
, "sinf");
5959 builtin_function ("__builtin_sin", double_ftype_double
,
5960 BUILT_IN_SIN
, "sin");
5961 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
5962 BUILT_IN_SIN
, "sinl");
5963 builtin_function ("__builtin_cosf", float_ftype_float
,
5964 BUILT_IN_COS
, "cosf");
5965 builtin_function ("__builtin_cos", double_ftype_double
,
5966 BUILT_IN_COS
, "cos");
5967 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
5968 BUILT_IN_COS
, "cosl");
5970 if (!flag_no_builtin
)
5972 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5973 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5974 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5975 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
5976 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5978 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
5979 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
5981 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
5983 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
5985 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
5986 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
5987 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
5988 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
5990 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
5991 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
5992 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
5993 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
5994 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
5995 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
5997 /* Declare these functions volatile
5998 to avoid spurious "control drops through" warnings. */
5999 temp
= builtin_function ("abort", void_ftype
,
6000 NOT_BUILT_IN
, NULL_PTR
);
6001 TREE_THIS_VOLATILE (temp
) = 1;
6002 TREE_SIDE_EFFECTS (temp
) = 1;
6003 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6005 DECL_BUILT_IN_NONANSI (temp
) = 1;
6006 temp
= builtin_function ("exit", void_ftype_int
,
6007 NOT_BUILT_IN
, NULL_PTR
);
6008 TREE_THIS_VOLATILE (temp
) = 1;
6009 TREE_SIDE_EFFECTS (temp
) = 1;
6010 DECL_BUILT_IN_NONANSI (temp
) = 1;
6014 /* Support for these has not been written in either expand_builtin
6015 or build_function_call. */
6016 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
6017 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
6018 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
6020 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
6022 builtin_function ("__builtin_fmod", double_ftype_double_double
,
6023 BUILT_IN_FMOD
, NULL_PTR
);
6024 builtin_function ("__builtin_frem", double_ftype_double_double
,
6025 BUILT_IN_FREM
, NULL_PTR
);
6026 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
6027 BUILT_IN_MEMSET
, NULL_PTR
);
6028 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
6030 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
6034 /* C++ extensions */
6036 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6037 record_unknown_type (unknown_type_node
, "unknown type");
6039 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6040 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6042 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
6044 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6046 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6047 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6049 /* This is for handling opaque types in signatures. */
6050 opaque_type_node
= copy_node (ptr_type_node
);
6051 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
6052 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
6054 /* This is special for C++ so functions can be overloaded. */
6056 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
6057 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
6058 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
6059 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
6061 = TREE_UNSIGNED (wchar_type_node
)
6062 ? unsigned_wchar_type_node
6063 : signed_wchar_type_node
;
6064 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
6066 /* Artificial declaration of wchar_t -- can be bashed */
6067 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
6069 pushdecl (wchar_decl_node
);
6071 /* This is for wide string constants. */
6072 wchar_array_type_node
6073 = build_array_type (wchar_type_node
, array_domain_type
);
6075 if (flag_vtable_thunks
)
6077 /* Make sure we get a unique function type, so we can give
6078 its pointer type a name. (This wins for gdb.) */
6079 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6080 TREE_TYPE (vfunc_type
) = integer_type_node
;
6081 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6082 layout_type (vfunc_type
);
6084 vtable_entry_type
= build_pointer_type (vfunc_type
);
6088 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
6089 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6091 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6093 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6095 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
6098 /* Make this part of an invisible union. */
6099 fields
[3] = copy_node (fields
[2]);
6100 TREE_TYPE (fields
[3]) = delta_type_node
;
6101 DECL_NAME (fields
[3]) = delta2_identifier
;
6102 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
6103 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
6104 TREE_UNSIGNED (fields
[3]) = 0;
6105 TREE_CHAIN (fields
[2]) = fields
[3];
6106 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
6108 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6111 = build_array_type (vtable_entry_type
, NULL_TREE
);
6112 layout_type (vtbl_type_node
);
6113 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
6114 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
6116 /* Simplify life by making a "sigtable_entry_type". Give its
6117 fields names so that the debugger can use them. */
6119 if (flag_handle_signatures
)
6121 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
6122 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
6124 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
6126 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
6128 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
6130 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
6133 /* Set the alignment to the max of the alignment of ptr_type_node and
6134 delta_type_node. Double alignment wastes a word on the Sparc. */
6135 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
6136 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
6140 /* Make this part of an invisible union. */
6141 fields
[5] = copy_node (fields
[4]);
6142 TREE_TYPE (fields
[5]) = delta_type_node
;
6143 DECL_NAME (fields
[5]) = vt_off_identifier
;
6144 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
6145 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
6146 TREE_UNSIGNED (fields
[5]) = 0;
6147 TREE_CHAIN (fields
[4]) = fields
[5];
6149 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
6150 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
6153 std_node
= build_decl (NAMESPACE_DECL
,
6154 get_identifier (flag_honor_std
? "fake std":"std"),
6156 pushdecl (std_node
);
6158 global_type_node
= make_node (LANG_TYPE
);
6159 record_unknown_type (global_type_node
, "global type");
6162 current_lang_name
= lang_name_cplusplus
;
6165 tree bad_alloc_type_node
, newtype
, deltype
;
6167 push_namespace (get_identifier ("std"));
6168 bad_alloc_type_node
= xref_tag
6169 (class_type_node
, get_identifier ("bad_alloc"), 1);
6172 newtype
= build_exception_variant
6173 (ptr_ftype_sizetype
, build_tree_list (NULL_TREE
, bad_alloc_type_node
));
6174 deltype
= build_exception_variant
6175 (void_ftype_ptr
, build_tree_list (NULL_TREE
, NULL_TREE
));
6176 auto_function (ansi_opname
[(int) NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6177 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], newtype
, NOT_BUILT_IN
);
6178 auto_function (ansi_opname
[(int) DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6179 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], deltype
, NOT_BUILT_IN
);
6183 = define_function ("__pure_virtual", void_ftype
,
6184 NOT_BUILT_IN
, 0, 0);
6186 /* Perform other language dependent initializations. */
6187 init_class_processing ();
6188 init_init_processing ();
6189 init_search_processing ();
6191 init_rtti_processing ();
6193 if (flag_exceptions
)
6194 init_exception_processing ();
6197 flag_inline_functions
= 0;
6200 if (! supports_one_only ())
6203 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6204 declare_function_name ();
6206 /* Prepare to check format strings against argument lists. */
6207 init_function_format_info ();
6209 /* Show we use EH for cleanups. */
6210 using_eh_for_cleanups ();
6212 print_error_function
= lang_print_error_function
;
6213 lang_get_alias_set
= &c_get_alias_set
;
6215 /* Maintain consistency. Perhaps we should just complain if they
6216 say -fwritable-strings? */
6217 if (flag_writable_strings
)
6218 flag_const_strings
= 0;
6221 /* Function to print any language-specific context for an error message. */
6224 lang_print_error_function (file
)
6227 default_print_error_function (file
);
6228 maybe_print_template_context ();
6231 /* Make a definition for a builtin function named NAME and whose data type
6232 is TYPE. TYPE should be a function type with argument types.
6233 FUNCTION_CODE tells later passes how to compile calls to this function.
6234 See tree.h for its possible values.
6236 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6237 the name to be called if we can't opencode the function. */
6240 define_function (name
, type
, function_code
, pfn
, library_name
)
6243 enum built_in_function function_code
;
6244 void (*pfn
) PROTO((tree
));
6247 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
6248 DECL_EXTERNAL (decl
) = 1;
6249 TREE_PUBLIC (decl
) = 1;
6250 DECL_ARTIFICIAL (decl
) = 1;
6252 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6253 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
6255 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6256 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6257 function in the namespace. */
6258 if (pfn
) (*pfn
) (decl
);
6260 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
6261 make_function_rtl (decl
);
6262 if (function_code
!= NOT_BUILT_IN
)
6264 DECL_BUILT_IN (decl
) = 1;
6265 DECL_FUNCTION_CODE (decl
) = function_code
;
6270 /* Called when a declaration is seen that contains no names to declare.
6271 If its type is a reference to a structure, union or enum inherited
6272 from a containing scope, shadow that tag name for the current scope
6273 with a forward reference.
6274 If its type defines a new named structure or union
6275 or defines an enum, it is valid but we need not do anything here.
6276 Otherwise, it is an error.
6278 C++: may have to grok the declspecs to learn about static,
6279 complain for anonymous unions. */
6282 shadow_tag (declspecs
)
6286 tree ob_modifier
= NULL_TREE
;
6288 register enum tree_code code
, ok_code
= ERROR_MARK
;
6289 register tree t
= NULL_TREE
;
6291 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6293 register tree value
= TREE_VALUE (link
);
6295 code
= TREE_CODE (value
);
6296 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
6298 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6300 maybe_process_partial_specialization (value
);
6306 else if (value
== ridpointers
[(int) RID_STATIC
]
6307 || value
== ridpointers
[(int) RID_EXTERN
]
6308 || value
== ridpointers
[(int) RID_AUTO
]
6309 || value
== ridpointers
[(int) RID_REGISTER
]
6310 || value
== ridpointers
[(int) RID_INLINE
]
6311 || value
== ridpointers
[(int) RID_VIRTUAL
]
6312 || value
== ridpointers
[(int) RID_EXPLICIT
])
6313 ob_modifier
= value
;
6316 /* This is where the variables in an anonymous union are
6317 declared. An anonymous union declaration looks like:
6319 because there is no declarator after the union, the parser
6320 sends that declaration here. */
6321 if (ok_code
== UNION_TYPE
6323 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
6324 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
6325 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
6326 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
6328 /* See also grok_x_components. */
6331 /* Wipe out memory of synthesized methods */
6332 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6333 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6334 TYPE_HAS_INIT_REF (t
) = 0;
6335 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6336 TYPE_HAS_ASSIGN_REF (t
) = 0;
6337 TYPE_HAS_ASSIGNMENT (t
) = 0;
6338 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6340 q
= &TYPE_METHODS (t
);
6343 if (DECL_ARTIFICIAL (*q
))
6344 *q
= TREE_CHAIN (*q
);
6346 q
= &TREE_CHAIN (*q
);
6349 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6350 function members. */
6351 if (TYPE_METHODS (t
))
6352 error ("an anonymous union cannot have function members");
6354 if (TYPE_FIELDS (t
))
6356 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
6358 finish_anon_union (decl
);
6363 /* Anonymous unions are objects, that's why we only check for
6364 inappropriate specifiers in this branch. */
6368 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
6369 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
6370 cp_error ("`%D' can only be specified for functions", ob_modifier
);
6371 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
6372 cp_error ("`%D' can only be specified for constructors",
6375 cp_error ("`%D' can only be specified for objects and functions",
6380 cp_error ("abstract declarator used as declaration");
6381 else if (found_tag
> 1)
6382 pedwarn ("multiple types in one declaration");
6386 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6389 groktypename (typename
)
6392 if (TREE_CODE (typename
) != TREE_LIST
)
6394 return grokdeclarator (TREE_VALUE (typename
),
6395 TREE_PURPOSE (typename
),
6396 TYPENAME
, 0, NULL_TREE
);
6399 /* Decode a declarator in an ordinary declaration or data definition.
6400 This is called as soon as the type information and variable name
6401 have been parsed, before parsing the initializer if any.
6402 Here we create the ..._DECL node, fill in its type,
6403 and put it on the list of decls for the current context.
6404 The ..._DECL node is returned as the value.
6406 Exception: for arrays where the length is not specified,
6407 the type is left null, to be filled in by `cp_finish_decl'.
6409 Function definitions do not come here; they go to start_function
6410 instead. However, external and forward declarations of functions
6411 do go through here. Structure field declarations are done by
6412 grokfield and not through here. */
6414 /* Set this to zero to debug not using the temporary obstack
6415 to parse initializers. */
6416 int debug_temp_inits
= 1;
6419 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
6420 tree declarator
, declspecs
;
6422 tree attributes
, prefix_attributes
;
6425 register tree type
, tem
;
6427 extern int have_extern_spec
;
6428 extern int used_extern_spec
;
6431 /* See code below that used this. */
6432 int init_written
= initialized
;
6435 /* This should only be done once on the top most decl. */
6436 if (have_extern_spec
&& !used_extern_spec
)
6438 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
6440 used_extern_spec
= 1;
6443 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
6445 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
6448 type
= TREE_TYPE (decl
);
6450 /* Don't lose if destructors must be executed at file-level. */
6451 if (! processing_template_decl
&& TREE_STATIC (decl
)
6452 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
6453 && !TREE_PERMANENT (decl
))
6455 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6456 decl
= copy_node (decl
);
6457 if (TREE_CODE (type
) == ARRAY_TYPE
)
6459 tree itype
= TYPE_DOMAIN (type
);
6460 if (itype
&& ! TREE_PERMANENT (itype
))
6462 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
6463 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
6464 TREE_TYPE (decl
) = type
;
6471 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
6472 ? DECL_CLASS_CONTEXT (decl
)
6473 : DECL_CONTEXT (decl
);
6475 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
6476 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
6478 /* When parsing the initializer, lookup should use the object's
6480 push_decl_namespace (context
);
6483 /* We are only interested in class contexts, later. */
6484 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
6485 context
= NULL_TREE
;
6488 /* Is it valid for this decl to have an initializer at all?
6489 If not, set INITIALIZED to zero, which will indirectly
6490 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6491 switch (TREE_CODE (decl
))
6494 /* typedef foo = bar means give foo the same type as bar.
6495 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6496 Any other case of an initialization in a TYPE_DECL is an error. */
6497 if (pedantic
|| list_length (declspecs
) > 1)
6499 cp_error ("typedef `%D' is initialized", decl
);
6505 cp_error ("function `%#D' is initialized like a variable", decl
);
6510 if (! processing_template_decl
)
6512 if (type
!= error_mark_node
)
6514 if (TYPE_SIZE (type
) != NULL_TREE
6515 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
6518 ("variable-sized object `%D' may not be initialized",
6523 if (TREE_CODE (type
) == ARRAY_TYPE
6524 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6527 ("elements of array `%#D' have incomplete type", decl
);
6536 if (! toplevel_bindings_p ()
6537 && DECL_EXTERNAL (decl
))
6538 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6540 DECL_EXTERNAL (decl
) = 0;
6541 if (toplevel_bindings_p ())
6542 TREE_STATIC (decl
) = 1;
6544 /* Tell `pushdecl' this is an initialized decl
6545 even though we don't yet have the initializer expression.
6546 Also tell `cp_finish_decl' it may store the real initializer. */
6547 DECL_INITIAL (decl
) = error_mark_node
;
6550 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
6552 if (TREE_CODE (decl
) == VAR_DECL
)
6554 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
6555 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
6556 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
6559 if (DECL_CONTEXT (field
) != context
)
6561 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6562 DECL_CONTEXT (field
), DECL_NAME (decl
),
6563 context
, DECL_NAME (decl
));
6564 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
6566 /* Static data member are tricky; an in-class initialization
6567 still doesn't provide a definition, so the in-class
6568 declaration will have DECL_EXTERNAL set, but will have an
6569 initialization. Thus, duplicate_decls won't warn
6570 about this situation, and so we check here. */
6571 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
6572 cp_error ("duplicate initialization of %D", decl
);
6573 if (duplicate_decls (decl
, field
))
6579 tree field
= check_classfn (context
, decl
);
6580 if (field
&& duplicate_decls (decl
, field
))
6584 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6585 DECL_IN_AGGR_P (decl
) = 0;
6586 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
6587 || CLASSTYPE_USE_TEMPLATE (context
))
6588 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
6590 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6591 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6594 pushclass (context
, 2);
6597 /* Set attributes here so if duplicate decl, will have proper attributes. */
6598 cplus_decl_attributes (decl
, attributes
, prefix_attributes
);
6600 /* Add this decl to the current binding level, but not if it
6601 comes from another scope, e.g. a static member variable.
6602 TEM may equal DECL or it may be a previous decl of the same name. */
6604 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
6605 /* Definitions of namespace members outside their namespace are
6607 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
6608 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
6609 || TREE_CODE (type
) == LANG_TYPE
6610 /* The declaration of template specializations does not affect
6611 the functions available for overload resolution, so we do not
6613 || (TREE_CODE (decl
) == FUNCTION_DECL
6614 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
6617 tem
= pushdecl (decl
);
6619 if (processing_template_decl
)
6621 if (! current_function_decl
)
6622 tem
= push_template_decl (tem
);
6623 else if (minimal_parse_mode
)
6625 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6626 copy_to_permanent (declspecs
),
6631 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6632 /* Tell the back-end to use or not use .common as appropriate. If we say
6633 -fconserve-space, we want this to save .data space, at the expense of
6634 wrong semantics. If we say -fno-conserve-space, we want this to
6635 produce errors about redefs; to do this we force variables into the
6637 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6640 if (! processing_template_decl
)
6643 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6644 push_obstacks_nochange ();
6647 /* We have no way of knowing whether the initializer will need to be
6648 evaluated at run-time or not until we've parsed it, so let's just put
6649 it in the permanent obstack. (jason) */
6651 && ! (TREE_CODE (tem
) == PARM_DECL
6652 || (TREE_READONLY (tem
)
6653 && (TREE_CODE (tem
) == VAR_DECL
6654 || TREE_CODE (tem
) == FIELD_DECL
))))
6656 /* When parsing and digesting the initializer,
6657 use temporary storage. Do this even if we will ignore the value. */
6658 if (toplevel_bindings_p () && debug_temp_inits
)
6660 if (processing_template_decl
6661 || TYPE_NEEDS_CONSTRUCTING (type
)
6662 || TREE_CODE (type
) == REFERENCE_TYPE
)
6663 /* In this case, the initializer must lay down in permanent
6664 storage, since it will be saved until `finish_file' is run. */
6667 temporary_allocation ();
6679 tree type
= TREE_TYPE (decl
);
6680 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6682 /* If this type of object needs a cleanup, and control may
6683 jump past it, make a new binding level so that it is cleaned
6684 up only when it is initialized first. */
6685 if (TYPE_NEEDS_DESTRUCTOR (type
)
6686 && current_binding_level
->more_cleanups_ok
== 0)
6687 pushlevel_temporary (1);
6690 /* Is it valid for this decl to have an initializer at all?
6691 If not, set INITIALIZED to zero, which will indirectly
6692 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6694 /* Don't allow initializations for incomplete types except for
6695 arrays which might be completed by the initialization. */
6696 if (type
== error_mark_node
)
6697 ; /* Don't complain again. */
6698 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6699 ; /* A complete type is ok. */
6700 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6702 cp_error ("variable `%#D' has initializer but incomplete type",
6705 type
= TREE_TYPE (decl
) = error_mark_node
;
6707 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6709 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6710 cp_error ("elements of array `%#D' have incomplete type", decl
);
6711 /* else we already gave an error in start_decl. */
6717 && TREE_CODE (decl
) != TYPE_DECL
6718 && TREE_CODE (decl
) != TEMPLATE_DECL
6719 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6721 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6722 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6724 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6726 /* Change the type so that assemble_variable will give
6727 DECL an rtl we can live with: (mem (const_int 0)). */
6728 type
= TREE_TYPE (decl
) = error_mark_node
;
6732 /* If any base type in the hierarchy of TYPE needs a constructor,
6733 then we set initialized to 1. This way any nodes which are
6734 created for the purposes of initializing this aggregate
6735 will live as long as it does. This is necessary for global
6736 aggregates which do not have their initializers processed until
6737 the end of the file. */
6738 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6743 /* We don't do this yet for GNU C++. */
6744 /* For a local variable, define the RTL now. */
6745 if (! toplevel_bindings_p ()
6746 /* But not if this is a duplicate decl
6747 and we preserved the rtl from the previous one
6748 (which may or may not happen). */
6749 && DECL_RTL (tem
) == NULL_RTX
)
6751 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6753 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6754 && DECL_INITIAL (tem
) != NULL_TREE
)
6760 DECL_INITIAL (decl
) = NULL_TREE
;
6763 /* Handle initialization of references.
6764 These three arguments are from `cp_finish_decl', and have the
6765 same meaning here that they do there.
6767 Quotes on semantics can be found in ARM 8.4.3. */
6770 grok_reference_init (decl
, type
, init
)
6771 tree decl
, type
, init
;
6775 if (init
== NULL_TREE
)
6777 if ((DECL_LANG_SPECIFIC (decl
) == 0
6778 || DECL_IN_AGGR_P (decl
) == 0)
6779 && ! DECL_THIS_EXTERN (decl
))
6781 cp_error ("`%D' declared as reference but not initialized", decl
);
6782 if (TREE_CODE (decl
) == VAR_DECL
)
6783 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6788 if (init
== error_mark_node
)
6791 if (TREE_CODE (type
) == REFERENCE_TYPE
6792 && TREE_CODE (init
) == CONSTRUCTOR
)
6794 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6798 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6799 /* decay_conversion is probably wrong for references to functions. */
6800 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6802 if (TREE_CODE (init
) == TREE_LIST
)
6803 init
= build_compound_expr (init
);
6805 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6806 init
= convert_from_reference (init
);
6808 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6809 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6811 /* Note: default conversion is only called in very special cases. */
6812 init
= default_conversion (init
);
6815 tmp
= convert_to_reference
6816 (type
, init
, CONV_IMPLICIT
,
6817 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6819 if (tmp
== error_mark_node
)
6821 else if (tmp
!= NULL_TREE
)
6824 DECL_INITIAL (decl
) = save_expr (init
);
6828 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6832 /* ?? Can this be optimized in some cases to
6833 hand back the DECL_INITIAL slot?? */
6834 if (TYPE_SIZE (TREE_TYPE (type
)))
6836 init
= convert_from_reference (decl
);
6837 if (TREE_PERMANENT (decl
))
6838 init
= copy_to_permanent (init
);
6839 SET_DECL_REFERENCE_SLOT (decl
, init
);
6842 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6844 expand_static_init (decl
, DECL_INITIAL (decl
));
6845 DECL_INITIAL (decl
) = NULL_TREE
;
6850 if (TREE_CODE (decl
) == VAR_DECL
)
6851 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6855 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6856 mucking with forces it does not comprehend (i.e. initialization with a
6857 constructor). If we are at global scope and won't go into COMMON, fill
6858 it in with a dummy CONSTRUCTOR to force the variable into .data;
6859 otherwise we can use error_mark_node. */
6862 obscure_complex_init (decl
, init
)
6865 if (! flag_no_inline
&& TREE_STATIC (decl
))
6867 if (extract_init (decl
, init
))
6871 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6872 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6873 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6877 DECL_INITIAL (decl
) = error_mark_node
;
6882 /* Finish processing of a declaration;
6883 install its line number and initial value.
6884 If the length of an array type is not known before,
6885 it must be determined now, from the initial value, or it is an error.
6887 Call `pop_obstacks' iff NEED_POP is nonzero.
6889 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6890 for aggregates that have constructors alive on the permanent obstack,
6891 so that the global initializing functions can be written at the end.
6893 INIT0 holds the value of an initializer that should be allowed to escape
6896 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6897 if the (init) syntax was used.
6899 For functions that take default parameters, DECL points to its
6900 "maximal" instantiation. `cp_finish_decl' must then also declared its
6901 subsequently lower and lower forms of instantiation, checking for
6902 ambiguity as it goes. This can be sped up later. */
6905 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6912 tree cleanup
= NULL_TREE
, ttype
= NULL_TREE
;
6914 int temporary
= allocation_temporary_p ();
6915 char *asmspec
= NULL
;
6916 int was_readonly
= 0;
6917 int already_used
= 0;
6919 /* If this is 0, then we did not change obstacks. */
6923 error ("assignment (not initialization) in declaration");
6927 /* If a name was specified, get the string. */
6929 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6931 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
6933 cp_error ("Cannot initialize `%D' to namespace `%D'",
6938 if (TREE_CODE (decl
) == VAR_DECL
6939 && DECL_CONTEXT (decl
)
6940 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
6941 && DECL_CONTEXT (decl
) != current_namespace
6944 /* Leave the namespace of the object. */
6945 pop_decl_namespace ();
6948 /* If the type of the thing we are declaring either has
6949 a constructor, or has a virtual function table pointer,
6950 AND its initialization was accepted by `start_decl',
6951 then we stayed on the permanent obstack through the
6952 declaration, otherwise, changed obstacks as GCC would. */
6954 type
= TREE_TYPE (decl
);
6956 if (type
== error_mark_node
)
6958 if (toplevel_bindings_p () && temporary
)
6959 end_temporary_allocation ();
6964 if (processing_template_decl
)
6966 if (init
&& DECL_INITIAL (decl
))
6967 DECL_INITIAL (decl
) = init
;
6968 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
6970 tree stmt
= DECL_VINDEX (decl
);
6971 /* If the decl is declaring a member of a local class (in a
6972 template function), the DECL_VINDEX will either be NULL,
6973 or it will be an actual virtual function index, not a
6975 if (stmt
!= NULL_TREE
&& TREE_CODE (stmt
) == DECL_STMT
)
6977 DECL_VINDEX (decl
) = NULL_TREE
;
6978 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
6985 /* Take care of TYPE_DECLs up front. */
6986 if (TREE_CODE (decl
) == TYPE_DECL
)
6988 if (init
&& DECL_INITIAL (decl
))
6990 /* typedef foo = bar; store the type of bar as the type of foo. */
6991 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
6992 DECL_INITIAL (decl
) = init
= NULL_TREE
;
6994 if (type
!= error_mark_node
6995 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
6997 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
6998 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
6999 set_identifier_type_value (DECL_NAME (decl
), type
);
7000 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
7002 GNU_xref_decl (current_function_decl
, decl
);
7004 /* If we have installed this as the canonical typedef for this
7005 type, and that type has not been defined yet, delay emitting
7006 the debug information for it, as we will emit it later. */
7007 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
7008 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
7009 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
7011 rest_of_decl_compilation (decl
, NULL_PTR
,
7012 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
7015 if (TREE_CODE (decl
) != FUNCTION_DECL
)
7017 ttype
= target_type (type
);
7020 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
7021 && TYPE_NEEDS_CONSTRUCTING (type
))
7024 /* Currently, GNU C++ puts constants in text space, making them
7025 impossible to initialize. In the future, one would hope for
7026 an operating system which understood the difference between
7027 initialization and the running of a program. */
7029 TREE_READONLY (decl
) = 0;
7032 if (TREE_CODE (decl
) == FIELD_DECL
)
7034 if (init
&& init
!= error_mark_node
)
7035 my_friendly_assert (TREE_PERMANENT (init
), 147);
7039 /* This must override the asm specifier which was placed
7040 by grokclassfn. Lay this out fresh. */
7041 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
7042 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7043 make_decl_rtl (decl
, asmspec
, 0);
7046 /* If `start_decl' didn't like having an initialization, ignore it now. */
7047 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7049 else if (DECL_EXTERNAL (decl
))
7051 else if (TREE_CODE (type
) == REFERENCE_TYPE
7052 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
7054 if (TREE_STATIC (decl
))
7055 make_decl_rtl (decl
, NULL_PTR
,
7056 toplevel_bindings_p ()
7057 || pseudo_global_level_p ());
7058 grok_reference_init (decl
, type
, init
);
7062 GNU_xref_decl (current_function_decl
, decl
);
7064 if (TREE_CODE (decl
) == FIELD_DECL
)
7066 else if (TREE_CODE (decl
) == CONST_DECL
)
7068 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7070 DECL_INITIAL (decl
) = init
;
7072 /* This will keep us from needing to worry about our obstacks. */
7073 my_friendly_assert (init
!= NULL_TREE
, 149);
7078 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7080 if (TREE_CODE (type
) == ARRAY_TYPE
)
7081 init
= digest_init (type
, init
, (tree
*) 0);
7082 else if (TREE_CODE (init
) == CONSTRUCTOR
)
7084 if (TYPE_NON_AGGREGATE_CLASS (type
))
7086 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7088 init
= error_mark_node
;
7091 goto dont_use_constructor
;
7096 dont_use_constructor
:
7097 if (TREE_CODE (init
) != TREE_VEC
)
7098 init
= store_init_value (decl
, init
);
7102 /* We must hide the initializer so that expand_decl
7103 won't try to do something it does not understand. */
7104 init
= obscure_complex_init (decl
, init
);
7106 else if (DECL_EXTERNAL (decl
))
7108 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
7109 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7112 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
7113 ctype
= TREE_TYPE (ctype
);
7114 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
7116 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
7117 cp_error ("structure `%D' with uninitialized const members", decl
);
7118 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
7119 cp_error ("structure `%D' with uninitialized reference members",
7123 if (TREE_CODE (decl
) == VAR_DECL
7124 && !DECL_INITIAL (decl
)
7125 && !TYPE_NEEDS_CONSTRUCTING (type
)
7126 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7127 cp_error ("uninitialized const `%D'", decl
);
7129 if (TYPE_SIZE (type
) != NULL_TREE
7130 && TYPE_NEEDS_CONSTRUCTING (type
))
7131 init
= obscure_complex_init (decl
, NULL_TREE
);
7133 else if (TREE_CODE (decl
) == VAR_DECL
7134 && TREE_CODE (type
) != REFERENCE_TYPE
7135 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
7137 /* ``Unless explicitly declared extern, a const object does not have
7138 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7139 However, if it's `const int foo = 1; const int foo;', don't complain
7140 about the second decl, since it does have an initializer before.
7141 We deliberately don't complain about arrays, because they're
7142 supposed to be initialized by a constructor. */
7143 if (! DECL_INITIAL (decl
)
7144 && TREE_CODE (type
) != ARRAY_TYPE
7145 && (!pedantic
|| !current_class_type
))
7146 cp_error ("uninitialized const `%#D'", decl
);
7149 /* For top-level declaration, the initial value was read in
7150 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7151 must go in the permanent obstack; but don't discard the
7152 temporary data yet. */
7154 if (toplevel_bindings_p () && temporary
)
7155 end_temporary_allocation ();
7157 /* Deduce size of array from initialization, if not already known. */
7159 if (TREE_CODE (type
) == ARRAY_TYPE
7160 && TYPE_DOMAIN (type
) == NULL_TREE
7161 && TREE_CODE (decl
) != TYPE_DECL
)
7164 = (TREE_STATIC (decl
)
7165 /* Even if pedantic, an external linkage array
7166 may have incomplete type at first. */
7167 ? pedantic
&& ! DECL_EXTERNAL (decl
)
7168 : !DECL_EXTERNAL (decl
));
7169 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7170 int failure
= complete_array_type (type
, initializer
, do_default
);
7173 cp_error ("initializer fails to determine size of `%D'", decl
);
7178 cp_error ("array size missing in `%D'", decl
);
7179 /* If a `static' var's size isn't known, make it extern as
7180 well as static, so it does not get allocated. If it's not
7181 `static', then don't mark it extern; finish_incomplete_decl
7182 will give it a default size and it will get allocated. */
7183 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7184 DECL_EXTERNAL (decl
) = 1;
7187 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7188 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7190 cp_error ("zero-size array `%D'", decl
);
7192 layout_decl (decl
, 0);
7195 if (TREE_CODE (decl
) == VAR_DECL
)
7197 if (DECL_SIZE (decl
) == NULL_TREE
7198 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
7199 layout_decl (decl
, 0);
7201 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7203 /* A static variable with an incomplete type:
7204 that is an error if it is initialized.
7205 Otherwise, let it through, but if it is not `extern'
7206 then it may cause an error message later. */
7207 if (DECL_INITIAL (decl
) != NULL_TREE
)
7208 cp_error ("storage size of `%D' isn't known", decl
);
7211 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7213 /* An automatic variable with an incomplete type: that is an error.
7214 Don't talk about array types here, since we took care of that
7215 message in grokdeclarator. */
7216 cp_error ("storage size of `%D' isn't known", decl
);
7217 TREE_TYPE (decl
) = error_mark_node
;
7219 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7220 /* Let debugger know it should output info for this type. */
7221 note_debug_info_needed (ttype
);
7223 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7224 note_debug_info_needed (DECL_CONTEXT (decl
));
7226 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7227 && DECL_SIZE (decl
) != NULL_TREE
7228 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7230 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7231 constant_expression_warning (DECL_SIZE (decl
));
7233 cp_error ("storage size of `%D' isn't constant", decl
);
7236 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7237 /* Cleanups for static variables are handled by `finish_file'. */
7238 && ! TREE_STATIC (decl
))
7240 int yes
= suspend_momentary ();
7241 cleanup
= maybe_build_cleanup (decl
);
7242 resume_momentary (yes
);
7245 /* PARM_DECLs get cleanups, too. */
7246 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
7249 end_temporary_allocation ();
7250 cleanup
= maybe_build_cleanup (decl
);
7252 resume_temporary_allocation ();
7255 /* Output the assembler code and/or RTL code for variables and functions,
7256 unless the type is an undefined structure or union.
7257 If not, it will get done when the type is completed. */
7259 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
7261 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
7262 || TREE_CODE (decl
) == RESULT_DECL
)
7264 /* ??? FIXME: What about nested classes? */
7265 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
7267 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
7268 && allocation_temporary_p ());
7271 end_temporary_allocation ();
7273 /* Extern inline function static data has external linkage.
7274 Instead of trying to deal with that, we disable inlining of
7275 such functions. The ASM_WRITTEN check is to avoid hitting this
7276 for __FUNCTION__. */
7277 if (TREE_CODE (decl
) == VAR_DECL
7278 && TREE_STATIC (decl
)
7279 && ! TREE_ASM_WRITTEN (decl
)
7280 && current_function_decl
7281 && DECL_CONTEXT (decl
) == current_function_decl
7282 && DECL_THIS_INLINE (current_function_decl
)
7283 && TREE_PUBLIC (current_function_decl
))
7285 current_function_cannot_inline
7286 = "function with static variable cannot be inline";
7289 else if (TREE_CODE (decl
) == VAR_DECL
7290 && DECL_LANG_SPECIFIC (decl
)
7291 && DECL_COMDAT (decl
))
7293 /* Dynamically initialized vars go into common. */
7294 if (DECL_INITIAL (decl
) == NULL_TREE
7295 || DECL_INITIAL (decl
) == error_mark_node
)
7296 DECL_COMMON (decl
) = 1;
7297 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7299 DECL_COMMON (decl
) = 1;
7300 DECL_INITIAL (decl
) = error_mark_node
;
7304 /* Statically initialized vars are weak or comdat, if
7307 make_decl_one_only (decl
);
7310 /* We can't do anything useful; leave vars for explicit
7312 DECL_EXTERNAL (decl
) = 1;
7313 DECL_NOT_REALLY_EXTERN (decl
) = 0;
7318 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
7319 make_decl_rtl (decl
, NULL_PTR
, toplev
);
7320 else if (TREE_CODE (decl
) == VAR_DECL
7321 && TREE_READONLY (decl
)
7322 && DECL_INITIAL (decl
) != NULL_TREE
7323 && DECL_INITIAL (decl
) != error_mark_node
7324 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
7326 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
7329 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
7332 && TREE_STATIC (decl
)
7333 && ! TREE_SIDE_EFFECTS (decl
)
7334 && ! TREE_PUBLIC (decl
)
7335 && ! DECL_EXTERNAL (decl
)
7336 && ! TYPE_NEEDS_DESTRUCTOR (type
)
7337 && DECL_MODE (decl
) != BLKmode
)
7339 /* If this variable is really a constant, then fill its DECL_RTL
7340 slot with something which won't take up storage.
7341 If something later should take its address, we can always give
7342 it legitimate RTL at that time. */
7343 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
7344 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
7345 TREE_ASM_WRITTEN (decl
) = 1;
7347 else if (toplev
&& ! TREE_PUBLIC (decl
))
7349 /* If this is a static const, change its apparent linkage
7350 if it belongs to a #pragma interface. */
7351 if (!interface_unknown
)
7353 TREE_PUBLIC (decl
) = 1;
7354 DECL_EXTERNAL (decl
) = interface_only
;
7356 make_decl_rtl (decl
, asmspec
, toplev
);
7359 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7361 else if (TREE_CODE (decl
) == VAR_DECL
7362 && DECL_LANG_SPECIFIC (decl
)
7363 && DECL_IN_AGGR_P (decl
))
7365 if (TREE_STATIC (decl
))
7367 if (init
== NULL_TREE
7368 #ifdef DEFAULT_STATIC_DEFS
7369 /* If this code is dead, then users must
7370 explicitly declare static member variables
7371 outside the class def'n as well. */
7372 && TYPE_NEEDS_CONSTRUCTING (type
)
7376 DECL_EXTERNAL (decl
) = 1;
7377 make_decl_rtl (decl
, asmspec
, 1);
7380 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7383 /* Just a constant field. Should not need any rtl. */
7387 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7390 resume_temporary_allocation ();
7392 if (type
!= error_mark_node
7393 && TYPE_LANG_SPECIFIC (type
)
7394 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
7395 abstract_virtuals_error (decl
, type
);
7396 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7397 || TREE_CODE (type
) == METHOD_TYPE
)
7398 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7399 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
7400 abstract_virtuals_error (decl
, TREE_TYPE (type
));
7402 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
7403 signature_error (decl
, type
);
7404 else if ((TREE_CODE (type
) == FUNCTION_TYPE
7405 || TREE_CODE (type
) == METHOD_TYPE
)
7406 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
7407 && IS_SIGNATURE (TREE_TYPE (type
)))
7408 signature_error (decl
, TREE_TYPE (type
));
7410 if (TREE_CODE (decl
) == FUNCTION_DECL
)
7412 else if (DECL_EXTERNAL (decl
)
7413 && ! (DECL_LANG_SPECIFIC (decl
)
7414 && DECL_NOT_REALLY_EXTERN (decl
)))
7417 DECL_INITIAL (decl
) = init
;
7419 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
7421 /* Cleanups for static variables are handled by `finish_file'. */
7422 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7423 || TYPE_NEEDS_DESTRUCTOR (type
))
7424 expand_static_init (decl
, init
);
7428 /* This is a declared decl which must live until the
7429 end of the binding contour. It may need a cleanup. */
7431 /* Recompute the RTL of a local array now
7432 if it used to be an incomplete type. */
7433 if (was_incomplete
&& ! TREE_STATIC (decl
))
7435 /* If we used it already as memory, it must stay in memory. */
7436 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7437 /* If it's still incomplete now, no init will save it. */
7438 if (DECL_SIZE (decl
) == NULL_TREE
)
7439 DECL_INITIAL (decl
) = NULL_TREE
;
7442 else if (! TREE_ASM_WRITTEN (decl
)
7443 && (TYPE_SIZE (type
) != NULL_TREE
7444 || TREE_CODE (type
) == ARRAY_TYPE
))
7446 /* Do this here, because we did not expand this decl's
7447 rtl in start_decl. */
7448 if (DECL_RTL (decl
) == NULL_RTX
)
7452 /* XXX: Why don't we use decl here? */
7453 /* Ans: Because it was already expanded? */
7454 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
7455 cp_error ("parser lost in parsing declaration of `%D'",
7457 /* Cleanup used up here. */
7458 cleanup
= NULL_TREE
;
7462 if (current_binding_level
->is_for_scope
)
7464 struct binding_level
*outer
= current_binding_level
->level_chain
;
7466 /* Check to see if the same name is already bound at
7467 the outer level, either because it was directly declared,
7468 or because a dead for-decl got preserved. In either case,
7469 the code would not have been valid under the ARM
7470 scope rules, so clear is_for_scope for the
7471 current_binding_level.
7473 Otherwise, we need to preserve the temp slot for decl
7474 to last into the outer binding level. */
7476 int handling_dead_for_vars
= 0;
7477 tree link
= outer
->names
;
7478 for (; ; link
= TREE_CHAIN (link
))
7480 if (link
== NULL
&& handling_dead_for_vars
== 0)
7482 link
= outer
->dead_vars_from_for
;
7483 handling_dead_for_vars
= 1;
7487 if (DECL_IN_MEMORY_P (decl
))
7488 preserve_temp_slots (DECL_RTL (decl
));
7491 if (DECL_NAME (link
) == DECL_NAME (decl
))
7493 if (handling_dead_for_vars
)
7496 = purpose_member (DECL_NAME (decl
),
7497 current_binding_level
->shadowed
);
7498 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
7499 TREE_VALUE (shadowing
)
7500 = DECL_SHADOWED_FOR_VAR (link
);
7502 current_binding_level
->is_for_scope
= 0;
7508 expand_start_target_temps ();
7510 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7512 /* Compute and store the initial value. */
7513 expand_decl_init (decl
);
7514 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7516 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7518 emit_line_note (DECL_SOURCE_FILE (decl
),
7519 DECL_SOURCE_LINE (decl
));
7520 expand_aggr_init (decl
, init
, 0, flags
);
7523 /* Set this to 0 so we can tell whether an aggregate which
7524 was initialized was ever used. Don't do this if it has a
7525 destructor, so we don't complain about the 'resource
7526 allocation is initialization' idiom. */
7527 /* Now set attribute((unused)) on types so decls of
7528 that type will be marked used. (see TREE_USED, above.)
7529 This avoids the warning problems this particular code
7530 tried to work around. */
7532 if (TYPE_NEEDS_CONSTRUCTING (type
)
7534 && cleanup
== NULL_TREE
7535 && DECL_NAME (decl
))
7536 TREE_USED (decl
) = 0;
7539 TREE_USED (decl
) = 1;
7542 /* Cleanup any temporaries needed for the initial value. */
7543 expand_end_target_temps ();
7545 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7547 /* Store the cleanup, if there was one. */
7550 if (! expand_decl_cleanup (decl
, cleanup
))
7551 cp_error ("parser lost in parsing declaration of `%D'",
7558 /* Undo call to `pushclass' that was done in `start_decl'
7559 due to initialization of qualified member variable.
7560 I.e., Foo::x = 10; */
7562 tree context
= DECL_REAL_CONTEXT (decl
);
7564 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
7565 && (TREE_CODE (decl
) == VAR_DECL
7566 /* We also have a pushclass done that we need to undo here
7567 if we're at top level and declare a method. */
7568 || TREE_CODE (decl
) == FUNCTION_DECL
)
7569 /* If size hasn't been set, we're still defining it,
7570 and therefore inside the class body; don't pop
7571 the binding level.. */
7572 && TYPE_SIZE (context
) != NULL_TREE
7573 && context
== current_class_type
)
7580 /* If requested, warn about definitions of large data objects. */
7582 if (warn_larger_than
7583 && ! processing_template_decl
7584 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
7585 && !DECL_EXTERNAL (decl
))
7587 register tree decl_size
= DECL_SIZE (decl
);
7589 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
7591 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
7593 if (units
> larger_than_size
)
7594 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
7600 /* Resume permanent allocation, if not within a function. */
7601 /* The corresponding push_obstacks_nochange is in start_decl,
7602 start_method, groktypename, and in grokfield. */
7607 TREE_READONLY (decl
) = 1;
7610 /* This is here for a midend callback from c-common.c */
7613 finish_decl (decl
, init
, asmspec_tree
)
7617 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
7621 expand_static_init (decl
, init
)
7625 tree oldstatic
= value_member (decl
, static_aggregates
);
7629 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
7630 cp_error ("multiple initializations given for `%D'", decl
);
7632 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7634 /* Emit code to perform this initialization but once. */
7637 /* Remember this information until end of file. */
7638 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7640 /* Emit code to perform this initialization but once. */
7641 temp
= get_temp_name (integer_type_node
, 1);
7642 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7643 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7644 integer_zero_node
, 1), 0);
7645 expand_start_target_temps ();
7647 expand_assignment (temp
, integer_one_node
, 0, 0);
7648 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7649 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7651 expand_aggr_init (decl
, init
, 0, 0);
7652 do_pending_stack_adjust ();
7655 expand_assignment (decl
, init
, 0, 0);
7657 /* Cleanup any temporaries needed for the initial value. */
7658 expand_end_target_temps ();
7660 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7662 tree cleanup
, fcall
;
7663 static tree Atexit
= 0;
7666 tree atexit_fndecl
, PFV
, pfvlist
;
7667 /* Remember this information until end of file. */
7668 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7669 PFV
= build_pointer_type (build_function_type
7670 (void_type_node
, void_list_node
));
7672 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7674 push_lang_context (lang_name_c
);
7676 = builtin_function ("atexit",
7677 build_function_type (void_type_node
,
7679 NOT_BUILT_IN
, NULL_PTR
);
7680 assemble_external (atexit_fndecl
);
7681 Atexit
= default_conversion (atexit_fndecl
);
7682 pop_lang_context ();
7686 cleanup
= start_anon_func ();
7687 expand_expr_stmt (build_cleanup (decl
));
7689 mark_addressable (cleanup
);
7690 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7691 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7692 expand_expr_stmt (fcall
);
7696 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7698 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7699 TREE_STATIC (static_aggregates
) = 1;
7702 /* Resume old (possibly temporary) allocation. */
7707 /* This code takes into account memory allocation
7708 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7709 does not hold for this object, then we must make permanent
7710 the storage currently in the temporary obstack. */
7711 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7712 preserve_initializer ();
7713 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7717 /* Make TYPE a complete type based on INITIAL_VALUE.
7718 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7719 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7722 complete_array_type (type
, initial_value
, do_default
)
7723 tree type
, initial_value
;
7726 register tree maxindex
= NULL_TREE
;
7731 /* Note MAXINDEX is really the maximum index,
7732 one less than the size. */
7733 if (TREE_CODE (initial_value
) == STRING_CST
)
7736 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7737 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7740 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7742 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7743 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7744 for (; elts
; elts
= TREE_CHAIN (elts
))
7746 if (TREE_PURPOSE (elts
))
7747 maxindex
= TREE_PURPOSE (elts
);
7749 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7751 maxindex
= copy_node (maxindex
);
7755 /* Make an error message unless that happened already. */
7756 if (initial_value
!= error_mark_node
)
7759 /* Prevent further error messages. */
7760 maxindex
= build_int_2 (0, 0);
7767 maxindex
= build_int_2 (0, 0);
7775 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7776 if (! TREE_TYPE (maxindex
))
7777 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7779 itype
= TREE_TYPE (initial_value
);
7782 if (itype
&& !TYPE_DOMAIN (itype
))
7783 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7784 /* The type of the main variant should never be used for arrays
7785 of different sizes. It should only ever be completed with the
7786 size of the array. */
7787 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7788 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7791 /* Lay out the type now that we can get the real answer. */
7798 /* Return zero if something is declared to be a member of type
7799 CTYPE when in the context of CUR_TYPE. STRING is the error
7800 message to print in that case. Otherwise, quietly return 1. */
7803 member_function_or_else (ctype
, cur_type
, string
)
7804 tree ctype
, cur_type
;
7807 if (ctype
&& ctype
!= cur_type
)
7809 error (string
, TYPE_NAME_STRING (ctype
));
7815 /* Subroutine of `grokdeclarator'. */
7817 /* Generate errors possibly applicable for a given set of specifiers.
7818 This is for ARM $7.1.2. */
7821 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7824 int virtualp
, quals
, friendp
, raises
, inlinep
;
7827 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7829 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7831 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7834 cp_error_at ("invalid friend declaration", object
);
7836 cp_error_at ("invalid exception specifications", object
);
7839 /* CTYPE is class type, or null if non-class.
7840 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7842 DECLARATOR is the function's name.
7843 VIRTUALP is truthvalue of whether the function is virtual or not.
7844 FLAGS are to be passed through to `grokclassfn'.
7845 QUALS are qualifiers indicating whether the function is `const'
7847 RAISES is a list of exceptions that this function can raise.
7848 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7849 not look, and -1 if we should not call `grokclassfn' at all. */
7852 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7853 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7854 template_count
, in_namespace
)
7857 tree orig_declarator
;
7859 enum overload_flags flags
;
7860 tree quals
, raises
, attrlist
;
7861 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7865 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7869 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7870 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7876 type
= build_exception_variant (type
, raises
);
7879 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7880 /* Propagate volatile out from type to decl. */
7881 if (TYPE_VOLATILE (type
))
7882 TREE_THIS_VOLATILE (decl
) = 1;
7884 /* This decl is not from the current namespace. */
7886 set_decl_namespace (decl
, in_namespace
);
7888 /* Should probably propagate const out from type to decl I bet (mrs). */
7891 DECL_STATIC_FUNCTION_P (decl
) = 1;
7892 DECL_CONTEXT (decl
) = ctype
;
7896 DECL_CLASS_CONTEXT (decl
) = ctype
;
7898 if (ctype
== NULL_TREE
&& MAIN_NAME_P (declarator
))
7901 error ("cannot declare `main' to be inline");
7903 error ("cannot declare `main' to be static");
7908 /* Members of anonymous types have no linkage; make them internal. */
7909 if (ctype
&& ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype
)))
7914 /* [basic.link]: A name with no linkage (notably, the name of a class
7915 or enumeration declared in a local scope) shall not be used to
7916 declare an entity with linkage.
7918 Only check this for public decls for now. */
7919 t
= no_linkage_check (TREE_TYPE (decl
));
7922 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
7923 cp_pedwarn ("non-local function `%#D' uses anonymous type", decl
);
7925 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
7930 TREE_PUBLIC (decl
) = publicp
;
7933 DECL_INTERFACE_KNOWN (decl
) = 1;
7934 DECL_NOT_REALLY_EXTERN (decl
) = 1;
7938 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7940 DECL_EXTERNAL (decl
) = 1;
7941 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7943 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7944 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7948 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7949 grok_op_properties (decl
, virtualp
, check
< 0);
7951 if (ctype
&& hack_decl_function_context (decl
))
7952 DECL_NO_STATIC_CHAIN (decl
) = 1;
7954 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
7955 if (TREE_PURPOSE (t
)
7956 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
7958 add_defarg_fn (decl
);
7963 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
7967 ("defining explicit specialization `%D' in friend declaration",
7971 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
7973 /* Something like `template <class T> friend void f<T>()'. */
7974 cp_error ("template-id `%D' in declaration of primary template",
7976 return error_mark_node
;
7979 /* A friend declaration of the form friend void f<>(). Record
7980 the information in the TEMPLATE_ID_EXPR. */
7981 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
7982 DECL_TEMPLATE_INFO (decl
)
7983 = perm_tree_cons (TREE_OPERAND (orig_declarator
, 0),
7984 TREE_OPERAND (orig_declarator
, 1),
7989 /* Caller will do the rest of this. */
7993 if (check
&& funcdef_flag
)
7994 DECL_INITIAL (decl
) = error_mark_node
;
7996 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
7999 /* Just handle constructors here. We could do this
8000 inside the following if stmt, but I think
8001 that the code is more legible by breaking this
8002 case out. See comments below for what each of
8003 the following calls is supposed to do. */
8004 DECL_CONSTRUCTOR_P (decl
) = 1;
8006 grokclassfn (ctype
, declarator
, decl
, flags
, quals
);
8008 decl
= check_explicit_specialization (orig_declarator
, decl
,
8010 2 * (funcdef_flag
!= 0) +
8011 4 * (friendp
!= 0));
8013 if ((! TYPE_FOR_JAVA (ctype
) || check_java_method (ctype
, decl
))
8016 tmp
= check_classfn (ctype
, decl
);
8018 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8019 tmp
= DECL_TEMPLATE_RESULT(tmp
);
8021 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8022 cp_error ("definition of implicitly-declared `%D'", tmp
);
8023 if (tmp
&& duplicate_decls (decl
, tmp
))
8026 if (! grok_ctor_properties (ctype
, decl
))
8029 if (check
== 0 && ! current_function_decl
)
8031 /* Assembler names live in the global namespace. */
8032 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
8033 if (tmp
== NULL_TREE
)
8034 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8035 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8036 cp_error ("inconsistent declarations for `%D'", decl
);
8039 duplicate_decls (decl
, tmp
);
8042 make_decl_rtl (decl
, NULL_PTR
, 1);
8049 /* Function gets the ugly name, field gets the nice one.
8050 This call may change the type of the function (because
8051 of default parameters)! */
8052 if (ctype
!= NULL_TREE
)
8053 grokclassfn (ctype
, cname
, decl
, flags
, quals
);
8055 decl
= check_explicit_specialization (orig_declarator
, decl
,
8057 2 * (funcdef_flag
!= 0) +
8058 4 * (friendp
!= 0));
8059 if (ctype
!= NULL_TREE
8060 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (ctype
, decl
))
8063 tmp
= check_classfn (ctype
, decl
);
8065 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
8066 tmp
= DECL_TEMPLATE_RESULT (tmp
);
8068 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
8069 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
8071 /* Remove the `this' parm added by grokclassfn.
8072 XXX Isn't this done in start_function, too? */
8073 revert_static_member_fn (&decl
, NULL
, NULL
);
8074 last_function_parms
= TREE_CHAIN (last_function_parms
);
8076 if (tmp
&& DECL_ARTIFICIAL (tmp
))
8077 cp_error ("definition of implicitly-declared `%D'", tmp
);
8080 if (!duplicate_decls (decl
, tmp
))
8081 my_friendly_abort (892);
8086 if (ctype
== NULL_TREE
|| check
)
8089 /* Now install the declaration of this function so that others may
8090 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8092 if (! current_function_decl
)
8094 if (!DECL_TEMPLATE_SPECIALIZATION (decl
))
8096 /* We don't do this for specializations since the
8097 equivalent checks will be done later. Also, at this
8098 point the DECL_ASSEMBLER_NAME is not yet fully
8101 /* FIXME: this should only need to look at
8102 IDENTIFIER_GLOBAL_VALUE. */
8103 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
8104 if (tmp
== NULL_TREE
)
8105 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
), decl
);
8106 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
8107 cp_error ("inconsistent declarations for `%D'", decl
);
8110 duplicate_decls (decl
, tmp
);
8116 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
8117 TREE_VALUE (attrlist
));
8118 make_decl_rtl (decl
, NULL_PTR
, 1);
8122 DECL_VIRTUAL_P (decl
) = 1;
8123 if (DECL_VINDEX (decl
) == NULL_TREE
)
8124 DECL_VINDEX (decl
) = error_mark_node
;
8125 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
8132 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
8135 RID_BIT_TYPE
*specbits_in
;
8141 RID_BIT_TYPE specbits
;
8143 specbits
= *specbits_in
;
8145 if (TREE_CODE (type
) == OFFSET_TYPE
)
8147 /* If you declare a static member so that it
8148 can be initialized, the code will reach here. */
8149 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
8150 type
= TREE_TYPE (type
);
8151 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
8152 DECL_CONTEXT (decl
) = basetype
;
8153 DECL_CLASS_CONTEXT (decl
) = basetype
;
8154 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
8158 tree context
= in_namespace
? in_namespace
: current_namespace
;
8159 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
8160 if (context
!= global_namespace
&& namespace_bindings_p ()
8161 && current_lang_name
!= lang_name_c
)
8162 DECL_ASSEMBLER_NAME (decl
) = build_static_name (context
,
8167 set_decl_namespace (decl
, in_namespace
);
8169 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
8171 DECL_THIS_EXTERN (decl
) = 1;
8172 DECL_EXTERNAL (decl
) = !initialized
;
8175 /* In class context, static means one per class,
8176 public access, and static storage. */
8177 if (DECL_CLASS_SCOPE_P (decl
))
8179 TREE_PUBLIC (decl
) = 1;
8180 TREE_STATIC (decl
) = 1;
8181 DECL_EXTERNAL (decl
) = 0;
8183 /* At top level, either `static' or no s.c. makes a definition
8184 (perhaps tentative), and absence of `static' makes it public. */
8185 else if (toplevel_bindings_p ())
8187 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
8188 && (DECL_THIS_EXTERN (decl
) || ! constp
));
8189 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
8191 /* Not at top level, only `static' makes a static definition. */
8194 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
8195 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
8198 if (TREE_PUBLIC (decl
))
8200 /* [basic.link]: A name with no linkage (notably, the name of a class
8201 or enumeration declared in a local scope) shall not be used to
8202 declare an entity with linkage.
8204 Only check this for public decls for now. */
8205 tree t
= no_linkage_check (TREE_TYPE (decl
));
8208 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))
8209 /* Ignore for now; `enum { foo } e' is pretty common. */;
8211 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8219 /* Create a canonical pointer to member function type. */
8222 build_ptrmemfunc_type (type
)
8229 /* If a canonical type already exists for this type, use it. We use
8230 this method instead of type_hash_canon, because it only does a
8231 simple equality check on the list of field members. */
8233 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
8236 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
8238 u
= make_lang_type (UNION_TYPE
);
8239 IS_AGGR_TYPE (u
) = 0;
8240 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
8241 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
8243 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
8244 TYPE_NAME (u
) = NULL_TREE
;
8246 t
= make_lang_type (RECORD_TYPE
);
8248 /* Let the front-end know this is a pointer to member function... */
8249 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
8250 /* ... and not really an aggregate. */
8251 IS_AGGR_TYPE (t
) = 0;
8253 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
8255 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
8257 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
8258 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
8262 /* Zap out the name so that the back-end will give us the debugging
8263 information for this anonymous RECORD_TYPE. */
8264 TYPE_NAME (t
) = NULL_TREE
;
8266 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
8268 /* Seems to be wanted. */
8269 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
8273 /* Given declspecs and a declarator,
8274 determine the name and type of the object declared
8275 and construct a ..._DECL node for it.
8276 (In one case we can return a ..._TYPE node instead.
8277 For invalid input we sometimes return 0.)
8279 DECLSPECS is a chain of tree_list nodes whose value fields
8280 are the storage classes and type specifiers.
8282 DECL_CONTEXT says which syntactic context this declaration is in:
8283 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8284 FUNCDEF for a function definition. Like NORMAL but a few different
8285 error messages in each case. Return value may be zero meaning
8286 this definition is too screwy to try to parse.
8287 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8288 handle member functions (which have FIELD context).
8289 Return value may be zero meaning this definition is too screwy to
8291 PARM for a parameter declaration (either within a function prototype
8292 or before a function body). Make a PARM_DECL, or return void_type_node.
8293 CATCHPARM for a parameter declaration before a catch clause.
8294 TYPENAME if for a typename (in a cast or sizeof).
8295 Don't make a DECL node; just return the ..._TYPE node.
8296 FIELD for a struct or union field; make a FIELD_DECL.
8297 BITFIELD for a field with specified width.
8298 INITIALIZED is 1 if the decl has an initializer.
8300 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8301 It may also be so in the PARM case, for a prototype where the
8302 argument type is specified but not the name.
8304 This function is where the complicated C meanings of `static'
8305 and `extern' are interpreted.
8307 For C++, if there is any monkey business to do, the function which
8308 calls this one must do it, i.e., prepending instance variables,
8309 renaming overloaded function names, etc.
8311 Note that for this C++, it is an error to define a method within a class
8312 which does not belong to that class.
8314 Except in the case where SCOPE_REFs are implicitly known (such as
8315 methods within a class being redundantly qualified),
8316 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8317 (class_name::decl_name). The caller must also deal with this.
8319 If a constructor or destructor is seen, and the context is FIELD,
8320 then the type gains the attribute TREE_HAS_x. If such a declaration
8321 is erroneous, NULL_TREE is returned.
8323 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8324 function, these are the qualifiers to give to the `this' pointer.
8326 May return void_type_node if the declarator turned out to be a friend.
8327 See grokfield for details. */
8329 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
8332 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
8335 enum decl_context decl_context
;
8339 RID_BIT_TYPE specbits
;
8342 tree type
= NULL_TREE
;
8346 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
8347 int explicit_int
= 0;
8348 int explicit_char
= 0;
8349 int defaulted_int
= 0;
8350 int opaque_typedef
= 0;
8351 tree typedef_decl
= NULL_TREE
;
8353 tree typedef_type
= NULL_TREE
;
8354 int funcdef_flag
= 0;
8355 enum tree_code innermost_code
= ERROR_MARK
;
8358 /* See the code below that used this. */
8359 tree decl_machine_attr
= NULL_TREE
;
8361 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8362 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8363 tree init
= NULL_TREE
;
8365 /* Keep track of what sort of function is being processed
8366 so that we can warn about default return values, or explicit
8367 return values which do not match prescribed defaults. */
8368 enum return_types return_type
= return_normal
;
8370 tree dname
= NULL_TREE
;
8371 tree ctype
= current_class_type
;
8372 tree ctor_return_type
= NULL_TREE
;
8373 enum overload_flags flags
= NO_SPECIAL
;
8374 tree quals
= NULL_TREE
;
8375 tree raises
= NULL_TREE
;
8376 int template_count
= 0;
8377 tree in_namespace
= NULL_TREE
;
8379 RIDBIT_RESET_ALL (specbits
);
8380 if (decl_context
== FUNCDEF
)
8381 funcdef_flag
= 1, decl_context
= NORMAL
;
8382 else if (decl_context
== MEMFUNCDEF
)
8383 funcdef_flag
= -1, decl_context
= FIELD
;
8384 else if (decl_context
== BITFIELD
)
8385 bitfield
= 1, decl_context
= FIELD
;
8387 /* Look inside a declarator for the name being declared
8388 and get it as a string, for an error message. */
8390 tree
*next
= &declarator
;
8394 while (next
&& *next
)
8397 switch (TREE_CODE (decl
))
8401 next
= &TREE_OPERAND (decl
, 0);
8404 case BIT_NOT_EXPR
: /* For C++ destructors! */
8406 tree name
= TREE_OPERAND (decl
, 0);
8407 tree rename
= NULL_TREE
;
8409 my_friendly_assert (flags
== NO_SPECIAL
, 152);
8411 return_type
= return_dtor
;
8412 if (TREE_CODE (name
) == TYPE_DECL
)
8413 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
8414 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
8415 if (ctype
== NULL_TREE
)
8417 if (current_class_type
== NULL_TREE
)
8419 error ("destructors must be member functions");
8424 tree t
= constructor_name (current_class_name
);
8431 tree t
= constructor_name (ctype
);
8438 cp_error ("destructor `%T' must match class name `%T'",
8440 TREE_OPERAND (decl
, 0) = rename
;
8446 case ADDR_EXPR
: /* C++ reference declaration */
8451 innermost_code
= TREE_CODE (decl
);
8452 next
= &TREE_OPERAND (decl
, 0);
8456 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
8458 /* This is actually a variable declaration using constructor
8459 syntax. We need to call start_decl and cp_finish_decl so we
8460 can get the variable initialized... */
8462 *next
= TREE_OPERAND (decl
, 0);
8463 init
= TREE_OPERAND (decl
, 1);
8465 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
, NULL_TREE
);
8466 /* Look for __unused__ attribute */
8467 if (TREE_USED (TREE_TYPE (decl
)))
8468 TREE_USED (decl
) = 1;
8469 finish_decl (decl
, init
, NULL_TREE
);
8472 innermost_code
= TREE_CODE (decl
);
8473 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
8474 ctype
= current_class_type
;
8476 && TREE_OPERAND (decl
, 0)
8477 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
8478 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
8479 == constructor_name_full (ctype
))
8480 || (DECL_NAME (TREE_OPERAND (decl
, 0))
8481 == constructor_name (ctype
)))))
8482 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8483 next
= &TREE_OPERAND (decl
, 0);
8485 if (ctype
!= NULL_TREE
8486 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
8487 && decl
== constructor_name (ctype
))
8489 return_type
= return_ctor
;
8490 ctor_return_type
= ctype
;
8495 case TEMPLATE_ID_EXPR
:
8497 tree fns
= TREE_OPERAND (decl
, 0);
8499 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
8500 fns
= TREE_OPERAND (fns
, 0);
8502 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
8504 else if (is_overloaded_fn (fns
))
8505 dname
= DECL_NAME (get_first_fn (fns
));
8507 my_friendly_abort (0);
8511 case IDENTIFIER_NODE
:
8512 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
8519 cp_error ("declarator-id missing; using reserved word `%D'",
8521 name
= IDENTIFIER_POINTER (dname
);
8523 if (! IDENTIFIER_OPNAME_P (dname
)
8524 /* GNU/Linux headers use '__op'. Arrgh. */
8525 || (IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
)))
8526 name
= IDENTIFIER_POINTER (dname
);
8529 if (IDENTIFIER_TYPENAME_P (dname
))
8531 my_friendly_assert (flags
== NO_SPECIAL
, 154);
8532 flags
= TYPENAME_FLAG
;
8533 ctor_return_type
= TREE_TYPE (dname
);
8534 return_type
= return_conversion
;
8536 name
= operator_name_string (dname
);
8543 /* Perform error checking, and decide on a ctype. */
8544 tree cname
= TREE_OPERAND (decl
, 0);
8545 if (cname
== NULL_TREE
)
8547 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
8550 in_namespace
= TREE_OPERAND (decl
, 0);
8551 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8553 else if (! is_aggr_type (cname
, 1))
8554 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8555 /* Must test TREE_OPERAND (decl, 1), in case user gives
8556 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8557 else if (TREE_OPERAND (decl
, 1)
8558 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
8560 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
8561 || TREE_CODE (cname
) == TEMPLATE_TEMPLATE_PARM
)
8563 cp_error ("`%T::%D' is not a valid declarator", cname
,
8564 TREE_OPERAND (decl
, 1));
8565 cp_error (" perhaps you want `typename %T::%D' to make it a type",
8566 cname
, TREE_OPERAND (decl
, 1));
8567 return void_type_node
;
8569 else if (ctype
== NULL_TREE
)
8571 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
8572 TREE_OPERAND (decl
, 0) = ctype
;
8575 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
8577 cp_error ("type `%T' is not derived from type `%T'",
8579 TREE_OPERAND (decl
, 0) = NULL_TREE
;
8585 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
8586 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
8587 == constructor_name_full (ctype
))
8588 || (DECL_NAME (TREE_OPERAND (decl
, 1))
8589 == constructor_name (ctype
))))
8590 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
8591 next
= &TREE_OPERAND (decl
, 1);
8595 if (TREE_CODE (decl
) == IDENTIFIER_NODE
8596 && constructor_name (ctype
) == decl
)
8598 return_type
= return_ctor
;
8599 ctor_return_type
= ctype
;
8601 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
8602 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
8603 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
8604 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
8606 return_type
= return_dtor
;
8607 ctor_return_type
= ctype
;
8609 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
8610 next
= &TREE_OPERAND (decl
, 0);
8621 /* Parse error puts this typespec where
8622 a declarator should go. */
8623 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
8624 if (TREE_TYPE (decl
) == current_class_type
)
8625 cp_error (" perhaps you want `%T' for a constructor",
8626 current_class_name
);
8627 dname
= DECL_NAME (decl
);
8628 name
= IDENTIFIER_POINTER (dname
);
8630 /* Avoid giving two errors for this. */
8631 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
8633 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
8640 cp_compiler_error ("`%D' as declarator", decl
);
8641 return 0; /* We used to do a 155 abort here. */
8648 /* A function definition's declarator must have the form of
8649 a function declarator. */
8651 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
8654 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
8655 && innermost_code
!= CALL_EXPR
8656 && ! (ctype
&& declspecs
== NULL_TREE
))
8658 cp_error ("declaration of `%D' as non-function", dname
);
8659 return void_type_node
;
8662 /* Anything declared one level down from the top level
8663 must be one of the parameters of a function
8664 (because the body is at least two levels down). */
8666 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8667 by not allowing C++ class definitions to specify their parameters
8668 with xdecls (must be spec.d in the parmlist).
8670 Since we now wait to push a class scope until we are sure that
8671 we are in a legitimate method context, we must set oldcname
8672 explicitly (since current_class_name is not yet alive).
8674 We also want to avoid calling this a PARM if it is in a namespace. */
8676 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
8677 && ! pseudo_global_level_p ())
8679 struct binding_level
*b
= current_binding_level
;
8680 current_binding_level
= b
->level_chain
;
8681 if (current_binding_level
!= 0 && toplevel_bindings_p ())
8682 decl_context
= PARM
;
8683 current_binding_level
= b
;
8686 /* Look through the decl specs and record which ones appear.
8687 Some typespecs are defined as built-in typenames.
8688 Others, the ones that are modifiers of other types,
8689 are represented by bits in SPECBITS: set the bits for
8690 the modifiers that appear. Storage class keywords are also in SPECBITS.
8692 If there is a typedef name or a type, store the type in TYPE.
8693 This includes builtin typedefs such as `int'.
8695 Set EXPLICIT_INT if the type is `int' or `char' and did not
8696 come from a user typedef.
8698 Set LONGLONG if `long' is mentioned twice.
8700 For C++, constructors and destructors have their own fast treatment. */
8702 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
8707 /* Certain parse errors slip through. For example,
8708 `int class;' is not caught by the parser. Try
8709 weakly to recover here. */
8710 if (TREE_CODE (spec
) != TREE_LIST
)
8713 id
= TREE_VALUE (spec
);
8715 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8717 if (id
== ridpointers
[(int) RID_INT
]
8718 || id
== ridpointers
[(int) RID_CHAR
]
8719 || id
== ridpointers
[(int) RID_BOOL
]
8720 || id
== ridpointers
[(int) RID_WCHAR
])
8724 if (id
== ridpointers
[(int) RID_BOOL
])
8725 error ("`bool' is now a keyword");
8727 cp_error ("extraneous `%T' ignored", id
);
8731 if (id
== ridpointers
[(int) RID_INT
])
8733 else if (id
== ridpointers
[(int) RID_CHAR
])
8735 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
8739 /* C++ aggregate types. */
8740 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
8743 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8745 type
= IDENTIFIER_TYPE_VALUE (id
);
8749 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8751 if (ridpointers
[i
] == id
)
8753 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8755 if (pedantic
&& ! in_system_header
&& warn_long_long
)
8756 pedwarn ("ANSI C++ does not support `long long'");
8758 error ("`long long long' is too long for GCC");
8762 else if (RIDBIT_SETP (i
, specbits
))
8763 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8764 RIDBIT_SET (i
, specbits
);
8769 /* C++ aggregate types. */
8770 else if (TREE_CODE (id
) == TYPE_DECL
|| TREE_CODE (id
) == TEMPLATE_DECL
)
8773 cp_error ("multiple declarations `%T' and `%T'", type
,
8777 type
= TREE_TYPE (id
);
8778 TREE_VALUE (spec
) = type
;
8783 error ("two or more data types in declaration of `%s'", name
);
8784 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8786 register tree t
= lookup_name (id
, 1);
8787 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8788 error ("`%s' fails to be a typedef or built in type",
8789 IDENTIFIER_POINTER (id
));
8792 type
= TREE_TYPE (t
);
8794 /* See the code below that used this. */
8795 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8800 else if (id
!= error_mark_node
)
8801 /* Can't change CLASS nodes into RECORD nodes here! */
8807 typedef_type
= type
;
8809 /* No type at all: default to `int', and set DEFAULTED_INT
8810 because it was not a user-defined typedef.
8811 Except when we have a `typedef' inside a signature, in
8812 which case the type defaults to `unknown type' and is
8813 instantiated when assigning to a signature pointer or ref. */
8815 if (type
== NULL_TREE
8816 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8817 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8818 || RIDBIT_SETP (RID_LONG
, specbits
)
8819 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8821 /* These imply 'int'. */
8822 type
= integer_type_node
;
8826 if (type
== NULL_TREE
)
8829 if (return_type
== return_dtor
)
8830 type
= void_type_node
;
8831 else if (return_type
== return_ctor
)
8832 type
= build_pointer_type (ctor_return_type
);
8833 else if (return_type
== return_conversion
)
8834 type
= ctor_return_type
;
8835 else if (current_class_type
8836 && IS_SIGNATURE (current_class_type
)
8837 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8838 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8842 type
= copy_node (opaque_type_node
);
8848 if (warn_return_type
8849 && return_type
== return_normal
)
8850 /* Save warning until we know what is really going on. */
8851 warn_about_return_type
= 1;
8853 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8854 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8855 else if (innermost_code
!= CALL_EXPR
|| pedantic
8856 || (warn_return_type
&& return_type
== return_normal
))
8858 if (innermost_code
== CALL_EXPR
)
8859 cp_pedwarn ("return-type of `%D' defaults to `int'", dname
);
8861 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8864 type
= integer_type_node
;
8867 else if (return_type
== return_dtor
)
8869 error ("return type specification for destructor invalid");
8870 type
= void_type_node
;
8872 else if (return_type
== return_ctor
)
8874 error ("return type specification for constructor invalid");
8875 type
= build_pointer_type (ctor_return_type
);
8877 else if (return_type
== return_conversion
)
8879 if (comptypes (type
, ctor_return_type
, 1) == 0)
8880 cp_error ("operator `%T' declared to return `%T'",
8881 ctor_return_type
, type
);
8883 cp_pedwarn ("return type specified for `operator %T'",
8886 type
= ctor_return_type
;
8891 /* Now process the modifiers that were specified
8892 and check for invalid combinations. */
8894 /* Long double is a special combination. */
8896 if (RIDBIT_SETP (RID_LONG
, specbits
)
8897 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
8899 RIDBIT_RESET (RID_LONG
, specbits
);
8900 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
8901 TYPE_VOLATILE (type
));
8904 /* Check all other uses of type modifiers. */
8906 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8907 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8908 || RIDBIT_SETP (RID_LONG
, specbits
)
8909 || RIDBIT_SETP (RID_SHORT
, specbits
))
8913 if (TREE_CODE (type
) == REAL_TYPE
)
8914 error ("short, signed or unsigned invalid for `%s'", name
);
8915 else if (TREE_CODE (type
) != INTEGER_TYPE
)
8916 error ("long, short, signed or unsigned invalid for `%s'", name
);
8917 else if (RIDBIT_SETP (RID_LONG
, specbits
)
8918 && RIDBIT_SETP (RID_SHORT
, specbits
))
8919 error ("long and short specified together for `%s'", name
);
8920 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8921 || RIDBIT_SETP (RID_SHORT
, specbits
))
8923 error ("long or short specified with char for `%s'", name
);
8924 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8925 || RIDBIT_SETP (RID_SHORT
, specbits
))
8926 && TREE_CODE (type
) == REAL_TYPE
)
8927 error ("long or short specified with floating type for `%s'", name
);
8928 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8929 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
8930 error ("signed and unsigned given together for `%s'", name
);
8934 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
8936 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8938 if (flag_pedantic_errors
)
8943 /* Discard the type modifiers if they are invalid. */
8946 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
8947 RIDBIT_RESET (RID_SIGNED
, specbits
);
8948 RIDBIT_RESET (RID_LONG
, specbits
);
8949 RIDBIT_RESET (RID_SHORT
, specbits
);
8954 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
8955 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
8957 error ("complex invalid for `%s'", name
);
8958 RIDBIT_RESET (RID_COMPLEX
, specbits
);
8961 /* Decide whether an integer type is signed or not.
8962 Optionally treat bitfields as signed by default. */
8963 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8964 || (bitfield
&& ! flag_signed_bitfields
8965 && (explicit_int
|| defaulted_int
|| explicit_char
8966 /* A typedef for plain `int' without `signed'
8967 can be controlled just like plain `int'. */
8968 || ! (typedef_decl
!= NULL_TREE
8969 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
8970 && TREE_CODE (type
) != ENUMERAL_TYPE
8971 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
8974 type
= long_long_unsigned_type_node
;
8975 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8976 type
= long_unsigned_type_node
;
8977 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8978 type
= short_unsigned_type_node
;
8979 else if (type
== char_type_node
)
8980 type
= unsigned_char_type_node
;
8981 else if (typedef_decl
)
8982 type
= unsigned_type (type
);
8984 type
= unsigned_type_node
;
8986 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8987 && type
== char_type_node
)
8988 type
= signed_char_type_node
;
8990 type
= long_long_integer_type_node
;
8991 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8992 type
= long_integer_type_node
;
8993 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8994 type
= short_integer_type_node
;
8996 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
8998 /* If we just have "complex", it is equivalent to
8999 "complex double", but if any modifiers at all are specified it is
9000 the complex form of TYPE. E.g, "complex short" is
9001 "complex short int". */
9003 if (defaulted_int
&& ! longlong
9004 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
9005 || RIDBIT_SETP (RID_SHORT
, specbits
)
9006 || RIDBIT_SETP (RID_SIGNED
, specbits
)
9007 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
9008 type
= complex_double_type_node
;
9009 else if (type
== integer_type_node
)
9010 type
= complex_integer_type_node
;
9011 else if (type
== float_type_node
)
9012 type
= complex_float_type_node
;
9013 else if (type
== double_type_node
)
9014 type
= complex_double_type_node
;
9015 else if (type
== long_double_type_node
)
9016 type
= complex_long_double_type_node
;
9018 type
= build_complex_type (type
);
9021 if (return_type
== return_conversion
9022 && (RIDBIT_SETP (RID_CONST
, specbits
)
9023 || RIDBIT_SETP (RID_VOLATILE
, specbits
)))
9024 cp_error ("`operator %T' cannot be cv-qualified",
9027 /* Set CONSTP if this declaration is `const', whether by
9028 explicit specification or via a typedef.
9029 Likewise for VOLATILEP. */
9031 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
9032 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
9033 type
= build_type_variant (type
, 0, 0);
9035 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
9036 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
9037 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
9038 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
9039 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
9041 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9042 staticp
= 1 + (decl_context
== FIELD
);
9044 if (virtualp
&& staticp
== 2)
9046 cp_error ("member `%D' cannot be declared both virtual and static",
9050 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
9051 RIDBIT_RESET (RID_FRIEND
, specbits
);
9053 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9055 if (decl_context
== PARM
)
9057 error ("non-member `%s' cannot be declared `mutable'", name
);
9058 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9060 else if (friendp
|| decl_context
== TYPENAME
)
9062 error ("non-object member `%s' cannot be declared `mutable'", name
);
9063 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9067 /* Warn if two storage classes are given. Default to `auto'. */
9069 if (RIDBIT_ANY_SET (specbits
))
9071 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
9072 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
9073 if (decl_context
== PARM
&& nclasses
> 0)
9074 error ("storage class specifiers invalid in parameter declarations");
9075 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9077 if (decl_context
== PARM
)
9078 error ("typedef declaration invalid in parameter declaration");
9081 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
9082 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
9085 /* Give error if `virtual' is used outside of class declaration. */
9087 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
9089 error ("virtual outside class declaration");
9092 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
9094 error ("only members can be declared mutable");
9095 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9098 /* Static anonymous unions are dealt with here. */
9099 if (staticp
&& decl_context
== TYPENAME
9100 && TREE_CODE (declspecs
) == TREE_LIST
9101 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs
)))
9102 decl_context
= FIELD
;
9104 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9105 is used in a signature member function declaration. */
9106 if (decl_context
== FIELD
9107 && IS_SIGNATURE (current_class_type
)
9108 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
9112 error ("`const' specified for signature member function `%s'", name
);
9117 error ("`volatile' specified for signature member function `%s'",
9123 error ("`inline' specified for signature member function `%s'", name
);
9124 /* Later, we'll make signature member functions inline. */
9129 error ("`friend' declaration in signature definition");
9134 error ("`virtual' specified for signature member function `%s'",
9136 /* Later, we'll make signature member functions virtual. */
9141 /* Warn about storage classes that are invalid for certain
9142 kinds of declarations (parameters, typenames, etc.). */
9145 error ("multiple storage classes in declaration of `%s'", name
);
9146 else if (decl_context
!= NORMAL
&& nclasses
> 0)
9148 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9149 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
9150 || RIDBIT_SETP (RID_AUTO
, specbits
)))
9152 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9154 else if (decl_context
== FIELD
9155 && ! IS_SIGNATURE (current_class_type
)
9156 /* C++ allows static class elements */
9157 && RIDBIT_SETP (RID_STATIC
, specbits
))
9158 /* C++ also allows inlines and signed and unsigned elements,
9159 but in those cases we don't come in here. */
9163 if (decl_context
== FIELD
)
9165 tree tmp
= NULL_TREE
;
9166 register int op
= 0;
9170 /* Avoid trying to get an operand off an identifier node. */
9171 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9174 tmp
= TREE_OPERAND (declarator
, 0);
9175 op
= IDENTIFIER_OPNAME_P (tmp
);
9177 error ("storage class specified for %s `%s'",
9178 IS_SIGNATURE (current_class_type
)
9180 ? "signature member operator"
9181 : "signature member function")
9182 : (op
? "member operator" : "field"),
9183 op
? operator_name_string (tmp
) : name
);
9186 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
9187 ? "storage class specified for parameter `%s'"
9188 : "storage class specified for typename"), name
);
9189 RIDBIT_RESET (RID_REGISTER
, specbits
);
9190 RIDBIT_RESET (RID_AUTO
, specbits
);
9191 RIDBIT_RESET (RID_EXTERN
, specbits
);
9193 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
9195 RIDBIT_RESET (RID_STATIC
, specbits
);
9200 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
9202 if (toplevel_bindings_p ())
9204 /* It's common practice (and completely valid) to have a const
9205 be initialized and declared extern. */
9207 warning ("`%s' initialized and declared `extern'", name
);
9210 error ("`%s' has both `extern' and initializer", name
);
9212 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
9213 && ! toplevel_bindings_p ())
9214 error ("nested function `%s' declared `extern'", name
);
9215 else if (toplevel_bindings_p ())
9217 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9218 error ("top-level declaration of `%s' specifies `auto'", name
);
9221 if (nclasses
> 0 && friendp
)
9222 error ("storage class specifiers invalid in friend function declarations");
9224 /* Now figure out the structure of the declarator proper.
9225 Descend through it, creating more complex types, until we reach
9226 the declared identifier (or NULL_TREE, in an absolute declarator). */
9228 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
9229 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9231 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9232 an INDIRECT_REF (for *...),
9233 a CALL_EXPR (for ...(...)),
9234 an identifier (for the name being declared)
9235 or a null pointer (for the place in an absolute declarator
9236 where the name was omitted).
9237 For the last two cases, we have just exited the loop.
9239 For C++ it could also be
9240 a SCOPE_REF (for class :: ...). In this case, we have converted
9241 sensible names to types, and those are the values we use to
9242 qualify the member name.
9243 an ADDR_EXPR (for &...),
9244 a BIT_NOT_EXPR (for destructors)
9246 At this point, TYPE is the type of elements of an array,
9247 or for a function to return, or for a pointer to point to.
9248 After this sequence of ifs, TYPE is the type of the
9249 array or function or pointer, and DECLARATOR has had its
9250 outermost layer removed. */
9252 if (type
== error_mark_node
)
9254 if (TREE_CODE (declarator
) == SCOPE_REF
)
9255 declarator
= TREE_OPERAND (declarator
, 1);
9257 declarator
= TREE_OPERAND (declarator
, 0);
9260 if (quals
!= NULL_TREE
9261 && (declarator
== NULL_TREE
9262 || TREE_CODE (declarator
) != SCOPE_REF
))
9264 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
9265 ctype
= TYPE_METHOD_BASETYPE (type
);
9266 if (ctype
!= NULL_TREE
)
9268 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
9269 ctype
= grok_method_quals (ctype
, dummy
, quals
);
9270 type
= TREE_TYPE (dummy
);
9274 switch (TREE_CODE (declarator
))
9278 register tree itype
= NULL_TREE
;
9279 register tree size
= TREE_OPERAND (declarator
, 1);
9280 /* The index is a signed object `sizetype' bits wide. */
9281 tree index_type
= signed_type (sizetype
);
9283 declarator
= TREE_OPERAND (declarator
, 0);
9285 /* Check for some types that there cannot be arrays of. */
9287 if (TREE_CODE (type
) == VOID_TYPE
)
9289 cp_error ("declaration of `%D' as array of voids", dname
);
9290 type
= error_mark_node
;
9293 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9295 cp_error ("declaration of `%D' as array of functions", dname
);
9296 type
= error_mark_node
;
9299 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9300 you can't have arrays of references. If we allowed them,
9301 then we'd be saying x[i] is valid for an array x, but
9302 then you'd have to ask: what does `*(x + i)' mean? */
9303 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9305 if (decl_context
== TYPENAME
)
9306 cp_error ("cannot make arrays of references");
9308 cp_error ("declaration of `%D' as array of references",
9310 type
= error_mark_node
;
9313 if (TREE_CODE (type
) == OFFSET_TYPE
)
9315 cp_error ("declaration of `%D' as array of data members",
9317 type
= error_mark_node
;
9320 if (TREE_CODE (type
) == METHOD_TYPE
)
9322 cp_error ("declaration of `%D' as array of function members",
9324 type
= error_mark_node
;
9327 if (size
== error_mark_node
)
9328 type
= error_mark_node
;
9330 if (type
== error_mark_node
)
9335 /* Must suspend_momentary here because the index
9336 type may need to live until the end of the function.
9337 For example, it is used in the declaration of a
9338 variable which requires destructing at the end of
9339 the function; then build_vec_delete will need this
9341 int yes
= suspend_momentary ();
9342 /* Might be a cast. */
9343 if (TREE_CODE (size
) == NOP_EXPR
9344 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
9345 size
= TREE_OPERAND (size
, 0);
9347 /* If this involves a template parameter, it'll be
9348 constant, but we don't know what the value is yet. */
9349 if (processing_template_decl
)
9351 itype
= make_node (INTEGER_TYPE
);
9352 TYPE_MIN_VALUE (itype
) = size_zero_node
;
9353 TYPE_MAX_VALUE (itype
) = build_min
9354 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
9355 goto dont_grok_size
;
9358 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9359 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
9361 cp_error ("size of array `%D' has non-integer type",
9363 size
= integer_one_node
;
9365 if (TREE_READONLY_DECL_P (size
))
9366 size
= decl_constant_value (size
);
9367 if (pedantic
&& integer_zerop (size
))
9368 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
9369 if (TREE_CONSTANT (size
))
9371 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9372 int old_pedantic
= pedantic
;
9373 pedantic
= flag_pedantic_errors
= 1;
9374 /* Always give overflow errors on array subscripts. */
9375 constant_expression_warning (size
);
9376 pedantic
= old_pedantic
;
9377 flag_pedantic_errors
= old_flag_pedantic_errors
;
9378 if (INT_CST_LT (size
, integer_zero_node
))
9380 cp_error ("size of array `%D' is negative", dname
);
9381 size
= integer_one_node
;
9389 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9392 cp_pedwarn ("ANSI C++ forbids variable-size array");
9397 = fold (build_binary_op (MINUS_EXPR
,
9398 cp_convert (index_type
, size
),
9399 cp_convert (index_type
,
9400 integer_one_node
), 1));
9401 if (! TREE_CONSTANT (itype
))
9402 itype
= variable_size (itype
);
9403 else if (TREE_OVERFLOW (itype
))
9405 error ("overflow in array dimension");
9406 TREE_OVERFLOW (itype
) = 0;
9409 /* If we're a parm, we need to have a permanent type so
9410 mangling checks for re-use will work right. If both the
9411 element and index types are permanent, the array type
9413 if (decl_context
== PARM
9414 && allocation_temporary_p () && TREE_PERMANENT (type
))
9416 push_obstacks (&permanent_obstack
, &permanent_obstack
);
9417 itype
= build_index_type (itype
);
9421 itype
= build_index_type (itype
);
9424 resume_momentary (yes
);
9427 /* Build the array type itself, then merge any constancy or
9428 volatility into the target type. We must do it in this order
9429 to ensure that the TYPE_MAIN_VARIANT field of the array type
9430 is set correctly. */
9432 type
= build_cplus_array_type (type
, itype
);
9433 if (constp
|| volatilep
)
9434 type
= cp_build_type_variant (type
, constp
, volatilep
);
9444 tree inner_parms
= TREE_OPERAND (declarator
, 1);
9445 tree inner_decl
= TREE_OPERAND (declarator
, 0);
9447 /* Declaring a function type.
9448 Make sure we have a valid type for the function to return. */
9450 /* Is this an error? Should they be merged into TYPE here? */
9451 if (pedantic
&& (constp
|| volatilep
))
9452 pedwarn ("function declared to return const or volatile result");
9454 /* Merge any constancy or volatility into the function return
9457 if (constp
|| volatilep
)
9459 type
= cp_build_type_variant (type
, constp
, volatilep
);
9460 if (IS_AGGR_TYPE (type
))
9461 build_pointer_type (type
);
9467 /* Warn about some types functions can't return. */
9469 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9471 error ("`%s' declared as function returning a function", name
);
9472 type
= integer_type_node
;
9474 if (TREE_CODE (type
) == ARRAY_TYPE
)
9476 error ("`%s' declared as function returning an array", name
);
9477 type
= integer_type_node
;
9480 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
9481 inner_decl
= TREE_OPERAND (inner_decl
, 1);
9483 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
9486 /* Pick up type qualifiers which should be applied to `this'. */
9487 quals
= TREE_OPERAND (declarator
, 2);
9489 /* Pick up the exception specifications. */
9490 raises
= TREE_TYPE (declarator
);
9492 /* Say it's a definition only for the CALL_EXPR
9493 closest to the identifier. */
9496 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
9497 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
9498 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
9500 if (ctype
== NULL_TREE
9501 && decl_context
== FIELD
9503 && (friendp
== 0 || dname
== current_class_name
))
9504 ctype
= current_class_type
;
9506 if (ctype
&& return_type
== return_conversion
)
9507 TYPE_HAS_CONVERSION (ctype
) = 1;
9508 if (ctype
&& constructor_name (ctype
) == dname
)
9510 /* We are within a class's scope. If our declarator name
9511 is the same as the class name, and we are defining
9512 a function, then it is a constructor/destructor, and
9513 therefore returns a void type. */
9515 if (flags
== DTOR_FLAG
)
9517 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9518 not be declared const or volatile. A destructor
9519 may not be static. */
9521 error ("destructor cannot be static member function");
9524 error ("destructors cannot be declared `const' or `volatile'");
9525 return void_type_node
;
9527 if (decl_context
== FIELD
)
9529 if (! member_function_or_else (ctype
, current_class_type
,
9530 "destructor for alien class `%s' cannot be a member"))
9531 return void_type_node
;
9534 else /* It's a constructor. */
9538 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9539 not be declared const or volatile. A constructor may
9540 not be virtual. A constructor may not be static. */
9542 error ("constructor cannot be static member function");
9545 pedwarn ("constructors cannot be declared virtual");
9550 error ("constructors cannot be declared `const' or `volatile'");
9551 return void_type_node
;
9554 RID_BIT_TYPE tmp_bits
;
9555 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
9556 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
9557 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
9558 if (RIDBIT_ANY_SET (tmp_bits
))
9559 error ("return value type specifier for constructor ignored");
9561 type
= build_pointer_type (ctype
);
9562 if (decl_context
== FIELD
9563 && IS_SIGNATURE (current_class_type
))
9565 error ("constructor not allowed in signature");
9566 return void_type_node
;
9568 else if (decl_context
== FIELD
)
9570 if (! member_function_or_else (ctype
, current_class_type
,
9571 "constructor for alien class `%s' cannot be member"))
9572 return void_type_node
;
9573 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
9574 if (return_type
!= return_ctor
)
9578 if (decl_context
== FIELD
)
9584 error ("can't initialize friend function `%s'", name
);
9587 /* Cannot be both friend and virtual. */
9588 error ("virtual functions cannot be friends");
9589 RIDBIT_RESET (RID_FRIEND
, specbits
);
9592 if (decl_context
== NORMAL
)
9593 error ("friend declaration not in class definition");
9594 if (current_function_decl
&& funcdef_flag
)
9595 cp_error ("can't define friend function `%s' in a local class definition",
9599 /* Construct the function type and go to the next
9600 inner layer of declarator. */
9602 declarator
= TREE_OPERAND (declarator
, 0);
9604 /* FIXME: This is where default args should be fully
9607 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
9611 /* Get past destructors, etc.
9612 We know we have one because FLAGS will be non-zero.
9614 Complain about improper parameter lists here. */
9615 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
9617 declarator
= TREE_OPERAND (declarator
, 0);
9619 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
9620 arg_types
= void_list_node
;
9621 else if (arg_types
== NULL_TREE
9622 || arg_types
!= void_list_node
)
9624 error ("destructors cannot be specified with parameters");
9625 arg_types
= void_list_node
;
9630 /* ANSI says that `const int foo ();'
9631 does not make the function foo const. */
9632 type
= build_function_type (type
, arg_types
);
9636 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
9637 if (TREE_PURPOSE (t
)
9638 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
9640 add_defarg_fn (type
);
9649 /* Filter out pointers-to-references and references-to-references.
9650 We can get these if a TYPE_DECL is used. */
9652 if (TREE_CODE (type
) == REFERENCE_TYPE
)
9654 error ("cannot declare %s to references",
9655 TREE_CODE (declarator
) == ADDR_EXPR
9656 ? "references" : "pointers");
9657 declarator
= TREE_OPERAND (declarator
, 0);
9661 if (TREE_CODE (type
) == OFFSET_TYPE
9662 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
9663 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
9665 cp_error ("cannot declare pointer to `%#T' member",
9667 type
= TREE_TYPE (type
);
9670 /* Merge any constancy or volatility into the target type
9673 if (constp
|| volatilep
)
9675 /* A const or volatile signature pointer/reference is
9676 pointing to a const or volatile object, i.e., the
9677 `optr' is const or volatile, respectively, not the
9678 signature pointer/reference itself. */
9679 if (! IS_SIGNATURE (type
))
9681 type
= cp_build_type_variant (type
, constp
, volatilep
);
9682 if (IS_AGGR_TYPE (type
))
9683 build_pointer_type (type
);
9689 if (IS_SIGNATURE (type
))
9691 if (TREE_CODE (declarator
) == ADDR_EXPR
)
9693 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9694 && TYPE_SIZE (type
))
9695 cp_warning ("empty signature `%T' used in signature reference declaration",
9698 type
= build_signature_reference_type (type
,
9701 sorry ("signature reference");
9707 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
9708 && TYPE_SIZE (type
))
9709 cp_warning ("empty signature `%T' used in signature pointer declaration",
9711 type
= build_signature_pointer_type (type
,
9717 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
9719 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9721 error ("cannot declare references to functions; use pointer to function instead");
9722 type
= build_pointer_type (type
);
9726 if (TREE_CODE (type
) == VOID_TYPE
)
9727 error ("invalid type: `void &'");
9729 type
= build_reference_type (type
);
9732 else if (TREE_CODE (type
) == METHOD_TYPE
)
9734 type
= build_ptrmemfunc_type (build_pointer_type (type
));
9737 type
= build_pointer_type (type
);
9739 /* Process a list of type modifier keywords (such as
9740 const or volatile) that were given inside the `*' or `&'. */
9742 if (TREE_TYPE (declarator
))
9744 register tree typemodlist
;
9746 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
9747 typemodlist
= TREE_CHAIN (typemodlist
))
9749 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
9751 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9756 error ("invalid type modifier within %s declarator",
9757 TREE_CODE (declarator
) == ADDR_EXPR
9758 ? "reference" : "pointer");
9762 pedwarn ("duplicate `const'");
9764 pedwarn ("duplicate `volatile'");
9765 if (TREE_CODE (declarator
) == ADDR_EXPR
9766 && (constp
|| volatilep
))
9769 pedwarn ("discarding `const' applied to a reference");
9771 pedwarn ("discarding `volatile' applied to a reference");
9772 constp
= volatilep
= 0;
9775 declarator
= TREE_OPERAND (declarator
, 0);
9781 /* We have converted type names to NULL_TREE if the
9782 name was bogus, or to a _TYPE node, if not.
9784 The variable CTYPE holds the type we will ultimately
9785 resolve to. The code here just needs to build
9786 up appropriate member types. */
9787 tree sname
= TREE_OPERAND (declarator
, 1);
9790 /* Destructors can have their visibilities changed as well. */
9791 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9792 sname
= TREE_OPERAND (sname
, 0);
9794 if (TREE_COMPLEXITY (declarator
) == 0)
9795 /* This needs to be here, in case we are called
9796 multiple times. */ ;
9797 else if (TREE_COMPLEXITY (declarator
) == -1)
9798 /* Namespace member. */
9799 pop_decl_namespace ();
9800 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9801 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9802 else if (! IS_AGGR_TYPE_CODE
9803 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9805 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9807 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9808 that refer to ctype. They couldn't be resolved earlier
9809 because we hadn't pushed into the class yet.
9810 Example: resolve 'B<T>::type' in
9811 'B<typename B<T>::type> B<T>::f () { }'. */
9812 if (current_template_parms
9813 && uses_template_parms (type
)
9814 && uses_template_parms (current_class_type
))
9816 tree args
= current_template_args ();
9817 type
= tsubst (type
, args
, NULL_TREE
);
9820 /* This pop_nested_class corresponds to the
9821 push_nested_class used to push into class scope for
9822 parsing the argument list of a function decl, in
9824 pop_nested_class (1);
9825 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9828 my_friendly_abort (16);
9830 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9832 /* We had a reference to a global decl, or
9833 perhaps we were given a non-aggregate typedef,
9834 in which case we cleared this out, and should just
9835 keep going as though it wasn't there. */
9839 ctype
= TREE_OPERAND (declarator
, 0);
9842 while (t
!= NULL_TREE
)
9844 if (CLASSTYPE_TEMPLATE_INFO (t
) &&
9845 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t
))
9846 template_count
+= 1;
9847 t
= TYPE_MAIN_DECL (t
);
9848 if (DECL_LANG_SPECIFIC (t
))
9849 t
= DECL_CLASS_CONTEXT (t
);
9854 if (sname
== NULL_TREE
)
9857 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9859 /* This is the `standard' use of the scoping operator:
9860 basetype :: member . */
9862 if (ctype
== current_class_type
)
9868 Is this ill-formed? */
9871 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9874 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9876 if (current_class_type
== NULL_TREE
9878 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9879 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9882 cp_error ("cannot declare member function `%T::%s' within `%T'",
9883 ctype
, name
, current_class_type
);
9884 return void_type_node
;
9887 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9888 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9890 /* Have to move this code elsewhere in this function.
9891 this code is used for i.e., typedef int A::M; M *pm;
9893 It is? How? jason 10/2/94 */
9895 if (current_class_type
)
9897 cp_error ("cannot declare member `%T::%s' within `%T'",
9898 ctype
, name
, current_class_type
);
9899 return void_type_node
;
9901 type
= build_offset_type (ctype
, type
);
9903 else if (uses_template_parms (ctype
))
9905 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9907 = build_cplus_method_type (build_type_variant (ctype
,
9911 TYPE_ARG_TYPES (type
));
9915 cp_error ("structure `%T' not yet defined", ctype
);
9916 return error_mark_node
;
9921 else if (TREE_CODE (sname
) == SCOPE_REF
)
9922 my_friendly_abort (17);
9926 declarator
= TREE_OPERAND (declarator
, 1);
9927 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9928 /* In this case, we will deal with it later. */
9932 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9933 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9935 type
= build_offset_type (ctype
, type
);
9942 declarator
= TREE_OPERAND (declarator
, 0);
9948 declarator
= NULL_TREE
;
9952 declarator
= NULL_TREE
;
9956 my_friendly_abort (158);
9962 error ("only constructors can be declared `explicit'");
9966 /* Now TYPE has the actual type. */
9968 /* If this is declaring a typedef name, return a TYPE_DECL. */
9970 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9974 error ("const `%s' cannot be declared `mutable'", name
);
9975 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9979 error ("static `%s' cannot be declared `mutable'", name
);
9980 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9984 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
9988 /* Note that the grammar rejects storage classes
9989 in typenames, fields or parameters. */
9990 if (constp
|| volatilep
)
9991 type
= cp_build_type_variant (type
, constp
, volatilep
);
9992 if (current_lang_name
== lang_name_java
)
9993 TYPE_FOR_JAVA (type
) = 1;
9995 if (decl_context
== FIELD
)
9997 if (declarator
== current_class_name
)
9998 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
10000 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
10001 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
10002 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
10006 /* Make sure this typedef lives as long as its type,
10007 since it might be used as a template parameter. */
10008 if (type
!= error_mark_node
)
10009 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
10010 decl
= build_decl (TYPE_DECL
, declarator
, type
);
10011 if (type
!= error_mark_node
)
10015 /* If the user declares "struct {...} foo" then `foo' will have
10016 an anonymous name. Fill that name in now. Nothing can
10017 refer to it, so nothing needs know about the name change.
10018 The TYPE_NAME field was filled in by build_struct_xref. */
10019 if (type
!= error_mark_node
10020 && TYPE_NAME (type
)
10021 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
10022 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
10024 /* For anonymous structs that are cv-qualified, need to use
10025 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10026 type not referenced after this block, don't bother
10027 resetting type to original type, ie. TREE_TYPE (decl). */
10028 type
= TYPE_MAIN_VARIANT (type
);
10030 /* Replace the anonymous name with the real name everywhere. */
10031 lookup_tag_reverse (type
, declarator
);
10032 TYPE_NAME (type
) = decl
;
10034 if (TYPE_LANG_SPECIFIC (type
))
10035 TYPE_WAS_ANONYMOUS (type
) = 1;
10037 /* XXX Temporarily set the scope.
10038 When returning, start_decl expects it as NULL_TREE,
10039 and will then then set it using pushdecl. */
10040 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 980404);
10041 if (current_class_type
)
10042 DECL_CONTEXT (decl
) = current_class_type
;
10044 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
10046 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
10047 DECL_ASSEMBLER_NAME (decl
)
10048 = get_identifier (build_overload_name (type
, 1, 1));
10049 DECL_CONTEXT (decl
) = NULL_TREE
;
10051 /* FIXME remangle member functions; member functions of a
10052 type with external linkage have external linkage. */
10055 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10057 cp_error_at ("typedef name may not be class-qualified", decl
);
10062 if (ctype
== NULL_TREE
)
10064 if (TREE_CODE (type
) != METHOD_TYPE
)
10065 cp_error_at ("invalid type qualifier for non-method type", decl
);
10067 ctype
= TYPE_METHOD_BASETYPE (type
);
10069 if (ctype
!= NULL_TREE
)
10070 grok_method_quals (ctype
, decl
, quals
);
10073 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10074 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
10075 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
10077 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10079 error ("non-object member `%s' cannot be declared mutable", name
);
10082 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
10083 inlinep
, friendp
, raises
!= NULL_TREE
);
10086 error ("typedef declaration includes an initializer");
10091 /* Detect the case of an array type of unspecified size
10092 which came, as such, direct from a typedef name.
10093 We must copy the type, so that each identifier gets
10094 a distinct type, so that each identifier's size can be
10095 controlled separately by its own initializer. */
10097 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
10098 && TYPE_DOMAIN (type
) == NULL_TREE
)
10100 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
10103 /* If this is a type name (such as, in a cast or sizeof),
10104 compute the type and return it now. */
10106 if (decl_context
== TYPENAME
)
10108 /* Note that the grammar rejects storage classes
10109 in typenames, fields or parameters. */
10110 if (constp
|| volatilep
)
10112 if (IS_SIGNATURE (type
))
10113 error ("`const' or `volatile' specified with signature type");
10115 type
= cp_build_type_variant (type
, constp
, volatilep
);
10118 /* Special case: "friend class foo" looks like a TYPENAME context. */
10123 cp_error ("`volatile' specified for friend class declaration");
10128 cp_error ("`inline' specified for friend class declaration");
10132 /* Only try to do this stuff if we didn't already give up. */
10133 if (type
!= integer_type_node
)
10135 /* A friendly class? */
10136 if (current_class_type
)
10137 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
10139 error ("trying to make class `%s' a friend of global scope",
10140 TYPE_NAME_STRING (type
));
10141 type
= void_type_node
;
10146 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
10147 if (ctype
== NULL_TREE
)
10149 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
10150 ctype
= TYPE_METHOD_BASETYPE (type
);
10152 grok_method_quals (ctype
, dummy
, quals
);
10153 type
= TREE_TYPE (dummy
);
10158 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
10159 && decl_context
!= CATCHPARM
10160 && TREE_CODE (type
) != UNION_TYPE
10163 cp_error ("abstract declarator `%T' used as declaration", type
);
10164 declarator
= make_anon_name ();
10167 /* `void' at top level (not within pointer)
10168 is allowed only in typedefs or type names.
10169 We don't complain about parms either, but that is because
10170 a better error message can be made later. */
10172 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
10175 error ("unnamed variable or field declared void");
10176 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10178 if (IDENTIFIER_OPNAME_P (declarator
))
10179 my_friendly_abort (356);
10181 error ("variable or field `%s' declared void", name
);
10184 error ("variable or field declared void");
10185 type
= integer_type_node
;
10188 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10189 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10192 register tree decl
;
10194 if (decl_context
== PARM
)
10196 if (ctype
|| in_namespace
)
10197 error ("cannot use `::' in parameter declaration");
10199 /* A parameter declared as an array of T is really a pointer to T.
10200 One declared as a function is really a pointer to a function.
10201 One declared as a member is really a pointer to member. */
10203 if (TREE_CODE (type
) == ARRAY_TYPE
)
10205 /* Transfer const-ness of array into that of type pointed to. */
10206 type
= build_pointer_type
10207 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10208 volatilep
= constp
= 0;
10210 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10211 type
= build_pointer_type (type
);
10212 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10213 type
= build_pointer_type (type
);
10214 else if (TREE_CODE (type
) == VOID_TYPE
&& declarator
)
10216 error ("declaration of `%s' as void", name
);
10220 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
10222 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
10223 inlinep
, friendp
, raises
!= NULL_TREE
);
10224 if (current_class_type
10225 && IS_SIGNATURE (current_class_type
))
10228 error ("parameter of signature member function declared `inline'");
10229 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10230 error ("parameter of signature member function declared `auto'");
10231 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10232 error ("parameter of signature member function declared `register'");
10235 /* Compute the type actually passed in the parmlist,
10236 for the case where there is no prototype.
10237 (For example, shorts and chars are passed as ints.)
10238 When there is a prototype, this is overridden later. */
10240 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
10242 else if (decl_context
== FIELD
)
10244 if (type
== error_mark_node
)
10246 /* Happens when declaring arrays of sizes which
10247 are error_mark_node, for example. */
10250 else if (in_namespace
)
10252 /* Something like struct S { int N::j; }; */
10253 cp_error ("invalid use of `::'");
10256 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10259 tree function_context
;
10261 /* We catch the others as conflicts with the builtin
10263 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
10265 cp_error ("function `%D' cannot be declared friend",
10272 if (ctype
== NULL_TREE
)
10273 ctype
= current_class_type
;
10275 if (ctype
== NULL_TREE
)
10277 cp_error ("can't make `%D' into a method -- not in a class",
10279 return void_type_node
;
10282 /* ``A union may [ ... ] not [ have ] virtual functions.''
10284 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
10286 cp_error ("function `%D' declared virtual inside a union",
10288 return void_type_node
;
10291 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
10292 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
10293 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
10294 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10298 cp_error ("`%D' cannot be declared virtual, since it is always static",
10303 else if (staticp
< 2)
10304 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10305 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10308 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10309 function_context
= (ctype
!= NULL_TREE
) ?
10310 hack_decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
10311 publicp
= (! friendp
|| ! staticp
)
10312 && function_context
== NULL_TREE
;
10313 decl
= grokfndecl (ctype
, type
,
10314 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
10315 ? declarator
: dname
,
10317 virtualp
, flags
, quals
, raises
, attrlist
,
10318 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
10319 funcdef_flag
, template_count
, in_namespace
);
10320 if (decl
== NULL_TREE
)
10323 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10324 /* The decl and setting of decl_machine_attr is also turned off. */
10325 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
10328 if (explicitp
== 2)
10329 DECL_NONCONVERTING_P (decl
) = 1;
10331 else if (TREE_CODE (type
) == METHOD_TYPE
)
10333 /* We only get here for friend declarations of
10334 members of other classes. */
10335 /* All method decls are public, so tell grokfndecl to set
10336 TREE_PUBLIC, also. */
10337 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
10338 virtualp
, flags
, quals
, raises
, attrlist
,
10339 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
10340 template_count
, in_namespace
);
10341 if (decl
== NULL_TREE
)
10344 else if (!staticp
&& ! processing_template_decl
10345 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
10346 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
10349 cp_error ("field `%D' has incomplete type", declarator
);
10351 cp_error ("name `%T' has incomplete type", type
);
10353 /* If we're instantiating a template, tell them which
10354 instantiation made the field's type be incomplete. */
10355 if (current_class_type
10356 && TYPE_NAME (current_class_type
)
10357 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
10358 && declspecs
&& TREE_VALUE (declspecs
)
10359 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
10360 cp_error (" in instantiation of template `%T'",
10361 current_class_type
);
10363 type
= error_mark_node
;
10370 error ("`%s' is neither function nor method; cannot be declared friend",
10371 IDENTIFIER_POINTER (declarator
));
10379 /* Friends are treated specially. */
10380 if (ctype
== current_class_type
)
10381 warning ("member functions are implicitly friends of their class");
10384 tree t
= NULL_TREE
;
10385 if (decl
&& DECL_NAME (decl
))
10387 if (template_class_depth (current_class_type
) == 0)
10389 = check_explicit_specialization
10391 template_count
, 2 * (funcdef_flag
!= 0) + 4);
10392 t
= do_friend (ctype
, declarator
, decl
,
10393 last_function_parms
, flags
, quals
,
10396 if (t
&& funcdef_flag
)
10399 return void_type_node
;
10403 /* Structure field. It may not be a function, except for C++ */
10405 if (decl
== NULL_TREE
)
10411 /* An attempt is being made to initialize a non-static
10412 member. But, from [class.mem]:
10414 4 A member-declarator can contain a
10415 constant-initializer only if it declares a static
10416 member (_class.static_) of integral or enumeration
10417 type, see _class.static.data_.
10419 This used to be relatively common practice, but
10420 the rest of the compiler does not correctly
10421 handle the initialization unless the member is
10422 static so we make it static below. */
10423 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
10424 constp
? "const member" : "member",
10426 cp_pedwarn ("making `%D' static", declarator
);
10430 /* Motion 10 at San Diego: If a static const integral data
10431 member is initialized with an integral constant
10432 expression, the initializer may appear either in the
10433 declaration (within the class), or in the definition,
10434 but not both. If it appears in the class, the member is
10435 a member constant. The file-scope definition is always
10437 if (CLASS_TYPE_P (type
)
10438 || TREE_CODE (type
) == REFERENCE_TYPE
)
10440 cp_error ("in-class initialization of static data member of non-integral type `%T'",
10442 /* If we just return the declaration, crashes will
10443 sometimes occur. We therefore return
10444 void_type_node, as if this was a friend
10445 declaration, to cause callers to completely
10446 ignore this declaration. */
10447 return void_type_node
;
10450 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
10452 else if (pedantic
&& ! INTEGRAL_TYPE_P (type
)
10453 && !uses_template_parms (type
))
10454 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator
, type
);
10459 /* ANSI C++ Apr '95 wp 9.2 */
10460 if (declarator
== current_class_name
)
10461 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
10464 /* C++ allows static class members.
10465 All other work for this is done by grokfield.
10466 This VAR_DCL is built by build_lang_field_decl.
10467 All other VAR_DECLs are built by build_decl. */
10468 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
10469 TREE_STATIC (decl
) = 1;
10470 /* In class context, 'static' means public access. */
10471 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
10475 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
10476 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10478 DECL_MUTABLE_P (decl
) = 1;
10479 RIDBIT_RESET (RID_MUTABLE
, specbits
);
10483 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
10484 inlinep
, friendp
, raises
!= NULL_TREE
);
10487 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
10489 tree original_name
;
10495 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
10496 original_name
= dname
;
10498 original_name
= declarator
;
10500 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10501 error ("storage class `auto' invalid for function `%s'", name
);
10502 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10503 error ("storage class `register' invalid for function `%s'", name
);
10505 /* Function declaration not at top level.
10506 Storage classes other than `extern' are not allowed
10507 and `extern' makes no difference. */
10508 if (! toplevel_bindings_p ()
10509 && (RIDBIT_SETP (RID_STATIC
, specbits
)
10510 || RIDBIT_SETP (RID_INLINE
, specbits
))
10513 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10514 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
10516 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
10519 if (ctype
== NULL_TREE
)
10523 error ("virtual non-class function `%s'", name
);
10527 if (current_lang_name
== lang_name_cplusplus
10528 && ! processing_template_decl
10529 && ! MAIN_NAME_P (original_name
)
10530 && ! (IDENTIFIER_LENGTH (original_name
) > 10
10531 && IDENTIFIER_POINTER (original_name
)[0] == '_'
10532 && IDENTIFIER_POINTER (original_name
)[1] == '_'
10533 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
10534 /* Plain overloading: will not be grok'd by grokclassfn. */
10535 if (name_mangling_version
< 1
10536 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10537 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
10539 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
10540 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
10541 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
10543 /* Record presence of `static'. */
10544 publicp
= (ctype
!= NULL_TREE
10545 || RIDBIT_SETP (RID_EXTERN
, specbits
)
10546 || !RIDBIT_SETP (RID_STATIC
, specbits
));
10548 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
10549 virtualp
, flags
, quals
, raises
, attrlist
,
10551 publicp
, inlinep
, funcdef_flag
,
10552 template_count
, in_namespace
);
10553 if (decl
== NULL_TREE
)
10556 /* Among other times, could occur from check_explicit_specialization
10557 returning an error_mark_node. */
10558 if (decl
== error_mark_node
)
10559 return error_mark_node
;
10561 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
10562 && (! DECL_USE_TEMPLATE (decl
) ||
10563 name_mangling_version
< 1))
10564 DECL_ASSEMBLER_NAME (decl
) = declarator
;
10568 int illegal_static
= 0;
10570 /* Don't allow a static member function in a class, and forbid
10571 declaring main to be static. */
10572 if (TREE_CODE (type
) == METHOD_TYPE
)
10574 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
10575 illegal_static
= 1;
10577 else if (current_function_decl
)
10579 /* FIXME need arm citation */
10580 error ("cannot declare static function inside another function");
10581 illegal_static
= 1;
10584 if (illegal_static
)
10587 RIDBIT_RESET (RID_STATIC
, specbits
);
10593 /* It's a variable. */
10595 if (decl_context
== CATCHPARM
)
10600 error ("cannot use `::' in parameter declaration");
10603 /* A parameter declared as an array of T is really a pointer to T.
10604 One declared as a function is really a pointer to a function.
10605 One declared as a member is really a pointer to member. */
10607 if (TREE_CODE (type
) == ARRAY_TYPE
)
10609 /* Transfer const-ness of array into that of type
10611 type
= build_pointer_type
10612 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
10613 volatilep
= constp
= 0;
10615 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10616 type
= build_pointer_type (type
);
10617 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10618 type
= build_pointer_type (type
);
10621 /* An uninitialized decl with `extern' is a reference. */
10622 decl
= grokvardecl (type
, declarator
, &specbits
,
10623 initialized
, constp
, in_namespace
);
10624 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
10625 inlinep
, friendp
, raises
!= NULL_TREE
);
10629 DECL_CONTEXT (decl
) = ctype
;
10632 cp_pedwarn ("static member `%D' re-declared as static", decl
);
10634 RIDBIT_RESET (RID_STATIC
, specbits
);
10636 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
10638 cp_error ("static member `%D' declared `register'", decl
);
10639 RIDBIT_RESET (RID_REGISTER
, specbits
);
10641 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
10643 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10645 RIDBIT_RESET (RID_EXTERN
, specbits
);
10650 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
10652 error ("`%s' cannot be declared mutable", name
);
10655 /* Record `register' declaration for warnings on &
10656 and in case doing stupid register allocation. */
10658 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
10659 DECL_REGISTER (decl
) = 1;
10661 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
10662 DECL_THIS_EXTERN (decl
) = 1;
10664 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10665 DECL_THIS_STATIC (decl
) = 1;
10667 /* Record constancy and volatility. */
10670 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
10673 TREE_SIDE_EFFECTS (decl
) = 1;
10674 TREE_THIS_VOLATILE (decl
) = 1;
10681 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10682 An empty exprlist is a parmlist. An exprlist which
10683 contains only identifiers at the global level
10684 is a parmlist. Otherwise, it is an exprlist. */
10687 parmlist_is_exprlist (exprs
)
10690 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
10693 if (toplevel_bindings_p ())
10695 /* At the global level, if these are all identifiers,
10696 then it is a parmlist. */
10699 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
10701 exprs
= TREE_CHAIN (exprs
);
10708 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10711 C++: also subroutine of `start_function'. */
10714 require_complete_types_for_parms (parms
)
10717 if (processing_template_decl
)
10722 tree type
= TREE_TYPE (parms
);
10723 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
10725 if (DECL_NAME (parms
))
10726 error ("parameter `%s' has incomplete type",
10727 IDENTIFIER_POINTER (DECL_NAME (parms
)));
10729 error ("parameter has incomplete type");
10730 TREE_TYPE (parms
) = error_mark_node
;
10733 /* If the arg types are incomplete in a declaration,
10734 they must include undefined tags.
10735 These tags can never be defined in the scope of the declaration,
10736 so the types can never be completed,
10737 and no call can be compiled successfully. */
10738 /* This is not the right behavior for C++, but not having
10739 it is also probably wrong. */
10742 /* Now warn if is a pointer to an incomplete type. */
10743 while (TREE_CODE (type
) == POINTER_TYPE
10744 || TREE_CODE (type
) == REFERENCE_TYPE
)
10745 type
= TREE_TYPE (type
);
10746 type
= TYPE_MAIN_VARIANT (type
);
10747 if (TYPE_SIZE (type
) == NULL_TREE
)
10749 if (DECL_NAME (parm
) != NULL_TREE
)
10750 warning ("parameter `%s' points to incomplete type",
10751 IDENTIFIER_POINTER (DECL_NAME (parm
)));
10753 warning ("parameter points to incomplete type");
10757 parms
= TREE_CHAIN (parms
);
10761 /* Decode the list of parameter types for a function type.
10762 Given the list of things declared inside the parens,
10763 return a list of types.
10765 The list we receive can have three kinds of elements:
10766 an IDENTIFIER_NODE for names given without types,
10767 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10768 or void_type_node, to mark the end of an argument list
10769 when additional arguments are not permitted (... was not used).
10771 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10772 a mere declaration. A nonempty identifier-list gets an error message
10773 when FUNCDEF_FLAG is zero.
10774 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10775 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10777 If all elements of the input list contain types,
10778 we return a list of the types.
10779 If all elements contain no type (except perhaps a void_type_node
10780 at the end), we return a null list.
10781 If some have types and some do not, it is an error, and we
10782 return a null list.
10784 Also set last_function_parms to either
10785 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10786 A list of names is converted to a chain of PARM_DECLs
10787 by store_parm_decls so that ultimately it is always a chain of decls.
10789 Note that in C++, parameters can take default values. These default
10790 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10791 an error to specify default values which are followed by parameters
10792 that have no default values, or an ELLIPSES. For simplicities sake,
10793 only parameters which are specified with their types can take on
10797 grokparms (first_parm
, funcdef_flag
)
10801 tree result
= NULL_TREE
;
10802 tree decls
= NULL_TREE
;
10804 if (first_parm
!= NULL_TREE
10805 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
10807 if (! funcdef_flag
)
10808 pedwarn ("parameter names (without types) in function declaration");
10809 last_function_parms
= first_parm
;
10812 else if (first_parm
!= NULL_TREE
10813 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
10814 && TREE_CODE (TREE_VALUE (first_parm
)) != VOID_TYPE
)
10815 my_friendly_abort (145);
10818 /* Types were specified. This is a list of declarators
10819 each represented as a TREE_LIST node. */
10820 register tree parm
, chain
;
10821 int any_init
= 0, any_error
= 0;
10823 if (first_parm
!= NULL_TREE
)
10825 tree last_result
= NULL_TREE
;
10826 tree last_decl
= NULL_TREE
;
10828 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10830 tree type
= NULL_TREE
, list_node
= parm
;
10831 register tree decl
= TREE_VALUE (parm
);
10832 tree init
= TREE_PURPOSE (parm
);
10834 chain
= TREE_CHAIN (parm
);
10835 /* @@ weak defense against parse errors. */
10836 if (TREE_CODE (decl
) != VOID_TYPE
10837 && TREE_CODE (decl
) != TREE_LIST
)
10839 /* Give various messages as the need arises. */
10840 if (TREE_CODE (decl
) == STRING_CST
)
10841 cp_error ("invalid string constant `%E'", decl
);
10842 else if (TREE_CODE (decl
) == INTEGER_CST
)
10843 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10847 if (TREE_CODE (decl
) != VOID_TYPE
)
10849 decl
= grokdeclarator (TREE_VALUE (decl
),
10850 TREE_PURPOSE (decl
),
10851 PARM
, init
!= NULL_TREE
,
10855 type
= TREE_TYPE (decl
);
10856 if (TREE_CODE (type
) == VOID_TYPE
)
10857 decl
= void_type_node
;
10858 else if (TREE_CODE (type
) == METHOD_TYPE
)
10860 if (DECL_NAME (decl
))
10861 /* Cannot use the decl here because
10862 we don't have DECL_CONTEXT set up yet. */
10863 cp_error ("parameter `%D' invalidly declared method type",
10866 error ("parameter invalidly declared method type");
10867 type
= build_pointer_type (type
);
10868 TREE_TYPE (decl
) = type
;
10870 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10872 if (DECL_NAME (decl
))
10873 cp_error ("parameter `%D' invalidly declared offset type",
10876 error ("parameter invalidly declared offset type");
10877 type
= build_pointer_type (type
);
10878 TREE_TYPE (decl
) = type
;
10880 else if (TREE_CODE (type
) == RECORD_TYPE
10881 && TYPE_LANG_SPECIFIC (type
)
10882 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10884 abstract_virtuals_error (decl
, type
);
10885 any_error
= 1; /* Seems like a good idea. */
10887 else if (TREE_CODE (type
) == RECORD_TYPE
10888 && TYPE_LANG_SPECIFIC (type
)
10889 && IS_SIGNATURE (type
))
10891 signature_error (decl
, type
);
10892 any_error
= 1; /* Seems like a good idea. */
10894 else if (POINTER_TYPE_P (type
))
10897 while (POINTER_TYPE_P (t
)
10898 || (TREE_CODE (t
) == ARRAY_TYPE
10899 && TYPE_DOMAIN (t
) != NULL_TREE
))
10901 if (TREE_CODE (t
) == ARRAY_TYPE
)
10902 cp_error ("parameter type `%T' includes pointer to array of unknown bound",
10907 if (TREE_CODE (decl
) == VOID_TYPE
)
10909 if (result
== NULL_TREE
)
10911 result
= void_list_node
;
10912 last_result
= result
;
10916 TREE_CHAIN (last_result
) = void_list_node
;
10917 last_result
= void_list_node
;
10920 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10921 error ("`void' in parameter list must be entire list");
10925 /* Since there is a prototype, args are passed in their own types. */
10926 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10927 #ifdef PROMOTE_PROTOTYPES
10928 if ((TREE_CODE (type
) == INTEGER_TYPE
10929 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10930 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10931 DECL_ARG_TYPE (decl
) = integer_type_node
;
10938 if (TREE_CODE (init
) == SAVE_EXPR
)
10939 PARM_DECL_EXPR (init
) = 1;
10940 else if (processing_template_decl
)
10942 /* Unparsed default arg from in-class decl. */
10943 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10945 else if (TREE_CODE (init
) == VAR_DECL
10946 || TREE_CODE (init
) == PARM_DECL
)
10948 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10950 /* ``Local variables may not be used in default
10951 argument expressions.'' dpANSI C++ 8.2.6 */
10952 /* If extern int i; within a function is not
10953 considered a local variable, then this code is
10955 cp_error ("local variable `%D' may not be used as a default argument", init
);
10958 else if (TREE_READONLY_DECL_P (init
))
10959 init
= decl_constant_value (init
);
10962 init
= require_instantiated_type (type
, init
, integer_zero_node
);
10963 if (! processing_template_decl
10964 && init
!= error_mark_node
10965 && TREE_CODE (init
) != DEFAULT_ARG
10966 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
10967 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10968 TREE_TYPE (init
), decl
);
10974 if (decls
== NULL_TREE
)
10981 TREE_CHAIN (last_decl
) = decl
;
10984 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
10986 TREE_PURPOSE (list_node
) = init
;
10987 TREE_VALUE (list_node
) = type
;
10988 TREE_CHAIN (list_node
) = NULL_TREE
;
10991 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
10992 if (result
== NULL_TREE
)
10994 result
= list_node
;
10995 last_result
= result
;
10999 TREE_CHAIN (last_result
) = list_node
;
11000 last_result
= list_node
;
11004 TREE_CHAIN (last_result
) = NULL_TREE
;
11005 /* If there are no parameters, and the function does not end
11006 with `...', then last_decl will be NULL_TREE. */
11007 if (last_decl
!= NULL_TREE
)
11008 TREE_CHAIN (last_decl
) = NULL_TREE
;
11012 last_function_parms
= decls
;
11014 /* In a fcn definition, arg types must be complete. */
11015 if (funcdef_flag
> 0)
11016 require_complete_types_for_parms (last_function_parms
);
11021 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11022 FUNCTION_TYPE with the newly parsed version of its default argument, which
11023 was previously digested as text. See snarf_defarg et al in lex.c. */
11026 replace_defarg (arg
, init
)
11029 if (! processing_template_decl
11030 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
11031 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11032 TREE_TYPE (init
), TREE_VALUE (arg
));
11033 TREE_PURPOSE (arg
) = init
;
11040 tree t
= FUNCTION_ARG_CHAIN (d
);
11041 if (DECL_CONSTRUCTOR_P (d
)
11042 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d
)))
11043 t
= TREE_CHAIN (t
);
11044 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
11045 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
11046 == DECL_CLASS_CONTEXT (d
))
11047 && (TREE_CHAIN (t
) == NULL_TREE
11048 || TREE_CHAIN (t
) == void_list_node
11049 || TREE_PURPOSE (TREE_CHAIN (t
))))
11054 /* These memoizing functions keep track of special properties which
11055 a class may have. `grok_ctor_properties' notices whether a class
11056 has a constructor of the form X(X&), and also complains
11057 if the class has a constructor of the form X(X).
11058 `grok_op_properties' takes notice of the various forms of
11059 operator= which are defined, as well as what sorts of type conversion
11060 may apply. Both functions take a FUNCTION_DECL as an argument. */
11063 grok_ctor_properties (ctype
, decl
)
11066 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
11067 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
11069 /* When a type has virtual baseclasses, a magical first int argument is
11070 added to any ctor so we can tell if the class has been initialized
11071 yet. This could screw things up in this function, so we deliberately
11072 ignore the leading int if we're in that situation. */
11073 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
11075 my_friendly_assert (parmtypes
11076 && TREE_VALUE (parmtypes
) == integer_type_node
,
11078 parmtypes
= TREE_CHAIN (parmtypes
);
11079 parmtype
= TREE_VALUE (parmtypes
);
11082 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
11083 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
11084 && (TREE_CHAIN (parmtypes
) == NULL_TREE
11085 || TREE_CHAIN (parmtypes
) == void_list_node
11086 || TREE_PURPOSE (TREE_CHAIN (parmtypes
))))
11088 TYPE_HAS_INIT_REF (ctype
) = 1;
11089 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
11090 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
11092 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
11093 && TREE_CHAIN (parmtypes
) != NULL_TREE
11094 && TREE_CHAIN (parmtypes
) == void_list_node
)
11096 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11098 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
11101 else if (TREE_CODE (parmtype
) == VOID_TYPE
11102 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
11103 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
11108 /* An operator with this name can be either unary or binary. */
11114 return (name
== ansi_opname
[(int) INDIRECT_REF
]
11115 || name
== ansi_opname
[(int) ADDR_EXPR
]
11116 || name
== ansi_opname
[(int) NEGATE_EXPR
]
11117 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11118 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
11119 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
11122 /* An operator with this name can only be unary. */
11128 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
11129 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
11130 || name
== ansi_opname
[(int) COMPONENT_REF
]
11131 || OPERATOR_TYPENAME_P (name
));
11134 /* Do a little sanity-checking on how they declared their operator. */
11137 grok_op_properties (decl
, virtualp
, friendp
)
11139 int virtualp
, friendp
;
11141 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
11142 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
11143 tree name
= DECL_NAME (decl
);
11145 if (current_class_type
== NULL_TREE
)
11150 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11151 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
11152 else if (name
== ansi_opname
[(int) CALL_EXPR
])
11153 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
11154 else if (name
== ansi_opname
[(int) ARRAY_REF
])
11155 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
11156 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
11157 || name
== ansi_opname
[(int) MEMBER_REF
])
11158 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
11159 else if (name
== ansi_opname
[(int) NEW_EXPR
])
11160 TYPE_GETS_NEW (current_class_type
) |= 1;
11161 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
11162 TYPE_GETS_DELETE (current_class_type
) |= 1;
11163 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11164 TYPE_GETS_NEW (current_class_type
) |= 2;
11165 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11166 TYPE_GETS_DELETE (current_class_type
) |= 2;
11169 if (name
== ansi_opname
[(int) NEW_EXPR
]
11170 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
11172 /* When the compiler encounters the definition of A::operator new, it
11173 doesn't look at the class declaration to find out if it's static. */
11175 revert_static_member_fn (&decl
, NULL
, NULL
);
11177 /* Take care of function decl if we had syntax errors. */
11178 if (argtypes
== NULL_TREE
)
11180 = build_function_type (ptr_type_node
,
11181 hash_tree_chain (integer_type_node
,
11184 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
11186 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
11187 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
11190 revert_static_member_fn (&decl
, NULL
, NULL
);
11192 if (argtypes
== NULL_TREE
)
11194 = build_function_type (void_type_node
,
11195 hash_tree_chain (ptr_type_node
,
11199 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
11201 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
11202 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
11203 != void_list_node
))
11204 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
11209 /* An operator function must either be a non-static member function
11210 or have at least one parameter of a class, a reference to a class,
11211 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11212 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
11214 if (OPERATOR_TYPENAME_P (name
)
11215 || name
== ansi_opname
[(int) CALL_EXPR
]
11216 || name
== ansi_opname
[(int) MODIFY_EXPR
]
11217 || name
== ansi_opname
[(int) COMPONENT_REF
]
11218 || name
== ansi_opname
[(int) ARRAY_REF
])
11219 cp_error ("`%D' must be a nonstatic member function", decl
);
11224 if (DECL_STATIC_FUNCTION_P (decl
))
11225 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
11228 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
11230 tree arg
= TREE_VALUE (p
);
11231 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
11232 arg
= TREE_TYPE (arg
);
11234 /* This lets bad template code slip through. */
11235 if (IS_AGGR_TYPE (arg
)
11236 || TREE_CODE (arg
) == ENUMERAL_TYPE
11237 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
11238 || TREE_CODE (arg
) == TEMPLATE_TEMPLATE_PARM
)
11242 ("`%D' must have an argument of class or enumerated type",
11249 if (name
== ansi_opname
[(int) CALL_EXPR
])
11250 return; /* No restrictions on args. */
11252 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
11254 tree t
= TREE_TYPE (name
);
11255 if (TREE_CODE (t
) == VOID_TYPE
)
11256 pedwarn ("void is not a valid type conversion operator");
11257 else if (! friendp
)
11259 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
11262 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
11264 if (t
== current_class_type
)
11265 what
= "the same type";
11266 /* Don't force t to be complete here. */
11267 else if (IS_AGGR_TYPE (t
)
11269 && DERIVED_FROM_P (t
, current_class_type
))
11270 what
= "a base class";
11273 warning ("conversion to %s%s will never use a type conversion operator",
11274 ref
? "a reference to " : "", what
);
11278 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
11282 if (list_length (argtypes
) != 3 && methodp
)
11284 cp_error ("`%D' must take exactly one argument", decl
);
11287 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
11289 if (copy_assignment_arg_p (parmtype
, virtualp
)
11292 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
11293 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
11294 || TYPE_READONLY (TREE_TYPE (parmtype
)))
11295 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
11298 else if (name
== ansi_opname
[(int) COND_EXPR
])
11301 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11302 if (list_length (argtypes
) != 4)
11303 cp_error ("`%D' must take exactly three arguments", decl
);
11305 else if (ambi_op_p (name
))
11307 if (list_length (argtypes
) == 2)
11309 else if (list_length (argtypes
) == 3)
11311 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11312 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11313 && ! processing_template_decl
11314 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
11317 cp_error ("postfix `%D' must take `int' as its argument",
11321 ("postfix `%D' must take `int' as its second argument",
11328 cp_error ("`%D' must take either zero or one argument", decl
);
11330 cp_error ("`%D' must take either one or two arguments", decl
);
11333 /* More Effective C++ rule 6. */
11335 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11336 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
11338 tree arg
= TREE_VALUE (argtypes
);
11339 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
11340 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
11341 arg
= TREE_TYPE (arg
);
11342 arg
= TYPE_MAIN_VARIANT (arg
);
11343 if (list_length (argtypes
) == 2)
11345 if (TREE_CODE (ret
) != REFERENCE_TYPE
11346 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
11348 cp_warning ("prefix `%D' should return `%T'", decl
,
11349 build_reference_type (arg
));
11353 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
11354 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
11358 else if (unary_op_p (name
))
11360 if (list_length (argtypes
) != 2)
11363 cp_error ("`%D' must take `void'", decl
);
11365 cp_error ("`%D' must take exactly one argument", decl
);
11368 else /* if (binary_op_p (name)) */
11370 if (list_length (argtypes
) != 3)
11373 cp_error ("`%D' must take exactly one argument", decl
);
11375 cp_error ("`%D' must take exactly two arguments", decl
);
11378 /* More Effective C++ rule 7. */
11380 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
11381 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
11382 || name
== ansi_opname
[COMPOUND_EXPR
]))
11383 cp_warning ("user-defined `%D' always evaluates both arguments",
11387 /* Effective C++ rule 23. */
11389 && list_length (argtypes
) == 3
11390 && (name
== ansi_opname
[PLUS_EXPR
]
11391 || name
== ansi_opname
[MINUS_EXPR
]
11392 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
11393 || name
== ansi_opname
[MULT_EXPR
])
11394 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
11395 cp_warning ("`%D' should return by value", decl
);
11399 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
11400 if (TREE_PURPOSE (argtypes
))
11402 TREE_PURPOSE (argtypes
) = NULL_TREE
;
11403 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
11404 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
11407 cp_pedwarn ("`%D' cannot have default arguments", decl
);
11410 cp_error ("`%D' cannot have default arguments", decl
);
11415 /* Get the struct, enum or union (CODE says which) with tag NAME.
11416 Define the tag as a forward-reference if it is not defined.
11418 C++: If a class derivation is given, process it here, and report
11419 an error if multiple derivation declarations are not identical.
11421 If this is a definition, come in through xref_tag and only look in
11422 the current frame for the name (since C++ allows new names in any
11426 xref_tag (code_type_node
, name
, globalize
)
11427 tree code_type_node
;
11431 enum tag_types tag_code
;
11432 enum tree_code code
;
11434 register tree ref
, t
;
11435 struct binding_level
*b
= inner_binding_level
;
11437 tree attributes
= NULL_TREE
;
11439 /* If we are called from the parser, code_type_node will sometimes be a
11440 TREE_LIST. This indicates that the user wrote
11441 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11443 if (TREE_CODE (code_type_node
) == TREE_LIST
)
11445 attributes
= TREE_PURPOSE (code_type_node
);
11446 code_type_node
= TREE_VALUE (code_type_node
);
11449 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11454 case signature_type
:
11455 code
= RECORD_TYPE
;
11461 code
= ENUMERAL_TYPE
;
11464 my_friendly_abort (18);
11467 /* If a cross reference is requested, look up the type
11468 already defined for this tag and return it. */
11469 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
11472 name
= TYPE_IDENTIFIER (t
);
11476 t
= IDENTIFIER_TYPE_VALUE (name
);
11477 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
11478 && TREE_CODE (t
) != TEMPLATE_TEMPLATE_PARM
)
11483 if (t
&& (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
11484 || TREE_CODE (t
) == TEMPLATE_TEMPLATE_PARM
))
11486 cp_error ("redeclaration of template type-parameter `%T'", name
);
11487 cp_error_at (" previously declared here `%#D'",
11488 TEMPLATE_TYPE_DECL (t
));
11490 if (t
&& TYPE_CONTEXT (t
) && got_type
)
11493 /* If we know we are defining this tag, only look it up in
11494 this scope and don't try to find it as a type. */
11495 ref
= lookup_tag (code
, name
, b
, 1);
11499 if (current_class_type
11500 && template_class_depth (current_class_type
)
11501 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11502 /* Since GLOBALIZE is non-zero, we are not looking at a
11503 definition of this tag. Since, in addition, we are currently
11504 processing a (member) template declaration of a template
11505 class, we don't want to do any lookup at all; consider:
11512 { template <class V>
11513 friend struct S1; };
11515 Here, the S2::S1 declaration should not be confused with the
11516 outer declaration. In particular, the inner version should
11517 have a template parameter of level 2, not level 1. This
11518 would be particularly important if the member declaration
11521 template <class V = U> friend struct S1;
11523 say, when we should tsubst into `U' when instantiating S2. */
11530 ref
= lookup_tag (code
, name
, b
, 0);
11534 /* Try finding it as a type declaration. If that wins,
11536 ref
= lookup_name (name
, 1);
11538 if (ref
!= NULL_TREE
11539 && processing_template_decl
11540 && DECL_CLASS_TEMPLATE_P (ref
)
11541 && template_class_depth (current_class_type
) == 0)
11542 /* Since GLOBALIZE is true, we're declaring a global
11543 template, so we want this type. */
11544 ref
= DECL_RESULT (ref
);
11546 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
11547 && TREE_CODE (TREE_TYPE (ref
)) == code
)
11548 ref
= TREE_TYPE (ref
);
11555 push_obstacks_nochange ();
11559 /* If no such tag is yet defined, create a forward-reference node
11560 and record it as the "definition".
11561 When a real declaration of this type is found,
11562 the forward-reference will be altered into a real type. */
11564 /* In C++, since these migrate into the global scope, we must
11565 build them on the permanent obstack. */
11567 temp
= allocation_temporary_p ();
11569 end_temporary_allocation ();
11571 if (code
== ENUMERAL_TYPE
)
11573 cp_error ("use of enum `%#D' without previous declaration", name
);
11575 ref
= make_node (ENUMERAL_TYPE
);
11577 /* Give the type a default layout like unsigned int
11578 to avoid crashing if it does not get defined. */
11579 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
11580 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
11581 TREE_UNSIGNED (ref
) = 1;
11582 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
11583 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
11584 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
11586 /* Enable us to recognize when a type is created in class context.
11587 To do nested classes correctly, this should probably be cleared
11588 out when we leave this classes scope. Currently this in only
11589 done in `start_enum'. */
11591 pushtag (name
, ref
, globalize
);
11595 struct binding_level
*old_b
= class_binding_level
;
11597 ref
= make_lang_type (code
);
11599 if (tag_code
== signature_type
)
11601 SET_SIGNATURE (ref
);
11602 /* Since a signature type will be turned into the type
11603 of signature tables, it's not only an interface. */
11604 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
11605 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
11606 /* A signature doesn't have a vtable. */
11607 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
11610 #ifdef NONNESTED_CLASSES
11611 /* Class types don't nest the way enums do. */
11612 class_binding_level
= (struct binding_level
*)0;
11614 pushtag (name
, ref
, globalize
);
11615 class_binding_level
= old_b
;
11620 /* If it no longer looks like a nested type, make sure it's
11622 If it is not an IDENTIFIER, this is not a declaration */
11623 if (b
->namespace_p
&& !class_binding_level
11624 && TREE_CODE (name
) == IDENTIFIER_NODE
)
11626 if (IDENTIFIER_NAMESPACE_VALUE (name
) == NULL_TREE
)
11627 SET_IDENTIFIER_NAMESPACE_VALUE (name
, TYPE_NAME (ref
));
11630 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
11631 redeclare_class_template (ref
, current_template_parms
);
11634 /* Until the type is defined, tentatively accept whatever
11635 structure tag the user hands us. */
11636 if (TYPE_SIZE (ref
) == NULL_TREE
11637 && ref
!= current_class_type
11638 /* Have to check this, in case we have contradictory tag info. */
11639 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
11641 if (tag_code
== class_type
)
11642 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
11643 else if (tag_code
== record_type
|| tag_code
== signature_type
)
11644 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
11649 TREE_TYPE (ref
) = attributes
;
11655 xref_tag_from_type (old
, id
, globalize
)
11659 tree code_type_node
;
11661 if (TREE_CODE (old
) == RECORD_TYPE
)
11662 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
11663 ? class_type_node
: record_type_node
);
11665 code_type_node
= union_type_node
;
11667 if (id
== NULL_TREE
)
11668 id
= TYPE_IDENTIFIER (old
);
11670 return xref_tag (code_type_node
, id
, globalize
);
11674 xref_basetypes (code_type_node
, name
, ref
, binfo
)
11675 tree code_type_node
;
11679 /* In the declaration `A : X, Y, ... Z' we mark all the types
11680 (A, X, Y, ..., Z) so we can check for duplicates. */
11683 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
11685 if (tag_code
== union_type
)
11687 cp_error ("derived union `%T' invalid", ref
);
11691 len
= list_length (binfo
);
11692 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
11694 SET_CLASSTYPE_MARKED (ref
);
11695 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
11697 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
11699 /* The base of a derived struct is public by default. */
11701 = (TREE_PURPOSE (binfo
) == access_public_node
11702 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11703 || (tag_code
!= class_type
11704 && (TREE_PURPOSE (binfo
) == access_default_node
11705 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
11707 = (TREE_PURPOSE (binfo
) == access_protected_node
11708 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
11710 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
11711 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
11712 || TREE_PURPOSE (binfo
) == access_public_virtual_node
11713 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
11714 tree basetype
= TREE_VALUE (binfo
);
11717 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
11718 basetype
= TREE_TYPE (basetype
);
11720 || (TREE_CODE (basetype
) != RECORD_TYPE
11721 && TREE_CODE (basetype
) != TYPENAME_TYPE
11722 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
11723 && TREE_CODE (basetype
) != TEMPLATE_TEMPLATE_PARM
))
11725 cp_error ("base type `%T' fails to be a struct or class type",
11726 TREE_VALUE (binfo
));
11730 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
11733 /* This code replaces similar code in layout_basetypes.
11734 We put the complete_type first for implicit `typename'. */
11735 if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
11736 && ! (current_template_parms
&& uses_template_parms (basetype
)))
11738 cp_error ("base class `%T' has incomplete type", basetype
);
11744 if (CLASSTYPE_MARKED (basetype
))
11746 if (basetype
== ref
)
11747 cp_error ("recursive type `%T' undefined", basetype
);
11749 cp_error ("duplicate base type `%T' invalid", basetype
);
11753 if (TYPE_FOR_JAVA (basetype
)
11754 && current_lang_stack
== current_lang_base
)
11755 TYPE_FOR_JAVA (ref
) = 1;
11757 /* Note that the BINFO records which describe individual
11758 inheritances are *not* shared in the lattice! They
11759 cannot be shared because a given baseclass may be
11760 inherited with different `accessibility' by different
11761 derived classes. (Each BINFO record describing an
11762 individual inheritance contains flags which say what
11763 the `accessibility' of that particular inheritance is.) */
11765 base_binfo
= make_binfo (integer_zero_node
, basetype
,
11766 TYPE_BINFO_VTABLE (basetype
),
11767 TYPE_BINFO_VIRTUALS (basetype
));
11769 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
11770 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
11771 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
11772 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
11773 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
11775 /* We need to unshare the binfos now so that lookups during class
11776 definition work. */
11777 unshare_base_binfos (base_binfo
);
11779 SET_CLASSTYPE_MARKED (basetype
);
11781 /* We are free to modify these bits because they are meaningless
11782 at top level, and BASETYPE is a top-level type. */
11783 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
11785 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
11786 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11789 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
11790 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
11791 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
11796 TREE_VEC_LENGTH (binfos
) = i
;
11798 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
11801 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
11803 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
11804 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
11805 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
11806 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
11808 /* Unmark all the types. */
11810 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
11811 CLEAR_CLASSTYPE_MARKED (ref
);
11817 tree current_local_enum
= NULL_TREE
;
11819 /* Begin compiling the definition of an enumeration type.
11820 NAME is its name (or null if anonymous).
11821 Returns the type object, as yet incomplete.
11822 Also records info about it so that build_enumerator
11823 may be used to declare the individual values as they are read. */
11829 register tree enumtype
= NULL_TREE
;
11830 struct binding_level
*b
= inner_binding_level
;
11832 /* We are wasting space here and putting these on the permanent_obstack so
11833 that typeid(local enum) will work correctly. */
11835 if (processing_template_decl
&& current_function_decl
)
11838 end_temporary_allocation ();
11840 /* If this is the real definition for a previous forward reference,
11841 fill in the contents in the same object that used to be the
11842 forward reference. */
11844 if (name
!= NULL_TREE
)
11845 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
11847 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
11848 cp_error ("multiple definition of `%#T'", enumtype
);
11851 enumtype
= make_node (ENUMERAL_TYPE
);
11852 pushtag (name
, enumtype
, 0);
11855 if (current_class_type
)
11856 TREE_ADDRESSABLE (b
->tags
) = 1;
11858 current_local_enum
= NULL_TREE
;
11860 /* We don't copy this value because build_enumerator needs to do it. */
11861 enum_next_value
= integer_zero_node
;
11864 GNU_xref_decl (current_function_decl
, enumtype
);
11868 /* After processing and defining all the values of an enumeration type,
11869 install their decls in the enumeration type and finish it off.
11870 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11871 Returns ENUMTYPE. */
11874 finish_enum (enumtype
)
11877 register tree minnode
= NULL_TREE
, maxnode
= NULL_TREE
;
11878 /* Calculate the maximum value of any enumerator in this type. */
11880 tree values
= TYPE_VALUES (enumtype
);
11885 for (pair
= values
; pair
; pair
= TREE_CHAIN (pair
))
11890 /* The TREE_VALUE is a CONST_DECL for this enumeration
11892 decl
= TREE_VALUE (pair
);
11894 /* The DECL_INITIAL will be NULL if we are processing a
11895 template declaration and this enumeration constant had no
11896 explicit initializer. */
11897 value
= DECL_INITIAL (decl
);
11898 if (value
&& !processing_template_decl
)
11900 /* Set the TREE_TYPE for the VALUE as well. That's so
11901 that when we call decl_constant_value we get an
11902 entity of the right type (but with the constant
11903 value). Since we shouldn't ever call
11904 decl_constant_value on a template type, there's no
11905 reason to do that when processing_template_decl.
11906 And, if the expression is something like a
11907 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
11908 wreak havoc on the intended type of the expression.
11910 Of course, there's also no point in trying to compute
11911 minimum or maximum values if we're in a template. */
11912 TREE_TYPE (value
) = enumtype
;
11915 minnode
= maxnode
= value
;
11916 else if (tree_int_cst_lt (maxnode
, value
))
11918 else if (tree_int_cst_lt (value
, minnode
))
11922 /* In the list we're building up, we want the enumeration
11923 values, not the CONST_DECLs. */
11924 TREE_VALUE (pair
) = value
;
11928 maxnode
= minnode
= integer_zero_node
;
11930 TYPE_VALUES (enumtype
) = nreverse (values
);
11932 if (processing_template_decl
)
11934 if (current_function_decl
)
11936 add_tree (build_min (TAG_DEFN
, enumtype
));
11937 resume_temporary_allocation ();
11943 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
11944 int lowprec
= min_precision (minnode
, unsignedp
);
11945 int highprec
= min_precision (maxnode
, unsignedp
);
11946 int precision
= MAX (lowprec
, highprec
);
11948 TYPE_SIZE (enumtype
) = NULL_TREE
;
11950 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11952 TYPE_PRECISION (enumtype
) = precision
;
11954 fixup_unsigned_type (enumtype
);
11956 fixup_signed_type (enumtype
);
11958 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
11959 /* Use the width of the narrowest normal C type which is wide enough. */
11960 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
11963 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
11965 TYPE_SIZE (enumtype
) = 0;
11966 layout_type (enumtype
);
11972 /* Fix up all variant types of this enum type. */
11973 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
11974 tem
= TYPE_NEXT_VARIANT (tem
))
11976 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
11977 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
11978 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
11979 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
11980 TYPE_SIZE_UNIT (tem
) = TYPE_SIZE_UNIT (enumtype
);
11981 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
11982 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
11983 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
11984 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
11988 /* Finish debugging output for this type. */
11989 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
11994 /* Build and install a CONST_DECL for an enumeration constant of the
11995 enumeration type TYPE whose NAME and VALUE (if any) are provided.
11996 Assignment of sequential values by default is handled here. */
11999 build_enumerator (name
, value
, type
)
12007 /* Remove no-op casts from the value. */
12009 STRIP_TYPE_NOPS (value
);
12011 if (! processing_template_decl
)
12013 /* Validate and default VALUE. */
12014 if (value
!= NULL_TREE
)
12016 if (TREE_READONLY_DECL_P (value
))
12017 value
= decl_constant_value (value
);
12019 if (TREE_CODE (value
) == INTEGER_CST
)
12021 value
= default_conversion (value
);
12022 constant_expression_warning (value
);
12026 cp_error ("enumerator value for `%D' not integer constant", name
);
12031 /* Default based on previous value. */
12032 if (value
== NULL_TREE
&& ! processing_template_decl
)
12034 value
= enum_next_value
;
12036 cp_error ("overflow in enumeration values at `%D'", name
);
12039 /* Remove no-op casts from the value. */
12041 STRIP_TYPE_NOPS (value
);
12043 /* To fix MAX_VAL enum consts. (bkoz) */
12044 TREE_TYPE (value
) = integer_type_node
;
12048 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12049 Even in other cases, we will later (in finish_enum) be setting the
12051 if (value
!= NULL_TREE
)
12052 value
= copy_node (value
);
12054 /* C++ associates enums with global, function, or class declarations. */
12056 context
= current_scope ();
12057 if (context
&& context
== current_class_type
)
12058 /* This enum declaration is local to the class. */
12059 decl
= build_lang_field_decl (CONST_DECL
, name
, type
);
12061 /* It's a global enum, or it's local to a function. (Note local to
12062 a function could mean local to a class method. */
12063 decl
= build_decl (CONST_DECL
, name
, type
);
12065 DECL_CONTEXT (decl
) = FROB_CONTEXT (context
);
12066 DECL_INITIAL (decl
) = value
;
12067 TREE_READONLY (decl
) = 1;
12069 if (context
&& context
== current_class_type
)
12071 pushdecl_class_level (decl
);
12072 TREE_CHAIN (decl
) = current_local_enum
;
12073 current_local_enum
= decl
;
12078 GNU_xref_decl (current_function_decl
, decl
);
12081 if (! processing_template_decl
)
12083 /* Set basis for default for next value. */
12084 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
12085 integer_one_node
, PLUS_EXPR
);
12086 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
12089 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
12093 /* Called after we have finished the declaration of an enumeration
12094 type, and, perhaps, some objects whose type involves the
12095 enumeration type. DECL, if non-NULL, is the declaration of the
12098 If CURRENT_LOCAL_ENUM is NULL, the DECL is returned.
12100 If CURRENT_LOCAL_ENUM is non-NULL, it should be the CONST_DECL for
12101 the last enumeration constant of an enumeration type that is a
12102 member of a class. The enumeration constants are already chained
12103 together through their TREE_CHAIN fields. This function sets the
12104 TREE_CHAIN of the last enumeration constant to DECL. The
12105 CONST_DECL for the last enumeration constant is returned.
12107 CURRENT_LOCAL_ENUM will always be NULL when this function
12111 grok_enum_decls (decl
)
12114 tree d
= current_local_enum
;
12116 if (d
== NULL_TREE
)
12121 if (TREE_CHAIN (d
) == NULL_TREE
)
12123 TREE_CHAIN (d
) = decl
;
12126 d
= TREE_CHAIN (d
);
12129 decl
= current_local_enum
;
12130 current_local_enum
= NULL_TREE
;
12135 static int function_depth
;
12137 /* Create the FUNCTION_DECL for a function definition.
12138 DECLSPECS and DECLARATOR are the parts of the declaration;
12139 they describe the function's name and the type it returns,
12140 but twisted together in a fashion that parallels the syntax of C.
12142 This function creates a binding context for the function body
12143 as well as setting up the FUNCTION_DECL in current_function_decl.
12145 Returns 1 on success. If the DECLARATOR is not suitable for a function
12146 (it defines a datum instead), we return 0, which tells
12147 yyparse to report a parse error.
12149 For C++, we must first check whether that datum makes any sense.
12150 For example, "class A local_a(1,2);" means that variable local_a
12151 is an aggregate of type A, which should have a constructor
12152 applied to it with the argument list [1, 2].
12154 @@ There is currently no way to retrieve the storage
12155 @@ allocated to FUNCTION (or all of its parms) if we return
12156 @@ something we had previously. */
12159 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
12160 tree declspecs
, declarator
, attrs
;
12164 tree ctype
= NULL_TREE
;
12167 extern int have_extern_spec
;
12168 extern int used_extern_spec
;
12169 int doing_friend
= 0;
12171 /* Sanity check. */
12172 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
12173 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
12175 /* Assume, until we see it does. */
12176 current_function_returns_value
= 0;
12177 current_function_returns_null
= 0;
12178 warn_about_return_type
= 0;
12180 shadowed_labels
= 0;
12181 current_function_assigns_this
= 0;
12182 current_function_just_assigned_this
= 0;
12183 current_function_parms_stored
= 0;
12184 original_result_rtx
= NULL_RTX
;
12185 base_init_expr
= NULL_TREE
;
12186 current_base_init_list
= NULL_TREE
;
12187 current_member_init_list
= NULL_TREE
;
12188 ctor_label
= dtor_label
= NULL_TREE
;
12189 static_labelno
= 0;
12191 clear_temp_name ();
12193 /* This should only be done once on the top most decl. */
12194 if (have_extern_spec
&& !used_extern_spec
)
12196 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
12197 used_extern_spec
= 1;
12202 decl1
= declarator
;
12205 /* What was this testing for, exactly? */
12206 if (! DECL_ARGUMENTS (decl1
)
12207 && !DECL_STATIC_FUNCTION_P (decl1
)
12208 && !DECL_ARTIFICIAL (decl1
)
12209 && DECL_CLASS_SCOPE_P (decl1
)
12210 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
12211 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
12213 tree binding
= binding_for_name (DECL_NAME (decl1
),
12214 current_namespace
);
12215 cp_error ("redeclaration of `%#D'", decl1
);
12216 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
12217 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
12218 else if (BINDING_VALUE (binding
))
12219 cp_error_at ("previous declaration here", BINDING_VALUE (binding
));
12223 fntype
= TREE_TYPE (decl1
);
12224 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12225 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12227 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12228 class is in the (lexical) scope of the class in which it is
12230 if (!ctype
&& DECL_FRIEND_P (decl1
))
12232 ctype
= DECL_CLASS_CONTEXT (decl1
);
12234 /* CTYPE could be null here if we're dealing with a template;
12235 for example, `inline friend float foo()' inside a template
12236 will have no CTYPE set. */
12237 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
12243 /* In a fcn definition, arg types must be complete. */
12244 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
12246 /* In case some arg types were completed since the declaration was
12247 parsed, fix up the decls. */
12249 tree t
= DECL_ARGUMENTS (decl1
);
12250 for (; t
; t
= TREE_CHAIN (t
))
12251 layout_decl (t
, 0);
12254 last_function_parms
= DECL_ARGUMENTS (decl1
);
12255 last_function_parm_tags
= NULL_TREE
;
12259 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
12260 /* If the declarator is not suitable for a function definition,
12261 cause a syntax error. */
12262 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
12264 fntype
= TREE_TYPE (decl1
);
12266 restype
= TREE_TYPE (fntype
);
12267 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
12268 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
12270 cp_error ("semicolon missing after declaration of `%#T'", restype
);
12271 shadow_tag (build_expr_list (NULL_TREE
, restype
));
12272 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
12273 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
12274 fntype
= build_function_type (integer_type_node
,
12275 TYPE_ARG_TYPES (fntype
));
12277 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
12279 TYPE_ARG_TYPES (fntype
));
12280 TREE_TYPE (decl1
) = fntype
;
12283 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12284 ctype
= TYPE_METHOD_BASETYPE (fntype
);
12285 else if (DECL_MAIN_P (decl1
))
12287 /* If this doesn't return integer_type, complain. */
12288 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
12290 if (pedantic
|| warn_return_type
)
12291 pedwarn ("return type for `main' changed to `int'");
12292 TREE_TYPE (decl1
) = fntype
= default_function_type
;
12294 warn_about_return_type
= 0;
12298 /* Warn if function was previously implicitly declared
12299 (but not if we warned then). */
12300 if (! warn_implicit
12301 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
12302 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
12304 current_function_decl
= decl1
;
12305 /* Save the parm names or decls from this function's declarator
12306 where store_parm_decls will find them. */
12307 current_function_parms
= last_function_parms
;
12308 current_function_parm_tags
= last_function_parm_tags
;
12310 announce_function (decl1
);
12312 if (! processing_template_decl
)
12314 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
12316 cp_error ("return-type `%#T' is an incomplete type",
12317 TREE_TYPE (fntype
));
12319 /* Make it return void instead, but don't change the
12320 type of the DECL_RESULT, in case we have a named return value. */
12323 = build_cplus_method_type (build_type_variant (ctype
,
12324 TREE_READONLY (decl1
),
12325 TREE_SIDE_EFFECTS (decl1
)),
12327 FUNCTION_ARG_CHAIN (decl1
));
12330 = build_function_type (void_type_node
,
12331 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
12332 DECL_RESULT (decl1
)
12333 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
12334 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
12335 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
12338 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
12339 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
12340 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
12343 if (warn_about_return_type
)
12344 pedwarn ("return-type defaults to `int'");
12346 /* Effective C++ rule 15. See also c_expand_return. */
12348 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
12349 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
12350 cp_warning ("`operator=' should return a reference to `*this'");
12352 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12353 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12354 DECL_INITIAL (decl1
) = error_mark_node
;
12356 /* This function exists in static storage.
12357 (This does not mean `static' in the C sense!) */
12358 TREE_STATIC (decl1
) = 1;
12360 /* Set up current_class_type, and enter the scope of the class, if
12363 push_nested_class (ctype
, 1);
12364 else if (DECL_STATIC_FUNCTION_P (decl1
))
12365 push_nested_class (DECL_CONTEXT (decl1
), 2);
12367 /* We must call push_template_decl after current_class_type is set
12368 up. (If we are processing inline definitions after exiting a
12369 class scope, current_class_type will be NULL_TREE until set above
12370 by push_nested_class.) */
12371 if (processing_template_decl
)
12372 decl1
= push_template_decl (decl1
);
12374 /* Record the decl so that the function name is defined.
12375 If we already have a decl for this name, and it is a FUNCTION_DECL,
12376 use the old decl. */
12377 if (!processing_template_decl
&& pre_parsed_p
== 0)
12379 /* A specialization is not used to guide overload resolution. */
12380 if ((flag_guiding_decls
12381 || !DECL_TEMPLATE_SPECIALIZATION (decl1
))
12382 && ! DECL_FUNCTION_MEMBER_P (decl1
))
12383 decl1
= pushdecl (decl1
);
12386 /* We need to set the DECL_CONTEXT. */
12387 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
12388 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
12389 /* And make sure we have enough default args. */
12390 check_default_args (decl1
);
12392 DECL_MAIN_VARIANT (decl1
) = decl1
;
12393 fntype
= TREE_TYPE (decl1
);
12396 current_function_decl
= decl1
;
12398 if (DECL_INTERFACE_KNOWN (decl1
))
12400 tree ctx
= hack_decl_function_context (decl1
);
12402 if (DECL_NOT_REALLY_EXTERN (decl1
))
12403 DECL_EXTERNAL (decl1
) = 0;
12405 if (ctx
!= NULL_TREE
&& DECL_THIS_INLINE (ctx
)
12406 && TREE_PUBLIC (ctx
))
12407 /* This is a function in a local class in an extern inline
12409 comdat_linkage (decl1
);
12411 /* If this function belongs to an interface, it is public.
12412 If it belongs to someone else's interface, it is also external.
12413 It doesn't matter whether it's inline or not. */
12414 else if (interface_unknown
== 0
12415 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
12416 || flag_alt_external_templates
))
12418 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
12419 || processing_template_decl
)
12420 DECL_EXTERNAL (decl1
)
12422 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
12424 DECL_EXTERNAL (decl1
) = 0;
12425 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
12426 DECL_INTERFACE_KNOWN (decl1
) = 1;
12430 /* This is a definition, not a reference.
12431 So clear DECL_EXTERNAL. */
12432 DECL_EXTERNAL (decl1
) = 0;
12434 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
12435 && ! DECL_INTERFACE_KNOWN (decl1
)
12436 /* Don't try to defer nested functions for now. */
12437 && ! hack_decl_function_context (decl1
))
12438 DECL_DEFER_OUTPUT (decl1
) = 1;
12440 DECL_INTERFACE_KNOWN (decl1
) = 1;
12443 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
12445 if (TREE_CODE (fntype
) == METHOD_TYPE
)
12446 TREE_TYPE (decl1
) = fntype
12447 = build_function_type (TREE_TYPE (fntype
),
12448 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
12449 current_function_parms
= TREE_CHAIN (current_function_parms
);
12450 DECL_ARGUMENTS (decl1
) = current_function_parms
;
12453 restype
= TREE_TYPE (fntype
);
12457 /* If we're compiling a friend function, neither of the variables
12458 current_class_ptr nor current_class_type will have values. */
12459 if (! doing_friend
)
12461 /* We know that this was set up by `grokclassfn'.
12462 We do not wait until `store_parm_decls', since evil
12463 parse errors may never get us to that point. Here
12464 we keep the consistency between `current_class_type'
12465 and `current_class_ptr'. */
12466 tree t
= current_function_parms
;
12468 my_friendly_assert (t
!= NULL_TREE
12469 && TREE_CODE (t
) == PARM_DECL
, 162);
12471 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
12473 int i
= suspend_momentary ();
12475 /* Fool build_indirect_ref. */
12476 current_class_ptr
= NULL_TREE
;
12477 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
12478 current_class_ptr
= t
;
12479 resume_momentary (i
);
12482 /* We're having a signature pointer here. */
12483 current_class_ref
= current_class_ptr
= t
;
12489 current_class_ptr
= current_class_ref
= NULL_TREE
;
12493 current_binding_level
->parm_flag
= 1;
12495 GNU_xref_function (decl1
, current_function_parms
);
12498 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
12499 make_function_rtl (decl1
);
12501 /* Promote the value to int before returning it. */
12502 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
12503 restype
= type_promotes_to (restype
);
12505 /* If this fcn was already referenced via a block-scope `extern' decl
12506 (or an implicit decl), propagate certain information about the usage. */
12507 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
12508 TREE_ADDRESSABLE (decl1
) = 1;
12510 if (DECL_RESULT (decl1
) == NULL_TREE
)
12512 DECL_RESULT (decl1
)
12513 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
12514 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
12515 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
12518 /* Allocate further tree nodes temporarily during compilation
12519 of this function only. Tiemann moved up here from bottom of fn. */
12520 /* If this is a nested function, then we must continue to allocate RTL
12521 on the permanent obstack in case we need to inline it later. */
12522 if (! hack_decl_function_context (decl1
))
12523 temporary_allocation ();
12525 if (processing_template_decl
)
12527 ++minimal_parse_mode
;
12528 last_tree
= DECL_SAVED_TREE (decl1
)
12529 = build_nt (EXPR_STMT
, void_zero_node
);
12534 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
12535 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
12537 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12538 ctor_label
= NULL_TREE
;
12542 dtor_label
= NULL_TREE
;
12543 if (DECL_CONSTRUCTOR_P (decl1
))
12544 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12550 /* Called after store_parm_decls for a function-try-block. We need to update
12551 last_parm_cleanup_insn so that the base initializers for a constructor
12552 are run within this block, not before it. */
12555 expand_start_early_try_stmts ()
12557 expand_start_try_stmts ();
12558 last_parm_cleanup_insn
= get_last_insn ();
12561 /* Store the parameter declarations into the current function declaration.
12562 This is called after parsing the parameter declarations, before
12563 digesting the body of the function.
12565 Also install to binding contour return value identifier, if any. */
12568 store_parm_decls ()
12570 register tree fndecl
= current_function_decl
;
12571 register tree parm
;
12572 int parms_have_cleanups
= 0;
12573 tree cleanups
= NULL_TREE
;
12575 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12576 tree specparms
= current_function_parms
;
12578 /* This is a list of types declared among parms in a prototype. */
12579 tree parmtags
= current_function_parm_tags
;
12581 /* This is a chain of any other decls that came in among the parm
12582 declarations. If a parm is declared with enum {foo, bar} x;
12583 then CONST_DECLs for foo and bar are put here. */
12584 tree nonparms
= NULL_TREE
;
12586 if (toplevel_bindings_p ())
12587 fatal ("parse errors have confused me too much");
12589 /* Initialize RTL machinery. */
12590 init_function_start (fndecl
, input_filename
, lineno
);
12592 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12593 declare_function_name ();
12595 /* Create a binding level for the parms. */
12596 expand_start_bindings (0);
12598 if (specparms
!= NULL_TREE
)
12600 /* This case is when the function was defined with an ANSI prototype.
12601 The parms already have decls, so we need not do anything here
12602 except record them as in effect
12603 and complain if any redundant old-style parm decls were written. */
12605 register tree next
;
12607 /* Must clear this because it might contain TYPE_DECLs declared
12609 storedecls (NULL_TREE
);
12611 for (parm
= nreverse (specparms
); parm
; parm
= next
)
12613 next
= TREE_CHAIN (parm
);
12614 if (TREE_CODE (parm
) == PARM_DECL
)
12617 if (DECL_NAME (parm
) == NULL_TREE
)
12621 else if (TREE_CODE (TREE_TYPE (parm
)) == VOID_TYPE
)
12622 cp_error ("parameter `%D' declared void", parm
);
12625 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12626 A parameter is assumed not to have any side effects.
12627 If this should change for any reason, then this
12628 will have to wrap the bashed reference type in a save_expr.
12630 Also, if the parameter type is declared to be an X
12631 and there is an X(X&) constructor, we cannot lay it
12632 into the stack (any more), so we make this parameter
12633 look like it is really of reference type. Functions
12634 which pass parameters to this function will know to
12635 create a temporary in their frame, and pass a reference
12638 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
12639 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
12640 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
12644 if (! processing_template_decl
12645 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
12647 expand_decl (parm
);
12648 parms_have_cleanups
= 1;
12650 /* Keep track of the cleanups. */
12651 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
12656 /* If we find an enum constant or a type tag,
12657 put it aside for the moment. */
12658 TREE_CHAIN (parm
) = NULL_TREE
;
12659 nonparms
= chainon (nonparms
, parm
);
12663 /* Get the decls in their original chain order
12664 and record in the function. This is all and only the
12665 PARM_DECLs that were pushed into scope by the loop above. */
12666 DECL_ARGUMENTS (fndecl
) = getdecls ();
12668 storetags (chainon (parmtags
, gettags ()));
12671 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12673 /* Now store the final chain of decls for the arguments
12674 as the decl-chain of the current lexical scope.
12675 Put the enumerators in as well, at the front so that
12676 DECL_ARGUMENTS is not modified. */
12678 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
12680 /* Initialize the RTL code for the function. */
12681 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
12682 if (! processing_template_decl
)
12683 expand_function_start (fndecl
, parms_have_cleanups
);
12685 current_function_parms_stored
= 1;
12687 /* If this function is `main', emit a call to `__main'
12688 to run global initializers, etc. */
12689 if (DECL_MAIN_P (fndecl
))
12690 expand_main_function ();
12692 /* Now that we have initialized the parms, we can start their
12693 cleanups. We cannot do this before, since expand_decl_cleanup
12694 should not be called before the parm can be used. */
12696 && ! processing_template_decl
)
12698 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
12700 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
12701 cp_error ("parser lost in parsing declaration of `%D'",
12702 TREE_PURPOSE (cleanups
));
12706 /* Create a binding contour which can be used to catch
12707 cleanup-generated temporaries. Also, if the return value needs or
12708 has initialization, deal with that now. */
12709 if (parms_have_cleanups
)
12712 expand_start_bindings (0);
12715 if (! processing_template_decl
&& flag_exceptions
)
12717 /* Do the starting of the exception specifications, if we have any. */
12718 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
12719 expand_start_eh_spec ();
12722 last_parm_cleanup_insn
= get_last_insn ();
12723 last_dtor_insn
= get_last_insn ();
12726 /* Bind a name and initialization to the return value of
12727 the current function. */
12730 store_return_init (return_id
, init
)
12731 tree return_id
, init
;
12733 tree decl
= DECL_RESULT (current_function_decl
);
12736 /* Give this error as many times as there are occurrences,
12737 so that users can use Emacs compilation buffers to find
12738 and fix all such places. */
12739 pedwarn ("ANSI C++ does not permit named return values");
12741 if (return_id
!= NULL_TREE
)
12743 if (DECL_NAME (decl
) == NULL_TREE
)
12745 DECL_NAME (decl
) = return_id
;
12746 DECL_ASSEMBLER_NAME (decl
) = return_id
;
12749 cp_error ("return identifier `%D' already in place", decl
);
12752 /* Can't let this happen for constructors. */
12753 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12755 error ("can't redefine default return value for constructors");
12759 /* If we have a named return value, put that in our scope as well. */
12760 if (DECL_NAME (decl
) != NULL_TREE
)
12762 /* If this named return value comes in a register,
12763 put it in a pseudo-register. */
12764 if (DECL_REGISTER (decl
))
12766 original_result_rtx
= DECL_RTL (decl
);
12767 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
12770 /* Let `cp_finish_decl' know that this initializer is ok. */
12771 DECL_INITIAL (decl
) = init
;
12774 if (minimal_parse_mode
)
12775 add_tree (build_min_nt (RETURN_INIT
, return_id
,
12776 copy_to_permanent (init
)));
12778 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
12783 /* Finish up a function declaration and compile that function
12784 all the way to assembler language output. The free the storage
12785 for the function definition.
12787 This is called after parsing the body of the function definition.
12788 LINENO is the current line number.
12790 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12791 (and expand_end_bindings) must be made to take care of the binding
12792 contour for the base initializers. This is only relevant for
12795 NESTED is nonzero if we were in the middle of compiling another function
12796 when we started on this one. */
12799 finish_function (lineno
, call_poplevel
, nested
)
12804 register tree fndecl
= current_function_decl
;
12805 tree fntype
, ctype
= NULL_TREE
;
12806 rtx last_parm_insn
, insns
;
12807 /* Label to use if this function is supposed to return a value. */
12808 tree no_return_label
= NULL_TREE
;
12809 tree decls
= NULL_TREE
;
12811 /* When we get some parse errors, we can end up without a
12812 current_function_decl, so cope. */
12813 if (fndecl
== NULL_TREE
)
12816 if (! nested
&& function_depth
> 1)
12819 fntype
= TREE_TYPE (fndecl
);
12821 /* TREE_READONLY (fndecl) = 1;
12822 This caused &foo to be of type ptr-to-const-function
12823 which then got a warning when stored in a ptr-to-function variable. */
12825 /* This happens on strange parse errors. */
12826 if (! current_function_parms_stored
)
12829 store_parm_decls ();
12832 if (processing_template_decl
)
12834 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
12836 decls
= getdecls ();
12837 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12838 poplevel (decls
!= NULL_TREE
, 0, 0);
12843 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12845 tree ttype
= target_type (fntype
);
12848 if (IS_AGGR_TYPE (ttype
))
12849 /* Let debugger know it should output info for this type. */
12850 note_debug_info_needed (ttype
);
12852 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
12854 ttype
= target_type (TREE_TYPE (parmdecl
));
12855 if (IS_AGGR_TYPE (ttype
))
12856 /* Let debugger know it should output info for this type. */
12857 note_debug_info_needed (ttype
);
12861 /* Clean house because we will need to reorder insns here. */
12862 do_pending_stack_adjust ();
12866 tree binfo
= TYPE_BINFO (current_class_type
);
12867 tree cond
= integer_one_node
;
12869 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
12871 int ok_to_optimize_dtor
= 0;
12872 int empty_dtor
= get_last_insn () == last_dtor_insn
;
12874 if (current_function_assigns_this
)
12875 cond
= build (NE_EXPR
, boolean_type_node
,
12876 current_class_ptr
, integer_zero_node
);
12879 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
12881 /* If this destructor is empty, then we don't need to check
12882 whether `this' is NULL in some cases. */
12883 if ((flag_this_is_variable
& 1) == 0)
12884 ok_to_optimize_dtor
= 1;
12885 else if (empty_dtor
)
12886 ok_to_optimize_dtor
12887 = (n_baseclasses
== 0
12888 || (n_baseclasses
== 1
12889 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
12892 /* These initializations might go inline. Protect
12893 the binding level of the parms. */
12895 expand_start_bindings (0);
12897 if (current_function_assigns_this
)
12899 current_function_assigns_this
= 0;
12900 current_function_just_assigned_this
= 0;
12903 /* Generate the code to call destructor on base class.
12904 If this destructor belongs to a class with virtual
12905 functions, then set the virtual function table
12906 pointer to represent the type of our base class. */
12908 /* This side-effect makes call to `build_delete' generate the
12909 code we have to have at the end of this destructor. */
12910 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
12912 /* These are two cases where we cannot delegate deletion. */
12913 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
12914 || TYPE_GETS_REG_DELETE (current_class_type
))
12915 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
12916 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12918 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
12919 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
12921 /* If we did not assign to this, then `this' is non-zero at
12922 the end of a destructor. As a special optimization, don't
12923 emit test if this is an empty destructor. If it does nothing,
12924 it does nothing. If it calls a base destructor, the base
12925 destructor will perform the test. */
12927 if (exprstmt
!= error_mark_node
12928 && (TREE_CODE (exprstmt
) != NOP_EXPR
12929 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
12930 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
12932 expand_label (dtor_label
);
12933 if (cond
!= integer_one_node
)
12934 expand_start_cond (cond
, 0);
12935 if (exprstmt
!= void_zero_node
)
12936 /* Don't call `expand_expr_stmt' if we're not going to do
12937 anything, since -Wall will give a diagnostic. */
12938 expand_expr_stmt (exprstmt
);
12940 /* Run destructor on all virtual baseclasses. */
12941 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12943 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12944 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12945 in_charge_node
, integer_two_node
), 0);
12948 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12950 tree vb
= get_vbase
12951 (BINFO_TYPE (vbases
),
12952 TYPE_BINFO (current_class_type
));
12954 (build_scoped_method_call
12955 (current_class_ref
, vb
, dtor_identifier
,
12956 build_expr_list (NULL_TREE
, integer_zero_node
)));
12958 vbases
= TREE_CHAIN (vbases
);
12960 expand_end_cond ();
12963 do_pending_stack_adjust ();
12964 if (cond
!= integer_one_node
)
12965 expand_end_cond ();
12968 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
12970 virtual_size
= c_sizeof (current_class_type
);
12972 /* At the end, call delete if that's what's requested. */
12974 /* FDIS sez: At the point of definition of a virtual destructor
12975 (including an implicit definition), non-placement operator
12976 delete shall be looked up in the scope of the destructor's
12977 class and if found shall be accessible and unambiguous.
12979 This is somewhat unclear, but I take it to mean that if the
12980 class only defines placement deletes we don't do anything here.
12981 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
12982 for us if they ever try to delete one of these. */
12984 if (TYPE_GETS_REG_DELETE (current_class_type
)
12985 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12986 exprstmt
= build_op_delete_call
12987 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
12988 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
12990 exprstmt
= NULL_TREE
;
12994 cond
= build (BIT_AND_EXPR
, integer_type_node
,
12995 in_charge_node
, integer_one_node
);
12996 expand_start_cond (cond
, 0);
12997 expand_expr_stmt (exprstmt
);
12998 expand_end_cond ();
13001 /* End of destructor. */
13002 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
13003 poplevel (2, 0, 0); /* XXX change to 1 */
13005 /* Back to the top of destructor. */
13006 /* Don't execute destructor code if `this' is NULL. */
13010 /* If the dtor is empty, and we know there is not possible way we
13011 could use any vtable entries, before they are possibly set by
13012 a base class dtor, we don't have to setup the vtables, as we
13013 know that any base class dtoring will set up any vtables it
13014 needs. We avoid MI, because one base class dtor can do a
13015 virtual dispatch to an overridden function that would need to
13016 have a non-related vtable set up, we cannot avoid setting up
13017 vtables in that case. We could change this to see if there is
13018 just one vtable. */
13019 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
13021 /* Make all virtual function table pointers in non-virtual base
13022 classes point to CURRENT_CLASS_TYPE's virtual function
13024 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
13026 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13027 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
13030 if (! ok_to_optimize_dtor
)
13032 cond
= build_binary_op (NE_EXPR
,
13033 current_class_ptr
, integer_zero_node
, 1);
13034 expand_start_cond (cond
, 0);
13037 insns
= get_insns ();
13040 last_parm_insn
= get_first_nonparm_insn ();
13041 if (last_parm_insn
== NULL_RTX
)
13042 last_parm_insn
= get_last_insn ();
13044 last_parm_insn
= previous_insn (last_parm_insn
);
13046 emit_insns_after (insns
, last_parm_insn
);
13048 if (! ok_to_optimize_dtor
)
13049 expand_end_cond ();
13051 else if (current_function_assigns_this
)
13053 /* Does not need to call emit_base_init, because
13054 that is done (if needed) just after assignment to this
13057 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13059 end_protect_partials ();
13060 expand_label (ctor_label
);
13061 ctor_label
= NULL_TREE
;
13065 decls
= getdecls ();
13066 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13067 poplevel (decls
!= NULL_TREE
, 0, 0);
13069 /* c_expand_return knows to return 'this' from a constructor. */
13070 c_expand_return (NULL_TREE
);
13072 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl
))) != VOID_TYPE
13073 && return_label
!= NULL_RTX
)
13074 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13076 current_function_assigns_this
= 0;
13077 current_function_just_assigned_this
= 0;
13078 base_init_expr
= NULL_TREE
;
13080 else if (DECL_CONSTRUCTOR_P (fndecl
))
13082 tree cond
= NULL_TREE
, thenclause
= NULL_TREE
;
13083 /* Allow constructor for a type to get a new instance of the object
13084 using `build_new'. */
13085 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
13086 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
13088 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
13090 if (flag_this_is_variable
> 0)
13092 cond
= build_binary_op (EQ_EXPR
,
13093 current_class_ptr
, integer_zero_node
, 1);
13094 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
13095 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
13098 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
13102 if (flag_this_is_variable
> 0)
13104 expand_start_cond (cond
, 0);
13105 expand_expr_stmt (thenclause
);
13106 expand_end_cond ();
13109 /* Emit insns from `emit_base_init' which sets up virtual
13110 function table pointer(s). */
13111 if (base_init_expr
)
13113 expand_expr_stmt (base_init_expr
);
13114 base_init_expr
= NULL_TREE
;
13117 insns
= get_insns ();
13120 /* This is where the body of the constructor begins. */
13122 emit_insns_after (insns
, last_parm_cleanup_insn
);
13124 end_protect_partials ();
13126 /* This is where the body of the constructor ends. */
13127 expand_label (ctor_label
);
13128 ctor_label
= NULL_TREE
;
13132 decls
= getdecls ();
13133 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
13134 poplevel (decls
!= NULL_TREE
, 1, 0);
13137 /* c_expand_return knows to return 'this' from a constructor. */
13138 c_expand_return (NULL_TREE
);
13140 current_function_assigns_this
= 0;
13141 current_function_just_assigned_this
= 0;
13143 else if (DECL_MAIN_P (fndecl
))
13145 /* Make it so that `main' always returns 0 by default. */
13147 c_expand_return (integer_one_node
);
13149 c_expand_return (integer_zero_node
);
13152 else if (return_label
!= NULL_RTX
13153 && current_function_return_value
== NULL_TREE
13154 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
13155 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13157 if (flag_exceptions
)
13158 expand_exception_blocks ();
13160 /* If this function is supposed to return a value, ensure that
13161 we do not fall into the cleanups by mistake. The end of our
13162 function will look like this:
13164 user code (may have return stmt somewhere)
13165 goto no_return_label
13170 NOTE_INSN_FUNCTION_END
13174 If the user omits a return stmt in the USER CODE section, we
13175 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13176 Otherwise, we won't. */
13177 if (no_return_label
)
13179 DECL_CONTEXT (no_return_label
) = fndecl
;
13180 DECL_INITIAL (no_return_label
) = error_mark_node
;
13181 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
13182 DECL_SOURCE_LINE (no_return_label
) = lineno
;
13183 expand_goto (no_return_label
);
13188 /* Remove the binding contour which is used
13189 to catch cleanup-generated temporaries. */
13190 expand_end_bindings (0, 0, 0);
13191 poplevel (0, 0, 0);
13193 /* Emit label at beginning of cleanup code for parameters. */
13194 emit_label (cleanup_label
);
13197 /* Get return value into register if that's where it's supposed to be. */
13198 if (original_result_rtx
)
13199 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
13201 /* Finish building code that will trigger warnings if users forget
13202 to make their functions return values. */
13203 if (no_return_label
|| cleanup_label
)
13204 emit_jump (return_label
);
13205 if (no_return_label
)
13207 /* We don't need to call `expand_*_return' here because we
13208 don't need any cleanups here--this path of code is only
13209 for error checking purposes. */
13210 expand_label (no_return_label
);
13213 /* Generate rtl for function exit. */
13214 expand_function_end (input_filename
, lineno
, 1);
13217 /* This must come after expand_function_end because cleanups might
13218 have declarations (from inline functions) that need to go into
13219 this function's blocks. */
13220 if (current_binding_level
->parm_flag
!= 1)
13221 my_friendly_abort (122);
13222 poplevel (1, 0, 1);
13224 /* Reset scope for C++: if we were in the scope of a class,
13225 then when we finish this function, we are not longer so.
13226 This cannot be done until we know for sure that no more
13227 class members will ever be referenced in this function
13228 (i.e., calls to destructors). */
13229 if (current_class_name
)
13231 ctype
= current_class_type
;
13232 pop_nested_class (1);
13235 /* Must mark the RESULT_DECL as being in this function. */
13236 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
13238 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13239 to the FUNCTION_DECL node itself. */
13240 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
13242 if (! processing_template_decl
)
13244 int saved_flag_keep_inline_functions
=
13245 flag_keep_inline_functions
;
13247 /* So we can tell if jump_optimize sets it to 1. */
13250 if (DECL_CONTEXT (fndecl
) != NULL_TREE
13251 && hack_decl_function_context (fndecl
))
13252 /* Trick rest_of_compilation into not deferring output of this
13253 function, even if it is inline, since the rtl_obstack for
13254 this function is the function_obstack of the enclosing
13255 function and will be deallocated when the enclosing
13256 function is gone. See save_tree_status. */
13257 flag_keep_inline_functions
= 1;
13259 /* Run the optimizers and output the assembler code for this
13262 if (DECL_ARTIFICIAL (fndecl
))
13264 /* Do we really *want* to inline this synthesized method? */
13266 int save_fif
= flag_inline_functions
;
13267 flag_inline_functions
= 1;
13269 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13270 will check our size. */
13271 DECL_INLINE (fndecl
) = 0;
13273 rest_of_compilation (fndecl
);
13274 flag_inline_functions
= save_fif
;
13277 rest_of_compilation (fndecl
);
13279 flag_keep_inline_functions
= saved_flag_keep_inline_functions
;
13281 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
13283 /* Set DECL_EXTERNAL so that assemble_external will be called as
13284 necessary. We'll clear it again in finish_file. */
13285 if (! DECL_EXTERNAL (fndecl
))
13286 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
13287 DECL_EXTERNAL (fndecl
) = 1;
13288 mark_inline_for_output (fndecl
);
13291 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
13292 note_debug_info_needed (ctype
);
13294 current_function_returns_null
|= can_reach_end
;
13296 /* Since we don't normally go through c_expand_return for constructors,
13297 this normally gets the wrong value.
13298 Also, named return values have their return codes emitted after
13299 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13300 if (DECL_CONSTRUCTOR_P (fndecl
)
13301 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
13302 current_function_returns_null
= 0;
13304 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
13305 cp_warning ("`noreturn' function `%D' does return", fndecl
);
13306 else if ((warn_return_type
|| pedantic
)
13307 && current_function_returns_null
13308 && TREE_CODE (TREE_TYPE (fntype
)) != VOID_TYPE
)
13310 /* If this function returns non-void and control can drop through,
13312 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
13314 /* With just -W, complain only if function returns both with
13315 and without a value. */
13316 else if (extra_warnings
13317 && current_function_returns_value
&& current_function_returns_null
)
13318 warning ("this function may return with or without a value");
13323 /* Free all the tree nodes making up this function. */
13324 /* Switch back to allocating nodes permanently
13325 until we start another function. */
13326 if (processing_template_decl
)
13328 --minimal_parse_mode
;
13329 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
13333 permanent_allocation (1);
13335 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
13339 /* Stop pointing to the local nodes about to be freed. */
13340 /* But DECL_INITIAL must remain nonzero so we know this
13341 was an actual function definition. */
13342 DECL_INITIAL (fndecl
) = error_mark_node
;
13343 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
13344 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
13347 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
13348 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
13349 if (DECL_STATIC_DESTRUCTOR (fndecl
))
13350 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
13354 /* Let the error reporting routines know that we're outside a
13355 function. For a nested function, this value is used in
13356 pop_cp_function_context and then reset via pop_function_context. */
13357 current_function_decl
= NULL_TREE
;
13360 named_label_uses
= NULL
;
13361 current_class_ptr
= NULL_TREE
;
13362 current_class_ref
= NULL_TREE
;
13365 /* Create the FUNCTION_DECL for a function definition.
13366 LINE1 is the line number that the definition absolutely begins on.
13367 LINE2 is the line number that the name of the function appears on.
13368 DECLSPECS and DECLARATOR are the parts of the declaration;
13369 they describe the return type and the name of the function,
13370 but twisted together in a fashion that parallels the syntax of C.
13372 This function creates a binding context for the function body
13373 as well as setting up the FUNCTION_DECL in current_function_decl.
13375 Returns a FUNCTION_DECL on success.
13377 If the DECLARATOR is not suitable for a function (it defines a datum
13378 instead), we return 0, which tells yyparse to report a parse error.
13380 May return void_type_node indicating that this method is actually
13381 a friend. See grokfield for more details.
13383 Came here with a `.pushlevel' .
13385 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13386 CHANGES TO CODE IN `grokfield'. */
13389 start_method (declspecs
, declarator
)
13390 tree declarator
, declspecs
;
13392 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
13395 /* Something too ugly to handle. */
13396 if (fndecl
== NULL_TREE
)
13399 /* Pass friends other than inline friend functions back. */
13400 if (fndecl
== void_type_node
)
13403 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
13404 /* Not a function, tell parser to report parse error. */
13407 if (IS_SIGNATURE (current_class_type
))
13408 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
13410 if (DECL_IN_AGGR_P (fndecl
))
13412 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
13414 if (DECL_CONTEXT (fndecl
)
13415 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
13416 cp_error ("`%D' is already defined in class %s", fndecl
,
13417 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
13419 return void_type_node
;
13422 DECL_THIS_INLINE (fndecl
) = 1;
13424 if (flag_default_inline
)
13425 DECL_INLINE (fndecl
) = 1;
13427 /* We process method specializations in finish_struct_1. */
13428 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
13429 fndecl
= push_template_decl (fndecl
);
13431 /* We read in the parameters on the maybepermanent_obstack,
13432 but we won't be getting back to them until after we
13433 may have clobbered them. So the call to preserve_data
13434 will keep them safe. */
13437 if (! DECL_FRIEND_P (fndecl
))
13439 if (TREE_CHAIN (fndecl
))
13441 fndecl
= copy_node (fndecl
);
13442 TREE_CHAIN (fndecl
) = NULL_TREE
;
13445 if (DECL_CONSTRUCTOR_P (fndecl
))
13447 if (! grok_ctor_properties (current_class_type
, fndecl
))
13448 return void_type_node
;
13450 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
13451 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
13454 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
13456 /* Make a place for the parms */
13458 current_binding_level
->parm_flag
= 1;
13460 DECL_IN_AGGR_P (fndecl
) = 1;
13464 /* Go through the motions of finishing a function definition.
13465 We don't compile this method until after the whole class has
13468 FINISH_METHOD must return something that looks as though it
13469 came from GROKFIELD (since we are defining a method, after all).
13471 This is called after parsing the body of the function definition.
13472 STMTS is the chain of statements that makes up the function body.
13474 DECL is the ..._DECL that `start_method' provided. */
13477 finish_method (decl
)
13480 register tree fndecl
= decl
;
13483 register tree link
;
13485 if (decl
== void_type_node
)
13488 old_initial
= DECL_INITIAL (fndecl
);
13490 /* Undo the level for the parms (from start_method).
13491 This is like poplevel, but it causes nothing to be
13492 saved. Saving information here confuses symbol-table
13493 output routines. Besides, this information will
13494 be correctly output when this method is actually
13497 /* Clear out the meanings of the local variables of this level;
13498 also record in each decl which block it belongs to. */
13500 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
13502 if (DECL_NAME (link
) != NULL_TREE
)
13503 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
13504 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
13505 DECL_CONTEXT (link
) = NULL_TREE
;
13508 /* Restore all name-meanings of the outer levels
13509 that were shadowed by this level. */
13511 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
13512 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13513 for (link
= current_binding_level
->class_shadowed
;
13514 link
; link
= TREE_CHAIN (link
))
13515 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
13516 for (link
= current_binding_level
->type_shadowed
;
13517 link
; link
= TREE_CHAIN (link
))
13518 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
13520 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
13521 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
13522 current_binding_level
->parm_flag
,
13523 current_binding_level
->keep
);
13525 poplevel (0, 0, 0);
13527 DECL_INITIAL (fndecl
) = old_initial
;
13529 /* We used to check if the context of FNDECL was different from
13530 current_class_type as another way to get inside here. This didn't work
13531 for String.cc in libg++. */
13532 if (DECL_FRIEND_P (fndecl
))
13534 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
13535 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
13536 decl
= void_type_node
;
13542 /* Called when a new struct TYPE is defined.
13543 If this structure or union completes the type of any previous
13544 variable declaration, lay it out and output its rtl. */
13547 hack_incomplete_structures (type
)
13552 if (current_binding_level
->incomplete
== NULL_TREE
)
13555 if (!type
) /* Don't do this for class templates. */
13558 for (list
= ¤t_binding_level
->incomplete
; *list
; )
13560 tree decl
= TREE_VALUE (*list
);
13561 if ((decl
&& TREE_TYPE (decl
) == type
)
13562 || (TREE_TYPE (decl
)
13563 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13564 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
13566 int toplevel
= toplevel_bindings_p ();
13567 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
13568 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
13569 layout_type (TREE_TYPE (decl
));
13570 layout_decl (decl
, 0);
13571 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
13575 expand_decl (decl
);
13576 cleanup
= maybe_build_cleanup (decl
);
13577 expand_decl_init (decl
);
13578 if (! expand_decl_cleanup (decl
, cleanup
))
13579 cp_error ("parser lost in parsing declaration of `%D'",
13582 *list
= TREE_CHAIN (*list
);
13585 list
= &TREE_CHAIN (*list
);
13589 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13590 See build_delete for information about AUTO_DELETE.
13592 Don't build these on the momentary obstack; they must live
13593 the life of the binding contour. */
13596 maybe_build_cleanup_1 (decl
, auto_delete
)
13597 tree decl
, auto_delete
;
13599 tree type
= TREE_TYPE (decl
);
13600 if (TYPE_NEEDS_DESTRUCTOR (type
))
13602 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
13605 if (TREE_CODE (decl
) != PARM_DECL
)
13606 temp
= suspend_momentary ();
13608 if (TREE_CODE (type
) == ARRAY_TYPE
)
13612 mark_addressable (decl
);
13613 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
13616 /* Optimize for space over speed here. */
13617 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
13618 || flag_expensive_optimizations
)
13619 flags
|= LOOKUP_NONVIRTUAL
;
13621 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
13623 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
13624 && ! TYPE_HAS_DESTRUCTOR (type
))
13625 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
13626 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
13628 if (TREE_CODE (decl
) != PARM_DECL
)
13629 resume_momentary (temp
);
13636 /* If DECL is of a type which needs a cleanup, build that cleanup
13637 here. The cleanup does free the storage with a call to delete. */
13640 maybe_build_cleanup_and_delete (decl
)
13643 return maybe_build_cleanup_1 (decl
, integer_three_node
);
13646 /* If DECL is of a type which needs a cleanup, build that cleanup
13647 here. The cleanup does not free the storage with a call a delete. */
13650 maybe_build_cleanup (decl
)
13653 return maybe_build_cleanup_1 (decl
, integer_two_node
);
13656 /* Expand a C++ expression at the statement level.
13657 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13658 The C++ type checker should get all of these out when
13659 expressions are combined with other, type-providing, expressions,
13660 leaving only orphan expressions, such as:
13662 &class::bar; / / takes its address, but does nothing with it. */
13665 cplus_expand_expr_stmt (exp
)
13668 if (processing_template_decl
)
13670 add_tree (build_min_nt (EXPR_STMT
, exp
));
13674 /* Arrange for all temps to disappear. */
13675 expand_start_target_temps ();
13677 if (TREE_TYPE (exp
) == unknown_type_node
)
13679 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
13680 error ("address of overloaded function with no contextual type information");
13681 else if (TREE_CODE (exp
) == COMPONENT_REF
)
13682 warning ("useless reference to a member function name, did you forget the ()?");
13686 if (TREE_CODE (exp
) == FUNCTION_DECL
)
13688 cp_warning ("reference, not call, to function `%D'", exp
);
13689 warning ("at this point in file");
13693 /* We should do this eventually, but right now this causes regex.o from
13694 libg++ to miscompile, and tString to core dump. */
13695 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
13698 /* Strip unused implicit INDIRECT_REFs of references. */
13699 if (TREE_CODE (exp
) == INDIRECT_REF
13700 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp
, 0))) == REFERENCE_TYPE
)
13701 exp
= TREE_OPERAND (exp
, 0);
13703 /* If we don't do this, we end up down inside expand_expr
13704 trying to do TYPE_MODE on the ERROR_MARK, and really
13705 go outside the bounds of the type. */
13706 if (exp
!= error_mark_node
)
13707 expand_expr_stmt (break_out_cleanups (exp
));
13710 /* Clean up any pending cleanups. This happens when a function call
13711 returns a cleanup-needing value that nobody uses. */
13712 expand_end_target_temps ();
13715 /* When a stmt has been parsed, this function is called.
13717 Currently, this function only does something within a
13718 constructor's scope: if a stmt has just assigned to this,
13719 and we are in a derived class, we call `emit_base_init'. */
13724 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
13727 if (current_function_assigns_this
13728 || ! current_function_just_assigned_this
)
13730 if (DECL_CONSTRUCTOR_P (current_function_decl
))
13732 /* Constructors must wait until we are out of control
13733 zones before calling base constructors. */
13734 if (cond_stack
|| loop_stack
|| case_stack
)
13736 expand_expr_stmt (base_init_expr
);
13737 check_base_init (current_class_type
);
13739 current_function_assigns_this
= 1;
13742 /* Change a static member function definition into a FUNCTION_TYPE, instead
13743 of the METHOD_TYPE that we create when it's originally parsed.
13745 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13746 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13747 other decls. Either pass the addresses of local variables or NULL. */
13750 revert_static_member_fn (decl
, fn
, argtypes
)
13751 tree
*decl
, *fn
, *argtypes
;
13754 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
13755 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
13757 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
13758 cp_error ("static member function `%#D' declared const", *decl
);
13759 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
13760 cp_error ("static member function `%#D' declared volatile", *decl
);
13762 args
= TREE_CHAIN (args
);
13763 tmp
= build_function_type (TREE_TYPE (function
), args
);
13764 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
13765 TYPE_VOLATILE (function
));
13766 tmp
= build_exception_variant (tmp
,
13767 TYPE_RAISES_EXCEPTIONS (function
));
13768 TREE_TYPE (*decl
) = tmp
;
13769 if (DECL_ARGUMENTS (*decl
))
13770 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
13771 DECL_STATIC_FUNCTION_P (*decl
) = 1;
13779 id_in_current_class (id
)
13782 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
13789 int warn_about_return_type
;
13791 int just_assigned_this
;
13793 int temp_name_counter
;
13795 tree shadowed_labels
;
13798 rtx last_dtor_insn
;
13799 rtx last_parm_cleanup_insn
;
13800 tree base_init_list
;
13801 tree member_init_list
;
13802 tree base_init_expr
;
13803 tree current_class_ptr
;
13804 tree current_class_ref
;
13806 struct cp_function
*next
;
13807 struct binding_level
*binding_level
;
13808 int static_labelno
;
13811 static struct cp_function
*cp_function_chain
;
13813 extern int temp_name_counter
;
13815 /* Save and reinitialize the variables
13816 used during compilation of a C++ function. */
13819 push_cp_function_context (context
)
13822 struct cp_function
*p
13823 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
13825 push_function_context_to (context
);
13827 p
->next
= cp_function_chain
;
13828 cp_function_chain
= p
;
13830 p
->named_labels
= named_labels
;
13831 p
->shadowed_labels
= shadowed_labels
;
13832 p
->returns_value
= current_function_returns_value
;
13833 p
->returns_null
= current_function_returns_null
;
13834 p
->warn_about_return_type
= warn_about_return_type
;
13835 p
->binding_level
= current_binding_level
;
13836 p
->ctor_label
= ctor_label
;
13837 p
->dtor_label
= dtor_label
;
13838 p
->last_dtor_insn
= last_dtor_insn
;
13839 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
13840 p
->assigns_this
= current_function_assigns_this
;
13841 p
->just_assigned_this
= current_function_just_assigned_this
;
13842 p
->parms_stored
= current_function_parms_stored
;
13843 p
->result_rtx
= original_result_rtx
;
13844 p
->base_init_expr
= base_init_expr
;
13845 p
->temp_name_counter
= temp_name_counter
;
13846 p
->base_init_list
= current_base_init_list
;
13847 p
->member_init_list
= current_member_init_list
;
13848 p
->current_class_ptr
= current_class_ptr
;
13849 p
->current_class_ref
= current_class_ref
;
13850 p
->static_labelno
= static_labelno
;
13853 /* Restore the variables used during compilation of a C++ function. */
13856 pop_cp_function_context (context
)
13859 struct cp_function
*p
= cp_function_chain
;
13862 /* Bring back all the labels that were shadowed. */
13863 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
13864 if (DECL_NAME (TREE_VALUE (link
)) != 0)
13865 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
13866 TREE_VALUE (link
));
13868 pop_function_context_from (context
);
13870 cp_function_chain
= p
->next
;
13872 named_labels
= p
->named_labels
;
13873 shadowed_labels
= p
->shadowed_labels
;
13874 current_function_returns_value
= p
->returns_value
;
13875 current_function_returns_null
= p
->returns_null
;
13876 warn_about_return_type
= p
->warn_about_return_type
;
13877 current_binding_level
= p
->binding_level
;
13878 ctor_label
= p
->ctor_label
;
13879 dtor_label
= p
->dtor_label
;
13880 last_dtor_insn
= p
->last_dtor_insn
;
13881 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
13882 current_function_assigns_this
= p
->assigns_this
;
13883 current_function_just_assigned_this
= p
->just_assigned_this
;
13884 current_function_parms_stored
= p
->parms_stored
;
13885 original_result_rtx
= p
->result_rtx
;
13886 base_init_expr
= p
->base_init_expr
;
13887 temp_name_counter
= p
->temp_name_counter
;
13888 current_base_init_list
= p
->base_init_list
;
13889 current_member_init_list
= p
->member_init_list
;
13890 current_class_ptr
= p
->current_class_ptr
;
13891 current_class_ref
= p
->current_class_ref
;
13892 static_labelno
= p
->static_labelno
;
13900 return function_depth
!= 0;