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 error_code 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 cp_warning (ec_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 (ec_label_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 (ec_label_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 (ec_namespace_alias_not_allowed_here_assuming,
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 (ec_redeclared_as_member_function, newdecl);
2525 cp_compiler_error (ec_redeclared_as_nonmember_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 if (TREE_CODE (newdecl) == TYPE_DECL)
2609 name = DECL_ASSEMBLER_NAME (newdecl);
2610 if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl))
2612 /* It's okay to redeclare an ANSI built-in function as static,
2613 or to declare a non-ANSI built-in function as anything. */
2614 if (! (TREE_CODE (newdecl) == FUNCTION_DECL
2615 && olddecl != NULL_TREE
2616 && TREE_CODE (olddecl) == FUNCTION_DECL
2617 && (DECL_BUILT_IN (olddecl)
2618 || DECL_BUILT_IN_NONANSI (olddecl))))
2620 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name)
2621 ? ec_implicit_extern_static
2622 : ec_explicit_extern_static, newdecl);
2623 if (olddecl != NULL_TREE)
2624 cp_pedwarn_at (ec_previous_declaration_of, olddecl);
2629 /* Handle when a new declaration NEWDECL has the same name as an old
2630 one OLDDECL in the same binding contour. Prints an error message
2633 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2634 Otherwise, return 0. */
2637 duplicate_decls (newdecl, olddecl)
2638 tree newdecl, olddecl;
2640 extern struct obstack permanent_obstack;
2641 unsigned olddecl_uid = DECL_UID (olddecl);
2642 int olddecl_friend = 0, types_match = 0;
2643 int new_defines_function = 0;
2645 if (newdecl == olddecl)
2648 types_match = decls_match (newdecl, olddecl);
2650 /* If either the type of the new decl or the type of the old decl is an
2651 error_mark_node, then that implies that we have already issued an
2652 error (earlier) for some bogus type specification, and in that case,
2653 it is rather pointless to harass the user with yet more error message
2654 about the same declaration, so just pretend the types match here. */
2655 if (TREE_TYPE (newdecl) == error_mark_node
2656 || TREE_TYPE (olddecl) == error_mark_node)
2659 /* Check for redeclaration and other discrepancies. */
2660 if (TREE_CODE (olddecl) == FUNCTION_DECL
2661 && DECL_ARTIFICIAL (olddecl)
2662 && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl)))
2664 /* If you declare a built-in or predefined function name as static,
2665 the old definition is overridden, but optionally warn this was a
2666 bad choice of name. Ditto for overloads. */
2667 if (! TREE_PUBLIC (newdecl)
2668 || (TREE_CODE (newdecl) == FUNCTION_DECL
2669 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)))
2672 cp_warning (ec_shadowing_s_function,
2673 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
2675 /* Discard the old built-in function. */
2678 else if (! types_match)
2680 if (TREE_CODE (newdecl) != FUNCTION_DECL)
2682 /* If the built-in is not ansi, then programs can override
2683 it even globally without an error. */
2684 if (! DECL_BUILT_IN (olddecl))
2685 cp_warning (ec_library_function_redeclared_as_nonfunction,
2689 cp_error (ec_declaration_of, newdecl);
2690 cp_error (ec_conflicts_with_builtin_declaration,
2696 cp_warning (ec_declaration_of, newdecl);
2697 cp_warning (ec_conflicts_with_builtin_declaration,
2701 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
2703 if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl)
2704 && TREE_CODE (newdecl) != TYPE_DECL
2705 && ! (TREE_CODE (newdecl) == TEMPLATE_DECL
2706 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL))
2707 || (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl)
2708 && TREE_CODE (olddecl) != TYPE_DECL
2709 && ! (TREE_CODE (olddecl) == TEMPLATE_DECL
2710 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl))
2713 /* We do nothing special here, because C++ does such nasty
2714 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2715 get shadowed, and know that if we need to find a TYPE_DECL
2716 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2717 slot of the identifier. */
2721 if ((TREE_CODE (newdecl) == FUNCTION_DECL
2722 && DECL_FUNCTION_TEMPLATE_P (olddecl))
2723 || (TREE_CODE (olddecl) == FUNCTION_DECL
2724 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
2727 cp_error (ec_redeclared_as_different_kind_of_symbol, newdecl);
2728 if (TREE_CODE (olddecl) == TREE_LIST)
2729 olddecl = TREE_VALUE (olddecl);
2730 cp_error_at (ec_previous_declaration_of, olddecl);
2732 /* New decl is completely inconsistent with the old one =>
2733 tell caller to replace the old one. */
2737 else if (!types_match)
2739 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2741 /* The name of a class template may not be declared to refer to
2742 any other template, class, function, object, namespace, value,
2743 or type in the same scope. */
2744 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
2745 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2747 cp_error (ec_declaration_of_template, newdecl);
2748 cp_error_at (ec_conflicts_with_previous_declaration,
2751 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
2752 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
2753 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
2754 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))), 3)
2755 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
2756 DECL_TEMPLATE_PARMS (olddecl)))
2758 cp_error (ec_new_declaration, newdecl);
2759 cp_error_at (ec_ambiguates_old_declaration, olddecl);
2763 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2765 if (DECL_LANGUAGE (newdecl) == lang_c
2766 && DECL_LANGUAGE (olddecl) == lang_c)
2768 cp_error (ec_declaration_of_function_conflicts_with,
2770 cp_error_at (ec_previous_declaration_here, olddecl);
2772 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
2773 TYPE_ARG_TYPES (TREE_TYPE (olddecl)), 3))
2775 cp_error (ec_new_declaration, newdecl);
2776 cp_error_at (ec_ambiguates_old_declaration, olddecl);
2782 /* Already complained about this, so don't do so again. */
2783 else if (current_class_type == NULL_TREE
2784 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type)
2786 cp_error (ec_conflicting_types_for, newdecl);
2787 cp_error_at (ec_previous_declaration_as, olddecl);
2790 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2791 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl)
2792 && (!DECL_TEMPLATE_INFO (newdecl)
2793 || (DECL_TI_TEMPLATE (newdecl)
2794 != DECL_TI_TEMPLATE (olddecl))))
2795 || (DECL_TEMPLATE_SPECIALIZATION (newdecl)
2796 && (!DECL_TEMPLATE_INFO (olddecl)
2797 || (DECL_TI_TEMPLATE (olddecl)
2798 != DECL_TI_TEMPLATE (newdecl))))))
2799 /* It's OK to have a template specialization and a non-template
2800 with the same type, or to have specializations of two
2801 different templates with the same type. Note that if one is a
2802 specialization, and the other is an instantiation of the same
2803 template, that we do not exit at this point. That situation
2804 can occur if we instantiate a template class, and then
2805 specialize one of its methods. This situation is legal, but
2806 the declarations must be merged in the usual way. */
2808 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2809 && ((DECL_TEMPLATE_INSTANTIATION (olddecl)
2810 && !DECL_USE_TEMPLATE (newdecl))
2811 || (DECL_TEMPLATE_INSTANTIATION (newdecl)
2812 && !DECL_USE_TEMPLATE (olddecl))))
2813 /* One of the declarations is a template instantiation, and the
2814 other is not a template at all. That's OK. */
2816 else if (TREE_CODE (newdecl) == NAMESPACE_DECL
2817 && DECL_NAMESPACE_ALIAS (newdecl)
2818 && DECL_NAMESPACE_ALIAS (newdecl) == DECL_NAMESPACE_ALIAS (olddecl))
2819 /* Redeclaration of namespace alias, ignore it. */
2823 error_code ec = redeclaration_error_message (newdecl, olddecl);
2824 if (ec != ec_last_error_code)
2826 cp_error (ec, newdecl);
2827 if (DECL_NAME (olddecl) != NULL_TREE)
2828 cp_error_at ((DECL_INITIAL (olddecl)
2829 && namespace_bindings_p ())
2830 ? ec_previously_defined_here
2831 : ec_previously_declared_here_2, olddecl);
2833 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2834 && DECL_INITIAL (olddecl) != NULL_TREE
2835 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
2836 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
2838 /* Prototype decl follows defn w/o prototype. */
2839 cp_warning_at (ec_prototype_for, newdecl);
2840 cp_warning_at (ec_follows_nonprototype_definition_here, olddecl);
2842 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2843 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
2845 /* extern "C" int foo ();
2846 int foo () { bar (); }
2848 if (current_lang_stack == current_lang_base)
2849 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2852 cp_error_at (ec_previous_declaration_of_with_linkage,
2853 olddecl, DECL_LANGUAGE (olddecl));
2854 cp_error (ec_conflicts_with_new_declaration_with_linkage,
2855 DECL_LANGUAGE (newdecl));
2859 if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl))
2861 else if (TREE_CODE (olddecl) == FUNCTION_DECL)
2863 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
2864 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
2867 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
2868 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
2870 for (; t1 && t1 != void_list_node;
2871 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
2872 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
2874 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
2879 cp_pedwarn (ec_default_argument_given_for_parameter_d_of,
2881 cp_pedwarn_at (ec_after_previous_specification_in,
2887 cp_error (ec_default_argument_given_for_parameter_d_of,
2889 cp_error_at (ec_after_previous_specification_in,
2894 if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)
2895 && TREE_ADDRESSABLE (olddecl) && warn_inline)
2897 cp_warning (ec_was_used_before_it_was_declared_inline,
2899 cp_warning_at (ec_previous_noninline_declaration_here,
2903 /* These bits are logically part of the type for non-functions. */
2904 else if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl)
2905 || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl))
2907 cp_pedwarn (ec_type_qualifiers_for, newdecl);
2908 cp_pedwarn_at (ec_conflict_with_previous_decl, olddecl);
2912 /* If new decl is `static' and an `extern' was seen previously,
2914 warn_extern_redeclared_static (newdecl, olddecl);
2916 /* We have committed to returning 1 at this point. */
2917 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2919 /* Now that functions must hold information normally held
2920 by field decls, there is extra work to do so that
2921 declaration information does not get destroyed during
2923 if (DECL_VINDEX (olddecl))
2924 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
2925 if (DECL_CONTEXT (olddecl))
2926 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
2927 if (DECL_CLASS_CONTEXT (olddecl))
2928 DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl);
2929 if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0)
2930 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
2931 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
2932 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
2933 DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl);
2934 DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl);
2935 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl);
2936 new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE;
2938 /* Optionally warn about more than one declaration for the same
2939 name, but don't warn about a function declaration followed by a
2941 if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl)
2942 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
2943 /* Don't warn about extern decl followed by definition. */
2944 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
2945 /* Don't warn about friends, let add_friend take care of it. */
2946 && ! DECL_FRIEND_P (newdecl))
2948 cp_warning (ec_redundant_redeclaration_of_in_same_scope, newdecl);
2949 cp_warning_at (ec_previous_declaration_of, olddecl);
2953 /* Deal with C++: must preserve virtual function table size. */
2954 if (TREE_CODE (olddecl) == TYPE_DECL)
2956 register tree newtype = TREE_TYPE (newdecl);
2957 register tree oldtype = TREE_TYPE (olddecl);
2959 if (newtype != error_mark_node && oldtype != error_mark_node
2960 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
2962 CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype);
2963 CLASSTYPE_FRIEND_CLASSES (newtype)
2964 = CLASSTYPE_FRIEND_CLASSES (oldtype);
2968 /* Copy all the DECL_... slots specified in the new decl
2969 except for any that we copy here from the old type. */
2970 DECL_MACHINE_ATTRIBUTES (newdecl)
2971 = merge_machine_decl_attributes (olddecl, newdecl);
2973 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2975 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl),
2976 DECL_TEMPLATE_RESULT (olddecl)))
2977 cp_error (ec_invalid_redeclaration_of, newdecl);
2978 TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl));
2979 DECL_TEMPLATE_PARMS (olddecl) = DECL_TEMPLATE_PARMS (newdecl);
2980 if (DECL_TEMPLATE_INFO (newdecl))
2981 DECL_TEMPLATE_INFO (olddecl) = DECL_TEMPLATE_INFO (newdecl);
2982 DECL_TEMPLATE_SPECIALIZATIONS (olddecl)
2983 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl),
2984 DECL_TEMPLATE_SPECIALIZATIONS (newdecl));
2991 /* Automatically handles default parameters. */
2992 tree oldtype = TREE_TYPE (olddecl);
2995 /* Make sure we put the new type in the same obstack as the old one. */
2997 push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
3000 push_obstacks_nochange ();
3001 end_temporary_allocation ();
3004 /* Merge the data types specified in the two decls. */
3005 newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
3007 if (TREE_CODE (newdecl) == VAR_DECL)
3008 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
3009 /* Do this after calling `common_type' so that default
3010 parameters don't confuse us. */
3011 else if (TREE_CODE (newdecl) == FUNCTION_DECL
3012 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
3013 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
3015 TREE_TYPE (newdecl) = build_exception_variant (newtype,
3016 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
3017 TREE_TYPE (olddecl) = build_exception_variant (newtype,
3018 TYPE_RAISES_EXCEPTIONS (oldtype));
3020 if ((pedantic || ! DECL_IN_SYSTEM_HEADER (olddecl))
3021 && DECL_SOURCE_LINE (olddecl) != 0
3023 && ! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
3025 cp_pedwarn (ec_declaration_of_throws_different_exceptions,
3027 cp_pedwarn_at (ec_previous_declaration_here, olddecl);
3030 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
3032 /* Lay the type out, unless already done. */
3033 if (newtype != canonical_type_variant (oldtype)
3034 && TREE_TYPE (newdecl) != error_mark_node
3035 && !(processing_template_decl && uses_template_parms (newdecl)))
3036 layout_type (TREE_TYPE (newdecl));
3038 if ((TREE_CODE (newdecl) == VAR_DECL
3039 || TREE_CODE (newdecl) == PARM_DECL
3040 || TREE_CODE (newdecl) == RESULT_DECL
3041 || TREE_CODE (newdecl) == FIELD_DECL
3042 || TREE_CODE (newdecl) == TYPE_DECL)
3043 && !(processing_template_decl && uses_template_parms (newdecl)))
3044 layout_decl (newdecl, 0);
3046 /* Merge the type qualifiers. */
3047 if (TREE_READONLY (newdecl))
3048 TREE_READONLY (olddecl) = 1;
3049 if (TREE_THIS_VOLATILE (newdecl))
3050 TREE_THIS_VOLATILE (olddecl) = 1;
3052 /* Merge the initialization information. */
3053 if (DECL_INITIAL (newdecl) == NULL_TREE
3054 && DECL_INITIAL (olddecl) != NULL_TREE)
3056 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
3057 DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
3058 DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
3059 if (DECL_LANG_SPECIFIC (newdecl)
3060 && DECL_LANG_SPECIFIC (olddecl))
3061 DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl);
3064 /* Merge the section attribute.
3065 We want to issue an error if the sections conflict but that must be
3066 done later in decl_attributes since we are called before attributes
3068 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
3069 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
3071 /* Keep the old rtl since we can safely use it, unless it's the
3072 call to abort() used for abstract virtuals. */
3073 if ((DECL_LANG_SPECIFIC (olddecl)
3074 && !DECL_ABSTRACT_VIRTUAL_P (olddecl))
3075 || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl))
3076 DECL_RTL (newdecl) = DECL_RTL (olddecl);
3080 /* If cannot merge, then use the new type and qualifiers,
3081 and don't preserve the old rtl. */
3084 /* Clean out any memory we had of the old declaration. */
3085 tree oldstatic = value_member (olddecl, static_aggregates);
3087 TREE_VALUE (oldstatic) = error_mark_node;
3089 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
3090 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
3091 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
3092 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
3095 /* Merge the storage class information. */
3096 DECL_WEAK (newdecl) |= DECL_WEAK (olddecl);
3097 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
3098 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
3099 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
3100 if (! DECL_EXTERNAL (olddecl))
3101 DECL_EXTERNAL (newdecl) = 0;
3103 if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl))
3105 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
3106 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
3107 DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl);
3108 /* Don't really know how much of the language-specific
3109 values we should copy from old to new. */
3110 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
3111 DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl);
3112 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
3113 if (DECL_TEMPLATE_INFO (newdecl) == NULL_TREE)
3115 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
3116 DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl);
3118 olddecl_friend = DECL_FRIEND_P (olddecl);
3121 if (TREE_CODE (newdecl) == FUNCTION_DECL)
3123 if (DECL_TEMPLATE_INSTANTIATION (olddecl)
3124 && !DECL_TEMPLATE_INSTANTIATION (newdecl))
3126 /* If newdecl is not a specialization, then it is not a
3127 template-related function at all. And that means that we
3128 shoud have exited above, returning 0. */
3129 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl),
3132 if (TREE_USED (olddecl))
3133 /* From [temp.expl.spec]:
3135 If a template, a member template or the member of a class
3136 template is explicitly specialized then that
3137 specialization shall be declared before the first use of
3138 that specialization that would cause an implicit
3139 instantiation to take place, in every translation unit in
3140 which such a use occurs. */
3141 cp_error (ec_explicit_specialization_of_after_first_use,
3144 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl);
3146 DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl);
3148 /* If either decl says `inline', this fn is inline, unless its
3149 definition was passed already. */
3150 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
3151 DECL_INLINE (olddecl) = 1;
3152 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
3156 DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl);
3157 DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl);
3158 DECL_RTL (olddecl) = DECL_RTL (newdecl);
3160 if (! types_match || new_defines_function)
3162 /* These need to be copied so that the names are available. */
3163 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
3164 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
3166 if (new_defines_function)
3167 /* If defining a function declared with other language
3168 linkage, use the previously declared language linkage. */
3169 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
3172 /* If redeclaring a builtin function, and not a definition,
3173 it stays built in. */
3174 if (DECL_BUILT_IN (olddecl))
3176 DECL_BUILT_IN (newdecl) = 1;
3177 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
3178 /* If we're keeping the built-in definition, keep the rtl,
3179 regardless of declaration matches. */
3180 DECL_RTL (newdecl) = DECL_RTL (olddecl);
3183 DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
3185 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
3186 if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl)))
3187 /* Previously saved insns go together with
3188 the function's previous definition. */
3189 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
3190 /* Don't clear out the arguments if we're redefining a function. */
3191 if (DECL_ARGUMENTS (olddecl))
3192 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
3194 if (DECL_LANG_SPECIFIC (olddecl))
3195 DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl);
3198 if (TREE_CODE (newdecl) == NAMESPACE_DECL)
3200 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
3203 /* Now preserve various other info from the definition. */
3204 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
3205 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
3206 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
3207 DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl);
3209 if (TREE_CODE (newdecl) == FUNCTION_DECL)
3212 struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl);
3213 struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl);
3215 function_size = sizeof (struct tree_decl);
3217 bcopy ((char *) newdecl + sizeof (struct tree_common),
3218 (char *) olddecl + sizeof (struct tree_common),
3219 function_size - sizeof (struct tree_common));
3221 /* Can we safely free the storage used by newdecl? */
3223 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3224 & ~ obstack_alignment_mask (&permanent_obstack))
3226 if (DECL_TEMPLATE_INSTANTIATION (newdecl))
3228 /* If newdecl is a template instantiation, it is possible that
3229 the following sequence of events has occurred:
3231 o A friend function was declared in a class template. The
3232 class template was instantiated.
3234 o The instantiation of the friend declaration was
3235 recorded on the instantiation list, and is newdecl.
3237 o Later, however, instantiate_class_template called pushdecl
3238 on the newdecl to perform name injection. But, pushdecl in
3239 turn called duplicate_decls when it discovered that another
3240 declaration of a global function with the same name already
3243 o Here, in duplicate_decls, we decided to clobber newdecl.
3245 If we're going to do that, we'd better make sure that
3246 olddecl, and not newdecl, is on the list of
3247 instantiations so that if we try to do the instantiation
3248 again we won't get the clobbered declaration. */
3250 tree tmpl = DECL_TI_TEMPLATE (newdecl);
3251 tree decls = DECL_TEMPLATE_SPECIALIZATIONS (tmpl);
3253 for (; decls; decls = TREE_CHAIN (decls))
3254 if (TREE_VALUE (decls) == newdecl)
3255 TREE_VALUE (decls) = olddecl;
3258 if (((char *)newdecl + ROUND (function_size) == (char *)nl
3259 && ((char *)newdecl + ROUND (function_size)
3260 + ROUND (sizeof (struct lang_decl))
3261 == obstack_next_free (&permanent_obstack)))
3262 || ((char *)newdecl + ROUND (function_size)
3263 == obstack_next_free (&permanent_obstack)))
3265 DECL_MAIN_VARIANT (newdecl) = olddecl;
3266 DECL_LANG_SPECIFIC (olddecl) = ol;
3267 bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl));
3269 obstack_free (&permanent_obstack, newdecl);
3271 else if (LANG_DECL_PERMANENT (ol) && ol != nl)
3273 if (DECL_MAIN_VARIANT (olddecl) == olddecl)
3275 /* Save these lang_decls that would otherwise be lost. */
3276 extern tree free_lang_decl_chain;
3277 tree free_lang_decl = (tree) ol;
3279 if (DECL_LANG_SPECIFIC (olddecl) == ol)
3282 TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
3283 free_lang_decl_chain = free_lang_decl;
3287 /* Storage leak. */;
3293 bcopy ((char *) newdecl + sizeof (struct tree_common),
3294 (char *) olddecl + sizeof (struct tree_common),
3295 sizeof (struct tree_decl) - sizeof (struct tree_common)
3296 + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *));
3299 DECL_UID (olddecl) = olddecl_uid;
3301 DECL_FRIEND_P (olddecl) = 1;
3303 /* NEWDECL contains the merged attribute lists.
3304 Update OLDDECL to be the same. */
3305 DECL_MACHINE_ATTRIBUTES (olddecl) = DECL_MACHINE_ATTRIBUTES (newdecl);
3310 /* Record a decl-node X as belonging to the current lexical scope.
3311 Check for errors (such as an incompatible declaration for the same
3312 name already seen in the same scope).
3314 Returns either X or an old decl for the same name.
3315 If an old decl is returned, it may have been smashed
3316 to agree with what X says. */
3323 register tree name = DECL_ASSEMBLER_NAME (x);
3324 register struct binding_level *b = current_binding_level;
3326 if (current_function_decl && x != current_function_decl
3327 /* A local declaration for a function doesn't constitute nesting. */
3328 && (TREE_CODE (x) != FUNCTION_DECL || DECL_INITIAL (x))
3329 /* Don't change DECL_CONTEXT of virtual methods. */
3330 && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x))
3331 && ! DECL_CONTEXT (x))
3332 DECL_CONTEXT (x) = current_function_decl;
3333 if (!DECL_CONTEXT (x))
3334 DECL_CONTEXT (x) = FROB_CONTEXT (current_namespace);
3336 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3337 compiler wants to use. */
3338 if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL
3339 || TREE_CODE (x) == NAMESPACE_DECL || TREE_CODE (x) == TEMPLATE_TYPE_PARM
3340 || TREE_CODE (x) == TEMPLATE_TEMPLATE_PARM)
3341 name = DECL_NAME (x);
3346 /* Not needed...see below. */
3350 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
3351 name = TREE_OPERAND (name, 0);
3353 /* Namespace-scoped variables are not found in the current level. */
3354 if (TREE_CODE (x) == VAR_DECL && DECL_NAMESPACE_SCOPE_P (x))
3355 t = namespace_binding (name, DECL_CONTEXT (x));
3357 t = lookup_name_current_level (name);
3358 if (t == error_mark_node)
3360 /* error_mark_node is 0 for a while during initialization! */
3362 cp_error_at (ec_used_prior_to_declaration, x);
3365 else if (t != NULL_TREE)
3368 /* This is turned off until I have time to do it right (bpk). */
3369 /* With the code below that uses it... */
3370 file = DECL_SOURCE_FILE (t);
3371 line = DECL_SOURCE_LINE (t);
3373 if (TREE_CODE (t) == PARM_DECL)
3375 if (DECL_CONTEXT (t) == NULL_TREE)
3376 fatal ("parse errors have confused me too much");
3378 /* Check for duplicate params. */
3379 if (duplicate_decls (x, t))
3382 else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c)
3383 || DECL_FUNCTION_TEMPLATE_P (x))
3384 && is_overloaded_fn (t))
3385 /* Don't do anything just yet. */;
3386 else if (t == wchar_decl_node)
3388 if (pedantic && ! DECL_IN_SYSTEM_HEADER (x))
3389 cp_pedwarn (ec_redeclaration_of_wchar_t_as, TREE_TYPE (x));
3391 /* Throw away the redeclaration. */
3394 else if (TREE_CODE (t) != TREE_CODE (x))
3396 if (duplicate_decls (x, t))
3399 else if (duplicate_decls (x, t))
3402 /* This is turned off until I have time to do it right (bpk). */
3404 /* Also warn if they did a prototype with `static' on it, but
3405 then later left the `static' off. */
3406 if (! TREE_PUBLIC (name) && TREE_PUBLIC (x))
3408 if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t))
3413 cp_warning (ec_static_missing_from_declaration_of,
3415 warning_with_file_and_line (file, line,
3416 "previous declaration of `%s'",
3417 decl_as_string (t, 0));
3420 /* Now fix things so it'll do what they expect. */
3421 if (current_function_decl)
3422 TREE_PUBLIC (current_function_decl) = 0;
3424 /* Due to interference in memory reclamation (X may be
3425 obstack-deallocated at this point), we must guard against
3426 one really special case. [jason: This should be handled
3427 by start_function] */
3428 if (current_function_decl == x)
3429 current_function_decl = t;
3431 if (TREE_CODE (t) == TYPE_DECL)
3432 SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t));
3433 else if (TREE_CODE (t) == FUNCTION_DECL)
3434 check_default_args (t);
3438 else if (DECL_MAIN_P (x))
3440 /* A redeclaration of main, but not a duplicate of the
3445 This function shall not be overloaded. */
3446 cp_error_at (ec_invalid_redeclaration_of, t);
3447 cp_error (ec_as, x);
3448 /* We don't try to push this declaration since that
3454 if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x))
3456 t = push_overloaded_decl (x, 1);
3457 if (t != x || DECL_LANGUAGE (x) == lang_c)
3460 else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_NAMESPACE_SCOPE_P (x))
3461 return push_overloaded_decl (x, 0);
3463 /* If declaring a type as a typedef, copy the type (unless we're
3464 at line 0), and install this TYPE_DECL as the new type's typedef
3465 name. See the extensive comment in ../c-decl.c (pushdecl). */
3466 if (TREE_CODE (x) == TYPE_DECL)
3468 tree type = TREE_TYPE (x);
3469 if (DECL_SOURCE_LINE (x) == 0)
3471 if (TYPE_NAME (type) == 0)
3472 TYPE_NAME (type) = x;
3474 else if (type != error_mark_node && TYPE_NAME (type) != x)
3476 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
3478 DECL_ORIGINAL_TYPE (x) = type;
3479 type = build_type_copy (type);
3480 TYPE_STUB_DECL (type) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x));
3481 TYPE_NAME (type) = x;
3482 TREE_TYPE (x) = type;
3487 if (type != error_mark_node
3489 && TYPE_IDENTIFIER (type))
3490 set_identifier_type_value_with_scope (DECL_NAME (x), type, b);
3493 /* Multiple external decls of the same identifier ought to match.
3495 We get warnings about inline functions where they are defined.
3496 We get warnings about other functions from push_overloaded_decl.
3498 Avoid duplicate warnings where they are used. */
3499 if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL)
3503 if (IDENTIFIER_NAMESPACE_VALUE (name) != NULL_TREE
3504 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name))
3505 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name))))
3506 decl = IDENTIFIER_NAMESPACE_VALUE (name);
3511 /* If different sort of thing, we already gave an error. */
3512 && TREE_CODE (decl) == TREE_CODE (x)
3513 && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl), 1))
3515 cp_pedwarn (ec_type_mismatch_with_previous_external_decl, x);
3516 cp_pedwarn_at (ec_previous_external_decl_of, decl);
3520 /* This name is new in its binding level.
3521 Install the new declaration and return it. */
3522 if (namespace_bindings_p ())
3524 /* Install a global value. */
3526 /* If the first global decl has external linkage,
3527 warn if we later see static one. */
3528 if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && TREE_PUBLIC (x))
3529 TREE_PUBLIC (name) = 1;
3531 /* Don't install an artificial TYPE_DECL if we already have
3532 another _DECL with that name. */
3533 if (TREE_CODE (x) != TYPE_DECL
3535 || ! DECL_ARTIFICIAL (x))
3537 if (TREE_CODE (x) == FUNCTION_DECL)
3539 ((IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE)
3540 || (IDENTIFIER_GLOBAL_VALUE (name) == x), 378);
3541 SET_IDENTIFIER_NAMESPACE_VALUE (name, x);
3544 /* Don't forget if the function was used via an implicit decl. */
3545 if (IDENTIFIER_IMPLICIT_DECL (name)
3546 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
3549 /* Don't forget if its address was taken in that way. */
3550 if (IDENTIFIER_IMPLICIT_DECL (name)
3551 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
3552 TREE_ADDRESSABLE (x) = 1;
3554 /* Warn about mismatches against previous implicit decl. */
3555 if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE
3556 /* If this real decl matches the implicit, don't complain. */
3557 && ! (TREE_CODE (x) == FUNCTION_DECL
3558 && TREE_TYPE (TREE_TYPE (x)) == integer_type_node))
3559 cp_warning (ec_was_previously_implicitly_declared_to_return_int, x);
3561 /* If new decl is `static' and an `extern' was seen previously,
3563 if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t))
3564 warn_extern_redeclared_static (x, t);
3568 /* Here to install a non-global value. */
3569 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
3570 tree oldglobal = IDENTIFIER_NAMESPACE_VALUE (name);
3572 /* Don't install an artificial TYPE_DECL if we already have
3573 another _DECL with that name. */
3574 if (TREE_CODE (x) != TYPE_DECL
3576 || ! DECL_ARTIFICIAL (x))
3577 set_identifier_local_value_with_scope (name, x, b);
3579 /* If this is a TYPE_DECL, push it into the type value slot. */
3580 if (TREE_CODE (x) == TYPE_DECL)
3581 set_identifier_type_value_with_scope (name, TREE_TYPE (x), b);
3583 /* Clear out any TYPE_DECL shadowed by a namespace so that
3584 we won't think this is a type. The C struct hack doesn't
3585 go through namespaces. */
3586 if (TREE_CODE (x) == NAMESPACE_DECL)
3587 set_identifier_type_value_with_scope (name, NULL_TREE, b);
3589 /* If this is an extern function declaration, see if we
3590 have a global definition or declaration for the function. */
3591 if (oldlocal == NULL_TREE
3592 && DECL_EXTERNAL (x)
3593 && oldglobal != NULL_TREE
3594 && TREE_CODE (x) == FUNCTION_DECL
3595 && TREE_CODE (oldglobal) == FUNCTION_DECL)
3597 /* We have one. Their types must agree. */
3598 if (decls_match (x, oldglobal))
3602 cp_warning (ec_extern_declaration_of_doesnt_match, x);
3603 cp_warning_at (ec_global_declaration, oldglobal);
3606 /* If we have a local external declaration,
3607 and no file-scope declaration has yet been seen,
3608 then if we later have a file-scope decl it must not be static. */
3609 if (oldlocal == NULL_TREE
3610 && oldglobal == NULL_TREE
3611 && DECL_EXTERNAL (x)
3614 TREE_PUBLIC (name) = 1;
3617 if (DECL_FROM_INLINE (x))
3618 /* Inline decls shadow nothing. */;
3620 /* Warn if shadowing an argument at the top level of the body. */
3621 else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x)
3622 && TREE_CODE (oldlocal) == PARM_DECL
3623 && TREE_CODE (x) != PARM_DECL)
3625 /* Go to where the parms should be and see if we
3627 struct binding_level *b = current_binding_level->level_chain;
3633 if (b->parm_flag == 1)
3634 cp_error (ec_declaration_of_shadows_a_parameter, name);
3636 else if (warn_shadow && oldlocal != NULL_TREE && b->is_for_scope
3637 && !DECL_DEAD_FOR_LOCAL (oldlocal))
3639 cp_warning (ec_variable_s_shadows_local,
3640 IDENTIFIER_POINTER (name));
3641 cp_warning_at (ec_this_is_the_shadowed_declaration, oldlocal);
3643 /* Maybe warn if shadowing something else. */
3644 else if (warn_shadow && !DECL_EXTERNAL (x)
3645 /* No shadow warnings for internally generated vars. */
3646 && ! DECL_ARTIFICIAL (x)
3647 /* No shadow warnings for vars made for inlining. */
3648 && ! DECL_FROM_INLINE (x))
3650 char *warnstring = NULL;
3652 if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL)
3653 warnstring = "declaration of `%s' shadows a parameter";
3654 else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE
3655 && current_class_ptr
3656 && !TREE_STATIC (name))
3657 warnstring = "declaration of `%s' shadows a member of `this'";
3658 else if (oldlocal != NULL_TREE)
3659 warnstring = "declaration of `%s' shadows previous local";
3660 else if (oldglobal != NULL_TREE)
3661 /* XXX shadow warnings in outer-more namespaces */
3662 warnstring = "declaration of `%s' shadows global declaration";
3665 warning (warnstring, IDENTIFIER_POINTER (name));
3667 /* Check to see if decl redeclares a template parameter. */
3668 if (oldlocal && (current_class_type || current_function_decl)
3669 && current_template_parms)
3671 if (decl_template_parm_p (oldlocal))
3673 cp_error (ec_reusing_name_of_template_parameter_in_this_scope, name);
3674 cp_error_at (ec_previously_declared_here, oldlocal);
3679 if (TREE_CODE (x) == FUNCTION_DECL)
3680 check_default_args (x);
3682 /* Keep count of variables in this level with incomplete type. */
3683 if (TREE_CODE (x) == VAR_DECL
3684 && TREE_TYPE (x) != error_mark_node
3685 && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
3686 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE))
3687 /* RTTI TD entries are created while defining the type_info. */
3688 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x))
3689 && TYPE_BEING_DEFINED (TREE_TYPE (x)))))
3690 b->incomplete = tree_cons (NULL_TREE, x, b->incomplete);
3693 /* Put decls on list in reverse order.
3694 We will reverse them later if necessary. */
3695 TREE_CHAIN (x) = b->names;
3697 if (! (b != global_binding_level || TREE_PERMANENT (x)))
3698 my_friendly_abort (124);
3703 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3704 caller to set DECL_CONTEXT properly. */
3707 pushdecl_with_scope (x, level)
3709 struct binding_level *level;
3711 register struct binding_level *b;
3712 tree function_decl = current_function_decl;
3714 current_function_decl = NULL_TREE;
3715 if (level->parm_flag == 2)
3717 b = class_binding_level;
3718 class_binding_level = level;
3719 pushdecl_class_level (x);
3720 class_binding_level = b;
3724 b = current_binding_level;
3725 current_binding_level = level;
3727 current_binding_level = b;
3729 current_function_decl = function_decl;
3733 /* Like pushdecl, only it places X in the current namespace,
3737 pushdecl_namespace_level (x)
3740 register struct binding_level *b = inner_binding_level;
3743 t = pushdecl_with_scope (x, NAMESPACE_LEVEL (current_namespace));
3745 /* Now, the type_shadowed stack may screw us. Munge it so it does
3747 if (TREE_CODE (x) == TYPE_DECL)
3749 tree name = DECL_NAME (x);
3751 tree *ptr = (tree *)0;
3752 for (; b != global_binding_level; b = b->level_chain)
3754 tree shadowed = b->type_shadowed;
3755 for (; shadowed; shadowed = TREE_CHAIN (shadowed))
3756 if (TREE_PURPOSE (shadowed) == name)
3758 ptr = &TREE_VALUE (shadowed);
3759 /* Can't break out of the loop here because sometimes
3760 a binding level will have duplicate bindings for
3761 PT names. It's gross, but I haven't time to fix it. */
3764 newval = TREE_TYPE (x);
3765 if (ptr == (tree *)0)
3767 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3768 up here if this is changed to an assertion. --KR */
3769 SET_IDENTIFIER_TYPE_VALUE (name, newval);
3779 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3783 pushdecl_top_level (x)
3786 tree cur_namespace = current_namespace;
3787 current_namespace = global_namespace;
3788 x = pushdecl_namespace_level (x);
3789 current_namespace = cur_namespace;
3793 /* Make the declaration of X appear in CLASS scope. */
3796 pushdecl_class_level (x)
3799 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3800 scope looks for the pre-mangled name. */
3801 register tree name = DECL_NAME (x);
3805 if (TYPE_BEING_DEFINED (current_class_type))
3807 /* A name N used in a class S shall refer to the same declaration
3808 in its context and when re-evaluated in the completed scope of S.
3809 Types, enums, and static vars are checked here; other
3810 members are checked in finish_struct. */
3811 tree icv = IDENTIFIER_CLASS_VALUE (name);
3812 tree ilv = IDENTIFIER_LOCAL_VALUE (name);
3815 && flag_optional_diags
3816 /* Don't complain about inherited names. */
3817 && id_in_current_class (name)
3818 /* Or shadowed tags. */
3819 && !(DECL_DECLARES_TYPE_P (icv)
3820 && DECL_CONTEXT (icv) == current_class_type))
3822 cp_pedwarn (ec_declaration_of_identifier_as, name, x);
3823 cp_pedwarn_at (ec_conflicts_with_previous_use_in_class_as,
3827 /* Check to see if decl redeclares a template parameter. */
3828 if (ilv && ! decls_match (ilv, x)
3829 && (current_class_type || current_function_decl)
3830 && current_template_parms)
3832 if (decl_template_parm_p (ilv))
3834 cp_error (ec_reusing_name_of_template_parameter_in_this_scope, name);
3835 cp_error_at (ec_previously_declared_here, ilv);
3840 push_class_level_binding (name, x);
3841 if (TREE_CODE (x) == TYPE_DECL)
3843 set_identifier_type_value (name, TREE_TYPE (x));
3850 /* This function is used to push the mangled decls for nested types into
3851 the appropriate scope. Previously pushdecl_top_level was used, but that
3852 is incorrect for members of local classes. */
3855 pushdecl_nonclass_level (x)
3858 struct binding_level *b = current_binding_level;
3860 my_friendly_assert (b->parm_flag != 2, 180);
3863 /* Get out of template binding levels */
3864 while (b->pseudo_global)
3868 pushdecl_with_scope (x, b);
3872 /* Make the declaration(s) of X appear in CLASS scope
3873 under the name NAME. */
3876 push_class_level_binding (name, x)
3880 /* The class_binding_level will be NULL if x is a template
3881 parameter name in a member template. */
3882 if (!class_binding_level)
3885 if (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3886 && purpose_member (name, class_binding_level->class_shadowed))
3889 maybe_push_cache_obstack ();
3890 class_binding_level->class_shadowed
3891 = tree_cons (name, IDENTIFIER_CLASS_VALUE (name),
3892 class_binding_level->class_shadowed);
3894 IDENTIFIER_CLASS_VALUE (name) = x;
3895 obstack_ptr_grow (&decl_obstack, x);
3898 /* Insert another USING_DECL into the current binding level,
3899 returning this declaration. If this is a redeclaration,
3900 do nothing and return NULL_TREE. */
3903 push_using_decl (scope, name)
3909 my_friendly_assert (TREE_CODE (scope) == NAMESPACE_DECL, 383);
3910 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 384);
3911 for (decl = current_binding_level->usings; decl; decl = TREE_CHAIN (decl))
3912 if (DECL_INITIAL (decl) == scope && DECL_NAME (decl) == name)
3916 decl = build_lang_decl (USING_DECL, name, void_type_node);
3917 DECL_INITIAL (decl) = scope;
3918 TREE_CHAIN (decl) = current_binding_level->usings;
3919 current_binding_level->usings = decl;
3923 /* Add namespace to using_directives. Return NULL_TREE if nothing was
3924 changed (i.e. there was already a directive), or the fresh
3925 TREE_LIST otherwise. */
3928 push_using_directive (used)
3931 tree ud = current_binding_level->using_directives;
3932 tree iter, ancestor;
3934 /* Check if we already have this. */
3935 if (purpose_member (used, ud) != NULL_TREE)
3938 /* Recursively add all namespaces used. */
3939 for (iter = DECL_NAMESPACE_USING (used); iter; iter = TREE_CHAIN (iter))
3940 push_using_directive (TREE_PURPOSE (iter));
3942 ancestor = namespace_ancestor (current_decl_namespace (), used);
3943 ud = current_binding_level->using_directives;
3944 ud = perm_tree_cons (used, ancestor, ud);
3945 current_binding_level->using_directives = ud;
3949 /* DECL is a FUNCTION_DECL which may have other definitions already in
3950 place. We get around this by making the value of the identifier point
3951 to a list of all the things that want to be referenced by that name. It
3952 is then up to the users of that name to decide what to do with that
3955 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3956 slot. It is dealt with the same way.
3958 The value returned may be a previous declaration if we guessed wrong
3959 about what language DECL should belong to (C or C++). Otherwise,
3960 it's always DECL (and never something that's not a _DECL). */
3963 push_overloaded_decl (decl, forgettable)
3967 tree orig_name = DECL_NAME (decl);
3969 int doing_global = (namespace_bindings_p () || ! forgettable);
3973 old = namespace_binding (orig_name, DECL_CONTEXT (decl));
3974 if (old && TREE_CODE (old) == FUNCTION_DECL
3975 && DECL_ARTIFICIAL (old)
3976 && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old)))
3978 if (duplicate_decls (decl, old))
3985 old = IDENTIFIER_LOCAL_VALUE (orig_name);
3987 if (! purpose_member (orig_name, current_binding_level->shadowed))
3989 current_binding_level->shadowed
3990 = tree_cons (orig_name, old, current_binding_level->shadowed);
3997 if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old))
3999 tree t = TREE_TYPE (old);
4000 if (IS_AGGR_TYPE (t) && warn_shadow
4001 && (! DECL_IN_SYSTEM_HEADER (decl)
4002 || ! DECL_IN_SYSTEM_HEADER (old)))
4003 cp_warning (ec_hides_constructor_for, decl, t);
4006 else if (is_overloaded_fn (old))
4010 for (tmp = old; tmp; tmp = OVL_NEXT (tmp))
4011 if (decl == OVL_CURRENT (tmp)
4012 || duplicate_decls (decl, OVL_CURRENT (tmp)))
4013 return OVL_CURRENT (tmp);
4017 cp_error_at (ec_previous_nonfunction_declaration, old);
4018 cp_error (ec_conflicts_with_function_declaration, decl);
4023 if (old || TREE_CODE (decl) == TEMPLATE_DECL)
4025 if (old && TREE_CODE (old) != OVERLOAD)
4026 old = ovl_cons (old, NULL_TREE);
4027 old = ovl_cons (decl, old);
4030 /* orig_name is not ambiguous. */
4034 set_namespace_binding (orig_name, current_namespace, old);
4036 IDENTIFIER_LOCAL_VALUE (orig_name) = old;
4041 /* Generate an implicit declaration for identifier FUNCTIONID
4042 as a function of type int (). Print a warning if appropriate. */
4045 implicitly_declare (functionid)
4049 int temp = allocation_temporary_p ();
4051 push_obstacks_nochange ();
4053 /* Save the decl permanently so we can warn if definition follows.
4054 In ANSI C, warn_implicit is usually false, so the saves little space.
4055 But in C++, it's usually true, hence the extra code. */
4056 if (temp && (! warn_implicit || toplevel_bindings_p ()))
4057 end_temporary_allocation ();
4059 /* We used to reuse an old implicit decl here,
4060 but this loses with inline functions because it can clobber
4061 the saved decl chains. */
4062 decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type);
4064 DECL_EXTERNAL (decl) = 1;
4065 TREE_PUBLIC (decl) = 1;
4067 /* ANSI standard says implicit declarations are in the innermost block.
4068 So we record the decl in the standard fashion. */
4070 rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
4073 /* Only one warning per identifier. */
4074 && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE)
4076 cp_pedwarn (ec_implicit_declaration_of_function, decl);
4079 SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl);
4086 /* Return ec_last_error_code if the declaration NEWDECL is valid
4087 when the declaration OLDDECL (assumed to be for the same name)
4088 has already been seen.
4089 Otherwise return an error message format string with a %s
4090 where the identifier should go. */
4093 redeclaration_error_message (newdecl, olddecl)
4094 tree newdecl, olddecl;
4096 if (TREE_CODE (newdecl) == TYPE_DECL)
4098 /* Because C++ can put things into name space for free,
4099 constructs like "typedef struct foo { ... } foo"
4100 would look like an erroneous redeclaration. */
4101 if (comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl), 0))
4102 return ec_last_error_code;
4104 return ec_redefinition_of;
4106 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
4108 /* If this is a pure function, its olddecl will actually be
4109 the original initialization to `0' (which we force to call
4110 abort()). Don't complain about redefinition in this case. */
4111 if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl))
4112 return ec_last_error_code;
4114 /* If both functions come from different namespaces, this is not
4115 a redeclaration - this is a conflict with a used function. */
4116 if (DECL_NAMESPACE_SCOPE_P (olddecl)
4117 && DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl))
4118 return ec_conflicts_with_used_function;
4120 /* We'll complain about linkage mismatches in
4121 warn_extern_redeclared_static. */
4123 /* Defining the same name twice is no good. */
4124 if (DECL_INITIAL (olddecl) != NULL_TREE
4125 && DECL_INITIAL (newdecl) != NULL_TREE)
4127 if (DECL_NAME (olddecl) == NULL_TREE)
4128 return ec_not_declared_in_class;
4130 return ec_redefinition_of;
4132 return ec_last_error_code;
4134 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
4136 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
4137 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl))
4138 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)))
4139 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL
4140 && TYPE_SIZE (TREE_TYPE (newdecl))
4141 && TYPE_SIZE (TREE_TYPE (olddecl))))
4142 return ec_redefinition_of;
4143 return ec_last_error_code;
4145 else if (toplevel_bindings_p ())
4147 /* Objects declared at top level: */
4148 /* If at least one is a reference, it's ok. */
4149 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
4150 return ec_last_error_code;
4151 /* Reject two definitions. */
4152 return ec_redefinition_of;
4156 /* Objects declared with block scope: */
4157 /* Reject two definitions, and reject a definition
4158 together with an external reference. */
4159 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
4160 return ec_redeclaration_of;
4161 return ec_last_error_code;
4165 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4166 Create one if none exists so far for the current function.
4167 This function is called for both label definitions and label references. */
4173 register tree decl = IDENTIFIER_LABEL_VALUE (id);
4175 if (current_function_decl == NULL_TREE)
4177 cp_error (ec_label_s_referenced_outside_of_any_function,
4178 IDENTIFIER_POINTER (id));
4182 if ((decl == NULL_TREE
4183 || DECL_SOURCE_LINE (decl) == 0)
4184 && (named_label_uses == NULL
4185 || named_label_uses->names_in_scope != current_binding_level->names
4186 || named_label_uses->label_decl != decl))
4188 struct named_label_list *new_ent;
4190 = (struct named_label_list*)oballoc (sizeof (struct named_label_list));
4191 new_ent->label_decl = decl;
4192 new_ent->names_in_scope = current_binding_level->names;
4193 new_ent->binding_level = current_binding_level;
4194 new_ent->lineno_o_goto = lineno;
4195 new_ent->filename_o_goto = input_filename;
4196 new_ent->next = named_label_uses;
4197 named_label_uses = new_ent;
4200 /* Use a label already defined or ref'd with this name. */
4201 if (decl != NULL_TREE)
4203 /* But not if it is inherited and wasn't declared to be inheritable. */
4204 if (DECL_CONTEXT (decl) != current_function_decl
4205 && ! C_DECLARED_LABEL_FLAG (decl))
4206 return shadow_label (id);
4210 decl = build_decl (LABEL_DECL, id, void_type_node);
4212 /* Make sure every label has an rtx. */
4215 /* A label not explicitly declared must be local to where it's ref'd. */
4216 DECL_CONTEXT (decl) = current_function_decl;
4218 DECL_MODE (decl) = VOIDmode;
4220 /* Say where one reference is to the label,
4221 for the sake of the error if it is not defined. */
4222 DECL_SOURCE_LINE (decl) = lineno;
4223 DECL_SOURCE_FILE (decl) = input_filename;
4225 SET_IDENTIFIER_LABEL_VALUE (id, decl);
4227 named_labels = tree_cons (NULL_TREE, decl, named_labels);
4228 named_label_uses->label_decl = decl;
4233 /* Make a label named NAME in the current function,
4234 shadowing silently any that may be inherited from containing functions
4235 or containing scopes.
4237 Note that valid use, if the label being shadowed
4238 comes from another scope in the same function,
4239 requires calling declare_nonlocal_label right away. */
4245 register tree decl = IDENTIFIER_LABEL_VALUE (name);
4247 if (decl != NULL_TREE)
4249 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
4250 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
4253 return lookup_label (name);
4256 /* Define a label, specifying the location in the source file.
4257 Return the LABEL_DECL node for the label, if the definition is valid.
4258 Otherwise return 0. */
4261 define_label (filename, line, name)
4268 if (minimal_parse_mode)
4270 push_obstacks (&permanent_obstack, &permanent_obstack);
4271 decl = build_decl (LABEL_DECL, name, void_type_node);
4273 DECL_SOURCE_LINE (decl) = line;
4274 DECL_SOURCE_FILE (decl) = filename;
4279 decl = lookup_label (name);
4281 /* After labels, make any new cleanups go into their
4282 own new (temporary) binding contour. */
4283 current_binding_level->more_cleanups_ok = 0;
4285 /* If label with this name is known from an outer context, shadow it. */
4286 if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl)
4288 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
4289 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
4290 decl = lookup_label (name);
4293 if (name == get_identifier ("wchar_t"))
4294 cp_pedwarn (ec_label_named_wchar_t);
4296 if (DECL_INITIAL (decl) != NULL_TREE)
4298 cp_error (ec_duplicate_label, decl);
4303 struct named_label_list *uses, *prev;
4306 /* Mark label as having been defined. */
4307 DECL_INITIAL (decl) = error_mark_node;
4308 /* Say where in the source. */
4309 DECL_SOURCE_FILE (decl) = filename;
4310 DECL_SOURCE_LINE (decl) = line;
4313 uses = named_label_uses;
4314 while (uses != NULL)
4315 if (uses->label_decl == decl)
4317 struct binding_level *b = current_binding_level;
4320 tree new_decls = b->names;
4321 tree old_decls = (b == uses->binding_level)
4322 ? uses->names_in_scope : NULL_TREE;
4323 while (new_decls != old_decls)
4325 if (TREE_CODE (new_decls) == VAR_DECL
4326 /* Don't complain about crossing initialization
4327 of internal entities. They can't be accessed,
4328 and they should be cleaned up
4329 by the time we get to the label. */
4330 && ! DECL_ARTIFICIAL (new_decls)
4331 && ((DECL_INITIAL (new_decls) != NULL_TREE
4332 && DECL_INITIAL (new_decls) != error_mark_node)
4333 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
4337 cp_error (ec_jump_to_label, decl);
4338 error_with_file_and_line (uses->filename_o_goto,
4339 uses->lineno_o_goto,
4343 cp_error_at (ec_crosses_initialization_of,
4346 new_decls = TREE_CHAIN (new_decls);
4348 if (b == uses->binding_level)
4354 prev->next = uses->next;
4356 named_label_uses = uses->next;
4365 current_function_return_value = NULL_TREE;
4372 struct binding_level *level;
4373 struct cp_switch *next;
4376 static struct cp_switch *switch_stack;
4382 = (struct cp_switch *) oballoc (sizeof (struct cp_switch));
4383 p->level = current_binding_level;
4384 p->next = switch_stack;
4391 switch_stack = switch_stack->next;
4394 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4395 /* XXX Note decl is never actually used. (bpk) */
4398 define_case_label (decl)
4401 tree cleanup = last_cleanup_this_contour ();
4402 struct binding_level *b = current_binding_level;
4407 static int explained = 0;
4408 cp_warning_at (ec_destructor_needed_for, TREE_PURPOSE (cleanup));
4409 cp_warning (ec_where_case_label_appears_here);
4412 cp_warning (ec_enclose_actions_of_previous_case_statements_requiring);
4413 cp_warning (ec_destructors_in_their_own_binding_contours);
4418 for (; b && b != switch_stack->level; b = b->level_chain)
4420 tree new_decls = b->names;
4421 for (; new_decls; new_decls = TREE_CHAIN (new_decls))
4423 if (TREE_CODE (new_decls) == VAR_DECL
4424 /* Don't complain about crossing initialization
4425 of internal entities. They can't be accessed,
4426 and they should be cleaned up
4427 by the time we get to the label. */
4428 && ! DECL_ARTIFICIAL (new_decls)
4429 && ((DECL_INITIAL (new_decls) != NULL_TREE
4430 && DECL_INITIAL (new_decls) != error_mark_node)
4431 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
4434 cp_error (ec_jump_to_case_label);
4436 cp_error_at (ec_crosses_initialization_of,
4442 /* After labels, make any new cleanups go into their
4443 own new (temporary) binding contour. */
4445 current_binding_level->more_cleanups_ok = 0;
4446 current_function_return_value = NULL_TREE;
4449 /* Return the list of declarations of the current level.
4450 Note that this list is in reverse order unless/until
4451 you nreverse it; and when you do nreverse it, you must
4452 store the result back using `storedecls' or you will lose. */
4457 return current_binding_level->names;
4460 /* Return the list of type-tags (for structs, etc) of the current level. */
4465 return current_binding_level->tags;
4468 /* Store the list of declarations of the current level.
4469 This is done for the parameter declarations of a function being defined,
4470 after they are modified in the light of any missing parameters. */
4476 current_binding_level->names = decls;
4479 /* Similarly, store the list of tags of the current level. */
4485 current_binding_level->tags = tags;
4488 /* Given NAME, an IDENTIFIER_NODE,
4489 return the structure (or union or enum) definition for that name.
4490 Searches binding levels from BINDING_LEVEL up to the global level.
4491 If THISLEVEL_ONLY is nonzero, searches only the specified context
4492 (but skips any tag-transparent contexts to find one that is
4493 meaningful for tags).
4494 FORM says which kind of type the caller wants;
4495 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4496 If the wrong kind of type is found, and it's not a template, an error is
4500 lookup_tag (form, name, binding_level, thislevel_only)
4501 enum tree_code form;
4503 struct binding_level *binding_level;
4506 register struct binding_level *level;
4507 /* Non-zero if, we should look past a pseudo-global level, even if
4509 int allow_pseudo_global = 1;
4511 for (level = binding_level; level; level = level->level_chain)
4514 if (ANON_AGGRNAME_P (name))
4515 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4517 /* There's no need for error checking here, because
4518 anon names are unique throughout the compilation. */
4519 if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name)
4520 return TREE_VALUE (tail);
4522 else if (level->namespace_p)
4523 /* Do namespace lookup. */
4524 for (tail = current_namespace; 1; tail = CP_DECL_CONTEXT (tail))
4526 tree old = binding_for_name (name, tail);
4528 /* If we just skipped past a pseudo global level, even
4529 though THISLEVEL_ONLY, and we find a template class
4530 declaration, then we use the _TYPE node for the
4531 template. See the example below. */
4532 if (thislevel_only && !allow_pseudo_global
4533 && old && BINDING_VALUE (old)
4534 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old)))
4535 old = TREE_TYPE (BINDING_VALUE (old));
4537 old = BINDING_TYPE (old);
4539 /* If it has an original type, it is a typedef, and we
4540 should not return it. */
4541 if (old && DECL_ORIGINAL_TYPE (TYPE_NAME (old)))
4543 if (old && TREE_CODE (old) != form
4544 && !(form != ENUMERAL_TYPE && TREE_CODE (old) == TEMPLATE_DECL))
4546 cp_error (ec_redeclared_as, old, form);
4551 if (thislevel_only || tail == global_namespace)
4555 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4557 if (TREE_PURPOSE (tail) == name)
4559 enum tree_code code = TREE_CODE (TREE_VALUE (tail));
4560 /* Should tighten this up; it'll probably permit
4561 UNION_TYPE and a struct template, for example. */
4563 && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL))
4565 /* Definition isn't the kind we were looking for. */
4566 cp_error (ec_redeclared_as, TREE_VALUE (tail),
4570 return TREE_VALUE (tail);
4573 if (thislevel_only && ! level->tag_transparent)
4575 if (level->pseudo_global && allow_pseudo_global)
4577 /* We must deal with cases like this:
4579 template <class T> struct S;
4580 template <class T> struct S {};
4582 When looking up `S', for the second declaration, we
4583 would like to find the first declaration. But, we
4584 are in the pseudo-global level created for the
4585 template parameters, rather than the (surrounding)
4586 namespace level. Thus, we keep going one more level,
4587 even though THISLEVEL_ONLY is non-zero. */
4588 allow_pseudo_global = 0;
4594 if (current_class_type && level->level_chain->namespace_p)
4596 /* Try looking in this class's tags before heading into
4597 global binding level. */
4598 tree context = current_class_type;
4601 switch (TREE_CODE_CLASS (TREE_CODE (context)))
4605 these_tags = CLASSTYPE_TAGS (context);
4606 if (ANON_AGGRNAME_P (name))
4609 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags))
4611 return TREE_VALUE (tail);
4612 these_tags = TREE_CHAIN (these_tags);
4617 if (TREE_PURPOSE (these_tags) == name)
4619 if (TREE_CODE (TREE_VALUE (these_tags)) != form)
4621 cp_error (ec_redeclared_as_in_class_scope,
4622 TREE_VALUE (tail), form);
4625 return TREE_VALUE (tail);
4627 these_tags = TREE_CHAIN (these_tags);
4629 /* If this type is not yet complete, then don't
4630 look at its context. */
4631 if (TYPE_SIZE (context) == NULL_TREE)
4633 /* Go to next enclosing type, if any. */
4634 context = DECL_CONTEXT (TYPE_MAIN_DECL (context));
4637 context = DECL_CONTEXT (context);
4640 my_friendly_abort (10);
4653 set_current_level_tags_transparency (tags_transparent)
4654 int tags_transparent;
4656 current_binding_level->tag_transparent = tags_transparent;
4660 /* Given a type, find the tag that was defined for it and return the tag name.
4661 Otherwise return 0. However, the value can never be 0
4662 in the cases in which this is used.
4664 C++: If NAME is non-zero, this is the new name to install. This is
4665 done when replacing anonymous tags with real tag names. */
4668 lookup_tag_reverse (type, name)
4672 register struct binding_level *level;
4674 for (level = current_binding_level; level; level = level->level_chain)
4677 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4679 if (TREE_VALUE (tail) == type)
4682 TREE_PURPOSE (tail) = name;
4683 return TREE_PURPOSE (tail);
4690 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4691 Return the type value, or NULL_TREE if not found. */
4694 lookup_nested_type (type, context)
4698 if (context == NULL_TREE)
4702 switch (TREE_CODE (context))
4706 tree ctype = TREE_TYPE (context);
4707 tree match = value_member (type, CLASSTYPE_TAGS (ctype));
4709 return TREE_VALUE (match);
4710 context = DECL_CONTEXT (context);
4712 /* When we have a nested class whose member functions have
4713 local types (e.g., a set of enums), we'll arrive here
4714 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4715 the enclosing class. Instead, we want to make sure we
4716 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4717 if (context && TREE_CODE (context) == RECORD_TYPE)
4718 context = TREE_CHAIN (context);
4722 if (TYPE_NAME (type) && TYPE_IDENTIFIER (type))
4723 return lookup_name (TYPE_IDENTIFIER (type), 1);
4726 my_friendly_abort (12);
4732 /* Look up NAME in the NAMESPACE. */
4735 lookup_namespace_name (namespace, name)
4736 tree namespace, name;
4738 struct tree_binding _b;
4741 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370);
4742 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373);
4744 val = binding_init (&_b);
4745 if (!qualified_lookup_using_namespace (name, namespace, val, 0))
4746 return error_mark_node;
4748 if (BINDING_VALUE (val))
4750 val = BINDING_VALUE (val);
4752 /* If we have a single function from a using decl, pull it out. */
4753 if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
4754 val = OVL_FUNCTION (val);
4758 cp_error (ec_undeclared_in_namespace, name, namespace);
4759 return error_mark_node;
4763 make_typename_type (context, name)
4769 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
4770 name = TYPE_IDENTIFIER (name);
4771 else if (TREE_CODE (name) == TYPE_DECL)
4772 name = DECL_NAME (name);
4776 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
4778 name = TREE_OPERAND (name, 0);
4779 if (TREE_CODE (name) == TEMPLATE_DECL)
4780 name = TREE_OPERAND (fullname, 0) = DECL_NAME (name);
4782 if (TREE_CODE (name) != IDENTIFIER_NODE)
4783 my_friendly_abort (2000);
4785 if (! uses_template_parms (context)
4786 || currently_open_class (context))
4788 if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR)
4790 if (IS_AGGR_TYPE (context))
4791 t = lookup_field (context, name, 0, 0);
4795 if (t == NULL_TREE || TREE_CODE (t) != TEMPLATE_DECL
4796 || TREE_CODE (DECL_RESULT (t)) != TYPE_DECL)
4798 cp_error (ec_no_class_template_named_in,
4800 return error_mark_node;
4803 return lookup_template_class (t, TREE_OPERAND (fullname, 1),
4805 /*entering_scope=*/0);
4809 if (IS_AGGR_TYPE (context))
4810 t = lookup_field (context, name, 0, 1);
4816 cp_error (ec_no_type_named_in, name, context);
4817 return error_mark_node;
4820 return TREE_TYPE (t);
4824 if (processing_template_decl)
4825 push_obstacks (&permanent_obstack, &permanent_obstack);
4826 t = make_lang_type (TYPENAME_TYPE);
4827 TYPENAME_TYPE_FULLNAME (t) = fullname;
4828 d = build_decl (TYPE_DECL, name, t);
4829 if (processing_template_decl)
4832 TYPE_CONTEXT (t) = FROB_CONTEXT (context);
4833 TYPE_NAME (TREE_TYPE (d)) = d;
4834 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
4835 DECL_CONTEXT (d) = FROB_CONTEXT (context);
4836 CLASSTYPE_GOT_SEMICOLON (t) = 1;
4841 /* Select the right _DECL from multiple choices. */
4844 select_decl (binding, flags)
4849 val = BINDING_VALUE (binding);
4850 if (LOOKUP_NAMESPACES_ONLY (flags))
4852 /* We are not interested in types. */
4853 if (val && TREE_CODE (val) == NAMESPACE_DECL)
4858 /* If we could have a type and
4859 we have nothing or we need a type and have none. */
4860 if (BINDING_TYPE (binding)
4861 && (!val || ((flags & LOOKUP_PREFER_TYPES)
4862 && TREE_CODE (val) != TYPE_DECL)))
4863 val = TYPE_STUB_DECL (BINDING_TYPE (binding));
4864 /* Don't return non-types if we really prefer types. */
4865 else if (val && LOOKUP_TYPES_ONLY (flags) && TREE_CODE (val) != TYPE_DECL
4866 && (!looking_for_template || TREE_CODE (val) != TEMPLATE_DECL))
4872 /* Unscoped lookup of a global, iterate over namespaces, considering
4873 using namespace statements. */
4876 unqualified_namespace_lookup (name, flags)
4880 struct tree_binding _binding;
4881 tree b = binding_init (&_binding);
4882 tree initial = current_decl_namespace();
4883 tree scope = initial;
4885 struct binding_level *level;
4886 tree val = NULL_TREE;
4890 val = binding_for_name (name, scope);
4892 /* Initialize binding for this context. */
4893 BINDING_VALUE (b) = BINDING_VALUE (val);
4894 BINDING_TYPE (b) = BINDING_TYPE (val);
4896 /* Add all _DECLs seen through local using-directives. */
4897 for (level = current_binding_level;
4898 !level->namespace_p;
4899 level = level->level_chain)
4900 if (!lookup_using_namespace (name, b, level->using_directives,
4902 /* Give up because of error. */
4905 /* Add all _DECLs seen through global using-directives. */
4906 /* XXX local and global using lists should work equally. */
4910 if (!lookup_using_namespace (name, b, DECL_NAMESPACE_USING (siter),
4912 /* Give up because of error. */
4914 if (siter == scope) break;
4915 siter = CP_DECL_CONTEXT (siter);
4918 val = select_decl (b, flags);
4919 if (scope == global_namespace)
4921 scope = CP_DECL_CONTEXT (scope);
4926 /* Combine prefer_type and namespaces_only into flags. */
4929 lookup_flags (prefer_type, namespaces_only)
4930 int prefer_type, namespaces_only;
4932 if (namespaces_only)
4933 return LOOKUP_PREFER_NAMESPACES;
4934 if (prefer_type > 1)
4935 return LOOKUP_PREFER_TYPES;
4936 if (prefer_type > 0)
4937 return LOOKUP_PREFER_BOTH;
4941 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
4942 ignore it or not. Subroutine of lookup_name_real. */
4945 qualify_lookup (val, flags)
4949 if (val == NULL_TREE)
4951 if ((flags & LOOKUP_PREFER_NAMESPACES) && TREE_CODE (val) == NAMESPACE_DECL)
4953 if ((flags & LOOKUP_PREFER_TYPES)
4954 && (TREE_CODE (val) == TYPE_DECL
4955 || ((flags & LOOKUP_TEMPLATES_EXPECTED)
4956 && DECL_CLASS_TEMPLATE_P (val))))
4958 if (flags & (LOOKUP_PREFER_NAMESPACES | LOOKUP_PREFER_TYPES))
4963 /* Look up NAME in the current binding level and its superiors in the
4964 namespace of variables, functions and typedefs. Return a ..._DECL
4965 node of some kind representing its definition if there is only one
4966 such declaration, or return a TREE_LIST with all the overloaded
4967 definitions if there are many, or return 0 if it is undefined.
4969 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
4970 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
4971 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4972 Otherwise we prefer non-TYPE_DECLs.
4974 If NONCLASS is non-zero, we don't look for the NAME in class scope,
4975 using IDENTIFIER_CLASS_VALUE. */
4978 lookup_name_real (name, prefer_type, nonclass, namespaces_only)
4980 int prefer_type, nonclass, namespaces_only;
4984 tree from_obj = NULL_TREE;
4985 tree locval, classval;
4988 /* Hack: copy flag set by parser, if set. */
4989 if (only_namespace_names)
4990 namespaces_only = 1;
4992 if (prefer_type == -2)
4994 extern int looking_for_typename;
4995 tree type = NULL_TREE;
4998 prefer_type = looking_for_typename;
5000 flags = lookup_flags (prefer_type, namespaces_only);
5001 /* During parsing, we need to complain. */
5002 flags |= LOOKUP_COMPLAIN;
5003 /* If the next thing is '<', class templates are types. */
5004 if (looking_for_template)
5005 flags |= LOOKUP_TEMPLATES_EXPECTED;
5007 /* std:: becomes :: for now. */
5008 if (got_scope == std_node)
5009 got_scope = void_type_node;
5013 else if (got_object != error_mark_node)
5018 if (type == error_mark_node)
5019 return error_mark_node;
5020 if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type))
5021 type = TREE_TYPE (type);
5024 type = complete_type (type);
5026 if (TREE_CODE (type) == VOID_TYPE)
5027 type = global_namespace;
5028 if (TREE_CODE (type) == NAMESPACE_DECL)
5030 struct tree_binding b;
5031 val = binding_init (&b);
5032 if (!qualified_lookup_using_namespace (name, type, val, flags))
5034 val = select_decl (val, flags);
5036 else if (! IS_AGGR_TYPE (type)
5037 || TREE_CODE (type) == TEMPLATE_TYPE_PARM
5038 || TREE_CODE (type) == TEMPLATE_TEMPLATE_PARM
5039 || TREE_CODE (type) == TYPENAME_TYPE)
5040 /* Someone else will give an error about this if needed. */
5042 else if (TYPE_BEING_DEFINED (type))
5044 val = IDENTIFIER_CLASS_VALUE (name);
5045 if (val && DECL_CONTEXT (val) != type)
5047 struct binding_level *b = class_binding_level;
5048 for (val = NULL_TREE; b; b = b->level_chain)
5050 tree t = purpose_member (name, b->class_shadowed);
5051 if (t && TREE_VALUE (t)
5052 && DECL_CONTEXT (TREE_VALUE (t)) == type)
5054 val = TREE_VALUE (t);
5059 if (val == NULL_TREE)
5060 val = lookup_field (type, name, 0, 1);
5062 else if (type == current_class_type)
5063 val = IDENTIFIER_CLASS_VALUE (name);
5065 val = lookup_member (type, name, 0, prefer_type);
5072 else if (got_object && val)
5076 flags = lookup_flags (prefer_type, namespaces_only);
5078 locval = classval = NULL_TREE;
5080 if (! namespace_bindings_p ())
5081 locval = qualify_lookup (IDENTIFIER_LOCAL_VALUE (name), flags);
5083 /* In C++ class fields are between local and global scope,
5084 just before the global scope. */
5085 if (current_class_type && ! nonclass)
5087 classval = IDENTIFIER_CLASS_VALUE (name);
5088 if (classval == NULL_TREE && TYPE_BEING_DEFINED (current_class_type))
5089 /* Try to find values from base classes if we are presently
5090 defining a type. We are presently only interested in
5092 classval = lookup_field (current_class_type, name, 0, 1);
5094 /* Add implicit 'typename' to types from template bases. lookup_field
5095 will do this for us. If classval is actually from an enclosing
5096 scope, lookup_nested_field will get it for us. */
5097 else if (processing_template_decl
5098 && classval && TREE_CODE (classval) == TYPE_DECL
5099 && ! currently_open_class (DECL_CONTEXT (classval))
5100 && uses_template_parms (current_class_type))
5101 classval = lookup_field (current_class_type, name, 0, 1);
5103 /* yylex() calls this with -2, since we should never start digging for
5104 the nested name at the point where we haven't even, for example,
5105 created the COMPONENT_REF or anything like that. */
5106 if (classval == NULL_TREE)
5107 classval = lookup_nested_field (name, ! yylex);
5109 classval = qualify_lookup (classval, flags);
5112 if (locval && classval)
5114 if (current_scope () == current_function_decl
5115 && ! hack_decl_function_context (current_function_decl))
5116 /* Not in a nested function. */
5120 /* This is incredibly horrible. The whole concept of
5121 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
5122 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
5124 tree lctx = hack_decl_function_context (locval);
5125 tree cctx = hack_decl_function_context (classval);
5127 if (lctx == current_scope ())
5129 else if (lctx == cctx)
5132 /* I don't know which is right; let's just guess for now. */
5141 val = unqualified_namespace_lookup (name, flags);
5143 if (classval && TREE_CODE (val) == TYPE_DECL
5144 && TREE_CODE (TREE_TYPE (val)) == TYPENAME_TYPE
5145 && TREE_TYPE (TREE_TYPE (val)))
5147 tree nsval = unqualified_namespace_lookup (name, flags);
5149 if (val && nsval && TREE_CODE (nsval) == TYPE_DECL)
5151 static int explained;
5152 cp_warning (ec_namespacescope_type, nsval);
5153 cp_warning (ec_used_instead_of_decl_from_base, val);
5157 cp_warning (ec_use_typename_if_thats_what_you_meant,
5167 /* This should only warn about types used in qualified-ids. */
5168 if (from_obj && from_obj != val)
5170 if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL
5171 && TREE_CODE (val) == TYPE_DECL
5172 && TREE_TYPE (from_obj) != TREE_TYPE (val))
5174 cp_pedwarn (ec_lookup_of_in_the_scope_of,
5175 name, got_object, TREE_TYPE (from_obj));
5176 cp_pedwarn (ec_does_not_match_lookup_in_the_current_scope,
5180 /* We don't change val to from_obj if got_object depends on
5181 template parms because that breaks implicit typename for
5182 destructor calls. */
5183 if (! uses_template_parms (got_object))
5187 if ((TREE_CODE (val) == TEMPLATE_DECL && looking_for_template)
5188 || TREE_CODE (val) == TYPE_DECL || prefer_type <= 0)
5190 /* Caller wants a class-or-namespace-name. */
5191 else if (prefer_type == 1 && TREE_CODE (val) == NAMESPACE_DECL)
5193 else if (IDENTIFIER_HAS_TYPE_VALUE (name))
5194 val = TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name));
5195 else if (TREE_TYPE (val) == error_mark_node)
5196 val = error_mark_node;
5198 /* If we have a single function from a using decl, pull it out. */
5199 if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
5200 val = OVL_FUNCTION (val);
5209 lookup_name_nonclass (name)
5212 return lookup_name_real (name, 0, 1, 0);
5216 lookup_function_nonclass (name, args)
5220 return lookup_arg_dependent (name, lookup_name_nonclass (name), args);
5224 lookup_name_namespace_only (name)
5227 /* type-or-namespace, nonclass, namespace_only */
5228 return lookup_name_real (name, 1, 1, 1);
5232 lookup_name (name, prefer_type)
5236 return lookup_name_real (name, prefer_type, 0, 0);
5239 /* Similar to `lookup_name' but look only at current binding level. */
5242 lookup_name_current_level (name)
5245 register tree t = NULL_TREE;
5247 if (current_binding_level->namespace_p)
5249 t = IDENTIFIER_NAMESPACE_VALUE (name);
5251 /* extern "C" function() */
5252 if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
5255 else if (IDENTIFIER_LOCAL_VALUE (name) != NULL_TREE)
5257 struct binding_level *b = current_binding_level;
5260 if (purpose_member (name, b->shadowed))
5261 return IDENTIFIER_LOCAL_VALUE (name);
5272 /* Like lookup_name_current_level, but for types. */
5275 lookup_type_current_level (name)
5278 register tree t = NULL_TREE;
5280 my_friendly_assert (! current_binding_level->namespace_p, 980716);
5282 if (REAL_IDENTIFIER_TYPE_VALUE (name) != NULL_TREE
5283 && REAL_IDENTIFIER_TYPE_VALUE (name) != global_type_node)
5285 struct binding_level *b = current_binding_level;
5288 if (purpose_member (name, b->type_shadowed))
5289 return REAL_IDENTIFIER_TYPE_VALUE (name);
5301 begin_only_namespace_names ()
5303 only_namespace_names = 1;
5307 end_only_namespace_names ()
5309 only_namespace_names = 0;
5312 /* Arrange for the user to get a source line number, even when the
5313 compiler is going down in flames, so that she at least has a
5314 chance of working around problems in the compiler. We used to
5315 call error(), but that let the segmentation fault continue
5316 through; now, it's much more passive by asking them to send the
5317 maintainers mail about the problem. */
5321 int sig ATTRIBUTE_UNUSED;
5323 signal (SIGSEGV, SIG_DFL);
5325 signal (SIGIOT, SIG_DFL);
5328 signal (SIGILL, SIG_DFL);
5331 signal (SIGABRT, SIG_DFL);
5334 signal (SIGBUS, SIG_DFL);
5336 my_friendly_abort (0);
5340 /* Unused -- brendan 970107 */
5341 /* Array for holding types considered "built-in". These types
5342 are output in the module in which `main' is defined. */
5343 static tree *builtin_type_tdescs_arr;
5344 static int builtin_type_tdescs_len, builtin_type_tdescs_max;
5347 /* Push the declarations of builtin types into the namespace.
5348 RID_INDEX, if < RID_MAX is the index of the builtin type
5349 in the array RID_POINTERS. NAME is the name used when looking
5350 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5353 record_builtin_type (rid_index, name, type)
5358 tree rname = NULL_TREE, tname = NULL_TREE;
5359 tree tdecl = NULL_TREE;
5361 if ((int) rid_index < (int) RID_MAX)
5362 rname = ridpointers[(int) rid_index];
5364 tname = get_identifier (name);
5366 TYPE_BUILT_IN (type) = 1;
5370 tdecl = pushdecl (build_decl (TYPE_DECL, tname, type));
5371 set_identifier_type_value (tname, NULL_TREE);
5372 if ((int) rid_index < (int) RID_MAX)
5373 /* Built-in types live in the global namespace. */
5374 SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl);
5376 if (rname != NULL_TREE)
5378 if (tname != NULL_TREE)
5380 set_identifier_type_value (rname, NULL_TREE);
5381 SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl);
5385 tdecl = pushdecl (build_decl (TYPE_DECL, rname, type));
5386 set_identifier_type_value (rname, NULL_TREE);
5391 /* Record one of the standard Java types.
5392 * Declare it as having the given NAME.
5393 * If SIZE > 0, it is the size of one of the integral types;
5394 * otherwise it is the negative of the size of one of the other types. */
5397 record_builtin_java_type (name, size)
5403 type = make_signed_type (size);
5404 else if (size > -32)
5405 { /* "__java_char" or ""__java_boolean". */
5406 type = make_unsigned_type (-size);
5407 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5410 { /* "__java_float" or ""__java_double". */
5411 type = make_node (REAL_TYPE);
5412 TYPE_PRECISION (type) = - size;
5415 record_builtin_type (RID_MAX, name, type);
5416 decl = TYPE_NAME (type);
5417 DECL_IGNORED_P (decl) = 1;
5418 TYPE_FOR_JAVA (type) = 1;
5422 /* Push a type into the namespace so that the back-ends ignore it. */
5425 record_unknown_type (type, name)
5429 tree decl = pushdecl (build_decl (TYPE_DECL, get_identifier (name), type));
5430 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5431 DECL_IGNORED_P (decl) = 1;
5432 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
5433 TYPE_SIZE (type) = TYPE_SIZE (void_type_node);
5434 TYPE_ALIGN (type) = 1;
5435 TYPE_MODE (type) = TYPE_MODE (void_type_node);
5438 /* Push overloaded decl, in global scope, with one argument so it
5439 can be used as a callback from define_function. */
5442 push_overloaded_decl_1 (x)
5445 push_overloaded_decl (x, 0);
5452 auto_function (name, type, code)
5454 enum built_in_function code;
5456 return define_function
5457 (IDENTIFIER_POINTER (name), type, code, push_overloaded_decl_1,
5458 IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type),
5462 /* Create the predefined scalar types of C,
5463 and some nodes representing standard constants (0, 1, (void *)0).
5464 Initialize the global binding level.
5465 Make definitions for built-in primitive functions. */
5468 init_decl_processing ()
5470 register tree endlink, int_endlink, double_endlink, unsigned_endlink;
5472 /* Data type of memcpy. */
5473 tree memcpy_ftype, strlen_ftype;
5474 int wchar_type_size;
5476 tree array_domain_type;
5477 tree vb_off_identifier = NULL_TREE;
5478 /* Function type `char *(char *, char *)' and similar ones */
5479 tree string_ftype_ptr_ptr, int_ftype_string_string;
5480 tree sizetype_endlink;
5481 tree ptr_ftype, ptr_ftype_unsigned, ptr_ftype_sizetype;
5482 tree void_ftype, void_ftype_int, void_ftype_ptr, ptr_ftype_void;
5484 /* Have to make these distinct before we try using them. */
5485 lang_name_cplusplus = get_identifier ("C++");
5486 lang_name_c = get_identifier ("C");
5487 lang_name_java = get_identifier ("Java");
5489 /* Enter the global namespace. */
5490 my_friendly_assert (global_namespace == NULL_TREE, 375);
5491 my_friendly_assert (current_lang_name == NULL_TREE, 375);
5492 current_lang_name = lang_name_cplusplus;
5493 push_namespace (get_identifier ("::"));
5494 global_namespace = current_namespace;
5495 current_lang_name = NULL_TREE;
5497 if (flag_strict_prototype == 2)
5498 flag_strict_prototype = pedantic;
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 cp_error (ec_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 (ec_can_only_be_specified_for_functions, ob_modifier);
6371 else if (ob_modifier == ridpointers[(int) RID_EXPLICIT])
6372 cp_error (ec_can_only_be_specified_for_constructors,
6375 cp_error (ec_can_only_be_specified_for_objects_and_functions,
6380 cp_error (ec_abstract_declarator_used_as_declaration);
6381 else if (found_tag > 1)
6382 cp_pedwarn (ec_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 (ec_typedef_is_initialized, decl);
6505 cp_error (ec_function_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)))
6517 cp_error (ec_variablesized_object_may_not_be_initialized,
6522 if (TREE_CODE (type) == ARRAY_TYPE
6523 && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
6525 cp_error (ec_elements_of_array_have_incomplete_type, decl);
6534 if (! toplevel_bindings_p ()
6535 && DECL_EXTERNAL (decl))
6536 cp_warning (ec_declaration_of_has_extern_and_is_initialized,
6538 DECL_EXTERNAL (decl) = 0;
6539 if (toplevel_bindings_p ())
6540 TREE_STATIC (decl) = 1;
6542 /* Tell `pushdecl' this is an initialized decl
6543 even though we don't yet have the initializer expression.
6544 Also tell `cp_finish_decl' it may store the real initializer. */
6545 DECL_INITIAL (decl) = error_mark_node;
6548 if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE)
6550 if (TREE_CODE (decl) == VAR_DECL)
6552 tree field = lookup_field (context, DECL_NAME (decl), 0, 0);
6553 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
6554 cp_error (ec_is_not_a_static_member_of, decl, context);
6557 if (DECL_CONTEXT (field) != context)
6559 cp_pedwarn (ec_does_not_permit_to_be_defined_as,
6560 DECL_CONTEXT (field), DECL_NAME (decl),
6561 context, DECL_NAME (decl));
6562 DECL_CONTEXT (decl) = DECL_CONTEXT (field);
6564 /* Static data member are tricky; an in-class initialization
6565 still doesn't provide a definition, so the in-class
6566 declaration will have DECL_EXTERNAL set, but will have an
6567 initialization. Thus, duplicate_decls won't warn
6568 about this situation, and so we check here. */
6569 if (DECL_INITIAL (decl) && DECL_INITIAL (field))
6570 cp_error (ec_duplicate_initialization_of, decl);
6571 if (duplicate_decls (decl, field))
6577 tree field = check_classfn (context, decl);
6578 if (field && duplicate_decls (decl, field))
6582 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6583 DECL_IN_AGGR_P (decl) = 0;
6584 if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
6585 || CLASSTYPE_USE_TEMPLATE (context))
6586 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
6588 if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl))
6589 cp_pedwarn (ec_declaration_of_outside_of_class_is_not_definition,
6592 pushclass (context, 2);
6595 /* Set attributes here so if duplicate decl, will have proper attributes. */
6596 cplus_decl_attributes (decl, attributes, prefix_attributes);
6598 /* Add this decl to the current binding level, but not if it
6599 comes from another scope, e.g. a static member variable.
6600 TEM may equal DECL or it may be a previous decl of the same name. */
6602 if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE
6603 /* Definitions of namespace members outside their namespace are
6605 && TREE_CODE (DECL_CONTEXT (decl)) != NAMESPACE_DECL)
6606 || (TREE_CODE (decl) == TEMPLATE_DECL && !namespace_bindings_p ())
6607 || TREE_CODE (type) == LANG_TYPE
6608 /* The declaration of template specializations does not affect
6609 the functions available for overload resolution, so we do not
6611 || (TREE_CODE (decl) == FUNCTION_DECL
6612 && DECL_TEMPLATE_SPECIALIZATION (decl)))
6615 tem = pushdecl (decl);
6617 if (processing_template_decl)
6619 if (! current_function_decl)
6620 tem = push_template_decl (tem);
6621 else if (minimal_parse_mode)
6623 = build_min_nt (DECL_STMT, copy_to_permanent (declarator),
6624 copy_to_permanent (declspecs),
6629 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6630 /* Tell the back-end to use or not use .common as appropriate. If we say
6631 -fconserve-space, we want this to save .data space, at the expense of
6632 wrong semantics. If we say -fno-conserve-space, we want this to
6633 produce errors about redefs; to do this we force variables into the
6635 DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem);
6638 if (! processing_template_decl)
6641 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6642 push_obstacks_nochange ();
6645 /* We have no way of knowing whether the initializer will need to be
6646 evaluated at run-time or not until we've parsed it, so let's just put
6647 it in the permanent obstack. (jason) */
6649 && ! (TREE_CODE (tem) == PARM_DECL
6650 || (TREE_READONLY (tem)
6651 && (TREE_CODE (tem) == VAR_DECL
6652 || TREE_CODE (tem) == FIELD_DECL))))
6654 /* When parsing and digesting the initializer,
6655 use temporary storage. Do this even if we will ignore the value. */
6656 if (toplevel_bindings_p () && debug_temp_inits)
6658 if (processing_template_decl
6659 || TYPE_NEEDS_CONSTRUCTING (type)
6660 || TREE_CODE (type) == REFERENCE_TYPE)
6661 /* In this case, the initializer must lay down in permanent
6662 storage, since it will be saved until `finish_file' is run. */
6665 temporary_allocation ();
6677 tree type = TREE_TYPE (decl);
6678 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
6680 /* If this type of object needs a cleanup, and control may
6681 jump past it, make a new binding level so that it is cleaned
6682 up only when it is initialized first. */
6683 if (TYPE_NEEDS_DESTRUCTOR (type)
6684 && current_binding_level->more_cleanups_ok == 0)
6685 pushlevel_temporary (1);
6688 /* Is it valid for this decl to have an initializer at all?
6689 If not, set INITIALIZED to zero, which will indirectly
6690 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6692 /* Don't allow initializations for incomplete types except for
6693 arrays which might be completed by the initialization. */
6694 if (type == error_mark_node)
6695 ; /* Don't complain again. */
6696 else if (TYPE_SIZE (complete_type (type)) != NULL_TREE)
6697 ; /* A complete type is ok. */
6698 else if (TREE_CODE (type) != ARRAY_TYPE)
6700 cp_error (ec_variable_has_initializer_but_incomplete_type,
6703 type = TREE_TYPE (decl) = error_mark_node;
6705 else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
6707 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
6708 cp_error (ec_elements_of_array_have_incomplete_type, decl);
6709 /* else we already gave an error in start_decl. */
6715 && TREE_CODE (decl) != TYPE_DECL
6716 && TREE_CODE (decl) != TEMPLATE_DECL
6717 && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl))
6719 if ((! processing_template_decl || ! uses_template_parms (type))
6720 && TYPE_SIZE (complete_type (type)) == NULL_TREE)
6722 cp_error (ec_aggregate_has_incomplete_type_and_cannot_be_initialized,
6724 /* Change the type so that assemble_variable will give
6725 DECL an rtl we can live with: (mem (const_int 0)). */
6726 type = TREE_TYPE (decl) = error_mark_node;
6730 /* If any base type in the hierarchy of TYPE needs a constructor,
6731 then we set initialized to 1. This way any nodes which are
6732 created for the purposes of initializing this aggregate
6733 will live as long as it does. This is necessary for global
6734 aggregates which do not have their initializers processed until
6735 the end of the file. */
6736 initialized = TYPE_NEEDS_CONSTRUCTING (type);
6741 /* We don't do this yet for GNU C++. */
6742 /* For a local variable, define the RTL now. */
6743 if (! toplevel_bindings_p ()
6744 /* But not if this is a duplicate decl
6745 and we preserved the rtl from the previous one
6746 (which may or may not happen). */
6747 && DECL_RTL (tem) == NULL_RTX)
6749 if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
6751 else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
6752 && DECL_INITIAL (tem) != NULL_TREE)
6758 DECL_INITIAL (decl) = NULL_TREE;
6761 /* Handle initialization of references.
6762 These three arguments are from `cp_finish_decl', and have the
6763 same meaning here that they do there.
6765 Quotes on semantics can be found in ARM 8.4.3. */
6768 grok_reference_init (decl, type, init)
6769 tree decl, type, init;
6773 if (init == NULL_TREE)
6775 if ((DECL_LANG_SPECIFIC (decl) == 0
6776 || DECL_IN_AGGR_P (decl) == 0)
6777 && ! DECL_THIS_EXTERN (decl))
6779 cp_error (ec_declared_as_reference_but_not_initialized, decl);
6780 if (TREE_CODE (decl) == VAR_DECL)
6781 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6786 if (init == error_mark_node)
6789 if (TREE_CODE (type) == REFERENCE_TYPE
6790 && TREE_CODE (init) == CONSTRUCTOR)
6792 cp_error (ec_forbids_use_of_initializer_list_to_initialize_reference, decl);
6796 if (TREE_TYPE (init) && TREE_CODE (TREE_TYPE (init)) == UNKNOWN_TYPE)
6797 /* decay_conversion is probably wrong for references to functions. */
6798 init = decay_conversion (instantiate_type (TREE_TYPE (type), init, 1));
6800 if (TREE_CODE (init) == TREE_LIST)
6801 init = build_compound_expr (init);
6803 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
6804 init = convert_from_reference (init);
6806 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
6807 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
6809 /* Note: default conversion is only called in very special cases. */
6810 init = default_conversion (init);
6813 tmp = convert_to_reference
6814 (type, init, CONV_IMPLICIT,
6815 LOOKUP_SPECULATIVELY|LOOKUP_NORMAL|DIRECT_BIND, decl);
6817 if (tmp == error_mark_node)
6819 else if (tmp != NULL_TREE)
6822 DECL_INITIAL (decl) = save_expr (init);
6826 cp_error (ec_cannot_initialize_from, type, TREE_TYPE (init));
6830 /* ?? Can this be optimized in some cases to
6831 hand back the DECL_INITIAL slot?? */
6832 if (TYPE_SIZE (TREE_TYPE (type)))
6834 init = convert_from_reference (decl);
6835 if (TREE_PERMANENT (decl))
6836 init = copy_to_permanent (init);
6837 SET_DECL_REFERENCE_SLOT (decl, init);
6840 if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl)))
6842 expand_static_init (decl, DECL_INITIAL (decl));
6843 DECL_INITIAL (decl) = NULL_TREE;
6848 if (TREE_CODE (decl) == VAR_DECL)
6849 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6853 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6854 mucking with forces it does not comprehend (i.e. initialization with a
6855 constructor). If we are at global scope and won't go into COMMON, fill
6856 it in with a dummy CONSTRUCTOR to force the variable into .data;
6857 otherwise we can use error_mark_node. */
6860 obscure_complex_init (decl, init)
6863 if (! flag_no_inline && TREE_STATIC (decl))
6865 if (extract_init (decl, init))
6869 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6870 if (toplevel_bindings_p () && ! DECL_COMMON (decl))
6871 DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE,
6875 DECL_INITIAL (decl) = error_mark_node;
6880 /* Finish processing of a declaration;
6881 install its line number and initial value.
6882 If the length of an array type is not known before,
6883 it must be determined now, from the initial value, or it is an error.
6885 Call `pop_obstacks' iff NEED_POP is nonzero.
6887 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6888 for aggregates that have constructors alive on the permanent obstack,
6889 so that the global initializing functions can be written at the end.
6891 INIT0 holds the value of an initializer that should be allowed to escape
6894 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6895 if the (init) syntax was used.
6897 For functions that take default parameters, DECL points to its
6898 "maximal" instantiation. `cp_finish_decl' must then also declared its
6899 subsequently lower and lower forms of instantiation, checking for
6900 ambiguity as it goes. This can be sped up later. */
6903 cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
6910 tree cleanup = NULL_TREE, ttype = NULL_TREE;
6912 int temporary = allocation_temporary_p ();
6913 char *asmspec = NULL;
6914 int was_readonly = 0;
6915 int already_used = 0;
6917 /* If this is 0, then we did not change obstacks. */
6921 cp_error (ec_assignment_not_initialization_in_declaration);
6925 /* If a name was specified, get the string. */
6927 asmspec = TREE_STRING_POINTER (asmspec_tree);
6929 if (init && TREE_CODE (init) == NAMESPACE_DECL)
6931 cp_error (ec_annot_initialize_to_namespace,
6936 if (TREE_CODE (decl) == VAR_DECL
6937 && DECL_CONTEXT (decl)
6938 && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL
6939 && DECL_CONTEXT (decl) != current_namespace
6942 /* Leave the namespace of the object. */
6943 pop_decl_namespace ();
6946 /* If the type of the thing we are declaring either has
6947 a constructor, or has a virtual function table pointer,
6948 AND its initialization was accepted by `start_decl',
6949 then we stayed on the permanent obstack through the
6950 declaration, otherwise, changed obstacks as GCC would. */
6952 type = TREE_TYPE (decl);
6954 if (type == error_mark_node)
6956 if (toplevel_bindings_p () && temporary)
6957 end_temporary_allocation ();
6962 if (processing_template_decl)
6964 if (init && DECL_INITIAL (decl))
6965 DECL_INITIAL (decl) = init;
6966 if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl))
6968 tree stmt = DECL_VINDEX (decl);
6969 /* If the decl is declaring a member of a local class (in a
6970 template function), the DECL_VINDEX will either be NULL,
6971 or it will be an actual virtual function index, not a
6973 if (stmt != NULL_TREE && TREE_CODE (stmt) == DECL_STMT)
6975 DECL_VINDEX (decl) = NULL_TREE;
6976 TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
6983 /* Take care of TYPE_DECLs up front. */
6984 if (TREE_CODE (decl) == TYPE_DECL)
6986 if (init && DECL_INITIAL (decl))
6988 /* typedef foo = bar; store the type of bar as the type of foo. */
6989 TREE_TYPE (decl) = type = TREE_TYPE (init);
6990 DECL_INITIAL (decl) = init = NULL_TREE;
6992 if (type != error_mark_node
6993 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
6995 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
6996 cp_warning (ec_shadowing_previous_type_declaration_of, decl);
6997 set_identifier_type_value (DECL_NAME (decl), type);
6998 CLASSTYPE_GOT_SEMICOLON (type) = 1;
7000 GNU_xref_decl (current_function_decl, decl);
7002 /* If we have installed this as the canonical typedef for this
7003 type, and that type has not been defined yet, delay emitting
7004 the debug information for it, as we will emit it later. */
7005 if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
7006 && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE)
7007 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
7009 rest_of_decl_compilation (decl, NULL_PTR,
7010 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
7013 if (TREE_CODE (decl) != FUNCTION_DECL)
7015 ttype = target_type (type);
7018 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl)
7019 && TYPE_NEEDS_CONSTRUCTING (type))
7022 /* Currently, GNU C++ puts constants in text space, making them
7023 impossible to initialize. In the future, one would hope for
7024 an operating system which understood the difference between
7025 initialization and the running of a program. */
7027 TREE_READONLY (decl) = 0;
7030 if (TREE_CODE (decl) == FIELD_DECL)
7032 if (init && init != error_mark_node)
7033 my_friendly_assert (TREE_PERMANENT (init), 147);
7037 /* This must override the asm specifier which was placed
7038 by grokclassfn. Lay this out fresh. */
7039 DECL_RTL (TREE_TYPE (decl)) = NULL_RTX;
7040 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
7041 make_decl_rtl (decl, asmspec, 0);
7044 /* If `start_decl' didn't like having an initialization, ignore it now. */
7045 else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
7047 else if (DECL_EXTERNAL (decl))
7049 else if (TREE_CODE (type) == REFERENCE_TYPE
7050 || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type)))
7052 if (TREE_STATIC (decl))
7053 make_decl_rtl (decl, NULL_PTR,
7054 toplevel_bindings_p ()
7055 || pseudo_global_level_p ());
7056 grok_reference_init (decl, type, init);
7060 GNU_xref_decl (current_function_decl, decl);
7062 if (TREE_CODE (decl) == FIELD_DECL)
7064 else if (TREE_CODE (decl) == CONST_DECL)
7066 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
7068 DECL_INITIAL (decl) = init;
7070 /* This will keep us from needing to worry about our obstacks. */
7071 my_friendly_assert (init != NULL_TREE, 149);
7076 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
7078 if (TREE_CODE (type) == ARRAY_TYPE)
7079 init = digest_init (type, init, (tree *) 0);
7080 else if (TREE_CODE (init) == CONSTRUCTOR)
7082 if (TYPE_NON_AGGREGATE_CLASS (type))
7084 cp_error (ec_must_be_initialized_by_constructor_not_by,
7086 init = error_mark_node;
7089 goto dont_use_constructor;
7094 dont_use_constructor:
7095 if (TREE_CODE (init) != TREE_VEC)
7096 init = store_init_value (decl, init);
7100 /* We must hide the initializer so that expand_decl
7101 won't try to do something it does not understand. */
7102 init = obscure_complex_init (decl, init);
7104 else if (DECL_EXTERNAL (decl))
7106 else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't'
7107 && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type)))
7110 while (TREE_CODE (ctype) == ARRAY_TYPE)
7111 ctype = TREE_TYPE (ctype);
7112 if (! TYPE_NEEDS_CONSTRUCTING (ctype))
7114 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype))
7115 cp_error (ec_structure_with_uninitialized_const_members, decl);
7116 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype))
7117 cp_error (ec_structure_with_uninitialized_reference_members,
7121 if (TREE_CODE (decl) == VAR_DECL
7122 && !DECL_INITIAL (decl)
7123 && !TYPE_NEEDS_CONSTRUCTING (type)
7124 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
7125 cp_error (ec_uninitialized_const, decl);
7127 if (TYPE_SIZE (type) != NULL_TREE
7128 && TYPE_NEEDS_CONSTRUCTING (type))
7129 init = obscure_complex_init (decl, NULL_TREE);
7131 else if (TREE_CODE (decl) == VAR_DECL
7132 && TREE_CODE (type) != REFERENCE_TYPE
7133 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
7135 /* ``Unless explicitly declared extern, a const object does not have
7136 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
7137 However, if it's `const int foo = 1; const int foo;', don't complain
7138 about the second decl, since it does have an initializer before.
7139 We deliberately don't complain about arrays, because they're
7140 supposed to be initialized by a constructor. */
7141 if (! DECL_INITIAL (decl)
7142 && TREE_CODE (type) != ARRAY_TYPE
7143 && (!pedantic || !current_class_type))
7144 cp_error (ec_uninitialized_const, decl);
7147 /* For top-level declaration, the initial value was read in
7148 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7149 must go in the permanent obstack; but don't discard the
7150 temporary data yet. */
7152 if (toplevel_bindings_p () && temporary)
7153 end_temporary_allocation ();
7155 /* Deduce size of array from initialization, if not already known. */
7157 if (TREE_CODE (type) == ARRAY_TYPE
7158 && TYPE_DOMAIN (type) == NULL_TREE
7159 && TREE_CODE (decl) != TYPE_DECL)
7162 = (TREE_STATIC (decl)
7163 /* Even if pedantic, an external linkage array
7164 may have incomplete type at first. */
7165 ? pedantic && ! DECL_EXTERNAL (decl)
7166 : !DECL_EXTERNAL (decl));
7167 tree initializer = init ? init : DECL_INITIAL (decl);
7168 int failure = complete_array_type (type, initializer, do_default);
7171 cp_error (ec_initializer_fails_to_determine_size_of, decl);
7176 cp_error (ec_array_size_missing_in, decl);
7177 /* If a `static' var's size isn't known, make it extern as
7178 well as static, so it does not get allocated. If it's not
7179 `static', then don't mark it extern; finish_incomplete_decl
7180 will give it a default size and it will get allocated. */
7181 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
7182 DECL_EXTERNAL (decl) = 1;
7185 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
7186 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
7188 cp_error (ec_zerosize_array, decl);
7190 layout_decl (decl, 0);
7193 if (TREE_CODE (decl) == VAR_DECL)
7195 if (DECL_SIZE (decl) == NULL_TREE
7196 && TYPE_SIZE (complete_type (TREE_TYPE (decl))) != NULL_TREE)
7197 layout_decl (decl, 0);
7199 if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE)
7201 /* A static variable with an incomplete type:
7202 that is an error if it is initialized.
7203 Otherwise, let it through, but if it is not `extern'
7204 then it may cause an error message later. */
7205 if (DECL_INITIAL (decl) != NULL_TREE)
7206 cp_error (ec_storage_size_of_isnt_known, decl);
7209 else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
7211 /* An automatic variable with an incomplete type: that is an error.
7212 Don't talk about array types here, since we took care of that
7213 message in grokdeclarator. */
7214 cp_error (ec_storage_size_of_isnt_known, decl);
7215 TREE_TYPE (decl) = error_mark_node;
7217 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
7218 /* Let debugger know it should output info for this type. */
7219 note_debug_info_needed (ttype);
7221 if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl))
7222 note_debug_info_needed (DECL_CONTEXT (decl));
7224 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
7225 && DECL_SIZE (decl) != NULL_TREE
7226 && ! TREE_CONSTANT (DECL_SIZE (decl)))
7228 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
7229 constant_expression_warning (DECL_SIZE (decl));
7231 cp_error (ec_storage_size_of_isnt_constant, decl);
7234 if (! DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)
7235 /* Cleanups for static variables are handled by `finish_file'. */
7236 && ! TREE_STATIC (decl))
7238 int yes = suspend_momentary ();
7239 cleanup = maybe_build_cleanup (decl);
7240 resume_momentary (yes);
7243 /* PARM_DECLs get cleanups, too. */
7244 else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type))
7247 end_temporary_allocation ();
7248 cleanup = maybe_build_cleanup (decl);
7250 resume_temporary_allocation ();
7253 /* Output the assembler code and/or RTL code for variables and functions,
7254 unless the type is an undefined structure or union.
7255 If not, it will get done when the type is completed. */
7257 was_incomplete = (DECL_SIZE (decl) == NULL_TREE);
7259 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL
7260 || TREE_CODE (decl) == RESULT_DECL)
7262 /* ??? FIXME: What about nested classes? */
7263 int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
7265 = (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)
7266 && allocation_temporary_p ());
7269 end_temporary_allocation ();
7271 /* Extern inline function static data has external linkage.
7272 Instead of trying to deal with that, we disable inlining of
7273 such functions. The ASM_WRITTEN check is to avoid hitting this
7274 for __FUNCTION__. */
7275 if (TREE_CODE (decl) == VAR_DECL
7276 && TREE_STATIC (decl)
7277 && ! TREE_ASM_WRITTEN (decl)
7278 && current_function_decl
7279 && DECL_CONTEXT (decl) == current_function_decl
7280 && DECL_THIS_INLINE (current_function_decl)
7281 && TREE_PUBLIC (current_function_decl))
7283 current_function_cannot_inline
7284 = "function with static variable cannot be inline";
7287 else if (TREE_CODE (decl) == VAR_DECL
7288 && DECL_LANG_SPECIFIC (decl)
7289 && DECL_COMDAT (decl))
7291 /* Dynamically initialized vars go into common. */
7292 if (DECL_INITIAL (decl) == NULL_TREE
7293 || DECL_INITIAL (decl) == error_mark_node)
7294 DECL_COMMON (decl) = 1;
7295 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
7297 DECL_COMMON (decl) = 1;
7298 DECL_INITIAL (decl) = error_mark_node;
7302 /* Statically initialized vars are weak or comdat, if
7305 make_decl_one_only (decl);
7308 /* We can't do anything useful; leave vars for explicit
7310 DECL_EXTERNAL (decl) = 1;
7311 DECL_NOT_REALLY_EXTERN (decl) = 0;
7316 if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
7317 make_decl_rtl (decl, NULL_PTR, toplev);
7318 else if (TREE_CODE (decl) == VAR_DECL
7319 && TREE_READONLY (decl)
7320 && DECL_INITIAL (decl) != NULL_TREE
7321 && DECL_INITIAL (decl) != error_mark_node
7322 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
7324 DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl));
7327 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
7330 && TREE_STATIC (decl)
7331 && ! TREE_SIDE_EFFECTS (decl)
7332 && ! TREE_PUBLIC (decl)
7333 && ! DECL_EXTERNAL (decl)
7334 && ! TYPE_NEEDS_DESTRUCTOR (type)
7335 && DECL_MODE (decl) != BLKmode)
7337 /* If this variable is really a constant, then fill its DECL_RTL
7338 slot with something which won't take up storage.
7339 If something later should take its address, we can always give
7340 it legitimate RTL at that time. */
7341 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
7342 store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0);
7343 TREE_ASM_WRITTEN (decl) = 1;
7345 else if (toplev && ! TREE_PUBLIC (decl))
7347 /* If this is a static const, change its apparent linkage
7348 if it belongs to a #pragma interface. */
7349 if (!interface_unknown)
7351 TREE_PUBLIC (decl) = 1;
7352 DECL_EXTERNAL (decl) = interface_only;
7354 make_decl_rtl (decl, asmspec, toplev);
7357 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
7359 else if (TREE_CODE (decl) == VAR_DECL
7360 && DECL_LANG_SPECIFIC (decl)
7361 && DECL_IN_AGGR_P (decl))
7363 if (TREE_STATIC (decl))
7365 if (init == NULL_TREE
7366 #ifdef DEFAULT_STATIC_DEFS
7367 /* If this code is dead, then users must
7368 explicitly declare static member variables
7369 outside the class def'n as well. */
7370 && TYPE_NEEDS_CONSTRUCTING (type)
7374 DECL_EXTERNAL (decl) = 1;
7375 make_decl_rtl (decl, asmspec, 1);
7378 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
7381 /* Just a constant field. Should not need any rtl. */
7385 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
7388 resume_temporary_allocation ();
7390 if (type != error_mark_node
7391 && TYPE_LANG_SPECIFIC (type)
7392 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
7393 abstract_virtuals_error (decl, type);
7394 else if ((TREE_CODE (type) == FUNCTION_TYPE
7395 || TREE_CODE (type) == METHOD_TYPE)
7396 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
7397 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type)))
7398 abstract_virtuals_error (decl, TREE_TYPE (type));
7400 if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type))
7401 signature_error (decl, type);
7402 else if ((TREE_CODE (type) == FUNCTION_TYPE
7403 || TREE_CODE (type) == METHOD_TYPE)
7404 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
7405 && IS_SIGNATURE (TREE_TYPE (type)))
7406 signature_error (decl, TREE_TYPE (type));
7408 if (TREE_CODE (decl) == FUNCTION_DECL)
7410 else if (DECL_EXTERNAL (decl)
7411 && ! (DECL_LANG_SPECIFIC (decl)
7412 && DECL_NOT_REALLY_EXTERN (decl)))
7415 DECL_INITIAL (decl) = init;
7417 else if (TREE_STATIC (decl) && type != error_mark_node)
7419 /* Cleanups for static variables are handled by `finish_file'. */
7420 if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE
7421 || TYPE_NEEDS_DESTRUCTOR (type))
7422 expand_static_init (decl, init);
7426 /* This is a declared decl which must live until the
7427 end of the binding contour. It may need a cleanup. */
7429 /* Recompute the RTL of a local array now
7430 if it used to be an incomplete type. */
7431 if (was_incomplete && ! TREE_STATIC (decl))
7433 /* If we used it already as memory, it must stay in memory. */
7434 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
7435 /* If it's still incomplete now, no init will save it. */
7436 if (DECL_SIZE (decl) == NULL_TREE)
7437 DECL_INITIAL (decl) = NULL_TREE;
7440 else if (! TREE_ASM_WRITTEN (decl)
7441 && (TYPE_SIZE (type) != NULL_TREE
7442 || TREE_CODE (type) == ARRAY_TYPE))
7444 /* Do this here, because we did not expand this decl's
7445 rtl in start_decl. */
7446 if (DECL_RTL (decl) == NULL_RTX)
7450 /* XXX: Why don't we use decl here? */
7451 /* Ans: Because it was already expanded? */
7452 if (! expand_decl_cleanup (NULL_TREE, cleanup))
7453 cp_error (ec_parser_lost_in_parsing_declaration_of,
7455 /* Cleanup used up here. */
7456 cleanup = NULL_TREE;
7460 if (current_binding_level->is_for_scope)
7462 struct binding_level *outer = current_binding_level->level_chain;
7464 /* Check to see if the same name is already bound at
7465 the outer level, either because it was directly declared,
7466 or because a dead for-decl got preserved. In either case,
7467 the code would not have been valid under the ARM
7468 scope rules, so clear is_for_scope for the
7469 current_binding_level.
7471 Otherwise, we need to preserve the temp slot for decl
7472 to last into the outer binding level. */
7474 int handling_dead_for_vars = 0;
7475 tree link = outer->names;
7476 for (; ; link = TREE_CHAIN (link))
7478 if (link == NULL && handling_dead_for_vars == 0)
7480 link = outer->dead_vars_from_for;
7481 handling_dead_for_vars = 1;
7485 if (DECL_IN_MEMORY_P (decl))
7486 preserve_temp_slots (DECL_RTL (decl));
7489 if (DECL_NAME (link) == DECL_NAME (decl))
7491 if (handling_dead_for_vars)
7494 = purpose_member (DECL_NAME (decl),
7495 current_binding_level->shadowed);
7496 if (shadowing && TREE_VALUE (shadowing) == link)
7497 TREE_VALUE (shadowing)
7498 = DECL_SHADOWED_FOR_VAR (link);
7500 current_binding_level->is_for_scope = 0;
7506 expand_start_target_temps ();
7508 if (DECL_SIZE (decl) && type != error_mark_node)
7510 /* Compute and store the initial value. */
7511 expand_decl_init (decl);
7512 already_used = TREE_USED (decl) || TREE_USED (type);
7514 if (init || TYPE_NEEDS_CONSTRUCTING (type))
7516 emit_line_note (DECL_SOURCE_FILE (decl),
7517 DECL_SOURCE_LINE (decl));
7518 expand_aggr_init (decl, init, 0, flags);
7521 /* Set this to 0 so we can tell whether an aggregate which
7522 was initialized was ever used. Don't do this if it has a
7523 destructor, so we don't complain about the 'resource
7524 allocation is initialization' idiom. */
7525 /* Now set attribute((unused)) on types so decls of
7526 that type will be marked used. (see TREE_USED, above.)
7527 This avoids the warning problems this particular code
7528 tried to work around. */
7530 if (TYPE_NEEDS_CONSTRUCTING (type)
7532 && cleanup == NULL_TREE
7533 && DECL_NAME (decl))
7534 TREE_USED (decl) = 0;
7537 TREE_USED (decl) = 1;
7540 /* Cleanup any temporaries needed for the initial value. */
7541 expand_end_target_temps ();
7543 if (DECL_SIZE (decl) && type != error_mark_node)
7545 /* Store the cleanup, if there was one. */
7548 if (! expand_decl_cleanup (decl, cleanup))
7549 cp_error (ec_parser_lost_in_parsing_declaration_of,
7556 /* Undo call to `pushclass' that was done in `start_decl'
7557 due to initialization of qualified member variable.
7558 I.e., Foo::x = 10; */
7560 tree context = DECL_REAL_CONTEXT (decl);
7562 && TREE_CODE_CLASS (TREE_CODE (context)) == 't'
7563 && (TREE_CODE (decl) == VAR_DECL
7564 /* We also have a pushclass done that we need to undo here
7565 if we're at top level and declare a method. */
7566 || TREE_CODE (decl) == FUNCTION_DECL)
7567 /* If size hasn't been set, we're still defining it,
7568 and therefore inside the class body; don't pop
7569 the binding level.. */
7570 && TYPE_SIZE (context) != NULL_TREE
7571 && context == current_class_type)
7578 /* If requested, warn about definitions of large data objects. */
7580 if (warn_larger_than
7581 && ! processing_template_decl
7582 && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL)
7583 && !DECL_EXTERNAL (decl))
7585 register tree decl_size = DECL_SIZE (decl);
7587 if (decl_size && TREE_CODE (decl_size) == INTEGER_CST)
7589 unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT;
7591 if (units > larger_than_size)
7592 warning_with_decl (decl, "size of `%s' is %u bytes", units);
7598 /* Resume permanent allocation, if not within a function. */
7599 /* The corresponding push_obstacks_nochange is in start_decl,
7600 start_method, groktypename, and in grokfield. */
7605 TREE_READONLY (decl) = 1;
7608 /* This is here for a midend callback from c-common.c */
7611 finish_decl (decl, init, asmspec_tree)
7615 cp_finish_decl (decl, init, asmspec_tree, 1, 0);
7619 expand_static_init (decl, init)
7623 tree oldstatic = value_member (decl, static_aggregates);
7627 if (TREE_PURPOSE (oldstatic) && init != NULL_TREE)
7628 cp_error (ec_multiple_initializations_given_for, decl);
7630 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7632 /* Emit code to perform this initialization but once. */
7635 /* Remember this information until end of file. */
7636 push_obstacks (&permanent_obstack, &permanent_obstack);
7638 /* Emit code to perform this initialization but once. */
7639 temp = get_temp_name (integer_type_node, 1);
7640 rest_of_decl_compilation (temp, NULL_PTR, 0, 0);
7641 expand_start_cond (build_binary_op (EQ_EXPR, temp,
7642 integer_zero_node, 1), 0);
7643 expand_start_target_temps ();
7645 expand_assignment (temp, integer_one_node, 0, 0);
7646 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
7647 || (init && TREE_CODE (init) == TREE_LIST))
7649 expand_aggr_init (decl, init, 0, 0);
7650 do_pending_stack_adjust ();
7653 expand_assignment (decl, init, 0, 0);
7655 /* Cleanup any temporaries needed for the initial value. */
7656 expand_end_target_temps ();
7658 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
7660 tree cleanup, fcall;
7661 static tree Atexit = 0;
7664 tree atexit_fndecl, PFV, pfvlist;
7665 /* Remember this information until end of file. */
7666 push_obstacks (&permanent_obstack, &permanent_obstack);
7667 PFV = build_pointer_type (build_function_type
7668 (void_type_node, void_list_node));
7670 pfvlist = tree_cons (NULL_TREE, PFV, void_list_node);
7672 push_lang_context (lang_name_c);
7674 = builtin_function ("atexit",
7675 build_function_type (void_type_node,
7677 NOT_BUILT_IN, NULL_PTR);
7678 assemble_external (atexit_fndecl);
7679 Atexit = default_conversion (atexit_fndecl);
7680 pop_lang_context ();
7684 cleanup = start_anon_func ();
7685 expand_expr_stmt (build_cleanup (decl));
7687 mark_addressable (cleanup);
7688 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
7689 fcall = build_function_call (Atexit, expr_tree_cons (NULL_TREE, cleanup, NULL_TREE));
7690 expand_expr_stmt (fcall);
7694 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
7696 static_aggregates = perm_tree_cons (temp, decl, static_aggregates);
7697 TREE_STATIC (static_aggregates) = 1;
7700 /* Resume old (possibly temporary) allocation. */
7705 /* This code takes into account memory allocation
7706 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7707 does not hold for this object, then we must make permanent
7708 the storage currently in the temporary obstack. */
7709 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
7710 preserve_initializer ();
7711 static_aggregates = perm_tree_cons (init, decl, static_aggregates);
7715 /* Make TYPE a complete type based on INITIAL_VALUE.
7716 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7717 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7720 complete_array_type (type, initial_value, do_default)
7721 tree type, initial_value;
7724 register tree maxindex = NULL_TREE;
7729 /* Note MAXINDEX is really the maximum index,
7730 one less than the size. */
7731 if (TREE_CODE (initial_value) == STRING_CST)
7734 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
7735 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
7738 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
7740 tree elts = CONSTRUCTOR_ELTS (initial_value);
7741 maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node);
7742 for (; elts; elts = TREE_CHAIN (elts))
7744 if (TREE_PURPOSE (elts))
7745 maxindex = TREE_PURPOSE (elts);
7747 maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node);
7749 maxindex = copy_node (maxindex);
7753 /* Make an error message unless that happened already. */
7754 if (initial_value != error_mark_node)
7757 /* Prevent further error messages. */
7758 maxindex = build_int_2 (0, 0);
7765 maxindex = build_int_2 (0, 0);
7773 TYPE_DOMAIN (type) = build_index_type (maxindex);
7774 if (! TREE_TYPE (maxindex))
7775 TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
7777 itype = TREE_TYPE (initial_value);
7780 if (itype && !TYPE_DOMAIN (itype))
7781 TYPE_DOMAIN (itype) = TYPE_DOMAIN (type);
7782 /* The type of the main variant should never be used for arrays
7783 of different sizes. It should only ever be completed with the
7784 size of the array. */
7785 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
7786 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type);
7789 /* Lay out the type now that we can get the real answer. */
7796 /* Return zero if something is declared to be a member of type
7797 CTYPE when in the context of CUR_TYPE. STRING is the error
7798 message to print in that case. Otherwise, quietly return 1. */
7801 member_function_or_else (ctype, cur_type, string)
7802 tree ctype, cur_type;
7805 if (ctype && ctype != cur_type)
7807 error (string, TYPE_NAME_STRING (ctype));
7813 /* Subroutine of `grokdeclarator'. */
7815 /* Generate errors possibly applicable for a given set of specifiers.
7816 This is for ARM $7.1.2. */
7819 bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises)
7822 int virtualp, quals, friendp, raises, inlinep;
7825 cp_error (ec_declared_as_a_virtual_s, object, type);
7827 cp_error (ec_declared_as_an_inline_s, object, type);
7829 cp_error (ec_const_and_volatile_function_specifiers_on_invalid_in_s_declaration,
7832 cp_error_at (ec_invalid_friend_declaration, object);
7834 cp_error_at (ec_invalid_exception_specifications, object);
7837 /* CTYPE is class type, or null if non-class.
7838 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7840 DECLARATOR is the function's name.
7841 VIRTUALP is truthvalue of whether the function is virtual or not.
7842 FLAGS are to be passed through to `grokclassfn'.
7843 QUALS are qualifiers indicating whether the function is `const'
7845 RAISES is a list of exceptions that this function can raise.
7846 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7847 not look, and -1 if we should not call `grokclassfn' at all. */
7850 grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
7851 raises, attrlist, check, friendp, publicp, inlinep, funcdef_flag,
7852 template_count, in_namespace)
7855 tree orig_declarator;
7857 enum overload_flags flags;
7858 tree quals, raises, attrlist;
7859 int check, friendp, publicp, inlinep, funcdef_flag, template_count;
7863 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
7867 cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
7868 ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
7874 type = build_exception_variant (type, raises);
7877 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
7878 /* Propagate volatile out from type to decl. */
7879 if (TYPE_VOLATILE (type))
7880 TREE_THIS_VOLATILE (decl) = 1;
7882 /* This decl is not from the current namespace. */
7884 set_decl_namespace (decl, in_namespace);
7886 /* Should probably propagate const out from type to decl I bet (mrs). */
7889 DECL_STATIC_FUNCTION_P (decl) = 1;
7890 DECL_CONTEXT (decl) = ctype;
7894 DECL_CLASS_CONTEXT (decl) = ctype;
7896 if (ctype == NULL_TREE && MAIN_NAME_P (declarator))
7899 cp_error (ec_cannot_declare_main_to_be_inline);
7901 cp_error (ec_cannot_declare_main_to_be_static);
7906 /* Members of anonymous types have no linkage; make them internal. */
7907 if (ctype && ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype)))
7912 /* [basic.link]: A name with no linkage (notably, the name of a class
7913 or enumeration declared in a local scope) shall not be used to
7914 declare an entity with linkage.
7916 Only check this for public decls for now. */
7917 t = no_linkage_check (TREE_TYPE (decl));
7920 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
7921 cp_pedwarn (ec_nonlocal_function_uses_anonymous_type, decl);
7923 cp_pedwarn (ec_nonlocal_function_uses_local_type,
7928 TREE_PUBLIC (decl) = publicp;
7931 DECL_INTERFACE_KNOWN (decl) = 1;
7932 DECL_NOT_REALLY_EXTERN (decl) = 1;
7936 DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1;
7938 DECL_EXTERNAL (decl) = 1;
7939 if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE)
7941 cp_error (ec_smember_function_cannot_have_method_qualifier,
7942 (ctype ? "static " : "non-"), decl, TREE_VALUE (quals));
7946 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
7947 grok_op_properties (decl, virtualp, check < 0);
7949 if (ctype && hack_decl_function_context (decl))
7950 DECL_NO_STATIC_CHAIN (decl) = 1;
7952 for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
7953 if (TREE_PURPOSE (t)
7954 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
7956 add_defarg_fn (decl);
7961 && TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR)
7964 cp_error (ec_defining_explicit_specialization_in_friend_declaration,
7968 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
7970 /* Something like `template <class T> friend void f<T>()'. */
7971 cp_error (ec_templateid_in_declaration_of_primary_template,
7973 return error_mark_node;
7976 /* A friend declaration of the form friend void f<>(). Record
7977 the information in the TEMPLATE_ID_EXPR. */
7978 SET_DECL_IMPLICIT_INSTANTIATION (decl);
7979 DECL_TEMPLATE_INFO (decl)
7980 = perm_tree_cons (TREE_OPERAND (orig_declarator, 0),
7981 TREE_OPERAND (orig_declarator, 1),
7986 /* Caller will do the rest of this. */
7990 if (check && funcdef_flag)
7991 DECL_INITIAL (decl) = error_mark_node;
7993 if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
7996 /* Just handle constructors here. We could do this
7997 inside the following if stmt, but I think
7998 that the code is more legible by breaking this
7999 case out. See comments below for what each of
8000 the following calls is supposed to do. */
8001 DECL_CONSTRUCTOR_P (decl) = 1;
8003 grokclassfn (ctype, declarator, decl, flags, quals);
8005 decl = check_explicit_specialization (orig_declarator, decl,
8007 2 * (funcdef_flag != 0) +
8008 4 * (friendp != 0));
8009 if (decl == error_mark_node)
8010 return error_mark_node;
8012 if ((! TYPE_FOR_JAVA (ctype) || check_java_method (ctype, decl))
8015 tmp = check_classfn (ctype, decl);
8017 if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL)
8018 tmp = DECL_TEMPLATE_RESULT(tmp);
8020 if (tmp && DECL_ARTIFICIAL (tmp))
8021 cp_error (ec_definition_of_implicitlydeclared, tmp);
8022 if (tmp && duplicate_decls (decl, tmp))
8025 if (! grok_ctor_properties (ctype, decl))
8028 if (check == 0 && ! current_function_decl)
8030 /* Assembler names live in the global namespace. */
8031 tmp = IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl));
8032 if (tmp == NULL_TREE)
8033 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl), decl);
8034 else if (TREE_CODE (tmp) != TREE_CODE (decl))
8035 cp_error (ec_inconsistent_declarations_for, decl);
8038 duplicate_decls (decl, tmp);
8041 make_decl_rtl (decl, NULL_PTR, 1);
8048 /* Function gets the ugly name, field gets the nice one.
8049 This call may change the type of the function (because
8050 of default parameters)! */
8051 if (ctype != NULL_TREE)
8052 grokclassfn (ctype, cname, decl, flags, quals);
8054 decl = check_explicit_specialization (orig_declarator, decl,
8056 2 * (funcdef_flag != 0) +
8057 4 * (friendp != 0));
8058 if (decl == error_mark_node)
8059 return error_mark_node;
8061 if (ctype != NULL_TREE
8062 && (! TYPE_FOR_JAVA (ctype) || check_java_method (ctype, decl))
8065 tmp = check_classfn (ctype, decl);
8067 if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL)
8068 tmp = DECL_TEMPLATE_RESULT (tmp);
8070 if (tmp && DECL_STATIC_FUNCTION_P (tmp)
8071 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
8073 /* Remove the `this' parm added by grokclassfn.
8074 XXX Isn't this done in start_function, too? */
8075 revert_static_member_fn (&decl, NULL, NULL);
8076 last_function_parms = TREE_CHAIN (last_function_parms);
8078 if (tmp && DECL_ARTIFICIAL (tmp))
8079 cp_error (ec_definition_of_implicitlydeclared, tmp);
8082 if (!duplicate_decls (decl, tmp))
8083 my_friendly_abort (892);
8088 if (ctype == NULL_TREE || check)
8091 /* Now install the declaration of this function so that others may
8092 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
8094 if (! current_function_decl)
8096 if (!DECL_TEMPLATE_SPECIALIZATION (decl))
8098 /* We don't do this for specializations since the
8099 equivalent checks will be done later. Also, at this
8100 point the DECL_ASSEMBLER_NAME is not yet fully
8103 /* FIXME: this should only need to look at
8104 IDENTIFIER_GLOBAL_VALUE. */
8105 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
8106 if (tmp == NULL_TREE)
8107 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl), decl);
8108 else if (TREE_CODE (tmp) != TREE_CODE (decl))
8109 cp_error (ec_inconsistent_declarations_for, decl);
8112 duplicate_decls (decl, tmp);
8118 cplus_decl_attributes (decl, TREE_PURPOSE (attrlist),
8119 TREE_VALUE (attrlist));
8120 make_decl_rtl (decl, NULL_PTR, 1);
8124 DECL_VIRTUAL_P (decl) = 1;
8125 if (DECL_VINDEX (decl) == NULL_TREE)
8126 DECL_VINDEX (decl) = error_mark_node;
8127 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1;
8134 grokvardecl (type, declarator, specbits_in, initialized, constp, in_namespace)
8137 RID_BIT_TYPE *specbits_in;
8143 RID_BIT_TYPE specbits;
8145 specbits = *specbits_in;
8147 if (TREE_CODE (type) == OFFSET_TYPE)
8149 /* If you declare a static member so that it
8150 can be initialized, the code will reach here. */
8151 tree basetype = TYPE_OFFSET_BASETYPE (type);
8152 type = TREE_TYPE (type);
8153 decl = build_lang_field_decl (VAR_DECL, declarator, type);
8154 DECL_CONTEXT (decl) = basetype;
8155 DECL_CLASS_CONTEXT (decl) = basetype;
8156 DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator);
8160 tree context = in_namespace ? in_namespace : current_namespace;
8161 decl = build_decl (VAR_DECL, declarator, complete_type (type));
8162 if (context != global_namespace && namespace_bindings_p ()
8163 && current_lang_name != lang_name_c)
8164 DECL_ASSEMBLER_NAME (decl) = build_static_name (context,
8169 set_decl_namespace (decl, in_namespace);
8171 if (RIDBIT_SETP (RID_EXTERN, specbits))
8173 DECL_THIS_EXTERN (decl) = 1;
8174 DECL_EXTERNAL (decl) = !initialized;
8177 /* In class context, static means one per class,
8178 public access, and static storage. */
8179 if (DECL_CLASS_SCOPE_P (decl))
8181 TREE_PUBLIC (decl) = 1;
8182 TREE_STATIC (decl) = 1;
8183 DECL_EXTERNAL (decl) = 0;
8185 /* At top level, either `static' or no s.c. makes a definition
8186 (perhaps tentative), and absence of `static' makes it public. */
8187 else if (toplevel_bindings_p ())
8189 TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits)
8190 && (DECL_THIS_EXTERN (decl) || ! constp));
8191 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
8193 /* Not at top level, only `static' makes a static definition. */
8196 TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits);
8197 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
8200 if (TREE_PUBLIC (decl))
8202 /* [basic.link]: A name with no linkage (notably, the name of a class
8203 or enumeration declared in a local scope) shall not be used to
8204 declare an entity with linkage.
8206 Only check this for public decls for now. */
8207 tree t = no_linkage_check (TREE_TYPE (decl));
8210 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
8211 /* Ignore for now; `enum { foo } e' is pretty common. */;
8213 cp_pedwarn (ec_nonlocal_variable_uses_local_type,
8221 /* Create a canonical pointer to member function type. */
8224 build_ptrmemfunc_type (type)
8231 /* If a canonical type already exists for this type, use it. We use
8232 this method instead of type_hash_canon, because it only does a
8233 simple equality check on the list of field members. */
8235 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
8238 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
8240 u = make_lang_type (UNION_TYPE);
8241 IS_AGGR_TYPE (u) = 0;
8242 fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type);
8243 fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier,
8245 finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node);
8246 TYPE_NAME (u) = NULL_TREE;
8248 t = make_lang_type (RECORD_TYPE);
8250 /* Let the front-end know this is a pointer to member function... */
8251 TYPE_PTRMEMFUNC_FLAG (t) = 1;
8252 /* ... and not really an aggregate. */
8253 IS_AGGR_TYPE (t) = 0;
8255 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
8257 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
8259 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u);
8260 finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node);
8264 /* Zap out the name so that the back-end will give us the debugging
8265 information for this anonymous RECORD_TYPE. */
8266 TYPE_NAME (t) = NULL_TREE;
8268 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
8270 /* Seems to be wanted. */
8271 CLASSTYPE_GOT_SEMICOLON (t) = 1;
8275 /* Given declspecs and a declarator,
8276 determine the name and type of the object declared
8277 and construct a ..._DECL node for it.
8278 (In one case we can return a ..._TYPE node instead.
8279 For invalid input we sometimes return 0.)
8281 DECLSPECS is a chain of tree_list nodes whose value fields
8282 are the storage classes and type specifiers.
8284 DECL_CONTEXT says which syntactic context this declaration is in:
8285 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8286 FUNCDEF for a function definition. Like NORMAL but a few different
8287 error messages in each case. Return value may be zero meaning
8288 this definition is too screwy to try to parse.
8289 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8290 handle member functions (which have FIELD context).
8291 Return value may be zero meaning this definition is too screwy to
8293 PARM for a parameter declaration (either within a function prototype
8294 or before a function body). Make a PARM_DECL, or return void_type_node.
8295 CATCHPARM for a parameter declaration before a catch clause.
8296 TYPENAME if for a typename (in a cast or sizeof).
8297 Don't make a DECL node; just return the ..._TYPE node.
8298 FIELD for a struct or union field; make a FIELD_DECL.
8299 BITFIELD for a field with specified width.
8300 INITIALIZED is 1 if the decl has an initializer.
8302 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8303 It may also be so in the PARM case, for a prototype where the
8304 argument type is specified but not the name.
8306 This function is where the complicated C meanings of `static'
8307 and `extern' are interpreted.
8309 For C++, if there is any monkey business to do, the function which
8310 calls this one must do it, i.e., prepending instance variables,
8311 renaming overloaded function names, etc.
8313 Note that for this C++, it is an error to define a method within a class
8314 which does not belong to that class.
8316 Except in the case where SCOPE_REFs are implicitly known (such as
8317 methods within a class being redundantly qualified),
8318 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8319 (class_name::decl_name). The caller must also deal with this.
8321 If a constructor or destructor is seen, and the context is FIELD,
8322 then the type gains the attribute TREE_HAS_x. If such a declaration
8323 is erroneous, NULL_TREE is returned.
8325 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8326 function, these are the qualifiers to give to the `this' pointer.
8328 May return void_type_node if the declarator turned out to be a friend.
8329 See grokfield for details. */
8331 enum return_types { return_normal, return_ctor, return_dtor, return_conversion };
8334 grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
8337 enum decl_context decl_context;
8341 RID_BIT_TYPE specbits;
8344 tree type = NULL_TREE;
8348 int virtualp, explicitp, friendp, inlinep, staticp;
8349 int explicit_int = 0;
8350 int explicit_char = 0;
8351 int defaulted_int = 0;
8352 int opaque_typedef = 0;
8353 tree typedef_decl = NULL_TREE;
8355 tree typedef_type = NULL_TREE;
8356 int funcdef_flag = 0;
8357 enum tree_code innermost_code = ERROR_MARK;
8360 /* See the code below that used this. */
8361 tree decl_machine_attr = NULL_TREE;
8363 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8364 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8365 tree init = NULL_TREE;
8367 /* Keep track of what sort of function is being processed
8368 so that we can warn about default return values, or explicit
8369 return values which do not match prescribed defaults. */
8370 enum return_types return_type = return_normal;
8372 tree dname = NULL_TREE;
8373 tree ctype = current_class_type;
8374 tree ctor_return_type = NULL_TREE;
8375 enum overload_flags flags = NO_SPECIAL;
8376 tree quals = NULL_TREE;
8377 tree raises = NULL_TREE;
8378 int template_count = 0;
8379 tree in_namespace = NULL_TREE;
8381 RIDBIT_RESET_ALL (specbits);
8382 if (decl_context == FUNCDEF)
8383 funcdef_flag = 1, decl_context = NORMAL;
8384 else if (decl_context == MEMFUNCDEF)
8385 funcdef_flag = -1, decl_context = FIELD;
8386 else if (decl_context == BITFIELD)
8387 bitfield = 1, decl_context = FIELD;
8389 /* Look inside a declarator for the name being declared
8390 and get it as a string, for an error message. */
8392 tree *next = &declarator;
8396 while (next && *next)
8399 switch (TREE_CODE (decl))
8403 next = &TREE_OPERAND (decl, 0);
8406 case BIT_NOT_EXPR: /* For C++ destructors! */
8408 tree name = TREE_OPERAND (decl, 0);
8409 tree rename = NULL_TREE;
8411 my_friendly_assert (flags == NO_SPECIAL, 152);
8413 return_type = return_dtor;
8414 if (TREE_CODE (name) == TYPE_DECL)
8415 TREE_OPERAND (decl, 0) = name = constructor_name (name);
8416 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153);
8417 if (ctype == NULL_TREE)
8419 if (current_class_type == NULL_TREE)
8421 cp_error (ec_destructors_must_be_member_functions);
8426 tree t = constructor_name (current_class_name);
8433 tree t = constructor_name (ctype);
8440 cp_error (ec_destructor_must_match_class_name,
8442 TREE_OPERAND (decl, 0) = rename;
8448 case ADDR_EXPR: /* C++ reference declaration */
8453 innermost_code = TREE_CODE (decl);
8454 next = &TREE_OPERAND (decl, 0);
8458 if (parmlist_is_exprlist (TREE_OPERAND (decl, 1)))
8460 /* This is actually a variable declaration using constructor
8461 syntax. We need to call start_decl and cp_finish_decl so we
8462 can get the variable initialized... */
8464 *next = TREE_OPERAND (decl, 0);
8465 init = TREE_OPERAND (decl, 1);
8467 decl = start_decl (declarator, declspecs, 1, NULL_TREE, NULL_TREE);
8468 /* Look for __unused__ attribute */
8469 if (TREE_USED (TREE_TYPE (decl)))
8470 TREE_USED (decl) = 1;
8471 finish_decl (decl, init, NULL_TREE);
8474 innermost_code = TREE_CODE (decl);
8475 if (decl_context == FIELD && ctype == NULL_TREE)
8476 ctype = current_class_type;
8478 && TREE_OPERAND (decl, 0)
8479 && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL
8480 && ((DECL_NAME (TREE_OPERAND (decl, 0))
8481 == constructor_name_full (ctype))
8482 || (DECL_NAME (TREE_OPERAND (decl, 0))
8483 == constructor_name (ctype)))))
8484 TREE_OPERAND (decl, 0) = constructor_name (ctype);
8485 next = &TREE_OPERAND (decl, 0);
8487 if (ctype != NULL_TREE
8488 && decl != NULL_TREE && flags != DTOR_FLAG
8489 && decl == constructor_name (ctype))
8491 return_type = return_ctor;
8492 ctor_return_type = ctype;
8497 case TEMPLATE_ID_EXPR:
8499 tree fns = TREE_OPERAND (decl, 0);
8501 if (TREE_CODE (fns) == LOOKUP_EXPR)
8502 fns = TREE_OPERAND (fns, 0);
8504 if (TREE_CODE (fns) == IDENTIFIER_NODE)
8506 else if (is_overloaded_fn (fns))
8507 dname = DECL_NAME (get_first_fn (fns));
8509 my_friendly_abort (0);
8513 case IDENTIFIER_NODE:
8514 if (TREE_CODE (decl) == IDENTIFIER_NODE)
8521 cp_error (ec_declaratorid_missing_using_reserved_word,
8523 name = IDENTIFIER_POINTER (dname);
8525 if (! IDENTIFIER_OPNAME_P (dname)
8526 /* GNU/Linux headers use '__op'. Arrgh. */
8527 || (IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname)))
8528 name = IDENTIFIER_POINTER (dname);
8531 if (IDENTIFIER_TYPENAME_P (dname))
8533 my_friendly_assert (flags == NO_SPECIAL, 154);
8534 flags = TYPENAME_FLAG;
8535 ctor_return_type = TREE_TYPE (dname);
8536 return_type = return_conversion;
8538 name = operator_name_string (dname);
8545 /* Perform error checking, and decide on a ctype. */
8546 tree cname = TREE_OPERAND (decl, 0);
8547 if (cname == NULL_TREE)
8549 else if (TREE_CODE (cname) == NAMESPACE_DECL)
8552 in_namespace = TREE_OPERAND (decl, 0);
8553 TREE_OPERAND (decl, 0) = NULL_TREE;
8555 else if (! is_aggr_type (cname, 1))
8556 TREE_OPERAND (decl, 0) = NULL_TREE;
8557 /* Must test TREE_OPERAND (decl, 1), in case user gives
8558 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
8559 else if (TREE_OPERAND (decl, 1)
8560 && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)
8562 else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM
8563 || TREE_CODE (cname) == TEMPLATE_TEMPLATE_PARM)
8565 cp_error (ec_is_not_a_valid_declarator, cname,
8566 TREE_OPERAND (decl, 1));
8567 cp_error (ec_perhaps_you_want_typename_to_make_it_a_type,
8568 cname, TREE_OPERAND (decl, 1));
8569 return void_type_node;
8571 else if (ctype == NULL_TREE)
8573 else if (TREE_COMPLEXITY (decl) == current_class_depth)
8574 TREE_OPERAND (decl, 0) = ctype;
8577 if (! UNIQUELY_DERIVED_FROM_P (cname, ctype))
8579 cp_error (ec_type_is_not_derived_from_type,
8581 TREE_OPERAND (decl, 0) = NULL_TREE;
8587 if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL
8588 && ((DECL_NAME (TREE_OPERAND (decl, 1))
8589 == constructor_name_full (ctype))
8590 || (DECL_NAME (TREE_OPERAND (decl, 1))
8591 == constructor_name (ctype))))
8592 TREE_OPERAND (decl, 1) = constructor_name (ctype);
8593 next = &TREE_OPERAND (decl, 1);
8597 if (TREE_CODE (decl) == IDENTIFIER_NODE
8598 && constructor_name (ctype) == decl)
8600 return_type = return_ctor;
8601 ctor_return_type = ctype;
8603 else if (TREE_CODE (decl) == BIT_NOT_EXPR
8604 && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
8605 && (constructor_name (ctype) == TREE_OPERAND (decl, 0)
8606 || constructor_name_full (ctype) == TREE_OPERAND (decl, 0)))
8608 return_type = return_dtor;
8609 ctor_return_type = ctype;
8611 TREE_OPERAND (decl, 0) = constructor_name (ctype);
8612 next = &TREE_OPERAND (decl, 0);
8623 /* Parse error puts this typespec where
8624 a declarator should go. */
8625 cp_error (ec_specified_as_declaratorid, DECL_NAME (decl));
8626 if (TREE_TYPE (decl) == current_class_type)
8627 cp_error (ec_perhaps_you_want_for_a_constructor,
8628 current_class_name);
8629 dname = DECL_NAME (decl);
8630 name = IDENTIFIER_POINTER (dname);
8632 /* Avoid giving two errors for this. */
8633 IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE;
8635 declspecs = temp_tree_cons (NULL_TREE, integer_type_node,
8642 cp_compiler_error (ec_as_declarator, decl);
8643 return 0; /* We used to do a 155 abort here. */
8650 /* A function definition's declarator must have the form of
8651 a function declarator. */
8653 if (funcdef_flag && innermost_code != CALL_EXPR)
8656 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
8657 && innermost_code != CALL_EXPR
8658 && ! (ctype && declspecs == NULL_TREE))
8660 cp_error (ec_declaration_of_as_nonfunction, dname);
8661 return void_type_node;
8664 /* Anything declared one level down from the top level
8665 must be one of the parameters of a function
8666 (because the body is at least two levels down). */
8668 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8669 by not allowing C++ class definitions to specify their parameters
8670 with xdecls (must be spec.d in the parmlist).
8672 Since we now wait to push a class scope until we are sure that
8673 we are in a legitimate method context, we must set oldcname
8674 explicitly (since current_class_name is not yet alive).
8676 We also want to avoid calling this a PARM if it is in a namespace. */
8678 if (decl_context == NORMAL && ! namespace_bindings_p ()
8679 && ! pseudo_global_level_p ())
8681 struct binding_level *b = current_binding_level;
8682 current_binding_level = b->level_chain;
8683 if (current_binding_level != 0 && toplevel_bindings_p ())
8684 decl_context = PARM;
8685 current_binding_level = b;
8688 /* Look through the decl specs and record which ones appear.
8689 Some typespecs are defined as built-in typenames.
8690 Others, the ones that are modifiers of other types,
8691 are represented by bits in SPECBITS: set the bits for
8692 the modifiers that appear. Storage class keywords are also in SPECBITS.
8694 If there is a typedef name or a type, store the type in TYPE.
8695 This includes builtin typedefs such as `int'.
8697 Set EXPLICIT_INT if the type is `int' or `char' and did not
8698 come from a user typedef.
8700 Set LONGLONG if `long' is mentioned twice.
8702 For C++, constructors and destructors have their own fast treatment. */
8704 for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
8709 /* Certain parse errors slip through. For example,
8710 `int class;' is not caught by the parser. Try
8711 weakly to recover here. */
8712 if (TREE_CODE (spec) != TREE_LIST)
8715 id = TREE_VALUE (spec);
8717 if (TREE_CODE (id) == IDENTIFIER_NODE)
8719 if (id == ridpointers[(int) RID_INT]
8720 || id == ridpointers[(int) RID_CHAR]
8721 || id == ridpointers[(int) RID_BOOL]
8722 || id == ridpointers[(int) RID_WCHAR])
8726 if (id == ridpointers[(int) RID_BOOL])
8727 cp_error (ec_bool_is_now_a_keyword);
8729 cp_error (ec_extraneous_ignored, id);
8733 if (id == ridpointers[(int) RID_INT])
8735 else if (id == ridpointers[(int) RID_CHAR])
8737 type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id));
8741 /* C++ aggregate types. */
8742 if (IDENTIFIER_HAS_TYPE_VALUE (id))
8745 cp_error (ec_multiple_declarations_and, type, id);
8747 type = IDENTIFIER_TYPE_VALUE (id);
8751 for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++)
8753 if (ridpointers[i] == id)
8755 if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits))
8757 if (pedantic && ! in_system_header && warn_long_long)
8758 cp_pedwarn (ec_does_not_support_long_long);
8760 cp_error (ec_long_long_long_is_too_long_for);
8764 else if (RIDBIT_SETP (i, specbits))
8765 cp_pedwarn (ec_duplicate_s, IDENTIFIER_POINTER (id));
8766 RIDBIT_SET (i, specbits);
8771 /* C++ aggregate types. */
8772 else if (TREE_CODE (id) == TYPE_DECL || TREE_CODE (id) == TEMPLATE_DECL)
8775 cp_error (ec_multiple_declarations_and, type,
8779 type = TREE_TYPE (id);
8780 TREE_VALUE (spec) = type;
8785 cp_error (ec_two_or_more_data_types_in_declaration_of_s, name);
8786 else if (TREE_CODE (id) == IDENTIFIER_NODE)
8788 register tree t = lookup_name (id, 1);
8789 if (!t || TREE_CODE (t) != TYPE_DECL)
8790 cp_error (ec_s_fails_to_be_a_typedef_or_built_in_type,
8791 IDENTIFIER_POINTER (id));
8794 type = TREE_TYPE (t);
8796 /* See the code below that used this. */
8797 decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id);
8802 else if (id != error_mark_node)
8803 /* Can't change CLASS nodes into RECORD nodes here! */
8809 typedef_type = type;
8811 /* No type at all: default to `int', and set DEFAULTED_INT
8812 because it was not a user-defined typedef.
8813 Except when we have a `typedef' inside a signature, in
8814 which case the type defaults to `unknown type' and is
8815 instantiated when assigning to a signature pointer or ref. */
8817 if (type == NULL_TREE
8818 && (RIDBIT_SETP (RID_SIGNED, specbits)
8819 || RIDBIT_SETP (RID_UNSIGNED, specbits)
8820 || RIDBIT_SETP (RID_LONG, specbits)
8821 || RIDBIT_SETP (RID_SHORT, specbits)))
8823 /* These imply 'int'. */
8824 type = integer_type_node;
8828 if (type == NULL_TREE)
8831 if (return_type == return_dtor)
8832 type = void_type_node;
8833 else if (return_type == return_ctor)
8834 type = build_pointer_type (ctor_return_type);
8835 else if (return_type == return_conversion)
8836 type = ctor_return_type;
8837 else if (current_class_type
8838 && IS_SIGNATURE (current_class_type)
8839 && RIDBIT_SETP (RID_TYPEDEF, specbits)
8840 && (decl_context == FIELD || decl_context == NORMAL))
8844 type = copy_node (opaque_type_node);
8850 if (warn_return_type
8851 && return_type == return_normal)
8852 /* Save warning until we know what is really going on. */
8853 warn_about_return_type = 1;
8855 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8856 cp_pedwarn (ec_forbids_typedef_which_does_not_specify_a_type);
8857 else if (innermost_code != CALL_EXPR || pedantic
8858 || (warn_return_type && return_type == return_normal))
8860 if (innermost_code == CALL_EXPR)
8861 cp_pedwarn (ec_returntype_of_defaults_to_int, dname);
8863 cp_pedwarn (ec_forbids_declaration_with_no_type,
8866 type = integer_type_node;
8869 else if (return_type == return_dtor)
8871 cp_error (ec_return_type_specification_for_destructor_invalid);
8872 type = void_type_node;
8874 else if (return_type == return_ctor)
8876 cp_error (ec_return_type_specification_for_constructor_invalid);
8877 type = build_pointer_type (ctor_return_type);
8879 else if (return_type == return_conversion)
8881 if (comptypes (type, ctor_return_type, 1) == 0)
8882 cp_error (ec_operator_declared_to_return,
8883 ctor_return_type, type);
8885 cp_pedwarn (ec_return_type_specified_for_operator,
8888 type = ctor_return_type;
8893 /* Now process the modifiers that were specified
8894 and check for invalid combinations. */
8896 /* Long double is a special combination. */
8898 if (RIDBIT_SETP (RID_LONG, specbits)
8899 && TYPE_MAIN_VARIANT (type) == double_type_node)
8901 RIDBIT_RESET (RID_LONG, specbits);
8902 type = build_type_variant (long_double_type_node, TYPE_READONLY (type),
8903 TYPE_VOLATILE (type));
8906 /* Check all other uses of type modifiers. */
8908 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8909 || RIDBIT_SETP (RID_SIGNED, specbits)
8910 || RIDBIT_SETP (RID_LONG, specbits)
8911 || RIDBIT_SETP (RID_SHORT, specbits))
8915 if (TREE_CODE (type) == REAL_TYPE)
8916 cp_error (ec_short_signed_or_unsigned_invalid_for_s, name);
8917 else if (TREE_CODE (type) != INTEGER_TYPE)
8918 cp_error (ec_long_short_signed_or_unsigned_invalid_for_s, name);
8919 else if (RIDBIT_SETP (RID_LONG, specbits)
8920 && RIDBIT_SETP (RID_SHORT, specbits))
8921 cp_error (ec_long_and_short_specified_together_for_s, name);
8922 else if ((RIDBIT_SETP (RID_LONG, specbits)
8923 || RIDBIT_SETP (RID_SHORT, specbits))
8925 cp_error (ec_long_or_short_specified_with_char_for_s, name);
8926 else if ((RIDBIT_SETP (RID_LONG, specbits)
8927 || RIDBIT_SETP (RID_SHORT, specbits))
8928 && TREE_CODE (type) == REAL_TYPE)
8929 cp_error (ec_long_or_short_specified_with_floating_type_for_s, name);
8930 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8931 && RIDBIT_SETP (RID_UNSIGNED, specbits))
8932 cp_error (ec_signed_and_unsigned_given_together_for_s, name);
8936 if (!explicit_int && !defaulted_int && !explicit_char && pedantic)
8938 cp_pedwarn (ec_long_short_signed_or_unsigned_used_invalidly_for_s,
8940 if (flag_pedantic_errors)
8945 /* Discard the type modifiers if they are invalid. */
8948 RIDBIT_RESET (RID_UNSIGNED, specbits);
8949 RIDBIT_RESET (RID_SIGNED, specbits);
8950 RIDBIT_RESET (RID_LONG, specbits);
8951 RIDBIT_RESET (RID_SHORT, specbits);
8956 if (RIDBIT_SETP (RID_COMPLEX, specbits)
8957 && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
8959 cp_error (ec_complex_invalid_for_s, name);
8960 RIDBIT_RESET (RID_COMPLEX, specbits);
8963 /* Decide whether an integer type is signed or not.
8964 Optionally treat bitfields as signed by default. */
8965 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8966 || (bitfield && ! flag_signed_bitfields
8967 && (explicit_int || defaulted_int || explicit_char
8968 /* A typedef for plain `int' without `signed'
8969 can be controlled just like plain `int'. */
8970 || ! (typedef_decl != NULL_TREE
8971 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
8972 && TREE_CODE (type) != ENUMERAL_TYPE
8973 && RIDBIT_NOTSETP (RID_SIGNED, specbits)))
8976 type = long_long_unsigned_type_node;
8977 else if (RIDBIT_SETP (RID_LONG, specbits))
8978 type = long_unsigned_type_node;
8979 else if (RIDBIT_SETP (RID_SHORT, specbits))
8980 type = short_unsigned_type_node;
8981 else if (type == char_type_node)
8982 type = unsigned_char_type_node;
8983 else if (typedef_decl)
8984 type = unsigned_type (type);
8986 type = unsigned_type_node;
8988 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8989 && type == char_type_node)
8990 type = signed_char_type_node;
8992 type = long_long_integer_type_node;
8993 else if (RIDBIT_SETP (RID_LONG, specbits))
8994 type = long_integer_type_node;
8995 else if (RIDBIT_SETP (RID_SHORT, specbits))
8996 type = short_integer_type_node;
8998 if (RIDBIT_SETP (RID_COMPLEX, specbits))
9000 /* If we just have "complex", it is equivalent to
9001 "complex double", but if any modifiers at all are specified it is
9002 the complex form of TYPE. E.g, "complex short" is
9003 "complex short int". */
9005 if (defaulted_int && ! longlong
9006 && ! (RIDBIT_SETP (RID_LONG, specbits)
9007 || RIDBIT_SETP (RID_SHORT, specbits)
9008 || RIDBIT_SETP (RID_SIGNED, specbits)
9009 || RIDBIT_SETP (RID_UNSIGNED, specbits)))
9010 type = complex_double_type_node;
9011 else if (type == integer_type_node)
9012 type = complex_integer_type_node;
9013 else if (type == float_type_node)
9014 type = complex_float_type_node;
9015 else if (type == double_type_node)
9016 type = complex_double_type_node;
9017 else if (type == long_double_type_node)
9018 type = complex_long_double_type_node;
9020 type = build_complex_type (type);
9023 if (return_type == return_conversion
9024 && (RIDBIT_SETP (RID_CONST, specbits)
9025 || RIDBIT_SETP (RID_VOLATILE, specbits)))
9026 cp_error (ec_operator_cannot_be_cvqualified,
9029 /* Set CONSTP if this declaration is `const', whether by
9030 explicit specification or via a typedef.
9031 Likewise for VOLATILEP. */
9033 constp = !! RIDBIT_SETP (RID_CONST, specbits) + TYPE_READONLY (type);
9034 volatilep = !! RIDBIT_SETP (RID_VOLATILE, specbits) + TYPE_VOLATILE (type);
9035 type = build_type_variant (type, 0, 0);
9037 inlinep = !! RIDBIT_SETP (RID_INLINE, specbits);
9038 virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits);
9039 RIDBIT_RESET (RID_VIRTUAL, specbits);
9040 explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0;
9041 RIDBIT_RESET (RID_EXPLICIT, specbits);
9043 if (RIDBIT_SETP (RID_STATIC, specbits))
9044 staticp = 1 + (decl_context == FIELD);
9046 if (virtualp && staticp == 2)
9048 cp_error (ec_member_cannot_be_declared_both_virtual_and_static,
9052 friendp = RIDBIT_SETP (RID_FRIEND, specbits);
9053 RIDBIT_RESET (RID_FRIEND, specbits);
9055 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9057 if (decl_context == PARM)
9059 cp_error (ec_nonmember_s_cannot_be_declared_mutable, name);
9060 RIDBIT_RESET (RID_MUTABLE, specbits);
9062 else if (friendp || decl_context == TYPENAME)
9064 cp_error (ec_nonobject_member_s_cannot_be_declared_mutable, name);
9065 RIDBIT_RESET (RID_MUTABLE, specbits);
9069 /* Warn if two storage classes are given. Default to `auto'. */
9071 if (RIDBIT_ANY_SET (specbits))
9073 if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++;
9074 if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++;
9075 if (decl_context == PARM && nclasses > 0)
9076 cp_error (ec_storage_class_specifiers_invalid_in_parameter_declarations);
9077 if (RIDBIT_SETP (RID_TYPEDEF, specbits))
9079 if (decl_context == PARM)
9080 cp_error (ec_typedef_declaration_invalid_in_parameter_declaration);
9083 if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++;
9084 if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++;
9087 /* Give error if `virtual' is used outside of class declaration. */
9089 && (current_class_name == NULL_TREE || decl_context != FIELD))
9091 cp_error (ec_virtual_outside_class_declaration);
9094 if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits))
9096 cp_error (ec_only_members_can_be_declared_mutable);
9097 RIDBIT_RESET (RID_MUTABLE, specbits);
9100 /* Static anonymous unions are dealt with here. */
9101 if (staticp && decl_context == TYPENAME
9102 && TREE_CODE (declspecs) == TREE_LIST
9103 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs)))
9104 decl_context = FIELD;
9106 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9107 is used in a signature member function declaration. */
9108 if (decl_context == FIELD
9109 && IS_SIGNATURE (current_class_type)
9110 && RIDBIT_NOTSETP (RID_TYPEDEF, specbits))
9114 cp_error (ec_const_specified_for_signature_member_function_s, name);
9119 cp_error (ec_volatile_specified_for_signature_member_function_s,
9125 cp_error (ec_inline_specified_for_signature_member_function_s, name);
9126 /* Later, we'll make signature member functions inline. */
9131 cp_error (ec_friend_declaration_in_signature_definition);
9136 cp_error (ec_virtual_specified_for_signature_member_function_s,
9138 /* Later, we'll make signature member functions virtual. */
9143 /* Warn about storage classes that are invalid for certain
9144 kinds of declarations (parameters, typenames, etc.). */
9147 cp_error (ec_multiple_storage_classes_in_declaration_of_s, name);
9148 else if (decl_context != NORMAL && nclasses > 0)
9150 if ((decl_context == PARM || decl_context == CATCHPARM)
9151 && (RIDBIT_SETP (RID_REGISTER, specbits)
9152 || RIDBIT_SETP (RID_AUTO, specbits)))
9154 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
9156 else if (decl_context == FIELD
9157 && ! IS_SIGNATURE (current_class_type)
9158 /* C++ allows static class elements */
9159 && RIDBIT_SETP (RID_STATIC, specbits))
9160 /* C++ also allows inlines and signed and unsigned elements,
9161 but in those cases we don't come in here. */
9165 if (decl_context == FIELD)
9167 tree tmp = NULL_TREE;
9168 register int op = 0;
9172 /* Avoid trying to get an operand off an identifier node. */
9173 if (TREE_CODE (declarator) == IDENTIFIER_NODE)
9176 tmp = TREE_OPERAND (declarator, 0);
9177 op = IDENTIFIER_OPNAME_P (tmp);
9179 cp_error (ec_storage_class_specified_for_s_s,
9180 IS_SIGNATURE (current_class_type)
9182 ? "signature member operator"
9183 : "signature member function")
9184 : (op ? "member operator" : "field"),
9185 op ? operator_name_string (tmp) : name);
9188 error (((decl_context == PARM || decl_context == CATCHPARM)
9189 ? "storage class specified for parameter `%s'"
9190 : "storage class specified for typename"), name);
9191 RIDBIT_RESET (RID_REGISTER, specbits);
9192 RIDBIT_RESET (RID_AUTO, specbits);
9193 RIDBIT_RESET (RID_EXTERN, specbits);
9195 if (decl_context == FIELD && IS_SIGNATURE (current_class_type))
9197 RIDBIT_RESET (RID_STATIC, specbits);
9202 else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag)
9204 if (toplevel_bindings_p ())
9206 /* It's common practice (and completely valid) to have a const
9207 be initialized and declared extern. */
9209 cp_warning (ec_s_initialized_and_declared_extern, name);
9212 cp_error (ec_s_has_both_extern_and_initializer, name);
9214 else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag
9215 && ! toplevel_bindings_p ())
9216 cp_error (ec_nested_function_s_declared_extern, name);
9217 else if (toplevel_bindings_p ())
9219 if (RIDBIT_SETP (RID_AUTO, specbits))
9220 cp_error (ec_toplevel_declaration_of_s_specifies_auto, name);
9223 if (nclasses > 0 && friendp)
9224 cp_error (ec_storage_class_specifiers_invalid_in_friend_function_declarations);
9226 /* Now figure out the structure of the declarator proper.
9227 Descend through it, creating more complex types, until we reach
9228 the declared identifier (or NULL_TREE, in an absolute declarator). */
9230 while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE
9231 && TREE_CODE (declarator) != TEMPLATE_ID_EXPR)
9233 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9234 an INDIRECT_REF (for *...),
9235 a CALL_EXPR (for ...(...)),
9236 an identifier (for the name being declared)
9237 or a null pointer (for the place in an absolute declarator
9238 where the name was omitted).
9239 For the last two cases, we have just exited the loop.
9241 For C++ it could also be
9242 a SCOPE_REF (for class :: ...). In this case, we have converted
9243 sensible names to types, and those are the values we use to
9244 qualify the member name.
9245 an ADDR_EXPR (for &...),
9246 a BIT_NOT_EXPR (for destructors)
9248 At this point, TYPE is the type of elements of an array,
9249 or for a function to return, or for a pointer to point to.
9250 After this sequence of ifs, TYPE is the type of the
9251 array or function or pointer, and DECLARATOR has had its
9252 outermost layer removed. */
9254 if (type == error_mark_node)
9256 if (TREE_CODE (declarator) == SCOPE_REF)
9257 declarator = TREE_OPERAND (declarator, 1);
9259 declarator = TREE_OPERAND (declarator, 0);
9262 if (quals != NULL_TREE
9263 && (declarator == NULL_TREE
9264 || TREE_CODE (declarator) != SCOPE_REF))
9266 if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE)
9267 ctype = TYPE_METHOD_BASETYPE (type);
9268 if (ctype != NULL_TREE)
9270 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
9271 ctype = grok_method_quals (ctype, dummy, quals);
9272 type = TREE_TYPE (dummy);
9276 switch (TREE_CODE (declarator))
9280 register tree itype = NULL_TREE;
9281 register tree size = TREE_OPERAND (declarator, 1);
9282 /* The index is a signed object `sizetype' bits wide. */
9283 tree index_type = signed_type (sizetype);
9285 declarator = TREE_OPERAND (declarator, 0);
9287 /* Check for some types that there cannot be arrays of. */
9289 if (TREE_CODE (type) == VOID_TYPE)
9291 cp_error (ec_declaration_of_as_array_of_voids, dname);
9292 type = error_mark_node;
9295 if (TREE_CODE (type) == FUNCTION_TYPE)
9297 cp_error (ec_declaration_of_as_array_of_functions, dname);
9298 type = error_mark_node;
9301 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9302 you can't have arrays of references. If we allowed them,
9303 then we'd be saying x[i] is valid for an array x, but
9304 then you'd have to ask: what does `*(x + i)' mean? */
9305 if (TREE_CODE (type) == REFERENCE_TYPE)
9307 if (decl_context == TYPENAME)
9308 cp_error (ec_cannot_make_arrays_of_references);
9310 cp_error (ec_declaration_of_as_array_of_references,
9312 type = error_mark_node;
9315 if (TREE_CODE (type) == OFFSET_TYPE)
9317 cp_error (ec_declaration_of_as_array_of_data_members,
9319 type = error_mark_node;
9322 if (TREE_CODE (type) == METHOD_TYPE)
9324 cp_error (ec_declaration_of_as_array_of_function_members,
9326 type = error_mark_node;
9329 if (size == error_mark_node)
9330 type = error_mark_node;
9332 if (type == error_mark_node)
9337 /* Must suspend_momentary here because the index
9338 type may need to live until the end of the function.
9339 For example, it is used in the declaration of a
9340 variable which requires destructing at the end of
9341 the function; then build_vec_delete will need this
9343 int yes = suspend_momentary ();
9344 /* Might be a cast. */
9345 if (TREE_CODE (size) == NOP_EXPR
9346 && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0)))
9347 size = TREE_OPERAND (size, 0);
9349 /* If this involves a template parameter, it'll be
9350 constant, but we don't know what the value is yet. */
9351 if (processing_template_decl)
9353 itype = make_node (INTEGER_TYPE);
9354 TYPE_MIN_VALUE (itype) = size_zero_node;
9355 TYPE_MAX_VALUE (itype) = build_min
9356 (MINUS_EXPR, sizetype, size, integer_one_node);
9357 goto dont_grok_size;
9360 if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
9361 && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE)
9363 cp_error (ec_size_of_array_has_noninteger_type,
9365 size = integer_one_node;
9367 if (TREE_READONLY_DECL_P (size))
9368 size = decl_constant_value (size);
9369 if (pedantic && integer_zerop (size))
9370 cp_pedwarn (ec_forbids_zerosize_array, dname);
9371 if (TREE_CONSTANT (size))
9373 int old_flag_pedantic_errors = flag_pedantic_errors;
9374 int old_pedantic = pedantic;
9375 pedantic = flag_pedantic_errors = 1;
9376 /* Always give overflow errors on array subscripts. */
9377 constant_expression_warning (size);
9378 pedantic = old_pedantic;
9379 flag_pedantic_errors = old_flag_pedantic_errors;
9380 if (INT_CST_LT (size, integer_zero_node))
9382 cp_error (ec_size_of_array_is_negative, dname);
9383 size = integer_one_node;
9391 cp_pedwarn (ec_forbids_variablesize_array_name,
9394 cp_pedwarn (ec_forbids_variablesize_array);
9399 = fold (build_binary_op (MINUS_EXPR,
9400 cp_convert (index_type, size),
9401 cp_convert (index_type,
9402 integer_one_node), 1));
9403 if (! TREE_CONSTANT (itype))
9404 itype = variable_size (itype);
9405 else if (TREE_OVERFLOW (itype))
9407 cp_error (ec_overflow_in_array_dimension);
9408 TREE_OVERFLOW (itype) = 0;
9411 /* If we're a parm, we need to have a permanent type so
9412 mangling checks for re-use will work right. If both the
9413 element and index types are permanent, the array type
9415 if (decl_context == PARM
9416 && allocation_temporary_p () && TREE_PERMANENT (type))
9418 push_obstacks (&permanent_obstack, &permanent_obstack);
9419 itype = build_index_type (itype);
9423 itype = build_index_type (itype);
9426 resume_momentary (yes);
9429 /* Build the array type itself, then merge any constancy or
9430 volatility into the target type. We must do it in this order
9431 to ensure that the TYPE_MAIN_VARIANT field of the array type
9432 is set correctly. */
9434 type = build_cplus_array_type (type, itype);
9435 if (constp || volatilep)
9436 type = cp_build_type_variant (type, constp, volatilep);
9446 tree inner_parms = TREE_OPERAND (declarator, 1);
9447 tree inner_decl = TREE_OPERAND (declarator, 0);
9449 /* Declaring a function type.
9450 Make sure we have a valid type for the function to return. */
9452 /* Is this an error? Should they be merged into TYPE here? */
9453 if (pedantic && (constp || volatilep))
9454 cp_pedwarn (ec_function_declared_to_return_const_or_volatile_result);
9456 /* Merge any constancy or volatility into the function return
9459 if (constp || volatilep)
9461 type = cp_build_type_variant (type, constp, volatilep);
9462 if (IS_AGGR_TYPE (type))
9463 build_pointer_type (type);
9469 /* Warn about some types functions can't return. */
9471 if (TREE_CODE (type) == FUNCTION_TYPE)
9473 cp_error (ec_s_declared_as_function_returning_a_function, name);
9474 type = integer_type_node;
9476 if (TREE_CODE (type) == ARRAY_TYPE)
9478 cp_error (ec_s_declared_as_function_returning_an_array, name);
9479 type = integer_type_node;
9482 if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF)
9483 inner_decl = TREE_OPERAND (inner_decl, 1);
9485 if (inner_decl && TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR)
9488 /* Pick up type qualifiers which should be applied to `this'. */
9489 quals = TREE_OPERAND (declarator, 2);
9491 /* Pick up the exception specifications. */
9492 raises = TREE_TYPE (declarator);
9494 /* Say it's a definition only for the CALL_EXPR
9495 closest to the identifier. */
9498 && (TREE_CODE (inner_decl) == IDENTIFIER_NODE
9499 || TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR
9500 || TREE_CODE (inner_decl) == BIT_NOT_EXPR);
9502 if (ctype == NULL_TREE
9503 && decl_context == FIELD
9505 && (friendp == 0 || dname == current_class_name))
9506 ctype = current_class_type;
9508 if (ctype && return_type == return_conversion)
9509 TYPE_HAS_CONVERSION (ctype) = 1;
9510 if (ctype && constructor_name (ctype) == dname)
9512 /* We are within a class's scope. If our declarator name
9513 is the same as the class name, and we are defining
9514 a function, then it is a constructor/destructor, and
9515 therefore returns a void type. */
9517 if (flags == DTOR_FLAG)
9519 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
9520 not be declared const or volatile. A destructor
9521 may not be static. */
9523 cp_error (ec_destructor_cannot_be_static_member_function);
9526 cp_error (ec_destructors_cannot_be_declared_const_or_volatile);
9527 return void_type_node;
9529 if (decl_context == FIELD)
9531 if (! member_function_or_else (ctype, current_class_type,
9532 "destructor for alien class `%s' cannot be a member"))
9533 return void_type_node;
9536 else /* It's a constructor. */
9540 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
9541 not be declared const or volatile. A constructor may
9542 not be virtual. A constructor may not be static. */
9544 cp_error (ec_constructor_cannot_be_static_member_function);
9547 cp_pedwarn (ec_constructors_cannot_be_declared_virtual);
9552 cp_error (ec_constructors_cannot_be_declared_const_or_volatile);
9553 return void_type_node;
9556 RID_BIT_TYPE tmp_bits;
9557 bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE));
9558 RIDBIT_RESET (RID_INLINE, tmp_bits);
9559 RIDBIT_RESET (RID_STATIC, tmp_bits);
9560 if (RIDBIT_ANY_SET (tmp_bits))
9561 cp_error (ec_return_value_type_specifier_for_constructor_ignored);
9563 type = build_pointer_type (ctype);
9564 if (decl_context == FIELD
9565 && IS_SIGNATURE (current_class_type))
9567 cp_error (ec_constructor_not_allowed_in_signature);
9568 return void_type_node;
9570 else if (decl_context == FIELD)
9572 if (! member_function_or_else (ctype, current_class_type,
9573 "constructor for alien class `%s' cannot be member"))
9574 return void_type_node;
9575 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
9576 if (return_type != return_ctor)
9580 if (decl_context == FIELD)
9586 cp_error (ec_cant_initialize_friend_function_s, name);
9589 /* Cannot be both friend and virtual. */
9590 cp_error (ec_virtual_functions_cannot_be_friends);
9591 RIDBIT_RESET (RID_FRIEND, specbits);
9594 if (decl_context == NORMAL)
9595 cp_error (ec_friend_declaration_not_in_class_definition);
9596 if (current_function_decl && funcdef_flag)
9597 cp_error (ec_cant_define_friend_function_s_in_a_local_class_definition,
9601 /* Construct the function type and go to the next
9602 inner layer of declarator. */
9604 declarator = TREE_OPERAND (declarator, 0);
9606 /* FIXME: This is where default args should be fully
9609 arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0);
9613 /* Get past destructors, etc.
9614 We know we have one because FLAGS will be non-zero.
9616 Complain about improper parameter lists here. */
9617 if (TREE_CODE (declarator) == BIT_NOT_EXPR)
9619 declarator = TREE_OPERAND (declarator, 0);
9621 if (strict_prototype == 0 && arg_types == NULL_TREE)
9622 arg_types = void_list_node;
9623 else if (arg_types == NULL_TREE
9624 || arg_types != void_list_node)
9626 cp_error (ec_destructors_cannot_be_specified_with_parameters);
9627 arg_types = void_list_node;
9632 /* ANSI says that `const int foo ();'
9633 does not make the function foo const. */
9634 type = build_function_type (type, arg_types);
9638 for (t = arg_types; t; t = TREE_CHAIN (t))
9639 if (TREE_PURPOSE (t)
9640 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
9642 add_defarg_fn (type);
9651 /* Filter out pointers-to-references and references-to-references.
9652 We can get these if a TYPE_DECL is used. */
9654 if (TREE_CODE (type) == REFERENCE_TYPE)
9656 cp_error (ec_cannot_declare_s_to_references,
9657 TREE_CODE (declarator) == ADDR_EXPR
9658 ? "references" : "pointers");
9659 declarator = TREE_OPERAND (declarator, 0);
9663 if (TREE_CODE (type) == OFFSET_TYPE
9664 && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE
9665 || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE))
9667 cp_error (ec_cannot_declare_pointer_to_member,
9669 type = TREE_TYPE (type);
9672 /* Merge any constancy or volatility into the target type
9675 if (constp || volatilep)
9677 /* A const or volatile signature pointer/reference is
9678 pointing to a const or volatile object, i.e., the
9679 `optr' is const or volatile, respectively, not the
9680 signature pointer/reference itself. */
9681 if (! IS_SIGNATURE (type))
9683 type = cp_build_type_variant (type, constp, volatilep);
9684 if (IS_AGGR_TYPE (type))
9685 build_pointer_type (type);
9691 if (IS_SIGNATURE (type))
9693 if (TREE_CODE (declarator) == ADDR_EXPR)
9695 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
9696 && TYPE_SIZE (type))
9697 cp_warning (ec_empty_signature_used_in_signature_reference_declaration,
9700 type = build_signature_reference_type (type,
9703 sorry ("signature reference");
9709 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
9710 && TYPE_SIZE (type))
9711 cp_warning (ec_empty_signature_used_in_signature_pointer_declaration,
9713 type = build_signature_pointer_type (type,
9719 else if (TREE_CODE (declarator) == ADDR_EXPR)
9721 if (TREE_CODE (type) == FUNCTION_TYPE)
9723 cp_error (ec_cannot_declare_references_to_functions_use_pointer_to_function_instead);
9724 type = build_pointer_type (type);
9728 if (TREE_CODE (type) == VOID_TYPE)
9729 cp_error (ec_invalid_type_void);
9731 type = build_reference_type (type);
9734 else if (TREE_CODE (type) == METHOD_TYPE)
9736 type = build_ptrmemfunc_type (build_pointer_type (type));
9739 type = build_pointer_type (type);
9741 /* Process a list of type modifier keywords (such as
9742 const or volatile) that were given inside the `*' or `&'. */
9744 if (TREE_TYPE (declarator))
9746 register tree typemodlist;
9748 for (typemodlist = TREE_TYPE (declarator); typemodlist;
9749 typemodlist = TREE_CHAIN (typemodlist))
9751 if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST])
9753 else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE])
9758 cp_error (ec_invalid_type_modifier_within_s_declarator,
9759 TREE_CODE (declarator) == ADDR_EXPR
9760 ? "reference" : "pointer");
9764 cp_pedwarn (ec_duplicate_const);
9766 cp_pedwarn (ec_duplicate_volatile);
9767 if (TREE_CODE (declarator) == ADDR_EXPR
9768 && (constp || volatilep))
9771 cp_pedwarn (ec_discarding_const_applied_to_a_reference);
9773 cp_pedwarn (ec_discarding_volatile_applied_to_a_reference);
9774 constp = volatilep = 0;
9777 declarator = TREE_OPERAND (declarator, 0);
9783 /* We have converted type names to NULL_TREE if the
9784 name was bogus, or to a _TYPE node, if not.
9786 The variable CTYPE holds the type we will ultimately
9787 resolve to. The code here just needs to build
9788 up appropriate member types. */
9789 tree sname = TREE_OPERAND (declarator, 1);
9792 /* Destructors can have their visibilities changed as well. */
9793 if (TREE_CODE (sname) == BIT_NOT_EXPR)
9794 sname = TREE_OPERAND (sname, 0);
9796 if (TREE_COMPLEXITY (declarator) == 0)
9797 /* This needs to be here, in case we are called
9798 multiple times. */ ;
9799 else if (TREE_COMPLEXITY (declarator) == -1)
9800 /* Namespace member. */
9801 pop_decl_namespace ();
9802 else if (friendp && (TREE_COMPLEXITY (declarator) < 2))
9803 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
9804 else if (! IS_AGGR_TYPE_CODE
9805 (TREE_CODE (TREE_OPERAND (declarator, 0))))
9807 else if (TREE_COMPLEXITY (declarator) == current_class_depth)
9809 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9810 that refer to ctype. They couldn't be resolved earlier
9811 because we hadn't pushed into the class yet.
9812 Example: resolve 'B<T>::type' in
9813 'B<typename B<T>::type> B<T>::f () { }'. */
9814 if (current_template_parms
9815 && uses_template_parms (type)
9816 && uses_template_parms (current_class_type))
9818 tree args = current_template_args ();
9819 type = tsubst (type, args, NULL_TREE);
9822 /* This pop_nested_class corresponds to the
9823 push_nested_class used to push into class scope for
9824 parsing the argument list of a function decl, in
9826 pop_nested_class (1);
9827 TREE_COMPLEXITY (declarator) = current_class_depth;
9830 my_friendly_abort (16);
9832 if (TREE_OPERAND (declarator, 0) == NULL_TREE)
9834 /* We had a reference to a global decl, or
9835 perhaps we were given a non-aggregate typedef,
9836 in which case we cleared this out, and should just
9837 keep going as though it wasn't there. */
9841 ctype = TREE_OPERAND (declarator, 0);
9844 while (t != NULL_TREE)
9846 if (CLASSTYPE_TEMPLATE_INFO (t) &&
9847 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t))
9848 template_count += 1;
9849 t = TYPE_MAIN_DECL (t);
9850 if (DECL_LANG_SPECIFIC (t))
9851 t = DECL_CLASS_CONTEXT (t);
9856 if (sname == NULL_TREE)
9859 if (TREE_CODE (sname) == IDENTIFIER_NODE)
9861 /* This is the `standard' use of the scoping operator:
9862 basetype :: member . */
9864 if (ctype == current_class_type)
9870 Is this ill-formed? */
9873 cp_pedwarn (ec_extra_qualification_on_member_s_ignored,
9876 else if (TREE_CODE (type) == FUNCTION_TYPE)
9878 if (current_class_type == NULL_TREE
9880 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9881 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9884 cp_error (ec_cannot_declare_member_function_s_within,
9885 ctype, name, current_class_type);
9886 return void_type_node;
9889 else if (RIDBIT_SETP (RID_TYPEDEF, specbits)
9890 || TYPE_SIZE (complete_type (ctype)) != NULL_TREE)
9892 /* Have to move this code elsewhere in this function.
9893 this code is used for i.e., typedef int A::M; M *pm;
9895 It is? How? jason 10/2/94 */
9897 if (current_class_type)
9899 cp_error (ec_cannot_declare_member_s_within,
9900 ctype, name, current_class_type);
9901 return void_type_node;
9903 type = build_offset_type (ctype, type);
9905 else if (uses_template_parms (ctype))
9907 if (TREE_CODE (type) == FUNCTION_TYPE)
9909 = build_cplus_method_type (build_type_variant (ctype,
9913 TYPE_ARG_TYPES (type));
9917 cp_error (ec_structure_not_yet_defined, ctype);
9918 return error_mark_node;
9923 else if (TREE_CODE (sname) == SCOPE_REF)
9924 my_friendly_abort (17);
9928 declarator = TREE_OPERAND (declarator, 1);
9929 if (declarator && TREE_CODE (declarator) == CALL_EXPR)
9930 /* In this case, we will deal with it later. */
9934 if (TREE_CODE (type) == FUNCTION_TYPE)
9935 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), TREE_TYPE (type), TYPE_ARG_TYPES (type));
9937 type = build_offset_type (ctype, type);
9944 declarator = TREE_OPERAND (declarator, 0);
9950 declarator = NULL_TREE;
9954 declarator = NULL_TREE;
9958 my_friendly_abort (158);
9964 cp_error (ec_only_constructors_can_be_declared_explicit);
9968 /* Now TYPE has the actual type. */
9970 /* If this is declaring a typedef name, return a TYPE_DECL. */
9972 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9976 cp_error (ec_const_s_cannot_be_declared_mutable, name);
9977 RIDBIT_RESET (RID_MUTABLE, specbits);
9981 cp_error (ec_static_s_cannot_be_declared_mutable, name);
9982 RIDBIT_RESET (RID_MUTABLE, specbits);
9986 if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME)
9990 /* Note that the grammar rejects storage classes
9991 in typenames, fields or parameters. */
9992 if (constp || volatilep)
9993 type = cp_build_type_variant (type, constp, volatilep);
9994 if (current_lang_name == lang_name_java)
9995 TYPE_FOR_JAVA (type) = 1;
9997 if (decl_context == FIELD)
9999 if (declarator == current_class_name)
10000 cp_pedwarn (ec_forbids_nested_type_with_same_name_as_enclosing_class,
10002 decl = build_lang_decl (TYPE_DECL, declarator, type);
10003 if (IS_SIGNATURE (current_class_type) && opaque_typedef)
10004 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1;
10008 /* Make sure this typedef lives as long as its type,
10009 since it might be used as a template parameter. */
10010 if (type != error_mark_node)
10011 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
10012 decl = build_decl (TYPE_DECL, declarator, type);
10013 if (type != error_mark_node)
10017 /* If the user declares "struct {...} foo" then `foo' will have
10018 an anonymous name. Fill that name in now. Nothing can
10019 refer to it, so nothing needs know about the name change.
10020 The TYPE_NAME field was filled in by build_struct_xref. */
10021 if (type != error_mark_node
10022 && TYPE_NAME (type)
10023 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
10024 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
10026 /* For anonymous structs that are cv-qualified, need to use
10027 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10028 type not referenced after this block, don't bother
10029 resetting type to original type, ie. TREE_TYPE (decl). */
10030 type = TYPE_MAIN_VARIANT (type);
10032 /* Replace the anonymous name with the real name everywhere. */
10033 lookup_tag_reverse (type, declarator);
10034 TYPE_NAME (type) = decl;
10036 if (TYPE_LANG_SPECIFIC (type))
10037 TYPE_WAS_ANONYMOUS (type) = 1;
10039 /* XXX Temporarily set the scope.
10040 When returning, start_decl expects it as NULL_TREE,
10041 and will then then set it using pushdecl. */
10042 my_friendly_assert (DECL_CONTEXT (decl) == NULL_TREE, 980404);
10043 if (current_class_type)
10044 DECL_CONTEXT (decl) = current_class_type;
10046 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
10048 DECL_ASSEMBLER_NAME (decl) = DECL_NAME (decl);
10049 DECL_ASSEMBLER_NAME (decl)
10050 = get_identifier (build_overload_name (type, 1, 1));
10051 DECL_CONTEXT (decl) = NULL_TREE;
10053 /* FIXME remangle member functions; member functions of a
10054 type with external linkage have external linkage. */
10057 if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE)
10059 cp_error_at (ec_typedef_name_may_not_be_classqualified, decl);
10064 if (ctype == NULL_TREE)
10066 if (TREE_CODE (type) != METHOD_TYPE)
10067 cp_error_at (ec_invalid_type_qualifier_for_nonmethod_type, decl);
10069 ctype = TYPE_METHOD_BASETYPE (type);
10071 if (ctype != NULL_TREE)
10072 grok_method_quals (ctype, decl, quals);
10075 if (RIDBIT_SETP (RID_SIGNED, specbits)
10076 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
10077 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
10079 if (RIDBIT_SETP (RID_MUTABLE, specbits))
10081 cp_error (ec_nonobject_member_s_cannot_be_declared_mutable, name);
10084 bad_specifiers (decl, "type", virtualp, quals != NULL_TREE,
10085 inlinep, friendp, raises != NULL_TREE);
10088 cp_error (ec_typedef_declaration_includes_an_initializer);
10093 /* Detect the case of an array type of unspecified size
10094 which came, as such, direct from a typedef name.
10095 We must copy the type, so that each identifier gets
10096 a distinct type, so that each identifier's size can be
10097 controlled separately by its own initializer. */
10099 if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE
10100 && TYPE_DOMAIN (type) == NULL_TREE)
10102 type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type));
10105 /* If this is a type name (such as, in a cast or sizeof),
10106 compute the type and return it now. */
10108 if (decl_context == TYPENAME)
10110 /* Note that the grammar rejects storage classes
10111 in typenames, fields or parameters. */
10112 if (constp || volatilep)
10114 if (IS_SIGNATURE (type))
10115 cp_error (ec_const_or_volatile_specified_with_signature_type);
10117 type = cp_build_type_variant (type, constp, volatilep);
10120 /* Special case: "friend class foo" looks like a TYPENAME context. */
10125 cp_error (ec_volatile_specified_for_friend_class_declaration);
10130 cp_error (ec_inline_specified_for_friend_class_declaration);
10134 /* Only try to do this stuff if we didn't already give up. */
10135 if (type != integer_type_node)
10137 /* A friendly class? */
10138 if (current_class_type)
10139 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type));
10141 cp_error (ec_trying_to_make_class_s_a_friend_of_global_scope,
10142 TYPE_NAME_STRING (type));
10143 type = void_type_node;
10148 tree dummy = build_decl (TYPE_DECL, declarator, type);
10149 if (ctype == NULL_TREE)
10151 my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159);
10152 ctype = TYPE_METHOD_BASETYPE (type);
10154 grok_method_quals (ctype, dummy, quals);
10155 type = TREE_TYPE (dummy);
10160 else if (declarator == NULL_TREE && decl_context != PARM
10161 && decl_context != CATCHPARM
10162 && TREE_CODE (type) != UNION_TYPE
10165 cp_error (ec_abstract_declarator_type_used_as_declaration, type);
10166 declarator = make_anon_name ();
10169 /* `void' at top level (not within pointer)
10170 is allowed only in typedefs or type names.
10171 We don't complain about parms either, but that is because
10172 a better error message can be made later. */
10174 if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM)
10177 cp_error (ec_unnamed_variable_or_field_declared_void);
10178 else if (TREE_CODE (declarator) == IDENTIFIER_NODE)
10180 if (IDENTIFIER_OPNAME_P (declarator))
10181 my_friendly_abort (356);
10183 cp_error (ec_variable_or_field_s_declared_void, name);
10186 cp_error (ec_variable_or_field_declared_void);
10187 type = integer_type_node;
10190 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10191 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10194 register tree decl;
10196 if (decl_context == PARM)
10198 if (ctype || in_namespace)
10199 cp_error (ec_cannot_use_in_parameter_declaration);
10201 /* A parameter declared as an array of T is really a pointer to T.
10202 One declared as a function is really a pointer to a function.
10203 One declared as a member is really a pointer to member. */
10205 if (TREE_CODE (type) == ARRAY_TYPE)
10207 /* Transfer const-ness of array into that of type pointed to. */
10208 type = build_pointer_type
10209 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
10210 volatilep = constp = 0;
10212 else if (TREE_CODE (type) == FUNCTION_TYPE)
10213 type = build_pointer_type (type);
10214 else if (TREE_CODE (type) == OFFSET_TYPE)
10215 type = build_pointer_type (type);
10216 else if (TREE_CODE (type) == VOID_TYPE && declarator)
10218 cp_error (ec_declaration_of_s_as_void, name);
10222 decl = build_decl (PARM_DECL, declarator, complete_type (type));
10224 bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE,
10225 inlinep, friendp, raises != NULL_TREE);
10226 if (current_class_type
10227 && IS_SIGNATURE (current_class_type))
10230 cp_error (ec_parameter_of_signature_member_function_declared_inline);
10231 if (RIDBIT_SETP (RID_AUTO, specbits))
10232 cp_error (ec_parameter_of_signature_member_function_declared_auto);
10233 if (RIDBIT_SETP (RID_REGISTER, specbits))
10234 cp_error (ec_parameter_of_signature_member_function_declared_register);
10237 /* Compute the type actually passed in the parmlist,
10238 for the case where there is no prototype.
10239 (For example, shorts and chars are passed as ints.)
10240 When there is a prototype, this is overridden later. */
10242 DECL_ARG_TYPE (decl) = type_promotes_to (type);
10244 else if (decl_context == FIELD)
10246 if (type == error_mark_node)
10248 /* Happens when declaring arrays of sizes which
10249 are error_mark_node, for example. */
10252 else if (in_namespace)
10254 /* Something like struct S { int N::j; }; */
10255 cp_error (ec_invalid_use_of_scope);
10258 else if (TREE_CODE (type) == FUNCTION_TYPE)
10261 tree function_context;
10263 /* We catch the others as conflicts with the builtin
10265 if (friendp && declarator == ridpointers[(int) RID_SIGNED])
10267 cp_error (ec_function_cannot_be_declared_friend,
10274 if (ctype == NULL_TREE)
10275 ctype = current_class_type;
10277 if (ctype == NULL_TREE)
10279 cp_error (ec_cant_make_into_a_method_not_in_a_class,
10281 return void_type_node;
10284 /* ``A union may [ ... ] not [ have ] virtual functions.''
10286 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
10288 cp_error (ec_function_declared_virtual_inside_a_union,
10290 return void_type_node;
10293 if (declarator == ansi_opname[(int) NEW_EXPR]
10294 || declarator == ansi_opname[(int) VEC_NEW_EXPR]
10295 || declarator == ansi_opname[(int) DELETE_EXPR]
10296 || declarator == ansi_opname[(int) VEC_DELETE_EXPR])
10300 cp_error (ec_cannot_be_declared_virtual_since_it_is_always_static,
10305 else if (staticp < 2)
10306 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
10307 TREE_TYPE (type), TYPE_ARG_TYPES (type));
10310 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10311 function_context = (ctype != NULL_TREE) ?
10312 hack_decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE;
10313 publicp = (! friendp || ! staticp)
10314 && function_context == NULL_TREE;
10315 decl = grokfndecl (ctype, type,
10316 TREE_CODE (declarator) != TEMPLATE_ID_EXPR
10317 ? declarator : dname,
10319 virtualp, flags, quals, raises, attrlist,
10320 friendp ? -1 : 0, friendp, publicp, inlinep,
10321 funcdef_flag, template_count, in_namespace);
10322 if (decl == NULL_TREE)
10325 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10326 /* The decl and setting of decl_machine_attr is also turned off. */
10327 decl = build_decl_attribute_variant (decl, decl_machine_attr);
10330 if (explicitp == 2)
10331 DECL_NONCONVERTING_P (decl) = 1;
10333 else if (TREE_CODE (type) == METHOD_TYPE)
10335 /* We only get here for friend declarations of
10336 members of other classes. */
10337 /* All method decls are public, so tell grokfndecl to set
10338 TREE_PUBLIC, also. */
10339 decl = grokfndecl (ctype, type, declarator, declarator,
10340 virtualp, flags, quals, raises, attrlist,
10341 friendp ? -1 : 0, friendp, 1, 0, funcdef_flag,
10342 template_count, in_namespace);
10343 if (decl == NULL_TREE)
10346 else if (!staticp && ! processing_template_decl
10347 && TYPE_SIZE (complete_type (type)) == NULL_TREE
10348 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
10351 cp_error (ec_field_has_incomplete_type, declarator);
10353 cp_error (ec_name_has_incomplete_type, type);
10355 /* If we're instantiating a template, tell them which
10356 instantiation made the field's type be incomplete. */
10357 if (current_class_type
10358 && TYPE_NAME (current_class_type)
10359 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
10360 && declspecs && TREE_VALUE (declspecs)
10361 && TREE_TYPE (TREE_VALUE (declspecs)) == type)
10362 cp_error (ec_in_instantiation_of_template,
10363 current_class_type);
10365 type = error_mark_node;
10372 cp_error (ec_s_is_neither_function_nor_method_cannot_be_declared_friend,
10373 IDENTIFIER_POINTER (declarator));
10381 /* Friends are treated specially. */
10382 if (ctype == current_class_type)
10383 cp_warning (ec_member_functions_are_implicitly_friends_of_their_class);
10386 tree t = NULL_TREE;
10387 if (decl && DECL_NAME (decl))
10389 if (template_class_depth (current_class_type) == 0)
10392 = check_explicit_specialization
10394 template_count, 2 * (funcdef_flag != 0) + 4);
10395 if (decl == error_mark_node)
10396 return error_mark_node;
10399 t = do_friend (ctype, declarator, decl,
10400 last_function_parms, flags, quals,
10403 if (t && funcdef_flag)
10406 return void_type_node;
10410 /* Structure field. It may not be a function, except for C++ */
10412 if (decl == NULL_TREE)
10418 /* An attempt is being made to initialize a non-static
10419 member. But, from [class.mem]:
10421 4 A member-declarator can contain a
10422 constant-initializer only if it declares a static
10423 member (_class.static_) of integral or enumeration
10424 type, see _class.static.data_.
10426 This used to be relatively common practice, but
10427 the rest of the compiler does not correctly
10428 handle the initialization unless the member is
10429 static so we make it static below. */
10430 cp_pedwarn (ec_forbids_initialization_of_s,
10431 constp ? "const member" : "member",
10433 cp_pedwarn (ec_making_static, declarator);
10437 /* Motion 10 at San Diego: If a static const integral data
10438 member is initialized with an integral constant
10439 expression, the initializer may appear either in the
10440 declaration (within the class), or in the definition,
10441 but not both. If it appears in the class, the member is
10442 a member constant. The file-scope definition is always
10444 if (CLASS_TYPE_P (type)
10445 || TREE_CODE (type) == REFERENCE_TYPE)
10447 cp_error (ec_inclass_initialization_of_static_data_member_of_nonintegral_type,
10449 /* If we just return the declaration, crashes will
10450 sometimes occur. We therefore return
10451 void_type_node, as if this was a friend
10452 declaration, to cause callers to completely
10453 ignore this declaration. */
10454 return void_type_node;
10457 cp_error (ec_forbids_inclass_initialization_of_nonconst_static_member,
10459 else if (pedantic && ! INTEGRAL_TYPE_P (type)
10460 && !uses_template_parms (type))
10461 cp_pedwarn (ec_forbids_initialization_of_member_constant_of_nonintegral_type, declarator, type);
10466 /* ANSI C++ Apr '95 wp 9.2 */
10467 if (declarator == current_class_name)
10468 cp_pedwarn (ec_forbids_static_member_with_same_name_as_enclosing_class,
10471 /* C++ allows static class members.
10472 All other work for this is done by grokfield.
10473 This VAR_DCL is built by build_lang_field_decl.
10474 All other VAR_DECLs are built by build_decl. */
10475 decl = build_lang_field_decl (VAR_DECL, declarator, type);
10476 TREE_STATIC (decl) = 1;
10477 /* In class context, 'static' means public access. */
10478 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = 1;
10482 decl = build_lang_field_decl (FIELD_DECL, declarator, type);
10483 if (RIDBIT_SETP (RID_MUTABLE, specbits))
10485 DECL_MUTABLE_P (decl) = 1;
10486 RIDBIT_RESET (RID_MUTABLE, specbits);
10490 bad_specifiers (decl, "field", virtualp, quals != NULL_TREE,
10491 inlinep, friendp, raises != NULL_TREE);
10494 else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
10496 tree original_name;
10502 if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR)
10503 original_name = dname;
10505 original_name = declarator;
10507 if (RIDBIT_SETP (RID_AUTO, specbits))
10508 cp_error (ec_storage_class_auto_invalid_for_function_s, name);
10509 else if (RIDBIT_SETP (RID_REGISTER, specbits))
10510 cp_error (ec_storage_class_register_invalid_for_function_s, name);
10512 /* Function declaration not at top level.
10513 Storage classes other than `extern' are not allowed
10514 and `extern' makes no difference. */
10515 if (! toplevel_bindings_p ()
10516 && (RIDBIT_SETP (RID_STATIC, specbits)
10517 || RIDBIT_SETP (RID_INLINE, specbits))
10520 if (RIDBIT_SETP (RID_STATIC, specbits))
10521 cp_pedwarn (ec_storage_class_static_invalid_for_function_s_declared_out_of_global_scope, name);
10523 cp_pedwarn (ec_storage_class_inline_invalid_for_function_s_declared_out_of_global_scope, name);
10526 if (ctype == NULL_TREE)
10530 cp_error (ec_virtual_nonclass_function_s, name);
10534 if (current_lang_name == lang_name_cplusplus
10535 && ! processing_template_decl
10536 && ! MAIN_NAME_P (original_name)
10537 && ! (IDENTIFIER_LENGTH (original_name) > 10
10538 && IDENTIFIER_POINTER (original_name)[0] == '_'
10539 && IDENTIFIER_POINTER (original_name)[1] == '_'
10540 && strncmp (IDENTIFIER_POINTER (original_name)+2, "builtin_", 8) == 0))
10541 /* Plain overloading: will not be grok'd by grokclassfn. */
10542 if (name_mangling_version < 1
10543 || TREE_CODE (declarator) != TEMPLATE_ID_EXPR)
10544 declarator = build_decl_overload (dname, TYPE_ARG_TYPES (type), 0);
10546 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2)
10547 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
10548 TREE_TYPE (type), TYPE_ARG_TYPES (type));
10550 /* Record presence of `static'. */
10551 publicp = (ctype != NULL_TREE
10552 || RIDBIT_SETP (RID_EXTERN, specbits)
10553 || !RIDBIT_SETP (RID_STATIC, specbits));
10555 decl = grokfndecl (ctype, type, original_name, declarator,
10556 virtualp, flags, quals, raises, attrlist,
10558 publicp, inlinep, funcdef_flag,
10559 template_count, in_namespace);
10560 if (decl == NULL_TREE)
10563 /* Among other times, could occur from check_explicit_specialization
10564 returning an error_mark_node. */
10565 if (decl == error_mark_node)
10566 return error_mark_node;
10568 if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c
10569 && (! DECL_USE_TEMPLATE (decl) ||
10570 name_mangling_version < 1))
10571 DECL_ASSEMBLER_NAME (decl) = declarator;
10575 int illegal_static = 0;
10577 /* Don't allow a static member function in a class, and forbid
10578 declaring main to be static. */
10579 if (TREE_CODE (type) == METHOD_TYPE)
10581 cp_pedwarn (ec_cannot_declare_member_function_to_have_static_linkage, decl);
10582 illegal_static = 1;
10584 else if (current_function_decl)
10586 /* FIXME need arm citation */
10587 cp_error (ec_cannot_declare_static_function_inside_another_function);
10588 illegal_static = 1;
10591 if (illegal_static)
10594 RIDBIT_RESET (RID_STATIC, specbits);
10600 /* It's a variable. */
10602 if (decl_context == CATCHPARM)
10607 cp_error (ec_cannot_use_in_parameter_declaration);
10610 /* A parameter declared as an array of T is really a pointer to T.
10611 One declared as a function is really a pointer to a function.
10612 One declared as a member is really a pointer to member. */
10614 if (TREE_CODE (type) == ARRAY_TYPE)
10616 /* Transfer const-ness of array into that of type
10618 type = build_pointer_type
10619 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
10620 volatilep = constp = 0;
10622 else if (TREE_CODE (type) == FUNCTION_TYPE)
10623 type = build_pointer_type (type);
10624 else if (TREE_CODE (type) == OFFSET_TYPE)
10625 type = build_pointer_type (type);
10628 /* An uninitialized decl with `extern' is a reference. */
10629 decl = grokvardecl (type, declarator, &specbits,
10630 initialized, constp, in_namespace);
10631 bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE,
10632 inlinep, friendp, raises != NULL_TREE);
10636 DECL_CONTEXT (decl) = ctype;
10639 cp_pedwarn (ec_static_member_redeclared_as_static, decl);
10641 RIDBIT_RESET (RID_STATIC, specbits);
10643 if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl))
10645 cp_error (ec_static_member_declared_register, decl);
10646 RIDBIT_RESET (RID_REGISTER, specbits);
10648 if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic)
10650 cp_pedwarn (ec_cannot_explicitly_declare_member_to_have_extern_linkage,
10652 RIDBIT_RESET (RID_EXTERN, specbits);
10657 if (RIDBIT_SETP (RID_MUTABLE, specbits))
10659 cp_error (ec_s_cannot_be_declared_mutable, name);
10662 /* Record `register' declaration for warnings on &
10663 and in case doing stupid register allocation. */
10665 if (RIDBIT_SETP (RID_REGISTER, specbits))
10666 DECL_REGISTER (decl) = 1;
10668 if (RIDBIT_SETP (RID_EXTERN, specbits))
10669 DECL_THIS_EXTERN (decl) = 1;
10671 if (RIDBIT_SETP (RID_STATIC, specbits))
10672 DECL_THIS_STATIC (decl) = 1;
10674 /* Record constancy and volatility. */
10677 TREE_READONLY (decl) = TREE_CODE (type) != REFERENCE_TYPE;
10680 TREE_SIDE_EFFECTS (decl) = 1;
10681 TREE_THIS_VOLATILE (decl) = 1;
10688 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10689 An empty exprlist is a parmlist. An exprlist which
10690 contains only identifiers at the global level
10691 is a parmlist. Otherwise, it is an exprlist. */
10694 parmlist_is_exprlist (exprs)
10697 if (exprs == NULL_TREE || TREE_PARMLIST (exprs))
10700 if (toplevel_bindings_p ())
10702 /* At the global level, if these are all identifiers,
10703 then it is a parmlist. */
10706 if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE)
10708 exprs = TREE_CHAIN (exprs);
10715 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10718 C++: also subroutine of `start_function'. */
10721 require_complete_types_for_parms (parms)
10724 if (processing_template_decl)
10729 tree type = TREE_TYPE (parms);
10730 if (TYPE_SIZE (complete_type (type)) == NULL_TREE)
10732 if (DECL_NAME (parms))
10733 cp_error (ec_parameter_s_has_incomplete_type,
10734 IDENTIFIER_POINTER (DECL_NAME (parms)));
10736 cp_error (ec_parameter_has_incomplete_type);
10737 TREE_TYPE (parms) = error_mark_node;
10740 /* If the arg types are incomplete in a declaration,
10741 they must include undefined tags.
10742 These tags can never be defined in the scope of the declaration,
10743 so the types can never be completed,
10744 and no call can be compiled successfully. */
10745 /* This is not the right behavior for C++, but not having
10746 it is also probably wrong. */
10749 /* Now warn if is a pointer to an incomplete type. */
10750 while (TREE_CODE (type) == POINTER_TYPE
10751 || TREE_CODE (type) == REFERENCE_TYPE)
10752 type = TREE_TYPE (type);
10753 type = TYPE_MAIN_VARIANT (type);
10754 if (TYPE_SIZE (type) == NULL_TREE)
10756 if (DECL_NAME (parm) != NULL_TREE)
10757 cp_warning (ec_parameter_s_points_to_incomplete_type,
10758 IDENTIFIER_POINTER (DECL_NAME (parm)));
10760 cp_warning (ec_parameter_points_to_incomplete_type);
10764 parms = TREE_CHAIN (parms);
10768 /* Decode the list of parameter types for a function type.
10769 Given the list of things declared inside the parens,
10770 return a list of types.
10772 The list we receive can have three kinds of elements:
10773 an IDENTIFIER_NODE for names given without types,
10774 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10775 or void_type_node, to mark the end of an argument list
10776 when additional arguments are not permitted (... was not used).
10778 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10779 a mere declaration. A nonempty identifier-list gets an error message
10780 when FUNCDEF_FLAG is zero.
10781 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10782 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10784 If all elements of the input list contain types,
10785 we return a list of the types.
10786 If all elements contain no type (except perhaps a void_type_node
10787 at the end), we return a null list.
10788 If some have types and some do not, it is an error, and we
10789 return a null list.
10791 Also set last_function_parms to either
10792 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10793 A list of names is converted to a chain of PARM_DECLs
10794 by store_parm_decls so that ultimately it is always a chain of decls.
10796 Note that in C++, parameters can take default values. These default
10797 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10798 an error to specify default values which are followed by parameters
10799 that have no default values, or an ELLIPSES. For simplicities sake,
10800 only parameters which are specified with their types can take on
10804 grokparms (first_parm, funcdef_flag)
10808 tree result = NULL_TREE;
10809 tree decls = NULL_TREE;
10811 if (first_parm != NULL_TREE
10812 && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
10814 if (! funcdef_flag)
10815 cp_pedwarn (ec_parameter_names_without_types_in_function_declaration);
10816 last_function_parms = first_parm;
10819 else if (first_parm != NULL_TREE
10820 && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST
10821 && TREE_CODE (TREE_VALUE (first_parm)) != VOID_TYPE)
10822 my_friendly_abort (145);
10825 /* Types were specified. This is a list of declarators
10826 each represented as a TREE_LIST node. */
10827 register tree parm, chain;
10828 int any_init = 0, any_error = 0;
10830 if (first_parm != NULL_TREE)
10832 tree last_result = NULL_TREE;
10833 tree last_decl = NULL_TREE;
10835 for (parm = first_parm; parm != NULL_TREE; parm = chain)
10837 tree type = NULL_TREE, list_node = parm;
10838 register tree decl = TREE_VALUE (parm);
10839 tree init = TREE_PURPOSE (parm);
10841 chain = TREE_CHAIN (parm);
10842 /* @@ weak defense against parse errors. */
10843 if (TREE_CODE (decl) != VOID_TYPE
10844 && TREE_CODE (decl) != TREE_LIST)
10846 /* Give various messages as the need arises. */
10847 if (TREE_CODE (decl) == STRING_CST)
10848 cp_error (ec_invalid_string_constant, decl);
10849 else if (TREE_CODE (decl) == INTEGER_CST)
10850 cp_error (ec_invalid_integer_constant_in_parameter_list_did_you_forget_to_give_parameter_name);
10854 if (TREE_CODE (decl) != VOID_TYPE)
10856 decl = grokdeclarator (TREE_VALUE (decl),
10857 TREE_PURPOSE (decl),
10858 PARM, init != NULL_TREE,
10862 type = TREE_TYPE (decl);
10863 if (TREE_CODE (type) == VOID_TYPE)
10864 decl = void_type_node;
10865 else if (TREE_CODE (type) == METHOD_TYPE)
10867 if (DECL_NAME (decl))
10868 /* Cannot use the decl here because
10869 we don't have DECL_CONTEXT set up yet. */
10870 cp_error (ec_parameter_invalidly_declared_method_type,
10873 cp_error (ec_parameter_invalidly_declared_method_type);
10874 type = build_pointer_type (type);
10875 TREE_TYPE (decl) = type;
10877 else if (TREE_CODE (type) == OFFSET_TYPE)
10879 if (DECL_NAME (decl))
10880 cp_error (ec_parameter_invalidly_declared_offset_type,
10883 cp_error (ec_parameter_invalidly_declared_offset_type);
10884 type = build_pointer_type (type);
10885 TREE_TYPE (decl) = type;
10887 else if (TREE_CODE (type) == RECORD_TYPE
10888 && TYPE_LANG_SPECIFIC (type)
10889 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
10891 abstract_virtuals_error (decl, type);
10892 any_error = 1; /* Seems like a good idea. */
10894 else if (TREE_CODE (type) == RECORD_TYPE
10895 && TYPE_LANG_SPECIFIC (type)
10896 && IS_SIGNATURE (type))
10898 signature_error (decl, type);
10899 any_error = 1; /* Seems like a good idea. */
10901 else if (POINTER_TYPE_P (type))
10904 while (POINTER_TYPE_P (t)
10905 || (TREE_CODE (t) == ARRAY_TYPE
10906 && TYPE_DOMAIN (t) != NULL_TREE))
10908 if (TREE_CODE (t) == ARRAY_TYPE)
10909 cp_error (ec_parameter_type_includes_pointer_to_array_of_unknown_bound,
10914 if (TREE_CODE (decl) == VOID_TYPE)
10916 if (result == NULL_TREE)
10918 result = void_list_node;
10919 last_result = result;
10923 TREE_CHAIN (last_result) = void_list_node;
10924 last_result = void_list_node;
10927 && (chain != void_list_node || TREE_CHAIN (chain)))
10928 cp_error (ec_void_in_parameter_list_must_be_entire_list);
10932 /* Since there is a prototype, args are passed in their own types. */
10933 DECL_ARG_TYPE (decl) = TREE_TYPE (decl);
10934 #ifdef PROMOTE_PROTOTYPES
10935 if ((TREE_CODE (type) == INTEGER_TYPE
10936 || TREE_CODE (type) == ENUMERAL_TYPE)
10937 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
10938 DECL_ARG_TYPE (decl) = integer_type_node;
10945 if (TREE_CODE (init) == SAVE_EXPR)
10946 PARM_DECL_EXPR (init) = 1;
10947 else if (processing_template_decl)
10949 /* Unparsed default arg from in-class decl. */
10950 else if (TREE_CODE (init) == DEFAULT_ARG)
10952 else if (TREE_CODE (init) == VAR_DECL
10953 || TREE_CODE (init) == PARM_DECL)
10955 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init)))
10957 /* ``Local variables may not be used in default
10958 argument expressions.'' dpANSI C++ 8.2.6 */
10959 /* If extern int i; within a function is not
10960 considered a local variable, then this code is
10962 cp_error (ec_local_variable_may_not_be_used_as_a_default_argument, init);
10965 else if (TREE_READONLY_DECL_P (init))
10966 init = decl_constant_value (init);
10969 init = require_instantiated_type (type, init, integer_zero_node);
10970 if (! processing_template_decl
10971 && init != error_mark_node
10972 && TREE_CODE (init) != DEFAULT_ARG
10973 && ! can_convert_arg (type, TREE_TYPE (init), init))
10974 cp_pedwarn (ec_invalid_type_for_default_argument_to_decl,
10975 TREE_TYPE (init), decl);
10981 if (decls == NULL_TREE)
10988 TREE_CHAIN (last_decl) = decl;
10991 if (! current_function_decl && TREE_PERMANENT (list_node))
10993 TREE_PURPOSE (list_node) = init;
10994 TREE_VALUE (list_node) = type;
10995 TREE_CHAIN (list_node) = NULL_TREE;
10998 list_node = saveable_tree_cons (init, type, NULL_TREE);
10999 if (result == NULL_TREE)
11001 result = list_node;
11002 last_result = result;
11006 TREE_CHAIN (last_result) = list_node;
11007 last_result = list_node;
11011 TREE_CHAIN (last_result) = NULL_TREE;
11012 /* If there are no parameters, and the function does not end
11013 with `...', then last_decl will be NULL_TREE. */
11014 if (last_decl != NULL_TREE)
11015 TREE_CHAIN (last_decl) = NULL_TREE;
11019 last_function_parms = decls;
11021 /* In a fcn definition, arg types must be complete. */
11022 if (funcdef_flag > 0)
11023 require_complete_types_for_parms (last_function_parms);
11028 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11029 FUNCTION_TYPE with the newly parsed version of its default argument, which
11030 was previously digested as text. See snarf_defarg et al in lex.c. */
11033 replace_defarg (arg, init)
11036 if (! processing_template_decl
11037 && ! can_convert_arg (TREE_VALUE (arg), TREE_TYPE (init), init))
11038 cp_pedwarn (ec_invalid_type_for_default_argument_to,
11039 TREE_TYPE (init), TREE_VALUE (arg));
11040 TREE_PURPOSE (arg) = init;
11047 tree t = FUNCTION_ARG_CHAIN (d);
11048 if (DECL_CONSTRUCTOR_P (d)
11049 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d)))
11050 t = TREE_CHAIN (t);
11051 if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE
11052 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t)))
11053 == DECL_CLASS_CONTEXT (d))
11054 && (TREE_CHAIN (t) == NULL_TREE
11055 || TREE_CHAIN (t) == void_list_node
11056 || TREE_PURPOSE (TREE_CHAIN (t))))
11061 /* These memoizing functions keep track of special properties which
11062 a class may have. `grok_ctor_properties' notices whether a class
11063 has a constructor of the form X(X&), and also complains
11064 if the class has a constructor of the form X(X).
11065 `grok_op_properties' takes notice of the various forms of
11066 operator= which are defined, as well as what sorts of type conversion
11067 may apply. Both functions take a FUNCTION_DECL as an argument. */
11070 grok_ctor_properties (ctype, decl)
11073 tree parmtypes = FUNCTION_ARG_CHAIN (decl);
11074 tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node;
11076 /* When a type has virtual baseclasses, a magical first int argument is
11077 added to any ctor so we can tell if the class has been initialized
11078 yet. This could screw things up in this function, so we deliberately
11079 ignore the leading int if we're in that situation. */
11080 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype))
11082 my_friendly_assert (parmtypes
11083 && TREE_VALUE (parmtypes) == integer_type_node,
11085 parmtypes = TREE_CHAIN (parmtypes);
11086 parmtype = TREE_VALUE (parmtypes);
11089 if (TREE_CODE (parmtype) == REFERENCE_TYPE
11090 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype
11091 && (TREE_CHAIN (parmtypes) == NULL_TREE
11092 || TREE_CHAIN (parmtypes) == void_list_node
11093 || TREE_PURPOSE (TREE_CHAIN (parmtypes))))
11095 TYPE_HAS_INIT_REF (ctype) = 1;
11096 if (TYPE_READONLY (TREE_TYPE (parmtype)))
11097 TYPE_HAS_CONST_INIT_REF (ctype) = 1;
11099 else if (TYPE_MAIN_VARIANT (parmtype) == ctype
11100 && TREE_CHAIN (parmtypes) != NULL_TREE
11101 && TREE_CHAIN (parmtypes) == void_list_node)
11103 cp_error (ec_invalid_constructor_you_probably_meant_const,
11105 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype);
11108 else if (TREE_CODE (parmtype) == VOID_TYPE
11109 || TREE_PURPOSE (parmtypes) != NULL_TREE)
11110 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1;
11115 /* An operator with this name can be either unary or binary. */
11121 return (name == ansi_opname [(int) INDIRECT_REF]
11122 || name == ansi_opname [(int) ADDR_EXPR]
11123 || name == ansi_opname [(int) NEGATE_EXPR]
11124 || name == ansi_opname[(int) POSTINCREMENT_EXPR]
11125 || name == ansi_opname[(int) POSTDECREMENT_EXPR]
11126 || name == ansi_opname [(int) CONVERT_EXPR]);
11129 /* An operator with this name can only be unary. */
11135 return (name == ansi_opname [(int) TRUTH_NOT_EXPR]
11136 || name == ansi_opname [(int) BIT_NOT_EXPR]
11137 || name == ansi_opname [(int) COMPONENT_REF]
11138 || OPERATOR_TYPENAME_P (name));
11141 /* Do a little sanity-checking on how they declared their operator. */
11144 grok_op_properties (decl, virtualp, friendp)
11146 int virtualp, friendp;
11148 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
11149 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
11150 tree name = DECL_NAME (decl);
11152 if (current_class_type == NULL_TREE)
11157 if (name == ansi_opname[(int) MODIFY_EXPR])
11158 TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
11159 else if (name == ansi_opname[(int) CALL_EXPR])
11160 TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1;
11161 else if (name == ansi_opname[(int) ARRAY_REF])
11162 TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1;
11163 else if (name == ansi_opname[(int) COMPONENT_REF]
11164 || name == ansi_opname[(int) MEMBER_REF])
11165 TYPE_OVERLOADS_ARROW (current_class_type) = 1;
11166 else if (name == ansi_opname[(int) NEW_EXPR])
11167 TYPE_GETS_NEW (current_class_type) |= 1;
11168 else if (name == ansi_opname[(int) DELETE_EXPR])
11169 TYPE_GETS_DELETE (current_class_type) |= 1;
11170 else if (name == ansi_opname[(int) VEC_NEW_EXPR])
11171 TYPE_GETS_NEW (current_class_type) |= 2;
11172 else if (name == ansi_opname[(int) VEC_DELETE_EXPR])
11173 TYPE_GETS_DELETE (current_class_type) |= 2;
11176 if (name == ansi_opname[(int) NEW_EXPR]
11177 || name == ansi_opname[(int) VEC_NEW_EXPR])
11179 /* When the compiler encounters the definition of A::operator new, it
11180 doesn't look at the class declaration to find out if it's static. */
11182 revert_static_member_fn (&decl, NULL, NULL);
11184 /* Take care of function decl if we had syntax errors. */
11185 if (argtypes == NULL_TREE)
11187 = build_function_type (ptr_type_node,
11188 hash_tree_chain (integer_type_node,
11191 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
11193 else if (name == ansi_opname[(int) DELETE_EXPR]
11194 || name == ansi_opname[(int) VEC_DELETE_EXPR])
11197 revert_static_member_fn (&decl, NULL, NULL);
11199 if (argtypes == NULL_TREE)
11201 = build_function_type (void_type_node,
11202 hash_tree_chain (ptr_type_node,
11206 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
11208 if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR]
11209 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))
11210 != void_list_node))
11211 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1;
11216 /* An operator function must either be a non-static member function
11217 or have at least one parameter of a class, a reference to a class,
11218 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11219 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
11221 if (OPERATOR_TYPENAME_P (name)
11222 || name == ansi_opname[(int) CALL_EXPR]
11223 || name == ansi_opname[(int) MODIFY_EXPR]
11224 || name == ansi_opname[(int) COMPONENT_REF]
11225 || name == ansi_opname[(int) ARRAY_REF])
11226 cp_error (ec_must_be_a_nonstatic_member_function, decl);
11231 if (DECL_STATIC_FUNCTION_P (decl))
11232 cp_error (ec_must_be_either_a_nonstatic_member_function_or_a_nonmember_function, decl);
11235 for (; TREE_CODE (TREE_VALUE (p)) != VOID_TYPE ; p = TREE_CHAIN (p))
11237 tree arg = TREE_VALUE (p);
11238 if (TREE_CODE (arg) == REFERENCE_TYPE)
11239 arg = TREE_TYPE (arg);
11241 /* This lets bad template code slip through. */
11242 if (IS_AGGR_TYPE (arg)
11243 || TREE_CODE (arg) == ENUMERAL_TYPE
11244 || TREE_CODE (arg) == TEMPLATE_TYPE_PARM
11245 || TREE_CODE (arg) == TEMPLATE_TEMPLATE_PARM)
11248 cp_error (ec_must_have_an_argument_of_class_or_enumerated_type,
11255 if (name == ansi_opname[(int) CALL_EXPR])
11256 return; /* No restrictions on args. */
11258 if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl))
11260 tree t = TREE_TYPE (name);
11261 if (TREE_CODE (t) == VOID_TYPE)
11262 cp_pedwarn (ec_void_is_not_a_valid_type_conversion_operator);
11263 else if (! friendp)
11265 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
11268 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
11270 if (t == current_class_type)
11271 what = "the same type";
11272 /* Don't force t to be complete here. */
11273 else if (IS_AGGR_TYPE (t)
11275 && DERIVED_FROM_P (t, current_class_type))
11276 what = "a base class";
11279 cp_warning (ec_conversion_to_ss_will_never_use_a_type_conversion_operator,
11280 ref ? "a reference to " : "", what);
11284 if (name == ansi_opname[(int) MODIFY_EXPR])
11288 if (list_length (argtypes) != 3 && methodp)
11290 cp_error (ec_must_take_exactly_one_argument, decl);
11293 parmtype = TREE_VALUE (TREE_CHAIN (argtypes));
11295 if (copy_assignment_arg_p (parmtype, virtualp)
11298 TYPE_HAS_ASSIGN_REF (current_class_type) = 1;
11299 if (TREE_CODE (parmtype) != REFERENCE_TYPE
11300 || TYPE_READONLY (TREE_TYPE (parmtype)))
11301 TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1;
11304 else if (name == ansi_opname[(int) COND_EXPR])
11307 cp_pedwarn (ec_prohibits_overloading_operator);
11308 if (list_length (argtypes) != 4)
11309 cp_error (ec_must_take_exactly_three_arguments, decl);
11311 else if (ambi_op_p (name))
11313 if (list_length (argtypes) == 2)
11315 else if (list_length (argtypes) == 3)
11317 if ((name == ansi_opname[(int) POSTINCREMENT_EXPR]
11318 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
11319 && ! processing_template_decl
11320 && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node)
11323 cp_error (ec_postfix_must_take_int_as_its_argument,
11326 cp_error (ec_postfix_must_take_int_as_its_second_argument,
11333 cp_error (ec_must_take_either_zero_or_one_argument, decl);
11335 cp_error (ec_must_take_either_one_or_two_arguments, decl);
11338 /* More Effective C++ rule 6. */
11340 && (name == ansi_opname[(int) POSTINCREMENT_EXPR]
11341 || name == ansi_opname[(int) POSTDECREMENT_EXPR]))
11343 tree arg = TREE_VALUE (argtypes);
11344 tree ret = TREE_TYPE (TREE_TYPE (decl));
11345 if (methodp || TREE_CODE (arg) == REFERENCE_TYPE)
11346 arg = TREE_TYPE (arg);
11347 arg = TYPE_MAIN_VARIANT (arg);
11348 if (list_length (argtypes) == 2)
11350 if (TREE_CODE (ret) != REFERENCE_TYPE
11351 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret)),
11353 cp_warning (ec_prefix_should_return, decl,
11354 build_reference_type (arg));
11358 if (!comptypes (TYPE_MAIN_VARIANT (ret), arg, 1))
11359 cp_warning (ec_postfix_should_return, decl, arg);
11363 else if (unary_op_p (name))
11365 if (list_length (argtypes) != 2)
11368 cp_error (ec_must_take_void, decl);
11370 cp_error (ec_must_take_exactly_one_argument, decl);
11373 else /* if (binary_op_p (name)) */
11375 if (list_length (argtypes) != 3)
11378 cp_error (ec_must_take_exactly_one_argument, decl);
11380 cp_error (ec_must_take_exactly_two_arguments, decl);
11383 /* More Effective C++ rule 7. */
11385 && (name == ansi_opname [TRUTH_ANDIF_EXPR]
11386 || name == ansi_opname [TRUTH_ORIF_EXPR]
11387 || name == ansi_opname [COMPOUND_EXPR]))
11388 cp_warning (ec_userdefined_always_evaluates_both_arguments,
11392 /* Effective C++ rule 23. */
11394 && list_length (argtypes) == 3
11395 && (name == ansi_opname [PLUS_EXPR]
11396 || name == ansi_opname [MINUS_EXPR]
11397 || name == ansi_opname [TRUNC_DIV_EXPR]
11398 || name == ansi_opname [MULT_EXPR])
11399 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE)
11400 cp_warning (ec_should_return_by_value, decl);
11404 for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes))
11405 if (TREE_PURPOSE (argtypes))
11407 TREE_PURPOSE (argtypes) = NULL_TREE;
11408 if (name == ansi_opname[(int) POSTINCREMENT_EXPR]
11409 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
11412 cp_pedwarn (ec_cannot_have_default_arguments, decl);
11415 cp_error (ec_cannot_have_default_arguments, decl);
11420 /* Get the struct, enum or union (CODE says which) with tag NAME.
11421 Define the tag as a forward-reference if it is not defined.
11423 C++: If a class derivation is given, process it here, and report
11424 an error if multiple derivation declarations are not identical.
11426 If this is a definition, come in through xref_tag and only look in
11427 the current frame for the name (since C++ allows new names in any
11431 xref_tag (code_type_node, name, globalize)
11432 tree code_type_node;
11436 enum tag_types tag_code;
11437 enum tree_code code;
11439 register tree ref, t;
11440 struct binding_level *b = inner_binding_level;
11442 tree attributes = NULL_TREE;
11444 /* If we are called from the parser, code_type_node will sometimes be a
11445 TREE_LIST. This indicates that the user wrote
11446 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11448 if (TREE_CODE (code_type_node) == TREE_LIST)
11450 attributes = TREE_PURPOSE (code_type_node);
11451 code_type_node = TREE_VALUE (code_type_node);
11454 tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
11459 case signature_type:
11460 code = RECORD_TYPE;
11466 code = ENUMERAL_TYPE;
11469 my_friendly_abort (18);
11472 /* If a cross reference is requested, look up the type
11473 already defined for this tag and return it. */
11474 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
11477 name = TYPE_IDENTIFIER (t);
11481 t = IDENTIFIER_TYPE_VALUE (name);
11482 if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM
11483 && TREE_CODE (t) != TEMPLATE_TEMPLATE_PARM)
11488 if (t && (TREE_CODE (t) == TEMPLATE_TYPE_PARM
11489 || TREE_CODE (t) == TEMPLATE_TEMPLATE_PARM))
11491 cp_error (ec_redeclaration_of_template_typeparameter, name);
11492 cp_error_at (ec_previously_declared_here,
11493 TEMPLATE_TYPE_DECL (t));
11495 if (t && TYPE_CONTEXT (t) && got_type)
11498 /* If we know we are defining this tag, only look it up in
11499 this scope and don't try to find it as a type. */
11500 ref = lookup_tag (code, name, b, 1);
11504 if (current_class_type
11505 && template_class_depth (current_class_type)
11506 && PROCESSING_REAL_TEMPLATE_DECL_P ())
11507 /* Since GLOBALIZE is non-zero, we are not looking at a
11508 definition of this tag. Since, in addition, we are currently
11509 processing a (member) template declaration of a template
11510 class, we don't want to do any lookup at all; consider:
11517 { template <class V>
11518 friend struct S1; };
11520 Here, the S2::S1 declaration should not be confused with the
11521 outer declaration. In particular, the inner version should
11522 have a template parameter of level 2, not level 1. This
11523 would be particularly important if the member declaration
11526 template <class V = U> friend struct S1;
11528 say, when we should tsubst into `U' when instantiating S2. */
11535 ref = lookup_tag (code, name, b, 0);
11539 /* Try finding it as a type declaration. If that wins,
11541 ref = lookup_name (name, 1);
11543 if (ref != NULL_TREE
11544 && processing_template_decl
11545 && DECL_CLASS_TEMPLATE_P (ref)
11546 && template_class_depth (current_class_type) == 0)
11547 /* Since GLOBALIZE is true, we're declaring a global
11548 template, so we want this type. */
11549 ref = DECL_RESULT (ref);
11551 if (ref && TREE_CODE (ref) == TYPE_DECL
11552 && TREE_CODE (TREE_TYPE (ref)) == code)
11553 ref = TREE_TYPE (ref);
11560 push_obstacks_nochange ();
11564 /* If no such tag is yet defined, create a forward-reference node
11565 and record it as the "definition".
11566 When a real declaration of this type is found,
11567 the forward-reference will be altered into a real type. */
11569 /* In C++, since these migrate into the global scope, we must
11570 build them on the permanent obstack. */
11572 temp = allocation_temporary_p ();
11574 end_temporary_allocation ();
11576 if (code == ENUMERAL_TYPE)
11578 cp_error (ec_use_of_enum_without_previous_declaration, name);
11580 ref = make_node (ENUMERAL_TYPE);
11582 /* Give the type a default layout like unsigned int
11583 to avoid crashing if it does not get defined. */
11584 TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
11585 TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
11586 TREE_UNSIGNED (ref) = 1;
11587 TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
11588 TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
11589 TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
11591 /* Enable us to recognize when a type is created in class context.
11592 To do nested classes correctly, this should probably be cleared
11593 out when we leave this classes scope. Currently this in only
11594 done in `start_enum'. */
11596 pushtag (name, ref, globalize);
11600 struct binding_level *old_b = class_binding_level;
11602 ref = make_lang_type (code);
11604 if (tag_code == signature_type)
11606 SET_SIGNATURE (ref);
11607 /* Since a signature type will be turned into the type
11608 of signature tables, it's not only an interface. */
11609 CLASSTYPE_INTERFACE_ONLY (ref) = 0;
11610 SET_CLASSTYPE_INTERFACE_KNOWN (ref);
11611 /* A signature doesn't have a vtable. */
11612 CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0;
11615 #ifdef NONNESTED_CLASSES
11616 /* Class types don't nest the way enums do. */
11617 class_binding_level = (struct binding_level *)0;
11619 pushtag (name, ref, globalize);
11620 class_binding_level = old_b;
11625 /* If it no longer looks like a nested type, make sure it's
11627 If it is not an IDENTIFIER, this is not a declaration */
11628 if (b->namespace_p && !class_binding_level
11629 && TREE_CODE (name) == IDENTIFIER_NODE)
11631 if (IDENTIFIER_NAMESPACE_VALUE (name) == NULL_TREE)
11632 SET_IDENTIFIER_NAMESPACE_VALUE (name, TYPE_NAME (ref));
11635 if (!globalize && processing_template_decl && IS_AGGR_TYPE (ref))
11636 redeclare_class_template (ref, current_template_parms);
11639 /* Until the type is defined, tentatively accept whatever
11640 structure tag the user hands us. */
11641 if (TYPE_SIZE (ref) == NULL_TREE
11642 && ref != current_class_type
11643 /* Have to check this, in case we have contradictory tag info. */
11644 && IS_AGGR_TYPE_CODE (TREE_CODE (ref)))
11646 if (tag_code == class_type)
11647 CLASSTYPE_DECLARED_CLASS (ref) = 1;
11648 else if (tag_code == record_type || tag_code == signature_type)
11649 CLASSTYPE_DECLARED_CLASS (ref) = 0;
11654 TREE_TYPE (ref) = attributes;
11660 xref_tag_from_type (old, id, globalize)
11664 tree code_type_node;
11666 if (TREE_CODE (old) == RECORD_TYPE)
11667 code_type_node = (CLASSTYPE_DECLARED_CLASS (old)
11668 ? class_type_node : record_type_node);
11670 code_type_node = union_type_node;
11672 if (id == NULL_TREE)
11673 id = TYPE_IDENTIFIER (old);
11675 return xref_tag (code_type_node, id, globalize);
11679 xref_basetypes (code_type_node, name, ref, binfo)
11680 tree code_type_node;
11684 /* In the declaration `A : X, Y, ... Z' we mark all the types
11685 (A, X, Y, ..., Z) so we can check for duplicates. */
11688 enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
11690 if (tag_code == union_type)
11692 cp_error (ec_derived_union_invalid, ref);
11696 len = list_length (binfo);
11697 push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref));
11699 SET_CLASSTYPE_MARKED (ref);
11700 BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len);
11702 for (i = 0; binfo; binfo = TREE_CHAIN (binfo))
11704 /* The base of a derived struct is public by default. */
11706 = (TREE_PURPOSE (binfo) == access_public_node
11707 || TREE_PURPOSE (binfo) == access_public_virtual_node
11708 || (tag_code != class_type
11709 && (TREE_PURPOSE (binfo) == access_default_node
11710 || TREE_PURPOSE (binfo) == access_default_virtual_node)));
11712 = (TREE_PURPOSE (binfo) == access_protected_node
11713 || TREE_PURPOSE (binfo) == access_protected_virtual_node);
11715 = (TREE_PURPOSE (binfo) == access_private_virtual_node
11716 || TREE_PURPOSE (binfo) == access_protected_virtual_node
11717 || TREE_PURPOSE (binfo) == access_public_virtual_node
11718 || TREE_PURPOSE (binfo) == access_default_virtual_node);
11719 tree basetype = TREE_VALUE (binfo);
11722 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
11723 basetype = TREE_TYPE (basetype);
11725 || (TREE_CODE (basetype) != RECORD_TYPE
11726 && TREE_CODE (basetype) != TYPENAME_TYPE
11727 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
11728 && TREE_CODE (basetype) != TEMPLATE_TEMPLATE_PARM))
11730 cp_error (ec_base_type_fails_to_be_a_struct_or_class_type,
11731 TREE_VALUE (binfo));
11735 GNU_xref_hier (name, basetype, via_public, via_virtual, 0);
11738 /* This code replaces similar code in layout_basetypes.
11739 We put the complete_type first for implicit `typename'. */
11740 if (TYPE_SIZE (complete_type (basetype)) == NULL_TREE
11741 && ! (current_template_parms && uses_template_parms (basetype)))
11743 cp_error (ec_base_class_has_incomplete_type, basetype);
11749 if (CLASSTYPE_MARKED (basetype))
11751 if (basetype == ref)
11752 cp_error (ec_recursive_type_undefined, basetype);
11754 cp_error (ec_duplicate_base_type_invalid, basetype);
11758 if (TYPE_FOR_JAVA (basetype)
11759 && current_lang_stack == current_lang_base)
11760 TYPE_FOR_JAVA (ref) = 1;
11762 /* Note that the BINFO records which describe individual
11763 inheritances are *not* shared in the lattice! They
11764 cannot be shared because a given baseclass may be
11765 inherited with different `accessibility' by different
11766 derived classes. (Each BINFO record describing an
11767 individual inheritance contains flags which say what
11768 the `accessibility' of that particular inheritance is.) */
11770 base_binfo = make_binfo (integer_zero_node, basetype,
11771 TYPE_BINFO_VTABLE (basetype),
11772 TYPE_BINFO_VIRTUALS (basetype));
11774 TREE_VEC_ELT (binfos, i) = base_binfo;
11775 TREE_VIA_PUBLIC (base_binfo) = via_public;
11776 TREE_VIA_PROTECTED (base_binfo) = via_protected;
11777 TREE_VIA_VIRTUAL (base_binfo) = via_virtual;
11778 BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref);
11780 /* We need to unshare the binfos now so that lookups during class
11781 definition work. */
11782 unshare_base_binfos (base_binfo);
11784 SET_CLASSTYPE_MARKED (basetype);
11786 /* We are free to modify these bits because they are meaningless
11787 at top level, and BASETYPE is a top-level type. */
11788 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
11790 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
11791 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
11794 TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype);
11795 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
11796 CLASSTYPE_LOCAL_TYPEDECLS (ref) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype);
11801 TREE_VEC_LENGTH (binfos) = i;
11803 BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE;
11806 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
11808 TYPE_USES_MULTIPLE_INHERITANCE (ref)
11809 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos, 0)));
11810 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
11811 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
11813 /* Unmark all the types. */
11815 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i)));
11816 CLEAR_CLASSTYPE_MARKED (ref);
11822 tree current_local_enum = NULL_TREE;
11824 /* Begin compiling the definition of an enumeration type.
11825 NAME is its name (or null if anonymous).
11826 Returns the type object, as yet incomplete.
11827 Also records info about it so that build_enumerator
11828 may be used to declare the individual values as they are read. */
11834 register tree enumtype = NULL_TREE;
11835 struct binding_level *b = inner_binding_level;
11837 /* We are wasting space here and putting these on the permanent_obstack so
11838 that typeid(local enum) will work correctly. */
11840 if (processing_template_decl && current_function_decl)
11843 end_temporary_allocation ();
11845 /* If this is the real definition for a previous forward reference,
11846 fill in the contents in the same object that used to be the
11847 forward reference. */
11849 if (name != NULL_TREE)
11850 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
11852 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
11853 cp_error (ec_multiple_definition_of, enumtype);
11856 enumtype = make_node (ENUMERAL_TYPE);
11857 pushtag (name, enumtype, 0);
11860 if (current_class_type)
11861 TREE_ADDRESSABLE (b->tags) = 1;
11863 current_local_enum = NULL_TREE;
11865 /* We don't copy this value because build_enumerator needs to do it. */
11866 enum_next_value = integer_zero_node;
11869 GNU_xref_decl (current_function_decl, enumtype);
11873 /* After processing and defining all the values of an enumeration type,
11874 install their decls in the enumeration type and finish it off.
11875 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11876 Returns ENUMTYPE. */
11879 finish_enum (enumtype)
11882 register tree minnode = NULL_TREE, maxnode = NULL_TREE;
11883 /* Calculate the maximum value of any enumerator in this type. */
11885 tree values = TYPE_VALUES (enumtype);
11890 for (pair = values; pair; pair = TREE_CHAIN (pair))
11895 /* The TREE_VALUE is a CONST_DECL for this enumeration
11897 decl = TREE_VALUE (pair);
11899 /* The DECL_INITIAL will be NULL if we are processing a
11900 template declaration and this enumeration constant had no
11901 explicit initializer. */
11902 value = DECL_INITIAL (decl);
11903 if (value && !processing_template_decl)
11905 /* Set the TREE_TYPE for the VALUE as well. That's so
11906 that when we call decl_constant_value we get an
11907 entity of the right type (but with the constant
11908 value). Since we shouldn't ever call
11909 decl_constant_value on a template type, there's no
11910 reason to do that when processing_template_decl.
11911 And, if the expression is something like a
11912 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
11913 wreak havoc on the intended type of the expression.
11915 Of course, there's also no point in trying to compute
11916 minimum or maximum values if we're in a template. */
11917 TREE_TYPE (value) = enumtype;
11920 minnode = maxnode = value;
11921 else if (tree_int_cst_lt (maxnode, value))
11923 else if (tree_int_cst_lt (value, minnode))
11927 if (processing_template_decl)
11928 /* If this is just a template, leave the CONST_DECL
11929 alone. That way tsubst_copy will find CONST_DECLs for
11930 CONST_DECLs, and not INTEGER_CSTs. */
11933 /* In the list we're building up, we want the enumeration
11934 values, not the CONST_DECLs. */
11935 TREE_VALUE (pair) = value;
11939 maxnode = minnode = integer_zero_node;
11941 TYPE_VALUES (enumtype) = nreverse (values);
11943 if (processing_template_decl)
11945 tree scope = current_scope ();
11946 if (scope && TREE_CODE (scope) == FUNCTION_DECL)
11948 add_tree (build_min (TAG_DEFN, enumtype));
11949 resume_temporary_allocation ();
11955 int unsignedp = tree_int_cst_sgn (minnode) >= 0;
11956 int lowprec = min_precision (minnode, unsignedp);
11957 int highprec = min_precision (maxnode, unsignedp);
11958 int precision = MAX (lowprec, highprec);
11960 TYPE_SIZE (enumtype) = NULL_TREE;
11962 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11964 TYPE_PRECISION (enumtype) = precision;
11966 fixup_unsigned_type (enumtype);
11968 fixup_signed_type (enumtype);
11970 if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node)))
11971 /* Use the width of the narrowest normal C type which is wide enough. */
11972 TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size
11975 TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
11977 TYPE_SIZE (enumtype) = 0;
11978 layout_type (enumtype);
11984 /* Fix up all variant types of this enum type. */
11985 for (tem = TYPE_MAIN_VARIANT (enumtype); tem;
11986 tem = TYPE_NEXT_VARIANT (tem))
11988 TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
11989 TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
11990 TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
11991 TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
11992 TYPE_SIZE_UNIT (tem) = TYPE_SIZE_UNIT (enumtype);
11993 TYPE_MODE (tem) = TYPE_MODE (enumtype);
11994 TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
11995 TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
11996 TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
12000 /* Finish debugging output for this type. */
12001 rest_of_type_compilation (enumtype, namespace_bindings_p ());
12006 /* Build and install a CONST_DECL for an enumeration constant of the
12007 enumeration type TYPE whose NAME and VALUE (if any) are provided.
12008 Assignment of sequential values by default is handled here. */
12011 build_enumerator (name, value, type)
12019 /* Remove no-op casts from the value. */
12021 STRIP_TYPE_NOPS (value);
12023 if (! processing_template_decl)
12025 /* Validate and default VALUE. */
12026 if (value != NULL_TREE)
12028 if (TREE_READONLY_DECL_P (value))
12029 value = decl_constant_value (value);
12031 if (TREE_CODE (value) == INTEGER_CST)
12033 value = default_conversion (value);
12034 constant_expression_warning (value);
12038 cp_error (ec_enumerator_value_for_not_integer_constant, name);
12043 /* Default based on previous value. */
12044 if (value == NULL_TREE && ! processing_template_decl)
12046 value = enum_next_value;
12048 cp_error (ec_overflow_in_enumeration_values_at, name);
12051 /* Remove no-op casts from the value. */
12053 STRIP_TYPE_NOPS (value);
12055 /* To fix MAX_VAL enum consts. (bkoz) */
12056 TREE_TYPE (value) = integer_type_node;
12060 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12061 Even in other cases, we will later (in finish_enum) be setting the
12063 if (value != NULL_TREE)
12064 value = copy_node (value);
12066 /* C++ associates enums with global, function, or class declarations. */
12068 context = current_scope ();
12069 if (context && context == current_class_type)
12070 /* This enum declaration is local to the class. */
12071 decl = build_lang_field_decl (CONST_DECL, name, type);
12073 /* It's a global enum, or it's local to a function. (Note local to
12074 a function could mean local to a class method. */
12075 decl = build_decl (CONST_DECL, name, type);
12077 DECL_CONTEXT (decl) = FROB_CONTEXT (context);
12078 DECL_INITIAL (decl) = value;
12079 TREE_READONLY (decl) = 1;
12081 if (context && context == current_class_type)
12083 pushdecl_class_level (decl);
12084 TREE_CHAIN (decl) = current_local_enum;
12085 current_local_enum = decl;
12090 GNU_xref_decl (current_function_decl, decl);
12093 if (! processing_template_decl)
12095 /* Set basis for default for next value. */
12096 enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value,
12097 integer_one_node, PLUS_EXPR);
12098 enum_overflow = tree_int_cst_lt (enum_next_value, value);
12101 result = saveable_tree_cons (name, decl, NULL_TREE);
12105 /* Called after we have finished the declaration of an enumeration
12106 type, and, perhaps, some objects whose type involves the
12107 enumeration type. DECL, if non-NULL, is the declaration of the
12110 If CURRENT_LOCAL_ENUM is NULL, the DECL is returned.
12112 If CURRENT_LOCAL_ENUM is non-NULL, it should be the CONST_DECL for
12113 the last enumeration constant of an enumeration type that is a
12114 member of a class. The enumeration constants are already chained
12115 together through their TREE_CHAIN fields. This function sets the
12116 TREE_CHAIN of the last enumeration constant to DECL. The
12117 CONST_DECL for the last enumeration constant is returned.
12119 CURRENT_LOCAL_ENUM will always be NULL when this function
12123 grok_enum_decls (decl)
12126 tree d = current_local_enum;
12128 if (d == NULL_TREE)
12133 if (TREE_CHAIN (d) == NULL_TREE)
12135 TREE_CHAIN (d) = decl;
12138 d = TREE_CHAIN (d);
12141 decl = current_local_enum;
12142 current_local_enum = NULL_TREE;
12147 static int function_depth;
12149 /* Create the FUNCTION_DECL for a function definition.
12150 DECLSPECS and DECLARATOR are the parts of the declaration;
12151 they describe the function's name and the type it returns,
12152 but twisted together in a fashion that parallels the syntax of C.
12154 This function creates a binding context for the function body
12155 as well as setting up the FUNCTION_DECL in current_function_decl.
12157 Returns 1 on success. If the DECLARATOR is not suitable for a function
12158 (it defines a datum instead), we return 0, which tells
12159 yyparse to report a parse error.
12161 For C++, we must first check whether that datum makes any sense.
12162 For example, "class A local_a(1,2);" means that variable local_a
12163 is an aggregate of type A, which should have a constructor
12164 applied to it with the argument list [1, 2].
12166 @@ There is currently no way to retrieve the storage
12167 @@ allocated to FUNCTION (or all of its parms) if we return
12168 @@ something we had previously. */
12171 start_function (declspecs, declarator, attrs, pre_parsed_p)
12172 tree declspecs, declarator, attrs;
12176 tree ctype = NULL_TREE;
12179 extern int have_extern_spec;
12180 extern int used_extern_spec;
12181 int doing_friend = 0;
12183 /* Sanity check. */
12184 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160);
12185 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
12187 /* Assume, until we see it does. */
12188 current_function_returns_value = 0;
12189 current_function_returns_null = 0;
12190 warn_about_return_type = 0;
12192 shadowed_labels = 0;
12193 current_function_assigns_this = 0;
12194 current_function_just_assigned_this = 0;
12195 current_function_parms_stored = 0;
12196 original_result_rtx = NULL_RTX;
12197 base_init_expr = NULL_TREE;
12198 current_base_init_list = NULL_TREE;
12199 current_member_init_list = NULL_TREE;
12200 ctor_label = dtor_label = NULL_TREE;
12201 static_labelno = 0;
12203 clear_temp_name ();
12205 /* This should only be done once on the top most decl. */
12206 if (have_extern_spec && !used_extern_spec)
12208 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs);
12209 used_extern_spec = 1;
12214 decl1 = declarator;
12217 /* What was this testing for, exactly? */
12218 if (! DECL_ARGUMENTS (decl1)
12219 && !DECL_STATIC_FUNCTION_P (decl1)
12220 && !DECL_ARTIFICIAL (decl1)
12221 && DECL_CLASS_SCOPE_P (decl1)
12222 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1))
12223 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1))))
12225 tree binding = binding_for_name (DECL_NAME (decl1),
12226 current_namespace);
12227 cp_error (ec_redeclaration_of, decl1);
12228 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)))
12229 cp_error_at (ec_previous_declaration_here, IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)));
12230 else if (BINDING_VALUE (binding))
12231 cp_error_at (ec_previous_declaration_here, BINDING_VALUE (binding));
12235 fntype = TREE_TYPE (decl1);
12236 if (TREE_CODE (fntype) == METHOD_TYPE)
12237 ctype = TYPE_METHOD_BASETYPE (fntype);
12239 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12240 class is in the (lexical) scope of the class in which it is
12242 if (!ctype && DECL_FRIEND_P (decl1))
12244 ctype = DECL_CLASS_CONTEXT (decl1);
12246 /* CTYPE could be null here if we're dealing with a template;
12247 for example, `inline friend float foo()' inside a template
12248 will have no CTYPE set. */
12249 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
12255 /* In a fcn definition, arg types must be complete. */
12256 require_complete_types_for_parms (DECL_ARGUMENTS (decl1));
12258 /* In case some arg types were completed since the declaration was
12259 parsed, fix up the decls. */
12261 tree t = DECL_ARGUMENTS (decl1);
12262 for (; t; t = TREE_CHAIN (t))
12263 layout_decl (t, 0);
12266 last_function_parms = DECL_ARGUMENTS (decl1);
12267 last_function_parm_tags = NULL_TREE;
12271 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE);
12272 /* If the declarator is not suitable for a function definition,
12273 cause a syntax error. */
12274 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0;
12276 fntype = TREE_TYPE (decl1);
12278 restype = TREE_TYPE (fntype);
12279 if (IS_AGGR_TYPE (restype) && ! TYPE_PTRMEMFUNC_P (restype)
12280 && ! CLASSTYPE_GOT_SEMICOLON (restype))
12282 cp_error (ec_semicolon_missing_after_declaration_of, restype);
12283 shadow_tag (build_expr_list (NULL_TREE, restype));
12284 CLASSTYPE_GOT_SEMICOLON (restype) = 1;
12285 if (TREE_CODE (fntype) == FUNCTION_TYPE)
12286 fntype = build_function_type (integer_type_node,
12287 TYPE_ARG_TYPES (fntype));
12289 fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)),
12291 TYPE_ARG_TYPES (fntype));
12292 TREE_TYPE (decl1) = fntype;
12295 if (TREE_CODE (fntype) == METHOD_TYPE)
12296 ctype = TYPE_METHOD_BASETYPE (fntype);
12297 else if (DECL_MAIN_P (decl1))
12299 /* If this doesn't return integer_type, complain. */
12300 if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node)
12302 if (pedantic || warn_return_type)
12303 cp_pedwarn (ec_return_type_for_main_changed_to_int);
12304 TREE_TYPE (decl1) = fntype = default_function_type;
12306 warn_about_return_type = 0;
12310 /* Warn if function was previously implicitly declared
12311 (but not if we warned then). */
12312 if (! warn_implicit
12313 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE)
12314 cp_warning_at (ec_implicitly_declared_before_its_definition, IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)));
12316 current_function_decl = decl1;
12317 /* Save the parm names or decls from this function's declarator
12318 where store_parm_decls will find them. */
12319 current_function_parms = last_function_parms;
12320 current_function_parm_tags = last_function_parm_tags;
12322 announce_function (decl1);
12324 if (! processing_template_decl)
12326 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE)
12328 cp_error (ec_returntype_is_an_incomplete_type,
12329 TREE_TYPE (fntype));
12331 /* Make it return void instead, but don't change the
12332 type of the DECL_RESULT, in case we have a named return value. */
12335 = build_cplus_method_type (build_type_variant (ctype,
12336 TREE_READONLY (decl1),
12337 TREE_SIDE_EFFECTS (decl1)),
12339 FUNCTION_ARG_CHAIN (decl1));
12342 = build_function_type (void_type_node,
12343 TYPE_ARG_TYPES (TREE_TYPE (decl1)));
12344 DECL_RESULT (decl1)
12345 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype)));
12346 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (TREE_TYPE (fntype));
12347 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (TREE_TYPE (fntype));
12350 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype))
12351 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype)))
12352 abstract_virtuals_error (decl1, TREE_TYPE (fntype));
12355 if (warn_about_return_type)
12356 cp_pedwarn (ec_returntype_defaults_to_int);
12358 /* Effective C++ rule 15. See also c_expand_return. */
12360 && DECL_NAME (decl1) == ansi_opname[(int) MODIFY_EXPR]
12361 && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
12362 cp_warning (ec_operator_should_return_a_reference_to_this);
12364 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12365 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12366 DECL_INITIAL (decl1) = error_mark_node;
12368 /* This function exists in static storage.
12369 (This does not mean `static' in the C sense!) */
12370 TREE_STATIC (decl1) = 1;
12372 /* Set up current_class_type, and enter the scope of the class, if
12375 push_nested_class (ctype, 1);
12376 else if (DECL_STATIC_FUNCTION_P (decl1))
12377 push_nested_class (DECL_CONTEXT (decl1), 2);
12379 /* We must call push_template_decl after current_class_type is set
12380 up. (If we are processing inline definitions after exiting a
12381 class scope, current_class_type will be NULL_TREE until set above
12382 by push_nested_class.) */
12383 if (processing_template_decl)
12384 decl1 = push_template_decl (decl1);
12386 /* Record the decl so that the function name is defined.
12387 If we already have a decl for this name, and it is a FUNCTION_DECL,
12388 use the old decl. */
12389 if (!processing_template_decl && pre_parsed_p == 0)
12391 /* A specialization is not used to guide overload resolution. */
12392 if ((flag_guiding_decls
12393 || !DECL_TEMPLATE_SPECIALIZATION (decl1))
12394 && ! DECL_FUNCTION_MEMBER_P (decl1))
12395 decl1 = pushdecl (decl1);
12398 /* We need to set the DECL_CONTEXT. */
12399 if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1))
12400 DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1));
12401 /* And make sure we have enough default args. */
12402 check_default_args (decl1);
12404 DECL_MAIN_VARIANT (decl1) = decl1;
12405 fntype = TREE_TYPE (decl1);
12408 current_function_decl = decl1;
12410 if (DECL_INTERFACE_KNOWN (decl1))
12412 tree ctx = hack_decl_function_context (decl1);
12414 if (DECL_NOT_REALLY_EXTERN (decl1))
12415 DECL_EXTERNAL (decl1) = 0;
12417 if (ctx != NULL_TREE && DECL_THIS_INLINE (ctx)
12418 && TREE_PUBLIC (ctx))
12419 /* This is a function in a local class in an extern inline
12421 comdat_linkage (decl1);
12423 /* If this function belongs to an interface, it is public.
12424 If it belongs to someone else's interface, it is also external.
12425 It doesn't matter whether it's inline or not. */
12426 else if (interface_unknown == 0
12427 && (! DECL_TEMPLATE_INSTANTIATION (decl1)
12428 || flag_alt_external_templates))
12430 if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)
12431 || processing_template_decl)
12432 DECL_EXTERNAL (decl1)
12434 || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines));
12436 DECL_EXTERNAL (decl1) = 0;
12437 DECL_NOT_REALLY_EXTERN (decl1) = 0;
12438 DECL_INTERFACE_KNOWN (decl1) = 1;
12442 /* This is a definition, not a reference.
12443 So clear DECL_EXTERNAL. */
12444 DECL_EXTERNAL (decl1) = 0;
12446 if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1))
12447 && ! DECL_INTERFACE_KNOWN (decl1)
12448 /* Don't try to defer nested functions for now. */
12449 && ! hack_decl_function_context (decl1))
12450 DECL_DEFER_OUTPUT (decl1) = 1;
12452 DECL_INTERFACE_KNOWN (decl1) = 1;
12455 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1))
12457 if (TREE_CODE (fntype) == METHOD_TYPE)
12458 TREE_TYPE (decl1) = fntype
12459 = build_function_type (TREE_TYPE (fntype),
12460 TREE_CHAIN (TYPE_ARG_TYPES (fntype)));
12461 current_function_parms = TREE_CHAIN (current_function_parms);
12462 DECL_ARGUMENTS (decl1) = current_function_parms;
12465 restype = TREE_TYPE (fntype);
12469 /* If we're compiling a friend function, neither of the variables
12470 current_class_ptr nor current_class_type will have values. */
12471 if (! doing_friend)
12473 /* We know that this was set up by `grokclassfn'.
12474 We do not wait until `store_parm_decls', since evil
12475 parse errors may never get us to that point. Here
12476 we keep the consistency between `current_class_type'
12477 and `current_class_ptr'. */
12478 tree t = current_function_parms;
12480 my_friendly_assert (t != NULL_TREE
12481 && TREE_CODE (t) == PARM_DECL, 162);
12483 if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
12485 int i = suspend_momentary ();
12487 /* Fool build_indirect_ref. */
12488 current_class_ptr = NULL_TREE;
12489 current_class_ref = build_indirect_ref (t, NULL_PTR);
12490 current_class_ptr = t;
12491 resume_momentary (i);
12494 /* We're having a signature pointer here. */
12495 current_class_ref = current_class_ptr = t;
12501 current_class_ptr = current_class_ref = NULL_TREE;
12505 current_binding_level->parm_flag = 1;
12507 GNU_xref_function (decl1, current_function_parms);
12510 cplus_decl_attributes (decl1, NULL_TREE, attrs);
12511 make_function_rtl (decl1);
12513 /* Promote the value to int before returning it. */
12514 if (C_PROMOTING_INTEGER_TYPE_P (restype))
12515 restype = type_promotes_to (restype);
12517 /* If this fcn was already referenced via a block-scope `extern' decl
12518 (or an implicit decl), propagate certain information about the usage. */
12519 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1)))
12520 TREE_ADDRESSABLE (decl1) = 1;
12522 if (DECL_RESULT (decl1) == NULL_TREE)
12524 DECL_RESULT (decl1)
12525 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
12526 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (restype);
12527 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (restype);
12530 /* Allocate further tree nodes temporarily during compilation
12531 of this function only. Tiemann moved up here from bottom of fn. */
12532 /* If this is a nested function, then we must continue to allocate RTL
12533 on the permanent obstack in case we need to inline it later. */
12534 if (! hack_decl_function_context (decl1))
12535 temporary_allocation ();
12537 if (processing_template_decl)
12539 ++minimal_parse_mode;
12540 last_tree = DECL_SAVED_TREE (decl1)
12541 = build_nt (EXPR_STMT, void_zero_node);
12546 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1))
12547 && DECL_LANGUAGE (decl1) == lang_cplusplus)
12549 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
12550 ctor_label = NULL_TREE;
12554 dtor_label = NULL_TREE;
12555 if (DECL_CONSTRUCTOR_P (decl1))
12556 ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
12562 /* Called after store_parm_decls for a function-try-block. We need to update
12563 last_parm_cleanup_insn so that the base initializers for a constructor
12564 are run within this block, not before it. */
12567 expand_start_early_try_stmts ()
12569 expand_start_try_stmts ();
12570 last_parm_cleanup_insn = get_last_insn ();
12573 /* Store the parameter declarations into the current function declaration.
12574 This is called after parsing the parameter declarations, before
12575 digesting the body of the function.
12577 Also install to binding contour return value identifier, if any. */
12580 store_parm_decls ()
12582 register tree fndecl = current_function_decl;
12583 register tree parm;
12584 int parms_have_cleanups = 0;
12585 tree cleanups = NULL_TREE;
12587 /* This is either a chain of PARM_DECLs (when a prototype is used). */
12588 tree specparms = current_function_parms;
12590 /* This is a list of types declared among parms in a prototype. */
12591 tree parmtags = current_function_parm_tags;
12593 /* This is a chain of any other decls that came in among the parm
12594 declarations. If a parm is declared with enum {foo, bar} x;
12595 then CONST_DECLs for foo and bar are put here. */
12596 tree nonparms = NULL_TREE;
12598 if (toplevel_bindings_p ())
12599 fatal ("parse errors have confused me too much");
12601 /* Initialize RTL machinery. */
12602 init_function_start (fndecl, input_filename, lineno);
12604 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
12605 declare_function_name ();
12607 /* Create a binding level for the parms. */
12608 expand_start_bindings (0);
12610 if (specparms != NULL_TREE)
12612 /* This case is when the function was defined with an ANSI prototype.
12613 The parms already have decls, so we need not do anything here
12614 except record them as in effect
12615 and complain if any redundant old-style parm decls were written. */
12617 register tree next;
12619 /* Must clear this because it might contain TYPE_DECLs declared
12621 storedecls (NULL_TREE);
12623 for (parm = nreverse (specparms); parm; parm = next)
12625 next = TREE_CHAIN (parm);
12626 if (TREE_CODE (parm) == PARM_DECL)
12629 if (DECL_NAME (parm) == NULL_TREE)
12633 else if (TREE_CODE (TREE_TYPE (parm)) == VOID_TYPE)
12634 cp_error (ec_parameter_declared_void, parm);
12637 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
12638 A parameter is assumed not to have any side effects.
12639 If this should change for any reason, then this
12640 will have to wrap the bashed reference type in a save_expr.
12642 Also, if the parameter type is declared to be an X
12643 and there is an X(X&) constructor, we cannot lay it
12644 into the stack (any more), so we make this parameter
12645 look like it is really of reference type. Functions
12646 which pass parameters to this function will know to
12647 create a temporary in their frame, and pass a reference
12650 if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE
12651 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm))))
12652 SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm));
12656 if (! processing_template_decl
12657 && (cleanup = maybe_build_cleanup (parm), cleanup))
12659 expand_decl (parm);
12660 parms_have_cleanups = 1;
12662 /* Keep track of the cleanups. */
12663 cleanups = tree_cons (parm, cleanup, cleanups);
12668 /* If we find an enum constant or a type tag,
12669 put it aside for the moment. */
12670 TREE_CHAIN (parm) = NULL_TREE;
12671 nonparms = chainon (nonparms, parm);
12675 /* Get the decls in their original chain order
12676 and record in the function. This is all and only the
12677 PARM_DECLs that were pushed into scope by the loop above. */
12678 DECL_ARGUMENTS (fndecl) = getdecls ();
12680 storetags (chainon (parmtags, gettags ()));
12683 DECL_ARGUMENTS (fndecl) = NULL_TREE;
12685 /* Now store the final chain of decls for the arguments
12686 as the decl-chain of the current lexical scope.
12687 Put the enumerators in as well, at the front so that
12688 DECL_ARGUMENTS is not modified. */
12690 storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
12692 /* Initialize the RTL code for the function. */
12693 DECL_SAVED_INSNS (fndecl) = NULL_RTX;
12694 if (! processing_template_decl)
12695 expand_function_start (fndecl, parms_have_cleanups);
12697 current_function_parms_stored = 1;
12699 /* If this function is `main', emit a call to `__main'
12700 to run global initializers, etc. */
12701 if (DECL_MAIN_P (fndecl))
12702 expand_main_function ();
12704 /* Now that we have initialized the parms, we can start their
12705 cleanups. We cannot do this before, since expand_decl_cleanup
12706 should not be called before the parm can be used. */
12708 && ! processing_template_decl)
12710 for (cleanups = nreverse (cleanups); cleanups; cleanups = TREE_CHAIN (cleanups))
12712 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups), TREE_VALUE (cleanups)))
12713 cp_error (ec_parser_lost_in_parsing_declaration_of,
12714 TREE_PURPOSE (cleanups));
12718 /* Create a binding contour which can be used to catch
12719 cleanup-generated temporaries. Also, if the return value needs or
12720 has initialization, deal with that now. */
12721 if (parms_have_cleanups)
12724 expand_start_bindings (0);
12727 if (! processing_template_decl && flag_exceptions)
12729 /* Do the starting of the exception specifications, if we have any. */
12730 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
12731 expand_start_eh_spec ();
12734 last_parm_cleanup_insn = get_last_insn ();
12735 last_dtor_insn = get_last_insn ();
12738 /* Bind a name and initialization to the return value of
12739 the current function. */
12742 store_return_init (return_id, init)
12743 tree return_id, init;
12745 tree decl = DECL_RESULT (current_function_decl);
12748 /* Give this error as many times as there are occurrences,
12749 so that users can use Emacs compilation buffers to find
12750 and fix all such places. */
12751 cp_pedwarn (ec_does_not_permit_named_return_values);
12753 if (return_id != NULL_TREE)
12755 if (DECL_NAME (decl) == NULL_TREE)
12757 DECL_NAME (decl) = return_id;
12758 DECL_ASSEMBLER_NAME (decl) = return_id;
12761 cp_error (ec_return_identifier_already_in_place, decl);
12764 /* Can't let this happen for constructors. */
12765 if (DECL_CONSTRUCTOR_P (current_function_decl))
12767 cp_error (ec_cant_redefine_default_return_value_for_constructors);
12771 /* If we have a named return value, put that in our scope as well. */
12772 if (DECL_NAME (decl) != NULL_TREE)
12774 /* If this named return value comes in a register,
12775 put it in a pseudo-register. */
12776 if (DECL_REGISTER (decl))
12778 original_result_rtx = DECL_RTL (decl);
12779 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
12782 /* Let `cp_finish_decl' know that this initializer is ok. */
12783 DECL_INITIAL (decl) = init;
12786 if (minimal_parse_mode)
12787 add_tree (build_min_nt (RETURN_INIT, return_id,
12788 copy_to_permanent (init)));
12790 cp_finish_decl (decl, init, NULL_TREE, 0, 0);
12795 /* Finish up a function declaration and compile that function
12796 all the way to assembler language output. The free the storage
12797 for the function definition.
12799 This is called after parsing the body of the function definition.
12800 LINENO is the current line number.
12802 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12803 (and expand_end_bindings) must be made to take care of the binding
12804 contour for the base initializers. This is only relevant for
12807 NESTED is nonzero if we were in the middle of compiling another function
12808 when we started on this one. */
12811 finish_function (lineno, call_poplevel, nested)
12816 register tree fndecl = current_function_decl;
12817 tree fntype, ctype = NULL_TREE;
12818 rtx last_parm_insn, insns;
12819 /* Label to use if this function is supposed to return a value. */
12820 tree no_return_label = NULL_TREE;
12821 tree decls = NULL_TREE;
12823 /* When we get some parse errors, we can end up without a
12824 current_function_decl, so cope. */
12825 if (fndecl == NULL_TREE)
12828 if (! nested && function_depth > 1)
12831 fntype = TREE_TYPE (fndecl);
12833 /* TREE_READONLY (fndecl) = 1;
12834 This caused &foo to be of type ptr-to-const-function
12835 which then got a warning when stored in a ptr-to-function variable. */
12837 /* This happens on strange parse errors. */
12838 if (! current_function_parms_stored)
12841 store_parm_decls ();
12844 if (processing_template_decl)
12846 if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel)
12848 decls = getdecls ();
12849 expand_end_bindings (decls, decls != NULL_TREE, 0);
12850 poplevel (decls != NULL_TREE, 0, 0);
12855 if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12857 tree ttype = target_type (fntype);
12860 if (IS_AGGR_TYPE (ttype))
12861 /* Let debugger know it should output info for this type. */
12862 note_debug_info_needed (ttype);
12864 for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl))
12866 ttype = target_type (TREE_TYPE (parmdecl));
12867 if (IS_AGGR_TYPE (ttype))
12868 /* Let debugger know it should output info for this type. */
12869 note_debug_info_needed (ttype);
12873 /* Clean house because we will need to reorder insns here. */
12874 do_pending_stack_adjust ();
12878 tree binfo = TYPE_BINFO (current_class_type);
12879 tree cond = integer_one_node;
12881 tree in_charge_node = lookup_name (in_charge_identifier, 0);
12883 int ok_to_optimize_dtor = 0;
12884 int empty_dtor = get_last_insn () == last_dtor_insn;
12886 if (current_function_assigns_this)
12887 cond = build (NE_EXPR, boolean_type_node,
12888 current_class_ptr, integer_zero_node);
12891 int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type);
12893 /* If this destructor is empty, then we don't need to check
12894 whether `this' is NULL in some cases. */
12895 if ((flag_this_is_variable & 1) == 0)
12896 ok_to_optimize_dtor = 1;
12897 else if (empty_dtor)
12898 ok_to_optimize_dtor
12899 = (n_baseclasses == 0
12900 || (n_baseclasses == 1
12901 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0))));
12904 /* These initializations might go inline. Protect
12905 the binding level of the parms. */
12907 expand_start_bindings (0);
12909 if (current_function_assigns_this)
12911 current_function_assigns_this = 0;
12912 current_function_just_assigned_this = 0;
12915 /* Generate the code to call destructor on base class.
12916 If this destructor belongs to a class with virtual
12917 functions, then set the virtual function table
12918 pointer to represent the type of our base class. */
12920 /* This side-effect makes call to `build_delete' generate the
12921 code we have to have at the end of this destructor. */
12922 TYPE_HAS_DESTRUCTOR (current_class_type) = 0;
12924 /* These are two cases where we cannot delegate deletion. */
12925 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)
12926 || TYPE_GETS_REG_DELETE (current_class_type))
12927 exprstmt = build_delete (current_class_type, current_class_ref, integer_zero_node,
12928 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
12930 exprstmt = build_delete (current_class_type, current_class_ref, in_charge_node,
12931 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
12933 /* If we did not assign to this, then `this' is non-zero at
12934 the end of a destructor. As a special optimization, don't
12935 emit test if this is an empty destructor. If it does nothing,
12936 it does nothing. If it calls a base destructor, the base
12937 destructor will perform the test. */
12939 if (exprstmt != error_mark_node
12940 && (TREE_CODE (exprstmt) != NOP_EXPR
12941 || TREE_OPERAND (exprstmt, 0) != integer_zero_node
12942 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)))
12944 expand_label (dtor_label);
12945 if (cond != integer_one_node)
12946 expand_start_cond (cond, 0);
12947 if (exprstmt != void_zero_node)
12948 /* Don't call `expand_expr_stmt' if we're not going to do
12949 anything, since -Wall will give a diagnostic. */
12950 expand_expr_stmt (exprstmt);
12952 /* Run destructor on all virtual baseclasses. */
12953 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
12955 tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type)));
12956 expand_start_cond (build (BIT_AND_EXPR, integer_type_node,
12957 in_charge_node, integer_two_node), 0);
12960 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases)))
12962 tree vb = get_vbase
12963 (BINFO_TYPE (vbases),
12964 TYPE_BINFO (current_class_type));
12966 (build_scoped_method_call
12967 (current_class_ref, vb, dtor_identifier,
12968 build_expr_list (NULL_TREE, integer_zero_node)));
12970 vbases = TREE_CHAIN (vbases);
12972 expand_end_cond ();
12975 do_pending_stack_adjust ();
12976 if (cond != integer_one_node)
12977 expand_end_cond ();
12980 TYPE_HAS_DESTRUCTOR (current_class_type) = 1;
12982 virtual_size = c_sizeof (current_class_type);
12984 /* At the end, call delete if that's what's requested. */
12986 /* FDIS sez: At the point of definition of a virtual destructor
12987 (including an implicit definition), non-placement operator
12988 delete shall be looked up in the scope of the destructor's
12989 class and if found shall be accessible and unambiguous.
12991 This is somewhat unclear, but I take it to mean that if the
12992 class only defines placement deletes we don't do anything here.
12993 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
12994 for us if they ever try to delete one of these. */
12996 if (TYPE_GETS_REG_DELETE (current_class_type)
12997 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
12998 exprstmt = build_op_delete_call
12999 (DELETE_EXPR, current_class_ptr, virtual_size,
13000 LOOKUP_NORMAL | LOOKUP_SPECULATIVELY, NULL_TREE);
13002 exprstmt = NULL_TREE;
13006 cond = build (BIT_AND_EXPR, integer_type_node,
13007 in_charge_node, integer_one_node);
13008 expand_start_cond (cond, 0);
13009 expand_expr_stmt (exprstmt);
13010 expand_end_cond ();
13013 /* End of destructor. */
13014 expand_end_bindings (NULL_TREE, getdecls () != NULL_TREE, 0);
13015 poplevel (2, 0, 0); /* XXX change to 1 */
13017 /* Back to the top of destructor. */
13018 /* Don't execute destructor code if `this' is NULL. */
13022 /* If the dtor is empty, and we know there is not possible way we
13023 could use any vtable entries, before they are possibly set by
13024 a base class dtor, we don't have to setup the vtables, as we
13025 know that any base class dtoring will set up any vtables it
13026 needs. We avoid MI, because one base class dtor can do a
13027 virtual dispatch to an overridden function that would need to
13028 have a non-related vtable set up, we cannot avoid setting up
13029 vtables in that case. We could change this to see if there is
13030 just one vtable. */
13031 if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type))
13033 /* Make all virtual function table pointers in non-virtual base
13034 classes point to CURRENT_CLASS_TYPE's virtual function
13036 expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_ptr);
13038 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
13039 expand_indirect_vtbls_init (binfo, current_class_ref, current_class_ptr);
13042 if (! ok_to_optimize_dtor)
13044 cond = build_binary_op (NE_EXPR,
13045 current_class_ptr, integer_zero_node, 1);
13046 expand_start_cond (cond, 0);
13049 insns = get_insns ();
13052 last_parm_insn = get_first_nonparm_insn ();
13053 if (last_parm_insn == NULL_RTX)
13054 last_parm_insn = get_last_insn ();
13056 last_parm_insn = previous_insn (last_parm_insn);
13058 emit_insns_after (insns, last_parm_insn);
13060 if (! ok_to_optimize_dtor)
13061 expand_end_cond ();
13063 else if (current_function_assigns_this)
13065 /* Does not need to call emit_base_init, because
13066 that is done (if needed) just after assignment to this
13069 if (DECL_CONSTRUCTOR_P (current_function_decl))
13071 end_protect_partials ();
13072 expand_label (ctor_label);
13073 ctor_label = NULL_TREE;
13077 decls = getdecls ();
13078 expand_end_bindings (decls, decls != NULL_TREE, 0);
13079 poplevel (decls != NULL_TREE, 0, 0);
13081 /* c_expand_return knows to return 'this' from a constructor. */
13082 c_expand_return (NULL_TREE);
13084 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl))) != VOID_TYPE
13085 && return_label != NULL_RTX)
13086 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
13088 current_function_assigns_this = 0;
13089 current_function_just_assigned_this = 0;
13090 base_init_expr = NULL_TREE;
13092 else if (DECL_CONSTRUCTOR_P (fndecl))
13094 tree cond = NULL_TREE, thenclause = NULL_TREE;
13095 /* Allow constructor for a type to get a new instance of the object
13096 using `build_new'. */
13097 tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type);
13098 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE;
13100 DECL_RETURNS_FIRST_ARG (fndecl) = 1;
13102 if (flag_this_is_variable > 0)
13104 cond = build_binary_op (EQ_EXPR,
13105 current_class_ptr, integer_zero_node, 1);
13106 thenclause = build_modify_expr (current_class_ptr, NOP_EXPR,
13107 build_new (NULL_TREE, current_class_type, void_type_node, 0));
13110 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals;
13114 if (flag_this_is_variable > 0)
13116 expand_start_cond (cond, 0);
13117 expand_expr_stmt (thenclause);
13118 expand_end_cond ();
13121 /* Emit insns from `emit_base_init' which sets up virtual
13122 function table pointer(s). */
13123 if (base_init_expr)
13125 expand_expr_stmt (base_init_expr);
13126 base_init_expr = NULL_TREE;
13129 insns = get_insns ();
13132 /* This is where the body of the constructor begins. */
13134 emit_insns_after (insns, last_parm_cleanup_insn);
13136 end_protect_partials ();
13138 /* This is where the body of the constructor ends. */
13139 expand_label (ctor_label);
13140 ctor_label = NULL_TREE;
13144 decls = getdecls ();
13145 expand_end_bindings (decls, decls != NULL_TREE, 0);
13146 poplevel (decls != NULL_TREE, 1, 0);
13149 /* c_expand_return knows to return 'this' from a constructor. */
13150 c_expand_return (NULL_TREE);
13152 current_function_assigns_this = 0;
13153 current_function_just_assigned_this = 0;
13155 else if (DECL_MAIN_P (fndecl))
13157 /* Make it so that `main' always returns 0 by default. */
13159 c_expand_return (integer_one_node);
13161 c_expand_return (integer_zero_node);
13164 else if (return_label != NULL_RTX
13165 && current_function_return_value == NULL_TREE
13166 && ! DECL_NAME (DECL_RESULT (current_function_decl)))
13167 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
13169 if (flag_exceptions)
13170 expand_exception_blocks ();
13172 /* If this function is supposed to return a value, ensure that
13173 we do not fall into the cleanups by mistake. The end of our
13174 function will look like this:
13176 user code (may have return stmt somewhere)
13177 goto no_return_label
13182 NOTE_INSN_FUNCTION_END
13186 If the user omits a return stmt in the USER CODE section, we
13187 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13188 Otherwise, we won't. */
13189 if (no_return_label)
13191 DECL_CONTEXT (no_return_label) = fndecl;
13192 DECL_INITIAL (no_return_label) = error_mark_node;
13193 DECL_SOURCE_FILE (no_return_label) = input_filename;
13194 DECL_SOURCE_LINE (no_return_label) = lineno;
13195 expand_goto (no_return_label);
13200 /* Remove the binding contour which is used
13201 to catch cleanup-generated temporaries. */
13202 expand_end_bindings (0, 0, 0);
13203 poplevel (0, 0, 0);
13205 /* Emit label at beginning of cleanup code for parameters. */
13206 emit_label (cleanup_label);
13209 /* Get return value into register if that's where it's supposed to be. */
13210 if (original_result_rtx)
13211 fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx);
13213 /* Finish building code that will trigger warnings if users forget
13214 to make their functions return values. */
13215 if (no_return_label || cleanup_label)
13216 emit_jump (return_label);
13217 if (no_return_label)
13219 /* We don't need to call `expand_*_return' here because we
13220 don't need any cleanups here--this path of code is only
13221 for error checking purposes. */
13222 expand_label (no_return_label);
13225 /* Generate rtl for function exit. */
13226 expand_function_end (input_filename, lineno, 1);
13229 /* This must come after expand_function_end because cleanups might
13230 have declarations (from inline functions) that need to go into
13231 this function's blocks. */
13232 if (current_binding_level->parm_flag != 1)
13233 my_friendly_abort (122);
13234 poplevel (1, 0, 1);
13236 /* Reset scope for C++: if we were in the scope of a class,
13237 then when we finish this function, we are not longer so.
13238 This cannot be done until we know for sure that no more
13239 class members will ever be referenced in this function
13240 (i.e., calls to destructors). */
13241 if (current_class_name)
13243 ctype = current_class_type;
13244 pop_nested_class (1);
13247 /* Must mark the RESULT_DECL as being in this function. */
13248 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
13250 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13251 to the FUNCTION_DECL node itself. */
13252 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
13254 if (! processing_template_decl)
13256 int saved_flag_keep_inline_functions =
13257 flag_keep_inline_functions;
13259 /* So we can tell if jump_optimize sets it to 1. */
13262 if (DECL_CONTEXT (fndecl) != NULL_TREE
13263 && hack_decl_function_context (fndecl))
13264 /* Trick rest_of_compilation into not deferring output of this
13265 function, even if it is inline, since the rtl_obstack for
13266 this function is the function_obstack of the enclosing
13267 function and will be deallocated when the enclosing
13268 function is gone. See save_tree_status. */
13269 flag_keep_inline_functions = 1;
13271 /* Run the optimizers and output the assembler code for this
13274 if (DECL_ARTIFICIAL (fndecl))
13276 /* Do we really *want* to inline this synthesized method? */
13278 int save_fif = flag_inline_functions;
13279 flag_inline_functions = 1;
13281 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13282 will check our size. */
13283 DECL_INLINE (fndecl) = 0;
13285 rest_of_compilation (fndecl);
13286 flag_inline_functions = save_fif;
13289 rest_of_compilation (fndecl);
13291 flag_keep_inline_functions = saved_flag_keep_inline_functions;
13293 if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl))
13295 /* Set DECL_EXTERNAL so that assemble_external will be called as
13296 necessary. We'll clear it again in finish_file. */
13297 if (! DECL_EXTERNAL (fndecl))
13298 DECL_NOT_REALLY_EXTERN (fndecl) = 1;
13299 DECL_EXTERNAL (fndecl) = 1;
13300 mark_inline_for_output (fndecl);
13303 if (ctype && TREE_ASM_WRITTEN (fndecl))
13304 note_debug_info_needed (ctype);
13306 current_function_returns_null |= can_reach_end;
13308 /* Since we don't normally go through c_expand_return for constructors,
13309 this normally gets the wrong value.
13310 Also, named return values have their return codes emitted after
13311 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13312 if (DECL_CONSTRUCTOR_P (fndecl)
13313 || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE)
13314 current_function_returns_null = 0;
13316 if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
13317 cp_warning (ec_noreturn_function_does_return, fndecl);
13318 else if ((warn_return_type || pedantic)
13319 && current_function_returns_null
13320 && TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE)
13322 /* If this function returns non-void and control can drop through,
13324 cp_warning (ec_control_reaches_end_of_nonvoid_function, fndecl);
13326 /* With just -W, complain only if function returns both with
13327 and without a value. */
13328 else if (extra_warnings
13329 && current_function_returns_value && current_function_returns_null)
13330 cp_warning (ec_this_function_may_return_with_or_without_a_value);
13335 /* Free all the tree nodes making up this function. */
13336 /* Switch back to allocating nodes permanently
13337 until we start another function. */
13338 if (processing_template_decl)
13340 --minimal_parse_mode;
13341 DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl));
13345 permanent_allocation (1);
13347 if (DECL_SAVED_INSNS (fndecl) == NULL_RTX)
13351 /* Stop pointing to the local nodes about to be freed. */
13352 /* But DECL_INITIAL must remain nonzero so we know this
13353 was an actual function definition. */
13354 DECL_INITIAL (fndecl) = error_mark_node;
13355 for (t = DECL_ARGUMENTS (fndecl); t; t = TREE_CHAIN (t))
13356 DECL_RTL (t) = DECL_INCOMING_RTL (t) = NULL_RTX;
13359 if (DECL_STATIC_CONSTRUCTOR (fndecl))
13360 static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors);
13361 if (DECL_STATIC_DESTRUCTOR (fndecl))
13362 static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors);
13366 /* Let the error reporting routines know that we're outside a
13367 function. For a nested function, this value is used in
13368 pop_cp_function_context and then reset via pop_function_context. */
13369 current_function_decl = NULL_TREE;
13372 named_label_uses = NULL;
13373 current_class_ptr = NULL_TREE;
13374 current_class_ref = NULL_TREE;
13377 /* Create the FUNCTION_DECL for a function definition.
13378 LINE1 is the line number that the definition absolutely begins on.
13379 LINE2 is the line number that the name of the function appears on.
13380 DECLSPECS and DECLARATOR are the parts of the declaration;
13381 they describe the return type and the name of the function,
13382 but twisted together in a fashion that parallels the syntax of C.
13384 This function creates a binding context for the function body
13385 as well as setting up the FUNCTION_DECL in current_function_decl.
13387 Returns a FUNCTION_DECL on success.
13389 If the DECLARATOR is not suitable for a function (it defines a datum
13390 instead), we return 0, which tells yyparse to report a parse error.
13392 May return void_type_node indicating that this method is actually
13393 a friend. See grokfield for more details.
13395 Came here with a `.pushlevel' .
13397 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13398 CHANGES TO CODE IN `grokfield'. */
13401 start_method (declspecs, declarator)
13402 tree declarator, declspecs;
13404 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
13407 /* Something too ugly to handle. */
13408 if (fndecl == NULL_TREE)
13411 /* Pass friends other than inline friend functions back. */
13412 if (fndecl == void_type_node)
13415 if (TREE_CODE (fndecl) != FUNCTION_DECL)
13416 /* Not a function, tell parser to report parse error. */
13419 if (IS_SIGNATURE (current_class_type))
13420 IS_DEFAULT_IMPLEMENTATION (fndecl) = 1;
13422 if (DECL_IN_AGGR_P (fndecl))
13424 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type)
13426 if (DECL_CONTEXT (fndecl)
13427 && TREE_CODE( DECL_CONTEXT (fndecl)) != NAMESPACE_DECL)
13428 cp_error (ec_is_already_defined_in_class, fndecl,
13429 TYPE_NAME_STRING (DECL_CONTEXT (fndecl)));
13431 return void_type_node;
13434 DECL_THIS_INLINE (fndecl) = 1;
13436 if (flag_default_inline)
13437 DECL_INLINE (fndecl) = 1;
13439 /* We process method specializations in finish_struct_1. */
13440 if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl))
13441 fndecl = push_template_decl (fndecl);
13443 /* We read in the parameters on the maybepermanent_obstack,
13444 but we won't be getting back to them until after we
13445 may have clobbered them. So the call to preserve_data
13446 will keep them safe. */
13449 if (! DECL_FRIEND_P (fndecl))
13451 if (TREE_CHAIN (fndecl))
13453 fndecl = copy_node (fndecl);
13454 TREE_CHAIN (fndecl) = NULL_TREE;
13457 if (DECL_CONSTRUCTOR_P (fndecl))
13459 if (! grok_ctor_properties (current_class_type, fndecl))
13460 return void_type_node;
13462 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl)))
13463 grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0);
13466 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0);
13468 /* Make a place for the parms */
13470 current_binding_level->parm_flag = 1;
13472 DECL_IN_AGGR_P (fndecl) = 1;
13476 /* Go through the motions of finishing a function definition.
13477 We don't compile this method until after the whole class has
13480 FINISH_METHOD must return something that looks as though it
13481 came from GROKFIELD (since we are defining a method, after all).
13483 This is called after parsing the body of the function definition.
13484 STMTS is the chain of statements that makes up the function body.
13486 DECL is the ..._DECL that `start_method' provided. */
13489 finish_method (decl)
13492 register tree fndecl = decl;
13495 register tree link;
13497 if (decl == void_type_node)
13500 old_initial = DECL_INITIAL (fndecl);
13502 /* Undo the level for the parms (from start_method).
13503 This is like poplevel, but it causes nothing to be
13504 saved. Saving information here confuses symbol-table
13505 output routines. Besides, this information will
13506 be correctly output when this method is actually
13509 /* Clear out the meanings of the local variables of this level;
13510 also record in each decl which block it belongs to. */
13512 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
13514 if (DECL_NAME (link) != NULL_TREE)
13515 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0;
13516 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
13517 DECL_CONTEXT (link) = NULL_TREE;
13520 /* Restore all name-meanings of the outer levels
13521 that were shadowed by this level. */
13523 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
13524 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
13525 for (link = current_binding_level->class_shadowed;
13526 link; link = TREE_CHAIN (link))
13527 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
13528 for (link = current_binding_level->type_shadowed;
13529 link; link = TREE_CHAIN (link))
13530 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link));
13532 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
13533 (HOST_WIDE_INT) current_binding_level->level_chain,
13534 current_binding_level->parm_flag,
13535 current_binding_level->keep);
13537 poplevel (0, 0, 0);
13539 DECL_INITIAL (fndecl) = old_initial;
13541 /* We used to check if the context of FNDECL was different from
13542 current_class_type as another way to get inside here. This didn't work
13543 for String.cc in libg++. */
13544 if (DECL_FRIEND_P (fndecl))
13546 CLASSTYPE_INLINE_FRIENDS (current_class_type)
13547 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
13548 decl = void_type_node;
13554 /* Called when a new struct TYPE is defined.
13555 If this structure or union completes the type of any previous
13556 variable declaration, lay it out and output its rtl. */
13559 hack_incomplete_structures (type)
13564 if (current_binding_level->incomplete == NULL_TREE)
13567 if (!type) /* Don't do this for class templates. */
13570 for (list = ¤t_binding_level->incomplete; *list; )
13572 tree decl = TREE_VALUE (*list);
13573 if ((decl && TREE_TYPE (decl) == type)
13574 || (TREE_TYPE (decl)
13575 && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
13576 && TREE_TYPE (TREE_TYPE (decl)) == type))
13578 int toplevel = toplevel_bindings_p ();
13579 if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
13580 && TREE_TYPE (TREE_TYPE (decl)) == type)
13581 layout_type (TREE_TYPE (decl));
13582 layout_decl (decl, 0);
13583 rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
13587 expand_decl (decl);
13588 cleanup = maybe_build_cleanup (decl);
13589 expand_decl_init (decl);
13590 if (! expand_decl_cleanup (decl, cleanup))
13591 cp_error (ec_parser_lost_in_parsing_declaration_of,
13594 *list = TREE_CHAIN (*list);
13597 list = &TREE_CHAIN (*list);
13601 /* If DECL is of a type which needs a cleanup, build that cleanup here.
13602 See build_delete for information about AUTO_DELETE.
13604 Don't build these on the momentary obstack; they must live
13605 the life of the binding contour. */
13608 maybe_build_cleanup_1 (decl, auto_delete)
13609 tree decl, auto_delete;
13611 tree type = TREE_TYPE (decl);
13612 if (TYPE_NEEDS_DESTRUCTOR (type))
13614 int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
13617 if (TREE_CODE (decl) != PARM_DECL)
13618 temp = suspend_momentary ();
13620 if (TREE_CODE (type) == ARRAY_TYPE)
13624 mark_addressable (decl);
13625 rval = build_unary_op (ADDR_EXPR, decl, 0);
13628 /* Optimize for space over speed here. */
13629 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
13630 || flag_expensive_optimizations)
13631 flags |= LOOKUP_NONVIRTUAL;
13633 rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0);
13635 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
13636 && ! TYPE_HAS_DESTRUCTOR (type))
13637 rval = build_compound_expr (expr_tree_cons (NULL_TREE, rval,
13638 build_expr_list (NULL_TREE, build_vbase_delete (type, decl))));
13640 if (TREE_CODE (decl) != PARM_DECL)
13641 resume_momentary (temp);
13648 /* If DECL is of a type which needs a cleanup, build that cleanup
13649 here. The cleanup does free the storage with a call to delete. */
13652 maybe_build_cleanup_and_delete (decl)
13655 return maybe_build_cleanup_1 (decl, integer_three_node);
13658 /* If DECL is of a type which needs a cleanup, build that cleanup
13659 here. The cleanup does not free the storage with a call a delete. */
13662 maybe_build_cleanup (decl)
13665 return maybe_build_cleanup_1 (decl, integer_two_node);
13668 /* Expand a C++ expression at the statement level.
13669 This is needed to ferret out nodes which have UNKNOWN_TYPE.
13670 The C++ type checker should get all of these out when
13671 expressions are combined with other, type-providing, expressions,
13672 leaving only orphan expressions, such as:
13674 &class::bar; / / takes its address, but does nothing with it. */
13677 cplus_expand_expr_stmt (exp)
13680 if (processing_template_decl)
13682 add_tree (build_min_nt (EXPR_STMT, exp));
13686 /* Arrange for all temps to disappear. */
13687 expand_start_target_temps ();
13689 if (TREE_TYPE (exp) == unknown_type_node)
13691 if (TREE_CODE (exp) == ADDR_EXPR || TREE_CODE (exp) == TREE_LIST)
13692 cp_error (ec_address_of_overloaded_function_with_no_contextual_type_information);
13693 else if (TREE_CODE (exp) == COMPONENT_REF)
13694 cp_warning (ec_useless_reference_to_a_member_function_name_did_you_forget_the);
13698 if (TREE_CODE (exp) == FUNCTION_DECL)
13700 cp_warning (ec_reference_not_call_to_function, exp);
13701 cp_warning (ec_at_this_point_in_file);
13705 /* We should do this eventually, but right now this causes regex.o from
13706 libg++ to miscompile, and tString to core dump. */
13707 exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
13710 /* Strip unused implicit INDIRECT_REFs of references. */
13711 if (TREE_CODE (exp) == INDIRECT_REF
13712 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 0))) == REFERENCE_TYPE)
13713 exp = TREE_OPERAND (exp, 0);
13715 /* If we don't do this, we end up down inside expand_expr
13716 trying to do TYPE_MODE on the ERROR_MARK, and really
13717 go outside the bounds of the type. */
13718 if (exp != error_mark_node)
13719 expand_expr_stmt (break_out_cleanups (exp));
13722 /* Clean up any pending cleanups. This happens when a function call
13723 returns a cleanup-needing value that nobody uses. */
13724 expand_end_target_temps ();
13727 /* When a stmt has been parsed, this function is called.
13729 Currently, this function only does something within a
13730 constructor's scope: if a stmt has just assigned to this,
13731 and we are in a derived class, we call `emit_base_init'. */
13736 extern struct nesting *cond_stack, *loop_stack, *case_stack;
13739 if (current_function_assigns_this
13740 || ! current_function_just_assigned_this)
13742 if (DECL_CONSTRUCTOR_P (current_function_decl))
13744 /* Constructors must wait until we are out of control
13745 zones before calling base constructors. */
13746 if (cond_stack || loop_stack || case_stack)
13748 expand_expr_stmt (base_init_expr);
13749 check_base_init (current_class_type);
13751 current_function_assigns_this = 1;
13754 /* Change a static member function definition into a FUNCTION_TYPE, instead
13755 of the METHOD_TYPE that we create when it's originally parsed.
13757 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13758 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13759 other decls. Either pass the addresses of local variables or NULL. */
13762 revert_static_member_fn (decl, fn, argtypes)
13763 tree *decl, *fn, *argtypes;
13766 tree function = fn ? *fn : TREE_TYPE (*decl);
13767 tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function);
13769 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args))))
13770 cp_error (ec_static_member_function_declared_const, *decl);
13771 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args))))
13772 cp_error (ec_static_member_function_declared_volatile, *decl);
13774 args = TREE_CHAIN (args);
13775 tmp = build_function_type (TREE_TYPE (function), args);
13776 tmp = build_type_variant (tmp, TYPE_READONLY (function),
13777 TYPE_VOLATILE (function));
13778 tmp = build_exception_variant (tmp,
13779 TYPE_RAISES_EXCEPTIONS (function));
13780 TREE_TYPE (*decl) = tmp;
13781 if (DECL_ARGUMENTS (*decl))
13782 DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl));
13783 DECL_STATIC_FUNCTION_P (*decl) = 1;
13791 id_in_current_class (id)
13794 return !!purpose_member (id, class_binding_level->class_shadowed);
13801 int warn_about_return_type;
13803 int just_assigned_this;
13805 int temp_name_counter;
13807 tree shadowed_labels;
13810 rtx last_dtor_insn;
13811 rtx last_parm_cleanup_insn;
13812 tree base_init_list;
13813 tree member_init_list;
13814 tree base_init_expr;
13815 tree current_class_ptr;
13816 tree current_class_ref;
13818 struct cp_function *next;
13819 struct binding_level *binding_level;
13820 int static_labelno;
13823 static struct cp_function *cp_function_chain;
13825 extern int temp_name_counter;
13827 /* Save and reinitialize the variables
13828 used during compilation of a C++ function. */
13831 push_cp_function_context (context)
13834 struct cp_function *p
13835 = (struct cp_function *) xmalloc (sizeof (struct cp_function));
13837 push_function_context_to (context);
13839 p->next = cp_function_chain;
13840 cp_function_chain = p;
13842 p->named_labels = named_labels;
13843 p->shadowed_labels = shadowed_labels;
13844 p->returns_value = current_function_returns_value;
13845 p->returns_null = current_function_returns_null;
13846 p->warn_about_return_type = warn_about_return_type;
13847 p->binding_level = current_binding_level;
13848 p->ctor_label = ctor_label;
13849 p->dtor_label = dtor_label;
13850 p->last_dtor_insn = last_dtor_insn;
13851 p->last_parm_cleanup_insn = last_parm_cleanup_insn;
13852 p->assigns_this = current_function_assigns_this;
13853 p->just_assigned_this = current_function_just_assigned_this;
13854 p->parms_stored = current_function_parms_stored;
13855 p->result_rtx = original_result_rtx;
13856 p->base_init_expr = base_init_expr;
13857 p->temp_name_counter = temp_name_counter;
13858 p->base_init_list = current_base_init_list;
13859 p->member_init_list = current_member_init_list;
13860 p->current_class_ptr = current_class_ptr;
13861 p->current_class_ref = current_class_ref;
13862 p->static_labelno = static_labelno;
13865 /* Restore the variables used during compilation of a C++ function. */
13868 pop_cp_function_context (context)
13871 struct cp_function *p = cp_function_chain;
13874 /* Bring back all the labels that were shadowed. */
13875 for (link = shadowed_labels; link; link = TREE_CHAIN (link))
13876 if (DECL_NAME (TREE_VALUE (link)) != 0)
13877 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)),
13878 TREE_VALUE (link));
13880 pop_function_context_from (context);
13882 cp_function_chain = p->next;
13884 named_labels = p->named_labels;
13885 shadowed_labels = p->shadowed_labels;
13886 current_function_returns_value = p->returns_value;
13887 current_function_returns_null = p->returns_null;
13888 warn_about_return_type = p->warn_about_return_type;
13889 current_binding_level = p->binding_level;
13890 ctor_label = p->ctor_label;
13891 dtor_label = p->dtor_label;
13892 last_dtor_insn = p->last_dtor_insn;
13893 last_parm_cleanup_insn = p->last_parm_cleanup_insn;
13894 current_function_assigns_this = p->assigns_this;
13895 current_function_just_assigned_this = p->just_assigned_this;
13896 current_function_parms_stored = p->parms_stored;
13897 original_result_rtx = p->result_rtx;
13898 base_init_expr = p->base_init_expr;
13899 temp_name_counter = p->temp_name_counter;
13900 current_base_init_list = p->base_init_list;
13901 current_member_init_list = p->member_init_list;
13902 current_class_ptr = p->current_class_ptr;
13903 current_class_ref = p->current_class_ref;
13904 static_labelno = p->static_labelno;
13912 return function_depth != 0;