1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
|
/* Definitions for c-common.c.
Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_C_COMMON_H
#define GCC_C_COMMON_H
#include "splay-tree.h"
#include "cpplib.h"
#include "ggc.h"
/* In order for the format checking to accept the C frontend
diagnostic framework extensions, you must include this file before
diagnostic-core.h, not after. The C front end formats are a subset of those
for C++, so they are the appropriate set to use in common code;
cp-tree.h overrides this for C++. */
#if defined(GCC_DIAGNOSTIC_CORE_H)
#error \
In order for the format checking to accept the C front end diagnostic \
framework extensions, you must include this file before diagnostic-core.h \
never after.
#endif
#ifndef GCC_DIAG_STYLE
#define GCC_DIAG_STYLE __gcc_cdiag__
#endif
#include "diagnostic-core.h"
/* Usage of TREE_LANG_FLAG_?:
0: TREE_NEGATED_INT (in INTEGER_CST).
IDENTIFIER_MARKED (used by search routines).
DECL_PRETTY_FUNCTION_P (in VAR_DECL)
C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C)
1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C)
2: unused
3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
4: unused
*/
/* Reserved identifiers. This is the union of all the keywords for C,
C++, and Objective-C. All the type modifiers have to be in one
block at the beginning, because they are used as mask bits. There
are 27 type modifiers; if we add many more we will have to redesign
the mask mechanism. */
enum rid
{
/* Modifiers: */
/* C, in empirical order of frequency. */
RID_STATIC = 0,
RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
/* C extensions */
RID_COMPLEX, RID_THREAD, RID_SAT,
/* C++ */
RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
/* ObjC ("PQ" reserved words - they do not appear after a '@' and
are keywords only in specific contexts) */
RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
/* ObjC ("PATTR" reserved words - they do not appear after a '@'
and are keywords only as property attributes) */
RID_GETTER, RID_SETTER,
RID_READONLY, RID_READWRITE,
RID_ASSIGN, RID_RETAIN, RID_COPY,
RID_NONATOMIC,
/* C (reserved and imaginary types not implemented, so any use is a
syntax error) */
RID_IMAGINARY,
/* C */
RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
RID_INT128,
RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
RID_SIZEOF,
/* C extensions */
RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
RID_TYPES_COMPATIBLE_P,
RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
RID_FRACT, RID_ACCUM,
/* This means to warn that this is a C++ keyword, and then treat it
as a normal identifier. */
RID_CXX_COMPAT_WARN,
/* Too many ways of getting the name of a function as a string */
RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
/* C++ (some of these are keywords in Objective-C as well, but only
if they appear after a '@') */
RID_BOOL, RID_WCHAR, RID_CLASS,
RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
RID_TEMPLATE, RID_NULL, RID_CATCH,
RID_DELETE, RID_FALSE, RID_NAMESPACE,
RID_NEW, RID_OFFSETOF, RID_OPERATOR,
RID_THIS, RID_THROW, RID_TRUE,
RID_TRY, RID_TYPENAME, RID_TYPEID,
RID_USING, RID_CHAR16, RID_CHAR32,
/* casts */
RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
/* C++ extensions */
RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR,
RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN,
RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY,
RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR,
RID_IS_ABSTRACT, RID_IS_BASE_OF,
RID_IS_CONVERTIBLE_TO, RID_IS_CLASS,
RID_IS_EMPTY, RID_IS_ENUM,
RID_IS_POD, RID_IS_POLYMORPHIC,
RID_IS_STD_LAYOUT, RID_IS_TRIVIAL,
RID_IS_UNION, RID_IS_LITERAL_TYPE,
/* C++0x */
RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
/* Objective-C ("AT" reserved words - they are only keywords when
they follow '@') */
RID_AT_ENCODE, RID_AT_END,
RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
RID_AT_PROTOCOL, RID_AT_SELECTOR,
RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
RID_AT_INTERFACE,
RID_AT_IMPLEMENTATION,
/* Named address support, mapping the keyword to a particular named address
number. Named address space 0 is reserved for the generic address. If
there are more than 254 named addresses, the addr_space_t type will need
to be grown from an unsigned char to unsigned short. */
RID_ADDR_SPACE_0, /* generic address */
RID_ADDR_SPACE_1,
RID_ADDR_SPACE_2,
RID_ADDR_SPACE_3,
RID_ADDR_SPACE_4,
RID_ADDR_SPACE_5,
RID_ADDR_SPACE_6,
RID_ADDR_SPACE_7,
RID_ADDR_SPACE_8,
RID_ADDR_SPACE_9,
RID_ADDR_SPACE_10,
RID_ADDR_SPACE_11,
RID_ADDR_SPACE_12,
RID_ADDR_SPACE_13,
RID_ADDR_SPACE_14,
RID_ADDR_SPACE_15,
RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
RID_MAX,
RID_FIRST_MODIFIER = RID_STATIC,
RID_LAST_MODIFIER = RID_ONEWAY,
RID_FIRST_CXX0X = RID_CONSTEXPR,
RID_LAST_CXX0X = RID_STATIC_ASSERT,
RID_FIRST_AT = RID_AT_ENCODE,
RID_LAST_AT = RID_AT_IMPLEMENTATION,
RID_FIRST_PQ = RID_IN,
RID_LAST_PQ = RID_ONEWAY,
RID_FIRST_PATTR = RID_GETTER,
RID_LAST_PATTR = RID_NONATOMIC
};
#define OBJC_IS_AT_KEYWORD(rid) \
((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
(unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
#define OBJC_IS_PQ_KEYWORD(rid) \
((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
(unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
#define OBJC_IS_PATTR_KEYWORD(rid) \
((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
(unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)
/* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
'class') which are shared in a subtle way between Objective-C and
C++. When the lexer is lexing in Objective-C/Objective-C++, if it
finds '@' followed by one of these identifiers (eg, '@class'), it
recognizes the whole as an Objective-C keyword. If the identifier
is found elsewhere, it follows the rules of the C/C++ language.
*/
#define OBJC_IS_CXX_KEYWORD(rid) \
(rid == RID_CLASS \
|| rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
|| rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
/* The elements of `ridpointers' are identifier nodes for the reserved
type names and storage classes. It is indexed by a RID_... value. */
extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
/* Standard named or nameless data types of the C compiler. */
enum c_tree_index
{
CTI_CHAR16_TYPE,
CTI_CHAR32_TYPE,
CTI_WCHAR_TYPE,
CTI_UNDERLYING_WCHAR_TYPE,
CTI_WINT_TYPE,
CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
CTI_INTMAX_TYPE,
CTI_UINTMAX_TYPE,
CTI_WIDEST_INT_LIT_TYPE,
CTI_WIDEST_UINT_LIT_TYPE,
/* Types for <stdint.h>, that may not be defined on all
targets. */
CTI_SIG_ATOMIC_TYPE,
CTI_INT8_TYPE,
CTI_INT16_TYPE,
CTI_INT32_TYPE,
CTI_INT64_TYPE,
CTI_UINT8_TYPE,
CTI_UINT16_TYPE,
CTI_UINT32_TYPE,
CTI_UINT64_TYPE,
CTI_INT_LEAST8_TYPE,
CTI_INT_LEAST16_TYPE,
CTI_INT_LEAST32_TYPE,
CTI_INT_LEAST64_TYPE,
CTI_UINT_LEAST8_TYPE,
CTI_UINT_LEAST16_TYPE,
CTI_UINT_LEAST32_TYPE,
CTI_UINT_LEAST64_TYPE,
CTI_INT_FAST8_TYPE,
CTI_INT_FAST16_TYPE,
CTI_INT_FAST32_TYPE,
CTI_INT_FAST64_TYPE,
CTI_UINT_FAST8_TYPE,
CTI_UINT_FAST16_TYPE,
CTI_UINT_FAST32_TYPE,
CTI_UINT_FAST64_TYPE,
CTI_INTPTR_TYPE,
CTI_UINTPTR_TYPE,
CTI_CHAR_ARRAY_TYPE,
CTI_CHAR16_ARRAY_TYPE,
CTI_CHAR32_ARRAY_TYPE,
CTI_WCHAR_ARRAY_TYPE,
CTI_INT_ARRAY_TYPE,
CTI_STRING_TYPE,
CTI_CONST_STRING_TYPE,
/* Type for boolean expressions (bool in C++, int in C). */
CTI_TRUTHVALUE_TYPE,
CTI_TRUTHVALUE_TRUE,
CTI_TRUTHVALUE_FALSE,
CTI_DEFAULT_FUNCTION_TYPE,
/* These are not types, but we have to look them up all the time. */
CTI_FUNCTION_NAME_DECL,
CTI_PRETTY_FUNCTION_NAME_DECL,
CTI_C99_FUNCTION_NAME_DECL,
CTI_SAVED_FUNCTION_NAME_DECLS,
CTI_VOID_ZERO,
CTI_NULL,
CTI_MAX
};
#define C_CPP_HASHNODE(id) \
(&(((struct c_common_identifier *) (id))->node))
#define C_RID_CODE(id) \
((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
#define C_SET_RID_CODE(id, code) \
(((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
/* Identifier part common to the C front ends. Inherits from
tree_identifier, despite appearances. */
struct GTY(()) c_common_identifier {
struct tree_common common;
struct cpp_hashnode node;
};
/* An entry in the reserved keyword table. */
struct c_common_resword
{
const char *const word;
ENUM_BITFIELD(rid) const rid : 16;
const unsigned int disable : 16;
};
/* Disable mask. Keywords are disabled if (reswords[i].disable &
mask) is _true_. Thus for keywords which are present in all
languages the disable field is zero. */
#define D_CONLY 0x001 /* C only (not in C++). */
#define D_CXXONLY 0x002 /* C++ only (not in C). */
#define D_C99 0x004 /* In C, C99 only. */
#define D_CXX0X 0x008 /* In C++, C++0X only. */
#define D_EXT 0x010 /* GCC extension. */
#define D_EXT89 0x020 /* GCC extension incorporated in C99. */
#define D_ASM 0x040 /* Disabled by -fno-asm. */
#define D_OBJC 0x080 /* In Objective C and neither C nor C++. */
#define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */
#define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */
/* The reserved keyword table. */
extern const struct c_common_resword c_common_reswords[];
/* The number of items in the reserved keyword table. */
extern const unsigned int num_c_common_reswords;
#define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
#define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
#define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
#define wint_type_node c_global_trees[CTI_WINT_TYPE]
#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
#define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
#define int8_type_node c_global_trees[CTI_INT8_TYPE]
#define int16_type_node c_global_trees[CTI_INT16_TYPE]
#define int32_type_node c_global_trees[CTI_INT32_TYPE]
#define int64_type_node c_global_trees[CTI_INT64_TYPE]
#define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
#define uint16_type_node c_global_trees[CTI_UINT16_TYPE]
#define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
#define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
#define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
#define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
#define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
#define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
#define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
#define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
#define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
#define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
#define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
#define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
#define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
#define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
#define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
#define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
#define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
#define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
#define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
#define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
#define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
#define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
#define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
#define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
#define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
#define string_type_node c_global_trees[CTI_STRING_TYPE]
#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
/* A node for `((void) 0)'. */
#define void_zero_node c_global_trees[CTI_VOID_ZERO]
/* The node for C++ `__null'. */
#define null_node c_global_trees[CTI_NULL]
extern GTY(()) tree c_global_trees[CTI_MAX];
/* In a RECORD_TYPE, a sorted array of the fields of the type, not a
tree for size reasons. */
struct GTY((variable_size)) sorted_fields_type {
int len;
tree GTY((length ("%h.len"))) elts[1];
};
/* Mark which labels are explicitly declared.
These may be shadowed, and may be referenced from nested functions. */
#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
typedef enum c_language_kind
{
clk_c = 0, /* C90, C94 or C99 */
clk_objc = 1, /* clk_c with ObjC features. */
clk_cxx = 2, /* ANSI/ISO C++ */
clk_objcxx = 3 /* clk_cxx with ObjC features. */
}
c_language_kind;
/* To test for a specific language use c_language, defined by each
front end. For "ObjC features" or "not C++" use the macros. */
extern c_language_kind c_language;
#define c_dialect_cxx() ((c_language & clk_cxx) != 0)
#define c_dialect_objc() ((c_language & clk_objc) != 0)
/* The various name of operator that appears in error messages. */
typedef enum ref_operator {
/* NULL */
RO_NULL,
/* array indexing */
RO_ARRAY_INDEXING,
/* unary * */
RO_UNARY_STAR,
/* -> */
RO_ARROW,
/* implicit conversion */
RO_IMPLICIT_CONVERSION
} ref_operator;
/* Information about a statement tree. */
struct GTY(()) stmt_tree_s {
/* The current statement list being collected. */
tree x_cur_stmt_list;
/* In C++, Nonzero if we should treat statements as full
expressions. In particular, this variable is no-zero if at the
end of a statement we should destroy any temporaries created
during that statement. Similarly, if, at the end of a block, we
should destroy any local variables in this block. Normally, this
variable is nonzero, since those are the normal semantics of
C++.
However, in order to represent aggregate initialization code as
tree structure, we use statement-expressions. The statements
within the statement expression should not result in cleanups
being run until the entire enclosing statement is complete.
This flag has no effect in C. */
int stmts_are_full_exprs_p;
};
typedef struct stmt_tree_s *stmt_tree;
/* Global state pertinent to the current function. Some C dialects
extend this structure with additional fields. */
struct GTY(()) c_language_function {
/* While we are parsing the function, this contains information
about the statement-tree that we are building. */
struct stmt_tree_s x_stmt_tree;
};
/* When building a statement-tree, this is the current statement list
being collected. It's TREE_CHAIN is a back-pointer to the previous
statement list. */
#define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list)
/* Language-specific hooks. */
/* If non-NULL, this function is called after a precompile header file
is loaded. */
extern void (*lang_post_pch_load) (void);
extern void push_file_scope (void);
extern void pop_file_scope (void);
extern stmt_tree current_stmt_tree (void);
extern tree push_stmt_list (void);
extern tree pop_stmt_list (tree);
extern tree add_stmt (tree);
extern void push_cleanup (tree, tree, bool);
extern tree pushdecl_top_level (tree);
extern tree pushdecl (tree);
extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
location_t, tree, tree);
extern tree build_indirect_ref (location_t, tree, ref_operator);
extern int c_expand_decl (tree);
extern int field_decl_cmp (const void *, const void *);
extern void resort_sorted_fields (void *, void *, gt_pointer_operator,
void *);
extern bool has_c_linkage (const_tree decl);
/* Switches common to the C front ends. */
/* Nonzero means don't output line number information. */
extern char flag_no_line_commands;
/* Nonzero causes -E output not to be done, but directives such as
#define that have side effects are still obeyed. */
extern char flag_no_output;
/* Nonzero means dump macros in some fashion; contains the 'D', 'M',
'N' or 'U' of the command line switch. */
extern char flag_dump_macros;
/* Nonzero means pass #include lines through to the output. */
extern char flag_dump_includes;
/* Nonzero means process PCH files while preprocessing. */
extern bool flag_pch_preprocess;
/* The file name to which we should write a precompiled header, or
NULL if no header will be written in this compile. */
extern const char *pch_file;
/* Nonzero if an ISO standard was selected. It rejects macros in the
user's namespace. */
extern int flag_iso;
/* Warn about #pragma directives that are not recognized. */
extern int warn_unknown_pragmas; /* Tri state variable. */
/* Warn about format/argument anomalies in calls to formatted I/O functions
(*printf, *scanf, strftime, strfmon, etc.). */
extern int warn_format;
/* C/ObjC language option variables. */
/* Nonzero means allow type mismatches in conditional expressions;
just make their values `void'. */
extern int flag_cond_mismatch;
/* Nonzero means enable C89 Amendment 1 features. */
extern int flag_isoc94;
/* Nonzero means use the ISO C99 (or C1X) dialect of C. */
extern int flag_isoc99;
/* Nonzero means use the ISO C1X dialect of C. */
extern int flag_isoc1x;
/* Nonzero means that we have builtin functions, and main is an int. */
extern int flag_hosted;
/* ObjC language option variables. */
/* Tells the compiler that this is a special run. Do not perform any
compiling, instead we are to test some platform dependent features
and output a C header file with appropriate definitions. */
extern int print_struct_values;
/* Tells the compiler what is the constant string class for ObjC. */
extern const char *constant_string_class_name;
/* C++ language option variables. */
/* Nonzero means generate separate instantiation control files and
juggle them at link time. */
extern int flag_use_repository;
/* The supported C++ dialects. */
enum cxx_dialect {
/* C++98 */
cxx98,
/* Experimental features that are likely to become part of
C++0x. */
cxx0x
};
/* The C++ dialect being used. C++98 is the default. */
extern enum cxx_dialect cxx_dialect;
/* Maximum template instantiation depth. This limit is rather
arbitrary, but it exists to limit the time it takes to notice
infinite template instantiations. */
extern int max_tinst_depth;
/* Nonzero means that we should not issue warnings about problems that
occur when the code is executed, because the code being processed
is not expected to be executed. This is set during parsing. This
is used for cases like sizeof() and "0 ? a : b". This is a count,
not a bool, because unexecuted expressions can nest. */
extern int c_inhibit_evaluation_warnings;
/* Whether lexing has been completed, so subsequent preprocessor
errors should use the compiler's input_location. */
extern bool done_lexing;
/* C types are partitioned into three subsets: object, function, and
incomplete types. */
#define C_TYPE_OBJECT_P(type) \
(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
#define C_TYPE_INCOMPLETE_P(type) \
(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
#define C_TYPE_FUNCTION_P(type) \
(TREE_CODE (type) == FUNCTION_TYPE)
/* For convenience we define a single macro to identify the class of
object or incomplete types. */
#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
(!C_TYPE_FUNCTION_P (type))
struct visibility_flags
{
unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
};
/* Global visibility options. */
extern struct visibility_flags visibility_options;
/* Attribute table common to the C front ends. */
extern const struct attribute_spec c_common_attribute_table[];
extern const struct attribute_spec c_common_format_attribute_table[];
/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
ID is the identifier to use, NAME is the string.
TYPE_DEP indicates whether it depends on type of the function or not
(i.e. __PRETTY_FUNCTION__). */
extern tree (*make_fname_decl) (location_t, tree, int);
/* In c-decl.c and cp/tree.c. FIXME. */
extern void c_register_addr_space (const char *str, addr_space_t as);
/* In c-common.c. */
extern bool in_late_binary_op;
extern const char *c_addr_space_name (addr_space_t as);
extern tree identifier_global_value (tree);
extern void record_builtin_type (enum rid, const char *, tree);
extern tree build_void_list_node (void);
extern void start_fname_decls (void);
extern void finish_fname_decls (void);
extern const char *fname_as_string (int);
extern tree fname_decl (location_t, unsigned, tree);
extern void check_function_arguments (tree, int, tree *, tree);
extern void check_function_arguments_recurse (void (*)
(void *, tree,
unsigned HOST_WIDE_INT),
void *, tree,
unsigned HOST_WIDE_INT);
extern bool check_builtin_function_arguments (tree, int, tree *);
extern void check_function_format (tree, int, tree *);
extern void set_Wformat (int);
extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
extern bool attribute_takes_identifier_p (const_tree);
extern bool c_common_handle_option (size_t, const char *, int, int, location_t,
const struct cl_option_handlers *);
extern tree c_common_type_for_mode (enum machine_mode, int);
extern tree c_common_type_for_size (unsigned int, int);
extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
int, int);
extern tree c_common_unsigned_type (tree);
extern tree c_common_signed_type (tree);
extern tree c_common_signed_or_unsigned_type (int, tree);
extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
extern bool decl_with_nonnull_addr_p (const_tree);
extern tree c_fully_fold (tree, bool, bool *);
extern tree decl_constant_value_for_optimization (tree);
extern tree c_wrap_maybe_const (tree, bool);
extern tree c_save_expr (tree);
extern tree c_common_truthvalue_conversion (location_t, tree);
extern void c_apply_type_quals_to_decl (int, tree);
extern tree c_sizeof_or_alignof_type (location_t, tree, bool, int);
extern tree c_alignof_expr (location_t, tree);
/* Print an error message for invalid operands to arith operation CODE.
NOP_EXPR is used as a special case (see truthvalue_conversion). */
extern void binary_op_error (location_t, enum tree_code, tree, tree);
extern tree fix_string_type (tree);
extern void constant_expression_warning (tree);
extern void constant_expression_error (tree);
extern bool strict_aliasing_warning (tree, tree, tree);
extern void warnings_for_convert_and_check (tree, tree, tree);
extern tree convert_and_check (tree, tree);
extern void overflow_warning (location_t, tree);
extern void warn_logical_operator (location_t, enum tree_code, tree,
enum tree_code, tree, enum tree_code, tree);
extern void check_main_parameter_types (tree decl);
extern bool c_determine_visibility (tree);
extern bool same_scalar_type_ignoring_signedness (tree, tree);
extern void mark_valid_location_for_stdc_pragma (bool);
extern bool valid_location_for_stdc_pragma_p (void);
extern void set_float_const_decimal64 (void);
extern void clear_float_const_decimal64 (void);
extern bool float_const_decimal64_p (void);
extern bool keyword_begins_type_specifier (enum rid);
extern bool keyword_is_storage_class_specifier (enum rid);
extern bool keyword_is_type_qualifier (enum rid);
#define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, 1)
#define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1)
/* Subroutine of build_binary_op, used for certain operations. */
extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
/* Subroutine of build_binary_op, used for comparison operations.
See if the operands have both been converted from subword integer types
and, if so, perhaps change them both back to their original type. */
extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *);
extern tree pointer_int_sum (location_t, enum tree_code, tree, tree);
/* Add qualifiers to a type, in the fashion for C. */
extern tree c_build_qualified_type (tree, int);
/* Build tree nodes and builtin functions common to both C and C++ language
frontends. */
extern void c_common_nodes_and_builtins (void);
extern void disable_builtin_function (const char *);
extern void set_compound_literal_name (tree decl);
extern tree build_va_arg (location_t, tree, tree);
extern const unsigned int c_family_lang_mask;
extern unsigned int c_common_option_lang_mask (void);
extern void c_common_initialize_diagnostics (diagnostic_context *);
extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
extern void c_common_init_options_struct (struct gcc_options *);
extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
extern bool c_common_post_options (const char **);
extern bool c_common_init (void);
extern void c_common_finish (void);
extern void c_common_parse_file (void);
extern alias_set_type c_common_get_alias_set (tree);
extern void c_register_builtin_type (tree, const char*);
extern bool c_promoting_integer_type_p (const_tree);
extern int self_promoting_args_p (const_tree);
extern tree strip_pointer_operator (tree);
extern tree strip_pointer_or_array_types (tree);
extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
/* This is the basic parsing function. */
extern void c_parse_file (void);
extern void warn_for_omitted_condop (location_t, tree);
/* These macros provide convenient access to the various _STMT nodes. */
/* Nonzero if a given STATEMENT_LIST represents the outermost binding
if a statement expression. */
#define STATEMENT_LIST_STMT_EXPR(NODE) \
TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
/* Nonzero if a label has been added to the statement list. */
#define STATEMENT_LIST_HAS_LABEL(NODE) \
TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
/* C_MAYBE_CONST_EXPR accessors. */
#define C_MAYBE_CONST_EXPR_PRE(NODE) \
TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
#define C_MAYBE_CONST_EXPR_EXPR(NODE) \
TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
#define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
#define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
#define EXPR_INT_CONST_OPERANDS(EXPR) \
(INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
&& (TREE_CODE (EXPR) == INTEGER_CST \
|| (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
&& C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
#define DECL_C_BIT_FIELD(NODE) \
(DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
#define SET_DECL_C_BIT_FIELD(NODE) \
(DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
#define CLEAR_DECL_C_BIT_FIELD(NODE) \
(DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
extern tree do_case (location_t, tree, tree);
extern tree build_stmt (location_t, enum tree_code, ...);
extern tree build_case_label (location_t, tree, tree, tree);
extern tree build_real_imag_expr (location_t, enum tree_code, tree);
/* These functions must be defined by each front-end which implements
a variant of the C language. They are used in c-common.c. */
extern tree build_unary_op (location_t, enum tree_code, tree, int);
extern tree build_binary_op (location_t, enum tree_code, tree, tree, int);
extern tree perform_integral_promotions (tree);
/* These functions must be defined by each front-end which implements
a variant of the C language. They are used by port files. */
extern tree default_conversion (tree);
/* Given two integer or real types, return the type for their sum.
Given two compatible ANSI C types, returns the merged type. */
extern tree common_type (tree, tree);
extern tree decl_constant_value (tree);
/* Handle increment and decrement of boolean types. */
extern tree boolean_increment (enum tree_code, tree);
extern int case_compare (splay_tree_key, splay_tree_key);
extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree);
extern void c_do_switch_warnings (splay_tree, location_t, tree, tree);
extern tree build_function_call (location_t, tree, tree);
extern tree build_function_call_vec (location_t, tree,
VEC(tree,gc) *, VEC(tree,gc) *);
extern tree resolve_overloaded_builtin (location_t, tree, VEC(tree,gc) *);
extern tree finish_label_address_expr (tree, location_t);
/* Same function prototype, but the C and C++ front ends have
different implementations. Used in c-common.c. */
extern tree lookup_label (tree);
extern tree lookup_name (tree);
extern bool lvalue_p (const_tree);
extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *);
extern void init_c_lex (void);
extern void c_cpp_builtins (cpp_reader *);
extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int,
const char *, va_list *)
ATTRIBUTE_GCC_DIAG(6,0);
extern bool parse_optimize_options (tree, bool);
/* Positive if an implicit `extern "C"' scope has just been entered;
negative if such a scope has just been exited. */
extern GTY(()) int pending_lang_change;
/* Information recorded about each file examined during compilation. */
struct c_fileinfo
{
int time; /* Time spent in the file. */
/* Flags used only by C++.
INTERFACE_ONLY nonzero means that we are in an "interface" section
of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
INTERFACE_ONLY is zero, it means that we are responsible for
exporting definitions that others might need. */
short interface_only;
short interface_unknown;
};
struct c_fileinfo *get_fileinfo (const char *);
extern void dump_time_statistics (void);
extern bool c_dump_tree (void *, tree);
extern void verify_sequence_points (tree);
extern tree fold_offsetof (tree, tree);
/* Places where an lvalue, or modifiable lvalue, may be required.
Used to select diagnostic messages in lvalue_error and
readonly_error. */
enum lvalue_use {
lv_assign,
lv_increment,
lv_decrement,
lv_addressof,
lv_asm
};
extern void readonly_error (tree, enum lvalue_use);
extern void lvalue_error (location_t, enum lvalue_use);
extern void invalid_indirection_error (location_t, tree, ref_operator);
extern int complete_array_type (tree *, tree, bool);
extern tree builtin_type_for_size (int, bool);
extern void c_common_mark_addressable_vec (tree);
extern void warn_array_subscript_with_type_char (tree);
extern void warn_about_parentheses (enum tree_code,
enum tree_code, tree,
enum tree_code, tree);
extern void warn_for_unused_label (tree label);
extern void warn_for_div_by_zero (location_t, tree divisor);
extern void warn_for_sign_compare (location_t,
tree orig_op0, tree orig_op1,
tree op0, tree op1,
tree result_type,
enum tree_code resultcode);
extern void do_warn_double_promotion (tree, tree, tree, const char *,
location_t);
extern void set_underlying_type (tree x);
extern VEC(tree,gc) *make_tree_vector (void);
extern void release_tree_vector (VEC(tree,gc) *);
extern VEC(tree,gc) *make_tree_vector_single (tree);
extern VEC(tree,gc) *make_tree_vector_copy (const VEC(tree,gc) *);
/* In c-gimplify.c */
extern void c_genericize (tree);
extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
extern tree c_build_bind_expr (location_t, tree, tree);
/* In c-pch.c */
extern void pch_init (void);
extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
const char *orig);
extern void c_common_write_pch (void);
extern void c_common_no_more_pch (void);
extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
extern void c_common_print_pch_checksum (FILE *f);
/* In *-checksum.c */
extern const unsigned char executable_checksum[16];
/* In c-cppbuiltin.c */
extern void builtin_define_std (const char *macro);
extern void builtin_define_with_value (const char *, const char *, int);
extern void c_stddef_cpp_builtins (void);
extern void fe_file_change (const struct line_map *);
extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char);
/* In c-ppoutput.c */
extern void init_pp_output (FILE *);
extern void preprocess_file (cpp_reader *);
extern void pp_file_change (const struct line_map *);
extern void pp_dir_change (cpp_reader *, const char *);
extern bool check_missing_format_attribute (tree, tree);
/* In c-omp.c */
extern tree c_finish_omp_master (location_t, tree);
extern tree c_finish_omp_critical (location_t, tree, tree);
extern tree c_finish_omp_ordered (location_t, tree);
extern void c_finish_omp_barrier (location_t);
extern tree c_finish_omp_atomic (location_t, enum tree_code, tree, tree);
extern void c_finish_omp_flush (location_t);
extern void c_finish_omp_taskwait (location_t);
extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree);
extern void c_split_parallel_clauses (location_t, tree, tree *, tree *);
extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
/* Not in c-omp.c; provided by the front end. */
extern bool c_omp_sharing_predetermined (tree);
extern tree c_omp_remap_decl (tree, bool);
extern void record_types_used_by_current_var_decl (tree);
#endif /* ! GCC_C_COMMON_H */
|