aboutsummaryrefslogtreecommitdiff
path: root/stdio-common/vfprintf-internal.c
blob: c76c06e49b0b9ffe97f73d17e35de2fdf6b2c0d0 (plain)
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
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <array_length.h>
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <printf.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <wchar.h>
#include <libc-lock.h>
#include <sys/param.h>
#include <_itoa.h>
#include <locale/localeinfo.h>
#include <grouping_iterator.h>
#include <stdio.h>
#include <scratch_buffer.h>
#include <intprops.h>
#include <printf_buffer.h>
#include <printf_buffer_to_file.h>

/* This code is shared between the standard stdio implementation found
   in GNU C library and the libio implementation originally found in
   GNU libg++.

   Beside this it is also shared between the normal and wide character
   implementation as defined in ISO/IEC 9899:1990/Amendment 1:1995.  */

#include <libioP.h>

#ifdef COMPILE_WPRINTF
#include <wctype.h>
#endif

#define ARGCHECK(S, Format) \
  do									     \
    {									     \
      /* Check file argument for consistence.  */			     \
      CHECK_FILE (S, -1);						     \
      if (S->_flags & _IO_NO_WRITES)					     \
       {								     \
	 S->_flags |= _IO_ERR_SEEN;					     \
	 __set_errno (EBADF);						     \
	 return -1;							     \
       }								     \
      if (Format == NULL)						     \
       {								     \
	 __set_errno (EINVAL);						     \
	 return -1;							     \
       }								     \
    } while (0)
#define UNBUFFERED_P(S) ((S)->_flags & _IO_UNBUFFERED)

#if __HAVE_FLOAT128_UNLIKE_LDBL
# define PARSE_FLOAT_VA_ARG_EXTENDED(INFO)				      \
  do									      \
    {									      \
      if (is_long_double						      \
	  && (mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0)		      \
	{								      \
	  INFO.is_binary128 = 1;					      \
	  the_arg.pa_float128 = va_arg (ap, _Float128);			      \
	}								      \
      else								      \
	{								      \
	  PARSE_FLOAT_VA_ARG (INFO);					      \
	}								      \
    }									      \
  while (0)
#else
# define PARSE_FLOAT_VA_ARG_EXTENDED(INFO)				      \
  PARSE_FLOAT_VA_ARG (INFO);
#endif

#define PARSE_FLOAT_VA_ARG(INFO)					      \
  do									      \
    {									      \
      INFO.is_binary128 = 0;						      \
      if (is_long_double)						      \
	the_arg.pa_long_double = va_arg (ap, long double);		      \
      else								      \
	the_arg.pa_double = va_arg (ap, double);			      \
    }									      \
  while (0)

#if __HAVE_FLOAT128_UNLIKE_LDBL
# define SETUP_FLOAT128_INFO(INFO)					      \
  do									      \
    {									      \
      if ((mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0)		      \
	INFO.is_binary128 = is_long_double;				      \
      else								      \
	INFO.is_binary128 = 0;						      \
    }									      \
  while (0)
#else
# define SETUP_FLOAT128_INFO(INFO)					      \
  do									      \
    {									      \
      INFO.is_binary128 = 0;						      \
    }									      \
  while (0)
#endif

#ifndef COMPILE_WPRINTF
# include "printf_buffer-char.h"
# define vfprintf	__vfprintf_internal
# define OTHER_CHAR_T   wchar_t
# define UCHAR_T	unsigned char
# define INT_T		int
typedef const char *THOUSANDS_SEP_T;
# define L_(Str)	Str
# define ISDIGIT(Ch)	((unsigned int) ((Ch) - '0') < 10)
# define STR_LEN(Str)	strlen (Str)

# define ORIENT		if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
			  return -1
# define CONVERT_FROM_OTHER_STRING __wcsrtombs
#else
# include "printf_buffer-wchar_t.h"
# define vfprintf	__vfwprintf_internal
# define OTHER_CHAR_T   char
/* This is a hack!!!  There should be a type uwchar_t.  */
# define UCHAR_T	unsigned int /* uwchar_t */
# define INT_T		wint_t
typedef wchar_t THOUSANDS_SEP_T;
# define L_(Str)	L##Str
# define ISDIGIT(Ch)	((unsigned int) ((Ch) - L'0') < 10)
# define STR_LEN(Str)	__wcslen (Str)

# include <_itowa.h>

# define ORIENT		if (_IO_fwide (s, 1) != 1) return -1
# define CONVERT_FROM_OTHER_STRING __mbsrtowcs

# undef _itoa
# define _itoa(Val, Buf, Base, Case) _itowa (Val, Buf, Base, Case)
# define _itoa_word(Val, Buf, Base, Case) _itowa_word (Val, Buf, Base, Case)
# undef EOF
# define EOF WEOF
#endif

/* Include the shared code for parsing the format string.  */
#include "printf-parse.h"


/* Write the string SRC to S.  If PREC is non-negative, write at most
   PREC bytes.  If LEFT is true, perform left justification.  */
static void
outstring_converted_wide_string (struct Xprintf_buffer *target,
				 const OTHER_CHAR_T *src, int prec,
				 int width, bool left)
{
  /* Use a small buffer to combine processing of multiple characters.
     CONVERT_FROM_OTHER_STRING expects the buffer size in (wide)
     characters, and buf_length counts that.  */
  enum { buf_length = 256 / sizeof (CHAR_T) };
  CHAR_T buf[buf_length];
  _Static_assert (sizeof (buf) > MB_LEN_MAX,
		  "buffer is large enough for a single multi-byte character");

  /* Add the initial padding if needed.  */
  if (width > 0 && !left)
    {
      /* Make a first pass to find the output width, so that we can
	 add the required padding.  */
      mbstate_t mbstate = { 0 };
      const OTHER_CHAR_T *src_copy = src;
      size_t total_written;
      if (prec < 0)
	total_written = CONVERT_FROM_OTHER_STRING
	  (NULL, &src_copy, 0, &mbstate);
      else
	{
	  /* The source might not be null-terminated.  Enforce the
	     limit manually, based on the output length.  */
	  total_written = 0;
	  size_t limit = prec;
	  while (limit > 0 && src_copy != NULL)
	    {
	      size_t write_limit = buf_length;
	      if (write_limit > limit)
		write_limit = limit;
	      size_t written = CONVERT_FROM_OTHER_STRING
		(buf, &src_copy, write_limit, &mbstate);
	      if (written == (size_t) -1)
		{
		  Xprintf_buffer_mark_failed (target);
		  return;
		}
	      if (written == 0)
		break;
	      total_written += written;
	      limit -= written;
	    }
	}

      /* Output initial padding.  */
      Xprintf_buffer_pad (target, L_(' '), width - total_written);
      if (Xprintf_buffer_has_failed (target))
	return;
    }

  /* Convert the input string, piece by piece.  */
  size_t total_written = 0;
  {
    mbstate_t mbstate = { 0 };
    /* If prec is negative, remaining is not decremented, otherwise,
      it serves as the write limit.  */
    size_t remaining = -1;
    if (prec >= 0)
      remaining = prec;
    while (remaining > 0 && src != NULL)
      {
	size_t write_limit = buf_length;
	if (remaining < write_limit)
	  write_limit = remaining;
	size_t written = CONVERT_FROM_OTHER_STRING
	  (buf, &src, write_limit, &mbstate);
	if (written == (size_t) -1)
	  {
	    Xprintf_buffer_mark_failed (target);
	    return;
	  }
	if (written == 0)
	  break;
	Xprintf_buffer_write (target, buf, written);
	total_written += written;
	if (prec >= 0)
	  remaining -= written;
      }
  }

  /* Add final padding.  */
  if (width > 0 && left)
    Xprintf_buffer_pad (target, L_(' '), width - total_written);
}

/* Calls __printf_fp or __printf_fphex based on the value of the
   format specifier INFO->spec.  */
static inline void
__printf_fp_spec (struct Xprintf_buffer *target,
		  const struct printf_info *info, const void *const *args)
{
  if (info->spec == 'a' || info->spec == 'A')
    Xprintf (fphex_l_buffer) (target, _NL_CURRENT_LOCALE, info, args);
  else
    Xprintf (fp_l_buffer) (target, _NL_CURRENT_LOCALE, info, args);
}

/* For handling long_double and longlong we use the same flag.  If
   `long' and `long long' are effectively the same type define it to
   zero.  */
#if LONG_MAX == LONG_LONG_MAX
# define is_longlong 0
#else
# define is_longlong is_long_double
#endif

/* If `long' and `int' is effectively the same type we don't have to
   handle `long separately.  */
#if INT_MAX == LONG_MAX
# define is_long_num	0
#else
# define is_long_num	is_long
#endif


/* Global constants.  */
static const CHAR_T null[] = L_("(null)");

/* Size of the work_buffer variable (in characters, not bytes.  */
enum { WORK_BUFFER_SIZE = 1000 / sizeof (CHAR_T) };

/* This table maps a character into a number representing a class.  In
   each step there is a destination label for each class.  */
static const uint8_t jump_table[] =
  {
    /* ' ' */  1,            0,            0, /* '#' */  4,
	       0, /* '%' */ 14,            0, /* '\''*/  6,
	       0,            0, /* '*' */  7, /* '+' */  2,
	       0, /* '-' */  3, /* '.' */  9,            0,
    /* '0' */  5, /* '1' */  8, /* '2' */  8, /* '3' */  8,
    /* '4' */  8, /* '5' */  8, /* '6' */  8, /* '7' */  8,
    /* '8' */  8, /* '9' */  8,            0,            0,
	       0,            0,            0,            0,
	       0, /* 'A' */ 26, /* 'B' */ 30, /* 'C' */ 25,
	       0, /* 'E' */ 19, /* F */   19, /* 'G' */ 19,
	       0, /* 'I' */ 29,            0,            0,
    /* 'L' */ 12,            0,            0,            0,
	       0,            0,            0, /* 'S' */ 21,
	       0,            0,            0,            0,
    /* 'X' */ 18,            0, /* 'Z' */ 13,            0,
	       0,            0,            0,            0,
	       0, /* 'a' */ 26, /* 'b' */ 30, /* 'c' */ 20,
    /* 'd' */ 15, /* 'e' */ 19, /* 'f' */ 19, /* 'g' */ 19,
    /* 'h' */ 10, /* 'i' */ 15, /* 'j' */ 28,            0,
    /* 'l' */ 11, /* 'm' */ 24, /* 'n' */ 23, /* 'o' */ 17,
    /* 'p' */ 22, /* 'q' */ 12,            0, /* 's' */ 21,
    /* 't' */ 27, /* 'u' */ 16,            0,            0,
    /* 'x' */ 18,            0, /* 'z' */ 13
  };

#define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
#define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
#define LABEL(Name) do_##Name
#ifdef SHARED
  /* 'int' is enough and it saves some space on 64 bit systems.  */
# define JUMP_TABLE_TYPE const int
# define JUMP_TABLE_BASE_LABEL do_form_unknown
# define REF(Name) &&do_##Name - &&JUMP_TABLE_BASE_LABEL
# define JUMP(ChExpr, table)						      \
      do								      \
	{								      \
	  int offset;							      \
	  void *ptr;							      \
	  spec = (ChExpr);						      \
	  offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown)	      \
	    : table[CHAR_CLASS (spec)];					      \
	  ptr = &&JUMP_TABLE_BASE_LABEL + offset;			      \
	  goto *ptr;							      \
	}								      \
      while (0)
#else
# define JUMP_TABLE_TYPE const void *const
# define REF(Name) &&do_##Name
# define JUMP(ChExpr, table)						      \
      do								      \
	{								      \
	  const void *ptr;						      \
	  spec = (ChExpr);						      \
	  ptr = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown)		      \
	    : table[CHAR_CLASS (spec)];					      \
	  goto *ptr;							      \
	}								      \
      while (0)
#endif

#define STEP0_3_TABLE							      \
    /* Step 0: at the beginning.  */					      \
    static JUMP_TABLE_TYPE step0_jumps[31] =				      \
    {									      \
      REF (form_unknown),						      \
      REF (flag_space),		/* for ' ' */				      \
      REF (flag_plus),		/* for '+' */				      \
      REF (flag_minus),		/* for '-' */				      \
      REF (flag_hash),		/* for '<hash>' */			      \
      REF (flag_zero),		/* for '0' */				      \
      REF (flag_quote),		/* for '\'' */				      \
      REF (width_asterics),	/* for '*' */				      \
      REF (width),		/* for '1'...'9' */			      \
      REF (precision),		/* for '.' */				      \
      REF (mod_half),		/* for 'h' */				      \
      REF (mod_long),		/* for 'l' */				      \
      REF (mod_longlong),	/* for 'L', 'q' */			      \
      REF (mod_size_t),		/* for 'z', 'Z' */			      \
      REF (form_percent),	/* for '%' */				      \
      REF (form_integer),	/* for 'd', 'i' */			      \
      REF (form_unsigned),	/* for 'u' */				      \
      REF (form_octal),		/* for 'o' */				      \
      REF (form_hexa),		/* for 'X', 'x' */			      \
      REF (form_float),		/* for 'E', 'e', 'F', 'f', 'G', 'g' */	      \
      REF (form_character),	/* for 'c' */				      \
      REF (form_string),	/* for 's', 'S' */			      \
      REF (form_pointer),	/* for 'p' */				      \
      REF (form_number),	/* for 'n' */				      \
      REF (form_strerror),	/* for 'm' */				      \
      REF (form_wcharacter),	/* for 'C' */				      \
      REF (form_floathex),	/* for 'A', 'a' */			      \
      REF (mod_ptrdiff_t),      /* for 't' */				      \
      REF (mod_intmax_t),       /* for 'j' */				      \
      REF (flag_i18n),		/* for 'I' */				      \
      REF (form_binary),	/* for 'B', 'b' */			      \
    };									      \
    /* Step 1: after processing width.  */				      \
    static JUMP_TABLE_TYPE step1_jumps[31] =				      \
    {									      \
      REF (form_unknown),						      \
      REF (form_unknown),	/* for ' ' */				      \
      REF (form_unknown),	/* for '+' */				      \
      REF (form_unknown),	/* for '-' */				      \
      REF (form_unknown),	/* for '<hash>' */			      \
      REF (form_unknown),	/* for '0' */				      \
      REF (form_unknown),	/* for '\'' */				      \
      REF (form_unknown),	/* for '*' */				      \
      REF (form_unknown),	/* for '1'...'9' */			      \
      REF (precision),		/* for '.' */				      \
      REF (mod_half),		/* for 'h' */				      \
      REF (mod_long),		/* for 'l' */				      \
      REF (mod_longlong),	/* for 'L', 'q' */			      \
      REF (mod_size_t),		/* for 'z', 'Z' */			      \
      REF (form_percent),	/* for '%' */				      \
      REF (form_integer),	/* for 'd', 'i' */			      \
      REF (form_unsigned),	/* for 'u' */				      \
      REF (form_octal),		/* for 'o' */				      \
      REF (form_hexa),		/* for 'X', 'x' */			      \
      REF (form_float),		/* for 'E', 'e', 'F', 'f', 'G', 'g' */	      \
      REF (form_character),	/* for 'c' */				      \
      REF (form_string),	/* for 's', 'S' */			      \
      REF (form_pointer),	/* for 'p' */				      \
      REF (form_number),	/* for 'n' */				      \
      REF (form_strerror),	/* for 'm' */				      \
      REF (form_wcharacter),	/* for 'C' */				      \
      REF (form_floathex),	/* for 'A', 'a' */			      \
      REF (mod_ptrdiff_t),      /* for 't' */				      \
      REF (mod_intmax_t),       /* for 'j' */				      \
      REF (form_unknown),       /* for 'I' */				      \
      REF (form_binary),	/* for 'B', 'b' */			      \
    };									      \
    /* Step 2: after processing precision.  */				      \
    static JUMP_TABLE_TYPE step2_jumps[31] =				      \
    {									      \
      REF (form_unknown),						      \
      REF (form_unknown),	/* for ' ' */				      \
      REF (form_unknown),	/* for '+' */				      \
      REF (form_unknown),	/* for '-' */				      \
      REF (form_unknown),	/* for '<hash>' */			      \
      REF (form_unknown),	/* for '0' */				      \
      REF (form_unknown),	/* for '\'' */				      \
      REF (form_unknown),	/* for '*' */				      \
      REF (form_unknown),	/* for '1'...'9' */			      \
      REF (form_unknown),	/* for '.' */				      \
      REF (mod_half),		/* for 'h' */				      \
      REF (mod_long),		/* for 'l' */				      \
      REF (mod_longlong),	/* for 'L', 'q' */			      \
      REF (mod_size_t),		/* for 'z', 'Z' */			      \
      REF (form_percent),	/* for '%' */				      \
      REF (form_integer),	/* for 'd', 'i' */			      \
      REF (form_unsigned),	/* for 'u' */				      \
      REF (form_octal),		/* for 'o' */				      \
      REF (form_hexa),		/* for 'X', 'x' */			      \
      REF (form_float),		/* for 'E', 'e', 'F', 'f', 'G', 'g' */	      \
      REF (form_character),	/* for 'c' */				      \
      REF (form_string),	/* for 's', 'S' */			      \
      REF (form_pointer),	/* for 'p' */				      \
      REF (form_number),	/* for 'n' */				      \
      REF (form_strerror),	/* for 'm' */				      \
      REF (form_wcharacter),	/* for 'C' */				      \
      REF (form_floathex),	/* for 'A', 'a' */			      \
      REF (mod_ptrdiff_t),      /* for 't' */				      \
      REF (mod_intmax_t),       /* for 'j' */				      \
      REF (form_unknown),       /* for 'I' */				      \
      REF (form_binary),	/* for 'B', 'b' */			      \
    };									      \
    /* Step 3a: after processing first 'h' modifier.  */		      \
    static JUMP_TABLE_TYPE step3a_jumps[31] =				      \
    {									      \
      REF (form_unknown),						      \
      REF (form_unknown),	/* for ' ' */				      \
      REF (form_unknown),	/* for '+' */				      \
      REF (form_unknown),	/* for '-' */				      \
      REF (form_unknown),	/* for '<hash>' */			      \
      REF (form_unknown),	/* for '0' */				      \
      REF (form_unknown),	/* for '\'' */				      \
      REF (form_unknown),	/* for '*' */				      \
      REF (form_unknown),	/* for '1'...'9' */			      \
      REF (form_unknown),	/* for '.' */				      \
      REF (mod_halfhalf),	/* for 'h' */				      \
      REF (form_unknown),	/* for 'l' */				      \
      REF (form_unknown),	/* for 'L', 'q' */			      \
      REF (form_unknown),	/* for 'z', 'Z' */			      \
      REF (form_percent),	/* for '%' */				      \
      REF (form_integer),	/* for 'd', 'i' */			      \
      REF (form_unsigned),	/* for 'u' */				      \
      REF (form_octal),		/* for 'o' */				      \
      REF (form_hexa),		/* for 'X', 'x' */			      \
      REF (form_unknown),	/* for 'E', 'e', 'F', 'f', 'G', 'g' */	      \
      REF (form_unknown),	/* for 'c' */				      \
      REF (form_unknown),	/* for 's', 'S' */			      \
      REF (form_unknown),	/* for 'p' */				      \
      REF (form_number),	/* for 'n' */				      \
      REF (form_unknown),	/* for 'm' */				      \
      REF (form_unknown),	/* for 'C' */				      \
      REF (form_unknown),	/* for 'A', 'a' */			      \
      REF (form_unknown),       /* for 't' */				      \
      REF (form_unknown),       /* for 'j' */				      \
      REF (form_unknown),       /* for 'I' */				      \
      REF (form_binary),	/* for 'B', 'b' */			      \
    };									      \
    /* Step 3b: after processing first 'l' modifier.  */		      \
    static JUMP_TABLE_TYPE step3b_jumps[31] =				      \
    {									      \
      REF (form_unknown),						      \
      REF (form_unknown),	/* for ' ' */				      \
      REF (form_unknown),	/* for '+' */				      \
      REF (form_unknown),	/* for '-' */				      \
      REF (form_unknown),	/* for '<hash>' */			      \
      REF (form_unknown),	/* for '0' */				      \
      REF (form_unknown),	/* for '\'' */				      \
      REF (form_unknown),	/* for '*' */				      \
      REF (form_unknown),	/* for '1'...'9' */			      \
      REF (form_unknown),	/* for '.' */				      \
      REF (form_unknown),	/* for 'h' */				      \
      REF (mod_longlong),	/* for 'l' */				      \
      REF (form_unknown),	/* for 'L', 'q' */			      \
      REF (form_unknown),	/* for 'z', 'Z' */			      \
      REF (form_percent),	/* for '%' */				      \
      REF (form_integer),	/* for 'd', 'i' */			      \
      REF (form_unsigned),	/* for 'u' */				      \
      REF (form_octal),		/* for 'o' */				      \
      REF (form_hexa),		/* for 'X', 'x' */			      \
      REF (form_float),		/* for 'E', 'e', 'F', 'f', 'G', 'g' */	      \
      REF (form_character),	/* for 'c' */				      \
      REF (form_string),	/* for 's', 'S' */			      \
      REF (form_pointer),	/* for 'p' */				      \
      REF (form_number),	/* for 'n' */				      \
      REF (form_strerror),	/* for 'm' */				      \
      REF (form_wcharacter),	/* for 'C' */				      \
      REF (form_floathex),	/* for 'A', 'a' */			      \
      REF (form_unknown),       /* for 't' */				      \
      REF (form_unknown),       /* for 'j' */				      \
      REF (form_unknown),       /* for 'I' */				      \
      REF (form_binary),	/* for 'B', 'b' */			      \
    }

#define STEP4_TABLE							      \
    /* Step 4: processing format specifier.  */				      \
    static JUMP_TABLE_TYPE step4_jumps[31] =				      \
    {									      \
      REF (form_unknown),						      \
      REF (form_unknown),	/* for ' ' */				      \
      REF (form_unknown),	/* for '+' */				      \
      REF (form_unknown),	/* for '-' */				      \
      REF (form_unknown),	/* for '<hash>' */			      \
      REF (form_unknown),	/* for '0' */				      \
      REF (form_unknown),	/* for '\'' */				      \
      REF (form_unknown),	/* for '*' */				      \
      REF (form_unknown),	/* for '1'...'9' */			      \
      REF (form_unknown),	/* for '.' */				      \
      REF (form_unknown),	/* for 'h' */				      \
      REF (form_unknown),	/* for 'l' */				      \
      REF (form_unknown),	/* for 'L', 'q' */			      \
      REF (form_unknown),	/* for 'z', 'Z' */			      \
      REF (form_percent),	/* for '%' */				      \
      REF (form_integer),	/* for 'd', 'i' */			      \
      REF (form_unsigned),	/* for 'u' */				      \
      REF (form_octal),		/* for 'o' */				      \
      REF (form_hexa),		/* for 'X', 'x' */			      \
      REF (form_float),		/* for 'E', 'e', 'F', 'f', 'G', 'g' */	      \
      REF (form_character),	/* for 'c' */				      \
      REF (form_string),	/* for 's', 'S' */			      \
      REF (form_pointer),	/* for 'p' */				      \
      REF (form_number),	/* for 'n' */				      \
      REF (form_strerror),	/* for 'm' */				      \
      REF (form_wcharacter),	/* for 'C' */				      \
      REF (form_floathex),	/* for 'A', 'a' */			      \
      REF (form_unknown),       /* for 't' */				      \
      REF (form_unknown),       /* for 'j' */				      \
      REF (form_unknown),       /* for 'I' */				      \
      REF (form_binary),	/* for 'B', 'b' */			      \
    }

/* Handle positional format specifiers.  */
static void printf_positional (struct Xprintf_buffer *buf,
			       const CHAR_T *format, int readonly_format,
			       va_list ap, va_list *ap_savep,
			       int nspecs_done, const UCHAR_T *lead_str_end,
			       CHAR_T *work_buffer, int save_errno,
			       const char *grouping,
			       THOUSANDS_SEP_T thousands_sep,
			       unsigned int mode_flags);

/* Handle unknown format specifier.  */
static void printf_unknown (struct Xprintf_buffer *,
			    const struct printf_info *) __THROW;

static void group_number (struct Xprintf_buffer *buf,
			  struct grouping_iterator *iter,
			  CHAR_T *from, CHAR_T *to,
			  THOUSANDS_SEP_T thousands_sep, bool i18n);

/* The buffer-based function itself.  */
void
Xprintf_buffer (struct Xprintf_buffer *buf, const CHAR_T *format,
		  va_list ap, unsigned int mode_flags)
{
  /* The character used as thousands separator.  */
  THOUSANDS_SEP_T thousands_sep = 0;

  /* The string describing the size of groups of digits.  */
  const char *grouping;

  /* Current character in format string.  */
  const UCHAR_T *f;

  /* End of leading constant string.  */
  const UCHAR_T *lead_str_end;

  /* Points to next format specifier.  */
  const UCHAR_T *end_of_spec;

  /* Buffer intermediate results.  */
  CHAR_T work_buffer[WORK_BUFFER_SIZE];
  CHAR_T *workend;

  /* We have to save the original argument pointer.  */
  va_list ap_save;

  /* Count number of specifiers we already processed.  */
  int nspecs_done;

  /* For the %m format we may need the current `errno' value.  */
  int save_errno = errno;

  /* 1 if format is in read-only memory, -1 if it is in writable memory,
     0 if unknown.  */
  int readonly_format = 0;

  /* Initialize local variables.  */
  grouping = (const char *) -1;
#ifdef __va_copy
  /* This macro will be available soon in gcc's <stdarg.h>.  We need it
     since on some systems `va_list' is not an integral type.  */
  __va_copy (ap_save, ap);
#else
  ap_save = ap;
#endif
  nspecs_done = 0;

#ifdef COMPILE_WPRINTF
  /* Find the first format specifier.  */
  f = lead_str_end = __find_specwc ((const UCHAR_T *) format);
#else
  /* Find the first format specifier.  */
  f = lead_str_end = __find_specmb ((const UCHAR_T *) format);
#endif

  /* Write the literal text before the first format.  */
  Xprintf_buffer_write (buf, format,
			  lead_str_end - (const UCHAR_T *) format);
  if (Xprintf_buffer_has_failed (buf))
    return;

  /* If we only have to print a simple string, return now.  */
  if (*f == L_('\0'))
    return;

  /* Use the slow path in case any printf handler is registered.  */
  if (__glibc_unlikely (__printf_function_table != NULL
			|| __printf_modifier_table != NULL
			|| __printf_va_arg_table != NULL))
    goto do_positional;

  /* Process whole format string.  */
  do
    {
      STEP0_3_TABLE;
      STEP4_TABLE;

      int is_negative;	/* Flag for negative number.  */
      union
      {
	unsigned long long int longlong;
	unsigned long int word;
      } number;
      int base;
      union printf_arg the_arg;
      CHAR_T *string;	/* Pointer to argument string.  */
      int alt = 0;	/* Alternate format.  */
      int space = 0;	/* Use space prefix if no sign is needed.  */
      int left = 0;	/* Left-justify output.  */
      int showsign = 0;	/* Always begin with plus or minus sign.  */
      int group = 0;	/* Print numbers according grouping rules.  */
      /* Argument is long double/long long int.  Only used if
	 double/long double or long int/long long int are distinct.  */
      int is_long_double __attribute__ ((unused)) = 0;
      int is_short = 0;	/* Argument is short int.  */
      int is_long = 0;	/* Argument is long int.  */
      int is_char = 0;	/* Argument is promoted (unsigned) char.  */
      int width = 0;	/* Width of output; 0 means none specified.  */
      int prec = -1;	/* Precision of output; -1 means none specified.  */
      /* This flag is set by the 'I' modifier and selects the use of the
	 `outdigits' as determined by the current locale.  */
      int use_outdigits = 0;
      UCHAR_T pad = L_(' ');/* Padding character.  */
      CHAR_T spec;

      workend = work_buffer + WORK_BUFFER_SIZE;

      /* Get current character in format string.  */
      JUMP (*++f, step0_jumps);

      /* ' ' flag.  */
    LABEL (flag_space):
      space = 1;
      JUMP (*++f, step0_jumps);

      /* '+' flag.  */
    LABEL (flag_plus):
      showsign = 1;
      JUMP (*++f, step0_jumps);

      /* The '-' flag.  */
    LABEL (flag_minus):
      left = 1;
      pad = L_(' ');
      JUMP (*++f, step0_jumps);

      /* The '#' flag.  */
    LABEL (flag_hash):
      alt = 1;
      JUMP (*++f, step0_jumps);

      /* The '0' flag.  */
    LABEL (flag_zero):
      if (!left)
	pad = L_('0');
      JUMP (*++f, step0_jumps);

      /* The '\'' flag.  */
    LABEL (flag_quote):
      group = 1;

      if (grouping == (const char *) -1)
	{
#ifdef COMPILE_WPRINTF
	  thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
					    _NL_NUMERIC_THOUSANDS_SEP_WC);
#else
	  thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
#endif

	  grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
	  if (*grouping == '\0' || *grouping == CHAR_MAX
#ifdef COMPILE_WPRINTF
	      || thousands_sep == L'\0'
#else
	      || *thousands_sep == '\0'
#endif
	      )
	    grouping = NULL;
	}
      JUMP (*++f, step0_jumps);

    LABEL (flag_i18n):
      use_outdigits = 1;
      JUMP (*++f, step0_jumps);

      /* Get width from argument.  */
    LABEL (width_asterics):
      {
	const UCHAR_T *tmp;	/* Temporary value.  */

	tmp = ++f;
	if (ISDIGIT (*tmp))
	  {
	    int pos = read_int (&tmp);

	    if (pos == -1)
	      {
		__set_errno (EOVERFLOW);
		Xprintf_buffer_mark_failed (buf);
		goto all_done;
	      }

	    if (pos && *tmp == L_('$'))
	      /* The width comes from a positional parameter.  */
	      goto do_positional;
	  }
	width = va_arg (ap, int);

	/* Negative width means left justified.  */
	if (width < 0)
	  {
	    width = -width;
	    pad = L_(' ');
	    left = 1;
	  }
      }
      JUMP (*f, step1_jumps);

      /* Given width in format string.  */
    LABEL (width):
      width = read_int (&f);

      if (__glibc_unlikely (width == -1))
	{
	  __set_errno (EOVERFLOW);
	  Xprintf_buffer_mark_failed (buf);
	  goto all_done;
	}

      if (*f == L_('$'))
	/* Oh, oh.  The argument comes from a positional parameter.  */
	goto do_positional;
      JUMP (*f, step1_jumps);

    LABEL (precision):
      ++f;
      if (*f == L_('*'))
	{
	  const UCHAR_T *tmp;	/* Temporary value.  */

	  tmp = ++f;
	  if (ISDIGIT (*tmp))
	    {
	      int pos = read_int (&tmp);

	      if (pos == -1)
		{
		  __set_errno (EOVERFLOW);
		  Xprintf_buffer_mark_failed (buf);
		  goto all_done;
		}

	      if (pos && *tmp == L_('$'))
		/* The precision comes from a positional parameter.  */
		goto do_positional;
	    }
	  prec = va_arg (ap, int);

	  /* If the precision is negative the precision is omitted.  */
	  if (prec < 0)
	    prec = -1;
	}
      else if (ISDIGIT (*f))
	{
	  prec = read_int (&f);

	  /* The precision was specified in this case as an extremely
	     large positive value.  */
	  if (prec == -1)
	    {
	      __set_errno (EOVERFLOW);
	      Xprintf_buffer_mark_failed (buf);
	      goto all_done;
	    }
	}
      else
	prec = 0;
      JUMP (*f, step2_jumps);

      /* Process 'h' modifier.  There might another 'h' following.  */
    LABEL (mod_half):
      is_short = 1;
      JUMP (*++f, step3a_jumps);

      /* Process 'hh' modifier.  */
    LABEL (mod_halfhalf):
      is_short = 0;
      is_char = 1;
      JUMP (*++f, step4_jumps);

      /* Process 'l' modifier.  There might another 'l' following.  */
    LABEL (mod_long):
      is_long = 1;
      JUMP (*++f, step3b_jumps);

      /* Process 'L', 'q', or 'll' modifier.  No other modifier is
	 allowed to follow.  */
    LABEL (mod_longlong):
      is_long_double = 1;
      is_long = 1;
      JUMP (*++f, step4_jumps);

    LABEL (mod_size_t):
      is_long_double = sizeof (size_t) > sizeof (unsigned long int);
      is_long = sizeof (size_t) > sizeof (unsigned int);
      JUMP (*++f, step4_jumps);

    LABEL (mod_ptrdiff_t):
      is_long_double = sizeof (ptrdiff_t) > sizeof (unsigned long int);
      is_long = sizeof (ptrdiff_t) > sizeof (unsigned int);
      JUMP (*++f, step4_jumps);

    LABEL (mod_intmax_t):
      is_long_double = sizeof (intmax_t) > sizeof (unsigned long int);
      is_long = sizeof (intmax_t) > sizeof (unsigned int);
      JUMP (*++f, step4_jumps);

      /* Process current format.  */
      while (1)
	{
#define process_arg_int() va_arg (ap, int)
#define process_arg_long_int() va_arg (ap, long int)
#define process_arg_long_long_int() va_arg (ap, long long int)
#define process_arg_pointer() va_arg (ap, void *)
#define process_arg_string() va_arg (ap, const char *)
#define process_arg_unsigned_int() va_arg (ap, unsigned int)
#define process_arg_unsigned_long_int() va_arg (ap, unsigned long int)
#define process_arg_unsigned_long_long_int() va_arg (ap, unsigned long long int)
#define process_arg_wchar_t() va_arg (ap, wchar_t)
#define process_arg_wstring() va_arg (ap, const wchar_t *)
#include "vfprintf-process-arg.c"
#undef process_arg_int
#undef process_arg_long_int
#undef process_arg_long_long_int
#undef process_arg_pointer
#undef process_arg_string
#undef process_arg_unsigned_int
#undef process_arg_unsigned_long_int
#undef process_arg_unsigned_long_long_int
#undef process_arg_wchar_t
#undef process_arg_wstring

	LABEL (form_float):
	LABEL (form_floathex):
	  {
	    if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0))
	      is_long_double = 0;

	    struct printf_info info =
	      {
		.prec = prec,
		.width = width,
		.spec = spec,
		.is_long_double = is_long_double,
		.is_short = is_short,
		.is_long = is_long,
		.alt = alt,
		.space = space,
		.left = left,
		.showsign = showsign,
		.group = group,
		.pad = pad,
		.extra = 0,
		.i18n = use_outdigits,
		.wide = sizeof (CHAR_T) != 1,
		.is_binary128 = 0
	      };

	    PARSE_FLOAT_VA_ARG_EXTENDED (info);
	    const void *ptr = &the_arg;

	    __printf_fp_spec (buf, &info, &ptr);
	  }
	  break;

	LABEL (form_unknown):
	  if (spec == L_('\0'))
	    {
	      /* The format string ended before the specifier is complete.  */
	      __set_errno (EINVAL);
	      Xprintf_buffer_mark_failed (buf);
	      goto all_done;
	    }

	  /* If we are in the fast loop force entering the complicated
	     one.  */
	  goto do_positional;
	}

      /* The format is correctly handled.  */
      ++nspecs_done;

      /* Look for next format specifier.  */
#ifdef COMPILE_WPRINTF
      f = __find_specwc ((end_of_spec = ++f));
#else
      f = __find_specmb ((end_of_spec = ++f));
#endif

      /* Write the following constant string.  */
      Xprintf_buffer_write (buf, (const CHAR_T *) end_of_spec,
			      f - end_of_spec);
    }
  while (*f != L_('\0') && !Xprintf_buffer_has_failed (buf));

 all_done:
  /* printf_positional performs cleanup under its all_done label, so
     vfprintf-process-arg.c uses it for this function and
     printf_positional below.  */
  return;

  /* Hand off processing for positional parameters.  */
do_positional:
  printf_positional (buf, format, readonly_format, ap, &ap_save,
		     nspecs_done, lead_str_end, work_buffer,
		     save_errno, grouping, thousands_sep, mode_flags);
}

static void
printf_positional (struct Xprintf_buffer * buf, const CHAR_T *format,
		   int readonly_format,
		   va_list ap, va_list *ap_savep, int nspecs_done,
		   const UCHAR_T *lead_str_end,
		   CHAR_T *work_buffer, int save_errno,
		   const char *grouping, THOUSANDS_SEP_T thousands_sep,
		   unsigned int mode_flags)
{
  /* For positional argument handling.  */
  struct scratch_buffer specsbuf;
  scratch_buffer_init (&specsbuf);
  struct printf_spec *specs = specsbuf.data;
  size_t specs_limit = specsbuf.length / sizeof (specs[0]);

  /* Used as a backing store for args_value, args_size, args_type
     below.  */
  struct scratch_buffer argsbuf;
  scratch_buffer_init (&argsbuf);

  /* Array with information about the needed arguments.  This has to
     be dynamically extensible.  */
  size_t nspecs = 0;

  /* The number of arguments the format string requests.  This will
     determine the size of the array needed to store the argument
     attributes.  */
  size_t nargs = 0;

  /* Positional parameters refer to arguments directly.  This could
     also determine the maximum number of arguments.  Track the
     maximum number.  */
  size_t max_ref_arg = 0;

  /* Just a counter.  */
  size_t cnt;

  if (grouping == (const char *) -1)
    {
#ifdef COMPILE_WPRINTF
      thousands_sep = _NL_CURRENT_WORD (LC_NUMERIC,
					_NL_NUMERIC_THOUSANDS_SEP_WC);
#else
      thousands_sep = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
#endif

      grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
      if (*grouping == '\0' || *grouping == CHAR_MAX)
	grouping = NULL;
    }

  for (const UCHAR_T *f = lead_str_end; *f != L_('\0');
       f = specs[nspecs++].next_fmt)
    {
      if (nspecs == specs_limit)
	{
	  if (!scratch_buffer_grow_preserve (&specsbuf))
	    {
	      Xprintf_buffer_mark_failed (buf);
	      goto all_done;
	    }
	  specs = specsbuf.data;
	  specs_limit = specsbuf.length / sizeof (specs[0]);
	}

      /* Parse the format specifier.  */
#ifdef COMPILE_WPRINTF
      nargs += __parse_one_specwc (f, nargs, &specs[nspecs], &max_ref_arg);
#else
      nargs += __parse_one_specmb (f, nargs, &specs[nspecs], &max_ref_arg);
#endif
    }

  /* Determine the number of arguments the format string consumes.  */
  nargs = MAX (nargs, max_ref_arg);

  union printf_arg *args_value;
  int *args_size;
  int *args_type;
  {
    /* Calculate total size needed to represent a single argument
       across all three argument-related arrays.  */
    size_t bytes_per_arg
      = sizeof (*args_value) + sizeof (*args_size) + sizeof (*args_type);
    if (!scratch_buffer_set_array_size (&argsbuf, nargs, bytes_per_arg))
      {
	Xprintf_buffer_mark_failed (buf);
	goto all_done;
      }
    args_value = argsbuf.data;
    /* Set up the remaining two arrays to each point past the end of
       the prior array, since space for all three has been allocated
       now.  */
    args_size = &args_value[nargs].pa_int;
    args_type = &args_size[nargs];
    memset (args_type, (mode_flags & PRINTF_FORTIFY) != 0 ? '\xff' : '\0',
	    nargs * sizeof (*args_type));
  }

  /* XXX Could do sanity check here: If any element in ARGS_TYPE is
     still zero after this loop, format is invalid.  For now we
     simply use 0 as the value.  */

  /* Fill in the types of all the arguments.  */
  for (cnt = 0; cnt < nspecs; ++cnt)
    {
      /* If the width is determined by an argument this is an int.  */
      if (specs[cnt].width_arg != -1)
	args_type[specs[cnt].width_arg] = PA_INT;

      /* If the precision is determined by an argument this is an int.  */
      if (specs[cnt].prec_arg != -1)
	args_type[specs[cnt].prec_arg] = PA_INT;

      switch (specs[cnt].ndata_args)
	{
	case 0:		/* No arguments.  */
	  break;
	case 1:		/* One argument; we already have the
			   type and size.  */
	  args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
	  args_size[specs[cnt].data_arg] = specs[cnt].size;
	  break;
	default:
	  /* We have more than one argument for this format spec.
	     We must call the arginfo function again to determine
	     all the types.  */
	  (void) (*__printf_arginfo_table[specs[cnt].info.spec])
	    (&specs[cnt].info,
	     specs[cnt].ndata_args, &args_type[specs[cnt].data_arg],
	     &args_size[specs[cnt].data_arg]);
	  break;
	}
    }

  /* Now we know all the types and the order.  Fill in the argument
     values.  */
  for (cnt = 0; cnt < nargs; ++cnt)
    switch (args_type[cnt])
      {
#define T(tag, mem, type)				\
	case tag:					\
	  args_value[cnt].mem = va_arg (*ap_savep, type); \
	  break

	T (PA_WCHAR, pa_wchar, wint_t);
      case PA_CHAR:				/* Promoted.  */
      case PA_INT|PA_FLAG_SHORT:		/* Promoted.  */
#if LONG_MAX == INT_MAX
      case PA_INT|PA_FLAG_LONG:
#endif
	T (PA_INT, pa_int, int);
#if LONG_MAX == LONG_LONG_MAX
      case PA_INT|PA_FLAG_LONG:
#endif
	T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
#if LONG_MAX != INT_MAX && LONG_MAX != LONG_LONG_MAX
# error "he?"
#endif
      case PA_FLOAT:				/* Promoted.  */
	T (PA_DOUBLE, pa_double, double);
      case PA_DOUBLE|PA_FLAG_LONG_DOUBLE:
	if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0))
	  {
	    args_value[cnt].pa_double = va_arg (*ap_savep, double);
	    args_type[cnt] &= ~PA_FLAG_LONG_DOUBLE;
	  }
#if __HAVE_FLOAT128_UNLIKE_LDBL
	else if ((mode_flags & PRINTF_LDBL_USES_FLOAT128) != 0)
	  args_value[cnt].pa_float128 = va_arg (*ap_savep, _Float128);
#endif
	else
	  args_value[cnt].pa_long_double = va_arg (*ap_savep, long double);
	break;
      case PA_STRING:				/* All pointers are the same */
      case PA_WSTRING:			/* All pointers are the same */
	T (PA_POINTER, pa_pointer, void *);
#undef T
      default:
	if ((args_type[cnt] & PA_FLAG_PTR) != 0)
	  args_value[cnt].pa_pointer = va_arg (*ap_savep, void *);
	else if (__glibc_unlikely (__printf_va_arg_table != NULL)
		 && __printf_va_arg_table[args_type[cnt] - PA_LAST] != NULL)
	  {
	    args_value[cnt].pa_user = alloca (args_size[cnt]);
	    (*__printf_va_arg_table[args_type[cnt] - PA_LAST])
	      (args_value[cnt].pa_user, ap_savep);
	  }
	else
	  memset (&args_value[cnt], 0, sizeof (args_value[cnt]));
	break;
      case -1:
	/* Error case.  Not all parameters appear in N$ format
	   strings.  We have no way to determine their type.  */
	assert ((mode_flags & PRINTF_FORTIFY) != 0);
	__libc_fatal ("*** invalid %N$ use detected ***\n");
      }

  /* Now walk through all format specifiers and process them.  */
  for (; (size_t) nspecs_done < nspecs && !Xprintf_buffer_has_failed (buf);
       ++nspecs_done)
    {
      STEP4_TABLE;

      int is_negative;
      union
      {
	unsigned long long int longlong;
	unsigned long int word;
      } number;
      int base;
      CHAR_T *string;		/* Pointer to argument string.  */

      /* Fill variables from values in struct.  */
      int alt = specs[nspecs_done].info.alt;
      int space = specs[nspecs_done].info.space;
      int left = specs[nspecs_done].info.left;
      int showsign = specs[nspecs_done].info.showsign;
      int group = specs[nspecs_done].info.group;
      int is_long_double __attribute__ ((unused))
	= specs[nspecs_done].info.is_long_double;
      int is_short = specs[nspecs_done].info.is_short;
      int is_char = specs[nspecs_done].info.is_char;
      int is_long = specs[nspecs_done].info.is_long;
      int width = specs[nspecs_done].info.width;
      int prec = specs[nspecs_done].info.prec;
      int use_outdigits = specs[nspecs_done].info.i18n;
      char pad = specs[nspecs_done].info.pad;
      CHAR_T spec = specs[nspecs_done].info.spec;

      CHAR_T *workend = work_buffer + WORK_BUFFER_SIZE;

      /* Fill in last information.  */
      if (specs[nspecs_done].width_arg != -1)
	{
	  /* Extract the field width from an argument.  */
	  specs[nspecs_done].info.width =
	    args_value[specs[nspecs_done].width_arg].pa_int;

	  if (specs[nspecs_done].info.width < 0)
	    /* If the width value is negative left justification is
	       selected and the value is taken as being positive.  */
	    {
	      specs[nspecs_done].info.width *= -1;
	      left = specs[nspecs_done].info.left = 1;
	    }
	  width = specs[nspecs_done].info.width;
	}

      if (specs[nspecs_done].prec_arg != -1)
	{
	  /* Extract the precision from an argument.  */
	  specs[nspecs_done].info.prec =
	    args_value[specs[nspecs_done].prec_arg].pa_int;

	  if (specs[nspecs_done].info.prec < 0)
	    /* If the precision is negative the precision is
	       omitted.  */
	    specs[nspecs_done].info.prec = -1;

	  prec = specs[nspecs_done].info.prec;
	}

      /* Process format specifiers.  */
      do
	{
	  if (spec <= UCHAR_MAX
	      && __printf_function_table != NULL
	      && __printf_function_table[(size_t) spec] != NULL)
	    {
	      int function_done
		= Xprintf (function_invoke) (buf,
					     __printf_function_table[(size_t) spec],
					     &args_value[specs[nspecs_done]
							 .data_arg],
					     specs[nspecs_done].ndata_args,
					     &specs[nspecs_done].info);
	      if (function_done != -2)
		{
		  /* If an error occurred we don't have information
		     about # of chars.  */
		  if (function_done < 0)
		    {
		      /* Function has set errno.  */
		      Xprintf_buffer_mark_failed (buf);
		      goto all_done;
		    }
		  break;
		}
	    }

	  JUMP (spec, step4_jumps);

#define process_arg_data args_value[specs[nspecs_done].data_arg]
#define process_arg_int() process_arg_data.pa_int
#define process_arg_long_int() process_arg_data.pa_long_int
#define process_arg_long_long_int() process_arg_data.pa_long_long_int
#define process_arg_pointer() process_arg_data.pa_pointer
#define process_arg_string() process_arg_data.pa_string
#define process_arg_unsigned_int() process_arg_data.pa_u_int
#define process_arg_unsigned_long_int() process_arg_data.pa_u_long_int
#define process_arg_unsigned_long_long_int() process_arg_data.pa_u_long_long_int
#define process_arg_wchar_t() process_arg_data.pa_wchar
#define process_arg_wstring() process_arg_data.pa_wstring
#include "vfprintf-process-arg.c"
#undef process_arg_data
#undef process_arg_int
#undef process_arg_long_int
#undef process_arg_long_long_int
#undef process_arg_pointer
#undef process_arg_string
#undef process_arg_unsigned_int
#undef process_arg_unsigned_long_int
#undef process_arg_unsigned_long_long_int
#undef process_arg_wchar_t
#undef process_arg_wstring

	  LABEL (form_float):
	  LABEL (form_floathex):
	  {
	    const void *ptr
	      = (const void *) &args_value[specs[nspecs_done].data_arg];
	    if (__glibc_unlikely ((mode_flags & PRINTF_LDBL_IS_DBL) != 0))
	      {
		specs[nspecs_done].data_arg_type = PA_DOUBLE;
		specs[nspecs_done].info.is_long_double = 0;
	      }
	    SETUP_FLOAT128_INFO (specs[nspecs_done].info);

	    __printf_fp_spec (buf, &specs[nspecs_done].info, &ptr);
	  }
	  break;

	  LABEL (form_unknown):
	  {
	    printf_unknown (buf, &specs[nspecs_done].info);
	  }
	  break;
	}
      while (Xprintf_buffer_has_failed (buf));

      /* Write the following constant string.  */
      Xprintf_buffer_write (buf,
			      (const CHAR_T *) specs[nspecs_done].end_of_fmt,
			      (specs[nspecs_done].next_fmt
			       - specs[nspecs_done].end_of_fmt));
    }
 all_done:
  scratch_buffer_free (&argsbuf);
  scratch_buffer_free (&specsbuf);
}

/* Handle an unknown format specifier.  This prints out a canonicalized
   representation of the format spec itself.  */
static void
printf_unknown (struct Xprintf_buffer *buf, const struct printf_info *info)
{
  CHAR_T work_buffer[MAX (sizeof (info->width), sizeof (info->prec)) * 3];
  CHAR_T *const workend
    = &work_buffer[sizeof (work_buffer) / sizeof (CHAR_T)];
  CHAR_T *w;

  Xprintf_buffer_putc (buf, L_('%'));

  if (info->alt)
    Xprintf_buffer_putc (buf, L_('#'));
  if (info->group)
    Xprintf_buffer_putc (buf, L_('\''));
  if (info->showsign)
    Xprintf_buffer_putc (buf, L_('+'));
  else if (info->space)
    Xprintf_buffer_putc (buf, L_(' '));
  if (info->left)
    Xprintf_buffer_putc (buf, L_('-'));
  if (info->pad == L_('0'))
    Xprintf_buffer_putc (buf, L_('0'));
  if (info->i18n)
    Xprintf_buffer_putc (buf, L_('I'));

  if (info->width != 0)
    {
      w = _itoa_word (info->width, workend, 10, 0);
      while (w < workend)
	Xprintf_buffer_putc (buf, *w++);
    }

  if (info->prec != -1)
    {
      Xprintf_buffer_putc (buf, L_('.'));
      w = _itoa_word (info->prec, workend, 10, 0);
      while (w < workend)
	Xprintf_buffer_putc (buf, *w++);
    }

  if (info->spec != L_('\0'))
    Xprintf_buffer_putc (buf, info->spec);
}

static void
group_number (struct Xprintf_buffer *buf,
	      struct grouping_iterator *iter,
	      CHAR_T *from, CHAR_T *to, THOUSANDS_SEP_T thousands_sep,
	      bool i18n)
{
  if (!i18n)
    for (CHAR_T *cp = from; cp != to; ++cp)
      {
	if (__grouping_iterator_next (iter))
	  {
#ifdef COMPILE_WPRINTF
	    __wprintf_buffer_putc (buf, thousands_sep);
#else
	    __printf_buffer_puts (buf, thousands_sep);
#endif
	  }
	Xprintf_buffer_putc (buf, *cp);
      }
  else
    {
      /* Apply digit translation and grouping.  */
      for (CHAR_T *cp = from; cp != to; ++cp)
	{
	  if (__grouping_iterator_next (iter))
	    {
#ifdef COMPILE_WPRINTF
	      __wprintf_buffer_putc (buf, thousands_sep);
#else
	      __printf_buffer_puts (buf, thousands_sep);
#endif
	    }
	  int digit = *cp - '0';
#ifdef COMPILE_WPRINTF
	  __wprintf_buffer_putc
	    (buf, _NL_CURRENT_WORD (LC_CTYPE,
				    _NL_CTYPE_OUTDIGIT0_WC + digit));
#else
	  __printf_buffer_puts
	    (buf, _NL_CURRENT (LC_CTYPE, _NL_CTYPE_OUTDIGIT0_MB + digit));
#endif
	}
    }
}


/* The FILE-based function.  */
int
vfprintf (FILE *s, const CHAR_T *format, va_list ap, unsigned int mode_flags)
{
  /* Orient the stream.  */
#ifdef ORIENT
  ORIENT;
#endif

  /* Sanity check of arguments.  */
  ARGCHECK (s, format);

#ifdef ORIENT
  /* Check for correct orientation.  */
  if (_IO_vtable_offset (s) == 0
      && _IO_fwide (s, sizeof (CHAR_T) == 1 ? -1 : 1)
      != (sizeof (CHAR_T) == 1 ? -1 : 1))
    /* The stream is already oriented otherwise.  */
    return EOF;
#endif

  if (!_IO_need_lock (s))
    {
      struct Xprintf (buffer_to_file) wrap;
      Xprintf (buffer_to_file_init) (&wrap, s);
      Xprintf_buffer (&wrap.base, format, ap, mode_flags);
      return Xprintf (buffer_to_file_done) (&wrap);
    }

  int done;

  /* Lock stream.  */
  _IO_cleanup_region_start ((void (*) (void *)) &_IO_funlockfile, s);
  _IO_flockfile (s);

  /* Set up the wrapping buffer.  */
  struct Xprintf (buffer_to_file) wrap;
  Xprintf (buffer_to_file_init) (&wrap, s);

  /* Perform the printing operation on the buffer.  */
  Xprintf_buffer (&wrap.base, format, ap, mode_flags);
  done = Xprintf (buffer_to_file_done) (&wrap);

  /* Unlock the stream.  */
  _IO_funlockfile (s);
  _IO_cleanup_region_end (0);

  return done;
}