dlls/msvcrt/scanf.c

   1 /*
   2  * general implementation of scanf used by scanf, sscanf, fscanf,
   3  * _cscanf, wscanf, swscanf and fwscanf
   4  *
   5  * Copyright 1996,1998 Marcus Meissner
   6  * Copyright 1996 Jukka Iivonen
   7  * Copyright 1997,2000 Uwe Bonnes
   8  * Copyright 2000 Jon Griffiths
   9  * Copyright 2002 Daniel Gudbjartsson
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include <stdarg.h>
  27 #include <limits.h>
  28 #include <math.h>
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "winternl.h"
  33 #include "msvcrt.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  37
  38 extern MSVCRT_FILE MSVCRT__iob[];
  39
  40 /* helper function for *scanf.  Returns the value of character c in the
  41  * given base, or -1 if the given character is not a digit of the base.
  42  */
  43 static int char2digit(char c, int base) {
  44     if ((c>='0') && (c<='9') && (c<='0'+base-1)) return (c-'0');
  45     if (base<=10) return -1;
  46     if ((c>='A') && (c<='Z') && (c<='A'+base-11)) return (c-'A'+10);
  47     if ((c>='a') && (c<='z') && (c<='a'+base-11)) return (c-'a'+10);
  48     return -1;
  49 }
  50
  51 /* helper function for *wscanf.  Returns the value of character c in the
  52  * given base, or -1 if the given character is not a digit of the base.
  53  */
  54 static int wchar2digit(MSVCRT_wchar_t c, int base) {
  55     if ((c>='0') && (c<='9') && (c<='0'+base-1)) return (c-'0');
  56     if (base<=10) return -1;
  57     if ((c>='A') && (c<='Z') && (c<='A'+base-11)) return (c-'A'+10);
  58     if ((c>='a') && (c<='z') && (c<='a'+base-11)) return (c-'a'+10);
  59     return -1;
  60 }
  61
  62 /* vfscanf_l */
  63 #undef WIDE_SCANF
  64 #undef CONSOLE
  65 #undef STRING
  66 #undef SECURE
  67 #include "scanf.h"
  68
  69 /* vfscanf_l */
  70 #define SECURE 1
  71 #include "scanf.h"
  72
  73 /* vfwscanf_l */
  74 #define WIDE_SCANF 1
  75 #undef CONSOLE
  76 #undef STRING
  77 #undef SECURE
  78 #include "scanf.h"
  79
  80 /* vfwscanf_s_l */
  81 #define SECURE 1
  82 #include "scanf.h"
  83
  84 /* vsscanf_l */
  85 #undef WIDE_SCANF
  86 #undef CONSOLE
  87 #define STRING 1
  88 #undef SECURE
  89 #include "scanf.h"
  90
  91 /* vsscanf_s_l */
  92 #define SECURE 1
  93 #include "scanf.h"
  94
  95 /* vsnscanf_l */
  96 #undef SECURE
  97 #define STRING_LEN 1
  98 #include "scanf.h"
  99
 100 /* vsnscanf_s_l */
 101 #define SECURE
 102 #include "scanf.h"
 103
 104 /* vsnwscanf_l */
 105 #define WIDE_SCANF 1
 106 #undef SECURE
 107 #include "scanf.h"
 108
 109 /* vsnwscanf_s_l */
 110 #define SECURE 1
 111 #include "scanf.h"
 112 #undef STRING_LEN
 113
 114 /* vswscanf_l */
 115 #define WIDE_SCANF 1
 116 #undef CONSOLE
 117 #define STRING 1
 118 #undef SECURE
 119 #include "scanf.h"
 120
 121 /* vswscanf_s_l */
 122 #define SECURE 1
 123 #include "scanf.h"
 124
 125 /* vcscanf_l */
 126 #undef WIDE_SCANF
 127 #define CONSOLE 1
 128 #undef STRING
 129 #undef SECURE
 130 #include "scanf.h"
 131
 132 /* vcscanf_s_l */
 133 #define SECURE 1
 134 #include "scanf.h"
 135
 136 /* vcwscanf_l */
 137 #define WIDE_SCANF 1
 138 #define CONSOLE 1
 139 #undef STRING
 140 #undef SECURE
 141 #include "scanf.h"
 142
 143 /* vcwscanf_s_l */
 144 #define SECURE 1
 145 #include "scanf.h"
 146
 147
 148 /*********************************************************************
 149  *              fscanf (MSVCRT.@)
 150  */
 151 int CDECL MSVCRT_fscanf(MSVCRT_FILE *file, const char *format, ...)
 152 {
 153     __ms_va_list valist;
 154     int res;
 155
 156     __ms_va_start(valist, format);
 157     res = MSVCRT_vfscanf_l(file, format, NULL, valist);
 158     __ms_va_end(valist);
 159     return res;
 160 }
 161
 162 /*********************************************************************
 163  *              _fscanf_l (MSVCRT.@)
 164  */
 165 int CDECL MSVCRT__fscanf_l(MSVCRT_FILE *file, const char *format,
 166         MSVCRT__locale_t locale, ...)
 167 {
 168     __ms_va_list valist;
 169     int res;
 170
 171     __ms_va_start(valist, locale);
 172     res = MSVCRT_vfscanf_l(file, format, locale, valist);
 173     __ms_va_end(valist);
 174     return res;
 175 }
 176
 177 /*********************************************************************
 178  *              fscanf_s (MSVCRT.@)
 179  */
 180 int CDECL MSVCRT_fscanf_s(MSVCRT_FILE *file, const char *format, ...)
 181 {
 182     __ms_va_list valist;
 183     int res;
 184
 185     __ms_va_start(valist, format);
 186     res = MSVCRT_vfscanf_s_l(file, format, NULL, valist);
 187     __ms_va_end(valist);
 188     return res;
 189 }
 190
 191 /*********************************************************************
 192  *              _fscanf_s_l (MSVCRT.@)
 193  */
 194 int CDECL MSVCRT__fscanf_s_l(MSVCRT_FILE *file, const char *format,
 195         MSVCRT__locale_t locale, ...)
 196 {
 197     __ms_va_list valist;
 198     int res;
 199
 200     __ms_va_start(valist, locale);
 201     res = MSVCRT_vfscanf_s_l(file, format, locale, valist);
 202     __ms_va_end(valist);
 203     return res;
 204 }
 205
 206 /*********************************************************************
 207  *              scanf (MSVCRT.@)
 208  */
 209 int CDECL MSVCRT_scanf(const char *format, ...)
 210 {
 211     __ms_va_list valist;
 212     int res;
 213
 214     __ms_va_start(valist, format);
 215     res = MSVCRT_vfscanf_l(MSVCRT_stdin, format, NULL, valist);
 216     __ms_va_end(valist);
 217     return res;
 218 }
 219
 220 /*********************************************************************
 221  *              _scanf_l (MSVCRT.@)
 222  */
 223 int CDECL MSVCRT__scanf_l(const char *format, MSVCRT__locale_t locale, ...)
 224 {
 225     __ms_va_list valist;
 226     int res;
 227
 228     __ms_va_start(valist, locale);
 229     res = MSVCRT_vfscanf_l(MSVCRT_stdin, format, locale, valist);
 230     __ms_va_end(valist);
 231     return res;
 232 }
 233
 234 /*********************************************************************
 235  *              scanf_s (MSVCRT.@)
 236  */
 237 int CDECL MSVCRT_scanf_s(const char *format, ...)
 238 {
 239     __ms_va_list valist;
 240     int res;
 241
 242     __ms_va_start(valist, format);
 243     res = MSVCRT_vfscanf_s_l(MSVCRT_stdin, format, NULL, valist);
 244     __ms_va_end(valist);
 245     return res;
 246 }
 247
 248 /*********************************************************************
 249  *              _scanf_s_l (MSVCRT.@)
 250  */
 251 int CDECL MSVCRT__scanf_s_l(const char *format, MSVCRT__locale_t locale, ...)
 252 {
 253     __ms_va_list valist;
 254     int res;
 255
 256     __ms_va_start(valist, locale);
 257     res = MSVCRT_vfscanf_s_l(MSVCRT_stdin, format, locale, valist);
 258     __ms_va_end(valist);
 259     return res;
 260 }
 261
 262 /*********************************************************************
 263  *              fwscanf (MSVCRT.@)
 264  */
 265 int CDECL MSVCRT_fwscanf(MSVCRT_FILE *file, const MSVCRT_wchar_t *format, ...)
 266 {
 267     __ms_va_list valist;
 268     int res;
 269
 270     __ms_va_start(valist, format);
 271     res = MSVCRT_vfwscanf_l(file, format, NULL, valist);
 272     __ms_va_end(valist);
 273     return res;
 274 }
 275
 276 /*********************************************************************
 277  *              _fwscanf_l (MSVCRT.@)
 278  */
 279 int CDECL MSVCRT__fwscanf_l(MSVCRT_FILE *file, const MSVCRT_wchar_t *format,
 280         MSVCRT__locale_t locale, ...)
 281 {
 282     __ms_va_list valist;
 283     int res;
 284
 285     __ms_va_start(valist, locale);
 286     res = MSVCRT_vfwscanf_l(file, format, locale, valist);
 287     __ms_va_end(valist);
 288     return res;
 289 }
 290
 291 /*********************************************************************
 292  *              fwscanf_s (MSVCRT.@)
 293  */
 294 int CDECL MSVCRT_fwscanf_s(MSVCRT_FILE *file, const MSVCRT_wchar_t *format, ...)
 295 {
 296     __ms_va_list valist;
 297     int res;
 298
 299     __ms_va_start(valist, format);
 300     res = MSVCRT_vfwscanf_s_l(file, format, NULL, valist);
 301     __ms_va_end(valist);
 302     return res;
 303 }
 304
 305 /*********************************************************************
 306  *              _fwscanf_s_l (MSVCRT.@)
 307  */
 308 int CDECL MSVCRT__fwscanf_s_l(MSVCRT_FILE *file, const MSVCRT_wchar_t *format,
 309         MSVCRT__locale_t locale, ...)
 310 {
 311     __ms_va_list valist;
 312     int res;
 313
 314     __ms_va_start(valist, locale);
 315     res = MSVCRT_vfwscanf_s_l(file, format, locale, valist);
 316     __ms_va_end(valist);
 317     return res;
 318 }
 319
 320 /*********************************************************************
 321  *              wscanf (MSVCRT.@)
 322  */
 323 int CDECL MSVCRT_wscanf(const MSVCRT_wchar_t *format, ...)
 324 {
 325     __ms_va_list valist;
 326     int res;
 327
 328     __ms_va_start(valist, format);
 329     res = MSVCRT_vfwscanf_l(MSVCRT_stdin, format, NULL, valist);
 330     __ms_va_end(valist);
 331     return res;
 332 }
 333
 334 /*********************************************************************
 335  *              _wscanf_l (MSVCRT.@)
 336  */
 337 int CDECL MSVCRT__wscanf_l(const MSVCRT_wchar_t *format,
 338         MSVCRT__locale_t locale, ...)
 339 {
 340     __ms_va_list valist;
 341     int res;
 342
 343     __ms_va_start(valist, locale);
 344     res = MSVCRT_vfwscanf_l(MSVCRT_stdin, format, locale, valist);
 345     __ms_va_end(valist);
 346     return res;
 347 }
 348
 349 /*********************************************************************
 350  *              wscanf_s (MSVCRT.@)
 351  */
 352 int CDECL MSVCRT_wscanf_s(const MSVCRT_wchar_t *format, ...)
 353 {
 354     __ms_va_list valist;
 355     int res;
 356
 357     __ms_va_start(valist, format);
 358     res = MSVCRT_vfwscanf_s_l(MSVCRT_stdin, format, NULL, valist);
 359     __ms_va_end(valist);
 360     return res;
 361 }
 362
 363 /*********************************************************************
 364  *              _wscanf_s_l (MSVCRT.@)
 365  */
 366 int CDECL MSVCRT__wscanf_s_l(const MSVCRT_wchar_t *format,
 367         MSVCRT__locale_t locale, ...)
 368 {
 369     __ms_va_list valist;
 370     int res;
 371
 372     __ms_va_start(valist, locale);
 373     res = MSVCRT_vfwscanf_s_l(MSVCRT_stdin, format, locale, valist);
 374     __ms_va_end(valist);
 375     return res;
 376 }
 377
 378 /*********************************************************************
 379  *              sscanf (MSVCRT.@)
 380  */
 381 int CDECL MSVCRT_sscanf(const char *str, const char *format, ...)
 382 {
 383     __ms_va_list valist;
 384     int res;
 385
 386     __ms_va_start(valist, format);
 387     res = MSVCRT_vsscanf_l(str, format, NULL, valist);
 388     __ms_va_end(valist);
 389     return res;
 390 }
 391
 392 /*********************************************************************
 393  *              _sscanf_l (MSVCRT.@)
 394  */
 395 int CDECL MSVCRT__sscanf_l(const char *str, const char *format,
 396         MSVCRT__locale_t locale, ...)
 397 {
 398     __ms_va_list valist;
 399     int res;
 400
 401     __ms_va_start(valist, locale);
 402     res = MSVCRT_vsscanf_l(str, format, locale, valist);
 403     __ms_va_end(valist);
 404     return res;
 405 }
 406
 407 /*********************************************************************
 408  *              sscanf_s (MSVCRT.@)
 409  */
 410 int CDECL MSVCRT_sscanf_s(const char *str, const char *format, ...)
 411 {
 412     __ms_va_list valist;
 413     int res;
 414
 415     __ms_va_start(valist, format);
 416     res = MSVCRT_vsscanf_s_l(str, format, NULL, valist);
 417     __ms_va_end(valist);
 418     return res;
 419 }
 420
 421 /*********************************************************************
 422  *              _sscanf_s_l (MSVCRT.@)
 423  */
 424 int CDECL MSVCRT__sscanf_s_l(const char *str, const char *format,
 425         MSVCRT__locale_t locale, ...)
 426 {
 427     __ms_va_list valist;
 428     int res;
 429
 430     __ms_va_start(valist, locale);
 431     res = MSVCRT_vsscanf_s_l(str, format, locale, valist);
 432     __ms_va_end(valist);
 433     return res;
 434 }
 435
 436 /*********************************************************************
 437  *              swscanf (MSVCRT.@)
 438  */
 439 int CDECL MSVCRT_swscanf(const MSVCRT_wchar_t *str, const MSVCRT_wchar_t *format, ...)
 440 {
 441     __ms_va_list valist;
 442     int res;
 443
 444     __ms_va_start(valist, format);
 445     res = MSVCRT_vswscanf_l(str, format, NULL, valist);
 446     __ms_va_end(valist);
 447     return res;
 448 }
 449
 450 /*********************************************************************
 451  *              _swscanf_l (MSVCRT.@)
 452  */
 453 int CDECL MSVCRT__swscanf_l(const MSVCRT_wchar_t *str, const MSVCRT_wchar_t *format,
 454         MSVCRT__locale_t locale, ...)
 455 {
 456     __ms_va_list valist;
 457     int res;
 458
 459     __ms_va_start(valist, locale);
 460     res = MSVCRT_vswscanf_l(str, format, locale, valist);
 461     __ms_va_end(valist);
 462     return res;
 463 }
 464
 465 /*********************************************************************
 466  *              swscanf_s (MSVCRT.@)
 467  */
 468 int CDECL MSVCRT_swscanf_s(const MSVCRT_wchar_t *str, const MSVCRT_wchar_t *format, ...)
 469 {
 470     __ms_va_list valist;
 471     int res;
 472
 473     __ms_va_start(valist, format);
 474     res = MSVCRT_vswscanf_s_l(str, format, NULL, valist);
 475     __ms_va_end(valist);
 476     return res;
 477 }
 478
 479 /*********************************************************************
 480  *              _swscanf_s_l (MSVCRT.@)
 481  */
 482 int CDECL MSVCRT__swscanf_s_l(const MSVCRT_wchar_t *str, const MSVCRT_wchar_t *format,
 483         MSVCRT__locale_t locale, ...)
 484 {
 485     __ms_va_list valist;
 486     int res;
 487
 488     __ms_va_start(valist, locale);
 489     res = MSVCRT_vswscanf_s_l(str, format, locale, valist);
 490     __ms_va_end(valist);
 491     return res;
 492 }
 493
 494 /*********************************************************************
 495  *              _cscanf (MSVCRT.@)
 496  */
 497 int CDECL _cscanf(const char *format, ...)
 498 {
 499     __ms_va_list valist;
 500     int res;
 501
 502     __ms_va_start(valist, format);
 503     res = MSVCRT_vcscanf_l(format, NULL, valist);
 504     __ms_va_end(valist);
 505     return res;
 506 }
 507
 508 /*********************************************************************
 509  *              _cscanf_l (MSVCRT.@)
 510  */
 511 int CDECL _cscanf_l(const char *format, MSVCRT__locale_t locale, ...)
 512 {
 513     __ms_va_list valist;
 514     int res;
 515
 516     __ms_va_start(valist, locale);
 517     res = MSVCRT_vcscanf_l(format, locale, valist);
 518     __ms_va_end(valist);
 519     return res;
 520 }
 521
 522 /*********************************************************************
 523  *              _cscanf_s (MSVCRT.@)
 524  */
 525 int CDECL _cscanf_s(const char *format, ...)
 526 {
 527     __ms_va_list valist;
 528     int res;
 529
 530     __ms_va_start(valist, format);
 531     res = MSVCRT_vcscanf_s_l(format, NULL, valist);
 532     __ms_va_end(valist);
 533     return res;
 534 }
 535
 536 /*********************************************************************
 537  *              _cscanf_s_l (MSVCRT.@)
 538  */
 539 int CDECL _cscanf_s_l(const char *format, MSVCRT__locale_t locale, ...)
 540 {
 541     __ms_va_list valist;
 542     int res;
 543
 544     __ms_va_start(valist, locale);
 545     res = MSVCRT_vcscanf_s_l(format, locale, valist);
 546     __ms_va_end(valist);
 547     return res;
 548 }
 549
 550 /*********************************************************************
 551  *              _cwscanf (MSVCRT.@)
 552  */
 553 int CDECL _cwscanf(const char *format, ...)
 554 {
 555     __ms_va_list valist;
 556     int res;
 557
 558     __ms_va_start(valist, format);
 559     res = MSVCRT_vcwscanf_l(format, NULL, valist);
 560     __ms_va_end(valist);
 561     return res;
 562 }
 563
 564 /*********************************************************************
 565  *              _cwscanf_l (MSVCRT.@)
 566  */
 567 int CDECL _cwscanf_l(const char *format, MSVCRT__locale_t locale, ...)
 568 {
 569     __ms_va_list valist;
 570     int res;
 571
 572     __ms_va_start(valist, locale);
 573     res = MSVCRT_vcwscanf_l(format, locale, valist);
 574     __ms_va_end(valist);
 575     return res;
 576 }
 577
 578 /*********************************************************************
 579  *              _cwscanf_s (MSVCRT.@)
 580  */
 581 int CDECL _cwscanf_s(const char *format, ...)
 582 {
 583     __ms_va_list valist;
 584     int res;
 585
 586     __ms_va_start(valist, format);
 587     res = MSVCRT_vcwscanf_s_l(format, NULL, valist);
 588     __ms_va_end(valist);
 589     return res;
 590 }
 591
 592 /*********************************************************************
 593  *              _cwscanf_s_l (MSVCRT.@)
 594  */
 595 int CDECL _cwscanf_s_l(const char *format, MSVCRT__locale_t locale, ...)
 596 {
 597     __ms_va_list valist;
 598     int res;
 599
 600     __ms_va_start(valist, locale);
 601     res = MSVCRT_vcwscanf_s_l(format, locale, valist);
 602     __ms_va_end(valist);
 603     return res;
 604 }
 605
 606 /*********************************************************************
 607  *              _snscanf (MSVCRT.@)
 608  */
 609 int CDECL MSVCRT__snscanf(char *input, MSVCRT_size_t length, const char *format, ...)
 610 {
 611     __ms_va_list valist;
 612     int res;
 613
 614     __ms_va_start(valist, format);
 615     res = MSVCRT_vsnscanf_l(input, length, format, NULL, valist);
 616     __ms_va_end(valist);
 617     return res;
 618 }
 619
 620 /*********************************************************************
 621  *              _snscanf_l (MSVCRT.@)
 622  */
 623 int CDECL MSVCRT__snscanf_l(char *input, MSVCRT_size_t length,
 624         const char *format, MSVCRT__locale_t locale, ...)
 625 {
 626     __ms_va_list valist;
 627     int res;
 628
 629     __ms_va_start(valist, locale);
 630     res = MSVCRT_vsnscanf_l(input, length, format, locale, valist);
 631     __ms_va_end(valist);
 632     return res;
 633 }
 634
 635 /*********************************************************************
 636  *              _snscanf_s (MSVCRT.@)
 637  */
 638 int CDECL MSVCRT__snscanf_s(char *input, MSVCRT_size_t length, const char *format, ...)
 639 {
 640     __ms_va_list valist;
 641     int res;
 642
 643     __ms_va_start(valist, format);
 644     res = MSVCRT_vsnscanf_s_l(input, length, format, NULL, valist);
 645     __ms_va_end(valist);
 646     return res;
 647 }
 648
 649 /*********************************************************************
 650  *              _snscanf_s_l (MSVCRT.@)
 651  */
 652 int CDECL MSVCRT__snscanf_s_l(char *input, MSVCRT_size_t length,
 653         const char *format, MSVCRT__locale_t locale, ...)
 654 {
 655     __ms_va_list valist;
 656     int res;
 657
 658     __ms_va_start(valist, locale);
 659     res = MSVCRT_vsnscanf_s_l(input, length, format, locale, valist);
 660     __ms_va_end(valist);
 661     return res;
 662 }
 663
 664 /*********************************************************************
 665  *              _snwscanf (MSVCRT.@)
 666  */
 667 int CDECL MSVCRT__snwscanf(MSVCRT_wchar_t *input, MSVCRT_size_t length,
 668         const MSVCRT_wchar_t *format, ...)
 669 {
 670     __ms_va_list valist;
 671     int res;
 672
 673     __ms_va_start(valist, format);
 674     res = MSVCRT_vsnwscanf_l(input, length, format, NULL, valist);
 675     __ms_va_end(valist);
 676     return res;
 677 }
 678
 679 /*********************************************************************
 680  *              _snwscanf_l (MSVCRT.@)
 681  */
 682 int CDECL MSVCRT__snwscanf_l(MSVCRT_wchar_t *input, MSVCRT_size_t length,
 683         const MSVCRT_wchar_t *format, MSVCRT__locale_t locale, ...)
 684 {
 685     __ms_va_list valist;
 686     int res;
 687
 688     __ms_va_start(valist, locale);
 689     res = MSVCRT_vsnwscanf_l(input, length, format, locale, valist);
 690     __ms_va_end(valist);
 691     return res;
 692 }
 693
 694 /*********************************************************************
 695  *              _snwscanf_s (MSVCRT.@)
 696  */
 697 int CDECL MSVCRT__snwscanf_s(MSVCRT_wchar_t *input, MSVCRT_size_t length,
 698         const MSVCRT_wchar_t *format, ...)
 699 {
 700     __ms_va_list valist;
 701     int res;
 702
 703     __ms_va_start(valist, format);
 704     res = MSVCRT_vsnwscanf_s_l(input, length, format, NULL, valist);
 705     __ms_va_end(valist);
 706     return res;
 707 }
 708
 709 /*********************************************************************
 710  *              _snscanf_s_l (MSVCRT.@)
 711  */
 712 int CDECL MSVCRT__snwscanf_s_l(MSVCRT_wchar_t *input, MSVCRT_size_t length,
 713         const MSVCRT_wchar_t *format, MSVCRT__locale_t locale, ...)
 714 {
 715     __ms_va_list valist;
 716     int res;
 717
 718     __ms_va_start(valist, locale);
 719     res = MSVCRT_vsnwscanf_s_l(input, length, format, locale, valist);
 720     __ms_va_end(valist);
 721     return res;
 722 }