src/system/libroot/posix/glibc/libio/libio.h

   1 /* Copyright (C) 1991-1995, 1997-2001, 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Written by Per Bothner <bothner@cygnus.com>.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.
  19
  20    As a special exception, if you link the code in this file with
  21    files compiled with a GNU compiler to produce an executable,
  22    that does not cause the resulting executable to be covered by
  23    the GNU Lesser General Public License.  This exception does not
  24    however invalidate any other reasons why the executable file
  25    might be covered by the GNU Lesser General Public License.
  26    This exception applies to code released by its copyright holders
  27    in files containing the exception.  */
  28
  29 #ifndef _IO_STDIO_H
  30 #define _IO_STDIO_H
  31
  32 #include <_G_config.h>
  33 /* ALL of these should be defined in _G_config.h */
  34 #define _IO_pos_t _G_fpos_t /* obsolete */
  35 #define _IO_fpos_t _G_fpos_t
  36 #define _IO_fpos64_t _G_fpos64_t
  37 #define _IO_size_t _G_size_t
  38 #define _IO_ssize_t _G_ssize_t
  39 #define _IO_off_t _G_off_t
  40 #define _IO_off64_t _G_off64_t
  41 #define _IO_pid_t _G_pid_t
  42 #define _IO_uid_t _G_uid_t
  43 #define _IO_iconv_t _G_iconv_t
  44 #define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT
  45 #define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE
  46 #define _IO_BUFSIZ _G_BUFSIZ
  47 #define _IO_va_list _G_va_list
  48 #define _IO_wint_t _G_wint_t
  49 #define __mbstate_t __c_mbstate_t
  50
  51 #ifdef _G_NEED_STDARG_H
  52 /* This define avoids name pollution if we're using GNU stdarg.h */
  53 # define __need___va_list
  54 # include <stdarg.h>
  55 # ifdef __GNUC_VA_LIST
  56 #  undef _IO_va_list
  57 #  define _IO_va_list __gnuc_va_list
  58 # endif /* __GNUC_VA_LIST */
  59 #endif
  60
  61 #ifndef __P
  62 # if _G_HAVE_SYS_CDEFS
  63 #  include <sys/cdefs.h>
  64 # else
  65 #  ifdef __STDC__
  66 #   define __P(p) p
  67 #   define __PMT(p) p
  68 #  else
  69 #   define __P(p) ()
  70 #   define __PMT(p) ()
  71 #  endif
  72 # endif
  73 #endif /*!__P*/
  74
  75 /* For backward compatibility */
  76 #ifndef _PARAMS
  77 # define _PARAMS(protos) __P(protos)
  78 #endif /*!_PARAMS*/
  79
  80 #ifndef __STDC__
  81 # ifndef const
  82 #  define const
  83 # endif
  84 #endif
  85 #define _IO_UNIFIED_JUMPTABLES 1
  86 #ifndef _G_HAVE_PRINTF_FP
  87 # define _IO_USE_DTOA 1
  88 #endif
  89
  90 #ifndef EOF
  91 # define EOF (-1)
  92 #endif
  93 #ifndef NULL
  94 # if defined __GNUG__ && \
  95     (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
  96 #  define NULL (__null)
  97 # else
  98 #  if !defined(__cplusplus)
  99 #   define NULL ((void*)0)
 100 #  else
 101 #   define NULL (0)
 102 #  endif
 103 # endif
 104 #endif
 105
 106 #define _IOS_INPUT      1
 107 #define _IOS_OUTPUT     2
 108 #define _IOS_ATEND      4
 109 #define _IOS_APPEND     8
 110 #define _IOS_TRUNC      16
 111 #define _IOS_NOCREATE   32
 112 #define _IOS_NOREPLACE  64
 113 #define _IOS_BIN        128
 114
 115 /* Magic numbers and bits for the _flags field.
 116    The magic numbers use the high-order bits of _flags;
 117    the remaining bits are available for variable flags.
 118    Note: The magic numbers must all be negative if stdio
 119    emulation is desired. */
 120
 121 #define _IO_MAGIC 0xFBAD0000 /* Magic number */
 122 #define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */
 123 #define _IO_MAGIC_MASK 0xFFFF0000
 124 #define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */
 125 #define _IO_UNBUFFERED 2
 126 #define _IO_NO_READS 4 /* Reading not allowed */
 127 #define _IO_NO_WRITES 8 /* Writing not allowd */
 128 #define _IO_EOF_SEEN 0x10
 129 #define _IO_ERR_SEEN 0x20
 130 #define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */
 131 #define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/
 132 #define _IO_IN_BACKUP 0x100
 133 #define _IO_LINE_BUF 0x200
 134 #define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */
 135 #define _IO_CURRENTLY_PUTTING 0x800
 136 #define _IO_IS_APPENDING 0x1000
 137 #define _IO_IS_FILEBUF 0x2000
 138 #define _IO_BAD_SEEN 0x4000
 139 #define _IO_USER_LOCK 0x8000
 140
 141 #define _IO_FLAGS2_MMAP 1
 142 #define _IO_FLAGS2_USER_WBUF 8
 143
 144 /* These are "formatting flags" matching the iostream fmtflags enum values. */
 145 #define _IO_SKIPWS 01
 146 #define _IO_LEFT 02
 147 #define _IO_RIGHT 04
 148 #define _IO_INTERNAL 010
 149 #define _IO_DEC 020
 150 #define _IO_OCT 040
 151 #define _IO_HEX 0100
 152 #define _IO_SHOWBASE 0200
 153 #define _IO_SHOWPOINT 0400
 154 #define _IO_UPPERCASE 01000
 155 #define _IO_SHOWPOS 02000
 156 #define _IO_SCIENTIFIC 04000
 157 #define _IO_FIXED 010000
 158 #define _IO_UNITBUF 020000
 159 #define _IO_STDIO 040000
 160 #define _IO_DONT_CLOSE 0100000
 161 #define _IO_BOOLALPHA 0200000
 162
 163
 164 struct _IO_jump_t;  struct _IO_FILE;
 165
 166 /* Handle lock.  */
 167 #ifdef _IO_MTSAFE_IO
 168 # if defined __GLIBC__ && __GLIBC__ >= 2
 169 #  include <bits/stdio-lock.h>
 170 # else
 171 /*# include <comthread.h>*/
 172 # endif
 173 #else
 174 typedef void _IO_lock_t;
 175 #endif
 176
 177
 178 /* A streammarker remembers a position in a buffer. */
 179
 180 struct _IO_marker {
 181   struct _IO_marker *_next;
 182   struct _IO_FILE *_sbuf;
 183   /* If _pos >= 0
 184  it points to _buf->Gbase()+_pos. FIXME comment */
 185   /* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */
 186   int _pos;
 187 #if 0
 188     void set_streampos(streampos sp) { _spos = sp; }
 189     void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); }
 190   public:
 191     streammarker(streambuf *sb);
 192     ~streammarker();
 193     int saving() { return  _spos == -2; }
 194     int delta(streammarker&);
 195     int delta();
 196 #endif
 197 };
 198
 199 /* This is the structure from the libstdc++ codecvt class.  */
 200 enum __codecvt_result
 201 {
 202   __codecvt_ok,
 203   __codecvt_partial,
 204   __codecvt_error,
 205   __codecvt_noconv
 206 };
 207
 208 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
 209 /* The order of the elements in the following struct must match the order
 210    of the virtual functions in the libstdc++ codecvt class.  */
 211 struct _IO_codecvt
 212 {
 213   void (*__codecvt_destr) (struct _IO_codecvt *);
 214   enum __codecvt_result (*__codecvt_do_out) (struct _IO_codecvt *,
 215                                              __mbstate_t *,
 216                                              const wchar_t *,
 217                                              const wchar_t *,
 218                                              const wchar_t **, char *,
 219                                              char *, char **);
 220   enum __codecvt_result (*__codecvt_do_unshift) (struct _IO_codecvt *,
 221                                                  __mbstate_t *, char *,
 222                                                  char *, char **);
 223   enum __codecvt_result (*__codecvt_do_in) (struct _IO_codecvt *,
 224                                             __mbstate_t *,
 225                                             const char *, const char *,
 226                                             const char **, wchar_t *,
 227                                             wchar_t *, wchar_t **);
 228   int (*__codecvt_do_encoding) (struct _IO_codecvt *);
 229   int (*__codecvt_do_always_noconv) (struct _IO_codecvt *);
 230   int (*__codecvt_do_length) (struct _IO_codecvt *, __mbstate_t *,
 231                               const char *, const char *, _IO_size_t);
 232   int (*__codecvt_do_max_length) (struct _IO_codecvt *);
 233
 234   _IO_iconv_t __cd_in;
 235   _IO_iconv_t __cd_out;
 236 };
 237
 238 /* Extra data for wide character streams.  */
 239 struct _IO_wide_data
 240 {
 241   wchar_t *_IO_read_ptr;        /* Current read pointer */
 242   wchar_t *_IO_read_end;        /* End of get area. */
 243   wchar_t *_IO_read_base;       /* Start of putback+get area. */
 244   wchar_t *_IO_write_base;      /* Start of put area. */
 245   wchar_t *_IO_write_ptr;       /* Current put pointer. */
 246   wchar_t *_IO_write_end;       /* End of put area. */
 247   wchar_t *_IO_buf_base;        /* Start of reserve area. */
 248   wchar_t *_IO_buf_end;         /* End of reserve area. */
 249   /* The following fields are used to support backing up and undo. */
 250   wchar_t *_IO_save_base;       /* Pointer to start of non-current get area. */
 251   wchar_t *_IO_backup_base;     /* Pointer to first valid character of
 252                                    backup area */
 253   wchar_t *_IO_save_end;        /* Pointer to end of non-current get area. */
 254
 255   __mbstate_t _IO_state;
 256   __mbstate_t _IO_last_state;
 257   struct _IO_codecvt _codecvt;
 258
 259   wchar_t _shortbuf[1];
 260
 261   struct _IO_jump_t *_wide_vtable;
 262 };
 263 #endif
 264
 265 struct _IO_FILE {
 266   int _flags;           /* High-order word is _IO_MAGIC; rest is flags. */
 267 #define _IO_file_flags _flags
 268
 269   /* The following pointers correspond to the C++ streambuf protocol. */
 270   /* Note:  Tk uses the _IO_read_ptr and _IO_read_end fields directly. */
 271   char* _IO_read_ptr;   /* Current read pointer */
 272   char* _IO_read_end;   /* End of get area. */
 273   char* _IO_read_base;  /* Start of putback+get area. */
 274   char* _IO_write_base; /* Start of put area. */
 275   char* _IO_write_ptr;  /* Current put pointer. */
 276   char* _IO_write_end;  /* End of put area. */
 277   char* _IO_buf_base;   /* Start of reserve area. */
 278   char* _IO_buf_end;    /* End of reserve area. */
 279   /* The following fields are used to support backing up and undo. */
 280   char *_IO_save_base; /* Pointer to start of non-current get area. */
 281   char *_IO_backup_base;  /* Pointer to first valid character of backup area */
 282   char *_IO_save_end; /* Pointer to end of non-current get area. */
 283
 284   struct _IO_marker *_markers;
 285
 286   struct _IO_FILE *_chain;
 287
 288   int _fileno;
 289 #if 0
 290   int _blksize;
 291 #else
 292   int _flags2;
 293 #endif
 294   _IO_off_t _old_offset; /* This used to be _offset but it's too small.  */
 295
 296 #define __HAVE_COLUMN /* temporary */
 297   /* 1+column number of pbase(); 0 is unknown. */
 298   unsigned short _cur_column;
 299   signed char _vtable_offset;
 300   char _shortbuf[1];
 301
 302   /*  char* _save_gptr;  char* _save_egptr; */
 303
 304   _IO_lock_t *_lock;
 305 #ifdef _IO_USE_OLD_IO_FILE
 306 };
 307
 308 struct _IO_FILE_complete
 309 {
 310   struct _IO_FILE _file;
 311 #endif
 312 #if defined _G_IO_IO_FILE_VERSION && _G_IO_IO_FILE_VERSION == 0x20001
 313   _IO_off64_t _offset;
 314 # if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
 315   /* Wide character stream stuff.  */
 316   struct _IO_codecvt *_codecvt;
 317   struct _IO_wide_data *_wide_data;
 318 # else
 319   void *__pad1;
 320   void *__pad2;
 321 # endif
 322   int _mode;
 323   /* Make sure we don't get into trouble again.  */
 324   char _unused2[15 * sizeof (int) - 2 * sizeof (void *)];
 325 #endif
 326 };
 327
 328 #ifndef __cplusplus
 329 typedef struct _IO_FILE _IO_FILE;
 330 #endif
 331
 332 struct _IO_FILE_plus;
 333
 334 #if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
 335 #define _IO_stdin_ _IO_2_1_stdin_
 336 #define _IO_stdout_ _IO_2_1_stdout_
 337 #define _IO_stderr_ _IO_2_1_stderr_
 338 #endif
 339
 340 extern struct _IO_FILE_plus _IO_2_1_stdin_;
 341 extern struct _IO_FILE_plus _IO_2_1_stdout_;
 342 extern struct _IO_FILE_plus _IO_2_1_stderr_;
 343 #ifndef _LIBC
 344 #define _IO_stdin ((_IO_FILE*)(&_IO_2_1_stdin_))
 345 #define _IO_stdout ((_IO_FILE*)(&_IO_2_1_stdout_))
 346 #define _IO_stderr ((_IO_FILE*)(&_IO_2_1_stderr_))
 347 #else
 348 extern _IO_FILE *_IO_stdin attribute_hidden;
 349 extern _IO_FILE *_IO_stdout attribute_hidden;
 350 extern _IO_FILE *_IO_stderr attribute_hidden;
 351 #endif
 352
 353 /* Functions to do I/O and file management for a stream.  */
 354
 355 /* Read NBYTES bytes from COOKIE into a buffer pointed to by BUF.
 356    Return number of bytes read.  */
 357 typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
 358
 359 /* Write N bytes pointed to by BUF to COOKIE.  Write all N bytes
 360    unless there is an error.  Return number of bytes written, or -1 if
 361    there is an error without writing anything.  If the file has been
 362    opened for append (__mode.__append set), then set the file pointer
 363    to the end of the file and then do the write; if not, just write at
 364    the current file pointer.  */
 365 typedef __ssize_t __io_write_fn (void *__cookie, __const char *__buf,
 366                                  size_t __n);
 367
 368 /* Move COOKIE's file position to *POS bytes from the
 369    beginning of the file (if W is SEEK_SET),
 370    the current position (if W is SEEK_CUR),
 371    or the end of the file (if W is SEEK_END).
 372    Set *POS to the new file position.
 373    Returns zero if successful, nonzero if not.  */
 374 typedef int __io_seek_fn (void *__cookie, _IO_off64_t *__pos, int __w);
 375
 376 /* Close COOKIE.  */
 377 typedef int __io_close_fn (void *__cookie);
 378
 379
 380 #ifdef _GNU_SOURCE
 381 /* User-visible names for the above.  */
 382 typedef __io_read_fn cookie_read_function_t;
 383 typedef __io_write_fn cookie_write_function_t;
 384 typedef __io_seek_fn cookie_seek_function_t;
 385 typedef __io_close_fn cookie_close_function_t;
 386
 387 /* The structure with the cookie function pointers.  */
 388 typedef struct
 389 {
 390   __io_read_fn *read;           /* Read bytes.  */
 391   __io_write_fn *write;         /* Write bytes.  */
 392   __io_seek_fn *seek;           /* Seek/tell file position.  */
 393   __io_close_fn *close;         /* Close file.  */
 394 } _IO_cookie_io_functions_t;
 395 typedef _IO_cookie_io_functions_t cookie_io_functions_t;
 396
 397 struct _IO_cookie_file;
 398
 399 /* Initialize one of those.  */
 400 extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write,
 401                              void *__cookie, _IO_cookie_io_functions_t __fns);
 402 #endif
 403
 404
 405 #ifdef __cplusplus
 406 extern "C" {
 407 #endif
 408
 409 extern int __underflow (_IO_FILE *) __THROW;
 410 extern int __uflow (_IO_FILE *) __THROW;
 411 extern int __overflow (_IO_FILE *, int) __THROW;
 412 extern _IO_wint_t __wunderflow (_IO_FILE *) __THROW;
 413 extern _IO_wint_t __wuflow (_IO_FILE *) __THROW;
 414 extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t) __THROW;
 415
 416 #define _IO_getc_unlocked(_fp) \
 417        ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end ? __uflow (_fp) \
 418         : *(unsigned char *) (_fp)->_IO_read_ptr++)
 419 #define _IO_peekc_unlocked(_fp) \
 420        ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \
 421           && __underflow (_fp) == EOF ? EOF \
 422         : *(unsigned char *) (_fp)->_IO_read_ptr)
 423 #define _IO_putc_unlocked(_ch, _fp) \
 424    (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
 425     ? __overflow (_fp, (unsigned char) (_ch)) \
 426     : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch)))
 427
 428 #define _IO_getwc_unlocked(_fp) \
 429   ((_fp)->_wide_data->_IO_read_ptr >= (_fp)->_wide_data->_IO_read_end \
 430    ? __wuflow (_fp) : (_IO_wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
 431 #define _IO_putwc_unlocked(_wch, _fp) \
 432   ((_fp)->_wide_data->_IO_write_ptr >= (_fp)->_wide_data->_IO_write_end \
 433    ? __woverflow (_fp, _wch) \
 434    : (_IO_wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))
 435
 436 #define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
 437 #define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)
 438
 439 extern int _IO_getc (_IO_FILE *__fp) __THROW;
 440 extern int _IO_putc (int __c, _IO_FILE *__fp) __THROW;
 441 extern int _IO_feof (_IO_FILE *__fp) __THROW;
 442 extern int _IO_ferror (_IO_FILE *__fp) __THROW;
 443
 444 extern int _IO_peekc_locked (_IO_FILE *__fp) __THROW;
 445
 446 /* This one is for Emacs. */
 447 #define _IO_PENDING_OUTPUT_COUNT(_fp)   \
 448         ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)
 449
 450 extern void _IO_flockfile (_IO_FILE *) __THROW;
 451 extern void _IO_funlockfile (_IO_FILE *) __THROW;
 452 extern int _IO_ftrylockfile (_IO_FILE *) __THROW;
 453
 454 #ifdef _IO_MTSAFE_IO
 455 # define _IO_peekc(_fp) _IO_peekc_locked (_fp)
 456 # define _IO_flockfile(_fp) \
 457   if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_flockfile (_fp)
 458 # define _IO_funlockfile(_fp) \
 459   if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_funlockfile (_fp)
 460 #else
 461 # define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
 462 # define _IO_flockfile(_fp) /**/
 463 # define _IO_funlockfile(_fp) /**/
 464 # define _IO_ftrylockfile(_fp) /**/
 465 # define _IO_cleanup_region_start(_fct, _fp) /**/
 466 # define _IO_cleanup_region_end(_Doit) /**/
 467 #endif /* !_IO_MTSAFE_IO */
 468
 469 extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
 470                         _IO_va_list, int *__restrict) __THROW;
 471 extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
 472                          _IO_va_list) __THROW;
 473 extern _IO_ssize_t _IO_padn (_IO_FILE *, int, _IO_ssize_t) __THROW;
 474 extern _IO_size_t _IO_sgetn (_IO_FILE *, void *, _IO_size_t) __THROW;
 475
 476 extern _IO_off64_t _IO_seekoff (_IO_FILE *, _IO_off64_t, int, int) __THROW;
 477 extern _IO_off64_t _IO_seekpos (_IO_FILE *, _IO_off64_t, int) __THROW;
 478
 479 extern void _IO_free_backup_area (_IO_FILE *) __THROW;
 480
 481 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
 482 extern _IO_wint_t _IO_getwc (_IO_FILE *__fp) __THROW;
 483 extern _IO_wint_t _IO_putwc (wchar_t __wc, _IO_FILE *__fp) __THROW;
 484 extern int _IO_fwide (_IO_FILE *__fp, int __mode) __THROW;
 485 # if __GNUC__ >= 2
 486 /* While compiling glibc we have to handle compatibility with very old
 487    versions.  */
 488 #  if defined _LIBC && defined SHARED
 489 #   include <shlib-compat.h>
 490 #   if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
 491 #    define _IO_fwide_maybe_incompatible \
 492   (__builtin_expect (&_IO_stdin_used == NULL, 0))
 493 extern const int _IO_stdin_used;
 494 weak_extern (_IO_stdin_used);
 495 #   endif
 496 #  endif
 497 #  ifndef _IO_fwide_maybe_incompatible
 498 #   define _IO_fwide_maybe_incompatible (0)
 499 #  endif
 500 /* A special optimized version of the function above.  It optimizes the
 501    case of initializing an unoriented byte stream.  */
 502 #  define _IO_fwide(__fp, __mode) \
 503   ({ int __result = (__mode);                                                 \
 504      if (__result < 0 && ! _IO_fwide_maybe_incompatible)                      \
 505        {                                                                      \
 506          if ((__fp)->_mode == 0)                                              \
 507            /* We know that all we have to do is to set the flag.  */          \
 508            (__fp)->_mode = -1;                                                \
 509          __result = (__fp)->_mode;                                            \
 510        }                                                                      \
 511      else if (__builtin_constant_p (__mode) && (__mode) == 0)                 \
 512        __result = (__fp)->_mode;                                              \
 513      else                                                                     \
 514        __result = _IO_fwide (__fp, __result);                                 \
 515      __result; })
 516 # endif
 517
 518 extern int _IO_vfwscanf (_IO_FILE * __restrict, const wchar_t * __restrict,
 519                          _IO_va_list, int *__restrict) __THROW;
 520 extern int _IO_vfwprintf (_IO_FILE *__restrict, const wchar_t *__restrict,
 521                           _IO_va_list) __THROW;
 522 extern _IO_ssize_t _IO_wpadn (_IO_FILE *, wint_t, _IO_ssize_t) __THROW;
 523 extern void _IO_free_wbackup_area (_IO_FILE *) __THROW;
 524 #endif
 525
 526 #ifdef __cplusplus
 527 }
 528 #endif
 529
 530 #endif /* _IO_STDIO_H */