lib/stdio.in.h

   1 /* A GNU-like <stdio.h>.
   2
   3    Copyright (C) 2004, 2007-2013 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3, or (at your option)
   8    any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #if __GNUC__ >= 3
  19 @PRAGMA_SYSTEM_HEADER@
  20 #endif
  21 @PRAGMA_COLUMNS@
  22
  23 #if defined __need_FILE || defined __need___FILE || defined _GL_ALREADY_INCLUDING_STDIO_H
  24 /* Special invocation convention:
  25    - Inside glibc header files.
  26    - On OSF/1 5.1 we have a sequence of nested includes
  27      <stdio.h> -> <getopt.h> -> <ctype.h> -> <sys/localedef.h> ->
  28      <sys/lc_core.h> -> <nl_types.h> -> <mesg.h> -> <stdio.h>.
  29      In this situation, the functions are not yet declared, therefore we cannot
  30      provide the C++ aliases.  */
  31
  32 #@INCLUDE_NEXT@ @NEXT_STDIO_H@
  33
  34 #else
  35 /* Normal invocation convention.  */
  36
  37 #ifndef _@GUARD_PREFIX@_STDIO_H
  38
  39 #define _GL_ALREADY_INCLUDING_STDIO_H
  40
  41 /* The include_next requires a split double-inclusion guard.  */
  42 #@INCLUDE_NEXT@ @NEXT_STDIO_H@
  43
  44 #undef _GL_ALREADY_INCLUDING_STDIO_H
  45
  46 #ifndef _@GUARD_PREFIX@_STDIO_H
  47 #define _@GUARD_PREFIX@_STDIO_H
  48
  49 /* Get va_list.  Needed on many systems, including glibc 2.8.  */
  50 #include <stdarg.h>
  51
  52 #include <stddef.h>
  53
  54 /* Get off_t and ssize_t.  Needed on many systems, including glibc 2.8
  55    and eglibc 2.11.2.
  56    May also define off_t to a 64-bit type on native Windows.  */
  57 #include <sys/types.h>
  58
  59 /* The __attribute__ feature is available in gcc versions 2.5 and later.
  60    The __-protected variants of the attributes 'format' and 'printf' are
  61    accepted by gcc versions 2.6.4 (effectively 2.7) and later.
  62    We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
  63    gnulib and libintl do '#define printf __printf__' when they override
  64    the 'printf' function.  */
  65 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  66 # define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
  67 #else
  68 # define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
  69 #endif
  70
  71 /* _GL_ATTRIBUTE_FORMAT_PRINTF
  72    indicates to GCC that the function takes a format string and arguments,
  73    where the format string directives are the ones standardized by ISO C99
  74    and POSIX.  */
  75 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
  76 # define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
  77    _GL_ATTRIBUTE_FORMAT ((__gnu_printf__, formatstring_parameter, first_argument))
  78 #else
  79 # define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
  80    _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
  81 #endif
  82
  83 /* _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_PRINTF,
  84    except that it indicates to GCC that the supported format string directives
  85    are the ones of the system printf(), rather than the ones standardized by
  86    ISO C99 and POSIX.  */
  87 #define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \
  88   _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
  89
  90 /* _GL_ATTRIBUTE_FORMAT_SCANF
  91    indicates to GCC that the function takes a format string and arguments,
  92    where the format string directives are the ones standardized by ISO C99
  93    and POSIX.  */
  94 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
  95 # define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
  96    _GL_ATTRIBUTE_FORMAT ((__gnu_scanf__, formatstring_parameter, first_argument))
  97 #else
  98 # define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
  99    _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
 100 #endif
 101
 102 /* _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_SCANF,
 103    except that it indicates to GCC that the supported format string directives
 104    are the ones of the system scanf(), rather than the ones standardized by
 105    ISO C99 and POSIX.  */
 106 #define _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM(formatstring_parameter, first_argument) \
 107   _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
 108
 109 /* Solaris 10 declares renameat in <unistd.h>, not in <stdio.h>.  */
 110 /* But in any case avoid namespace pollution on glibc systems.  */
 111 #if (@GNULIB_RENAMEAT@ || defined GNULIB_POSIXCHECK) && defined __sun \
 112     && ! defined __GLIBC__
 113 # include <unistd.h>
 114 #endif
 115
 116
 117 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 118
 119 /* The definition of _GL_ARG_NONNULL is copied here.  */
 120
 121 /* The definition of _GL_WARN_ON_USE is copied here.  */
 122
 123 /* Macros for stringification.  */
 124 #define _GL_STDIO_STRINGIZE(token) #token
 125 #define _GL_STDIO_MACROEXPAND_AND_STRINGIZE(token) _GL_STDIO_STRINGIZE(token)
 126
 127
 128 #if @GNULIB_DPRINTF@
 129 # if @REPLACE_DPRINTF@
 130 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 131 #   define dprintf rpl_dprintf
 132 #  endif
 133 _GL_FUNCDECL_RPL (dprintf, int, (int fd, const char *format, ...)
 134                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 135                                 _GL_ARG_NONNULL ((2)));
 136 _GL_CXXALIAS_RPL (dprintf, int, (int fd, const char *format, ...));
 137 # else
 138 #  if !@HAVE_DPRINTF@
 139 _GL_FUNCDECL_SYS (dprintf, int, (int fd, const char *format, ...)
 140                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 141                                 _GL_ARG_NONNULL ((2)));
 142 #  endif
 143 _GL_CXXALIAS_SYS (dprintf, int, (int fd, const char *format, ...));
 144 # endif
 145 _GL_CXXALIASWARN (dprintf);
 146 #elif defined GNULIB_POSIXCHECK
 147 # undef dprintf
 148 # if HAVE_RAW_DECL_DPRINTF
 149 _GL_WARN_ON_USE (dprintf, "dprintf is unportable - "
 150                  "use gnulib module dprintf for portability");
 151 # endif
 152 #endif
 153
 154 #if @GNULIB_FCLOSE@
 155 /* Close STREAM and its underlying file descriptor.  */
 156 # if @REPLACE_FCLOSE@
 157 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 158 #   define fclose rpl_fclose
 159 #  endif
 160 _GL_FUNCDECL_RPL (fclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 161 _GL_CXXALIAS_RPL (fclose, int, (FILE *stream));
 162 # else
 163 _GL_CXXALIAS_SYS (fclose, int, (FILE *stream));
 164 # endif
 165 _GL_CXXALIASWARN (fclose);
 166 #elif defined GNULIB_POSIXCHECK
 167 # undef fclose
 168 /* Assume fclose is always declared.  */
 169 _GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - "
 170                  "use gnulib module fclose for portable POSIX compliance");
 171 #endif
 172
 173 #if @GNULIB_FDOPEN@
 174 # if @REPLACE_FDOPEN@
 175 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 176 #   undef fdopen
 177 #   define fdopen rpl_fdopen
 178 #  endif
 179 _GL_FUNCDECL_RPL (fdopen, FILE *, (int fd, const char *mode)
 180                                   _GL_ARG_NONNULL ((2)));
 181 _GL_CXXALIAS_RPL (fdopen, FILE *, (int fd, const char *mode));
 182 # else
 183 _GL_CXXALIAS_SYS (fdopen, FILE *, (int fd, const char *mode));
 184 # endif
 185 _GL_CXXALIASWARN (fdopen);
 186 #elif defined GNULIB_POSIXCHECK
 187 # undef fdopen
 188 /* Assume fdopen is always declared.  */
 189 _GL_WARN_ON_USE (fdopen, "fdopen on native Windows platforms is not POSIX compliant - "
 190                  "use gnulib module fdopen for portability");
 191 #endif
 192
 193 #if @GNULIB_FFLUSH@
 194 /* Flush all pending data on STREAM according to POSIX rules.  Both
 195    output and seekable input streams are supported.
 196    Note! LOSS OF DATA can occur if fflush is applied on an input stream
 197    that is _not_seekable_ or on an update stream that is _not_seekable_
 198    and in which the most recent operation was input.  Seekability can
 199    be tested with lseek(fileno(fp),0,SEEK_CUR).  */
 200 # if @REPLACE_FFLUSH@
 201 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 202 #   define fflush rpl_fflush
 203 #  endif
 204 _GL_FUNCDECL_RPL (fflush, int, (FILE *gl_stream));
 205 _GL_CXXALIAS_RPL (fflush, int, (FILE *gl_stream));
 206 # else
 207 _GL_CXXALIAS_SYS (fflush, int, (FILE *gl_stream));
 208 # endif
 209 _GL_CXXALIASWARN (fflush);
 210 #elif defined GNULIB_POSIXCHECK
 211 # undef fflush
 212 /* Assume fflush is always declared.  */
 213 _GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
 214                  "use gnulib module fflush for portable POSIX compliance");
 215 #endif
 216
 217 #if @GNULIB_FGETC@
 218 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 219 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 220 #   undef fgetc
 221 #   define fgetc rpl_fgetc
 222 #  endif
 223 _GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 224 _GL_CXXALIAS_RPL (fgetc, int, (FILE *stream));
 225 # else
 226 _GL_CXXALIAS_SYS (fgetc, int, (FILE *stream));
 227 # endif
 228 _GL_CXXALIASWARN (fgetc);
 229 #endif
 230
 231 #if @GNULIB_FGETS@
 232 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 233 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 234 #   undef fgets
 235 #   define fgets rpl_fgets
 236 #  endif
 237 _GL_FUNCDECL_RPL (fgets, char *, (char *s, int n, FILE *stream)
 238                                  _GL_ARG_NONNULL ((1, 3)));
 239 _GL_CXXALIAS_RPL (fgets, char *, (char *s, int n, FILE *stream));
 240 # else
 241 _GL_CXXALIAS_SYS (fgets, char *, (char *s, int n, FILE *stream));
 242 # endif
 243 _GL_CXXALIASWARN (fgets);
 244 #endif
 245
 246 #if @GNULIB_FOPEN@
 247 # if @REPLACE_FOPEN@
 248 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 249 #   undef fopen
 250 #   define fopen rpl_fopen
 251 #  endif
 252 _GL_FUNCDECL_RPL (fopen, FILE *, (const char *filename, const char *mode)
 253                                  _GL_ARG_NONNULL ((1, 2)));
 254 _GL_CXXALIAS_RPL (fopen, FILE *, (const char *filename, const char *mode));
 255 # else
 256 _GL_CXXALIAS_SYS (fopen, FILE *, (const char *filename, const char *mode));
 257 # endif
 258 _GL_CXXALIASWARN (fopen);
 259 #elif defined GNULIB_POSIXCHECK
 260 # undef fopen
 261 /* Assume fopen is always declared.  */
 262 _GL_WARN_ON_USE (fopen, "fopen on native Windows platforms is not POSIX compliant - "
 263                  "use gnulib module fopen for portability");
 264 #endif
 265
 266 #if @GNULIB_FPRINTF_POSIX@ || @GNULIB_FPRINTF@
 267 # if (@GNULIB_FPRINTF_POSIX@ && @REPLACE_FPRINTF@) \
 268      || (@GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 269 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 270 #   define fprintf rpl_fprintf
 271 #  endif
 272 #  define GNULIB_overrides_fprintf 1
 273 #  if @GNULIB_FPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 274 _GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
 275                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 276                                 _GL_ARG_NONNULL ((1, 2)));
 277 #  else
 278 _GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
 279                                 _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 3)
 280                                 _GL_ARG_NONNULL ((1, 2)));
 281 #  endif
 282 _GL_CXXALIAS_RPL (fprintf, int, (FILE *fp, const char *format, ...));
 283 # else
 284 _GL_CXXALIAS_SYS (fprintf, int, (FILE *fp, const char *format, ...));
 285 # endif
 286 _GL_CXXALIASWARN (fprintf);
 287 #endif
 288 #if !@GNULIB_FPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
 289 # if !GNULIB_overrides_fprintf
 290 #  undef fprintf
 291 # endif
 292 /* Assume fprintf is always declared.  */
 293 _GL_WARN_ON_USE (fprintf, "fprintf is not always POSIX compliant - "
 294                  "use gnulib module fprintf-posix for portable "
 295                  "POSIX compliance");
 296 #endif
 297
 298 #if @GNULIB_FPURGE@
 299 /* Discard all pending buffered I/O data on STREAM.
 300    STREAM must not be wide-character oriented.
 301    When discarding pending output, the file position is set back to where it
 302    was before the write calls.  When discarding pending input, the file
 303    position is advanced to match the end of the previously read input.
 304    Return 0 if successful.  Upon error, return -1 and set errno.  */
 305 # if @REPLACE_FPURGE@
 306 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 307 #   define fpurge rpl_fpurge
 308 #  endif
 309 _GL_FUNCDECL_RPL (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
 310 _GL_CXXALIAS_RPL (fpurge, int, (FILE *gl_stream));
 311 # else
 312 #  if !@HAVE_DECL_FPURGE@
 313 _GL_FUNCDECL_SYS (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
 314 #  endif
 315 _GL_CXXALIAS_SYS (fpurge, int, (FILE *gl_stream));
 316 # endif
 317 _GL_CXXALIASWARN (fpurge);
 318 #elif defined GNULIB_POSIXCHECK
 319 # undef fpurge
 320 # if HAVE_RAW_DECL_FPURGE
 321 _GL_WARN_ON_USE (fpurge, "fpurge is not always present - "
 322                  "use gnulib module fpurge for portability");
 323 # endif
 324 #endif
 325
 326 #if @GNULIB_FPUTC@
 327 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 328 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 329 #   undef fputc
 330 #   define fputc rpl_fputc
 331 #  endif
 332 _GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
 333 _GL_CXXALIAS_RPL (fputc, int, (int c, FILE *stream));
 334 # else
 335 _GL_CXXALIAS_SYS (fputc, int, (int c, FILE *stream));
 336 # endif
 337 _GL_CXXALIASWARN (fputc);
 338 #endif
 339
 340 #if @GNULIB_FPUTS@
 341 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 342 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 343 #   undef fputs
 344 #   define fputs rpl_fputs
 345 #  endif
 346 _GL_FUNCDECL_RPL (fputs, int, (const char *string, FILE *stream)
 347                               _GL_ARG_NONNULL ((1, 2)));
 348 _GL_CXXALIAS_RPL (fputs, int, (const char *string, FILE *stream));
 349 # else
 350 _GL_CXXALIAS_SYS (fputs, int, (const char *string, FILE *stream));
 351 # endif
 352 _GL_CXXALIASWARN (fputs);
 353 #endif
 354
 355 #if @GNULIB_FREAD@
 356 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 357 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 358 #   undef fread
 359 #   define fread rpl_fread
 360 #  endif
 361 _GL_FUNCDECL_RPL (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream)
 362                                  _GL_ARG_NONNULL ((4)));
 363 _GL_CXXALIAS_RPL (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream));
 364 # else
 365 _GL_CXXALIAS_SYS (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream));
 366 # endif
 367 _GL_CXXALIASWARN (fread);
 368 #endif
 369
 370 #if @GNULIB_FREOPEN@
 371 # if @REPLACE_FREOPEN@
 372 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 373 #   undef freopen
 374 #   define freopen rpl_freopen
 375 #  endif
 376 _GL_FUNCDECL_RPL (freopen, FILE *,
 377                   (const char *filename, const char *mode, FILE *stream)
 378                   _GL_ARG_NONNULL ((2, 3)));
 379 _GL_CXXALIAS_RPL (freopen, FILE *,
 380                   (const char *filename, const char *mode, FILE *stream));
 381 # else
 382 _GL_CXXALIAS_SYS (freopen, FILE *,
 383                   (const char *filename, const char *mode, FILE *stream));
 384 # endif
 385 _GL_CXXALIASWARN (freopen);
 386 #elif defined GNULIB_POSIXCHECK
 387 # undef freopen
 388 /* Assume freopen is always declared.  */
 389 _GL_WARN_ON_USE (freopen,
 390                  "freopen on native Windows platforms is not POSIX compliant - "
 391                  "use gnulib module freopen for portability");
 392 #endif
 393
 394 #if @GNULIB_FSCANF@
 395 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 396 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 397 #   undef fscanf
 398 #   define fscanf rpl_fscanf
 399 #  endif
 400 _GL_FUNCDECL_RPL (fscanf, int, (FILE *stream, const char *format, ...)
 401                                _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 3)
 402                                _GL_ARG_NONNULL ((1, 2)));
 403 _GL_CXXALIAS_RPL (fscanf, int, (FILE *stream, const char *format, ...));
 404 # else
 405 _GL_CXXALIAS_SYS (fscanf, int, (FILE *stream, const char *format, ...));
 406 # endif
 407 _GL_CXXALIASWARN (fscanf);
 408 #endif
 409
 410
 411 /* Set up the following warnings, based on which modules are in use.
 412    GNU Coding Standards discourage the use of fseek, since it imposes
 413    an arbitrary limitation on some 32-bit hosts.  Remember that the
 414    fseek module depends on the fseeko module, so we only have three
 415    cases to consider:
 416
 417    1. The developer is not using either module.  Issue a warning under
 418    GNULIB_POSIXCHECK for both functions, to remind them that both
 419    functions have bugs on some systems.  _GL_NO_LARGE_FILES has no
 420    impact on this warning.
 421
 422    2. The developer is using both modules.  They may be unaware of the
 423    arbitrary limitations of fseek, so issue a warning under
 424    GNULIB_POSIXCHECK.  On the other hand, they may be using both
 425    modules intentionally, so the developer can define
 426    _GL_NO_LARGE_FILES in the compilation units where the use of fseek
 427    is safe, to silence the warning.
 428
 429    3. The developer is using the fseeko module, but not fseek.  Gnulib
 430    guarantees that fseek will still work around platform bugs in that
 431    case, but we presume that the developer is aware of the pitfalls of
 432    fseek and was trying to avoid it, so issue a warning even when
 433    GNULIB_POSIXCHECK is undefined.  Again, _GL_NO_LARGE_FILES can be
 434    defined to silence the warning in particular compilation units.
 435    In C++ compilations with GNULIB_NAMESPACE, in order to avoid that
 436    fseek gets defined as a macro, it is recommended that the developer
 437    uses the fseek module, even if he is not calling the fseek function.
 438
 439    Most gnulib clients that perform stream operations should fall into
 440    category 3.  */
 441
 442 #if @GNULIB_FSEEK@
 443 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
 444 #  define _GL_FSEEK_WARN /* Category 2, above.  */
 445 #  undef fseek
 446 # endif
 447 # if @REPLACE_FSEEK@
 448 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 449 #   undef fseek
 450 #   define fseek rpl_fseek
 451 #  endif
 452 _GL_FUNCDECL_RPL (fseek, int, (FILE *fp, long offset, int whence)
 453                               _GL_ARG_NONNULL ((1)));
 454 _GL_CXXALIAS_RPL (fseek, int, (FILE *fp, long offset, int whence));
 455 # else
 456 _GL_CXXALIAS_SYS (fseek, int, (FILE *fp, long offset, int whence));
 457 # endif
 458 _GL_CXXALIASWARN (fseek);
 459 #endif
 460
 461 #if @GNULIB_FSEEKO@
 462 # if !@GNULIB_FSEEK@ && !defined _GL_NO_LARGE_FILES
 463 #  define _GL_FSEEK_WARN /* Category 3, above.  */
 464 #  undef fseek
 465 # endif
 466 # if @REPLACE_FSEEKO@
 467 /* Provide an fseeko function that is aware of a preceding fflush(), and which
 468    detects pipes.  */
 469 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 470 #   undef fseeko
 471 #   define fseeko rpl_fseeko
 472 #  endif
 473 _GL_FUNCDECL_RPL (fseeko, int, (FILE *fp, off_t offset, int whence)
 474                                _GL_ARG_NONNULL ((1)));
 475 _GL_CXXALIAS_RPL (fseeko, int, (FILE *fp, off_t offset, int whence));
 476 # else
 477 #  if ! @HAVE_DECL_FSEEKO@
 478 _GL_FUNCDECL_SYS (fseeko, int, (FILE *fp, off_t offset, int whence)
 479                                _GL_ARG_NONNULL ((1)));
 480 #  endif
 481 _GL_CXXALIAS_SYS (fseeko, int, (FILE *fp, off_t offset, int whence));
 482 # endif
 483 _GL_CXXALIASWARN (fseeko);
 484 #elif defined GNULIB_POSIXCHECK
 485 # define _GL_FSEEK_WARN /* Category 1, above.  */
 486 # undef fseek
 487 # undef fseeko
 488 # if HAVE_RAW_DECL_FSEEKO
 489 _GL_WARN_ON_USE (fseeko, "fseeko is unportable - "
 490                  "use gnulib module fseeko for portability");
 491 # endif
 492 #endif
 493
 494 #ifdef _GL_FSEEK_WARN
 495 # undef _GL_FSEEK_WARN
 496 /* Here, either fseek is undefined (but C89 guarantees that it is
 497    declared), or it is defined as rpl_fseek (declared above).  */
 498 _GL_WARN_ON_USE (fseek, "fseek cannot handle files larger than 4 GB "
 499                  "on 32-bit platforms - "
 500                  "use fseeko function for handling of large files");
 501 #endif
 502
 503
 504 /* ftell, ftello.  See the comments on fseek/fseeko.  */
 505
 506 #if @GNULIB_FTELL@
 507 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
 508 #  define _GL_FTELL_WARN /* Category 2, above.  */
 509 #  undef ftell
 510 # endif
 511 # if @REPLACE_FTELL@
 512 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 513 #   undef ftell
 514 #   define ftell rpl_ftell
 515 #  endif
 516 _GL_FUNCDECL_RPL (ftell, long, (FILE *fp) _GL_ARG_NONNULL ((1)));
 517 _GL_CXXALIAS_RPL (ftell, long, (FILE *fp));
 518 # else
 519 _GL_CXXALIAS_SYS (ftell, long, (FILE *fp));
 520 # endif
 521 _GL_CXXALIASWARN (ftell);
 522 #endif
 523
 524 #if @GNULIB_FTELLO@
 525 # if !@GNULIB_FTELL@ && !defined _GL_NO_LARGE_FILES
 526 #  define _GL_FTELL_WARN /* Category 3, above.  */
 527 #  undef ftell
 528 # endif
 529 # if @REPLACE_FTELLO@
 530 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 531 #   undef ftello
 532 #   define ftello rpl_ftello
 533 #  endif
 534 _GL_FUNCDECL_RPL (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
 535 _GL_CXXALIAS_RPL (ftello, off_t, (FILE *fp));
 536 # else
 537 #  if ! @HAVE_DECL_FTELLO@
 538 _GL_FUNCDECL_SYS (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
 539 #  endif
 540 _GL_CXXALIAS_SYS (ftello, off_t, (FILE *fp));
 541 # endif
 542 _GL_CXXALIASWARN (ftello);
 543 #elif defined GNULIB_POSIXCHECK
 544 # define _GL_FTELL_WARN /* Category 1, above.  */
 545 # undef ftell
 546 # undef ftello
 547 # if HAVE_RAW_DECL_FTELLO
 548 _GL_WARN_ON_USE (ftello, "ftello is unportable - "
 549                  "use gnulib module ftello for portability");
 550 # endif
 551 #endif
 552
 553 #ifdef _GL_FTELL_WARN
 554 # undef _GL_FTELL_WARN
 555 /* Here, either ftell is undefined (but C89 guarantees that it is
 556    declared), or it is defined as rpl_ftell (declared above).  */
 557 _GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
 558                  "on 32-bit platforms - "
 559                  "use ftello function for handling of large files");
 560 #endif
 561
 562
 563 #if @GNULIB_FWRITE@
 564 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 565 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 566 #   undef fwrite
 567 #   define fwrite rpl_fwrite
 568 #  endif
 569 _GL_FUNCDECL_RPL (fwrite, size_t,
 570                   (const void *ptr, size_t s, size_t n, FILE *stream)
 571                   _GL_ARG_NONNULL ((1, 4)));
 572 _GL_CXXALIAS_RPL (fwrite, size_t,
 573                   (const void *ptr, size_t s, size_t n, FILE *stream));
 574 # else
 575 _GL_CXXALIAS_SYS (fwrite, size_t,
 576                   (const void *ptr, size_t s, size_t n, FILE *stream));
 577
 578 /* Work around bug 11959 when fortifying glibc 2.4 through 2.15
 579    <http://sources.redhat.com/bugzilla/show_bug.cgi?id=11959>,
 580    which sometimes causes an unwanted diagnostic for fwrite calls.
 581    This affects only function declaration attributes under certain
 582    versions of gcc and clang, and is not needed for C++.  */
 583 #  if (0 < __USE_FORTIFY_LEVEL                                          \
 584        && __GLIBC__ == 2 && 4 <= __GLIBC_MINOR__ && __GLIBC_MINOR__ <= 15 \
 585        && 3 < __GNUC__ + (4 <= __GNUC_MINOR__)                          \
 586        && !defined __cplusplus)
 587 #   undef fwrite
 588 #   undef fwrite_unlocked
 589 extern size_t __REDIRECT (rpl_fwrite,
 590                           (const void *__restrict, size_t, size_t,
 591                            FILE *__restrict),
 592                           fwrite);
 593 extern size_t __REDIRECT (rpl_fwrite_unlocked,
 594                           (const void *__restrict, size_t, size_t,
 595                            FILE *__restrict),
 596                           fwrite_unlocked);
 597 #   define fwrite rpl_fwrite
 598 #   define fwrite_unlocked rpl_fwrite_unlocked
 599 #  endif
 600 # endif
 601 _GL_CXXALIASWARN (fwrite);
 602 #endif
 603
 604 #if @GNULIB_GETC@
 605 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 606 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 607 #   undef getc
 608 #   define getc rpl_fgetc
 609 #  endif
 610 _GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 611 _GL_CXXALIAS_RPL_1 (getc, rpl_fgetc, int, (FILE *stream));
 612 # else
 613 _GL_CXXALIAS_SYS (getc, int, (FILE *stream));
 614 # endif
 615 _GL_CXXALIASWARN (getc);
 616 #endif
 617
 618 #if @GNULIB_GETCHAR@
 619 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 620 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 621 #   undef getchar
 622 #   define getchar rpl_getchar
 623 #  endif
 624 _GL_FUNCDECL_RPL (getchar, int, (void));
 625 _GL_CXXALIAS_RPL (getchar, int, (void));
 626 # else
 627 _GL_CXXALIAS_SYS (getchar, int, (void));
 628 # endif
 629 _GL_CXXALIASWARN (getchar);
 630 #endif
 631
 632 #if @GNULIB_GETDELIM@
 633 /* Read input, up to (and including) the next occurrence of DELIMITER, from
 634    STREAM, store it in *LINEPTR (and NUL-terminate it).
 635    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
 636    bytes of space.  It is realloc'd as necessary.
 637    Return the number of bytes read and stored at *LINEPTR (not including the
 638    NUL terminator), or -1 on error or EOF.  */
 639 # if @REPLACE_GETDELIM@
 640 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 641 #   undef getdelim
 642 #   define getdelim rpl_getdelim
 643 #  endif
 644 _GL_FUNCDECL_RPL (getdelim, ssize_t,
 645                   (char **lineptr, size_t *linesize, int delimiter,
 646                    FILE *stream)
 647                   _GL_ARG_NONNULL ((1, 2, 4)));
 648 _GL_CXXALIAS_RPL (getdelim, ssize_t,
 649                   (char **lineptr, size_t *linesize, int delimiter,
 650                    FILE *stream));
 651 # else
 652 #  if !@HAVE_DECL_GETDELIM@
 653 _GL_FUNCDECL_SYS (getdelim, ssize_t,
 654                   (char **lineptr, size_t *linesize, int delimiter,
 655                    FILE *stream)
 656                   _GL_ARG_NONNULL ((1, 2, 4)));
 657 #  endif
 658 _GL_CXXALIAS_SYS (getdelim, ssize_t,
 659                   (char **lineptr, size_t *linesize, int delimiter,
 660                    FILE *stream));
 661 # endif
 662 _GL_CXXALIASWARN (getdelim);
 663 #elif defined GNULIB_POSIXCHECK
 664 # undef getdelim
 665 # if HAVE_RAW_DECL_GETDELIM
 666 _GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
 667                  "use gnulib module getdelim for portability");
 668 # endif
 669 #endif
 670
 671 #if @GNULIB_GETLINE@
 672 /* Read a line, up to (and including) the next newline, from STREAM, store it
 673    in *LINEPTR (and NUL-terminate it).
 674    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
 675    bytes of space.  It is realloc'd as necessary.
 676    Return the number of bytes read and stored at *LINEPTR (not including the
 677    NUL terminator), or -1 on error or EOF.  */
 678 # if @REPLACE_GETLINE@
 679 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 680 #   undef getline
 681 #   define getline rpl_getline
 682 #  endif
 683 _GL_FUNCDECL_RPL (getline, ssize_t,
 684                   (char **lineptr, size_t *linesize, FILE *stream)
 685                   _GL_ARG_NONNULL ((1, 2, 3)));
 686 _GL_CXXALIAS_RPL (getline, ssize_t,
 687                   (char **lineptr, size_t *linesize, FILE *stream));
 688 # else
 689 #  if !@HAVE_DECL_GETLINE@
 690 _GL_FUNCDECL_SYS (getline, ssize_t,
 691                   (char **lineptr, size_t *linesize, FILE *stream)
 692                   _GL_ARG_NONNULL ((1, 2, 3)));
 693 #  endif
 694 _GL_CXXALIAS_SYS (getline, ssize_t,
 695                   (char **lineptr, size_t *linesize, FILE *stream));
 696 # endif
 697 # if @HAVE_DECL_GETLINE@
 698 _GL_CXXALIASWARN (getline);
 699 # endif
 700 #elif defined GNULIB_POSIXCHECK
 701 # undef getline
 702 # if HAVE_RAW_DECL_GETLINE
 703 _GL_WARN_ON_USE (getline, "getline is unportable - "
 704                  "use gnulib module getline for portability");
 705 # endif
 706 #endif
 707
 708 /* It is very rare that the developer ever has full control of stdin,
 709    so any use of gets warrants an unconditional warning; besides, C11
 710    removed it.  */
 711 #undef gets
 712 #if HAVE_RAW_DECL_GETS
 713 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
 714 #endif
 715
 716
 717 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
 718 struct obstack;
 719 /* Grow an obstack with formatted output.  Return the number of
 720    bytes added to OBS.  No trailing nul byte is added, and the
 721    object should be closed with obstack_finish before use.  Upon
 722    memory allocation error, call obstack_alloc_failed_handler.  Upon
 723    other error, return -1.  */
 724 # if @REPLACE_OBSTACK_PRINTF@
 725 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 726 #   define obstack_printf rpl_obstack_printf
 727 #  endif
 728 _GL_FUNCDECL_RPL (obstack_printf, int,
 729                   (struct obstack *obs, const char *format, ...)
 730                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 731                   _GL_ARG_NONNULL ((1, 2)));
 732 _GL_CXXALIAS_RPL (obstack_printf, int,
 733                   (struct obstack *obs, const char *format, ...));
 734 # else
 735 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 736 _GL_FUNCDECL_SYS (obstack_printf, int,
 737                   (struct obstack *obs, const char *format, ...)
 738                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 739                   _GL_ARG_NONNULL ((1, 2)));
 740 #  endif
 741 _GL_CXXALIAS_SYS (obstack_printf, int,
 742                   (struct obstack *obs, const char *format, ...));
 743 # endif
 744 _GL_CXXALIASWARN (obstack_printf);
 745 # if @REPLACE_OBSTACK_PRINTF@
 746 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 747 #   define obstack_vprintf rpl_obstack_vprintf
 748 #  endif
 749 _GL_FUNCDECL_RPL (obstack_vprintf, int,
 750                   (struct obstack *obs, const char *format, va_list args)
 751                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
 752                   _GL_ARG_NONNULL ((1, 2)));
 753 _GL_CXXALIAS_RPL (obstack_vprintf, int,
 754                   (struct obstack *obs, const char *format, va_list args));
 755 # else
 756 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 757 _GL_FUNCDECL_SYS (obstack_vprintf, int,
 758                   (struct obstack *obs, const char *format, va_list args)
 759                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
 760                   _GL_ARG_NONNULL ((1, 2)));
 761 #  endif
 762 _GL_CXXALIAS_SYS (obstack_vprintf, int,
 763                   (struct obstack *obs, const char *format, va_list args));
 764 # endif
 765 _GL_CXXALIASWARN (obstack_vprintf);
 766 #endif
 767
 768 #if @GNULIB_PCLOSE@
 769 # if !@HAVE_PCLOSE@
 770 _GL_FUNCDECL_SYS (pclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 771 # endif
 772 _GL_CXXALIAS_SYS (pclose, int, (FILE *stream));
 773 _GL_CXXALIASWARN (pclose);
 774 #elif defined GNULIB_POSIXCHECK
 775 # undef pclose
 776 # if HAVE_RAW_DECL_PCLOSE
 777 _GL_WARN_ON_USE (pclose, "pclose is unportable - "
 778                  "use gnulib module pclose for more portability");
 779 # endif
 780 #endif
 781
 782 #if @GNULIB_PERROR@
 783 /* Print a message to standard error, describing the value of ERRNO,
 784    (if STRING is not NULL and not empty) prefixed with STRING and ": ",
 785    and terminated with a newline.  */
 786 # if @REPLACE_PERROR@
 787 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 788 #   define perror rpl_perror
 789 #  endif
 790 _GL_FUNCDECL_RPL (perror, void, (const char *string));
 791 _GL_CXXALIAS_RPL (perror, void, (const char *string));
 792 # else
 793 _GL_CXXALIAS_SYS (perror, void, (const char *string));
 794 # endif
 795 _GL_CXXALIASWARN (perror);
 796 #elif defined GNULIB_POSIXCHECK
 797 # undef perror
 798 /* Assume perror is always declared.  */
 799 _GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
 800                  "use gnulib module perror for portability");
 801 #endif
 802
 803 #if @GNULIB_POPEN@
 804 # if @REPLACE_POPEN@
 805 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 806 #   undef popen
 807 #   define popen rpl_popen
 808 #  endif
 809 _GL_FUNCDECL_RPL (popen, FILE *, (const char *cmd, const char *mode)
 810                                  _GL_ARG_NONNULL ((1, 2)));
 811 _GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode));
 812 # else
 813 #  if !@HAVE_POPEN@
 814 _GL_FUNCDECL_SYS (popen, FILE *, (const char *cmd, const char *mode)
 815                                  _GL_ARG_NONNULL ((1, 2)));
 816 #  endif
 817 _GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode));
 818 # endif
 819 _GL_CXXALIASWARN (popen);
 820 #elif defined GNULIB_POSIXCHECK
 821 # undef popen
 822 # if HAVE_RAW_DECL_POPEN
 823 _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
 824                  "use gnulib module popen or pipe for more portability");
 825 # endif
 826 #endif
 827
 828 #if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
 829 # if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
 830      || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 831 #  if defined __GNUC__
 832 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 833 /* Don't break __attribute__((format(printf,M,N))).  */
 834 #    define printf __printf__
 835 #   endif
 836 #   if @GNULIB_PRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 837 _GL_FUNCDECL_RPL_1 (__printf__, int,
 838                     (const char *format, ...)
 839                     __asm__ (@ASM_SYMBOL_PREFIX@
 840                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
 841                     _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
 842                     _GL_ARG_NONNULL ((1)));
 843 #   else
 844 _GL_FUNCDECL_RPL_1 (__printf__, int,
 845                     (const char *format, ...)
 846                     __asm__ (@ASM_SYMBOL_PREFIX@
 847                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
 848                     _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 2)
 849                     _GL_ARG_NONNULL ((1)));
 850 #   endif
 851 _GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
 852 #  else
 853 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 854 #    define printf rpl_printf
 855 #   endif
 856 _GL_FUNCDECL_RPL (printf, int,
 857                   (const char *format, ...)
 858                   _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
 859                   _GL_ARG_NONNULL ((1)));
 860 _GL_CXXALIAS_RPL (printf, int, (const char *format, ...));
 861 #  endif
 862 #  define GNULIB_overrides_printf 1
 863 # else
 864 _GL_CXXALIAS_SYS (printf, int, (const char *format, ...));
 865 # endif
 866 _GL_CXXALIASWARN (printf);
 867 #endif
 868 #if !@GNULIB_PRINTF_POSIX@ && defined GNULIB_POSIXCHECK
 869 # if !GNULIB_overrides_printf
 870 #  undef printf
 871 # endif
 872 /* Assume printf is always declared.  */
 873 _GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
 874                  "use gnulib module printf-posix for portable "
 875                  "POSIX compliance");
 876 #endif
 877
 878 #if @GNULIB_PUTC@
 879 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 880 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 881 #   undef putc
 882 #   define putc rpl_fputc
 883 #  endif
 884 _GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
 885 _GL_CXXALIAS_RPL_1 (putc, rpl_fputc, int, (int c, FILE *stream));
 886 # else
 887 _GL_CXXALIAS_SYS (putc, int, (int c, FILE *stream));
 888 # endif
 889 _GL_CXXALIASWARN (putc);
 890 #endif
 891
 892 #if @GNULIB_PUTCHAR@
 893 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 894 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 895 #   undef putchar
 896 #   define putchar rpl_putchar
 897 #  endif
 898 _GL_FUNCDECL_RPL (putchar, int, (int c));
 899 _GL_CXXALIAS_RPL (putchar, int, (int c));
 900 # else
 901 _GL_CXXALIAS_SYS (putchar, int, (int c));
 902 # endif
 903 _GL_CXXALIASWARN (putchar);
 904 #endif
 905
 906 #if @GNULIB_PUTS@
 907 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 908 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 909 #   undef puts
 910 #   define puts rpl_puts
 911 #  endif
 912 _GL_FUNCDECL_RPL (puts, int, (const char *string) _GL_ARG_NONNULL ((1)));
 913 _GL_CXXALIAS_RPL (puts, int, (const char *string));
 914 # else
 915 _GL_CXXALIAS_SYS (puts, int, (const char *string));
 916 # endif
 917 _GL_CXXALIASWARN (puts);
 918 #endif
 919
 920 #if @GNULIB_REMOVE@
 921 # if @REPLACE_REMOVE@
 922 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 923 #   undef remove
 924 #   define remove rpl_remove
 925 #  endif
 926 _GL_FUNCDECL_RPL (remove, int, (const char *name) _GL_ARG_NONNULL ((1)));
 927 _GL_CXXALIAS_RPL (remove, int, (const char *name));
 928 # else
 929 _GL_CXXALIAS_SYS (remove, int, (const char *name));
 930 # endif
 931 _GL_CXXALIASWARN (remove);
 932 #elif defined GNULIB_POSIXCHECK
 933 # undef remove
 934 /* Assume remove is always declared.  */
 935 _GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
 936                  "use gnulib module remove for more portability");
 937 #endif
 938
 939 #if @GNULIB_RENAME@
 940 # if @REPLACE_RENAME@
 941 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 942 #   undef rename
 943 #   define rename rpl_rename
 944 #  endif
 945 _GL_FUNCDECL_RPL (rename, int,
 946                   (const char *old_filename, const char *new_filename)
 947                   _GL_ARG_NONNULL ((1, 2)));
 948 _GL_CXXALIAS_RPL (rename, int,
 949                   (const char *old_filename, const char *new_filename));
 950 # else
 951 _GL_CXXALIAS_SYS (rename, int,
 952                   (const char *old_filename, const char *new_filename));
 953 # endif
 954 _GL_CXXALIASWARN (rename);
 955 #elif defined GNULIB_POSIXCHECK
 956 # undef rename
 957 /* Assume rename is always declared.  */
 958 _GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
 959                  "use gnulib module rename for more portability");
 960 #endif
 961
 962 #if @GNULIB_RENAMEAT@
 963 # if @REPLACE_RENAMEAT@
 964 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 965 #   undef renameat
 966 #   define renameat rpl_renameat
 967 #  endif
 968 _GL_FUNCDECL_RPL (renameat, int,
 969                   (int fd1, char const *file1, int fd2, char const *file2)
 970                   _GL_ARG_NONNULL ((2, 4)));
 971 _GL_CXXALIAS_RPL (renameat, int,
 972                   (int fd1, char const *file1, int fd2, char const *file2));
 973 # else
 974 #  if !@HAVE_RENAMEAT@
 975 _GL_FUNCDECL_SYS (renameat, int,
 976                   (int fd1, char const *file1, int fd2, char const *file2)
 977                   _GL_ARG_NONNULL ((2, 4)));
 978 #  endif
 979 _GL_CXXALIAS_SYS (renameat, int,
 980                   (int fd1, char const *file1, int fd2, char const *file2));
 981 # endif
 982 _GL_CXXALIASWARN (renameat);
 983 #elif defined GNULIB_POSIXCHECK
 984 # undef renameat
 985 # if HAVE_RAW_DECL_RENAMEAT
 986 _GL_WARN_ON_USE (renameat, "renameat is not portable - "
 987                  "use gnulib module renameat for portability");
 988 # endif
 989 #endif
 990
 991 #if @GNULIB_SCANF@
 992 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 993 #  if defined __GNUC__
 994 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 995 #    undef scanf
 996 /* Don't break __attribute__((format(scanf,M,N))).  */
 997 #    define scanf __scanf__
 998 #   endif
 999 _GL_FUNCDECL_RPL_1 (__scanf__, int,
1000                     (const char *format, ...)
1001                     __asm__ (@ASM_SYMBOL_PREFIX@
1002                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_scanf))
1003                     _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
1004                     _GL_ARG_NONNULL ((1)));
1005 _GL_CXXALIAS_RPL_1 (scanf, __scanf__, int, (const char *format, ...));
1006 #  else
1007 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1008 #    undef scanf
1009 #    define scanf rpl_scanf
1010 #   endif
1011 _GL_FUNCDECL_RPL (scanf, int, (const char *format, ...)
1012                               _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
1013                               _GL_ARG_NONNULL ((1)));
1014 _GL_CXXALIAS_RPL (scanf, int, (const char *format, ...));
1015 #  endif
1016 # else
1017 _GL_CXXALIAS_SYS (scanf, int, (const char *format, ...));
1018 # endif
1019 _GL_CXXALIASWARN (scanf);
1020 #endif
1021
1022 #if @GNULIB_SNPRINTF@
1023 # if @REPLACE_SNPRINTF@
1024 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1025 #   define snprintf rpl_snprintf
1026 #  endif
1027 _GL_FUNCDECL_RPL (snprintf, int,
1028                   (char *str, size_t size, const char *format, ...)
1029                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
1030                   _GL_ARG_NONNULL ((3)));
1031 _GL_CXXALIAS_RPL (snprintf, int,
1032                   (char *str, size_t size, const char *format, ...));
1033 # else
1034 #  if !@HAVE_DECL_SNPRINTF@
1035 _GL_FUNCDECL_SYS (snprintf, int,
1036                   (char *str, size_t size, const char *format, ...)
1037                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
1038                   _GL_ARG_NONNULL ((3)));
1039 #  endif
1040 _GL_CXXALIAS_SYS (snprintf, int,
1041                   (char *str, size_t size, const char *format, ...));
1042 # endif
1043 _GL_CXXALIASWARN (snprintf);
1044 #elif defined GNULIB_POSIXCHECK
1045 # undef snprintf
1046 # if HAVE_RAW_DECL_SNPRINTF
1047 _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
1048                  "use gnulib module snprintf for portability");
1049 # endif
1050 #endif
1051
1052 /* Some people would argue that all sprintf uses should be warned about
1053    (for example, OpenBSD issues a link warning for it),
1054    since it can cause security holes due to buffer overruns.
1055    However, we believe that sprintf can be used safely, and is more
1056    efficient than snprintf in those safe cases; and as proof of our
1057    belief, we use sprintf in several gnulib modules.  So this header
1058    intentionally avoids adding a warning to sprintf except when
1059    GNULIB_POSIXCHECK is defined.  */
1060
1061 #if @GNULIB_SPRINTF_POSIX@
1062 # if @REPLACE_SPRINTF@
1063 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1064 #   define sprintf rpl_sprintf
1065 #  endif
1066 _GL_FUNCDECL_RPL (sprintf, int, (char *str, const char *format, ...)
1067                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1068                                 _GL_ARG_NONNULL ((1, 2)));
1069 _GL_CXXALIAS_RPL (sprintf, int, (char *str, const char *format, ...));
1070 # else
1071 _GL_CXXALIAS_SYS (sprintf, int, (char *str, const char *format, ...));
1072 # endif
1073 _GL_CXXALIASWARN (sprintf);
1074 #elif defined GNULIB_POSIXCHECK
1075 # undef sprintf
1076 /* Assume sprintf is always declared.  */
1077 _GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
1078                  "use gnulib module sprintf-posix for portable "
1079                  "POSIX compliance");
1080 #endif
1081
1082 #if @GNULIB_TMPFILE@
1083 # if @REPLACE_TMPFILE@
1084 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1085 #   define tmpfile rpl_tmpfile
1086 #  endif
1087 _GL_FUNCDECL_RPL (tmpfile, FILE *, (void));
1088 _GL_CXXALIAS_RPL (tmpfile, FILE *, (void));
1089 # else
1090 _GL_CXXALIAS_SYS (tmpfile, FILE *, (void));
1091 # endif
1092 _GL_CXXALIASWARN (tmpfile);
1093 #elif defined GNULIB_POSIXCHECK
1094 # undef tmpfile
1095 # if HAVE_RAW_DECL_TMPFILE
1096 _GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
1097                  "use gnulib module tmpfile for portability");
1098 # endif
1099 #endif
1100
1101 #if @GNULIB_VASPRINTF@
1102 /* Write formatted output to a string dynamically allocated with malloc().
1103    If the memory allocation succeeds, store the address of the string in
1104    *RESULT and return the number of resulting bytes, excluding the trailing
1105    NUL.  Upon memory allocation error, or some other error, return -1.  */
1106 # if @REPLACE_VASPRINTF@
1107 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1108 #   define asprintf rpl_asprintf
1109 #  endif
1110 _GL_FUNCDECL_RPL (asprintf, int,
1111                   (char **result, const char *format, ...)
1112                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1113                   _GL_ARG_NONNULL ((1, 2)));
1114 _GL_CXXALIAS_RPL (asprintf, int,
1115                   (char **result, const char *format, ...));
1116 # else
1117 #  if !@HAVE_VASPRINTF@
1118 _GL_FUNCDECL_SYS (asprintf, int,
1119                   (char **result, const char *format, ...)
1120                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1121                   _GL_ARG_NONNULL ((1, 2)));
1122 #  endif
1123 _GL_CXXALIAS_SYS (asprintf, int,
1124                   (char **result, const char *format, ...));
1125 # endif
1126 _GL_CXXALIASWARN (asprintf);
1127 # if @REPLACE_VASPRINTF@
1128 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1129 #   define vasprintf rpl_vasprintf
1130 #  endif
1131 _GL_FUNCDECL_RPL (vasprintf, int,
1132                   (char **result, const char *format, va_list args)
1133                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1134                   _GL_ARG_NONNULL ((1, 2)));
1135 _GL_CXXALIAS_RPL (vasprintf, int,
1136                   (char **result, const char *format, va_list args));
1137 # else
1138 #  if !@HAVE_VASPRINTF@
1139 _GL_FUNCDECL_SYS (vasprintf, int,
1140                   (char **result, const char *format, va_list args)
1141                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1142                   _GL_ARG_NONNULL ((1, 2)));
1143 #  endif
1144 _GL_CXXALIAS_SYS (vasprintf, int,
1145                   (char **result, const char *format, va_list args));
1146 # endif
1147 _GL_CXXALIASWARN (vasprintf);
1148 #endif
1149
1150 #if @GNULIB_VDPRINTF@
1151 # if @REPLACE_VDPRINTF@
1152 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1153 #   define vdprintf rpl_vdprintf
1154 #  endif
1155 _GL_FUNCDECL_RPL (vdprintf, int, (int fd, const char *format, va_list args)
1156                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1157                                  _GL_ARG_NONNULL ((2)));
1158 _GL_CXXALIAS_RPL (vdprintf, int, (int fd, const char *format, va_list args));
1159 # else
1160 #  if !@HAVE_VDPRINTF@
1161 _GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
1162                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1163                                  _GL_ARG_NONNULL ((2)));
1164 #  endif
1165 /* Need to cast, because on Solaris, the third parameter will likely be
1166                                                     __va_list args.  */
1167 _GL_CXXALIAS_SYS_CAST (vdprintf, int,
1168                        (int fd, const char *format, va_list args));
1169 # endif
1170 _GL_CXXALIASWARN (vdprintf);
1171 #elif defined GNULIB_POSIXCHECK
1172 # undef vdprintf
1173 # if HAVE_RAW_DECL_VDPRINTF
1174 _GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
1175                  "use gnulib module vdprintf for portability");
1176 # endif
1177 #endif
1178
1179 #if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
1180 # if (@GNULIB_VFPRINTF_POSIX@ && @REPLACE_VFPRINTF@) \
1181      || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
1182 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1183 #   define vfprintf rpl_vfprintf
1184 #  endif
1185 #  define GNULIB_overrides_vfprintf 1
1186 #  if @GNULIB_VFPRINTF_POSIX@
1187 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
1188                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1189                                  _GL_ARG_NONNULL ((1, 2)));
1190 #  else
1191 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
1192                                  _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 0)
1193                                  _GL_ARG_NONNULL ((1, 2)));
1194 #  endif
1195 _GL_CXXALIAS_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args));
1196 # else
1197 /* Need to cast, because on Solaris, the third parameter is
1198                                                       __va_list args
1199    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1200 _GL_CXXALIAS_SYS_CAST (vfprintf, int,
1201                        (FILE *fp, const char *format, va_list args));
1202 # endif
1203 _GL_CXXALIASWARN (vfprintf);
1204 #endif
1205 #if !@GNULIB_VFPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
1206 # if !GNULIB_overrides_vfprintf
1207 #  undef vfprintf
1208 # endif
1209 /* Assume vfprintf is always declared.  */
1210 _GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
1211                  "use gnulib module vfprintf-posix for portable "
1212                       "POSIX compliance");
1213 #endif
1214
1215 #if @GNULIB_VFSCANF@
1216 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
1217 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1218 #   undef vfscanf
1219 #   define vfscanf rpl_vfscanf
1220 #  endif
1221 _GL_FUNCDECL_RPL (vfscanf, int,
1222                   (FILE *stream, const char *format, va_list args)
1223                   _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 0)
1224                   _GL_ARG_NONNULL ((1, 2)));
1225 _GL_CXXALIAS_RPL (vfscanf, int,
1226                   (FILE *stream, const char *format, va_list args));
1227 # else
1228 _GL_CXXALIAS_SYS (vfscanf, int,
1229                   (FILE *stream, const char *format, va_list args));
1230 # endif
1231 _GL_CXXALIASWARN (vfscanf);
1232 #endif
1233
1234 #if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VPRINTF@
1235 # if (@GNULIB_VPRINTF_POSIX@ && @REPLACE_VPRINTF@) \
1236      || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
1237 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1238 #   define vprintf rpl_vprintf
1239 #  endif
1240 #  define GNULIB_overrides_vprintf 1
1241 #  if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
1242 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
1243                                 _GL_ATTRIBUTE_FORMAT_PRINTF (1, 0)
1244                                 _GL_ARG_NONNULL ((1)));
1245 #  else
1246 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
1247                                 _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 0)
1248                                 _GL_ARG_NONNULL ((1)));
1249 #  endif
1250 _GL_CXXALIAS_RPL (vprintf, int, (const char *format, va_list args));
1251 # else
1252 /* Need to cast, because on Solaris, the second parameter is
1253                                                           __va_list args
1254    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1255 _GL_CXXALIAS_SYS_CAST (vprintf, int, (const char *format, va_list args));
1256 # endif
1257 _GL_CXXALIASWARN (vprintf);
1258 #endif
1259 #if !@GNULIB_VPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
1260 # if !GNULIB_overrides_vprintf
1261 #  undef vprintf
1262 # endif
1263 /* Assume vprintf is always declared.  */
1264 _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
1265                  "use gnulib module vprintf-posix for portable "
1266                  "POSIX compliance");
1267 #endif
1268
1269 #if @GNULIB_VSCANF@
1270 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
1271 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1272 #   undef vscanf
1273 #   define vscanf rpl_vscanf
1274 #  endif
1275 _GL_FUNCDECL_RPL (vscanf, int, (const char *format, va_list args)
1276                                _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 0)
1277                                _GL_ARG_NONNULL ((1)));
1278 _GL_CXXALIAS_RPL (vscanf, int, (const char *format, va_list args));
1279 # else
1280 _GL_CXXALIAS_SYS (vscanf, int, (const char *format, va_list args));
1281 # endif
1282 _GL_CXXALIASWARN (vscanf);
1283 #endif
1284
1285 #if @GNULIB_VSNPRINTF@
1286 # if @REPLACE_VSNPRINTF@
1287 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1288 #   define vsnprintf rpl_vsnprintf
1289 #  endif
1290 _GL_FUNCDECL_RPL (vsnprintf, int,
1291                   (char *str, size_t size, const char *format, va_list args)
1292                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
1293                   _GL_ARG_NONNULL ((3)));
1294 _GL_CXXALIAS_RPL (vsnprintf, int,
1295                   (char *str, size_t size, const char *format, va_list args));
1296 # else
1297 #  if !@HAVE_DECL_VSNPRINTF@
1298 _GL_FUNCDECL_SYS (vsnprintf, int,
1299                   (char *str, size_t size, const char *format, va_list args)
1300                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
1301                   _GL_ARG_NONNULL ((3)));
1302 #  endif
1303 _GL_CXXALIAS_SYS (vsnprintf, int,
1304                   (char *str, size_t size, const char *format, va_list args));
1305 # endif
1306 _GL_CXXALIASWARN (vsnprintf);
1307 #elif defined GNULIB_POSIXCHECK
1308 # undef vsnprintf
1309 # if HAVE_RAW_DECL_VSNPRINTF
1310 _GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
1311                  "use gnulib module vsnprintf for portability");
1312 # endif
1313 #endif
1314
1315 #if @GNULIB_VSPRINTF_POSIX@
1316 # if @REPLACE_VSPRINTF@
1317 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1318 #   define vsprintf rpl_vsprintf
1319 #  endif
1320 _GL_FUNCDECL_RPL (vsprintf, int,
1321                   (char *str, const char *format, va_list args)
1322                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1323                   _GL_ARG_NONNULL ((1, 2)));
1324 _GL_CXXALIAS_RPL (vsprintf, int,
1325                   (char *str, const char *format, va_list args));
1326 # else
1327 /* Need to cast, because on Solaris, the third parameter is
1328                                                        __va_list args
1329    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1330 _GL_CXXALIAS_SYS_CAST (vsprintf, int,
1331                        (char *str, const char *format, va_list args));
1332 # endif
1333 _GL_CXXALIASWARN (vsprintf);
1334 #elif defined GNULIB_POSIXCHECK
1335 # undef vsprintf
1336 /* Assume vsprintf is always declared.  */
1337 _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
1338                  "use gnulib module vsprintf-posix for portable "
1339                       "POSIX compliance");
1340 #endif
1341
1342 #endif /* _@GUARD_PREFIX@_STDIO_H */
1343 #endif /* _@GUARD_PREFIX@_STDIO_H */
1344 #endif