lib/stdio.in.h

   1 /* A GNU-like <stdio.h>.
   2
   3    Copyright (C) 2004, 2007-2012 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 glibc bug 11959
 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, so it's not
 582    needed for C++.  */
 583 #  if !defined __cplusplus && 0 < __USE_FORTIFY_LEVEL
 584 static inline size_t _GL_ARG_NONNULL ((1, 4))
 585 rpl_fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
 586 {
 587   size_t r = fwrite (ptr, s, n, stream);
 588   (void) r;
 589   return r;
 590 }
 591 #   undef fwrite
 592 #   define fwrite rpl_fwrite
 593 #  endif
 594 # endif
 595 _GL_CXXALIASWARN (fwrite);
 596 #endif
 597
 598 #if @GNULIB_GETC@
 599 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 600 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 601 #   undef getc
 602 #   define getc rpl_fgetc
 603 #  endif
 604 _GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 605 _GL_CXXALIAS_RPL_1 (getc, rpl_fgetc, int, (FILE *stream));
 606 # else
 607 _GL_CXXALIAS_SYS (getc, int, (FILE *stream));
 608 # endif
 609 _GL_CXXALIASWARN (getc);
 610 #endif
 611
 612 #if @GNULIB_GETCHAR@
 613 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 614 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 615 #   undef getchar
 616 #   define getchar rpl_getchar
 617 #  endif
 618 _GL_FUNCDECL_RPL (getchar, int, (void));
 619 _GL_CXXALIAS_RPL (getchar, int, (void));
 620 # else
 621 _GL_CXXALIAS_SYS (getchar, int, (void));
 622 # endif
 623 _GL_CXXALIASWARN (getchar);
 624 #endif
 625
 626 #if @GNULIB_GETDELIM@
 627 /* Read input, up to (and including) the next occurrence of DELIMITER, from
 628    STREAM, store it in *LINEPTR (and NUL-terminate it).
 629    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
 630    bytes of space.  It is realloc'd as necessary.
 631    Return the number of bytes read and stored at *LINEPTR (not including the
 632    NUL terminator), or -1 on error or EOF.  */
 633 # if @REPLACE_GETDELIM@
 634 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 635 #   undef getdelim
 636 #   define getdelim rpl_getdelim
 637 #  endif
 638 _GL_FUNCDECL_RPL (getdelim, ssize_t,
 639                   (char **lineptr, size_t *linesize, int delimiter,
 640                    FILE *stream)
 641                   _GL_ARG_NONNULL ((1, 2, 4)));
 642 _GL_CXXALIAS_RPL (getdelim, ssize_t,
 643                   (char **lineptr, size_t *linesize, int delimiter,
 644                    FILE *stream));
 645 # else
 646 #  if !@HAVE_DECL_GETDELIM@
 647 _GL_FUNCDECL_SYS (getdelim, ssize_t,
 648                   (char **lineptr, size_t *linesize, int delimiter,
 649                    FILE *stream)
 650                   _GL_ARG_NONNULL ((1, 2, 4)));
 651 #  endif
 652 _GL_CXXALIAS_SYS (getdelim, ssize_t,
 653                   (char **lineptr, size_t *linesize, int delimiter,
 654                    FILE *stream));
 655 # endif
 656 _GL_CXXALIASWARN (getdelim);
 657 #elif defined GNULIB_POSIXCHECK
 658 # undef getdelim
 659 # if HAVE_RAW_DECL_GETDELIM
 660 _GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
 661                  "use gnulib module getdelim for portability");
 662 # endif
 663 #endif
 664
 665 #if @GNULIB_GETLINE@
 666 /* Read a line, up to (and including) the next newline, from STREAM, store it
 667    in *LINEPTR (and NUL-terminate it).
 668    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
 669    bytes of space.  It is realloc'd as necessary.
 670    Return the number of bytes read and stored at *LINEPTR (not including the
 671    NUL terminator), or -1 on error or EOF.  */
 672 # if @REPLACE_GETLINE@
 673 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 674 #   undef getline
 675 #   define getline rpl_getline
 676 #  endif
 677 _GL_FUNCDECL_RPL (getline, ssize_t,
 678                   (char **lineptr, size_t *linesize, FILE *stream)
 679                   _GL_ARG_NONNULL ((1, 2, 3)));
 680 _GL_CXXALIAS_RPL (getline, ssize_t,
 681                   (char **lineptr, size_t *linesize, FILE *stream));
 682 # else
 683 #  if !@HAVE_DECL_GETLINE@
 684 _GL_FUNCDECL_SYS (getline, ssize_t,
 685                   (char **lineptr, size_t *linesize, FILE *stream)
 686                   _GL_ARG_NONNULL ((1, 2, 3)));
 687 #  endif
 688 _GL_CXXALIAS_SYS (getline, ssize_t,
 689                   (char **lineptr, size_t *linesize, FILE *stream));
 690 # endif
 691 # if @HAVE_DECL_GETLINE@
 692 _GL_CXXALIASWARN (getline);
 693 # endif
 694 #elif defined GNULIB_POSIXCHECK
 695 # undef getline
 696 # if HAVE_RAW_DECL_GETLINE
 697 _GL_WARN_ON_USE (getline, "getline is unportable - "
 698                  "use gnulib module getline for portability");
 699 # endif
 700 #endif
 701
 702 /* It is very rare that the developer ever has full control of stdin,
 703    so any use of gets warrants an unconditional warning; besides, C11
 704    removed it.  */
 705 #undef gets
 706 #if HAVE_RAW_DECL_GETS
 707 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
 708 #endif
 709
 710
 711 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
 712 struct obstack;
 713 /* Grow an obstack with formatted output.  Return the number of
 714    bytes added to OBS.  No trailing nul byte is added, and the
 715    object should be closed with obstack_finish before use.  Upon
 716    memory allocation error, call obstack_alloc_failed_handler.  Upon
 717    other error, return -1.  */
 718 # if @REPLACE_OBSTACK_PRINTF@
 719 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 720 #   define obstack_printf rpl_obstack_printf
 721 #  endif
 722 _GL_FUNCDECL_RPL (obstack_printf, int,
 723                   (struct obstack *obs, const char *format, ...)
 724                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 725                   _GL_ARG_NONNULL ((1, 2)));
 726 _GL_CXXALIAS_RPL (obstack_printf, int,
 727                   (struct obstack *obs, const char *format, ...));
 728 # else
 729 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 730 _GL_FUNCDECL_SYS (obstack_printf, int,
 731                   (struct obstack *obs, const char *format, ...)
 732                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 733                   _GL_ARG_NONNULL ((1, 2)));
 734 #  endif
 735 _GL_CXXALIAS_SYS (obstack_printf, int,
 736                   (struct obstack *obs, const char *format, ...));
 737 # endif
 738 _GL_CXXALIASWARN (obstack_printf);
 739 # if @REPLACE_OBSTACK_PRINTF@
 740 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 741 #   define obstack_vprintf rpl_obstack_vprintf
 742 #  endif
 743 _GL_FUNCDECL_RPL (obstack_vprintf, int,
 744                   (struct obstack *obs, const char *format, va_list args)
 745                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
 746                   _GL_ARG_NONNULL ((1, 2)));
 747 _GL_CXXALIAS_RPL (obstack_vprintf, int,
 748                   (struct obstack *obs, const char *format, va_list args));
 749 # else
 750 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 751 _GL_FUNCDECL_SYS (obstack_vprintf, int,
 752                   (struct obstack *obs, const char *format, va_list args)
 753                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
 754                   _GL_ARG_NONNULL ((1, 2)));
 755 #  endif
 756 _GL_CXXALIAS_SYS (obstack_vprintf, int,
 757                   (struct obstack *obs, const char *format, va_list args));
 758 # endif
 759 _GL_CXXALIASWARN (obstack_vprintf);
 760 #endif
 761
 762 #if @GNULIB_PCLOSE@
 763 # if !@HAVE_PCLOSE@
 764 _GL_FUNCDECL_SYS (pclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 765 # endif
 766 _GL_CXXALIAS_SYS (pclose, int, (FILE *stream));
 767 _GL_CXXALIASWARN (pclose);
 768 #elif defined GNULIB_POSIXCHECK
 769 # undef pclose
 770 # if HAVE_RAW_DECL_PCLOSE
 771 _GL_WARN_ON_USE (pclose, "pclose is unportable - "
 772                  "use gnulib module pclose for more portability");
 773 # endif
 774 #endif
 775
 776 #if @GNULIB_PERROR@
 777 /* Print a message to standard error, describing the value of ERRNO,
 778    (if STRING is not NULL and not empty) prefixed with STRING and ": ",
 779    and terminated with a newline.  */
 780 # if @REPLACE_PERROR@
 781 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 782 #   define perror rpl_perror
 783 #  endif
 784 _GL_FUNCDECL_RPL (perror, void, (const char *string));
 785 _GL_CXXALIAS_RPL (perror, void, (const char *string));
 786 # else
 787 _GL_CXXALIAS_SYS (perror, void, (const char *string));
 788 # endif
 789 _GL_CXXALIASWARN (perror);
 790 #elif defined GNULIB_POSIXCHECK
 791 # undef perror
 792 /* Assume perror is always declared.  */
 793 _GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
 794                  "use gnulib module perror for portability");
 795 #endif
 796
 797 #if @GNULIB_POPEN@
 798 # if @REPLACE_POPEN@
 799 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 800 #   undef popen
 801 #   define popen rpl_popen
 802 #  endif
 803 _GL_FUNCDECL_RPL (popen, FILE *, (const char *cmd, const char *mode)
 804                                  _GL_ARG_NONNULL ((1, 2)));
 805 _GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode));
 806 # else
 807 #  if !@HAVE_POPEN@
 808 _GL_FUNCDECL_SYS (popen, FILE *, (const char *cmd, const char *mode)
 809                                  _GL_ARG_NONNULL ((1, 2)));
 810 #  endif
 811 _GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode));
 812 # endif
 813 _GL_CXXALIASWARN (popen);
 814 #elif defined GNULIB_POSIXCHECK
 815 # undef popen
 816 # if HAVE_RAW_DECL_POPEN
 817 _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
 818                  "use gnulib module popen or pipe for more portability");
 819 # endif
 820 #endif
 821
 822 #if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
 823 # if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
 824      || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 825 #  if defined __GNUC__
 826 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 827 /* Don't break __attribute__((format(printf,M,N))).  */
 828 #    define printf __printf__
 829 #   endif
 830 #   if @GNULIB_PRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 831 _GL_FUNCDECL_RPL_1 (__printf__, int,
 832                     (const char *format, ...)
 833                     __asm__ (@ASM_SYMBOL_PREFIX@
 834                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
 835                     _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
 836                     _GL_ARG_NONNULL ((1)));
 837 #   else
 838 _GL_FUNCDECL_RPL_1 (__printf__, int,
 839                     (const char *format, ...)
 840                     __asm__ (@ASM_SYMBOL_PREFIX@
 841                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
 842                     _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 2)
 843                     _GL_ARG_NONNULL ((1)));
 844 #   endif
 845 _GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
 846 #  else
 847 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 848 #    define printf rpl_printf
 849 #   endif
 850 _GL_FUNCDECL_RPL (printf, int,
 851                   (const char *format, ...)
 852                   _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
 853                   _GL_ARG_NONNULL ((1)));
 854 _GL_CXXALIAS_RPL (printf, int, (const char *format, ...));
 855 #  endif
 856 #  define GNULIB_overrides_printf 1
 857 # else
 858 _GL_CXXALIAS_SYS (printf, int, (const char *format, ...));
 859 # endif
 860 _GL_CXXALIASWARN (printf);
 861 #endif
 862 #if !@GNULIB_PRINTF_POSIX@ && defined GNULIB_POSIXCHECK
 863 # if !GNULIB_overrides_printf
 864 #  undef printf
 865 # endif
 866 /* Assume printf is always declared.  */
 867 _GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
 868                  "use gnulib module printf-posix for portable "
 869                  "POSIX compliance");
 870 #endif
 871
 872 #if @GNULIB_PUTC@
 873 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 874 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 875 #   undef putc
 876 #   define putc rpl_fputc
 877 #  endif
 878 _GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
 879 _GL_CXXALIAS_RPL_1 (putc, rpl_fputc, int, (int c, FILE *stream));
 880 # else
 881 _GL_CXXALIAS_SYS (putc, int, (int c, FILE *stream));
 882 # endif
 883 _GL_CXXALIASWARN (putc);
 884 #endif
 885
 886 #if @GNULIB_PUTCHAR@
 887 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 888 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 889 #   undef putchar
 890 #   define putchar rpl_putchar
 891 #  endif
 892 _GL_FUNCDECL_RPL (putchar, int, (int c));
 893 _GL_CXXALIAS_RPL (putchar, int, (int c));
 894 # else
 895 _GL_CXXALIAS_SYS (putchar, int, (int c));
 896 # endif
 897 _GL_CXXALIASWARN (putchar);
 898 #endif
 899
 900 #if @GNULIB_PUTS@
 901 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 902 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 903 #   undef puts
 904 #   define puts rpl_puts
 905 #  endif
 906 _GL_FUNCDECL_RPL (puts, int, (const char *string) _GL_ARG_NONNULL ((1)));
 907 _GL_CXXALIAS_RPL (puts, int, (const char *string));
 908 # else
 909 _GL_CXXALIAS_SYS (puts, int, (const char *string));
 910 # endif
 911 _GL_CXXALIASWARN (puts);
 912 #endif
 913
 914 #if @GNULIB_REMOVE@
 915 # if @REPLACE_REMOVE@
 916 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 917 #   undef remove
 918 #   define remove rpl_remove
 919 #  endif
 920 _GL_FUNCDECL_RPL (remove, int, (const char *name) _GL_ARG_NONNULL ((1)));
 921 _GL_CXXALIAS_RPL (remove, int, (const char *name));
 922 # else
 923 _GL_CXXALIAS_SYS (remove, int, (const char *name));
 924 # endif
 925 _GL_CXXALIASWARN (remove);
 926 #elif defined GNULIB_POSIXCHECK
 927 # undef remove
 928 /* Assume remove is always declared.  */
 929 _GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
 930                  "use gnulib module remove for more portability");
 931 #endif
 932
 933 #if @GNULIB_RENAME@
 934 # if @REPLACE_RENAME@
 935 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 936 #   undef rename
 937 #   define rename rpl_rename
 938 #  endif
 939 _GL_FUNCDECL_RPL (rename, int,
 940                   (const char *old_filename, const char *new_filename)
 941                   _GL_ARG_NONNULL ((1, 2)));
 942 _GL_CXXALIAS_RPL (rename, int,
 943                   (const char *old_filename, const char *new_filename));
 944 # else
 945 _GL_CXXALIAS_SYS (rename, int,
 946                   (const char *old_filename, const char *new_filename));
 947 # endif
 948 _GL_CXXALIASWARN (rename);
 949 #elif defined GNULIB_POSIXCHECK
 950 # undef rename
 951 /* Assume rename is always declared.  */
 952 _GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
 953                  "use gnulib module rename for more portability");
 954 #endif
 955
 956 #if @GNULIB_RENAMEAT@
 957 # if @REPLACE_RENAMEAT@
 958 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 959 #   undef renameat
 960 #   define renameat rpl_renameat
 961 #  endif
 962 _GL_FUNCDECL_RPL (renameat, int,
 963                   (int fd1, char const *file1, int fd2, char const *file2)
 964                   _GL_ARG_NONNULL ((2, 4)));
 965 _GL_CXXALIAS_RPL (renameat, int,
 966                   (int fd1, char const *file1, int fd2, char const *file2));
 967 # else
 968 #  if !@HAVE_RENAMEAT@
 969 _GL_FUNCDECL_SYS (renameat, int,
 970                   (int fd1, char const *file1, int fd2, char const *file2)
 971                   _GL_ARG_NONNULL ((2, 4)));
 972 #  endif
 973 _GL_CXXALIAS_SYS (renameat, int,
 974                   (int fd1, char const *file1, int fd2, char const *file2));
 975 # endif
 976 _GL_CXXALIASWARN (renameat);
 977 #elif defined GNULIB_POSIXCHECK
 978 # undef renameat
 979 # if HAVE_RAW_DECL_RENAMEAT
 980 _GL_WARN_ON_USE (renameat, "renameat is not portable - "
 981                  "use gnulib module renameat for portability");
 982 # endif
 983 #endif
 984
 985 #if @GNULIB_SCANF@
 986 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 987 #  if defined __GNUC__
 988 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 989 #    undef scanf
 990 /* Don't break __attribute__((format(scanf,M,N))).  */
 991 #    define scanf __scanf__
 992 #   endif
 993 _GL_FUNCDECL_RPL_1 (__scanf__, int,
 994                     (const char *format, ...)
 995                     __asm__ (@ASM_SYMBOL_PREFIX@
 996                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_scanf))
 997                     _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
 998                     _GL_ARG_NONNULL ((1)));
 999 _GL_CXXALIAS_RPL_1 (scanf, __scanf__, int, (const char *format, ...));
1000 #  else
1001 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1002 #    undef scanf
1003 #    define scanf rpl_scanf
1004 #   endif
1005 _GL_FUNCDECL_RPL (scanf, int, (const char *format, ...)
1006                               _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
1007                               _GL_ARG_NONNULL ((1)));
1008 _GL_CXXALIAS_RPL (scanf, int, (const char *format, ...));
1009 #  endif
1010 # else
1011 _GL_CXXALIAS_SYS (scanf, int, (const char *format, ...));
1012 # endif
1013 _GL_CXXALIASWARN (scanf);
1014 #endif
1015
1016 #if @GNULIB_SNPRINTF@
1017 # if @REPLACE_SNPRINTF@
1018 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1019 #   define snprintf rpl_snprintf
1020 #  endif
1021 _GL_FUNCDECL_RPL (snprintf, int,
1022                   (char *str, size_t size, const char *format, ...)
1023                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
1024                   _GL_ARG_NONNULL ((3)));
1025 _GL_CXXALIAS_RPL (snprintf, int,
1026                   (char *str, size_t size, const char *format, ...));
1027 # else
1028 #  if !@HAVE_DECL_SNPRINTF@
1029 _GL_FUNCDECL_SYS (snprintf, int,
1030                   (char *str, size_t size, const char *format, ...)
1031                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
1032                   _GL_ARG_NONNULL ((3)));
1033 #  endif
1034 _GL_CXXALIAS_SYS (snprintf, int,
1035                   (char *str, size_t size, const char *format, ...));
1036 # endif
1037 _GL_CXXALIASWARN (snprintf);
1038 #elif defined GNULIB_POSIXCHECK
1039 # undef snprintf
1040 # if HAVE_RAW_DECL_SNPRINTF
1041 _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
1042                  "use gnulib module snprintf for portability");
1043 # endif
1044 #endif
1045
1046 /* Some people would argue that all sprintf uses should be warned about
1047    (for example, OpenBSD issues a link warning for it),
1048    since it can cause security holes due to buffer overruns.
1049    However, we believe that sprintf can be used safely, and is more
1050    efficient than snprintf in those safe cases; and as proof of our
1051    belief, we use sprintf in several gnulib modules.  So this header
1052    intentionally avoids adding a warning to sprintf except when
1053    GNULIB_POSIXCHECK is defined.  */
1054
1055 #if @GNULIB_SPRINTF_POSIX@
1056 # if @REPLACE_SPRINTF@
1057 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1058 #   define sprintf rpl_sprintf
1059 #  endif
1060 _GL_FUNCDECL_RPL (sprintf, int, (char *str, const char *format, ...)
1061                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1062                                 _GL_ARG_NONNULL ((1, 2)));
1063 _GL_CXXALIAS_RPL (sprintf, int, (char *str, const char *format, ...));
1064 # else
1065 _GL_CXXALIAS_SYS (sprintf, int, (char *str, const char *format, ...));
1066 # endif
1067 _GL_CXXALIASWARN (sprintf);
1068 #elif defined GNULIB_POSIXCHECK
1069 # undef sprintf
1070 /* Assume sprintf is always declared.  */
1071 _GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
1072                  "use gnulib module sprintf-posix for portable "
1073                  "POSIX compliance");
1074 #endif
1075
1076 #if @GNULIB_TMPFILE@
1077 # if @REPLACE_TMPFILE@
1078 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1079 #   define tmpfile rpl_tmpfile
1080 #  endif
1081 _GL_FUNCDECL_RPL (tmpfile, FILE *, (void));
1082 _GL_CXXALIAS_RPL (tmpfile, FILE *, (void));
1083 # else
1084 _GL_CXXALIAS_SYS (tmpfile, FILE *, (void));
1085 # endif
1086 _GL_CXXALIASWARN (tmpfile);
1087 #elif defined GNULIB_POSIXCHECK
1088 # undef tmpfile
1089 # if HAVE_RAW_DECL_TMPFILE
1090 _GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
1091                  "use gnulib module tmpfile for portability");
1092 # endif
1093 #endif
1094
1095 #if @GNULIB_VASPRINTF@
1096 /* Write formatted output to a string dynamically allocated with malloc().
1097    If the memory allocation succeeds, store the address of the string in
1098    *RESULT and return the number of resulting bytes, excluding the trailing
1099    NUL.  Upon memory allocation error, or some other error, return -1.  */
1100 # if @REPLACE_VASPRINTF@
1101 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1102 #   define asprintf rpl_asprintf
1103 #  endif
1104 _GL_FUNCDECL_RPL (asprintf, int,
1105                   (char **result, const char *format, ...)
1106                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1107                   _GL_ARG_NONNULL ((1, 2)));
1108 _GL_CXXALIAS_RPL (asprintf, int,
1109                   (char **result, const char *format, ...));
1110 # else
1111 #  if !@HAVE_VASPRINTF@
1112 _GL_FUNCDECL_SYS (asprintf, int,
1113                   (char **result, const char *format, ...)
1114                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1115                   _GL_ARG_NONNULL ((1, 2)));
1116 #  endif
1117 _GL_CXXALIAS_SYS (asprintf, int,
1118                   (char **result, const char *format, ...));
1119 # endif
1120 _GL_CXXALIASWARN (asprintf);
1121 # if @REPLACE_VASPRINTF@
1122 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1123 #   define vasprintf rpl_vasprintf
1124 #  endif
1125 _GL_FUNCDECL_RPL (vasprintf, int,
1126                   (char **result, const char *format, va_list args)
1127                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1128                   _GL_ARG_NONNULL ((1, 2)));
1129 _GL_CXXALIAS_RPL (vasprintf, int,
1130                   (char **result, const char *format, va_list args));
1131 # else
1132 #  if !@HAVE_VASPRINTF@
1133 _GL_FUNCDECL_SYS (vasprintf, int,
1134                   (char **result, const char *format, va_list args)
1135                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1136                   _GL_ARG_NONNULL ((1, 2)));
1137 #  endif
1138 _GL_CXXALIAS_SYS (vasprintf, int,
1139                   (char **result, const char *format, va_list args));
1140 # endif
1141 _GL_CXXALIASWARN (vasprintf);
1142 #endif
1143
1144 #if @GNULIB_VDPRINTF@
1145 # if @REPLACE_VDPRINTF@
1146 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1147 #   define vdprintf rpl_vdprintf
1148 #  endif
1149 _GL_FUNCDECL_RPL (vdprintf, int, (int fd, const char *format, va_list args)
1150                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1151                                  _GL_ARG_NONNULL ((2)));
1152 _GL_CXXALIAS_RPL (vdprintf, int, (int fd, const char *format, va_list args));
1153 # else
1154 #  if !@HAVE_VDPRINTF@
1155 _GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
1156                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1157                                  _GL_ARG_NONNULL ((2)));
1158 #  endif
1159 /* Need to cast, because on Solaris, the third parameter will likely be
1160                                                     __va_list args.  */
1161 _GL_CXXALIAS_SYS_CAST (vdprintf, int,
1162                        (int fd, const char *format, va_list args));
1163 # endif
1164 _GL_CXXALIASWARN (vdprintf);
1165 #elif defined GNULIB_POSIXCHECK
1166 # undef vdprintf
1167 # if HAVE_RAW_DECL_VDPRINTF
1168 _GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
1169                  "use gnulib module vdprintf for portability");
1170 # endif
1171 #endif
1172
1173 #if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
1174 # if (@GNULIB_VFPRINTF_POSIX@ && @REPLACE_VFPRINTF@) \
1175      || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
1176 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1177 #   define vfprintf rpl_vfprintf
1178 #  endif
1179 #  define GNULIB_overrides_vfprintf 1
1180 #  if @GNULIB_VFPRINTF_POSIX@
1181 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
1182                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1183                                  _GL_ARG_NONNULL ((1, 2)));
1184 #  else
1185 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
1186                                  _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 0)
1187                                  _GL_ARG_NONNULL ((1, 2)));
1188 #  endif
1189 _GL_CXXALIAS_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args));
1190 # else
1191 /* Need to cast, because on Solaris, the third parameter is
1192                                                       __va_list args
1193    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1194 _GL_CXXALIAS_SYS_CAST (vfprintf, int,
1195                        (FILE *fp, const char *format, va_list args));
1196 # endif
1197 _GL_CXXALIASWARN (vfprintf);
1198 #endif
1199 #if !@GNULIB_VFPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
1200 # if !GNULIB_overrides_vfprintf
1201 #  undef vfprintf
1202 # endif
1203 /* Assume vfprintf is always declared.  */
1204 _GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
1205                  "use gnulib module vfprintf-posix for portable "
1206                       "POSIX compliance");
1207 #endif
1208
1209 #if @GNULIB_VFSCANF@
1210 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
1211 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1212 #   undef vfscanf
1213 #   define vfscanf rpl_vfscanf
1214 #  endif
1215 _GL_FUNCDECL_RPL (vfscanf, int,
1216                   (FILE *stream, const char *format, va_list args)
1217                   _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 0)
1218                   _GL_ARG_NONNULL ((1, 2)));
1219 _GL_CXXALIAS_RPL (vfscanf, int,
1220                   (FILE *stream, const char *format, va_list args));
1221 # else
1222 _GL_CXXALIAS_SYS (vfscanf, int,
1223                   (FILE *stream, const char *format, va_list args));
1224 # endif
1225 _GL_CXXALIASWARN (vfscanf);
1226 #endif
1227
1228 #if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VPRINTF@
1229 # if (@GNULIB_VPRINTF_POSIX@ && @REPLACE_VPRINTF@) \
1230      || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
1231 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1232 #   define vprintf rpl_vprintf
1233 #  endif
1234 #  define GNULIB_overrides_vprintf 1
1235 #  if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
1236 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
1237                                 _GL_ATTRIBUTE_FORMAT_PRINTF (1, 0)
1238                                 _GL_ARG_NONNULL ((1)));
1239 #  else
1240 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
1241                                 _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 0)
1242                                 _GL_ARG_NONNULL ((1)));
1243 #  endif
1244 _GL_CXXALIAS_RPL (vprintf, int, (const char *format, va_list args));
1245 # else
1246 /* Need to cast, because on Solaris, the second parameter is
1247                                                           __va_list args
1248    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1249 _GL_CXXALIAS_SYS_CAST (vprintf, int, (const char *format, va_list args));
1250 # endif
1251 _GL_CXXALIASWARN (vprintf);
1252 #endif
1253 #if !@GNULIB_VPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
1254 # if !GNULIB_overrides_vprintf
1255 #  undef vprintf
1256 # endif
1257 /* Assume vprintf is always declared.  */
1258 _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
1259                  "use gnulib module vprintf-posix for portable "
1260                  "POSIX compliance");
1261 #endif
1262
1263 #if @GNULIB_VSCANF@
1264 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
1265 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1266 #   undef vscanf
1267 #   define vscanf rpl_vscanf
1268 #  endif
1269 _GL_FUNCDECL_RPL (vscanf, int, (const char *format, va_list args)
1270                                _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 0)
1271                                _GL_ARG_NONNULL ((1)));
1272 _GL_CXXALIAS_RPL (vscanf, int, (const char *format, va_list args));
1273 # else
1274 _GL_CXXALIAS_SYS (vscanf, int, (const char *format, va_list args));
1275 # endif
1276 _GL_CXXALIASWARN (vscanf);
1277 #endif
1278
1279 #if @GNULIB_VSNPRINTF@
1280 # if @REPLACE_VSNPRINTF@
1281 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1282 #   define vsnprintf rpl_vsnprintf
1283 #  endif
1284 _GL_FUNCDECL_RPL (vsnprintf, int,
1285                   (char *str, size_t size, const char *format, va_list args)
1286                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
1287                   _GL_ARG_NONNULL ((3)));
1288 _GL_CXXALIAS_RPL (vsnprintf, int,
1289                   (char *str, size_t size, const char *format, va_list args));
1290 # else
1291 #  if !@HAVE_DECL_VSNPRINTF@
1292 _GL_FUNCDECL_SYS (vsnprintf, int,
1293                   (char *str, size_t size, const char *format, va_list args)
1294                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
1295                   _GL_ARG_NONNULL ((3)));
1296 #  endif
1297 _GL_CXXALIAS_SYS (vsnprintf, int,
1298                   (char *str, size_t size, const char *format, va_list args));
1299 # endif
1300 _GL_CXXALIASWARN (vsnprintf);
1301 #elif defined GNULIB_POSIXCHECK
1302 # undef vsnprintf
1303 # if HAVE_RAW_DECL_VSNPRINTF
1304 _GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
1305                  "use gnulib module vsnprintf for portability");
1306 # endif
1307 #endif
1308
1309 #if @GNULIB_VSPRINTF_POSIX@
1310 # if @REPLACE_VSPRINTF@
1311 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1312 #   define vsprintf rpl_vsprintf
1313 #  endif
1314 _GL_FUNCDECL_RPL (vsprintf, int,
1315                   (char *str, const char *format, va_list args)
1316                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1317                   _GL_ARG_NONNULL ((1, 2)));
1318 _GL_CXXALIAS_RPL (vsprintf, int,
1319                   (char *str, const char *format, va_list args));
1320 # else
1321 /* Need to cast, because on Solaris, the third parameter is
1322                                                        __va_list args
1323    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1324 _GL_CXXALIAS_SYS_CAST (vsprintf, int,
1325                        (char *str, const char *format, va_list args));
1326 # endif
1327 _GL_CXXALIASWARN (vsprintf);
1328 #elif defined GNULIB_POSIXCHECK
1329 # undef vsprintf
1330 /* Assume vsprintf is always declared.  */
1331 _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
1332                  "use gnulib module vsprintf-posix for portable "
1333                       "POSIX compliance");
1334 #endif
1335
1336
1337 #endif /* _@GUARD_PREFIX@_STDIO_H */
1338 #endif /* _@GUARD_PREFIX@_STDIO_H */
1339 #endif