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