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 _GL_INLINE_HEADER_BEGIN
  50 #ifndef _GL_STDIO_INLINE
  51 # define _GL_STDIO_INLINE _GL_INLINE
  52 #endif
  53
  54 /* Get va_list.  Needed on many systems, including glibc 2.8.  */
  55 #include <stdarg.h>
  56
  57 #include <stddef.h>
  58
  59 /* Get off_t and ssize_t.  Needed on many systems, including glibc 2.8
  60    and eglibc 2.11.2.
  61    May also define off_t to a 64-bit type on native Windows.  */
  62 #include <sys/types.h>
  63
  64 /* The __attribute__ feature is available in gcc versions 2.5 and later.
  65    The __-protected variants of the attributes 'format' and 'printf' are
  66    accepted by gcc versions 2.6.4 (effectively 2.7) and later.
  67    We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
  68    gnulib and libintl do '#define printf __printf__' when they override
  69    the 'printf' function.  */
  70 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  71 # define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
  72 #else
  73 # define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
  74 #endif
  75
  76 /* _GL_ATTRIBUTE_FORMAT_PRINTF
  77    indicates to GCC that the function takes a format string and arguments,
  78    where the format string directives are the ones standardized by ISO C99
  79    and POSIX.  */
  80 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
  81 # define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
  82    _GL_ATTRIBUTE_FORMAT ((__gnu_printf__, formatstring_parameter, first_argument))
  83 #else
  84 # define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
  85    _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
  86 #endif
  87
  88 /* _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_PRINTF,
  89    except that it indicates to GCC that the supported format string directives
  90    are the ones of the system printf(), rather than the ones standardized by
  91    ISO C99 and POSIX.  */
  92 #define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \
  93   _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
  94
  95 /* _GL_ATTRIBUTE_FORMAT_SCANF
  96    indicates to GCC that the function takes a format string and arguments,
  97    where the format string directives are the ones standardized by ISO C99
  98    and POSIX.  */
  99 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
 100 # define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
 101    _GL_ATTRIBUTE_FORMAT ((__gnu_scanf__, formatstring_parameter, first_argument))
 102 #else
 103 # define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
 104    _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
 105 #endif
 106
 107 /* _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_SCANF,
 108    except that it indicates to GCC that the supported format string directives
 109    are the ones of the system scanf(), rather than the ones standardized by
 110    ISO C99 and POSIX.  */
 111 #define _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM(formatstring_parameter, first_argument) \
 112   _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
 113
 114 /* Solaris 10 declares renameat in <unistd.h>, not in <stdio.h>.  */
 115 /* But in any case avoid namespace pollution on glibc systems.  */
 116 #if (@GNULIB_RENAMEAT@ || defined GNULIB_POSIXCHECK) && defined __sun \
 117     && ! defined __GLIBC__
 118 # include <unistd.h>
 119 #endif
 120
 121
 122 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 123
 124 /* The definition of _GL_ARG_NONNULL is copied here.  */
 125
 126 /* The definition of _GL_WARN_ON_USE is copied here.  */
 127
 128 /* Macros for stringification.  */
 129 #define _GL_STDIO_STRINGIZE(token) #token
 130 #define _GL_STDIO_MACROEXPAND_AND_STRINGIZE(token) _GL_STDIO_STRINGIZE(token)
 131
 132
 133 #if @GNULIB_DPRINTF@
 134 # if @REPLACE_DPRINTF@
 135 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 136 #   define dprintf rpl_dprintf
 137 #  endif
 138 _GL_FUNCDECL_RPL (dprintf, int, (int fd, const char *format, ...)
 139                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 140                                 _GL_ARG_NONNULL ((2)));
 141 _GL_CXXALIAS_RPL (dprintf, int, (int fd, const char *format, ...));
 142 # else
 143 #  if !@HAVE_DPRINTF@
 144 _GL_FUNCDECL_SYS (dprintf, int, (int fd, const char *format, ...)
 145                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 146                                 _GL_ARG_NONNULL ((2)));
 147 #  endif
 148 _GL_CXXALIAS_SYS (dprintf, int, (int fd, const char *format, ...));
 149 # endif
 150 _GL_CXXALIASWARN (dprintf);
 151 #elif defined GNULIB_POSIXCHECK
 152 # undef dprintf
 153 # if HAVE_RAW_DECL_DPRINTF
 154 _GL_WARN_ON_USE (dprintf, "dprintf is unportable - "
 155                  "use gnulib module dprintf for portability");
 156 # endif
 157 #endif
 158
 159 #if @GNULIB_FCLOSE@
 160 /* Close STREAM and its underlying file descriptor.  */
 161 # if @REPLACE_FCLOSE@
 162 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 163 #   define fclose rpl_fclose
 164 #  endif
 165 _GL_FUNCDECL_RPL (fclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 166 _GL_CXXALIAS_RPL (fclose, int, (FILE *stream));
 167 # else
 168 _GL_CXXALIAS_SYS (fclose, int, (FILE *stream));
 169 # endif
 170 _GL_CXXALIASWARN (fclose);
 171 #elif defined GNULIB_POSIXCHECK
 172 # undef fclose
 173 /* Assume fclose is always declared.  */
 174 _GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - "
 175                  "use gnulib module fclose for portable POSIX compliance");
 176 #endif
 177
 178 #if @GNULIB_FDOPEN@
 179 # if @REPLACE_FDOPEN@
 180 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 181 #   undef fdopen
 182 #   define fdopen rpl_fdopen
 183 #  endif
 184 _GL_FUNCDECL_RPL (fdopen, FILE *, (int fd, const char *mode)
 185                                   _GL_ARG_NONNULL ((2)));
 186 _GL_CXXALIAS_RPL (fdopen, FILE *, (int fd, const char *mode));
 187 # else
 188 _GL_CXXALIAS_SYS (fdopen, FILE *, (int fd, const char *mode));
 189 # endif
 190 _GL_CXXALIASWARN (fdopen);
 191 #elif defined GNULIB_POSIXCHECK
 192 # undef fdopen
 193 /* Assume fdopen is always declared.  */
 194 _GL_WARN_ON_USE (fdopen, "fdopen on native Windows platforms is not POSIX compliant - "
 195                  "use gnulib module fdopen for portability");
 196 #endif
 197
 198 #if @GNULIB_FFLUSH@
 199 /* Flush all pending data on STREAM according to POSIX rules.  Both
 200    output and seekable input streams are supported.
 201    Note! LOSS OF DATA can occur if fflush is applied on an input stream
 202    that is _not_seekable_ or on an update stream that is _not_seekable_
 203    and in which the most recent operation was input.  Seekability can
 204    be tested with lseek(fileno(fp),0,SEEK_CUR).  */
 205 # if @REPLACE_FFLUSH@
 206 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 207 #   define fflush rpl_fflush
 208 #  endif
 209 _GL_FUNCDECL_RPL (fflush, int, (FILE *gl_stream));
 210 _GL_CXXALIAS_RPL (fflush, int, (FILE *gl_stream));
 211 # else
 212 _GL_CXXALIAS_SYS (fflush, int, (FILE *gl_stream));
 213 # endif
 214 _GL_CXXALIASWARN (fflush);
 215 #elif defined GNULIB_POSIXCHECK
 216 # undef fflush
 217 /* Assume fflush is always declared.  */
 218 _GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
 219                  "use gnulib module fflush for portable POSIX compliance");
 220 #endif
 221
 222 #if @GNULIB_FGETC@
 223 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 224 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 225 #   undef fgetc
 226 #   define fgetc rpl_fgetc
 227 #  endif
 228 _GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 229 _GL_CXXALIAS_RPL (fgetc, int, (FILE *stream));
 230 # else
 231 _GL_CXXALIAS_SYS (fgetc, int, (FILE *stream));
 232 # endif
 233 _GL_CXXALIASWARN (fgetc);
 234 #endif
 235
 236 #if @GNULIB_FGETS@
 237 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 238 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 239 #   undef fgets
 240 #   define fgets rpl_fgets
 241 #  endif
 242 _GL_FUNCDECL_RPL (fgets, char *, (char *s, int n, FILE *stream)
 243                                  _GL_ARG_NONNULL ((1, 3)));
 244 _GL_CXXALIAS_RPL (fgets, char *, (char *s, int n, FILE *stream));
 245 # else
 246 _GL_CXXALIAS_SYS (fgets, char *, (char *s, int n, FILE *stream));
 247 # endif
 248 _GL_CXXALIASWARN (fgets);
 249 #endif
 250
 251 #if @GNULIB_FOPEN@
 252 # if @REPLACE_FOPEN@
 253 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 254 #   undef fopen
 255 #   define fopen rpl_fopen
 256 #  endif
 257 _GL_FUNCDECL_RPL (fopen, FILE *, (const char *filename, const char *mode)
 258                                  _GL_ARG_NONNULL ((1, 2)));
 259 _GL_CXXALIAS_RPL (fopen, FILE *, (const char *filename, const char *mode));
 260 # else
 261 _GL_CXXALIAS_SYS (fopen, FILE *, (const char *filename, const char *mode));
 262 # endif
 263 _GL_CXXALIASWARN (fopen);
 264 #elif defined GNULIB_POSIXCHECK
 265 # undef fopen
 266 /* Assume fopen is always declared.  */
 267 _GL_WARN_ON_USE (fopen, "fopen on native Windows platforms is not POSIX compliant - "
 268                  "use gnulib module fopen for portability");
 269 #endif
 270
 271 #if @GNULIB_FPRINTF_POSIX@ || @GNULIB_FPRINTF@
 272 # if (@GNULIB_FPRINTF_POSIX@ && @REPLACE_FPRINTF@) \
 273      || (@GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 274 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 275 #   define fprintf rpl_fprintf
 276 #  endif
 277 #  define GNULIB_overrides_fprintf 1
 278 #  if @GNULIB_FPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 279 _GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
 280                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 281                                 _GL_ARG_NONNULL ((1, 2)));
 282 #  else
 283 _GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
 284                                 _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 3)
 285                                 _GL_ARG_NONNULL ((1, 2)));
 286 #  endif
 287 _GL_CXXALIAS_RPL (fprintf, int, (FILE *fp, const char *format, ...));
 288 # else
 289 _GL_CXXALIAS_SYS (fprintf, int, (FILE *fp, const char *format, ...));
 290 # endif
 291 _GL_CXXALIASWARN (fprintf);
 292 #endif
 293 #if !@GNULIB_FPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
 294 # if !GNULIB_overrides_fprintf
 295 #  undef fprintf
 296 # endif
 297 /* Assume fprintf is always declared.  */
 298 _GL_WARN_ON_USE (fprintf, "fprintf is not always POSIX compliant - "
 299                  "use gnulib module fprintf-posix for portable "
 300                  "POSIX compliance");
 301 #endif
 302
 303 #if @GNULIB_FPURGE@
 304 /* Discard all pending buffered I/O data on STREAM.
 305    STREAM must not be wide-character oriented.
 306    When discarding pending output, the file position is set back to where it
 307    was before the write calls.  When discarding pending input, the file
 308    position is advanced to match the end of the previously read input.
 309    Return 0 if successful.  Upon error, return -1 and set errno.  */
 310 # if @REPLACE_FPURGE@
 311 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 312 #   define fpurge rpl_fpurge
 313 #  endif
 314 _GL_FUNCDECL_RPL (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
 315 _GL_CXXALIAS_RPL (fpurge, int, (FILE *gl_stream));
 316 # else
 317 #  if !@HAVE_DECL_FPURGE@
 318 _GL_FUNCDECL_SYS (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
 319 #  endif
 320 _GL_CXXALIAS_SYS (fpurge, int, (FILE *gl_stream));
 321 # endif
 322 _GL_CXXALIASWARN (fpurge);
 323 #elif defined GNULIB_POSIXCHECK
 324 # undef fpurge
 325 # if HAVE_RAW_DECL_FPURGE
 326 _GL_WARN_ON_USE (fpurge, "fpurge is not always present - "
 327                  "use gnulib module fpurge for portability");
 328 # endif
 329 #endif
 330
 331 #if @GNULIB_FPUTC@
 332 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 333 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 334 #   undef fputc
 335 #   define fputc rpl_fputc
 336 #  endif
 337 _GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
 338 _GL_CXXALIAS_RPL (fputc, int, (int c, FILE *stream));
 339 # else
 340 _GL_CXXALIAS_SYS (fputc, int, (int c, FILE *stream));
 341 # endif
 342 _GL_CXXALIASWARN (fputc);
 343 #endif
 344
 345 #if @GNULIB_FPUTS@
 346 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 347 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 348 #   undef fputs
 349 #   define fputs rpl_fputs
 350 #  endif
 351 _GL_FUNCDECL_RPL (fputs, int, (const char *string, FILE *stream)
 352                               _GL_ARG_NONNULL ((1, 2)));
 353 _GL_CXXALIAS_RPL (fputs, int, (const char *string, FILE *stream));
 354 # else
 355 _GL_CXXALIAS_SYS (fputs, int, (const char *string, FILE *stream));
 356 # endif
 357 _GL_CXXALIASWARN (fputs);
 358 #endif
 359
 360 #if @GNULIB_FREAD@
 361 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 362 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 363 #   undef fread
 364 #   define fread rpl_fread
 365 #  endif
 366 _GL_FUNCDECL_RPL (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream)
 367                                  _GL_ARG_NONNULL ((4)));
 368 _GL_CXXALIAS_RPL (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream));
 369 # else
 370 _GL_CXXALIAS_SYS (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream));
 371 # endif
 372 _GL_CXXALIASWARN (fread);
 373 #endif
 374
 375 #if @GNULIB_FREOPEN@
 376 # if @REPLACE_FREOPEN@
 377 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 378 #   undef freopen
 379 #   define freopen rpl_freopen
 380 #  endif
 381 _GL_FUNCDECL_RPL (freopen, FILE *,
 382                   (const char *filename, const char *mode, FILE *stream)
 383                   _GL_ARG_NONNULL ((2, 3)));
 384 _GL_CXXALIAS_RPL (freopen, FILE *,
 385                   (const char *filename, const char *mode, FILE *stream));
 386 # else
 387 _GL_CXXALIAS_SYS (freopen, FILE *,
 388                   (const char *filename, const char *mode, FILE *stream));
 389 # endif
 390 _GL_CXXALIASWARN (freopen);
 391 #elif defined GNULIB_POSIXCHECK
 392 # undef freopen
 393 /* Assume freopen is always declared.  */
 394 _GL_WARN_ON_USE (freopen,
 395                  "freopen on native Windows platforms is not POSIX compliant - "
 396                  "use gnulib module freopen for portability");
 397 #endif
 398
 399 #if @GNULIB_FSCANF@
 400 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 401 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 402 #   undef fscanf
 403 #   define fscanf rpl_fscanf
 404 #  endif
 405 _GL_FUNCDECL_RPL (fscanf, int, (FILE *stream, const char *format, ...)
 406                                _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 3)
 407                                _GL_ARG_NONNULL ((1, 2)));
 408 _GL_CXXALIAS_RPL (fscanf, int, (FILE *stream, const char *format, ...));
 409 # else
 410 _GL_CXXALIAS_SYS (fscanf, int, (FILE *stream, const char *format, ...));
 411 # endif
 412 _GL_CXXALIASWARN (fscanf);
 413 #endif
 414
 415
 416 /* Set up the following warnings, based on which modules are in use.
 417    GNU Coding Standards discourage the use of fseek, since it imposes
 418    an arbitrary limitation on some 32-bit hosts.  Remember that the
 419    fseek module depends on the fseeko module, so we only have three
 420    cases to consider:
 421
 422    1. The developer is not using either module.  Issue a warning under
 423    GNULIB_POSIXCHECK for both functions, to remind them that both
 424    functions have bugs on some systems.  _GL_NO_LARGE_FILES has no
 425    impact on this warning.
 426
 427    2. The developer is using both modules.  They may be unaware of the
 428    arbitrary limitations of fseek, so issue a warning under
 429    GNULIB_POSIXCHECK.  On the other hand, they may be using both
 430    modules intentionally, so the developer can define
 431    _GL_NO_LARGE_FILES in the compilation units where the use of fseek
 432    is safe, to silence the warning.
 433
 434    3. The developer is using the fseeko module, but not fseek.  Gnulib
 435    guarantees that fseek will still work around platform bugs in that
 436    case, but we presume that the developer is aware of the pitfalls of
 437    fseek and was trying to avoid it, so issue a warning even when
 438    GNULIB_POSIXCHECK is undefined.  Again, _GL_NO_LARGE_FILES can be
 439    defined to silence the warning in particular compilation units.
 440    In C++ compilations with GNULIB_NAMESPACE, in order to avoid that
 441    fseek gets defined as a macro, it is recommended that the developer
 442    uses the fseek module, even if he is not calling the fseek function.
 443
 444    Most gnulib clients that perform stream operations should fall into
 445    category 3.  */
 446
 447 #if @GNULIB_FSEEK@
 448 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
 449 #  define _GL_FSEEK_WARN /* Category 2, above.  */
 450 #  undef fseek
 451 # endif
 452 # if @REPLACE_FSEEK@
 453 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 454 #   undef fseek
 455 #   define fseek rpl_fseek
 456 #  endif
 457 _GL_FUNCDECL_RPL (fseek, int, (FILE *fp, long offset, int whence)
 458                               _GL_ARG_NONNULL ((1)));
 459 _GL_CXXALIAS_RPL (fseek, int, (FILE *fp, long offset, int whence));
 460 # else
 461 _GL_CXXALIAS_SYS (fseek, int, (FILE *fp, long offset, int whence));
 462 # endif
 463 _GL_CXXALIASWARN (fseek);
 464 #endif
 465
 466 #if @GNULIB_FSEEKO@
 467 # if !@GNULIB_FSEEK@ && !defined _GL_NO_LARGE_FILES
 468 #  define _GL_FSEEK_WARN /* Category 3, above.  */
 469 #  undef fseek
 470 # endif
 471 # if @REPLACE_FSEEKO@
 472 /* Provide an fseeko function that is aware of a preceding fflush(), and which
 473    detects pipes.  */
 474 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 475 #   undef fseeko
 476 #   define fseeko rpl_fseeko
 477 #  endif
 478 _GL_FUNCDECL_RPL (fseeko, int, (FILE *fp, off_t offset, int whence)
 479                                _GL_ARG_NONNULL ((1)));
 480 _GL_CXXALIAS_RPL (fseeko, int, (FILE *fp, off_t offset, int whence));
 481 # else
 482 #  if ! @HAVE_DECL_FSEEKO@
 483 _GL_FUNCDECL_SYS (fseeko, int, (FILE *fp, off_t offset, int whence)
 484                                _GL_ARG_NONNULL ((1)));
 485 #  endif
 486 _GL_CXXALIAS_SYS (fseeko, int, (FILE *fp, off_t offset, int whence));
 487 # endif
 488 _GL_CXXALIASWARN (fseeko);
 489 #elif defined GNULIB_POSIXCHECK
 490 # define _GL_FSEEK_WARN /* Category 1, above.  */
 491 # undef fseek
 492 # undef fseeko
 493 # if HAVE_RAW_DECL_FSEEKO
 494 _GL_WARN_ON_USE (fseeko, "fseeko is unportable - "
 495                  "use gnulib module fseeko for portability");
 496 # endif
 497 #endif
 498
 499 #ifdef _GL_FSEEK_WARN
 500 # undef _GL_FSEEK_WARN
 501 /* Here, either fseek is undefined (but C89 guarantees that it is
 502    declared), or it is defined as rpl_fseek (declared above).  */
 503 _GL_WARN_ON_USE (fseek, "fseek cannot handle files larger than 4 GB "
 504                  "on 32-bit platforms - "
 505                  "use fseeko function for handling of large files");
 506 #endif
 507
 508
 509 /* ftell, ftello.  See the comments on fseek/fseeko.  */
 510
 511 #if @GNULIB_FTELL@
 512 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
 513 #  define _GL_FTELL_WARN /* Category 2, above.  */
 514 #  undef ftell
 515 # endif
 516 # if @REPLACE_FTELL@
 517 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 518 #   undef ftell
 519 #   define ftell rpl_ftell
 520 #  endif
 521 _GL_FUNCDECL_RPL (ftell, long, (FILE *fp) _GL_ARG_NONNULL ((1)));
 522 _GL_CXXALIAS_RPL (ftell, long, (FILE *fp));
 523 # else
 524 _GL_CXXALIAS_SYS (ftell, long, (FILE *fp));
 525 # endif
 526 _GL_CXXALIASWARN (ftell);
 527 #endif
 528
 529 #if @GNULIB_FTELLO@
 530 # if !@GNULIB_FTELL@ && !defined _GL_NO_LARGE_FILES
 531 #  define _GL_FTELL_WARN /* Category 3, above.  */
 532 #  undef ftell
 533 # endif
 534 # if @REPLACE_FTELLO@
 535 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 536 #   undef ftello
 537 #   define ftello rpl_ftello
 538 #  endif
 539 _GL_FUNCDECL_RPL (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
 540 _GL_CXXALIAS_RPL (ftello, off_t, (FILE *fp));
 541 # else
 542 #  if ! @HAVE_DECL_FTELLO@
 543 _GL_FUNCDECL_SYS (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
 544 #  endif
 545 _GL_CXXALIAS_SYS (ftello, off_t, (FILE *fp));
 546 # endif
 547 _GL_CXXALIASWARN (ftello);
 548 #elif defined GNULIB_POSIXCHECK
 549 # define _GL_FTELL_WARN /* Category 1, above.  */
 550 # undef ftell
 551 # undef ftello
 552 # if HAVE_RAW_DECL_FTELLO
 553 _GL_WARN_ON_USE (ftello, "ftello is unportable - "
 554                  "use gnulib module ftello for portability");
 555 # endif
 556 #endif
 557
 558 #ifdef _GL_FTELL_WARN
 559 # undef _GL_FTELL_WARN
 560 /* Here, either ftell is undefined (but C89 guarantees that it is
 561    declared), or it is defined as rpl_ftell (declared above).  */
 562 _GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
 563                  "on 32-bit platforms - "
 564                  "use ftello function for handling of large files");
 565 #endif
 566
 567
 568 #if @GNULIB_FWRITE@
 569 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 570 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 571 #   undef fwrite
 572 #   define fwrite rpl_fwrite
 573 #  endif
 574 _GL_FUNCDECL_RPL (fwrite, size_t,
 575                   (const void *ptr, size_t s, size_t n, FILE *stream)
 576                   _GL_ARG_NONNULL ((1, 4)));
 577 _GL_CXXALIAS_RPL (fwrite, size_t,
 578                   (const void *ptr, size_t s, size_t n, FILE *stream));
 579 # else
 580 _GL_CXXALIAS_SYS (fwrite, size_t,
 581                   (const void *ptr, size_t s, size_t n, FILE *stream));
 582
 583 /* Work around glibc bug 11959
 584    <http://sources.redhat.com/bugzilla/show_bug.cgi?id=11959>,
 585    which sometimes causes an unwanted diagnostic for fwrite calls.
 586    This affects only function declaration attributes, so it's not
 587    needed for C++.  */
 588 #  if !defined __cplusplus && 0 < __USE_FORTIFY_LEVEL
 589 _GL_STDIO_INLINE size_t _GL_ARG_NONNULL ((1, 4))
 590 rpl_fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
 591 {
 592   size_t r = fwrite (ptr, s, n, stream);
 593   (void) r;
 594   return r;
 595 }
 596 #   undef fwrite
 597 #   define fwrite rpl_fwrite
 598 #  endif
 599 # endif
 600 _GL_CXXALIASWARN (fwrite);
 601 #endif
 602
 603 #if @GNULIB_GETC@
 604 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 605 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 606 #   undef getc
 607 #   define getc rpl_fgetc
 608 #  endif
 609 _GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 610 _GL_CXXALIAS_RPL_1 (getc, rpl_fgetc, int, (FILE *stream));
 611 # else
 612 _GL_CXXALIAS_SYS (getc, int, (FILE *stream));
 613 # endif
 614 _GL_CXXALIASWARN (getc);
 615 #endif
 616
 617 #if @GNULIB_GETCHAR@
 618 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 619 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 620 #   undef getchar
 621 #   define getchar rpl_getchar
 622 #  endif
 623 _GL_FUNCDECL_RPL (getchar, int, (void));
 624 _GL_CXXALIAS_RPL (getchar, int, (void));
 625 # else
 626 _GL_CXXALIAS_SYS (getchar, int, (void));
 627 # endif
 628 _GL_CXXALIASWARN (getchar);
 629 #endif
 630
 631 #if @GNULIB_GETDELIM@
 632 /* Read input, up to (and including) the next occurrence of DELIMITER, from
 633    STREAM, store it in *LINEPTR (and NUL-terminate it).
 634    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
 635    bytes of space.  It is realloc'd as necessary.
 636    Return the number of bytes read and stored at *LINEPTR (not including the
 637    NUL terminator), or -1 on error or EOF.  */
 638 # if @REPLACE_GETDELIM@
 639 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 640 #   undef getdelim
 641 #   define getdelim rpl_getdelim
 642 #  endif
 643 _GL_FUNCDECL_RPL (getdelim, ssize_t,
 644                   (char **lineptr, size_t *linesize, int delimiter,
 645                    FILE *stream)
 646                   _GL_ARG_NONNULL ((1, 2, 4)));
 647 _GL_CXXALIAS_RPL (getdelim, ssize_t,
 648                   (char **lineptr, size_t *linesize, int delimiter,
 649                    FILE *stream));
 650 # else
 651 #  if !@HAVE_DECL_GETDELIM@
 652 _GL_FUNCDECL_SYS (getdelim, ssize_t,
 653                   (char **lineptr, size_t *linesize, int delimiter,
 654                    FILE *stream)
 655                   _GL_ARG_NONNULL ((1, 2, 4)));
 656 #  endif
 657 _GL_CXXALIAS_SYS (getdelim, ssize_t,
 658                   (char **lineptr, size_t *linesize, int delimiter,
 659                    FILE *stream));
 660 # endif
 661 _GL_CXXALIASWARN (getdelim);
 662 #elif defined GNULIB_POSIXCHECK
 663 # undef getdelim
 664 # if HAVE_RAW_DECL_GETDELIM
 665 _GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
 666                  "use gnulib module getdelim for portability");
 667 # endif
 668 #endif
 669
 670 #if @GNULIB_GETLINE@
 671 /* Read a line, up to (and including) the next newline, from STREAM, store it
 672    in *LINEPTR (and NUL-terminate it).
 673    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
 674    bytes of space.  It is realloc'd as necessary.
 675    Return the number of bytes read and stored at *LINEPTR (not including the
 676    NUL terminator), or -1 on error or EOF.  */
 677 # if @REPLACE_GETLINE@
 678 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 679 #   undef getline
 680 #   define getline rpl_getline
 681 #  endif
 682 _GL_FUNCDECL_RPL (getline, ssize_t,
 683                   (char **lineptr, size_t *linesize, FILE *stream)
 684                   _GL_ARG_NONNULL ((1, 2, 3)));
 685 _GL_CXXALIAS_RPL (getline, ssize_t,
 686                   (char **lineptr, size_t *linesize, FILE *stream));
 687 # else
 688 #  if !@HAVE_DECL_GETLINE@
 689 _GL_FUNCDECL_SYS (getline, ssize_t,
 690                   (char **lineptr, size_t *linesize, FILE *stream)
 691                   _GL_ARG_NONNULL ((1, 2, 3)));
 692 #  endif
 693 _GL_CXXALIAS_SYS (getline, ssize_t,
 694                   (char **lineptr, size_t *linesize, FILE *stream));
 695 # endif
 696 # if @HAVE_DECL_GETLINE@
 697 _GL_CXXALIASWARN (getline);
 698 # endif
 699 #elif defined GNULIB_POSIXCHECK
 700 # undef getline
 701 # if HAVE_RAW_DECL_GETLINE
 702 _GL_WARN_ON_USE (getline, "getline is unportable - "
 703                  "use gnulib module getline for portability");
 704 # endif
 705 #endif
 706
 707 /* It is very rare that the developer ever has full control of stdin,
 708    so any use of gets warrants an unconditional warning; besides, C11
 709    removed it.  */
 710 #undef gets
 711 #if HAVE_RAW_DECL_GETS
 712 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
 713 #endif
 714
 715
 716 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
 717 struct obstack;
 718 /* Grow an obstack with formatted output.  Return the number of
 719    bytes added to OBS.  No trailing nul byte is added, and the
 720    object should be closed with obstack_finish before use.  Upon
 721    memory allocation error, call obstack_alloc_failed_handler.  Upon
 722    other error, return -1.  */
 723 # if @REPLACE_OBSTACK_PRINTF@
 724 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 725 #   define obstack_printf rpl_obstack_printf
 726 #  endif
 727 _GL_FUNCDECL_RPL (obstack_printf, int,
 728                   (struct obstack *obs, const char *format, ...)
 729                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 730                   _GL_ARG_NONNULL ((1, 2)));
 731 _GL_CXXALIAS_RPL (obstack_printf, int,
 732                   (struct obstack *obs, const char *format, ...));
 733 # else
 734 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 735 _GL_FUNCDECL_SYS (obstack_printf, int,
 736                   (struct obstack *obs, const char *format, ...)
 737                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
 738                   _GL_ARG_NONNULL ((1, 2)));
 739 #  endif
 740 _GL_CXXALIAS_SYS (obstack_printf, int,
 741                   (struct obstack *obs, const char *format, ...));
 742 # endif
 743 _GL_CXXALIASWARN (obstack_printf);
 744 # if @REPLACE_OBSTACK_PRINTF@
 745 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 746 #   define obstack_vprintf rpl_obstack_vprintf
 747 #  endif
 748 _GL_FUNCDECL_RPL (obstack_vprintf, int,
 749                   (struct obstack *obs, const char *format, va_list args)
 750                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
 751                   _GL_ARG_NONNULL ((1, 2)));
 752 _GL_CXXALIAS_RPL (obstack_vprintf, int,
 753                   (struct obstack *obs, const char *format, va_list args));
 754 # else
 755 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 756 _GL_FUNCDECL_SYS (obstack_vprintf, int,
 757                   (struct obstack *obs, const char *format, va_list args)
 758                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
 759                   _GL_ARG_NONNULL ((1, 2)));
 760 #  endif
 761 _GL_CXXALIAS_SYS (obstack_vprintf, int,
 762                   (struct obstack *obs, const char *format, va_list args));
 763 # endif
 764 _GL_CXXALIASWARN (obstack_vprintf);
 765 #endif
 766
 767 #if @GNULIB_PCLOSE@
 768 # if !@HAVE_PCLOSE@
 769 _GL_FUNCDECL_SYS (pclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
 770 # endif
 771 _GL_CXXALIAS_SYS (pclose, int, (FILE *stream));
 772 _GL_CXXALIASWARN (pclose);
 773 #elif defined GNULIB_POSIXCHECK
 774 # undef pclose
 775 # if HAVE_RAW_DECL_PCLOSE
 776 _GL_WARN_ON_USE (pclose, "pclose is unportable - "
 777                  "use gnulib module pclose for more portability");
 778 # endif
 779 #endif
 780
 781 #if @GNULIB_PERROR@
 782 /* Print a message to standard error, describing the value of ERRNO,
 783    (if STRING is not NULL and not empty) prefixed with STRING and ": ",
 784    and terminated with a newline.  */
 785 # if @REPLACE_PERROR@
 786 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 787 #   define perror rpl_perror
 788 #  endif
 789 _GL_FUNCDECL_RPL (perror, void, (const char *string));
 790 _GL_CXXALIAS_RPL (perror, void, (const char *string));
 791 # else
 792 _GL_CXXALIAS_SYS (perror, void, (const char *string));
 793 # endif
 794 _GL_CXXALIASWARN (perror);
 795 #elif defined GNULIB_POSIXCHECK
 796 # undef perror
 797 /* Assume perror is always declared.  */
 798 _GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
 799                  "use gnulib module perror for portability");
 800 #endif
 801
 802 #if @GNULIB_POPEN@
 803 # if @REPLACE_POPEN@
 804 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 805 #   undef popen
 806 #   define popen rpl_popen
 807 #  endif
 808 _GL_FUNCDECL_RPL (popen, FILE *, (const char *cmd, const char *mode)
 809                                  _GL_ARG_NONNULL ((1, 2)));
 810 _GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode));
 811 # else
 812 #  if !@HAVE_POPEN@
 813 _GL_FUNCDECL_SYS (popen, FILE *, (const char *cmd, const char *mode)
 814                                  _GL_ARG_NONNULL ((1, 2)));
 815 #  endif
 816 _GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode));
 817 # endif
 818 _GL_CXXALIASWARN (popen);
 819 #elif defined GNULIB_POSIXCHECK
 820 # undef popen
 821 # if HAVE_RAW_DECL_POPEN
 822 _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
 823                  "use gnulib module popen or pipe for more portability");
 824 # endif
 825 #endif
 826
 827 #if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
 828 # if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
 829      || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 830 #  if defined __GNUC__
 831 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 832 /* Don't break __attribute__((format(printf,M,N))).  */
 833 #    define printf __printf__
 834 #   endif
 835 #   if @GNULIB_PRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 836 _GL_FUNCDECL_RPL_1 (__printf__, int,
 837                     (const char *format, ...)
 838                     __asm__ (@ASM_SYMBOL_PREFIX@
 839                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
 840                     _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
 841                     _GL_ARG_NONNULL ((1)));
 842 #   else
 843 _GL_FUNCDECL_RPL_1 (__printf__, int,
 844                     (const char *format, ...)
 845                     __asm__ (@ASM_SYMBOL_PREFIX@
 846                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
 847                     _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 2)
 848                     _GL_ARG_NONNULL ((1)));
 849 #   endif
 850 _GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
 851 #  else
 852 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 853 #    define printf rpl_printf
 854 #   endif
 855 _GL_FUNCDECL_RPL (printf, int,
 856                   (const char *format, ...)
 857                   _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
 858                   _GL_ARG_NONNULL ((1)));
 859 _GL_CXXALIAS_RPL (printf, int, (const char *format, ...));
 860 #  endif
 861 #  define GNULIB_overrides_printf 1
 862 # else
 863 _GL_CXXALIAS_SYS (printf, int, (const char *format, ...));
 864 # endif
 865 _GL_CXXALIASWARN (printf);
 866 #endif
 867 #if !@GNULIB_PRINTF_POSIX@ && defined GNULIB_POSIXCHECK
 868 # if !GNULIB_overrides_printf
 869 #  undef printf
 870 # endif
 871 /* Assume printf is always declared.  */
 872 _GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
 873                  "use gnulib module printf-posix for portable "
 874                  "POSIX compliance");
 875 #endif
 876
 877 #if @GNULIB_PUTC@
 878 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 879 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 880 #   undef putc
 881 #   define putc rpl_fputc
 882 #  endif
 883 _GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
 884 _GL_CXXALIAS_RPL_1 (putc, rpl_fputc, int, (int c, FILE *stream));
 885 # else
 886 _GL_CXXALIAS_SYS (putc, int, (int c, FILE *stream));
 887 # endif
 888 _GL_CXXALIASWARN (putc);
 889 #endif
 890
 891 #if @GNULIB_PUTCHAR@
 892 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 893 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 894 #   undef putchar
 895 #   define putchar rpl_putchar
 896 #  endif
 897 _GL_FUNCDECL_RPL (putchar, int, (int c));
 898 _GL_CXXALIAS_RPL (putchar, int, (int c));
 899 # else
 900 _GL_CXXALIAS_SYS (putchar, int, (int c));
 901 # endif
 902 _GL_CXXALIASWARN (putchar);
 903 #endif
 904
 905 #if @GNULIB_PUTS@
 906 # if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 907 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 908 #   undef puts
 909 #   define puts rpl_puts
 910 #  endif
 911 _GL_FUNCDECL_RPL (puts, int, (const char *string) _GL_ARG_NONNULL ((1)));
 912 _GL_CXXALIAS_RPL (puts, int, (const char *string));
 913 # else
 914 _GL_CXXALIAS_SYS (puts, int, (const char *string));
 915 # endif
 916 _GL_CXXALIASWARN (puts);
 917 #endif
 918
 919 #if @GNULIB_REMOVE@
 920 # if @REPLACE_REMOVE@
 921 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 922 #   undef remove
 923 #   define remove rpl_remove
 924 #  endif
 925 _GL_FUNCDECL_RPL (remove, int, (const char *name) _GL_ARG_NONNULL ((1)));
 926 _GL_CXXALIAS_RPL (remove, int, (const char *name));
 927 # else
 928 _GL_CXXALIAS_SYS (remove, int, (const char *name));
 929 # endif
 930 _GL_CXXALIASWARN (remove);
 931 #elif defined GNULIB_POSIXCHECK
 932 # undef remove
 933 /* Assume remove is always declared.  */
 934 _GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
 935                  "use gnulib module remove for more portability");
 936 #endif
 937
 938 #if @GNULIB_RENAME@
 939 # if @REPLACE_RENAME@
 940 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 941 #   undef rename
 942 #   define rename rpl_rename
 943 #  endif
 944 _GL_FUNCDECL_RPL (rename, int,
 945                   (const char *old_filename, const char *new_filename)
 946                   _GL_ARG_NONNULL ((1, 2)));
 947 _GL_CXXALIAS_RPL (rename, int,
 948                   (const char *old_filename, const char *new_filename));
 949 # else
 950 _GL_CXXALIAS_SYS (rename, int,
 951                   (const char *old_filename, const char *new_filename));
 952 # endif
 953 _GL_CXXALIASWARN (rename);
 954 #elif defined GNULIB_POSIXCHECK
 955 # undef rename
 956 /* Assume rename is always declared.  */
 957 _GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
 958                  "use gnulib module rename for more portability");
 959 #endif
 960
 961 #if @GNULIB_RENAMEAT@
 962 # if @REPLACE_RENAMEAT@
 963 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 964 #   undef renameat
 965 #   define renameat rpl_renameat
 966 #  endif
 967 _GL_FUNCDECL_RPL (renameat, int,
 968                   (int fd1, char const *file1, int fd2, char const *file2)
 969                   _GL_ARG_NONNULL ((2, 4)));
 970 _GL_CXXALIAS_RPL (renameat, int,
 971                   (int fd1, char const *file1, int fd2, char const *file2));
 972 # else
 973 #  if !@HAVE_RENAMEAT@
 974 _GL_FUNCDECL_SYS (renameat, int,
 975                   (int fd1, char const *file1, int fd2, char const *file2)
 976                   _GL_ARG_NONNULL ((2, 4)));
 977 #  endif
 978 _GL_CXXALIAS_SYS (renameat, int,
 979                   (int fd1, char const *file1, int fd2, char const *file2));
 980 # endif
 981 _GL_CXXALIASWARN (renameat);
 982 #elif defined GNULIB_POSIXCHECK
 983 # undef renameat
 984 # if HAVE_RAW_DECL_RENAMEAT
 985 _GL_WARN_ON_USE (renameat, "renameat is not portable - "
 986                  "use gnulib module renameat for portability");
 987 # endif
 988 #endif
 989
 990 #if @GNULIB_SCANF@
 991 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
 992 #  if defined __GNUC__
 993 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 994 #    undef scanf
 995 /* Don't break __attribute__((format(scanf,M,N))).  */
 996 #    define scanf __scanf__
 997 #   endif
 998 _GL_FUNCDECL_RPL_1 (__scanf__, int,
 999                     (const char *format, ...)
1000                     __asm__ (@ASM_SYMBOL_PREFIX@
1001                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_scanf))
1002                     _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
1003                     _GL_ARG_NONNULL ((1)));
1004 _GL_CXXALIAS_RPL_1 (scanf, __scanf__, int, (const char *format, ...));
1005 #  else
1006 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1007 #    undef scanf
1008 #    define scanf rpl_scanf
1009 #   endif
1010 _GL_FUNCDECL_RPL (scanf, int, (const char *format, ...)
1011                               _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
1012                               _GL_ARG_NONNULL ((1)));
1013 _GL_CXXALIAS_RPL (scanf, int, (const char *format, ...));
1014 #  endif
1015 # else
1016 _GL_CXXALIAS_SYS (scanf, int, (const char *format, ...));
1017 # endif
1018 _GL_CXXALIASWARN (scanf);
1019 #endif
1020
1021 #if @GNULIB_SNPRINTF@
1022 # if @REPLACE_SNPRINTF@
1023 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1024 #   define snprintf rpl_snprintf
1025 #  endif
1026 _GL_FUNCDECL_RPL (snprintf, int,
1027                   (char *str, size_t size, const char *format, ...)
1028                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
1029                   _GL_ARG_NONNULL ((3)));
1030 _GL_CXXALIAS_RPL (snprintf, int,
1031                   (char *str, size_t size, const char *format, ...));
1032 # else
1033 #  if !@HAVE_DECL_SNPRINTF@
1034 _GL_FUNCDECL_SYS (snprintf, int,
1035                   (char *str, size_t size, const char *format, ...)
1036                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
1037                   _GL_ARG_NONNULL ((3)));
1038 #  endif
1039 _GL_CXXALIAS_SYS (snprintf, int,
1040                   (char *str, size_t size, const char *format, ...));
1041 # endif
1042 _GL_CXXALIASWARN (snprintf);
1043 #elif defined GNULIB_POSIXCHECK
1044 # undef snprintf
1045 # if HAVE_RAW_DECL_SNPRINTF
1046 _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
1047                  "use gnulib module snprintf for portability");
1048 # endif
1049 #endif
1050
1051 /* Some people would argue that all sprintf uses should be warned about
1052    (for example, OpenBSD issues a link warning for it),
1053    since it can cause security holes due to buffer overruns.
1054    However, we believe that sprintf can be used safely, and is more
1055    efficient than snprintf in those safe cases; and as proof of our
1056    belief, we use sprintf in several gnulib modules.  So this header
1057    intentionally avoids adding a warning to sprintf except when
1058    GNULIB_POSIXCHECK is defined.  */
1059
1060 #if @GNULIB_SPRINTF_POSIX@
1061 # if @REPLACE_SPRINTF@
1062 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1063 #   define sprintf rpl_sprintf
1064 #  endif
1065 _GL_FUNCDECL_RPL (sprintf, int, (char *str, const char *format, ...)
1066                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1067                                 _GL_ARG_NONNULL ((1, 2)));
1068 _GL_CXXALIAS_RPL (sprintf, int, (char *str, const char *format, ...));
1069 # else
1070 _GL_CXXALIAS_SYS (sprintf, int, (char *str, const char *format, ...));
1071 # endif
1072 _GL_CXXALIASWARN (sprintf);
1073 #elif defined GNULIB_POSIXCHECK
1074 # undef sprintf
1075 /* Assume sprintf is always declared.  */
1076 _GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
1077                  "use gnulib module sprintf-posix for portable "
1078                  "POSIX compliance");
1079 #endif
1080
1081 #if @GNULIB_TMPFILE@
1082 # if @REPLACE_TMPFILE@
1083 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1084 #   define tmpfile rpl_tmpfile
1085 #  endif
1086 _GL_FUNCDECL_RPL (tmpfile, FILE *, (void));
1087 _GL_CXXALIAS_RPL (tmpfile, FILE *, (void));
1088 # else
1089 _GL_CXXALIAS_SYS (tmpfile, FILE *, (void));
1090 # endif
1091 _GL_CXXALIASWARN (tmpfile);
1092 #elif defined GNULIB_POSIXCHECK
1093 # undef tmpfile
1094 # if HAVE_RAW_DECL_TMPFILE
1095 _GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
1096                  "use gnulib module tmpfile for portability");
1097 # endif
1098 #endif
1099
1100 #if @GNULIB_VASPRINTF@
1101 /* Write formatted output to a string dynamically allocated with malloc().
1102    If the memory allocation succeeds, store the address of the string in
1103    *RESULT and return the number of resulting bytes, excluding the trailing
1104    NUL.  Upon memory allocation error, or some other error, return -1.  */
1105 # if @REPLACE_VASPRINTF@
1106 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1107 #   define asprintf rpl_asprintf
1108 #  endif
1109 _GL_FUNCDECL_RPL (asprintf, int,
1110                   (char **result, const char *format, ...)
1111                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1112                   _GL_ARG_NONNULL ((1, 2)));
1113 _GL_CXXALIAS_RPL (asprintf, int,
1114                   (char **result, const char *format, ...));
1115 # else
1116 #  if !@HAVE_VASPRINTF@
1117 _GL_FUNCDECL_SYS (asprintf, int,
1118                   (char **result, const char *format, ...)
1119                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
1120                   _GL_ARG_NONNULL ((1, 2)));
1121 #  endif
1122 _GL_CXXALIAS_SYS (asprintf, int,
1123                   (char **result, const char *format, ...));
1124 # endif
1125 _GL_CXXALIASWARN (asprintf);
1126 # if @REPLACE_VASPRINTF@
1127 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1128 #   define vasprintf rpl_vasprintf
1129 #  endif
1130 _GL_FUNCDECL_RPL (vasprintf, int,
1131                   (char **result, const char *format, va_list args)
1132                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1133                   _GL_ARG_NONNULL ((1, 2)));
1134 _GL_CXXALIAS_RPL (vasprintf, int,
1135                   (char **result, const char *format, va_list args));
1136 # else
1137 #  if !@HAVE_VASPRINTF@
1138 _GL_FUNCDECL_SYS (vasprintf, int,
1139                   (char **result, const char *format, va_list args)
1140                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1141                   _GL_ARG_NONNULL ((1, 2)));
1142 #  endif
1143 _GL_CXXALIAS_SYS (vasprintf, int,
1144                   (char **result, const char *format, va_list args));
1145 # endif
1146 _GL_CXXALIASWARN (vasprintf);
1147 #endif
1148
1149 #if @GNULIB_VDPRINTF@
1150 # if @REPLACE_VDPRINTF@
1151 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1152 #   define vdprintf rpl_vdprintf
1153 #  endif
1154 _GL_FUNCDECL_RPL (vdprintf, int, (int fd, const char *format, va_list args)
1155                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1156                                  _GL_ARG_NONNULL ((2)));
1157 _GL_CXXALIAS_RPL (vdprintf, int, (int fd, const char *format, va_list args));
1158 # else
1159 #  if !@HAVE_VDPRINTF@
1160 _GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
1161                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1162                                  _GL_ARG_NONNULL ((2)));
1163 #  endif
1164 /* Need to cast, because on Solaris, the third parameter will likely be
1165                                                     __va_list args.  */
1166 _GL_CXXALIAS_SYS_CAST (vdprintf, int,
1167                        (int fd, const char *format, va_list args));
1168 # endif
1169 _GL_CXXALIASWARN (vdprintf);
1170 #elif defined GNULIB_POSIXCHECK
1171 # undef vdprintf
1172 # if HAVE_RAW_DECL_VDPRINTF
1173 _GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
1174                  "use gnulib module vdprintf for portability");
1175 # endif
1176 #endif
1177
1178 #if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
1179 # if (@GNULIB_VFPRINTF_POSIX@ && @REPLACE_VFPRINTF@) \
1180      || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
1181 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1182 #   define vfprintf rpl_vfprintf
1183 #  endif
1184 #  define GNULIB_overrides_vfprintf 1
1185 #  if @GNULIB_VFPRINTF_POSIX@
1186 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
1187                                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1188                                  _GL_ARG_NONNULL ((1, 2)));
1189 #  else
1190 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
1191                                  _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 0)
1192                                  _GL_ARG_NONNULL ((1, 2)));
1193 #  endif
1194 _GL_CXXALIAS_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args));
1195 # else
1196 /* Need to cast, because on Solaris, the third parameter is
1197                                                       __va_list args
1198    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1199 _GL_CXXALIAS_SYS_CAST (vfprintf, int,
1200                        (FILE *fp, const char *format, va_list args));
1201 # endif
1202 _GL_CXXALIASWARN (vfprintf);
1203 #endif
1204 #if !@GNULIB_VFPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
1205 # if !GNULIB_overrides_vfprintf
1206 #  undef vfprintf
1207 # endif
1208 /* Assume vfprintf is always declared.  */
1209 _GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
1210                  "use gnulib module vfprintf-posix for portable "
1211                       "POSIX compliance");
1212 #endif
1213
1214 #if @GNULIB_VFSCANF@
1215 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
1216 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1217 #   undef vfscanf
1218 #   define vfscanf rpl_vfscanf
1219 #  endif
1220 _GL_FUNCDECL_RPL (vfscanf, int,
1221                   (FILE *stream, const char *format, va_list args)
1222                   _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 0)
1223                   _GL_ARG_NONNULL ((1, 2)));
1224 _GL_CXXALIAS_RPL (vfscanf, int,
1225                   (FILE *stream, const char *format, va_list args));
1226 # else
1227 _GL_CXXALIAS_SYS (vfscanf, int,
1228                   (FILE *stream, const char *format, va_list args));
1229 # endif
1230 _GL_CXXALIASWARN (vfscanf);
1231 #endif
1232
1233 #if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VPRINTF@
1234 # if (@GNULIB_VPRINTF_POSIX@ && @REPLACE_VPRINTF@) \
1235      || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
1236 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1237 #   define vprintf rpl_vprintf
1238 #  endif
1239 #  define GNULIB_overrides_vprintf 1
1240 #  if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
1241 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
1242                                 _GL_ATTRIBUTE_FORMAT_PRINTF (1, 0)
1243                                 _GL_ARG_NONNULL ((1)));
1244 #  else
1245 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
1246                                 _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 0)
1247                                 _GL_ARG_NONNULL ((1)));
1248 #  endif
1249 _GL_CXXALIAS_RPL (vprintf, int, (const char *format, va_list args));
1250 # else
1251 /* Need to cast, because on Solaris, the second parameter is
1252                                                           __va_list args
1253    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1254 _GL_CXXALIAS_SYS_CAST (vprintf, int, (const char *format, va_list args));
1255 # endif
1256 _GL_CXXALIASWARN (vprintf);
1257 #endif
1258 #if !@GNULIB_VPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
1259 # if !GNULIB_overrides_vprintf
1260 #  undef vprintf
1261 # endif
1262 /* Assume vprintf is always declared.  */
1263 _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
1264                  "use gnulib module vprintf-posix for portable "
1265                  "POSIX compliance");
1266 #endif
1267
1268 #if @GNULIB_VSCANF@
1269 # if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
1270 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1271 #   undef vscanf
1272 #   define vscanf rpl_vscanf
1273 #  endif
1274 _GL_FUNCDECL_RPL (vscanf, int, (const char *format, va_list args)
1275                                _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 0)
1276                                _GL_ARG_NONNULL ((1)));
1277 _GL_CXXALIAS_RPL (vscanf, int, (const char *format, va_list args));
1278 # else
1279 _GL_CXXALIAS_SYS (vscanf, int, (const char *format, va_list args));
1280 # endif
1281 _GL_CXXALIASWARN (vscanf);
1282 #endif
1283
1284 #if @GNULIB_VSNPRINTF@
1285 # if @REPLACE_VSNPRINTF@
1286 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1287 #   define vsnprintf rpl_vsnprintf
1288 #  endif
1289 _GL_FUNCDECL_RPL (vsnprintf, int,
1290                   (char *str, size_t size, const char *format, va_list args)
1291                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
1292                   _GL_ARG_NONNULL ((3)));
1293 _GL_CXXALIAS_RPL (vsnprintf, int,
1294                   (char *str, size_t size, const char *format, va_list args));
1295 # else
1296 #  if !@HAVE_DECL_VSNPRINTF@
1297 _GL_FUNCDECL_SYS (vsnprintf, int,
1298                   (char *str, size_t size, const char *format, va_list args)
1299                   _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
1300                   _GL_ARG_NONNULL ((3)));
1301 #  endif
1302 _GL_CXXALIAS_SYS (vsnprintf, int,
1303                   (char *str, size_t size, const char *format, va_list args));
1304 # endif
1305 _GL_CXXALIASWARN (vsnprintf);
1306 #elif defined GNULIB_POSIXCHECK
1307 # undef vsnprintf
1308 # if HAVE_RAW_DECL_VSNPRINTF
1309 _GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
1310                  "use gnulib module vsnprintf for portability");
1311 # endif
1312 #endif
1313
1314 #if @GNULIB_VSPRINTF_POSIX@
1315 # if @REPLACE_VSPRINTF@
1316 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1317 #   define vsprintf rpl_vsprintf
1318 #  endif
1319 _GL_FUNCDECL_RPL (vsprintf, int,
1320                   (char *str, const char *format, va_list args)
1321                   _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
1322                   _GL_ARG_NONNULL ((1, 2)));
1323 _GL_CXXALIAS_RPL (vsprintf, int,
1324                   (char *str, const char *format, va_list args));
1325 # else
1326 /* Need to cast, because on Solaris, the third parameter is
1327                                                        __va_list args
1328    and GCC's fixincludes did not change this to __gnuc_va_list.  */
1329 _GL_CXXALIAS_SYS_CAST (vsprintf, int,
1330                        (char *str, const char *format, va_list args));
1331 # endif
1332 _GL_CXXALIASWARN (vsprintf);
1333 #elif defined GNULIB_POSIXCHECK
1334 # undef vsprintf
1335 /* Assume vsprintf is always declared.  */
1336 _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
1337                  "use gnulib module vsprintf-posix for portable "
1338                       "POSIX compliance");
1339 #endif
1340
1341 _GL_INLINE_HEADER_END
1342
1343 #endif /* _@GUARD_PREFIX@_STDIO_H */
1344 #endif /* _@GUARD_PREFIX@_STDIO_H */
1345 #endif