1 /* A GNU-like <stdio.h>.
3 Copyright (C) 2004, 2007-2010 Free Software Foundation, Inc.
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 2, or (at your option)
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.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
20 @PRAGMA_SYSTEM_HEADER@
23 #if defined __need_FILE || defined __need___FILE
24 /* Special invocation convention inside glibc header files. */
26 #@INCLUDE_NEXT@ @NEXT_STDIO_H@
29 /* Normal invocation convention. */
33 /* The include_next requires a split double-inclusion guard. */
34 #@INCLUDE_NEXT@ @NEXT_STDIO_H@
39 /* Get va_list. Needed on many systems, including glibc 2.8. */
44 /* Get off_t and ssize_t. Needed on many systems, including glibc 2.8. */
45 #include <sys/types.h>
48 /* The __attribute__ feature is available in gcc versions 2.5 and later.
49 The __-protected variants of the attributes 'format' and 'printf' are
50 accepted by gcc versions 2.6.4 (effectively 2.7) and later.
51 We enable __attribute__ only if these are supported too, because
52 gnulib and libintl do '#define printf __printf__' when they override
53 the 'printf' function. */
54 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
55 # define __attribute__(Spec) /* empty */
60 /* The definition of _GL_ARG_NONNULL is copied here. */
62 /* The definition of _GL_WARN_ON_USE is copied here. */
70 # if @REPLACE_DPRINTF@
71 # define dprintf rpl_dprintf
73 # if @REPLACE_DPRINTF@ || !@HAVE_DPRINTF@
74 extern int dprintf (int fd, const char *format, ...)
75 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((2));
77 #elif defined GNULIB_POSIXCHECK
79 # if HAVE_RAW_DECL_DPRINTF
80 _GL_WARN_ON_USE (dprintf, "dprintf is unportable - "
81 "use gnulib module dprintf for portability");
87 # define fclose rpl_fclose
88 /* Close STREAM and its underlying file descriptor. */
89 extern int fclose (FILE *stream) _GL_ARG_NONNULL ((1));
91 #elif defined GNULIB_POSIXCHECK
93 /* Assume fclose is always declared. */
94 _GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - "
95 "use gnulib module fclose for portable POSIX compliance");
100 # define fflush rpl_fflush
101 /* Flush all pending data on STREAM according to POSIX rules. Both
102 output and seekable input streams are supported.
103 Note! LOSS OF DATA can occur if fflush is applied on an input stream
104 that is _not_seekable_ or on an update stream that is _not_seekable_
105 and in which the most recent operation was input. Seekability can
106 be tested with lseek(fileno(fp),0,SEEK_CUR). */
107 extern int fflush (FILE *gl_stream);
109 #elif defined GNULIB_POSIXCHECK
111 /* Assume fflush is always declared. */
112 _GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
113 "use gnulib module fflush for portable POSIX compliance");
116 /* It is very rare that the developer ever has full control of stdin,
117 so any use of gets warrants an unconditional warning. Assume it is
118 always declared, since it is required by C89. */
120 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
125 # define fopen rpl_fopen
126 extern FILE * fopen (const char *filename, const char *mode)
127 _GL_ARG_NONNULL ((1, 2));
129 #elif defined GNULIB_POSIXCHECK
131 /* Assume fopen is always declared. */
132 _GL_WARN_ON_USE (fopen, "fopen on Win32 platforms is not POSIX compatible - "
133 "use gnulib module fopen for portability");
136 #if @GNULIB_FPRINTF_POSIX@
137 # if @REPLACE_FPRINTF@
138 # define fprintf rpl_fprintf
139 extern int fprintf (FILE *fp, const char *format, ...)
140 __attribute__ ((__format__ (__printf__, 2, 3)))
141 _GL_ARG_NONNULL ((1, 2));
143 #elif @GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
144 # define fprintf rpl_fprintf
145 extern int fprintf (FILE *fp, const char *format, ...)
146 __attribute__ ((__format__ (__printf__, 2, 3)))
147 _GL_ARG_NONNULL ((1, 2));
148 #elif defined GNULIB_POSIXCHECK
150 /* Assume fprintf is always declared. */
151 _GL_WARN_ON_USE (fprintf, "fprintf is not always POSIX compliant - "
152 "use gnulib module fprintf-posix for portable "
157 # if @REPLACE_FPURGE@
158 # define fpurge rpl_fpurge
160 # if @REPLACE_FPURGE@ || !@HAVE_DECL_FPURGE@
161 /* Discard all pending buffered I/O data on STREAM.
162 STREAM must not be wide-character oriented.
163 When discarding pending output, the file position is set back to where it
164 was before the write calls. When discarding pending input, the file
165 position is advanced to match the end of the previously read input.
166 Return 0 if successful. Upon error, return -1 and set errno. */
167 extern int fpurge (FILE *gl_stream) _GL_ARG_NONNULL ((1));
169 #elif defined GNULIB_POSIXCHECK
171 # if HAVE_RAW_DECL_FPURGE
172 _GL_WARN_ON_USE (fpurge, "fpurge is not always present - "
173 "use gnulib module fpurge for portability");
177 #if @GNULIB_FPUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
179 # define fputc rpl_fputc
180 extern int fputc (int c, FILE *stream) _GL_ARG_NONNULL ((2));
183 #if @GNULIB_FPUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
185 # define fputs rpl_fputs
186 extern int fputs (const char *string, FILE *stream) _GL_ARG_NONNULL ((1, 2));
190 # if @REPLACE_FREOPEN@
192 # define freopen rpl_freopen
193 extern FILE * freopen (const char *filename, const char *mode, FILE *stream)
194 _GL_ARG_NONNULL ((2, 3));
196 #elif defined GNULIB_POSIXCHECK
198 /* Assume freopen is always declared. */
199 _GL_WARN_ON_USE (freopen, "freopen on Win32 platforms is not POSIX compatible - "
200 "use gnulib module freopen for portability");
203 /* Set up the following warnings, based on which modules are in use.
204 GNU Coding Standards discourage the use of fseek, since it imposes
205 an arbitrary limitation on some 32-bit hosts. Remember that the
206 fseek module depends on the fseeko module, so we only have three
209 1. The developer is not using either module. Issue a warning under
210 GNULIB_POSIXCHECK for both functions, to remind them that both
211 functions have bugs on some systems. _GL_NO_LARGE_FILES has no
212 impact on this warning.
214 2. The developer is using both modules. They may be unaware of the
215 arbitrary limitations of fseek, so issue a warning under
216 GNULIB_POSIXCHECK. On the other hand, they may be using both
217 modules intentionally, so the developer can define
218 _GL_NO_LARGE_FILES in the compilation units where the use of fseek
219 is safe, to silence the warning.
221 3. The developer is using the fseeko module, but not fseek. Gnulib
222 guarantees that fseek will still work around platform bugs in that
223 case, but we presume that the developer is aware of the pitfalls of
224 fseek and was trying to avoid it, so issue a warning even when
225 GNULIB_POSIXCHECK is undefined. Again, _GL_NO_LARGE_FILES can be
226 defined to silence the warning in particular compilation units.
228 Most gnulib clients that perform stream operations should fall into
232 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
233 # define _GL_FSEEK_WARN /* Category 2, above. */
238 # define fseek rpl_fseek
239 extern int fseek (FILE *fp, long offset, int whence) _GL_ARG_NONNULL ((1));
244 # if !@GNULIB_FSEEK@ && !defined _GL_NO_LARGE_FILES
245 # define _GL_FSEEK_WARN /* Category 3, above. */
248 # if @REPLACE_FSEEKO@
249 /* Provide fseek, fseeko functions that are aware of a preceding
250 fflush(), and which detect pipes. */
252 # define fseeko rpl_fseeko
253 extern int fseeko (FILE *fp, off_t offset, int whence) _GL_ARG_NONNULL ((1));
256 # define fseek rpl_fseek
257 static inline int _GL_ARG_NONNULL ((1))
258 rpl_fseek (FILE *fp, long offset, int whence)
260 return fseeko (fp, offset, whence);
264 #elif defined GNULIB_POSIXCHECK
265 # define _GL_FSEEK_WARN /* Category 1, above. */
268 # if HAVE_RAW_DECL_FSEEKO
269 _GL_WARN_ON_USE (fseeko, "fseeko is unportable - "
270 "use gnulib module fseeko for portability");
274 #ifdef _GL_FSEEK_WARN
275 # undef _GL_FSEEK_WARN
276 /* Here, either fseek is undefined (but C89 guarantees that it is
277 declared), or it is defined as rpl_fseek (declared above). */
278 _GL_WARN_ON_USE (fseek, "fseek cannot handle files larger than 4 GB "
279 "on 32-bit platforms - "
280 "use fseeko function for handling of large files");
283 /* See the comments on fseek/fseeko. */
286 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
287 # define _GL_FTELL_WARN /* Category 2, above. */
292 # define ftell rpl_ftell
293 extern long ftell (FILE *fp) _GL_ARG_NONNULL ((1));
298 # if !@GNULIB_FTELL@ && !defined _GL_NO_LARGE_FILES
299 # define _GL_FTELL_WARN /* Category 3, above. */
302 # if @REPLACE_FTELLO@
304 # define ftello rpl_ftello
305 extern off_t ftello (FILE *fp) _GL_ARG_NONNULL ((1));
308 # define ftell rpl_ftell
309 static inline long _GL_ARG_NONNULL ((1))
316 #elif defined GNULIB_POSIXCHECK
317 # define _GL_FTELL_WARN /* Category 1, above. */
320 # if HAVE_RAW_DECL_FTELLO
321 _GL_WARN_ON_USE (ftello, "ftello is unportable - "
322 "use gnulib module ftello for portability");
326 #ifdef _GL_FTELL_WARN
327 # undef _GL_FTELL_WARN
328 /* Here, either ftell is undefined (but C89 guarantees that it is
329 declared), or it is defined as rpl_ftell (declared above). */
330 _GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
331 "on 32-bit platforms - "
332 "use ftello function for handling of large files");
335 #if @GNULIB_FWRITE@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
337 # define fwrite rpl_fwrite
338 extern size_t fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
339 _GL_ARG_NONNULL ((1, 4));
342 #if @GNULIB_GETDELIM@
343 # if @REPLACE_GETDELIM@
345 # define getdelim rpl_getdelim
347 # if !@HAVE_DECL_GETDELIM@ || @REPLACE_GETDELIM@
348 /* Read input, up to (and including) the next occurrence of DELIMITER, from
349 STREAM, store it in *LINEPTR (and NUL-terminate it).
350 *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
351 bytes of space. It is realloc'd as necessary.
352 Return the number of bytes read and stored at *LINEPTR (not including the
353 NUL terminator), or -1 on error or EOF. */
354 extern ssize_t getdelim (char **lineptr, size_t *linesize, int delimiter,
356 _GL_ARG_NONNULL ((1, 2, 4));
358 #elif defined GNULIB_POSIXCHECK
360 # if HAVE_RAW_DECL_GETDELIM
361 _GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
362 "use gnulib module getdelim for portability");
367 # if @REPLACE_GETLINE@
369 # define getline rpl_getline
371 # if !@HAVE_DECL_GETLINE@ || @REPLACE_GETLINE@
372 /* Read a line, up to (and including) the next newline, from STREAM, store it
373 in *LINEPTR (and NUL-terminate it).
374 *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
375 bytes of space. It is realloc'd as necessary.
376 Return the number of bytes read and stored at *LINEPTR (not including the
377 NUL terminator), or -1 on error or EOF. */
378 extern ssize_t getline (char **lineptr, size_t *linesize, FILE *stream)
379 _GL_ARG_NONNULL ((1, 2, 3));
381 #elif defined GNULIB_POSIXCHECK
383 # if HAVE_RAW_DECL_GETLINE
384 _GL_WARN_ON_USE (getline, "getline is unportable - "
385 "use gnulib module getline for portability");
389 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
390 # if @REPLACE_OBSTACK_PRINTF@
391 # define obstack_printf rpl_osbtack_printf
392 # define obstack_vprintf rpl_obstack_vprintf
394 # if @REPLACE_OBSTACK_PRINTF@ || !@HAVE_DECL_OBSTACK_PRINTF@
396 /* Grow an obstack with formatted output. Return the number of
397 bytes added to OBS. No trailing nul byte is added, and the
398 object should be closed with obstack_finish before use. Upon
399 memory allocation error, call obstack_alloc_failed_handler. Upon
400 other error, return -1. */
401 extern int obstack_printf (struct obstack *obs, const char *format, ...)
402 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((1, 2));
403 extern int obstack_vprintf (struct obstack *obs, const char *format,
405 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((1, 2));
410 # if @REPLACE_PERROR@
411 # define perror rpl_perror
412 /* Print a message to standard error, describing the value of ERRNO,
413 (if STRING is not NULL and not empty) prefixed with STRING and ": ",
414 and terminated with a newline. */
415 extern void perror (const char *string);
417 #elif defined GNULIB_POSIXCHECK
419 /* Assume perror is always declared. */
420 _GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
421 "use gnulib module perror for portability");
427 # define popen rpl_popen
428 extern FILE *popen (const char *cmd, const char *mode)
429 _GL_ARG_NONNULL ((1, 2));
431 #elif defined GNULIB_POSIXCHECK
433 # if HAVE_RAW_DECL_POPEN
434 _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
435 "use gnulib module popen or pipe for more portability");
439 #if @GNULIB_PRINTF_POSIX@
440 # if @REPLACE_PRINTF@
441 /* Don't break __attribute__((format(printf,M,N))). */
442 # define printf __printf__
443 extern int printf (const char *format, ...)
444 __attribute__ ((__format__ (__printf__, 1, 2))) _GL_ARG_NONNULL ((1));
446 #elif @GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
447 /* Don't break __attribute__((format(printf,M,N))). */
448 # define printf __printf__
449 extern int printf (const char *format, ...)
450 __attribute__ ((__format__ (__printf__, 1, 2))) _GL_ARG_NONNULL ((1));
451 #elif defined GNULIB_POSIXCHECK
453 /* Assume printf is always declared. */
454 _GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
455 "use gnulib module printf-posix for portable "
459 #if @GNULIB_PUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
461 # define putc rpl_fputc
462 extern int putc (int c, FILE *stream) _GL_ARG_NONNULL ((2));
465 #if @GNULIB_PUTCHAR@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
467 # define putchar rpl_putchar
468 extern int putchar (int c);
471 #if @GNULIB_PUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
473 # define puts rpl_puts
474 extern int puts (const char *string) _GL_ARG_NONNULL ((1));
478 # if @REPLACE_REMOVE@
480 # define remove rpl_remove
481 extern int remove (const char *name) _GL_ARG_NONNULL ((1));
483 #elif defined GNULIB_POSIXCHECK
485 /* Assume remove is always declared. */
486 _GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
487 "use gnulib module remove for more portability");
491 # if @REPLACE_RENAME@
493 # define rename rpl_rename
494 extern int rename (const char *old_filename, const char *new_filename)
495 _GL_ARG_NONNULL ((1, 2));
497 #elif defined GNULIB_POSIXCHECK
499 /* Assume rename is always declared. */
500 _GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
501 "use gnulib module rename for more portability");
504 #if @GNULIB_RENAMEAT@
505 # if @REPLACE_RENAMEAT@
507 # define renameat rpl_renameat
509 # if !@HAVE_RENAMEAT@ || @REPLACE_RENAMEAT@
510 extern int renameat (int fd1, char const *file1, int fd2, char const *file2)
511 _GL_ARG_NONNULL ((2, 4));
513 #elif defined GNULIB_POSIXCHECK
515 # if HAVE_RAW_DECL_RENAMEAT
516 _GL_WARN_ON_USE (renameat, "renameat is not portable - "
517 "use gnulib module renameat for portability");
521 #if @GNULIB_SNPRINTF@
522 # if @REPLACE_SNPRINTF@
523 # define snprintf rpl_snprintf
525 # if @REPLACE_SNPRINTF@ || !@HAVE_DECL_SNPRINTF@
526 extern int snprintf (char *str, size_t size, const char *format, ...)
527 __attribute__ ((__format__ (__printf__, 3, 4)))
528 _GL_ARG_NONNULL ((3));
530 #elif defined GNULIB_POSIXCHECK
532 # if HAVE_RAW_DECL_SNPRINTF
533 _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
534 "use gnulib module snprintf for portability");
538 /* Some people would argue that sprintf should be handled like gets
539 (for example, OpenBSD issues a link warning for both functions),
540 since both can cause security holes due to buffer overruns.
541 However, we believe that sprintf can be used safely, and is more
542 efficient than snprintf in those safe cases; and as proof of our
543 belief, we use sprintf in several gnulib modules. So this header
544 intentionally avoids adding a warning to sprintf except when
545 GNULIB_POSIXCHECK is defined. */
547 #if @GNULIB_SPRINTF_POSIX@
548 # if @REPLACE_SPRINTF@
549 # define sprintf rpl_sprintf
550 extern int sprintf (char *str, const char *format, ...)
551 __attribute__ ((__format__ (__printf__, 2, 3)))
552 _GL_ARG_NONNULL ((1, 2));
554 #elif defined GNULIB_POSIXCHECK
556 /* Assume sprintf is always declared. */
557 _GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
558 "use gnulib module sprintf-posix for portable "
562 #if @GNULIB_VASPRINTF@
563 # if @REPLACE_VASPRINTF@
564 # define asprintf rpl_asprintf
565 # define vasprintf rpl_vasprintf
567 # if @REPLACE_VASPRINTF@ || !@HAVE_VASPRINTF@
568 /* Write formatted output to a string dynamically allocated with malloc().
569 If the memory allocation succeeds, store the address of the string in
570 *RESULT and return the number of resulting bytes, excluding the trailing
571 NUL. Upon memory allocation error, or some other error, return -1. */
572 extern int asprintf (char **result, const char *format, ...)
573 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((1, 2));
574 extern int vasprintf (char **result, const char *format, va_list args)
575 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((1, 2));
579 #if @GNULIB_VDPRINTF@
580 # if @REPLACE_VDPRINTF@
581 # define vdprintf rpl_vdprintf
583 # if @REPLACE_VDPRINTF@ || !@HAVE_VDPRINTF@
584 extern int vdprintf (int fd, const char *format, va_list args)
585 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((2));
587 #elif defined GNULIB_POSIXCHECK
589 # if HAVE_RAW_DECL_VDPRINTF
590 _GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
591 "use gnulib module vdprintf for portability");
595 #if @GNULIB_VFPRINTF_POSIX@
596 # if @REPLACE_VFPRINTF@
597 # define vfprintf rpl_vfprintf
598 extern int vfprintf (FILE *fp, const char *format, va_list args)
599 __attribute__ ((__format__ (__printf__, 2, 0)))
600 _GL_ARG_NONNULL ((1, 2));
602 #elif @GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
603 # define vfprintf rpl_vfprintf
604 extern int vfprintf (FILE *fp, const char *format, va_list args)
605 __attribute__ ((__format__ (__printf__, 2, 0)))
606 _GL_ARG_NONNULL ((1, 2));
607 #elif defined GNULIB_POSIXCHECK
609 /* Assume vfprintf is always declared. */
610 _GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
611 "use gnulib module vfprintf-posix for portable "
615 #if @GNULIB_VPRINTF_POSIX@
616 # if @REPLACE_VPRINTF@
617 # define vprintf rpl_vprintf
618 extern int vprintf (const char *format, va_list args)
619 __attribute__ ((__format__ (__printf__, 1, 0))) _GL_ARG_NONNULL ((1));
621 #elif @GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
622 # define vprintf rpl_vprintf
623 extern int vprintf (const char *format, va_list args)
624 __attribute__ ((__format__ (__printf__, 1, 0))) _GL_ARG_NONNULL ((1));
625 #elif defined GNULIB_POSIXCHECK
627 /* Assume vprintf is always declared. */
628 _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
629 "use gnulib module vprintf-posix for portable "
633 #if @GNULIB_VSNPRINTF@
634 # if @REPLACE_VSNPRINTF@
635 # define vsnprintf rpl_vsnprintf
637 # if @REPLACE_VSNPRINTF@ || !@HAVE_DECL_VSNPRINTF@
638 extern int vsnprintf (char *str, size_t size, const char *format, va_list args)
639 __attribute__ ((__format__ (__printf__, 3, 0)))
640 _GL_ARG_NONNULL ((3));
642 #elif defined GNULIB_POSIXCHECK
644 # if HAVE_RAW_DECL_VSNPRINTF
645 _GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
646 "use gnulib module vsnprintf for portability");
650 #if @GNULIB_VSPRINTF_POSIX@
651 # if @REPLACE_VSPRINTF@
652 # define vsprintf rpl_vsprintf
653 extern int vsprintf (char *str, const char *format, va_list args)
654 __attribute__ ((__format__ (__printf__, 2, 0)))
655 _GL_ARG_NONNULL ((1, 2));
657 #elif defined GNULIB_POSIXCHECK
659 /* Assume vsprintf is always declared. */
660 _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
661 "use gnulib module vsprintf-posix for portable "
669 #endif /* _GL_STDIO_H */
670 #endif /* _GL_STDIO_H */