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_LINK_WARNING is copied here. */
62 /* The definition of _GL_ARG_NONNULL is copied here. */
64 /* The definition of _GL_WARN_ON_USE is copied here. */
72 # if @REPLACE_DPRINTF@
73 # define dprintf rpl_dprintf
75 # if @REPLACE_DPRINTF@ || !@HAVE_DPRINTF@
76 extern int dprintf (int fd, const char *format, ...)
77 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((2));
79 #elif defined GNULIB_POSIXCHECK
82 (GL_LINK_WARNING ("dprintf is unportable - " \
83 "use gnulib module dprintf for portability"), \
89 # define fclose rpl_fclose
90 /* Close STREAM and its underlying file descriptor. */
91 extern int fclose (FILE *stream) _GL_ARG_NONNULL ((1));
93 #elif defined GNULIB_POSIXCHECK
96 (GL_LINK_WARNING ("fclose is not always POSIX compliant - " \
97 "use gnulib module fclose for portable " \
98 "POSIX compliance"), \
103 # if @REPLACE_FFLUSH@
104 # define fflush rpl_fflush
105 /* Flush all pending data on STREAM according to POSIX rules. Both
106 output and seekable input streams are supported.
107 Note! LOSS OF DATA can occur if fflush is applied on an input stream
108 that is _not_seekable_ or on an update stream that is _not_seekable_
109 and in which the most recent operation was input. Seekability can
110 be tested with lseek(fileno(fp),0,SEEK_CUR). */
111 extern int fflush (FILE *gl_stream);
113 #elif defined GNULIB_POSIXCHECK
116 (GL_LINK_WARNING ("fflush is not always POSIX compliant - " \
117 "use gnulib module fflush for portable " \
118 "POSIX compliance"), \
122 /* It is very rare that the developer ever has full control of stdin,
123 so any use of gets warrants an unconditional warning. Assume it is
124 always declared, since it is required by C89. */
126 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
131 # define fopen rpl_fopen
132 extern FILE * fopen (const char *filename, const char *mode)
133 _GL_ARG_NONNULL ((1, 2));
135 #elif defined GNULIB_POSIXCHECK
137 # define fopen(f,m) \
138 (GL_LINK_WARNING ("fopen on Win32 platforms is not POSIX compatible - " \
139 "use gnulib module fopen for portability"), \
143 #if @GNULIB_FPRINTF_POSIX@
144 # if @REPLACE_FPRINTF@
145 # define fprintf rpl_fprintf
146 extern int fprintf (FILE *fp, const char *format, ...)
147 __attribute__ ((__format__ (__printf__, 2, 3)))
148 _GL_ARG_NONNULL ((1, 2));
150 #elif @GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
151 # define fprintf rpl_fprintf
152 extern int fprintf (FILE *fp, const char *format, ...)
153 __attribute__ ((__format__ (__printf__, 2, 3)))
154 _GL_ARG_NONNULL ((1, 2));
155 #elif defined GNULIB_POSIXCHECK
158 (GL_LINK_WARNING ("fprintf is not always POSIX compliant - " \
159 "use gnulib module fprintf-posix for portable " \
160 "POSIX compliance"), \
165 # if @REPLACE_FPURGE@
166 # define fpurge rpl_fpurge
168 # if @REPLACE_FPURGE@ || !@HAVE_DECL_FPURGE@
169 /* Discard all pending buffered I/O data on STREAM.
170 STREAM must not be wide-character oriented.
171 When discarding pending output, the file position is set back to where it
172 was before the write calls. When discarding pending input, the file
173 position is advanced to match the end of the previously read input.
174 Return 0 if successful. Upon error, return -1 and set errno. */
175 extern int fpurge (FILE *gl_stream) _GL_ARG_NONNULL ((1));
177 #elif defined GNULIB_POSIXCHECK
180 (GL_LINK_WARNING ("fpurge is not always present - " \
181 "use gnulib module fpurge for portability"), \
185 #if @GNULIB_FPUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
187 # define fputc rpl_fputc
188 extern int fputc (int c, FILE *stream) _GL_ARG_NONNULL ((2));
191 #if @GNULIB_FPUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
193 # define fputs rpl_fputs
194 extern int fputs (const char *string, FILE *stream) _GL_ARG_NONNULL ((1, 2));
198 # if @REPLACE_FREOPEN@
200 # define freopen rpl_freopen
201 extern FILE * freopen (const char *filename, const char *mode, FILE *stream)
202 _GL_ARG_NONNULL ((2, 3));
204 #elif defined GNULIB_POSIXCHECK
206 # define freopen(f,m,s) \
207 (GL_LINK_WARNING ("freopen on Win32 platforms is not POSIX compatible - " \
208 "use gnulib module freopen for portability"), \
212 /* Set up the following warnings, based on which modules are in use.
213 GNU Coding Standards discourage the use of fseek, since it imposes
214 an arbitrary limitation on some 32-bit hosts. Remember that the
215 fseek module depends on the fseeko module, so we only have three
218 1. The developer is not using either module. Issue a warning under
219 GNULIB_POSIXCHECK for both functions, to remind them that both
220 functions have bugs on some systems. _GL_NO_LARGE_FILES has no
221 impact on this warning.
223 2. The developer is using both modules. They may be unaware of the
224 arbitrary limitations of fseek, so issue a warning under
225 GNULIB_POSIXCHECK. On the other hand, they may be using both
226 modules intentionally, so the developer can define
227 _GL_NO_LARGE_FILES in the compilation units where the use of fseek
228 is safe, to silence the warning.
230 3. The developer is using the fseeko module, but not fseek. Gnulib
231 guarantees that fseek will still work around platform bugs in that
232 case, but we presume that the developer is aware of the pitfalls of
233 fseek and was trying to avoid it, so issue a warning even when
234 GNULIB_POSIXCHECK is undefined. Again, _GL_NO_LARGE_FILES can be
235 defined to silence the warning in particular compilation units.
237 Most gnulib clients that perform stream operations should fall into
241 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
242 # define _GL_FSEEK_WARN /* Category 2, above. */
247 # define fseek rpl_fseek
248 extern int fseek (FILE *fp, long offset, int whence) _GL_ARG_NONNULL ((1));
253 # if !@GNULIB_FSEEK@ && !defined _GL_NO_LARGE_FILES
254 # define _GL_FSEEK_WARN /* Category 3, above. */
257 # if @REPLACE_FSEEKO@
258 /* Provide fseek, fseeko functions that are aware of a preceding
259 fflush(), and which detect pipes. */
261 # define fseeko rpl_fseeko
262 extern int fseeko (FILE *fp, off_t offset, int whence) _GL_ARG_NONNULL ((1));
265 # define fseek rpl_fseek
266 static inline int _GL_ARG_NONNULL ((1))
267 rpl_fseek (FILE *fp, long offset, int whence)
269 return fseeko (fp, offset, whence);
273 #elif defined GNULIB_POSIXCHECK
274 # define _GL_FSEEK_WARN /* Category 1, above. */
277 # if HAVE_RAW_DECL_FSEEKO
278 _GL_WARN_ON_USE (fseeko, "fseeko is unportable - "
279 "use gnulib module fseeko for portability");
283 #ifdef _GL_FSEEK_WARN
284 # undef _GL_FSEEK_WARN
285 /* Here, either fseek is undefined (but C89 guarantees that it is
286 declared), or it is defined as rpl_fseek (declared above). */
287 _GL_WARN_ON_USE (fseek, "fseek cannot handle files larger than 4 GB "
288 "on 32-bit platforms - "
289 "use fseeko function for handling of large files");
292 /* See the comments on fseek/fseeko. */
295 # if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
296 # define _GL_FTELL_WARN /* Category 2, above. */
301 # define ftell rpl_ftell
302 extern long ftell (FILE *fp) _GL_ARG_NONNULL ((1));
307 # if !@GNULIB_FTELL@ && !defined _GL_NO_LARGE_FILES
308 # define _GL_FTELL_WARN /* Category 3, above. */
311 # if @REPLACE_FTELLO@
313 # define ftello rpl_ftello
314 extern off_t ftello (FILE *fp) _GL_ARG_NONNULL ((1));
317 # define ftell rpl_ftell
318 static inline long _GL_ARG_NONNULL ((1))
325 #elif defined GNULIB_POSIXCHECK
326 # define _GL_FTELL_WARN /* Category 1, above. */
329 # if HAVE_RAW_DECL_FTELLO
330 _GL_WARN_ON_USE (ftello, "ftello is unportable - "
331 "use gnulib module ftello for portability");
335 #ifdef _GL_FTELL_WARN
336 # undef _GL_FTELL_WARN
337 /* Here, either ftell is undefined (but C89 guarantees that it is
338 declared), or it is defined as rpl_ftell (declared above). */
339 _GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
340 "on 32-bit platforms - "
341 "use ftello function for handling of large files");
344 #if @GNULIB_FWRITE@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
346 # define fwrite rpl_fwrite
347 extern size_t fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
348 _GL_ARG_NONNULL ((1, 4));
351 #if @GNULIB_GETDELIM@
352 # if !@HAVE_DECL_GETDELIM@
353 /* Read input, up to (and including) the next occurrence of DELIMITER, from
354 STREAM, store it in *LINEPTR (and NUL-terminate it).
355 *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
356 bytes of space. It is realloc'd as necessary.
357 Return the number of bytes read and stored at *LINEPTR (not including the
358 NUL terminator), or -1 on error or EOF. */
359 extern ssize_t getdelim (char **lineptr, size_t *linesize, int delimiter,
361 _GL_ARG_NONNULL ((1, 2, 4));
363 #elif defined GNULIB_POSIXCHECK
365 # define getdelim(l, s, d, f) \
366 (GL_LINK_WARNING ("getdelim is unportable - " \
367 "use gnulib module getdelim for portability"), \
368 getdelim (l, s, d, f))
372 # if @REPLACE_GETLINE@
374 # define getline rpl_getline
376 # if !@HAVE_DECL_GETLINE@ || @REPLACE_GETLINE@
377 /* Read a line, up to (and including) the next newline, from STREAM, store it
378 in *LINEPTR (and NUL-terminate it).
379 *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
380 bytes of space. It is realloc'd as necessary.
381 Return the number of bytes read and stored at *LINEPTR (not including the
382 NUL terminator), or -1 on error or EOF. */
383 extern ssize_t getline (char **lineptr, size_t *linesize, FILE *stream)
384 _GL_ARG_NONNULL ((1, 2, 3));
386 #elif defined GNULIB_POSIXCHECK
388 # define getline(l, s, f) \
389 (GL_LINK_WARNING ("getline is unportable - " \
390 "use gnulib module getline for portability"), \
394 #if @GNULIB_OBSTACK_PRINTF@
395 # if @REPLACE_OBSTACK_PRINTF@
396 # define obstack_printf rpl_osbtack_printf
397 # define obstack_vprintf rpl_obstack_vprintf
399 # if @REPLACE_OBSTACK_PRINTF@ || !@HAVE_DECL_OBSTACK_PRINTF@
401 /* Grow an obstack with formatted output. Return the number of
402 bytes added to OBS. No trailing nul byte is added, and the
403 object should be closed with obstack_finish before use. Upon
404 memory allocation error, call obstack_alloc_failed_handler. Upon
405 other error, return -1. */
406 extern int obstack_printf (struct obstack *obs, const char *format, ...)
407 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((1, 2));
408 extern int obstack_vprintf (struct obstack *obs, const char *format,
410 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((1, 2));
415 # if @REPLACE_PERROR@
416 # define perror rpl_perror
417 /* Print a message to standard error, describing the value of ERRNO,
418 (if STRING is not NULL and not empty) prefixed with STRING and ": ",
419 and terminated with a newline. */
420 extern void perror (const char *string);
422 #elif defined GNULIB_POSIXCHECK
425 (GL_LINK_WARNING ("perror is not always POSIX compliant - " \
426 "use gnulib module perror for portability"), \
433 # define popen rpl_popen
434 extern FILE *popen (const char *cmd, const char *mode)
435 _GL_ARG_NONNULL ((1, 2));
437 #elif defined GNULIB_POSIXCHECK
439 # define popen(c,m) \
440 (GL_LINK_WARNING ("popen is buggy on some platforms - " \
441 "use gnulib module popen or pipe for more portability"), \
445 #if @GNULIB_PRINTF_POSIX@
446 # if @REPLACE_PRINTF@
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));
452 #elif @GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
453 /* Don't break __attribute__((format(printf,M,N))). */
454 # define printf __printf__
455 extern int printf (const char *format, ...)
456 __attribute__ ((__format__ (__printf__, 1, 2))) _GL_ARG_NONNULL ((1));
457 #elif defined GNULIB_POSIXCHECK
460 (GL_LINK_WARNING ("printf is not always POSIX compliant - " \
461 "use gnulib module printf-posix for portable " \
462 "POSIX compliance"), \
464 /* Don't break __attribute__((format(printf,M,N))). */
465 # define format(kind,m,n) format (__##kind##__, m, n)
466 # define __format__(kind,m,n) __format__ (__##kind##__, m, n)
467 # define ____printf____ __printf__
468 # define ____scanf____ __scanf__
469 # define ____strftime____ __strftime__
470 # define ____strfmon____ __strfmon__
473 #if @GNULIB_PUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
475 # define putc rpl_fputc
476 extern int putc (int c, FILE *stream) _GL_ARG_NONNULL ((2));
479 #if @GNULIB_PUTCHAR@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
481 # define putchar rpl_putchar
482 extern int putchar (int c);
485 #if @GNULIB_PUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
487 # define puts rpl_puts
488 extern int puts (const char *string) _GL_ARG_NONNULL ((1));
492 # if @REPLACE_REMOVE@
494 # define remove rpl_remove
495 extern int remove (const char *name) _GL_ARG_NONNULL ((1));
497 #elif defined GNULIB_POSIXCHECK
500 (GL_LINK_WARNING ("remove cannot handle directories on some platforms - " \
501 "use gnulib module remove for more portability"), \
506 # if @REPLACE_RENAME@
508 # define rename rpl_rename
509 extern int rename (const char *old_filename, const char *new_filename)
510 _GL_ARG_NONNULL ((1, 2));
512 #elif defined GNULIB_POSIXCHECK
514 # define rename(o,n) \
515 (GL_LINK_WARNING ("rename is buggy on some platforms - " \
516 "use gnulib module rename for more portability"), \
520 #if @GNULIB_RENAMEAT@
521 # if @REPLACE_RENAMEAT@
523 # define renameat rpl_renameat
525 # if !@HAVE_RENAMEAT@ || @REPLACE_RENAMEAT@
526 extern int renameat (int fd1, char const *file1, int fd2, char const *file2)
527 _GL_ARG_NONNULL ((2, 4));
529 #elif defined GNULIB_POSIXCHECK
531 # define renameat(d1,f1,d2,f2) \
532 (GL_LINK_WARNING ("renameat is not portable - " \
533 "use gnulib module renameat for portability"), \
534 renameat (d1, f1, d2, f2))
537 #if @GNULIB_SNPRINTF@
538 # if @REPLACE_SNPRINTF@
539 # define snprintf rpl_snprintf
541 # if @REPLACE_SNPRINTF@ || !@HAVE_DECL_SNPRINTF@
542 extern int snprintf (char *str, size_t size, const char *format, ...)
543 __attribute__ ((__format__ (__printf__, 3, 4)))
544 _GL_ARG_NONNULL ((3));
546 #elif defined GNULIB_POSIXCHECK
549 (GL_LINK_WARNING ("snprintf is unportable - " \
550 "use gnulib module snprintf for portability"), \
554 /* Some people would argue that sprintf should be handled like gets
555 (for example, OpenBSD issues a link warning for both functions),
556 since both can cause security holes due to buffer overruns.
557 However, we believe that sprintf can be used safely, and is more
558 efficient than snprintf in those safe cases; and as proof of our
559 belief, we use sprintf in several gnulib modules. So this header
560 intentionally avoids adding a warning to sprintf except when
561 GNULIB_POSIXCHECK is defined. */
563 #if @GNULIB_SPRINTF_POSIX@
564 # if @REPLACE_SPRINTF@
565 # define sprintf rpl_sprintf
566 extern int sprintf (char *str, const char *format, ...)
567 __attribute__ ((__format__ (__printf__, 2, 3)))
568 _GL_ARG_NONNULL ((1, 2));
570 #elif defined GNULIB_POSIXCHECK
573 (GL_LINK_WARNING ("sprintf is not always POSIX compliant - " \
574 "use gnulib module sprintf-posix for portable " \
575 "POSIX compliance"), \
579 #if @GNULIB_VASPRINTF@
580 # if @REPLACE_VASPRINTF@
581 # define asprintf rpl_asprintf
582 # define vasprintf rpl_vasprintf
584 # if @REPLACE_VASPRINTF@ || !@HAVE_VASPRINTF@
585 /* Write formatted output to a string dynamically allocated with malloc().
586 If the memory allocation succeeds, store the address of the string in
587 *RESULT and return the number of resulting bytes, excluding the trailing
588 NUL. Upon memory allocation error, or some other error, return -1. */
589 extern int asprintf (char **result, const char *format, ...)
590 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((1, 2));
591 extern int vasprintf (char **result, const char *format, va_list args)
592 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((1, 2));
596 #if @GNULIB_VDPRINTF@
597 # if @REPLACE_VDPRINTF@
598 # define vdprintf rpl_vdprintf
600 # if @REPLACE_VDPRINTF@ || !@HAVE_VDPRINTF@
601 extern int vdprintf (int fd, const char *format, va_list args)
602 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((2));
604 #elif defined GNULIB_POSIXCHECK
606 # define vdprintf(d,f,a) \
607 (GL_LINK_WARNING ("vdprintf is unportable - " \
608 "use gnulib module vdprintf for portability"), \
612 #if @GNULIB_VFPRINTF_POSIX@
613 # if @REPLACE_VFPRINTF@
614 # define vfprintf rpl_vfprintf
615 extern int vfprintf (FILE *fp, const char *format, va_list args)
616 __attribute__ ((__format__ (__printf__, 2, 0)))
617 _GL_ARG_NONNULL ((1, 2));
619 #elif @GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
620 # define vfprintf rpl_vfprintf
621 extern int vfprintf (FILE *fp, const char *format, va_list args)
622 __attribute__ ((__format__ (__printf__, 2, 0)))
623 _GL_ARG_NONNULL ((1, 2));
624 #elif defined GNULIB_POSIXCHECK
626 # define vfprintf(s,f,a) \
627 (GL_LINK_WARNING ("vfprintf is not always POSIX compliant - " \
628 "use gnulib module vfprintf-posix for portable " \
629 "POSIX compliance"), \
633 #if @GNULIB_VPRINTF_POSIX@
634 # if @REPLACE_VPRINTF@
635 # define vprintf rpl_vprintf
636 extern int vprintf (const char *format, va_list args)
637 __attribute__ ((__format__ (__printf__, 1, 0))) _GL_ARG_NONNULL ((1));
639 #elif @GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
640 # define vprintf rpl_vprintf
641 extern int vprintf (const char *format, va_list args)
642 __attribute__ ((__format__ (__printf__, 1, 0))) _GL_ARG_NONNULL ((1));
643 #elif defined GNULIB_POSIXCHECK
645 # define vprintf(f,a) \
646 (GL_LINK_WARNING ("vprintf is not always POSIX compliant - " \
647 "use gnulib module vprintf-posix for portable " \
648 "POSIX compliance"), \
652 #if @GNULIB_VSNPRINTF@
653 # if @REPLACE_VSNPRINTF@
654 # define vsnprintf rpl_vsnprintf
656 # if @REPLACE_VSNPRINTF@ || !@HAVE_DECL_VSNPRINTF@
657 extern int vsnprintf (char *str, size_t size, const char *format, va_list args)
658 __attribute__ ((__format__ (__printf__, 3, 0)))
659 _GL_ARG_NONNULL ((3));
661 #elif defined GNULIB_POSIXCHECK
663 # define vsnprintf(b,s,f,a) \
664 (GL_LINK_WARNING ("vsnprintf is unportable - " \
665 "use gnulib module vsnprintf for portability"), \
666 vsnprintf (b, s, f, a))
669 #if @GNULIB_VSPRINTF_POSIX@
670 # if @REPLACE_VSPRINTF@
671 # define vsprintf rpl_vsprintf
672 extern int vsprintf (char *str, const char *format, va_list args)
673 __attribute__ ((__format__ (__printf__, 2, 0)))
674 _GL_ARG_NONNULL ((1, 2));
676 #elif defined GNULIB_POSIXCHECK
678 # define vsprintf(b,f,a) \
679 (GL_LINK_WARNING ("vsprintf is not always POSIX compliant - " \
680 "use gnulib module vsprintf-posix for portable " \
681 "POSIX compliance"), \
689 #endif /* _GL_STDIO_H */
690 #endif /* _GL_STDIO_H */