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 !@HAVE_DECL_GETDELIM@
344 /* Read input, up to (and including) the next occurrence of DELIMITER, from
345 STREAM, store it in *LINEPTR (and NUL-terminate it).
346 *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
347 bytes of space. It is realloc'd as necessary.
348 Return the number of bytes read and stored at *LINEPTR (not including the
349 NUL terminator), or -1 on error or EOF. */
350 extern ssize_t getdelim (char **lineptr, size_t *linesize, int delimiter,
352 _GL_ARG_NONNULL ((1, 2, 4));
354 #elif defined GNULIB_POSIXCHECK
356 # if HAVE_RAW_DECL_GETDELIM
357 _GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
358 "use gnulib module getdelim for portability");
363 # if @REPLACE_GETLINE@
365 # define getline rpl_getline
367 # if !@HAVE_DECL_GETLINE@ || @REPLACE_GETLINE@
368 /* Read a line, up to (and including) the next newline, from STREAM, store it
369 in *LINEPTR (and NUL-terminate it).
370 *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
371 bytes of space. It is realloc'd as necessary.
372 Return the number of bytes read and stored at *LINEPTR (not including the
373 NUL terminator), or -1 on error or EOF. */
374 extern ssize_t getline (char **lineptr, size_t *linesize, FILE *stream)
375 _GL_ARG_NONNULL ((1, 2, 3));
377 #elif defined GNULIB_POSIXCHECK
379 # if HAVE_RAW_DECL_GETLINE
380 _GL_WARN_ON_USE (getline, "getline is unportable - "
381 "use gnulib module getline for portability");
385 #if @GNULIB_OBSTACK_PRINTF@
386 # if @REPLACE_OBSTACK_PRINTF@
387 # define obstack_printf rpl_osbtack_printf
388 # define obstack_vprintf rpl_obstack_vprintf
390 # if @REPLACE_OBSTACK_PRINTF@ || !@HAVE_DECL_OBSTACK_PRINTF@
392 /* Grow an obstack with formatted output. Return the number of
393 bytes added to OBS. No trailing nul byte is added, and the
394 object should be closed with obstack_finish before use. Upon
395 memory allocation error, call obstack_alloc_failed_handler. Upon
396 other error, return -1. */
397 extern int obstack_printf (struct obstack *obs, const char *format, ...)
398 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((1, 2));
399 extern int obstack_vprintf (struct obstack *obs, const char *format,
401 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((1, 2));
406 # if @REPLACE_PERROR@
407 # define perror rpl_perror
408 /* Print a message to standard error, describing the value of ERRNO,
409 (if STRING is not NULL and not empty) prefixed with STRING and ": ",
410 and terminated with a newline. */
411 extern void perror (const char *string);
413 #elif defined GNULIB_POSIXCHECK
415 /* Assume perror is always declared. */
416 _GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
417 "use gnulib module perror for portability");
423 # define popen rpl_popen
424 extern FILE *popen (const char *cmd, const char *mode)
425 _GL_ARG_NONNULL ((1, 2));
427 #elif defined GNULIB_POSIXCHECK
429 # if HAVE_RAW_DECL_POPEN
430 _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
431 "use gnulib module popen or pipe for more portability");
435 #if @GNULIB_PRINTF_POSIX@
436 # if @REPLACE_PRINTF@
437 /* Don't break __attribute__((format(printf,M,N))). */
438 # define printf __printf__
439 extern int printf (const char *format, ...)
440 __attribute__ ((__format__ (__printf__, 1, 2))) _GL_ARG_NONNULL ((1));
442 #elif @GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
443 /* Don't break __attribute__((format(printf,M,N))). */
444 # define printf __printf__
445 extern int printf (const char *format, ...)
446 __attribute__ ((__format__ (__printf__, 1, 2))) _GL_ARG_NONNULL ((1));
447 #elif defined GNULIB_POSIXCHECK
449 /* Assume printf is always declared. */
450 _GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
451 "use gnulib module printf-posix for portable "
455 #if @GNULIB_PUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
457 # define putc rpl_fputc
458 extern int putc (int c, FILE *stream) _GL_ARG_NONNULL ((2));
461 #if @GNULIB_PUTCHAR@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
463 # define putchar rpl_putchar
464 extern int putchar (int c);
467 #if @GNULIB_PUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
469 # define puts rpl_puts
470 extern int puts (const char *string) _GL_ARG_NONNULL ((1));
474 # if @REPLACE_REMOVE@
476 # define remove rpl_remove
477 extern int remove (const char *name) _GL_ARG_NONNULL ((1));
479 #elif defined GNULIB_POSIXCHECK
481 /* Assume remove is always declared. */
482 _GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
483 "use gnulib module remove for more portability");
487 # if @REPLACE_RENAME@
489 # define rename rpl_rename
490 extern int rename (const char *old_filename, const char *new_filename)
491 _GL_ARG_NONNULL ((1, 2));
493 #elif defined GNULIB_POSIXCHECK
495 /* Assume rename is always declared. */
496 _GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
497 "use gnulib module rename for more portability");
500 #if @GNULIB_RENAMEAT@
501 # if @REPLACE_RENAMEAT@
503 # define renameat rpl_renameat
505 # if !@HAVE_RENAMEAT@ || @REPLACE_RENAMEAT@
506 extern int renameat (int fd1, char const *file1, int fd2, char const *file2)
507 _GL_ARG_NONNULL ((2, 4));
509 #elif defined GNULIB_POSIXCHECK
511 # if HAVE_RAW_DECL_RENAMEAT
512 _GL_WARN_ON_USE (renameat, "renameat is not portable - "
513 "use gnulib module renameat for portability");
517 #if @GNULIB_SNPRINTF@
518 # if @REPLACE_SNPRINTF@
519 # define snprintf rpl_snprintf
521 # if @REPLACE_SNPRINTF@ || !@HAVE_DECL_SNPRINTF@
522 extern int snprintf (char *str, size_t size, const char *format, ...)
523 __attribute__ ((__format__ (__printf__, 3, 4)))
524 _GL_ARG_NONNULL ((3));
526 #elif defined GNULIB_POSIXCHECK
528 # if HAVE_RAW_DECL_SNPRINTF
529 _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
530 "use gnulib module snprintf for portability");
534 /* Some people would argue that sprintf should be handled like gets
535 (for example, OpenBSD issues a link warning for both functions),
536 since both can cause security holes due to buffer overruns.
537 However, we believe that sprintf can be used safely, and is more
538 efficient than snprintf in those safe cases; and as proof of our
539 belief, we use sprintf in several gnulib modules. So this header
540 intentionally avoids adding a warning to sprintf except when
541 GNULIB_POSIXCHECK is defined. */
543 #if @GNULIB_SPRINTF_POSIX@
544 # if @REPLACE_SPRINTF@
545 # define sprintf rpl_sprintf
546 extern int sprintf (char *str, const char *format, ...)
547 __attribute__ ((__format__ (__printf__, 2, 3)))
548 _GL_ARG_NONNULL ((1, 2));
550 #elif defined GNULIB_POSIXCHECK
552 /* Assume sprintf is always declared. */
553 _GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
554 "use gnulib module sprintf-posix for portable "
558 #if @GNULIB_VASPRINTF@
559 # if @REPLACE_VASPRINTF@
560 # define asprintf rpl_asprintf
561 # define vasprintf rpl_vasprintf
563 # if @REPLACE_VASPRINTF@ || !@HAVE_VASPRINTF@
564 /* Write formatted output to a string dynamically allocated with malloc().
565 If the memory allocation succeeds, store the address of the string in
566 *RESULT and return the number of resulting bytes, excluding the trailing
567 NUL. Upon memory allocation error, or some other error, return -1. */
568 extern int asprintf (char **result, const char *format, ...)
569 __attribute__ ((__format__ (__printf__, 2, 3))) _GL_ARG_NONNULL ((1, 2));
570 extern int vasprintf (char **result, const char *format, va_list args)
571 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((1, 2));
575 #if @GNULIB_VDPRINTF@
576 # if @REPLACE_VDPRINTF@
577 # define vdprintf rpl_vdprintf
579 # if @REPLACE_VDPRINTF@ || !@HAVE_VDPRINTF@
580 extern int vdprintf (int fd, const char *format, va_list args)
581 __attribute__ ((__format__ (__printf__, 2, 0))) _GL_ARG_NONNULL ((2));
583 #elif defined GNULIB_POSIXCHECK
585 # if HAVE_RAW_DECL_VDPRINTF
586 _GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
587 "use gnulib module vdprintf for portability");
591 #if @GNULIB_VFPRINTF_POSIX@
592 # if @REPLACE_VFPRINTF@
593 # define vfprintf rpl_vfprintf
594 extern int vfprintf (FILE *fp, const char *format, va_list args)
595 __attribute__ ((__format__ (__printf__, 2, 0)))
596 _GL_ARG_NONNULL ((1, 2));
598 #elif @GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
599 # define vfprintf rpl_vfprintf
600 extern int vfprintf (FILE *fp, const char *format, va_list args)
601 __attribute__ ((__format__ (__printf__, 2, 0)))
602 _GL_ARG_NONNULL ((1, 2));
603 #elif defined GNULIB_POSIXCHECK
605 /* Assume vfprintf is always declared. */
606 _GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
607 "use gnulib module vfprintf-posix for portable "
611 #if @GNULIB_VPRINTF_POSIX@
612 # if @REPLACE_VPRINTF@
613 # define vprintf rpl_vprintf
614 extern int vprintf (const char *format, va_list args)
615 __attribute__ ((__format__ (__printf__, 1, 0))) _GL_ARG_NONNULL ((1));
617 #elif @GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
618 # define vprintf rpl_vprintf
619 extern int vprintf (const char *format, va_list args)
620 __attribute__ ((__format__ (__printf__, 1, 0))) _GL_ARG_NONNULL ((1));
621 #elif defined GNULIB_POSIXCHECK
623 /* Assume vprintf is always declared. */
624 _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
625 "use gnulib module vprintf-posix for portable "
629 #if @GNULIB_VSNPRINTF@
630 # if @REPLACE_VSNPRINTF@
631 # define vsnprintf rpl_vsnprintf
633 # if @REPLACE_VSNPRINTF@ || !@HAVE_DECL_VSNPRINTF@
634 extern int vsnprintf (char *str, size_t size, const char *format, va_list args)
635 __attribute__ ((__format__ (__printf__, 3, 0)))
636 _GL_ARG_NONNULL ((3));
638 #elif defined GNULIB_POSIXCHECK
640 # if HAVE_RAW_DECL_VSNPRINTF
641 _GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
642 "use gnulib module vsnprintf for portability");
646 #if @GNULIB_VSPRINTF_POSIX@
647 # if @REPLACE_VSPRINTF@
648 # define vsprintf rpl_vsprintf
649 extern int vsprintf (char *str, const char *format, va_list args)
650 __attribute__ ((__format__ (__printf__, 2, 0)))
651 _GL_ARG_NONNULL ((1, 2));
653 #elif defined GNULIB_POSIXCHECK
655 /* Assume vsprintf is always declared. */
656 _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
657 "use gnulib module vsprintf-posix for portable "
665 #endif /* _GL_STDIO_H */
666 #endif /* _GL_STDIO_H */