Sync with the latest Gnulib code (6f2d632)

1 files changed, 367 insertions, 94 deletions

diff --git a/gl/stdio.in.h b/gl/stdio.in.h
index 80b9dbfd..06cbad00 100644
--- a/gl/stdio.in.h
+++ b/gl/stdio.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdio.h>.
 
-   Copyright (C) 2004, 2007-2010 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007-2013 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -13,47 +13,104 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
 #if __GNUC__ >= 3
 @PRAGMA_SYSTEM_HEADER@
 #endif
+@PRAGMA_COLUMNS@
 
-#if defined __need_FILE || defined __need___FILE
-/* Special invocation convention inside glibc header files.  */
+#if defined __need_FILE || defined __need___FILE || defined _GL_ALREADY_INCLUDING_STDIO_H
+/* Special invocation convention:
+   - Inside glibc header files.
+   - On OSF/1 5.1 we have a sequence of nested includes
+     <stdio.h> -> <getopt.h> -> <ctype.h> -> <sys/localedef.h> ->
+     <sys/lc_core.h> -> <nl_types.h> -> <mesg.h> -> <stdio.h>.
+     In this situation, the functions are not yet declared, therefore we cannot
+     provide the C++ aliases.  */
 
 #@INCLUDE_NEXT@ @NEXT_STDIO_H@
 
 #else
 /* Normal invocation convention.  */
 
-#ifndef _GL_STDIO_H
+#ifndef _@GUARD_PREFIX@_STDIO_H
+
+#define _GL_ALREADY_INCLUDING_STDIO_H
 
 /* The include_next requires a split double-inclusion guard.  */
 #@INCLUDE_NEXT@ @NEXT_STDIO_H@
 
-#ifndef _GL_STDIO_H
-#define _GL_STDIO_H
+#undef _GL_ALREADY_INCLUDING_STDIO_H
+
+#ifndef _@GUARD_PREFIX@_STDIO_H
+#define _@GUARD_PREFIX@_STDIO_H
 
 /* Get va_list.  Needed on many systems, including glibc 2.8.  */
 #include <stdarg.h>
 
 #include <stddef.h>
 
-/* Get off_t and ssize_t.  Needed on many systems, including glibc 2.8.  */
+/* Get off_t and ssize_t.  Needed on many systems, including glibc 2.8
+   and eglibc 2.11.2.
+   May also define off_t to a 64-bit type on native Windows.  */
 #include <sys/types.h>
 
-#ifndef __attribute__
 /* The __attribute__ feature is available in gcc versions 2.5 and later.
    The __-protected variants of the attributes 'format' and 'printf' are
    accepted by gcc versions 2.6.4 (effectively 2.7) and later.
-   We enable __attribute__ only if these are supported too, because
+   We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
    gnulib and libintl do '#define printf __printf__' when they override
    the 'printf' function.  */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-#  define __attribute__(Spec)   /* empty */
-# endif
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT_PRINTF
+   indicates to GCC that the function takes a format string and arguments,
+   where the format string directives are the ones standardized by ISO C99
+   and POSIX.  */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+# define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
+   _GL_ATTRIBUTE_FORMAT ((__gnu_printf__, formatstring_parameter, first_argument))
+#else
+# define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
+   _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_PRINTF,
+   except that it indicates to GCC that the supported format string directives
+   are the ones of the system printf(), rather than the ones standardized by
+   ISO C99 and POSIX.  */
+#define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \
+  _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
+
+/* _GL_ATTRIBUTE_FORMAT_SCANF
+   indicates to GCC that the function takes a format string and arguments,
+   where the format string directives are the ones standardized by ISO C99
+   and POSIX.  */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+# define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
+   _GL_ATTRIBUTE_FORMAT ((__gnu_scanf__, formatstring_parameter, first_argument))
+#else
+# define _GL_ATTRIBUTE_FORMAT_SCANF(formatstring_parameter, first_argument) \
+   _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM is like _GL_ATTRIBUTE_FORMAT_SCANF,
+   except that it indicates to GCC that the supported format string directives
+   are the ones of the system scanf(), rather than the ones standardized by
+   ISO C99 and POSIX.  */
+#define _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM(formatstring_parameter, first_argument) \
+  _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
+
+/* Solaris 10 declares renameat in <unistd.h>, not in <stdio.h>.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_RENAMEAT@ || defined GNULIB_POSIXCHECK) && defined __sun \
+    && ! defined __GLIBC__
+# include <unistd.h>
 #endif
 
 
@@ -74,13 +131,13 @@
 #   define dprintf rpl_dprintf
 #  endif
 _GL_FUNCDECL_RPL (dprintf, int, (int fd, const char *format, ...)
-                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                                 _GL_ARG_NONNULL ((2)));
 _GL_CXXALIAS_RPL (dprintf, int, (int fd, const char *format, ...));
 # else
 #  if !@HAVE_DPRINTF@
 _GL_FUNCDECL_SYS (dprintf, int, (int fd, const char *format, ...)
-                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                                 _GL_ARG_NONNULL ((2)));
 #  endif
 _GL_CXXALIAS_SYS (dprintf, int, (int fd, const char *format, ...));
@@ -113,6 +170,26 @@ _GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - "
                  "use gnulib module fclose for portable POSIX compliance");
 #endif
 
+#if @GNULIB_FDOPEN@
+# if @REPLACE_FDOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fdopen
+#   define fdopen rpl_fdopen
+#  endif
+_GL_FUNCDECL_RPL (fdopen, FILE *, (int fd, const char *mode)
+                                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fdopen, FILE *, (int fd, const char *mode));
+# else
+_GL_CXXALIAS_SYS (fdopen, FILE *, (int fd, const char *mode));
+# endif
+_GL_CXXALIASWARN (fdopen);
+#elif defined GNULIB_POSIXCHECK
+# undef fdopen
+/* Assume fdopen is always declared.  */
+_GL_WARN_ON_USE (fdopen, "fdopen on native Windows platforms is not POSIX compliant - "
+                 "use gnulib module fdopen for portability");
+#endif
+
 #if @GNULIB_FFLUSH@
 /* Flush all pending data on STREAM according to POSIX rules.  Both
    output and seekable input streams are supported.
@@ -137,11 +214,34 @@ _GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
                  "use gnulib module fflush for portable POSIX compliance");
 #endif
 
-/* It is very rare that the developer ever has full control of stdin,
-   so any use of gets warrants an unconditional warning.  Assume it is
-   always declared, since it is required by C89.  */
-#undef gets
-_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+#if @GNULIB_FGETC@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fgetc
+#   define fgetc rpl_fgetc
+#  endif
+_GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fgetc, int, (FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fgetc, int, (FILE *stream));
+# endif
+_GL_CXXALIASWARN (fgetc);
+#endif
+
+#if @GNULIB_FGETS@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fgets
+#   define fgets rpl_fgets
+#  endif
+_GL_FUNCDECL_RPL (fgets, char *, (char *s, int n, FILE *stream)
+                                 _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (fgets, char *, (char *s, int n, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fgets, char *, (char *s, int n, FILE *stream));
+# endif
+_GL_CXXALIASWARN (fgets);
+#endif
 
 #if @GNULIB_FOPEN@
 # if @REPLACE_FOPEN@
@@ -159,20 +259,26 @@ _GL_CXXALIASWARN (fopen);
 #elif defined GNULIB_POSIXCHECK
 # undef fopen
 /* Assume fopen is always declared.  */
-_GL_WARN_ON_USE (fopen, "fopen on Win32 platforms is not POSIX compatible - "
+_GL_WARN_ON_USE (fopen, "fopen on native Windows platforms is not POSIX compliant - "
                  "use gnulib module fopen for portability");
 #endif
 
 #if @GNULIB_FPRINTF_POSIX@ || @GNULIB_FPRINTF@
 # if (@GNULIB_FPRINTF_POSIX@ && @REPLACE_FPRINTF@) \
-     || (@GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+     || (@GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define fprintf rpl_fprintf
 #  endif
 #  define GNULIB_overrides_fprintf 1
+#  if @GNULIB_FPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 _GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
-                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                                 _GL_ARG_NONNULL ((1, 2)));
+#  else
+_GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
+                                _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 3)
+                                _GL_ARG_NONNULL ((1, 2)));
+#  endif
 _GL_CXXALIAS_RPL (fprintf, int, (FILE *fp, const char *format, ...));
 # else
 _GL_CXXALIAS_SYS (fprintf, int, (FILE *fp, const char *format, ...));
@@ -218,7 +324,7 @@ _GL_WARN_ON_USE (fpurge, "fpurge is not always present - "
 #endif
 
 #if @GNULIB_FPUTC@
-# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef fputc
 #   define fputc rpl_fputc
@@ -232,7 +338,7 @@ _GL_CXXALIASWARN (fputc);
 #endif
 
 #if @GNULIB_FPUTS@
-# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef fputs
 #   define fputs rpl_fputs
@@ -246,6 +352,21 @@ _GL_CXXALIAS_SYS (fputs, int, (const char *string, FILE *stream));
 _GL_CXXALIASWARN (fputs);
 #endif
 
+#if @GNULIB_FREAD@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fread
+#   define fread rpl_fread
+#  endif
+_GL_FUNCDECL_RPL (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream)
+                                 _GL_ARG_NONNULL ((4)));
+_GL_CXXALIAS_RPL (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fread, size_t, (void *ptr, size_t s, size_t n, FILE *stream));
+# endif
+_GL_CXXALIASWARN (fread);
+#endif
+
 #if @GNULIB_FREOPEN@
 # if @REPLACE_FREOPEN@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -265,10 +386,27 @@ _GL_CXXALIASWARN (freopen);
 #elif defined GNULIB_POSIXCHECK
 # undef freopen
 /* Assume freopen is always declared.  */
-_GL_WARN_ON_USE (freopen, "freopen on Win32 platforms is not POSIX compatible - "
+_GL_WARN_ON_USE (freopen,
+                 "freopen on native Windows platforms is not POSIX compliant - "
                  "use gnulib module freopen for portability");
 #endif
 
+#if @GNULIB_FSCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fscanf
+#   define fscanf rpl_fscanf
+#  endif
+_GL_FUNCDECL_RPL (fscanf, int, (FILE *stream, const char *format, ...)
+                               _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 3)
+                               _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fscanf, int, (FILE *stream, const char *format, ...));
+# else
+_GL_CXXALIAS_SYS (fscanf, int, (FILE *stream, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (fscanf);
+#endif
+
 
 /* Set up the following warnings, based on which modules are in use.
    GNU Coding Standards discourage the use of fseek, since it imposes
@@ -336,29 +474,13 @@ _GL_FUNCDECL_RPL (fseeko, int, (FILE *fp, off_t offset, int whence)
                                _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (fseeko, int, (FILE *fp, off_t offset, int whence));
 # else
-#  if ! @HAVE_FSEEKO@
+#  if ! @HAVE_DECL_FSEEKO@
 _GL_FUNCDECL_SYS (fseeko, int, (FILE *fp, off_t offset, int whence)
                                _GL_ARG_NONNULL ((1)));
 #  endif
 _GL_CXXALIAS_SYS (fseeko, int, (FILE *fp, off_t offset, int whence));
 # endif
 _GL_CXXALIASWARN (fseeko);
-# if (@REPLACE_FSEEKO@ || !@HAVE_FSEEKO@) && !@GNULIB_FSEEK@
-   /* Provide an fseek function that is consistent with fseeko.  */
-   /* In order to avoid that fseek gets defined as a macro here, the
-      developer can request the 'fseek' module.  */
-#  undef fseek
-#  define fseek rpl_fseek
-static inline int _GL_ARG_NONNULL ((1))
-rpl_fseek (FILE *fp, long offset, int whence)
-{
-#  if @REPLACE_FSEEKO@
-  return rpl_fseeko (fp, offset, whence);
-#  else
-  return fseeko (fp, offset, whence);
-#  endif
-}
-# endif
 #elif defined GNULIB_POSIXCHECK
 # define _GL_FSEEK_WARN /* Category 1, above.  */
 # undef fseek
@@ -412,28 +534,12 @@ _GL_CXXALIASWARN (ftell);
 _GL_FUNCDECL_RPL (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (ftello, off_t, (FILE *fp));
 # else
-#  if ! @HAVE_FTELLO@
+#  if ! @HAVE_DECL_FTELLO@
 _GL_FUNCDECL_SYS (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
 #  endif
 _GL_CXXALIAS_SYS (ftello, off_t, (FILE *fp));
 # endif
 _GL_CXXALIASWARN (ftello);
-# if (@REPLACE_FTELLO@ || !@HAVE_FTELLO@) && !@GNULIB_FTELL@
-   /* Provide an ftell function that is consistent with ftello.  */
-   /* In order to avoid that ftell gets defined as a macro here, the
-      developer can request the 'ftell' module.  */
-#  undef ftell
-#  define ftell rpl_ftell
-static inline long _GL_ARG_NONNULL ((1))
-rpl_ftell (FILE *f)
-{
-#  if @REPLACE_FTELLO@
-  return rpl_ftello (f);
-#  else
-  return ftello (f);
-#  endif
-}
-# endif
 #elif defined GNULIB_POSIXCHECK
 # define _GL_FTELL_WARN /* Category 1, above.  */
 # undef ftell
@@ -455,7 +561,7 @@ _GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
 
 
 #if @GNULIB_FWRITE@
-# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef fwrite
 #   define fwrite rpl_fwrite
@@ -468,10 +574,61 @@ _GL_CXXALIAS_RPL (fwrite, size_t,
 # else
 _GL_CXXALIAS_SYS (fwrite, size_t,
                   (const void *ptr, size_t s, size_t n, FILE *stream));
+
+/* Work around bug 11959 when fortifying glibc 2.4 through 2.15
+   <http://sources.redhat.com/bugzilla/show_bug.cgi?id=11959>,
+   which sometimes causes an unwanted diagnostic for fwrite calls.
+   This affects only function declaration attributes under certain
+   versions of gcc and clang, and is not needed for C++.  */
+#  if (0 < __USE_FORTIFY_LEVEL                                          \
+       && __GLIBC__ == 2 && 4 <= __GLIBC_MINOR__ && __GLIBC_MINOR__ <= 15 \
+       && 3 < __GNUC__ + (4 <= __GNUC_MINOR__)                          \
+       && !defined __cplusplus)
+#   undef fwrite
+#   undef fwrite_unlocked
+extern size_t __REDIRECT (rpl_fwrite,
+                          (const void *__restrict, size_t, size_t,
+                           FILE *__restrict),
+                          fwrite);
+extern size_t __REDIRECT (rpl_fwrite_unlocked,
+                          (const void *__restrict, size_t, size_t,
+                           FILE *__restrict),
+                          fwrite_unlocked);
+#   define fwrite rpl_fwrite
+#   define fwrite_unlocked rpl_fwrite_unlocked
+#  endif
 # endif
 _GL_CXXALIASWARN (fwrite);
 #endif
 
+#if @GNULIB_GETC@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getc
+#   define getc rpl_fgetc
+#  endif
+_GL_FUNCDECL_RPL (fgetc, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL_1 (getc, rpl_fgetc, int, (FILE *stream));
+# else
+_GL_CXXALIAS_SYS (getc, int, (FILE *stream));
+# endif
+_GL_CXXALIASWARN (getc);
+#endif
+
+#if @GNULIB_GETCHAR@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getchar
+#   define getchar rpl_getchar
+#  endif
+_GL_FUNCDECL_RPL (getchar, int, (void));
+_GL_CXXALIAS_RPL (getchar, int, (void));
+# else
+_GL_CXXALIAS_SYS (getchar, int, (void));
+# endif
+_GL_CXXALIASWARN (getchar);
+#endif
+
 #if @GNULIB_GETDELIM@
 /* Read input, up to (and including) the next occurrence of DELIMITER, from
    STREAM, store it in *LINEPTR (and NUL-terminate it).
@@ -548,6 +705,15 @@ _GL_WARN_ON_USE (getline, "getline is unportable - "
 # endif
 #endif
 
+/* It is very rare that the developer ever has full control of stdin,
+   so any use of gets warrants an unconditional warning; besides, C11
+   removed it.  */
+#undef gets
+#if HAVE_RAW_DECL_GETS
+_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+#endif
+
+
 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
 struct obstack;
 /* Grow an obstack with formatted output.  Return the number of
@@ -561,7 +727,7 @@ struct obstack;
 #  endif
 _GL_FUNCDECL_RPL (obstack_printf, int,
                   (struct obstack *obs, const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (obstack_printf, int,
                   (struct obstack *obs, const char *format, ...));
@@ -569,7 +735,7 @@ _GL_CXXALIAS_RPL (obstack_printf, int,
 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 _GL_FUNCDECL_SYS (obstack_printf, int,
                   (struct obstack *obs, const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                   _GL_ARG_NONNULL ((1, 2)));
 #  endif
 _GL_CXXALIAS_SYS (obstack_printf, int,
@@ -582,7 +748,7 @@ _GL_CXXALIASWARN (obstack_printf);
 #  endif
 _GL_FUNCDECL_RPL (obstack_vprintf, int,
                   (struct obstack *obs, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (obstack_vprintf, int,
                   (struct obstack *obs, const char *format, va_list args));
@@ -590,7 +756,7 @@ _GL_CXXALIAS_RPL (obstack_vprintf, int,
 #  if !@HAVE_DECL_OBSTACK_PRINTF@
 _GL_FUNCDECL_SYS (obstack_vprintf, int,
                   (struct obstack *obs, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                   _GL_ARG_NONNULL ((1, 2)));
 #  endif
 _GL_CXXALIAS_SYS (obstack_vprintf, int,
@@ -599,6 +765,20 @@ _GL_CXXALIAS_SYS (obstack_vprintf, int,
 _GL_CXXALIASWARN (obstack_vprintf);
 #endif
 
+#if @GNULIB_PCLOSE@
+# if !@HAVE_PCLOSE@
+_GL_FUNCDECL_SYS (pclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (pclose, int, (FILE *stream));
+_GL_CXXALIASWARN (pclose);
+#elif defined GNULIB_POSIXCHECK
+# undef pclose
+# if HAVE_RAW_DECL_PCLOSE
+_GL_WARN_ON_USE (pclose, "pclose is unportable - "
+                 "use gnulib module pclose for more portability");
+# endif
+#endif
+
 #if @GNULIB_PERROR@
 /* Print a message to standard error, describing the value of ERRNO,
    (if STRING is not NULL and not empty) prefixed with STRING and ": ",
@@ -630,6 +810,10 @@ _GL_FUNCDECL_RPL (popen, FILE *, (const char *cmd, const char *mode)
                                  _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode));
 # else
+#  if !@HAVE_POPEN@
+_GL_FUNCDECL_SYS (popen, FILE *, (const char *cmd, const char *mode)
+                                 _GL_ARG_NONNULL ((1, 2)));
+#  endif
 _GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode));
 # endif
 _GL_CXXALIASWARN (popen);
@@ -643,23 +827,35 @@ _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
 
 #if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
 # if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
-     || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+     || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 #  if defined __GNUC__
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 /* Don't break __attribute__((format(printf,M,N))).  */
 #    define printf __printf__
 #   endif
+#   if @GNULIB_PRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
+_GL_FUNCDECL_RPL_1 (__printf__, int,
+                    (const char *format, ...)
+                    __asm__ (@ASM_SYMBOL_PREFIX@
+                             _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
+                    _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
+                    _GL_ARG_NONNULL ((1)));
+#   else
 _GL_FUNCDECL_RPL_1 (__printf__, int,
                     (const char *format, ...)
                     __asm__ (@ASM_SYMBOL_PREFIX@
                              _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
-                    __attribute__ ((__format__ (__printf__, 1, 2)))
+                    _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 2)
                     _GL_ARG_NONNULL ((1)));
+#   endif
 _GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
 #  else
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define printf rpl_printf
+#   endif
 _GL_FUNCDECL_RPL (printf, int,
                   (const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 1, 2)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
                   _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (printf, int, (const char *format, ...));
 #  endif
@@ -680,7 +876,7 @@ _GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
 #endif
 
 #if @GNULIB_PUTC@
-# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef putc
 #   define putc rpl_fputc
@@ -694,7 +890,7 @@ _GL_CXXALIASWARN (putc);
 #endif
 
 #if @GNULIB_PUTCHAR@
-# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef putchar
 #   define putchar rpl_putchar
@@ -708,7 +904,7 @@ _GL_CXXALIASWARN (putchar);
 #endif
 
 #if @GNULIB_PUTS@
-# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@)
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef puts
 #   define puts rpl_puts
@@ -792,6 +988,37 @@ _GL_WARN_ON_USE (renameat, "renameat is not portable - "
 # endif
 #endif
 
+#if @GNULIB_SCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if defined __GNUC__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef scanf
+/* Don't break __attribute__((format(scanf,M,N))).  */
+#    define scanf __scanf__
+#   endif
+_GL_FUNCDECL_RPL_1 (__scanf__, int,
+                    (const char *format, ...)
+                    __asm__ (@ASM_SYMBOL_PREFIX@
+                             _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_scanf))
+                    _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
+                    _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL_1 (scanf, __scanf__, int, (const char *format, ...));
+#  else
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef scanf
+#    define scanf rpl_scanf
+#   endif
+_GL_FUNCDECL_RPL (scanf, int, (const char *format, ...)
+                              _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 2)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (scanf, int, (const char *format, ...));
+#  endif
+# else
+_GL_CXXALIAS_SYS (scanf, int, (const char *format, ...));
+# endif
+_GL_CXXALIASWARN (scanf);
+#endif
+
 #if @GNULIB_SNPRINTF@
 # if @REPLACE_SNPRINTF@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -799,7 +1026,7 @@ _GL_WARN_ON_USE (renameat, "renameat is not portable - "
 #  endif
 _GL_FUNCDECL_RPL (snprintf, int,
                   (char *str, size_t size, const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 3, 4)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
                   _GL_ARG_NONNULL ((3)));
 _GL_CXXALIAS_RPL (snprintf, int,
                   (char *str, size_t size, const char *format, ...));
@@ -807,7 +1034,7 @@ _GL_CXXALIAS_RPL (snprintf, int,
 #  if !@HAVE_DECL_SNPRINTF@
 _GL_FUNCDECL_SYS (snprintf, int,
                   (char *str, size_t size, const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 3, 4)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (3, 4)
                   _GL_ARG_NONNULL ((3)));
 #  endif
 _GL_CXXALIAS_SYS (snprintf, int,
@@ -822,9 +1049,9 @@ _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
 # endif
 #endif
 
-/* Some people would argue that sprintf should be handled like gets
-   (for example, OpenBSD issues a link warning for both functions),
-   since both can cause security holes due to buffer overruns.
+/* Some people would argue that all sprintf uses should be warned about
+   (for example, OpenBSD issues a link warning for it),
+   since it can cause security holes due to buffer overruns.
    However, we believe that sprintf can be used safely, and is more
    efficient than snprintf in those safe cases; and as proof of our
    belief, we use sprintf in several gnulib modules.  So this header
@@ -837,7 +1064,7 @@ _GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
 #   define sprintf rpl_sprintf
 #  endif
 _GL_FUNCDECL_RPL (sprintf, int, (char *str, const char *format, ...)
-                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                                 _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (sprintf, int, (char *str, const char *format, ...));
 # else
@@ -882,7 +1109,7 @@ _GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
 #  endif
 _GL_FUNCDECL_RPL (asprintf, int,
                   (char **result, const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (asprintf, int,
                   (char **result, const char *format, ...));
@@ -890,7 +1117,7 @@ _GL_CXXALIAS_RPL (asprintf, int,
 #  if !@HAVE_VASPRINTF@
 _GL_FUNCDECL_SYS (asprintf, int,
                   (char **result, const char *format, ...)
-                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 3)
                   _GL_ARG_NONNULL ((1, 2)));
 #  endif
 _GL_CXXALIAS_SYS (asprintf, int,
@@ -903,7 +1130,7 @@ _GL_CXXALIASWARN (asprintf);
 #  endif
 _GL_FUNCDECL_RPL (vasprintf, int,
                   (char **result, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (vasprintf, int,
                   (char **result, const char *format, va_list args));
@@ -911,7 +1138,7 @@ _GL_CXXALIAS_RPL (vasprintf, int,
 #  if !@HAVE_VASPRINTF@
 _GL_FUNCDECL_SYS (vasprintf, int,
                   (char **result, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                   _GL_ARG_NONNULL ((1, 2)));
 #  endif
 _GL_CXXALIAS_SYS (vasprintf, int,
@@ -926,13 +1153,13 @@ _GL_CXXALIASWARN (vasprintf);
 #   define vdprintf rpl_vdprintf
 #  endif
 _GL_FUNCDECL_RPL (vdprintf, int, (int fd, const char *format, va_list args)
-                                 __attribute__ ((__format__ (__printf__, 2, 0)))
+                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                                  _GL_ARG_NONNULL ((2)));
 _GL_CXXALIAS_RPL (vdprintf, int, (int fd, const char *format, va_list args));
 # else
 #  if !@HAVE_VDPRINTF@
 _GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
-                                 __attribute__ ((__format__ (__printf__, 2, 0)))
+                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                                  _GL_ARG_NONNULL ((2)));
 #  endif
 /* Need to cast, because on Solaris, the third parameter will likely be
@@ -951,14 +1178,20 @@ _GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
 
 #if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
 # if (@GNULIB_VFPRINTF_POSIX@ && @REPLACE_VFPRINTF@) \
-     || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+     || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define vfprintf rpl_vfprintf
 #  endif
 #  define GNULIB_overrides_vfprintf 1
+#  if @GNULIB_VFPRINTF_POSIX@
+_GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
+                                 _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
+                                 _GL_ARG_NONNULL ((1, 2)));
+#  else
 _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
-                                 __attribute__ ((__format__ (__printf__, 2, 0)))
+                                 _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (2, 0)
                                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
 _GL_CXXALIAS_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args));
 # else
 /* Need to cast, because on Solaris, the third parameter is
@@ -979,16 +1212,41 @@ _GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
                       "POSIX compliance");
 #endif
 
+#if @GNULIB_VFSCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef vfscanf
+#   define vfscanf rpl_vfscanf
+#  endif
+_GL_FUNCDECL_RPL (vfscanf, int,
+                  (FILE *stream, const char *format, va_list args)
+                  _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (2, 0)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vfscanf, int,
+                  (FILE *stream, const char *format, va_list args));
+# else
+_GL_CXXALIAS_SYS (vfscanf, int,
+                  (FILE *stream, const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (vfscanf);
+#endif
+
 #if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VPRINTF@
 # if (@GNULIB_VPRINTF_POSIX@ && @REPLACE_VPRINTF@) \
-     || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+     || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define vprintf rpl_vprintf
 #  endif
 #  define GNULIB_overrides_vprintf 1
+#  if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VFPRINTF_POSIX@
 _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
-                                __attribute__ ((__format__ (__printf__, 1, 0)))
+                                _GL_ATTRIBUTE_FORMAT_PRINTF (1, 0)
                                 _GL_ARG_NONNULL ((1)));
+#  else
+_GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
+                                _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM (1, 0)
+                                _GL_ARG_NONNULL ((1)));
+#  endif
 _GL_CXXALIAS_RPL (vprintf, int, (const char *format, va_list args));
 # else
 /* Need to cast, because on Solaris, the second parameter is
@@ -1008,6 +1266,22 @@ _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
                  "POSIX compliance");
 #endif
 
+#if @GNULIB_VSCANF@
+# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef vscanf
+#   define vscanf rpl_vscanf
+#  endif
+_GL_FUNCDECL_RPL (vscanf, int, (const char *format, va_list args)
+                               _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM (1, 0)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (vscanf, int, (const char *format, va_list args));
+# else
+_GL_CXXALIAS_SYS (vscanf, int, (const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (vscanf);
+#endif
+
 #if @GNULIB_VSNPRINTF@
 # if @REPLACE_VSNPRINTF@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -1015,7 +1289,7 @@ _GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
 #  endif
 _GL_FUNCDECL_RPL (vsnprintf, int,
                   (char *str, size_t size, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 3, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
                   _GL_ARG_NONNULL ((3)));
 _GL_CXXALIAS_RPL (vsnprintf, int,
                   (char *str, size_t size, const char *format, va_list args));
@@ -1023,7 +1297,7 @@ _GL_CXXALIAS_RPL (vsnprintf, int,
 #  if !@HAVE_DECL_VSNPRINTF@
 _GL_FUNCDECL_SYS (vsnprintf, int,
                   (char *str, size_t size, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 3, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0)
                   _GL_ARG_NONNULL ((3)));
 #  endif
 _GL_CXXALIAS_SYS (vsnprintf, int,
@@ -1045,7 +1319,7 @@ _GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
 #  endif
 _GL_FUNCDECL_RPL (vsprintf, int,
                   (char *str, const char *format, va_list args)
-                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ATTRIBUTE_FORMAT_PRINTF (2, 0)
                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (vsprintf, int,
                   (char *str, const char *format, va_list args));
@@ -1065,7 +1339,6 @@ _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
                       "POSIX compliance");
 #endif
 
-
-#endif /* _GL_STDIO_H */
-#endif /* _GL_STDIO_H */
+#endif /* _@GUARD_PREFIX@_STDIO_H */
+#endif /* _@GUARD_PREFIX@_STDIO_H */
 #endif