58 files changed, 1963 insertions, 549 deletions
diff --git a/gl/Makefile.am b/gl/Makefile.am
index cae814fd..87fe0316 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -28,6 +28,7 @@ MAINTAINERCLEANFILES =
 EXTRA_DIST += m4/gnulib-cache.m4
 AM_CPPFLAGS =
+AM_CFLAGS =
 noinst_LIBRARIES += libgnu.a
@@ -36,6 +37,13 @@ libgnu_a_LIBADD = $(gl_LIBOBJS)
 libgnu_a_DEPENDENCIES = $(gl_LIBOBJS)
 EXTRA_libgnu_a_SOURCES =
+## begin gnulib module alignof
+EXTRA_DIST += alignof.h
+## end   gnulib module alignof
 ## begin gnulib module alloca
@@ -70,7 +78,7 @@ BUILT_SOURCES += $(ARPA_INET_H)
 # We need the following in order to create <arpa/inet.h> when the system
 # doesn't have one.
-arpa/inet.h:
+arpa/inet.h: arpa_inet.in.h
        @MKDIR_P@ arpa
        rm -f $@-t $@
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
@@ -146,7 +154,7 @@ EXTRA_libgnu_a_SOURCES += cloexec.c
 # The Automake-defined pkg* macros are appended, in the order
 # listed in the Automake 1.10a+ documentation.
 configmake.h: Makefile
-        rm -f $@-t $@
+        rm -f $@-t
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          echo '#define PREFIX "$(prefix)"'; \
          echo '#define EXEC_PREFIX "$(exec_prefix)"'; \
@@ -176,7 +184,12 @@ configmake.h: Makefile
          echo '#define PKGLIBDIR "$(pkglibdir)"'; \
          echo '#define PKGLIBEXECDIR "$(pkglibexecdir)"'; \
        } | sed '/""/d' > $@-t
-        mv $@-t $@
+        if test -f $@ && cmp $@-t $@ > /dev/null; then \
+          rm -f $@-t; \
+        else \
+          rm -f $@; mv $@-t $@; \
+        fi
 BUILT_SOURCES += configmake.h
 CLEANFILES += configmake.h configmake.h-t
@@ -433,21 +446,37 @@ all-local: charset.alias ref-add.sed ref-del.sed
 charset_alias = $(DESTDIR)$(libdir)/charset.alias
 charset_tmp = $(DESTDIR)$(libdir)/charset.tmp
-install-exec-local: all-local
+install-exec-local: install-exec-localcharset
-        test $(GLIBC21) != no || $(mkinstalldirs) $(DESTDIR)$(libdir)
+install-exec-localcharset: all-local
+        if test $(GLIBC21) = no; then \
+          case '$(host_os)' in \
+            darwin[56]*) \
+              need_charset_alias=true ;; \
+            darwin* | cygwin* | mingw* | pw32* | cegcc*) \
+              need_charset_alias=false ;; \
+            *) \
+              need_charset_alias=true ;; \
+          esac ; \
+        else \
+          need_charset_alias=false ; \
+        fi ; \
+        if $$need_charset_alias; then \
+          $(mkinstalldirs) $(DESTDIR)$(libdir) ; \
+        fi ; \
        if test -f $(charset_alias); then \
          sed -f ref-add.sed $(charset_alias) > $(charset_tmp) ; \
          $(INSTALL_DATA) $(charset_tmp) $(charset_alias) ; \
          rm -f $(charset_tmp) ; \
        else \
-          if test $(GLIBC21) = no; then \
+          if $$need_charset_alias; then \
            sed -f ref-add.sed charset.alias > $(charset_tmp) ; \
            $(INSTALL_DATA) $(charset_tmp) $(charset_alias) ; \
            rm -f $(charset_tmp) ; \
          fi ; \
        fi
-uninstall-local: all-local
+uninstall-local: uninstall-localcharset
+uninstall-localcharset: all-local
        if test -f $(charset_alias); then \
          sed -f ref-del.sed $(charset_alias) > $(charset_tmp); \
          if grep '^# Packages using this file: $$' $(charset_tmp) \
@@ -794,6 +823,8 @@ stdio.h: stdio.in.h
              -e 's|@''GNULIB_VPRINTF_POSIX''@|$(GNULIB_VPRINTF_POSIX)|g' \
              -e 's|@''GNULIB_VSNPRINTF''@|$(GNULIB_VSNPRINTF)|g' \
              -e 's|@''GNULIB_VSPRINTF_POSIX''@|$(GNULIB_VSPRINTF_POSIX)|g' \
+              -e 's|@''GNULIB_DPRINTF''@|$(GNULIB_DPRINTF)|g' \
+              -e 's|@''GNULIB_VDPRINTF''@|$(GNULIB_VDPRINTF)|g' \
              -e 's|@''GNULIB_VASPRINTF''@|$(GNULIB_VASPRINTF)|g' \
              -e 's|@''GNULIB_OBSTACK_PRINTF''@|$(GNULIB_OBSTACK_PRINTF)|g' \
              -e 's|@''GNULIB_OBSTACK_PRINTF_POSIX''@|$(GNULIB_OBSTACK_PRINTF_POSIX)|g' \
@@ -826,6 +857,10 @@ stdio.h: stdio.in.h
              -e 's|@''HAVE_DECL_VSNPRINTF''@|$(HAVE_DECL_VSNPRINTF)|g' \
              -e 's|@''REPLACE_SPRINTF''@|$(REPLACE_SPRINTF)|g' \
              -e 's|@''REPLACE_VSPRINTF''@|$(REPLACE_VSPRINTF)|g' \
+              -e 's|@''HAVE_DPRINTF''@|$(HAVE_DPRINTF)|g' \
+              -e 's|@''REPLACE_DPRINTF''@|$(REPLACE_DPRINTF)|g' \
+              -e 's|@''HAVE_VDPRINTF''@|$(HAVE_VDPRINTF)|g' \
+              -e 's|@''REPLACE_VDPRINTF''@|$(REPLACE_VDPRINTF)|g' \
              -e 's|@''HAVE_VASPRINTF''@|$(HAVE_VASPRINTF)|g' \
              -e 's|@''REPLACE_VASPRINTF''@|$(REPLACE_VASPRINTF)|g' \
              -e 's|@''HAVE_DECL_OBSTACK_PRINTF''@|$(HAVE_DECL_OBSTACK_PRINTF)|g' \
@@ -866,6 +901,7 @@ stdlib.h: stdlib.in.h
          sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
              -e 's|@''NEXT_STDLIB_H''@|$(NEXT_STDLIB_H)|g' \
+              -e 's|@''HAVE_RANDOM_H''@|$(HAVE_RANDOM_H)|g' \
              -e 's|@''GNULIB_MALLOC_POSIX''@|$(GNULIB_MALLOC_POSIX)|g' \
              -e 's|@''GNULIB_REALLOC_POSIX''@|$(GNULIB_REALLOC_POSIX)|g' \
              -e 's|@''GNULIB_CALLOC_POSIX''@|$(GNULIB_CALLOC_POSIX)|g' \
@@ -912,6 +948,15 @@ EXTRA_DIST += stdlib.in.h
 ## end   gnulib module stdlib
+## begin gnulib module strdup-posix
+EXTRA_DIST += strdup.c
+EXTRA_libgnu_a_SOURCES += strdup.c
+## end   gnulib module strdup-posix
 ## begin gnulib module streq
@@ -1054,6 +1099,7 @@ sys/socket.h: sys_socket.in.h
              -e 's|@''GNULIB_SHUTDOWN''@|$(GNULIB_SHUTDOWN)|g' \
              -e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
              -e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
+              -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE''@|$(HAVE_STRUCT_SOCKADDR_STORAGE)|g' \
              -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
              < $(srcdir)/sys_socket.in.h; \
        } > $@-t
@@ -1139,6 +1185,7 @@ unistd.h: unistd.in.h
              -e 's|@''GNULIB_GETPAGESIZE''@|$(GNULIB_GETPAGESIZE)|g' \
              -e 's|@''GNULIB_GETUSERSHELL''@|$(GNULIB_GETUSERSHELL)|g' \
              -e 's|@''GNULIB_LCHOWN''@|$(GNULIB_LCHOWN)|g' \
+              -e 's|@''GNULIB_LINK''@|$(GNULIB_LINK)|g' \
              -e 's|@''GNULIB_LSEEK''@|$(GNULIB_LSEEK)|g' \
              -e 's|@''GNULIB_READLINK''@|$(GNULIB_READLINK)|g' \
              -e 's|@''GNULIB_SLEEP''@|$(GNULIB_SLEEP)|g' \
@@ -1153,6 +1200,7 @@ unistd.h: unistd.in.h
              -e 's|@''HAVE_GETHOSTNAME''@|$(HAVE_GETHOSTNAME)|g' \
              -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
              -e 's|@''HAVE_GETUSERSHELL''@|$(HAVE_GETUSERSHELL)|g' \
+              -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
              -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
              -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
              -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
@@ -1266,6 +1314,7 @@ wchar.h: wchar.in.h
              -e 's|@''REPLACE_MBSNRTOWCS''@|$(REPLACE_MBSNRTOWCS)|g' \
              -e 's|@''REPLACE_WCRTOMB''@|$(REPLACE_WCRTOMB)|g' \
              -e 's|@''REPLACE_WCSRTOMBS''@|$(REPLACE_WCSRTOMBS)|g' \
+              -e 's|@''REPLACE_WCSNRTOMBS''@|$(REPLACE_WCSNRTOMBS)|g' \
              -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
              -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
            < $(srcdir)/wchar.in.h; \
diff --git a/gl/alignof.h b/gl/alignof.h
new file mode 100644
index 00000000..896382b0
--- /dev/null
+++ b/gl/alignof.h
@@ -0,0 +1,33 @@
+/* Determine alignment of types.
+   Copyright (C) 2003-2004, 2006, 2009 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
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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.  */
+#ifndef _ALIGNOF_H
+#define _ALIGNOF_H
+#include <stddef.h>
+/* Determine the alignment of a type at compile time.  */
+#if defined __GNUC__
+# define alignof __alignof__
+#elif defined __cplusplus
+  template <class type> struct alignof_helper { char __slot1; type __slot2; };
+# define alignof(type) offsetof (alignof_helper<type>, __slot2)
+#else
+# define alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
+#endif
+#endif /* _ALIGNOF_H */
diff --git a/gl/arpa_inet.in.h b/gl/arpa_inet.in.h
index 4b95b944..ac933991 100644
--- a/gl/arpa_inet.in.h
+++ b/gl/arpa_inet.in.h
@@ -38,6 +38,10 @@
 /* The definition of GL_LINK_WARNING is copied here.  */
+#ifdef __cplusplus
+extern "C" {
+#endif
 #if @GNULIB_INET_NTOP@
 # if !@HAVE_DECL_INET_NTOP@
 /* Converts an internet address from internal format to a printable,
@@ -78,5 +82,9 @@ extern int inet_pton (int af, const char *restrict src, void *restrict dst);
   inet_pton (af, src, dst))
 #endif
+#ifdef __cplusplus
+}
+#endif
 #endif /* _GL_ARPA_INET_H */
 #endif /* _GL_ARPA_INET_H */
diff --git a/gl/c-strtod.c b/gl/c-strtod.c
index 95624ccc..51e996e5 100644
--- a/gl/c-strtod.c
+++ b/gl/c-strtod.c
@@ -1,6 +1,6 @@
 /* Convert string to double, using the C locale.
-   Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2006, 2009 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
@@ -21,10 +21,10 @@
 #include "c-strtod.h"
+#include <errno.h>
 #include <locale.h>
 #include <stdlib.h>
+#include <string.h>
-#include "xalloc.h"
 #if LONG
 # define C_STRTOD c_strtold
@@ -43,6 +43,25 @@
 # define STRTOD strtod
 #endif
+#ifdef LC_ALL_MASK
+/* Cache for the C locale object.
+   Marked volatile so that different threads see the same value
+   (avoids locking).  */
+static volatile locale_t c_locale_cache;
+/* Return the C locale object, or (locale_t) 0 with errno set
+   if it cannot be created.  */
+static inline locale_t
+c_locale (void)
+{
+  if (!c_locale_cache)
+    c_locale_cache = newlocale (LC_ALL_MASK, "C", (locale_t) 0);
+  return c_locale_cache;
+}
+#endif
 DOUBLE
 C_STRTOD (char const *nptr, char **endptr)
 {
@@ -50,9 +69,15 @@ C_STRTOD (char const *nptr, char **endptr)
 #ifdef LC_ALL_MASK
-  locale_t c_locale = newlocale (LC_ALL_MASK, "C", 0);
+  locale_t locale = c_locale ();
-  r = STRTOD_L (nptr, endptr, c_locale);
+  if (!locale)
-  freelocale (c_locale);
+    {
+      if (endptr)
+        *endptr = (char *) nptr;
+      return 0; /* errno is set here */
+    }
+  r = STRTOD_L (nptr, endptr, locale);
 #else
@@ -60,7 +85,13 @@ C_STRTOD (char const *nptr, char **endptr)
  if (saved_locale)
    {
-      saved_locale = xstrdup (saved_locale);
+      saved_locale = strdup (saved_locale);
+      if (saved_locale == NULL)
+        {
+          if (endptr)
+            *endptr = (char *) nptr;
+          return 0; /* errno is set here */
+        }
      setlocale (LC_NUMERIC, "C");
    }
@@ -68,8 +99,11 @@ C_STRTOD (char const *nptr, char **endptr)
  if (saved_locale)
    {
+      int saved_errno = errno;
      setlocale (LC_NUMERIC, saved_locale);
      free (saved_locale);
+      errno = saved_errno;
    }
 #endif
diff --git a/gl/c-strtod.h b/gl/c-strtod.h
index ca9a9e7c..2b3f8473 100644
--- a/gl/c-strtod.h
+++ b/gl/c-strtod.h
@@ -1,2 +1,37 @@
-double c_strtod (char const *, char **);
+/* Convert string to double, using the C locale.
-long double c_strtold (char const *, char **);
+   Copyright (C) 2003-2004, 2009 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
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, see <http://www.gnu.org/licenses/>.  */
+/* Parse the initial portion of the string pointed to by NPTR as a floating-
+   point number (in decimal or hexadecimal notation), like in the C locale:
+   accepting only the ASCII digits '0'..'9', and only '.' as decimal point
+   character.
+   If ENDPTR is not NULL, set *ENDPTR to point to the first byte beyond the
+   parsed number or to NPTR if the string does not start with a parseable
+   number.
+   Return value:
+   - If successful, return the value as a double or 'long double',
+     respectively, and don't modify errno.
+   - In case of overflow, return ±HUGE_VAL or ±HUGE_VALL, respectively, and
+     set errno to ERANGE.
+   - In case of underflow, return a value very near to 0 and set errno to
+     ERANGE.
+   - If the string does not start with a number at all, return 0 (and recall
+     that if ENDPTR != NULL, *ENDPTR is set to NPTR), and maybe set errno to
+     EINVAL.
+   - In case of other error, return 0 and set errno, for example to ENOMEM.  */
+extern double      c_strtod  (char const *nptr, char **endptr);
+extern long double c_strtold (char const *nptr, char **endptr);
diff --git a/gl/config.charset b/gl/config.charset
index 36ba683c..7f912120 100755
--- a/gl/config.charset
+++ b/gl/config.charset
@@ -1,7 +1,7 @@
 #! /bin/sh
 # Output a system dependent table of character encoding aliases.
 #
-#   Copyright (C) 2000-2004, 2006-2008 Free Software Foundation, Inc.
+#   Copyright (C) 2000-2004, 2006-2009 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
@@ -63,12 +63,13 @@
 #   CP922                       aix
 #   CP932                       aix woe32 dos
 #   CP943                       aix
-#   CP949                       osf woe32 dos
+#   CP949                       osf darwin woe32 dos
 #   CP950                       woe32 dos
 #   CP1046                      aix
 #   CP1124                      aix
 #   CP1125                      dos
 #   CP1129                      aix
+#   CP1131                      darwin
 #   CP1250                      woe32
 #   CP1251                      glibc solaris netbsd openbsd darwin woe32
 #   CP1252                      aix woe32
@@ -82,15 +83,17 @@
 #   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin
 #   EUC-TW                      glibc aix hpux irix osf solaris netbsd
 #   BIG5                    Y   glibc aix hpux osf solaris freebsd netbsd darwin
-#   BIG5-HKSCS                  glibc solaris
+#   BIG5-HKSCS                  glibc solaris darwin
-#   GBK                         glibc aix osf solaris woe32 dos
+#   GBK                         glibc aix osf solaris darwin woe32 dos
-#   GB18030                     glibc solaris netbsd
+#   GB18030                     glibc solaris netbsd darwin
 #   SHIFT_JIS               Y   hpux osf solaris freebsd netbsd darwin
 #   JOHAB                       glibc solaris woe32
 #   TIS-620                     glibc aix hpux osf solaris
 #   VISCII                  Y   glibc
 #   TCVN5712-1                  glibc
+#   ARMSCII-8                   glibc darwin
 #   GEORGIAN-PS                 glibc
+#   PT154                       glibc
 #   HP-ROMAN8                   hpux
 #   HP-ARABIC8                  hpux
 #   HP-GREEK8                   hpux
@@ -449,7 +452,8 @@ case "$os" in
        echo "ko_KR.EUC EUC-KR"
        ;;
    darwin*)
-        # Darwin 7.5 has nl_langinfo(CODESET), but it is useless:
+        # Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is
+        # useless:
        # - It returns the empty string when LANG is set to a locale of the
        #   form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
        #   LC_CTYPE file.
@@ -476,6 +480,36 @@ case "$os" in
        # minimize the use of decomposed Unicode. Unfortunately, through the
        # Darwin file system, decomposed UTF-8 strings are leaked into user
        # space nevertheless.
+        # Then there are also the locales with encodings other than US-ASCII
+        # and UTF-8. These locales can be occasionally useful to users (e.g.
+        # when grepping through ISO-8859-1 encoded text files), when all their
+        # file names are in US-ASCII.
+        echo "ISO8859-1 ISO-8859-1"
+        echo "ISO8859-2 ISO-8859-2"
+        echo "ISO8859-4 ISO-8859-4"
+        echo "ISO8859-5 ISO-8859-5"
+        echo "ISO8859-7 ISO-8859-7"
+        echo "ISO8859-9 ISO-8859-9"
+        echo "ISO8859-13 ISO-8859-13"
+        echo "ISO8859-15 ISO-8859-15"
+        echo "KOI8-R KOI8-R"
+        echo "KOI8-U KOI8-U"
+        echo "CP866 CP866"
+        echo "CP949 CP949"
+        echo "CP1131 CP1131"
+        echo "CP1251 CP1251"
+        echo "eucCN GB2312"
+        echo "GB2312 GB2312"
+        echo "eucJP EUC-JP"
+        echo "eucKR EUC-KR"
+        echo "Big5 BIG5"
+        echo "Big5HKSCS BIG5-HKSCS"
+        echo "GBK GBK"
+        echo "GB18030 GB18030"
+        echo "SJIS SHIFT_JIS"
+        echo "ARMSCII-8 ARMSCII-8"
+        echo "PT154 PT154"
+        #echo "ISCII-DEV ?"
        echo "* UTF-8"
        ;;
    beos* | haiku*)
diff --git a/gl/dup-safer.c b/gl/dup-safer.c
index a6908511..7d9b2be3 100644
--- a/gl/dup-safer.c
+++ b/gl/dup-safer.c
@@ -1,6 +1,7 @@
 /* Invoke dup, but avoid some glitches.
-   Copyright (C) 2001, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2004, 2005, 2006, 2009 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
@@ -24,9 +25,6 @@
 #include <fcntl.h>
 #include <unistd.h>
-#ifndef STDERR_FILENO
-# define STDERR_FILENO 2
-#endif
 /* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
   STDERR_FILENO.  */
diff --git a/gl/fd-safer.c b/gl/fd-safer.c
index df38c8f7..fb990018 100644
--- a/gl/fd-safer.c
+++ b/gl/fd-safer.c
@@ -1,6 +1,6 @@
 /* Return a safer copy of a file descriptor.
-   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2006, 2009 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
@@ -24,12 +24,6 @@
 #include <errno.h>
 #include <unistd.h>
-#ifndef STDIN_FILENO
-# define STDIN_FILENO 0
-#endif
-#ifndef STDERR_FILENO
-# define STDERR_FILENO 2
-#endif
 /* Return FD, unless FD would be a copy of standard input, output, or
   error; in that case, return a duplicate of FD, closing FD.  On
diff --git a/gl/fsusage.c b/gl/fsusage.c
index 23d40ea1..db0d3bc5 100644
--- a/gl/fsusage.c
+++ b/gl/fsusage.c
@@ -1,6 +1,6 @@
 /* fsusage.c -- return space usage of mounted file systems
-   Copyright (C) 1991, 1992, 1996, 1998, 1999, 2002, 2003, 2004, 2005, 2006
+   Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009
   Free Software Foundation, Inc.
   This program is free software: you can redistribute it and/or modify
@@ -232,6 +232,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
 #endif
+  (void) disk;  /* avoid argument-unused warning */
  return 0;
 }
diff --git a/gl/gai_strerror.c b/gl/gai_strerror.c
index 78a8edfe..afbcdbb4 100644
--- a/gl/gai_strerror.c
+++ b/gl/gai_strerror.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 2001, 2002, 2004, 2005, 2006, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2001, 2002, 2004, 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Philip Blundell <pjb27@cam.ac.uk>, 1997.
@@ -50,7 +50,7 @@ values[] =
    { EAI_SOCKTYPE, N_("ai_socktype not supported") },
    { EAI_SYSTEM, N_("System error") },
    { EAI_OVERFLOW, N_("Argument buffer too small") },
-#ifdef __USE_GNU
+#ifdef EAI_INPROGRESS
    { EAI_INPROGRESS, N_("Processing request in progress") },
    { EAI_CANCELED, N_("Request canceled") },
    { EAI_NOTCANCELED, N_("Request not canceled") },
diff --git a/gl/getloadavg.c b/gl/getloadavg.c
index 5c32f9f9..5a4005ce 100644
--- a/gl/getloadavg.c
+++ b/gl/getloadavg.c
@@ -1,8 +1,8 @@
 /* Get the system load averages.
   Copyright (C) 1985, 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994,
-   1995, 1997, 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
+   1995, 1997, 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
-   Foundation, Inc.
+   Software Foundation, Inc.
   NOTE: The canonical source of this file is maintained with gnulib.
   Bugs can be reported to bug-gnulib@gnu.org.
@@ -621,8 +621,11 @@ getloadavg (double loadavg[], int nelem)
  for (elem = 0; elem < nelem; elem++)
    {
      char *endptr;
-      double d = c_strtod (ptr, &endptr);
+      double d;
-      if (ptr == endptr)
+      errno = 0;
+      d = c_strtod (ptr, &endptr);
+      if (ptr == endptr || (d == 0 && errno != 0))
        {
          if (elem == 0)
            return -1;
diff --git a/gl/getopt1.c b/gl/getopt1.c
index d6a3ecf4..ba115c47 100644
--- a/gl/getopt1.c
+++ b/gl/getopt1.c
@@ -1,5 +1,5 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004,2006
+   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004,2006,2009
     Free Software Foundation, Inc.
   This file is part of the GNU C Library.
@@ -91,7 +91,7 @@ main (int argc, char **argv)
    {
      int this_option_optind = optind ? optind : 1;
      int option_index = 0;
-      static struct option long_options[] =
+      static const struct option long_options[] =
      {
        {"add", 1, 0, 0},
        {"append", 0, 0, 0},
diff --git a/gl/gettext.h b/gl/gettext.h
index 763dd3c1..8cf2dca0 100644
--- a/gl/gettext.h
+++ b/gl/gettext.h
@@ -1,5 +1,5 @@
 /* Convenience header for conditional use of GNU <libintl.h>.
-   Copyright (C) 1995-1998, 2000-2002, 2004-2006 Free Software Foundation, Inc.
+   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009 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
@@ -63,21 +63,30 @@
   for invalid uses of the value returned from these functions.
   On pre-ANSI systems without 'const', the config.h file is supposed to
   contain "#define const".  */
+# undef gettext
 # define gettext(Msgid) ((const char *) (Msgid))
+# undef dgettext
 # define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
+# undef dcgettext
 # define dcgettext(Domainname, Msgid, Category) \
    ((void) (Category), dgettext (Domainname, Msgid))
+# undef ngettext
 # define ngettext(Msgid1, Msgid2, N) \
    ((N) == 1 \
     ? ((void) (Msgid2), (const char *) (Msgid1)) \
     : ((void) (Msgid1), (const char *) (Msgid2)))
+# undef dngettext
 # define dngettext(Domainname, Msgid1, Msgid2, N) \
    ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
+# undef dcngettext
 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
    ((void) (Category), dngettext(Domainname, Msgid1, Msgid2, N))
+# undef textdomain
 # define textdomain(Domainname) ((const char *) (Domainname))
+# undef bindtextdomain
 # define bindtextdomain(Domainname, Dirname) \
    ((void) (Domainname), (const char *) (Dirname))
+# undef bind_textdomain_codeset
 # define bind_textdomain_codeset(Domainname, Codeset) \
    ((void) (Domainname), (const char *) (Codeset))
diff --git a/gl/localcharset.c b/gl/localcharset.c
index 68679cf8..a7ca94c1 100644
--- a/gl/localcharset.c
+++ b/gl/localcharset.c
@@ -1,6 +1,6 @@
 /* Determine a canonical name for the current locale's character encoding.
-   Copyright (C) 2000-2006, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2000-2006, 2008-2009 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
@@ -28,6 +28,10 @@
 #include <string.h>
 #include <stdlib.h>
+#if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET
+# define DARWIN7 /* Darwin 7 or newer, i.e. MacOS X 10.3 or newer */
+#endif
 #if defined _WIN32 || defined __WIN32__
 # define WIN32_NATIVE
 #endif
@@ -112,7 +116,7 @@ get_charset_aliases (void)
  cp = charset_aliases;
  if (cp == NULL)
    {
-#if !(defined VMS || defined WIN32_NATIVE || defined __CYGWIN__)
+#if !(defined DARWIN7 || defined VMS || defined WIN32_NATIVE || defined __CYGWIN__)
      FILE *fp;
      const char *dir;
      const char *base = "charset.alias";
@@ -213,6 +217,39 @@ get_charset_aliases (void)
 #else
+# if defined DARWIN7
+      /* To avoid the trouble of installing a file that is shared by many
+         GNU packages -- many packaging systems have problems with this --,
+         simply inline the aliases here.  */
+      cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
+           "ISO8859-2" "\0" "ISO-8859-2" "\0"
+           "ISO8859-4" "\0" "ISO-8859-4" "\0"
+           "ISO8859-5" "\0" "ISO-8859-5" "\0"
+           "ISO8859-7" "\0" "ISO-8859-7" "\0"
+           "ISO8859-9" "\0" "ISO-8859-9" "\0"
+           "ISO8859-13" "\0" "ISO-8859-13" "\0"
+           "ISO8859-15" "\0" "ISO-8859-15" "\0"
+           "KOI8-R" "\0" "KOI8-R" "\0"
+           "KOI8-U" "\0" "KOI8-U" "\0"
+           "CP866" "\0" "CP866" "\0"
+           "CP949" "\0" "CP949" "\0"
+           "CP1131" "\0" "CP1131" "\0"
+           "CP1251" "\0" "CP1251" "\0"
+           "eucCN" "\0" "GB2312" "\0"
+           "GB2312" "\0" "GB2312" "\0"
+           "eucJP" "\0" "EUC-JP" "\0"
+           "eucKR" "\0" "EUC-KR" "\0"
+           "Big5" "\0" "BIG5" "\0"
+           "Big5HKSCS" "\0" "BIG5-HKSCS" "\0"
+           "GBK" "\0" "GBK" "\0"
+           "GB18030" "\0" "GB18030" "\0"
+           "SJIS" "\0" "SHIFT_JIS" "\0"
+           "ARMSCII-8" "\0" "ARMSCII-8" "\0"
+           "PT154" "\0" "PT154" "\0"
+         /*"ISCII-DEV" "\0" "?" "\0"*/
+           "*" "\0" "UTF-8" "\0";
+# endif
 # if defined VMS
      /* To avoid the troubles of an extra file charset.alias_vms in the
         sources of many GNU packages, simply inline the aliases here.  */
diff --git a/gl/m4/00gnulib.m4 b/gl/m4/00gnulib.m4
new file mode 100644
index 00000000..d4d04d15
--- /dev/null
+++ b/gl/m4/00gnulib.m4
@@ -0,0 +1,30 @@
+# 00gnulib.m4 serial 2
+dnl Copyright (C) 2009 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl This file must be named something that sorts before all other
+dnl gnulib-provided .m4 files.  It is needed until such time as we can
+dnl assume Autoconf 2.64, with its improved AC_DEFUN_ONCE semantics.
+# AC_DEFUN_ONCE([NAME], VALUE)
+# ----------------------------
+# Define NAME to expand to VALUE on the first use (whether by direct
+# expansion, or by AC_REQUIRE), and to nothing on all subsequent uses.
+# Avoid bugs in AC_REQUIRE in Autoconf 2.63 and earlier.  This
+# definition is slower than the version in Autoconf 2.64, because it
+# can only use interfaces that existed since 2.59; but it achieves the
+# same effect.  Quoting is necessary to avoid confusing Automake.
+m4_version_prereq([2.63.263], [],
+[m4_define([AC][_DEFUN_ONCE],
+  [AC][_DEFUN([$1],
+    [AC_REQUIRE([_gl_DEFUN_ONCE([$1])],
+      [m4_indir([_gl_DEFUN_ONCE([$1])])])])]dnl
+[AC][_DEFUN([_gl_DEFUN_ONCE([$1])], [$2])])])
+# gl_00GNULIB
+# -----------
+# Witness macro that this file has been included.  Needed to force
+# Automake to include this file prior to all other gnulib .m4 files.
+AC_DEFUN([gl_00GNULIB])
diff --git a/gl/m4/btowc.m4 b/gl/m4/btowc.m4
index 64ff8290..b46f74fb 100644
--- a/gl/m4/btowc.m4
+++ b/gl/m4/btowc.m4
@@ -1,5 +1,5 @@
-# btowc.m4 serial 3
+# btowc.m4 serial 4
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -47,7 +47,7 @@ int main ()
 }],
            [gl_cv_func_btowc_eof=yes],
            [gl_cv_func_btowc_eof=no],
-            [])
+            [:])
        fi
      ])
    case "$gl_cv_func_btowc_eof" in
diff --git a/gl/m4/c-strtod.m4 b/gl/m4/c-strtod.m4
index 0514f2d4..ba954354 100644
--- a/gl/m4/c-strtod.m4
+++ b/gl/m4/c-strtod.m4
@@ -1,4 +1,4 @@
-# c-strtod.m4 serial 10
+# c-strtod.m4 serial 11
 # Copyright (C) 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -39,6 +39,8 @@ AC_DEFUN([gl_C_STRTOD],
  dnl Prerequisites of lib/c-strtod.c.
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([AC_C_INLINE])
  :
 ])
@@ -49,5 +51,7 @@ AC_DEFUN([gl_C_STRTOLD],
  dnl Prerequisites of lib/c-strtold.c.
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  AC_REQUIRE([gl_C99_STRTOLD])
+  AC_REQUIRE([AC_C_INLINE])
  :
 ])
diff --git a/gl/m4/errno_h.m4 b/gl/m4/errno_h.m4
index 0682d1ab..16188d9b 100644
--- a/gl/m4/errno_h.m4
+++ b/gl/m4/errno_h.m4
@@ -1,17 +1,10 @@
-# errno_h.m4 serial 3
+# errno_h.m4 serial 5
 dnl Copyright (C) 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
-AC_DEFUN([gl_HEADER_ERRNO_H],
+AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],
-[
-  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
-  dnl once only, before all statements that occur in other macros.
-  AC_REQUIRE([gl_HEADER_ERRNO_H_BODY])
-])
-AC_DEFUN([gl_HEADER_ERRNO_H_BODY],
 [
  AC_REQUIRE([AC_PROG_CC])
  AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
diff --git a/gl/m4/extensions.m4 b/gl/m4/extensions.m4
index 611fcfdb..ba6d5e19 100644
--- a/gl/m4/extensions.m4
+++ b/gl/m4/extensions.m4
@@ -1,7 +1,7 @@
-# serial 6  -*- Autoconf -*-
+# serial 8  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
-# Copyright (C) 2003, 2006-2008 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2009 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -20,7 +20,7 @@
 # AC_DEFINE.  The goal here is to define all known feature-enabling
 # macros, then, if reports of conflicts are made, disable macros that
 # cause problems on some platforms (such as __EXTENSIONS__).
-AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
+AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
 [AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
 AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
@@ -90,5 +90,15 @@ AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
 # ------------------------
 # Enable extensions on systems that normally disable them,
 # typically due to standards-conformance issues.
-AC_DEFUN([gl_USE_SYSTEM_EXTENSIONS],
+AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS],
-  [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])])
+[
+  dnl Require this macro before AC_USE_SYSTEM_EXTENSIONS.
+  dnl gnulib does not need it. But if it gets required by third-party macros
+  dnl after AC_USE_SYSTEM_EXTENSIONS is required, autoconf 2.62..2.63 emit a
+  dnl warning: "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS".
+  dnl Note: We can do this only for one of the macros AC_AIX, AC_GNU_SOURCE,
+  dnl AC_MINIX. If people still use AC_AIX or AC_MINIX, they are out of luck.
+  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+])
diff --git a/gl/m4/fcntl_h.m4 b/gl/m4/fcntl_h.m4
index 4a7fc42b..1ae0b15a 100644
--- a/gl/m4/fcntl_h.m4
+++ b/gl/m4/fcntl_h.m4
@@ -9,6 +9,8 @@ dnl Written by Paul Eggert.
 AC_DEFUN([gl_FCNTL_H],
 [
  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
+  dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
  AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
    [AC_RUN_IFELSE(
       [AC_LANG_PROGRAM(
diff --git a/gl/m4/floorf.m4 b/gl/m4/floorf.m4
index 8cdaa946..915e5664 100644
--- a/gl/m4/floorf.m4
+++ b/gl/m4/floorf.m4
@@ -1,5 +1,5 @@
-# floorf.m4 serial 3
+# floorf.m4 serial 4
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -34,7 +34,7 @@ AC_DEFUN([gl_FUNC_FLOORF],
 # Sets FLOORF_LIBM.
 AC_DEFUN([gl_FUNC_FLOORF_LIBS],
 [
-  AC_CACHE_VAL([gl_cv_func_floorf_libm], [
+  gl_CACHE_VAL_SILENT([gl_cv_func_floorf_libm], [
    gl_cv_func_floorf_libm=?
    AC_TRY_LINK([
       #ifndef __NO_MATH_INLINES
diff --git a/gl/m4/gnulib-common.m4 b/gl/m4/gnulib-common.m4
index 5804eb9b..c8fda203 100644
--- a/gl/m4/gnulib-common.m4
+++ b/gl/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 7
+# gnulib-common.m4 serial 11
 dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -8,6 +8,7 @@ dnl with or without modifications, as long as this notice is preserved.
 # is expanded unconditionally through gnulib-tool magic.
 AC_DEFUN([gl_COMMON], [
  dnl Use AC_REQUIRE here, so that the code is expanded once only.
+  AC_REQUIRE([gl_00GNULIB])
  AC_REQUIRE([gl_COMMON_BODY])
 ])
 AC_DEFUN([gl_COMMON_BODY], [
@@ -52,7 +53,7 @@ m4_ifndef([m4_foreach_w],
 # is a backport of autoconf-2.60's AC_PROG_MKDIR_P.
 # Remove this macro when we can assume autoconf >= 2.60.
 m4_ifdef([AC_PROG_MKDIR_P], [], [
-  AC_DEFUN([AC_PROG_MKDIR_P],
+  AC_DEFUN_ONCE([AC_PROG_MKDIR_P],
    [AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
     MKDIR_P='$(mkdir_p)'
     AC_SUBST([MKDIR_P])])])
@@ -99,3 +100,25 @@ AC_DEFUN([AC_C_RESTRICT],
   *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
 esac
 ])
+# gl_BIGENDIAN
+# is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
+# Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some
+# macros invoke AC_C_BIGENDIAN with arguments.
+AC_DEFUN([gl_BIGENDIAN],
+[
+  AC_C_BIGENDIAN
+])
+# gl_CACHE_VAL_SILENT(cache-id, command-to-set-it)
+# is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not
+# output a spurious "(cached)" mark in the midst of other configure output.
+# This macro should be used instead of AC_CACHE_VAL when it is not surrounded
+# by an AC_MSG_CHECKING/AC_MSG_RESULT pair.
+AC_DEFUN([gl_CACHE_VAL_SILENT],
+[
+  saved_as_echo_n="$as_echo_n"
+  as_echo_n=':'
+  AC_CACHE_VAL([$1], [$2])
+  as_echo_n="$saved_as_echo_n"
+])
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index c6171dea..005cc4eb 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -25,7 +25,6 @@ AC_DEFUN([gl_EARLY],
  m4_pattern_allow([^gl_LIBOBJS$])dnl a variable
  m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
  AC_REQUIRE([AC_PROG_RANLIB])
-  AC_REQUIRE([AC_GNU_SOURCE])
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 ])
@@ -116,6 +115,8 @@ AC_DEFUN([gl_INIT],
  gl_STDINT_H
  gl_STDIO_H
  gl_STDLIB_H
+  gl_FUNC_STRDUP_POSIX
+  gl_STRING_MODULE_INDICATOR([strdup])
  gl_FUNC_STRERROR
  gl_STRING_MODULE_INDICATOR([strerror])
  gl_HEADER_STRING_H
@@ -124,7 +125,6 @@ AC_DEFUN([gl_INIT],
  gl_FUNC_STRNLEN
  gl_STRING_MODULE_INDICATOR([strnlen])
  gl_HEADER_SYS_SOCKET
-  gl_MODULE_INDICATOR([sys_socket])
  AC_PROG_MKDIR_P
  gl_HEADER_TIME_H
  gl_TIME_R
@@ -282,6 +282,7 @@ AC_DEFUN([gltests_LIBSOURCES], [
 AC_DEFUN([gl_FILE_LIST], [
  build-aux/config.rpath
  build-aux/link-warning.h
+  lib/alignof.h
  lib/alloca.c
  lib/alloca.in.h
  lib/arpa_inet.in.h
@@ -367,6 +368,7 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/stdio-write.c
  lib/stdio.in.h
  lib/stdlib.in.h
+  lib/strdup.c
  lib/streq.h
  lib/strerror.c
  lib/string.in.h
@@ -395,6 +397,7 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/xsize.h
  lib/xstrndup.c
  lib/xstrndup.h
+  m4/00gnulib.m4
  m4/alloca.m4
  m4/arpa_inet_h.m4
  m4/base64.m4
@@ -478,6 +481,7 @@ AC_DEFUN([gl_FILE_LIST], [
  m4/stdint_h.m4
  m4/stdio_h.m4
  m4/stdlib_h.m4
+  m4/strdup.m4
  m4/strerror.m4
  m4/string_h.m4
  m4/strndup.m4
diff --git a/gl/m4/include_next.m4 b/gl/m4/include_next.m4
index 062753c5..d6101fe3 100644
--- a/gl/m4/include_next.m4
+++ b/gl/m4/include_next.m4
@@ -1,5 +1,5 @@
-# include_next.m4 serial 10
+# include_next.m4 serial 12
-dnl Copyright (C) 2006-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -32,14 +32,15 @@ AC_DEFUN([gl_INCLUDE_NEXT],
    [gl_cv_have_include_next],
    [rm -rf conftestd1a conftestd1b conftestd2
     mkdir conftestd1a conftestd1b conftestd2
-     dnl The include of <stdio.h> is because IBM C 9.0 on AIX 6.1 supports
+     dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on
-     dnl include_next when used as first preprocessor directive in a file,
+     dnl AIX 6.1 support include_next when used as first preprocessor directive
-     dnl but not when preceded by another include directive. Additionally,
+     dnl in a file, but not when preceded by another include directive. Check
-     dnl with this same compiler, include_next is a no-op when used in a
+     dnl for this bug by including <stdio.h>.
-     dnl header file that was included by specifying its absolute file name.
+     dnl Additionally, with this same compiler, include_next is a no-op when
-     dnl Despite these two bugs, include_next is used in the compiler's
+     dnl used in a header file that was included by specifying its absolute
-     dnl <math.h>. By virtue of the second bug, we need to use include_next
+     dnl file name. Despite these two bugs, include_next is used in the
-     dnl as well in this case.
+     dnl compiler's <math.h>. By virtue of the second bug, we need to use
+     dnl include_next as well in this case.
     cat <<EOF > conftestd1a/conftest.h
 #define DEFINED_IN_CONFTESTD1
 #include_next <conftest.h>
diff --git a/gl/m4/inet_ntop.m4 b/gl/m4/inet_ntop.m4
index 42bfc5e4..2bbdca10 100644
--- a/gl/m4/inet_ntop.m4
+++ b/gl/m4/inet_ntop.m4
@@ -1,4 +1,4 @@
-# inet_ntop.m4 serial 8
+# inet_ntop.m4 serial 9
 dnl Copyright (C) 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -11,7 +11,18 @@ AC_DEFUN([gl_INET_NTOP],
  gl_REPLACE_ARPA_INET_H
-  AC_REPLACE_FUNCS([inet_ntop])
+  dnl The AC_SEARCH_LIBS call is a hack to persuade the Solaris 8 linker to
+  dnl find inet_ntop.
+  dnl
+  dnl It is the responsibility of gl_INET_NTOP's caller to arrange for
+  dnl -lnsl if it is needed.  Normally -lnsl is not needed on Solaris 8,
+  dnl since inet_ntop is needed only by getaddrinfo, and getaddrinfo
+  dnl isn't built on Solaris 8.
+  gl_save_LIBS=$LIBS
+  AC_SEARCH_LIBS([inet_ntop], [nsl], [],
+    [AC_REPLACE_FUNCS([inet_ntop])])
+  LIBS=$gl_save_LIBS
  gl_PREREQ_INET_NTOP
 ])
diff --git a/gl/m4/lib-link.m4 b/gl/m4/lib-link.m4
index fcd3391b..21442033 100644
--- a/gl/m4/lib-link.m4
+++ b/gl/m4/lib-link.m4
@@ -1,4 +1,4 @@
-# lib-link.m4 serial 18 (gettext-0.18)
+# lib-link.m4 serial 19 (gettext-0.18)
 dnl Copyright (C) 2001-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -43,12 +43,13 @@ AC_DEFUN([AC_LIB_LINKFLAGS],
  popdef([Name])
 ])
-dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode)
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
 dnl searches for libname and the libraries corresponding to explicit and
 dnl implicit dependencies, together with the specified include files and
-dnl the ability to compile and link the specified testcode. If found, it
+dnl the ability to compile and link the specified testcode. The missing-message
-dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and
+dnl defaults to 'no' and may contain additional hints for the user.
-dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
+dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
 dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
 dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
 dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
@@ -74,12 +75,14 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
    ac_save_LIBS="$LIBS"
    LIBS="$LIBS $LIB[]NAME"
-    AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no])
+    AC_TRY_LINK([$3], [$4],
+      [ac_cv_lib[]Name=yes],
+      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
    LIBS="$ac_save_LIBS"
  ])
  if test "$ac_cv_lib[]Name" = yes; then
    HAVE_LIB[]NAME=yes
-    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.])
+    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib[]$1 library.])
    AC_MSG_CHECKING([how to link with lib[]$1])
    AC_MSG_RESULT([$LIB[]NAME])
  else
diff --git a/gl/m4/lib-prefix.m4 b/gl/m4/lib-prefix.m4
index 3bdc0fc5..4b7ee335 100644
--- a/gl/m4/lib-prefix.m4
+++ b/gl/m4/lib-prefix.m4
@@ -1,5 +1,5 @@
-# lib-prefix.m4 serial 6 (gettext-0.18)
+# lib-prefix.m4 serial 7 (gettext-0.18)
-dnl Copyright (C) 2001-2005, 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2005, 2008-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -206,6 +206,9 @@ sixtyfour bits
          if test -d "$searchdir"; then
            case "$searchdir" in
              */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
+              */../ | */.. )
+                # Better ignore directories of this form. They are misleading.
+                ;;
              *) searchdir=`cd "$searchdir" && pwd`
                 case "$searchdir" in
                   */lib64 ) acl_libdirstem=lib64 ;;
diff --git a/gl/m4/locale-fr.m4 b/gl/m4/locale-fr.m4
index e471839e..653a5bc2 100644
--- a/gl/m4/locale-fr.m4
+++ b/gl/m4/locale-fr.m4
@@ -1,4 +1,4 @@
-# locale-fr.m4 serial 10
+# locale-fr.m4 serial 11
 dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,25 +12,7 @@ AC_DEFUN([gt_LOCALE_FR],
  AC_REQUIRE([AC_CANONICAL_HOST])
  AC_REQUIRE([AM_LANGINFO_CODESET])
  AC_CACHE_CHECK([for a traditional french locale], [gt_cv_locale_fr], [
-    macosx=
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([
-changequote(,)dnl
-    case "$host_os" in
-      darwin[56]*) ;;
-      darwin*) macosx=yes;;
-    esac
-changequote([,])dnl
-    if test -n "$macosx"; then
-      # On Darwin 7 (MacOS X), the libc supports some locales in non-UTF-8
-      # encodings, but the kernel does not support them. The documentation
-      # says:
-      #   "... all code that calls BSD system routines should ensure
-      #    that the const *char parameters of these routines are in UTF-8
-      #    encoding. All BSD system functions expect their string
-      #    parameters to be in UTF-8 encoding and nothing else."
-      # See the comments in config.charset. Therefore we bypass the test.
-      gt_cv_locale_fr=none
-    else
-      AC_LANG_CONFTEST([AC_LANG_SOURCE([
 changequote(,)dnl
 #include <locale.h>
 #include <time.h>
@@ -75,42 +57,41 @@ int main () {
  return 0;
 }
 changequote([,])dnl
-        ])])
+      ])])
-      if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
-        # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+      # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
-        # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
+      # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
-        # configure script would override the LC_ALL setting. Likewise for
+      # configure script would override the LC_ALL setting. Likewise for
-        # LC_CTYPE, which is also set at the beginning of the configure script.
+      # LC_CTYPE, which is also set at the beginning of the configure script.
-        # Test for the usual locale name.
+      # Test for the usual locale name.
-        if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+      if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-          gt_cv_locale_fr=fr_FR
+        gt_cv_locale_fr=fr_FR
+      else
+        # Test for the locale name with explicit encoding suffix.
+        if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+          gt_cv_locale_fr=fr_FR.ISO-8859-1
        else
-          # Test for the locale name with explicit encoding suffix.
+          # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
-          if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+          if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-            gt_cv_locale_fr=fr_FR.ISO-8859-1
+            gt_cv_locale_fr=fr_FR.ISO8859-1
          else
-            # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name.
+            # Test for the HP-UX locale name.
-            if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-              gt_cv_locale_fr=fr_FR.ISO8859-1
+              gt_cv_locale_fr=fr_FR.iso88591
            else
-              # Test for the HP-UX locale name.
+              # Test for the Solaris 7 locale name.
-              if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                gt_cv_locale_fr=fr_FR.iso88591
+                gt_cv_locale_fr=fr
              else
-                # Test for the Solaris 7 locale name.
+                # None found.
-                if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                gt_cv_locale_fr=none
-                  gt_cv_locale_fr=fr
-                else
-                  # None found.
-                  gt_cv_locale_fr=none
-                fi
              fi
            fi
          fi
        fi
      fi
-      rm -fr conftest*
    fi
+    rm -fr conftest*
  ])
  LOCALE_FR=$gt_cv_locale_fr
  AC_SUBST([LOCALE_FR])
diff --git a/gl/m4/locale-ja.m4 b/gl/m4/locale-ja.m4
index c80c5af9..93605764 100644
--- a/gl/m4/locale-ja.m4
+++ b/gl/m4/locale-ja.m4
@@ -1,4 +1,4 @@
-# locale-ja.m4 serial 6
+# locale-ja.m4 serial 7
 dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,25 +12,7 @@ AC_DEFUN([gt_LOCALE_JA],
  AC_REQUIRE([AC_CANONICAL_HOST])
  AC_REQUIRE([AM_LANGINFO_CODESET])
  AC_CACHE_CHECK([for a traditional japanese locale], [gt_cv_locale_ja], [
-    macosx=
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([
-changequote(,)dnl
-    case "$host_os" in
-      darwin[56]*) ;;
-      darwin*) macosx=yes;;
-    esac
-changequote([,])dnl
-    if test -n "$macosx"; then
-      # On Darwin 7 (MacOS X), the libc supports some locales in non-UTF-8
-      # encodings, but the kernel does not support them. The documentation
-      # says:
-      #   "... all code that calls BSD system routines should ensure
-      #    that the const *char parameters of these routines are in UTF-8
-      #    encoding. All BSD system functions expect their string
-      #    parameters to be in UTF-8 encoding and nothing else."
-      # See the comments in config.charset. Therefore we bypass the test.
-      gt_cv_locale_ja=none
-    else
-      AC_LANG_CONFTEST([AC_LANG_SOURCE([
 changequote(,)dnl
 #include <locale.h>
 #include <time.h>
@@ -79,47 +61,46 @@ int main ()
  return 0;
 }
 changequote([,])dnl
-        ])])
+      ])])
-      if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
-        # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+      # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
-        # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
+      # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
-        # configure script would override the LC_ALL setting. Likewise for
+      # configure script would override the LC_ALL setting. Likewise for
-        # LC_CTYPE, which is also set at the beginning of the configure script.
+      # LC_CTYPE, which is also set at the beginning of the configure script.
-        # Test for the AIX locale name.
+      # Test for the AIX locale name.
-        if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+      if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-          gt_cv_locale_ja=ja_JP
+        gt_cv_locale_ja=ja_JP
+      else
+        # Test for the locale name with explicit encoding suffix.
+        if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+          gt_cv_locale_ja=ja_JP.EUC-JP
        else
-          # Test for the locale name with explicit encoding suffix.
+          # Test for the HP-UX, OSF/1, NetBSD locale name.
-          if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+          if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-            gt_cv_locale_ja=ja_JP.EUC-JP
+            gt_cv_locale_ja=ja_JP.eucJP
          else
-            # Test for the HP-UX, OSF/1, NetBSD locale name.
+            # Test for the IRIX, FreeBSD locale name.
-            if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+            if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-              gt_cv_locale_ja=ja_JP.eucJP
+              gt_cv_locale_ja=ja_JP.EUC
            else
-              # Test for the IRIX, FreeBSD locale name.
+              # Test for the Solaris 7 locale name.
-              if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+              if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-                gt_cv_locale_ja=ja_JP.EUC
+                gt_cv_locale_ja=ja
              else
-                # Test for the Solaris 7 locale name.
+                # Special test for NetBSD 1.6.
-                if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+                if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
-                  gt_cv_locale_ja=ja
+                  gt_cv_locale_ja=ja_JP.eucJP
                else
-                  # Special test for NetBSD 1.6.
+                  # None found.
-                  if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+                  gt_cv_locale_ja=none
-                    gt_cv_locale_ja=ja_JP.eucJP
-                  else
-                    # None found.
-                    gt_cv_locale_ja=none
-                  fi
                fi
              fi
            fi
          fi
        fi
      fi
-      rm -fr conftest*
    fi
+    rm -fr conftest*
  ])
  LOCALE_JA=$gt_cv_locale_ja
  AC_SUBST([LOCALE_JA])
diff --git a/gl/m4/locale-zh.m4 b/gl/m4/locale-zh.m4
index ba7f9c5c..36a5f1df 100644
--- a/gl/m4/locale-zh.m4
+++ b/gl/m4/locale-zh.m4
@@ -1,4 +1,4 @@
-# locale-zh.m4 serial 5
+# locale-zh.m4 serial 6
 dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,25 +12,7 @@ AC_DEFUN([gt_LOCALE_ZH_CN],
  AC_REQUIRE([AC_CANONICAL_HOST])
  AC_REQUIRE([AM_LANGINFO_CODESET])
  AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [
-    macosx=
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([
-changequote(,)dnl
-    case "$host_os" in
-      darwin[56]*) ;;
-      darwin*) macosx=yes;;
-    esac
-changequote([,])dnl
-    if test -n "$macosx"; then
-      # On Darwin 7 (MacOS X), the libc supports some locales in non-UTF-8
-      # encodings, but the kernel does not support them. The documentation
-      # says:
-      #   "... all code that calls BSD system routines should ensure
-      #    that the const *char parameters of these routines are in UTF-8
-      #    encoding. All BSD system functions expect their string
-      #    parameters to be in UTF-8 encoding and nothing else."
-      # See the comments in config.charset. Therefore we bypass the test.
-      gt_cv_locale_zh_CN=none
-    else
-      AC_LANG_CONFTEST([AC_LANG_SOURCE([
 changequote(,)dnl
 #include <locale.h>
 #include <stdlib.h>
@@ -80,31 +62,30 @@ int main ()
  return 0;
 }
 changequote([,])dnl
-        ])])
+      ])])
-      if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
-        # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+      # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
-        # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
+      # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
-        # configure script would override the LC_ALL setting. Likewise for
+      # configure script would override the LC_ALL setting. Likewise for
-        # LC_CTYPE, which is also set at the beginning of the configure script.
+      # LC_CTYPE, which is also set at the beginning of the configure script.
-        # Test for the locale name without encoding suffix.
+      # Test for the locale name without encoding suffix.
-        if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+      if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
-          gt_cv_locale_zh_CN=zh_CN
+        gt_cv_locale_zh_CN=zh_CN
+      else
+        # Test for the locale name with explicit encoding suffix.
+        if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+          gt_cv_locale_zh_CN=zh_CN.GB18030
        else
-          # Test for the locale name with explicit encoding suffix.
+          # None found.
-          if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+          gt_cv_locale_zh_CN=none
-            gt_cv_locale_zh_CN=zh_CN.GB18030
-          else
-            # None found.
-            gt_cv_locale_zh_CN=none
-          fi
        fi
-      else
-        # If there was a link error, due to mblen(), the system is so old that
-        # it certainly doesn't have a chinese locale.
-        gt_cv_locale_zh_CN=none
      fi
-      rm -fr conftest*
+    else
+      # If there was a link error, due to mblen(), the system is so old that
+      # it certainly doesn't have a chinese locale.
+      gt_cv_locale_zh_CN=none
    fi
+    rm -fr conftest*
  ])
  LOCALE_ZH_CN=$gt_cv_locale_zh_CN
  AC_SUBST([LOCALE_ZH_CN])
diff --git a/gl/m4/mbrtowc.m4 b/gl/m4/mbrtowc.m4
index 726497b6..11d7d23e 100644
--- a/gl/m4/mbrtowc.m4
+++ b/gl/m4/mbrtowc.m4
@@ -1,4 +1,4 @@
-# mbrtowc.m4 serial 13
+# mbrtowc.m4 serial 15
 dnl Copyright (C) 2001-2002, 2004-2005, 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -65,9 +65,15 @@ AC_DEFUN([gl_MBSTATE_T_BROKEN],
  AC_CHECK_FUNCS_ONCE([mbrtowc])
  if test $ac_cv_func_mbsinit = yes && test $ac_cv_func_mbrtowc = yes; then
    gl_MBRTOWC_INCOMPLETE_STATE
+    gl_MBRTOWC_SANITYCHECK
+    REPLACE_MBSTATE_T=0
    case "$gl_cv_func_mbrtowc_incomplete_state" in
-      *yes) REPLACE_MBSTATE_T=0 ;;
+      *yes) ;;
-      *)    REPLACE_MBSTATE_T=1 ;;
+      *) REPLACE_MBSTATE_T=1 ;;
+    esac
+    case "$gl_cv_func_mbrtowc_sanitycheck" in
+      *yes) ;;
+      *) REPLACE_MBSTATE_T=1 ;;
    esac
  else
    REPLACE_MBSTATE_T=1
@@ -121,7 +127,58 @@ int main ()
 }],
          [gl_cv_func_mbrtowc_incomplete_state=yes],
          [gl_cv_func_mbrtowc_incomplete_state=no],
-          [])
+          [:])
+      fi
+    ])
+])
+dnl Test whether mbrtowc works not worse than mbtowc.
+dnl Result is gl_cv_func_mbrtowc_sanitycheck.
+AC_DEFUN([gl_MBRTOWC_SANITYCHECK],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gt_LOCALE_ZH_CN])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc],
+    [gl_cv_func_mbrtowc_sanitycheck],
+    [
+      dnl Initial guess, used when cross-compiling or when no suitable locale
+      dnl is present.
+changequote(,)dnl
+      case "$host_os" in
+                    # Guess no on Solaris 8.
+        solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
+                    # Guess yes otherwise.
+        *)          gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
+      esac
+changequote([,])dnl
+      if test $LOCALE_ZH_CN != none; then
+        AC_TRY_RUN([
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+  /* This fails on Solaris 8:
+     mbrtowc returns 2, and sets wc to 0x00F0.
+     mbtowc returns 4 (correct) and sets wc to 0x5EDC.  */
+  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+    {
+      char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
+      mbstate_t state;
+      wchar_t wc;
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 6, &state) != 4
+          && mbtowc (&wc, input + 3, 6) == 4)
+        return 1;
+    }
+  return 0;
+}],
+          [gl_cv_func_mbrtowc_sanitycheck=yes],
+          [gl_cv_func_mbrtowc_sanitycheck=no],
+          [:])
      fi
    ])
 ])
@@ -168,7 +225,7 @@ int main ()
        return 1;
    }
  return 0;
-}], [gl_cv_func_mbrtowc_null_arg=yes], [gl_cv_func_mbrtowc_null_arg=no], [])
+}], [gl_cv_func_mbrtowc_null_arg=yes], [gl_cv_func_mbrtowc_null_arg=no], [:])
      fi
    ])
 ])
@@ -238,7 +295,7 @@ int main ()
 }],
          [gl_cv_func_mbrtowc_retval=yes],
          [gl_cv_func_mbrtowc_retval=no],
-          [])
+          [:])
      fi
    ])
 ])
@@ -258,10 +315,10 @@ AC_DEFUN([gl_MBRTOWC_NUL_RETVAL],
      dnl is present.
 changequote(,)dnl
      case "$host_os" in
-                    # Guess no on Solaris 9.
+                       # Guess no on Solaris 8 and 9.
-        solaris2.9) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
+        solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
-                    # Guess yes otherwise.
+                       # Guess yes otherwise.
-        *)          gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
+        *)             gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
      esac
 changequote([,])dnl
      if test $LOCALE_ZH_CN != none; then
@@ -271,7 +328,7 @@ changequote([,])dnl
 #include <wchar.h>
 int main ()
 {
-  /* This fails on Solaris 9.  */
+  /* This fails on Solaris 8 and 9.  */
  if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
    {
      mbstate_t state;
@@ -285,7 +342,7 @@ int main ()
 }],
          [gl_cv_func_mbrtowc_nul_retval=yes],
          [gl_cv_func_mbrtowc_nul_retval=no],
-          [])
+          [:])
      fi
    ])
 ])
diff --git a/gl/m4/mktime.m4 b/gl/m4/mktime.m4
index 223b9f1f..1e926e86 100644
--- a/gl/m4/mktime.m4
+++ b/gl/m4/mktime.m4
@@ -1,4 +1,4 @@
-# serial 14
+# serial 15
 dnl Copyright (C) 2002-2003, 2005-2007, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -15,6 +15,13 @@ dnl From Jim Meyering.
 AC_DEFUN([AC_FUNC_MKTIME],
 [AC_CHECK_HEADERS_ONCE([unistd.h])
 AC_CHECK_FUNCS_ONCE([alarm])
+AC_REQUIRE([gl_MULTIARCH])
+if test $APPLE_UNIVERSAL_BUILD = 1; then
+  # A universal build on Apple MacOS X platforms.
+  # The test result would be 'yes' in 32-bit mode and 'no' in 64-bit mode.
+  # But we need a configuration result that is valid in both modes.
+  ac_cv_func_working_mktime=no
+fi
 AC_CACHE_CHECK([for working mktime], [ac_cv_func_working_mktime],
 [AC_RUN_IFELSE([AC_LANG_SOURCE(
 [[/* Test program from Paul Eggert and Tony Leneis.  */
diff --git a/gl/m4/multiarch.m4 b/gl/m4/multiarch.m4
index 7b73e15e..ec377bac 100644
--- a/gl/m4/multiarch.m4
+++ b/gl/m4/multiarch.m4
@@ -1,5 +1,5 @@
-# multiarch.m4 serial 3
+# multiarch.m4 serial 5
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -19,16 +19,7 @@ dnl with or without modifications, as long as this notice is preserved.
 # Detect this situation and set the macro AA_APPLE_UNIVERSAL_BUILD at the
 # beginning of config.h and set APPLE_UNIVERSAL_BUILD accordingly.
-AC_DEFUN([gl_MULTIARCH],
+AC_DEFUN_ONCE([gl_MULTIARCH],
-[
-  dnl This AC_REQUIRE is not necessary in theory. It works around a bug in
-  dnl autoconf <= 2.63: AC_REQUIRE invocations inside AC_REQUIREd macros are
-  dnl being handled better than AC_REQUIRE invocations inside normally invoked
-  dnl macros.
-  AC_REQUIRE([gl_MULTIARCH_BODY])
-])
-AC_DEFUN([gl_MULTIARCH_BODY],
 [
  dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN.
  gl_cv_c_multiarch=no
diff --git a/gl/m4/printf.m4 b/gl/m4/printf.m4
index 4d109935..87aa45c5 100644
--- a/gl/m4/printf.m4
+++ b/gl/m4/printf.m4
@@ -1,4 +1,4 @@
-# printf.m4 serial 26
+# printf.m4 serial 33
 dnl Copyright (C) 2003, 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -125,7 +125,8 @@ changequote([,])dnl
 ])
 dnl Test whether the *printf family of functions supports infinite and NaN
-dnl 'double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001)
+dnl 'double' arguments and negative zero arguments in the %f, %e, %g
+dnl directives. (ISO C99, POSIX:2001)
 dnl Result is gl_cv_func_printf_infinite.
 AC_DEFUN([gl_PRINTF_INFINITE],
@@ -156,6 +157,13 @@ strisnan (const char *string, size_t start_index, size_t end_index)
    }
  return 0;
 }
+static int
+have_minus_zero ()
+{
+  static double plus_zero = 0.0;
+  double minus_zero = - plus_zero;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
 static char buf[10000];
 static double zero = 0.0;
 int main ()
@@ -187,6 +195,11 @@ int main ()
  if (sprintf (buf, "%g", zero / zero) < 0
      || !strisnan (buf, 0, strlen (buf)))
    return 1;
+  /* This test fails on HP-UX 10.20.  */
+  if (have_minus_zero ())
+    if (sprintf (buf, "%g", - zero) < 0
+        || strcmp (buf, "-0") != 0)
+    return 1;
  return 0;
 }], [gl_cv_func_printf_infinite=yes], [gl_cv_func_printf_infinite=no],
      [
@@ -225,7 +238,7 @@ AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE],
 [
  AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
  AC_REQUIRE([AC_PROG_CC])
-  AC_REQUIRE([AC_C_BIGENDIAN])
+  AC_REQUIRE([gl_BIGENDIAN])
  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  dnl The user can set or unset the variable gl_printf_safe to indicate
  dnl that he wishes a safe handling of non-IEEE-754 'long double' values.
@@ -545,7 +558,7 @@ int main ()
  if (sprintf (buf, "%F", 1.0 / 0.0) < 0
      || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0))
    return 1;
-  /* This catches a Cygwin 2007 bug.  */
+  /* This catches a Cygwin 1.5.x bug.  */
  if (sprintf (buf, "%.F", 1234.0) < 0
      || strcmp (buf, "1234") != 0)
    return 1;
@@ -612,6 +625,84 @@ changequote([,])dnl
    ])
 ])
+dnl Test whether the *printf family of functions supports the %ls format
+dnl directive and in particular, when a precision is specified, whether
+dnl the functions stop converting the wide string argument when the number
+dnl of bytes that have been produced by this conversion equals or exceeds
+dnl the precision.
+dnl Result is gl_cv_func_printf_directive_ls.
+AC_DEFUN([gl_PRINTF_DIRECTIVE_LS],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether printf supports the 'ls' directive],
+    [gl_cv_func_printf_directive_ls],
+    [
+      AC_TRY_RUN([
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+#include <string.h>
+int main ()
+{
+  char buf[100];
+  /* Test whether %ls works at all.
+     This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on
+     Cygwin 1.5.  */
+  {
+    static const wchar_t wstring[] = { 'a', 'b', 'c', 0 };
+    buf[0] = '\0';
+    if (sprintf (buf, "%ls", wstring) < 0
+        || strcmp (buf, "abc") != 0)
+      return 1;
+  }
+  /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an
+     assertion failure inside libc), but not on OpenBSD 4.0.  */
+  {
+    static const wchar_t wstring[] = { 'a', 0 };
+    buf[0] = '\0';
+    if (sprintf (buf, "%ls", wstring) < 0
+        || strcmp (buf, "a") != 0)
+      return 1;
+  }
+  /* Test whether precisions in %ls are supported as specified in ISO C 99
+     section 7.19.6.1:
+       "If a precision is specified, no more than that many bytes are written
+        (including shift sequences, if any), and the array shall contain a
+        null wide character if, to equal the multibyte character sequence
+        length given by the precision, the function would need to access a
+        wide character one past the end of the array."
+     This test fails on Solaris 10.  */
+  {
+    static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 };
+    buf[0] = '\0';
+    if (sprintf (buf, "%.2ls", wstring) < 0
+        || strcmp (buf, "ab") != 0)
+      return 1;
+  }
+  return 0;
+}], [gl_cv_func_printf_directive_ls=yes], [gl_cv_func_printf_directive_ls=no],
+      [
+changequote(,)dnl
+       case "$host_os" in
+         openbsd*)        gl_cv_func_printf_directive_ls="guessing no";;
+         irix*)           gl_cv_func_printf_directive_ls="guessing no";;
+         solaris*)        gl_cv_func_printf_directive_ls="guessing no";;
+         cygwin*)         gl_cv_func_printf_directive_ls="guessing no";;
+         beos* | haiku*)  gl_cv_func_printf_directive_ls="guessing no";;
+         *)               gl_cv_func_printf_directive_ls="guessing yes";;
+       esac
+changequote([,])dnl
+      ])
+    ])
+])
 dnl Test whether the *printf family of functions supports POSIX/XSI format
 dnl strings with positions. (POSIX:2001)
 dnl Result is gl_cv_func_printf_positions.
@@ -1142,7 +1233,7 @@ AC_DEFUN([gl_SNPRINTF_SIZE1],
 #include <stdio.h>
 int main()
 {
-  static char buf[8] = "DEADBEEF";
+  static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
  snprintf (buf, 1, "%d", 12345);
  return buf[1] != 'E';
 }],
@@ -1160,7 +1251,7 @@ dnl     ---------------------------------------------------------------------
 dnl     #include <stdio.h>
 dnl     int main()
 dnl     {
-dnl       static char buf[8] = "DEADBEEF";
+dnl       static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
 dnl       snprintf (buf, 0, "%d", 12345);
 dnl       return buf[0] != 'D';
 dnl     }
@@ -1181,7 +1272,7 @@ dnl       return ret;
 dnl     }
 dnl     int main()
 dnl     {
-dnl       static char buf[8] = "DEADBEEF";
+dnl       static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
 dnl       my_snprintf (buf, 0, "%d", 12345);
 dnl       return buf[0] != 'D';
 dnl     }
@@ -1209,7 +1300,7 @@ static int my_snprintf (char *buf, int size, const char *format, ...)
 }
 int main()
 {
-  static char buf[8] = "DEADBEEF";
+  static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
  my_snprintf (buf, 0, "%d", 12345);
  return buf[0] != 'D';
 }],
@@ -1261,18 +1352,19 @@ dnl 4 = gl_PRINTF_INFINITE_LONG_DOUBLE
 dnl 5 = gl_PRINTF_DIRECTIVE_A
 dnl 6 = gl_PRINTF_DIRECTIVE_F
 dnl 7 = gl_PRINTF_DIRECTIVE_N
-dnl 8 = gl_PRINTF_POSITIONS
+dnl 8 = gl_PRINTF_DIRECTIVE_LS
-dnl 9 = gl_PRINTF_FLAG_GROUPING
+dnl 9 = gl_PRINTF_POSITIONS
-dnl 10 = gl_PRINTF_FLAG_LEFTADJUST
+dnl 10 = gl_PRINTF_FLAG_GROUPING
-dnl 11 = gl_PRINTF_FLAG_ZERO
+dnl 11 = gl_PRINTF_FLAG_LEFTADJUST
-dnl 12 = gl_PRINTF_PRECISION
+dnl 12 = gl_PRINTF_FLAG_ZERO
-dnl 13 = gl_PRINTF_ENOMEM
+dnl 13 = gl_PRINTF_PRECISION
-dnl 14 = gl_SNPRINTF_PRESENCE
+dnl 14 = gl_PRINTF_ENOMEM
-dnl 15 = gl_SNPRINTF_TRUNCATION_C99
+dnl 15 = gl_SNPRINTF_PRESENCE
-dnl 16 = gl_SNPRINTF_RETVAL_C99
+dnl 16 = gl_SNPRINTF_TRUNCATION_C99
-dnl 17 = gl_SNPRINTF_DIRECTIVE_N
+dnl 17 = gl_SNPRINTF_RETVAL_C99
-dnl 18 = gl_SNPRINTF_SIZE1
+dnl 18 = gl_SNPRINTF_DIRECTIVE_N
-dnl 19 = gl_VSNPRINTF_ZEROSIZE_C99
+dnl 19 = gl_SNPRINTF_SIZE1
+dnl 20 = gl_VSNPRINTF_ZEROSIZE_C99
 dnl
 dnl 1 = checking whether printf supports size specifiers as in C99...
 dnl 2 = checking whether printf supports 'long double' arguments...
@@ -1281,42 +1373,44 @@ dnl 4 = checking whether printf supports infinite 'long double' arguments...
 dnl 5 = checking whether printf supports the 'a' and 'A' directives...
 dnl 6 = checking whether printf supports the 'F' directive...
 dnl 7 = checking whether printf supports the 'n' directive...
-dnl 8 = checking whether printf supports POSIX/XSI format strings with positions...
+dnl 8 = checking whether printf supports the 'ls' directive...
-dnl 9 = checking whether printf supports the grouping flag...
+dnl 9 = checking whether printf supports POSIX/XSI format strings with positions...
-dnl 10 = checking whether printf supports the left-adjust flag correctly...
+dnl 10 = checking whether printf supports the grouping flag...
-dnl 11 = checking whether printf supports the zero flag correctly...
+dnl 11 = checking whether printf supports the left-adjust flag correctly...
-dnl 12 = checking whether printf supports large precisions...
+dnl 12 = checking whether printf supports the zero flag correctly...
-dnl 13 = checking whether printf survives out-of-memory conditions...
+dnl 13 = checking whether printf supports large precisions...
-dnl 14 = checking for snprintf...
+dnl 14 = checking whether printf survives out-of-memory conditions...
-dnl 15 = checking whether snprintf truncates the result as in C99...
+dnl 15 = checking for snprintf...
-dnl 16 = checking whether snprintf returns a byte count as in C99...
+dnl 16 = checking whether snprintf truncates the result as in C99...
-dnl 17 = checking whether snprintf fully supports the 'n' directive...
+dnl 17 = checking whether snprintf returns a byte count as in C99...
-dnl 18 = checking whether snprintf respects a size of 1...
+dnl 18 = checking whether snprintf fully supports the 'n' directive...
-dnl 19 = checking whether vsnprintf respects a zero size as in C99...
+dnl 19 = checking whether snprintf respects a size of 1...
+dnl 20 = checking whether vsnprintf respects a zero size as in C99...
 dnl
 dnl . = yes, # = no.
 dnl
-dnl                                  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19
+dnl                                  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20
-dnl   glibc 2.5                      .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
+dnl   glibc 2.5                      .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
-dnl   glibc 2.3.6                    .  .  .  .  #  .  .  .  .  .  .  .  .  .  .  .  .  .  .
+dnl   glibc 2.3.6                    .  .  .  .  #  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
-dnl   FreeBSD 5.4, 6.1               .  .  .  .  #  .  .  .  .  .  #  .  #  .  .  .  .  .  .
+dnl   FreeBSD 5.4, 6.1               .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
-dnl   MacOS X 10.3.9                 .  .  .  .  #  .  .  .  .  .  #  .  #  .  .  .  .  .  .
+dnl   MacOS X 10.3.9                 .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
-dnl   OpenBSD 3.9, 4.0               .  .  #  #  #  #  .  .  #  .  #  .  #  .  .  .  .  .  .
+dnl   OpenBSD 3.9, 4.0               .  .  #  #  #  #  .  #  .  #  .  #  .  #  .  .  .  .  .  .
-dnl   Cygwin 2007 (= Cygwin 1.5.24)  .  .  .  .  #  #  .  .  .  ?  #  ?  ?  .  .  .  .  .  .
+dnl   Cygwin 1.7.0 (2009)            .  .  .  #  .  .  .  ?  .  .  .  .  .  ?  .  .  .  .  .  .
-dnl   Cygwin 2006 (= Cygwin 1.5.19)  #  .  .  .  #  #  .  .  #  ?  #  ?  ?  .  .  .  .  .  .
+dnl   Cygwin 1.5.25 (2008)           .  .  .  #  #  .  .  #  .  .  .  .  .  #  .  .  .  .  .  .
-dnl   Solaris 10                     .  .  #  #  #  .  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Cygwin 1.5.19 (2006)           #  .  .  #  #  #  .  #  .  #  .  #  #  #  .  .  .  .  .  .
-dnl   Solaris 2.6 ... 9              #  .  #  #  #  #  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Solaris 10                     .  .  #  #  #  .  .  #  .  .  .  #  .  .  .  .  .  .  .  .
-dnl   Solaris 2.5.1                  #  .  #  #  #  #  .  .  .  .  #  .  .  #  #  #  #  #  #
+dnl   Solaris 2.6 ... 9              #  .  #  #  #  #  .  #  .  .  .  #  .  .  .  .  .  .  .  .
-dnl   AIX 5.2                        .  .  #  #  #  .  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Solaris 2.5.1                  #  .  #  #  #  #  .  #  .  .  .  #  .  .  #  #  #  #  #  #
-dnl   AIX 4.3.2, 5.1                 #  .  #  #  #  #  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   AIX 5.2                        .  .  #  #  #  .  .  .  .  .  .  #  .  .  .  .  .  .  .  .
-dnl   HP-UX 11.31                    .  .  .  .  #  .  .  .  .  .  #  .  .  .  .  #  #  .  .
+dnl   AIX 4.3.2, 5.1                 #  .  #  #  #  #  .  .  .  .  .  #  .  .  .  .  .  .  .  .
-dnl   HP-UX 11.{00,11,23}            #  .  .  .  #  #  .  .  .  .  #  .  .  .  .  #  #  .  #
+dnl   HP-UX 11.31                    .  .  .  .  #  .  .  .  .  .  .  #  .  .  .  .  #  #  .  .
-dnl   HP-UX 10.20                    #  .  .  .  #  #  .  .  .  #  #  .  .  .  .  #  #  ?  #
+dnl   HP-UX 11.{00,11,23}            #  .  .  .  #  #  .  .  .  .  .  #  .  .  .  .  #  #  .  #
-dnl   IRIX 6.5                       #  .  #  #  #  #  .  .  .  .  #  .  .  .  .  #  .  .  .
+dnl   HP-UX 10.20                    #  .  #  .  #  #  .  ?  .  .  #  #  .  .  .  .  #  #  ?  #
-dnl   OSF/1 5.1                      #  .  #  #  #  #  .  .  .  .  #  .  .  .  .  #  .  .  #
+dnl   IRIX 6.5                       #  .  #  #  #  #  .  #  .  .  .  #  .  .  .  .  #  .  .  .
-dnl   OSF/1 4.0d                     #  .  #  #  #  #  .  .  .  .  #  .  .  #  #  #  #  #  #
+dnl   OSF/1 5.1                      #  .  #  #  #  #  .  .  .  .  .  #  .  .  .  .  #  .  .  #
-dnl   NetBSD 4.0                     .  ?  ?  ?  ?  ?  .  .  ?  ?  ?  ?  ?  .  .  .  ?  ?  ?
+dnl   OSF/1 4.0d                     #  .  #  #  #  #  .  .  .  .  .  #  .  .  #  #  #  #  #  #
-dnl   NetBSD 3.0                     .  .  .  .  #  #  .  #  #  ?  #  .  #  .  .  .  .  .  .
+dnl   NetBSD 4.0                     .  ?  ?  ?  ?  ?  .  ?  .  ?  ?  ?  ?  ?  .  .  .  ?  ?  ?
-dnl   Haiku                          .  .  .  #  #  #  .  .  .  .  .  .  ?  .  .  .  .  .  .
+dnl   NetBSD 3.0                     .  .  .  .  #  #  .  ?  #  #  ?  #  .  #  .  .  .  .  .  .
-dnl   BeOS                           #  #  .  #  #  #  .  #  .  ?  .  #  ?  .  .  .  .  .  .
+dnl   Haiku                          .  .  .  #  #  #  .  #  .  .  .  .  .  ?  .  .  .  .  .  .
-dnl   mingw                          #  #  #  #  #  #  .  #  #  .  #  #  ?  .  #  #  #  .  .
+dnl   BeOS                           #  #  .  #  #  #  .  ?  #  .  ?  .  #  ?  .  .  .  .  .  .
+dnl   mingw                          #  #  #  #  #  #  .  .  #  #  .  #  #  ?  .  #  #  #  .  .
diff --git a/gl/m4/regex.m4 b/gl/m4/regex.m4
index 43b04638..aef53d29 100644
--- a/gl/m4/regex.m4
+++ b/gl/m4/regex.m4
@@ -1,4 +1,4 @@
-# serial 53
+# serial 54
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
 # 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
@@ -18,12 +18,9 @@ AC_DEFUN([gl_REGEX],
  AC_ARG_WITH([included-regex],
    [AS_HELP_STRING([--without-included-regex],
-                    [don't compile regex; this is the default on 32-bit
+                    [don't compile regex; this is the default on systems
-                     systems with recent-enough versions of the GNU C
+                     with recent-enough versions of the GNU C Library
-                     Library (use with caution on other systems).
+                     (use with caution on other systems).])])
-                     On systems with 64-bit ptrdiff_t and 32-bit int,
-                     --with-included-regex is the default, in case
-                     regex functions operate on very long strings (>2GB)])])
  case $with_included_regex in #(
  yes|no) ac_use_included_regex=$with_included_regex
diff --git a/gl/m4/stdint.m4 b/gl/m4/stdint.m4
index b4194c8a..a2e8bdd6 100644
--- a/gl/m4/stdint.m4
+++ b/gl/m4/stdint.m4
@@ -1,4 +1,4 @@
-# stdint.m4 serial 33
+# stdint.m4 serial 34
 dnl Copyright (C) 2001-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -201,7 +201,75 @@ struct s {
  int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1;
 };
         ]])],
-         [gl_cv_header_working_stdint_h=yes])])
+         [dnl Determine whether the various *_MIN, *_MAX macros are usable
+          dnl in preprocessor expression. We could do it by compiling a test
+          dnl program for each of these macros. It is faster to run a program
+          dnl that inspects the macro expansion.
+          dnl This detects a bug on HP-UX 11.23/ia64.
+          AC_RUN_IFELSE([
+            AC_LANG_PROGRAM([[
+#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */
+#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#include <stdint.h>
+]
+gl_STDINT_INCLUDES
+[
+#include <stdio.h>
+#include <string.h>
+#define MVAL(macro) MVAL1(macro)
+#define MVAL1(expression) #expression
+static const char *macro_values[] =
+  {
+#ifdef INT8_MAX
+    MVAL (INT8_MAX),
+#endif
+#ifdef INT16_MAX
+    MVAL (INT16_MAX),
+#endif
+#ifdef INT32_MAX
+    MVAL (INT32_MAX),
+#endif
+#ifdef INT64_MAX
+    MVAL (INT64_MAX),
+#endif
+#ifdef UINT8_MAX
+    MVAL (UINT8_MAX),
+#endif
+#ifdef UINT16_MAX
+    MVAL (UINT16_MAX),
+#endif
+#ifdef UINT32_MAX
+    MVAL (UINT32_MAX),
+#endif
+#ifdef UINT64_MAX
+    MVAL (UINT64_MAX),
+#endif
+    NULL
+  };
+]], [[
+  const char **mv;
+  for (mv = macro_values; *mv != NULL; mv++)
+    {
+      const char *value = *mv;
+      /* Test whether it looks like a cast expression.  */
+      if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0
+          || strncmp (value, "((unsigned short)"/*)*/, 17) == 0
+          || strncmp (value, "((unsigned char)"/*)*/, 16) == 0
+          || strncmp (value, "((int)"/*)*/, 6) == 0
+          || strncmp (value, "((signed short)"/*)*/, 15) == 0
+          || strncmp (value, "((signed char)"/*)*/, 14) == 0)
+        return 1;
+    }
+  return 0;
+]])],
+              [gl_cv_header_working_stdint_h=yes],
+              [],
+              [dnl When cross-compiling, assume it works.
+               gl_cv_header_working_stdint_h=yes
+              ])
+         ])
+      ])
  fi
  if test "$gl_cv_header_working_stdint_h" = yes; then
    STDINT_H=
diff --git a/gl/m4/stdio_h.m4 b/gl/m4/stdio_h.m4
index 60b4bd79..846b65d3 100644
--- a/gl/m4/stdio_h.m4
+++ b/gl/m4/stdio_h.m4
@@ -1,5 +1,5 @@
-# stdio_h.m4 serial 14
+# stdio_h.m4 serial 15
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -53,6 +53,8 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
  GNULIB_VPRINTF_POSIX=0;        AC_SUBST([GNULIB_VPRINTF_POSIX])
  GNULIB_VSNPRINTF=0;            AC_SUBST([GNULIB_VSNPRINTF])
  GNULIB_VSPRINTF_POSIX=0;       AC_SUBST([GNULIB_VSPRINTF_POSIX])
+  GNULIB_DPRINTF=0;              AC_SUBST([GNULIB_DPRINTF])
+  GNULIB_VDPRINTF=0;             AC_SUBST([GNULIB_VDPRINTF])
  GNULIB_VASPRINTF=0;            AC_SUBST([GNULIB_VASPRINTF])
  GNULIB_OBSTACK_PRINTF=0;       AC_SUBST([GNULIB_OBSTACK_PRINTF])
  GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
@@ -86,6 +88,10 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
  HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
  REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
  REPLACE_VSPRINTF=0;            AC_SUBST([REPLACE_VSPRINTF])
+  HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
+  REPLACE_DPRINTF=0;             AC_SUBST([REPLACE_DPRINTF])
+  HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
+  REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
  HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
  REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
  HAVE_DECL_OBSTACK_PRINTF=1;    AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
diff --git a/gl/m4/stdlib_h.m4 b/gl/m4/stdlib_h.m4
index 582db13d..b295f16b 100644
--- a/gl/m4/stdlib_h.m4
+++ b/gl/m4/stdlib_h.m4
@@ -1,5 +1,5 @@
-# stdlib_h.m4 serial 13
+# stdlib_h.m4 serial 15
-dnl Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,9 +8,20 @@ AC_DEFUN([gl_STDLIB_H],
 [
  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
  gl_CHECK_NEXT_HEADERS([stdlib.h])
+  AC_CHECK_HEADERS([random.h], [], [], [AC_INCLUDES_DEFAULT])
+  if test $ac_cv_header_random_h = yes; then
+    HAVE_RANDOM_H=1
+  else
+    HAVE_RANDOM_H=0
+  fi
+  AC_SUBST([HAVE_RANDOM_H])
  AC_CHECK_TYPES([struct random_data],
    [], [HAVE_STRUCT_RANDOM_DATA=0],
-    [[#include <stdlib.h>]])
+    [[#include <stdlib.h>
+      #if HAVE_RANDOM_H
+      # include <random.h>
+      #endif
+    ]])
 ])
 AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
diff --git a/gl/m4/strdup.m4 b/gl/m4/strdup.m4
new file mode 100644
index 00000000..d7daac2b
--- /dev/null
+++ b/gl/m4/strdup.m4
@@ -0,0 +1,38 @@
+# strdup.m4 serial 11
+dnl Copyright (C) 2002-2009 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+AC_DEFUN([gl_FUNC_STRDUP],
+[
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  AC_REPLACE_FUNCS([strdup])
+  AC_CHECK_DECLS_ONCE([strdup])
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
+  gl_PREREQ_STRDUP
+])
+AC_DEFUN([gl_FUNC_STRDUP_POSIX],
+[
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
+  if test $gl_cv_func_malloc_posix != yes; then
+    REPLACE_STRDUP=1
+    AC_LIBOBJ([strdup])
+  else
+    AC_REPLACE_FUNCS([strdup])
+  fi
+  AC_CHECK_DECLS_ONCE([strdup])
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
+  gl_PREREQ_STRDUP
+])
+# Prerequisites of lib/strdup.c.
+AC_DEFUN([gl_PREREQ_STRDUP], [:])
diff --git a/gl/m4/sys_socket_h.m4 b/gl/m4/sys_socket_h.m4
index 85a0ace8..d1cb9c20 100644
--- a/gl/m4/sys_socket_h.m4
+++ b/gl/m4/sys_socket_h.m4
@@ -1,5 +1,5 @@
 # sys_socket_h.m4 serial 12
-dnl Copyright (C) 2005-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -40,32 +40,54 @@ AC_DEFUN([gl_HEADER_SYS_SOCKET],
  else
    SYS_SOCKET_H='sys/socket.h'
  fi
+  # We need to check for ws2tcpip.h now.
+  gl_PREREQ_SYS_H_SOCKET
+  AC_CHECK_TYPES([struct sockaddr_storage],,,[
+  /* sys/types.h is not needed according to POSIX, but the
+     sys/socket.h in i386-unknown-freebsd4.10 and
+     powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+])
+  if test $ac_cv_type_struct_sockaddr_storage = no; then
+    HAVE_STRUCT_SOCKADDR_STORAGE=0
+    SYS_SOCKET_H='sys/socket.h'
+  fi
  if test -n "$SYS_SOCKET_H"; then
-    dnl Check prerequisites of the <sys/socket.h> replacement.
-    gl_CHECK_NEXT_HEADERS([sys/socket.h])
-    if test $ac_cv_header_sys_socket_h = yes; then
-      HAVE_SYS_SOCKET_H=1
-      HAVE_WS2TCPIP_H=0
-    else
-      HAVE_SYS_SOCKET_H=0
-      dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
-      dnl the check for those headers unconditional; yet cygwin reports
-      dnl that the headers are present but cannot be compiled (since on
-      dnl cygwin, all socket information should come from sys/socket.h).
-      AC_CHECK_HEADERS([ws2tcpip.h])
-      if test $ac_cv_header_ws2tcpip_h = yes; then
-        HAVE_WS2TCPIP_H=1
-      else
-        HAVE_WS2TCPIP_H=0
-      fi
-    fi
    gl_PREREQ_SYS_H_WINSOCK2
-    AC_SUBST([HAVE_SYS_SOCKET_H])
-    AC_SUBST([HAVE_WS2TCPIP_H])
  fi
  AC_SUBST([SYS_SOCKET_H])
 ])
+AC_DEFUN([gl_PREREQ_SYS_H_SOCKET],
+[
+  dnl Check prerequisites of the <sys/socket.h> replacement.
+  gl_CHECK_NEXT_HEADERS([sys/socket.h])
+  if test $ac_cv_header_sys_socket_h = yes; then
+    HAVE_SYS_SOCKET_H=1
+    HAVE_WS2TCPIP_H=0
+  else
+    HAVE_SYS_SOCKET_H=0
+    dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
+    dnl the check for those headers unconditional; yet cygwin reports
+    dnl that the headers are present but cannot be compiled (since on
+    dnl cygwin, all socket information should come from sys/socket.h).
+    AC_CHECK_HEADERS([ws2tcpip.h])
+    if test $ac_cv_header_ws2tcpip_h = yes; then
+      HAVE_WS2TCPIP_H=1
+    else
+      HAVE_WS2TCPIP_H=0
+    fi
+  fi
+  AC_SUBST([HAVE_SYS_SOCKET_H])
+  AC_SUBST([HAVE_WS2TCPIP_H])
+])
 # Common prerequisites of of the <sys/socket.h> replacement and of the
 # <sys/select.h> replacement.
 # Sets and substitutes HAVE_WINSOCK2_H.
@@ -114,4 +136,5 @@ AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
  GNULIB_SENDTO=0;      AC_SUBST([GNULIB_SENDTO])
  GNULIB_SETSOCKOPT=0;  AC_SUBST([GNULIB_SETSOCKOPT])
  GNULIB_SHUTDOWN=0;    AC_SUBST([GNULIB_SHUTDOWN])
+  HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
 ])
diff --git a/gl/m4/unistd_h.m4 b/gl/m4/unistd_h.m4
index 56852736..ff9a4ea0 100644
--- a/gl/m4/unistd_h.m4
+++ b/gl/m4/unistd_h.m4
@@ -1,5 +1,5 @@
-# unistd_h.m4 serial 16
+# unistd_h.m4 serial 17
-dnl Copyright (C) 2006-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -48,6 +48,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
  GNULIB_GETPAGESIZE=0;      AC_SUBST([GNULIB_GETPAGESIZE])
  GNULIB_GETUSERSHELL=0;     AC_SUBST([GNULIB_GETUSERSHELL])
  GNULIB_LCHOWN=0;           AC_SUBST([GNULIB_LCHOWN])
+  GNULIB_LINK=0;             AC_SUBST([GNULIB_LINK])
  GNULIB_LSEEK=0;            AC_SUBST([GNULIB_LSEEK])
  GNULIB_READLINK=0;         AC_SUBST([GNULIB_READLINK])
  GNULIB_SLEEP=0;            AC_SUBST([GNULIB_SLEEP])
@@ -63,6 +64,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
  HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
  HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
  HAVE_GETUSERSHELL=1;    AC_SUBST([HAVE_GETUSERSHELL])
+  HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
  HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
  HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
  HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
diff --git a/gl/m4/vasnprintf.m4 b/gl/m4/vasnprintf.m4
index 9e839d2b..3a1d1e01 100644
--- a/gl/m4/vasnprintf.m4
+++ b/gl/m4/vasnprintf.m4
@@ -1,4 +1,4 @@
-# vasnprintf.m4 serial 26
+# vasnprintf.m4 serial 29
 dnl Copyright (C) 2002-2004, 2006-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -52,13 +52,13 @@ AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
 ])
 # Prerequisites of lib/vasnprintf.c.
-AC_DEFUN([gl_PREREQ_VASNPRINTF],
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
 [
  AC_REQUIRE([AC_FUNC_ALLOCA])
  AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
  AC_REQUIRE([gt_TYPE_WCHAR_T])
  AC_REQUIRE([gt_TYPE_WINT_T])
-  AC_CHECK_FUNCS([snprintf wcslen])
+  AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb])
  dnl Use the _snprintf function only if it is declared (because on NetBSD it
  dnl is defined as a weak alias of snprintf; we prefer to use the latter).
  AC_CHECK_DECLS([_snprintf], , , [#include <stdio.h>])
@@ -66,7 +66,7 @@ AC_DEFUN([gl_PREREQ_VASNPRINTF],
 # Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
 # arguments.
-AC_DEFUN([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
+AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE],
 [
  AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
  case "$gl_cv_func_printf_long_double" in
@@ -150,6 +150,21 @@ AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_F],
  esac
 ])
+# Extra prerequisites of lib/vasnprintf.c for supporting the 'ls' directive.
+AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_LS],
+[
+  AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS])
+  case "$gl_cv_func_printf_directive_ls" in
+    *yes)
+      ;;
+    *)
+      AC_DEFINE([NEED_PRINTF_DIRECTIVE_LS], [1],
+        [Define if the vasnprintf implementation needs special code for
+         the 'ls' directive.])
+      ;;
+  esac
+])
 # Extra prerequisites of lib/vasnprintf.c for supporting the ' flag.
 AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_GROUPING],
 [
@@ -247,6 +262,7 @@ AC_DEFUN([gl_PREREQ_VASNPRINTF_WITH_EXTRAS],
  gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE
  gl_PREREQ_VASNPRINTF_DIRECTIVE_A
  gl_PREREQ_VASNPRINTF_DIRECTIVE_F
+  gl_PREREQ_VASNPRINTF_DIRECTIVE_LS
  gl_PREREQ_VASNPRINTF_FLAG_GROUPING
  gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST
  gl_PREREQ_VASNPRINTF_FLAG_ZERO
diff --git a/gl/m4/wchar.m4 b/gl/m4/wchar.m4
index ba8ee6ab..2e52a82a 100644
--- a/gl/m4/wchar.m4
+++ b/gl/m4/wchar.m4
@@ -1,13 +1,13 @@
 dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 dnl Written by Eric Blake.
-# wchar.m4 serial 22
+# wchar.m4 serial 23
 AC_DEFUN([gl_WCHAR_H],
 [
@@ -73,27 +73,28 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
  GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
  GNULIB_WCWIDTH=0;    AC_SUBST([GNULIB_WCWIDTH])
  dnl Assume proper GNU behavior unless another module says otherwise.
-  HAVE_BTOWC=1;        AC_SUBST([HAVE_BTOWC])
+  HAVE_BTOWC=1;         AC_SUBST([HAVE_BTOWC])
-  HAVE_MBSINIT=1;      AC_SUBST([HAVE_MBSINIT])
+  HAVE_MBSINIT=1;       AC_SUBST([HAVE_MBSINIT])
-  HAVE_MBRTOWC=1;      AC_SUBST([HAVE_MBRTOWC])
+  HAVE_MBRTOWC=1;       AC_SUBST([HAVE_MBRTOWC])
-  HAVE_MBRLEN=1;       AC_SUBST([HAVE_MBRLEN])
+  HAVE_MBRLEN=1;        AC_SUBST([HAVE_MBRLEN])
-  HAVE_MBSRTOWCS=1;    AC_SUBST([HAVE_MBSRTOWCS])
+  HAVE_MBSRTOWCS=1;     AC_SUBST([HAVE_MBSRTOWCS])
-  HAVE_MBSNRTOWCS=1;   AC_SUBST([HAVE_MBSNRTOWCS])
+  HAVE_MBSNRTOWCS=1;    AC_SUBST([HAVE_MBSNRTOWCS])
-  HAVE_WCRTOMB=1;      AC_SUBST([HAVE_WCRTOMB])
+  HAVE_WCRTOMB=1;       AC_SUBST([HAVE_WCRTOMB])
-  HAVE_WCSRTOMBS=1;    AC_SUBST([HAVE_WCSRTOMBS])
+  HAVE_WCSRTOMBS=1;     AC_SUBST([HAVE_WCSRTOMBS])
-  HAVE_WCSNRTOMBS=1;   AC_SUBST([HAVE_WCSNRTOMBS])
+  HAVE_WCSNRTOMBS=1;    AC_SUBST([HAVE_WCSNRTOMBS])
-  HAVE_DECL_WCTOB=1;   AC_SUBST([HAVE_DECL_WCTOB])
+  HAVE_DECL_WCTOB=1;    AC_SUBST([HAVE_DECL_WCTOB])
-  HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH])
+  HAVE_DECL_WCWIDTH=1;  AC_SUBST([HAVE_DECL_WCWIDTH])
-  REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T])
+  REPLACE_MBSTATE_T=0;  AC_SUBST([REPLACE_MBSTATE_T])
-  REPLACE_BTOWC=0;     AC_SUBST([REPLACE_BTOWC])
+  REPLACE_BTOWC=0;      AC_SUBST([REPLACE_BTOWC])
-  REPLACE_WCTOB=0;     AC_SUBST([REPLACE_WCTOB])
+  REPLACE_WCTOB=0;      AC_SUBST([REPLACE_WCTOB])
-  REPLACE_MBSINIT=0;   AC_SUBST([REPLACE_MBSINIT])
+  REPLACE_MBSINIT=0;    AC_SUBST([REPLACE_MBSINIT])
-  REPLACE_MBRTOWC=0;   AC_SUBST([REPLACE_MBRTOWC])
+  REPLACE_MBRTOWC=0;    AC_SUBST([REPLACE_MBRTOWC])
-  REPLACE_MBRLEN=0;    AC_SUBST([REPLACE_MBRLEN])
+  REPLACE_MBRLEN=0;     AC_SUBST([REPLACE_MBRLEN])
-  REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS])
+  REPLACE_MBSRTOWCS=0;  AC_SUBST([REPLACE_MBSRTOWCS])
-  REPLACE_MBSNRTOWCS=0;AC_SUBST([REPLACE_MBSNRTOWCS])
+  REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS])
-  REPLACE_WCRTOMB=0;   AC_SUBST([REPLACE_WCRTOMB])
+  REPLACE_WCRTOMB=0;    AC_SUBST([REPLACE_WCRTOMB])
-  REPLACE_WCSRTOMBS=0; AC_SUBST([REPLACE_WCSRTOMBS])
+  REPLACE_WCSRTOMBS=0;  AC_SUBST([REPLACE_WCSRTOMBS])
-  REPLACE_WCWIDTH=0;   AC_SUBST([REPLACE_WCWIDTH])
+  REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
-  WCHAR_H='';          AC_SUBST([WCHAR_H])
+  REPLACE_WCWIDTH=0;    AC_SUBST([REPLACE_WCWIDTH])
+  WCHAR_H='';           AC_SUBST([WCHAR_H])
 ])
diff --git a/gl/m4/wcrtomb.m4 b/gl/m4/wcrtomb.m4
index 22d94336..cb7d9263 100644
--- a/gl/m4/wcrtomb.m4
+++ b/gl/m4/wcrtomb.m4
@@ -1,5 +1,5 @@
-# wcrtomb.m4 serial 2
+# wcrtomb.m4 serial 4
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -9,12 +9,16 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
  AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  gl_MBSTATE_T_BROKEN
+  if test $REPLACE_MBSTATE_T = 1; then
+    REPLACE_WCRTOMB=1
+  fi
  AC_CHECK_FUNCS_ONCE([wcrtomb])
  if test $ac_cv_func_wcrtomb = no; then
    HAVE_WCRTOMB=0
-  else
+  fi
+  if test $HAVE_WCRTOMB != 0 && test $REPLACE_WCRTOMB != 1; then
-    dnl On OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
+    dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
    dnl returns 0 instead of 1.
    AC_REQUIRE([AC_PROG_CC])
    AC_REQUIRE([gt_LOCALE_FR])
@@ -29,10 +33,10 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
        dnl is present.
 changequote(,)dnl
        case "$host_os" in
-                           # Guess no on OSF/1 and Solaris.
+                                   # Guess no on AIX 4, OSF/1 and Solaris.
-          osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
+          aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
-                           # Guess yes otherwise.
+                                   # Guess yes otherwise.
-          *)               gl_cv_func_wcrtomb_retval="guessing yes" ;;
+          *)                       gl_cv_func_wcrtomb_retval="guessing yes" ;;
        esac
 changequote([,])dnl
        if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
@@ -67,7 +71,7 @@ int main ()
 }],
            [gl_cv_func_wcrtomb_retval=yes],
            [gl_cv_func_wcrtomb_retval=no],
-            [])
+            [:])
        fi
      ])
    case "$gl_cv_func_wcrtomb_retval" in
diff --git a/gl/math.in.h b/gl/math.in.h
index 6e1b9a2b..a0efefda 100644
--- a/gl/math.in.h
+++ b/gl/math.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <math.h>.
-   Copyright (C) 2002-2003, 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2007-2009 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
@@ -518,7 +518,8 @@ extern int gl_signbitf (float arg);
 extern int gl_signbitd (double arg);
 extern int gl_signbitl (long double arg);
 #  if __GNUC__ >= 2 && !__STRICT_ANSI__
-#   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT
+#   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
+#    define gl_signbitf_OPTIMIZED_MACRO
 #    define gl_signbitf(arg) \
       ({ union { float _value;                                         \
                  unsigned int _word[(sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
@@ -527,7 +528,8 @@ extern int gl_signbitl (long double arg);
          (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1;          \
        })
 #   endif
-#   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT
+#   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
+#    define gl_signbitd_OPTIMIZED_MACRO
 #    define gl_signbitd(arg) \
       ({ union { double _value;                                                \
                  unsigned int _word[(sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
@@ -536,7 +538,8 @@ extern int gl_signbitl (long double arg);
          (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1;          \
        })
 #   endif
-#   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT
+#   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
+#    define gl_signbitl_OPTIMIZED_MACRO
 #    define gl_signbitl(arg) \
       ({ union { long double _value;                                   \
                  unsigned int _word[(sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
diff --git a/gl/mbrtowc.c b/gl/mbrtowc.c
index 603f0060..0fec5f1c 100644
--- a/gl/mbrtowc.c
+++ b/gl/mbrtowc.c
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 1999-2002, 2005-2008 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2005-2009 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2008.
   This program is free software: you can redistribute it and/or modify
@@ -89,7 +89,7 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
        return (size_t)(-1);
      }
-    /* Here 0 < m ≤ 4.  */
+    /* Here m > 0.  */
 # if __GLIBC__
    /* Work around bug <http://sourceware.org/bugzilla/show_bug.cgi?id=9674> */
@@ -118,7 +118,7 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
         lack mbrtowc(), we use the second approach.
         The possible encodings are:
           - 8-bit encodings,
-           - EUC-JP, EUC-KR, GB2312, EUC-TW, BIG5, SJIS,
+           - EUC-JP, EUC-KR, GB2312, EUC-TW, BIG5, GB18030, SJIS,
           - UTF-8.
         Use specialized code for each.  */
      if (m >= 4 || m >= MB_CUR_MAX)
@@ -238,6 +238,39 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
              }
            goto invalid;
          }
+        if (STREQ (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
+          {
+            if (m == 1)
+              {
+                unsigned char c = (unsigned char) p[0];
+                if ((c >= 0x90 && c <= 0xe3) || (c >= 0xf8 && c <= 0xfe))
+                  goto incomplete;
+              }
+            else /* m == 2 || m == 3 */
+              {
+                unsigned char c = (unsigned char) p[0];
+                if (c >= 0x90 && c <= 0xe3)
+                  {
+                    unsigned char c2 = (unsigned char) p[1];
+                    if (c2 >= 0x30 && c2 <= 0x39)
+                      {
+                        if (m == 2)
+                          goto incomplete;
+                        else /* m == 3 */
+                          {
+                            unsigned char c3 = (unsigned char) p[2];
+                            if (c3 >= 0x81 && c3 <= 0xfe)
+                              goto incomplete;
+                          }
+                      }
+                  }
+              }
+            goto invalid;
+          }
        if (STREQ (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0))
          {
            if (m == 1)
@@ -258,10 +291,14 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
     incomplete:
      {
        size_t k = nstate;
-        /* Here 0 < k < m < 4.  */
+        /* Here 0 <= k < m < 4.  */
        pstate[++k] = s[0];
        if (k < m)
-          pstate[++k] = s[1];
+          {
+            pstate[++k] = s[1];
+            if (k < m)
+              pstate[++k] = s[2];
+          }
        if (k != m)
          abort ();
      }
diff --git a/gl/mountlist.c b/gl/mountlist.c
index 4c975c63..50e90eed 100644
--- a/gl/mountlist.c
+++ b/gl/mountlist.c
@@ -1,7 +1,6 @@
 /* mountlist.c -- return a list of mounted file systems
-   Copyright (C) 1991, 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+   Copyright (C) 1991, 1992, 1997-2009 Free Software Foundation, Inc.
-   2004, 2005, 2006, 2007 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
@@ -24,6 +23,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdint.h>
 #include "xalloc.h"
@@ -134,10 +134,6 @@
 # include "unlocked-io.h"
 #endif
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
 /* The results of open() in this file are not used with fchdir,
   therefore save some unnecessary work in fchdir.c.  */
 #undef open
@@ -300,7 +296,6 @@ fstype_to_string (int t)
 /* Return the device number from MOUNT_OPTIONS, if possible.
   Otherwise return (dev_t) -1.  */
 static dev_t
 dev_from_mount_options (char const *mount_options)
 {
@@ -327,7 +322,7 @@ dev_from_mount_options (char const *mount_options)
    }
 # endif
+  (void) mount_options;
  return -1;
 }
@@ -344,6 +339,7 @@ read_file_system_list (bool need_fs_type)
  struct mount_entry *mount_list;
  struct mount_entry *me;
  struct mount_entry **mtail = &mount_list;
+  (void) need_fs_type;
 #ifdef MOUNTED_LISTMNTENT
  {
@@ -378,7 +374,7 @@ read_file_system_list (bool need_fs_type)
 #ifdef MOUNTED_GETMNTENT1 /* GNU/Linux, 4.3BSD, SunOS, HP-UX, Dynix, Irix.  */
  {
    struct mntent *mnt;
-    char *table = MOUNTED;
+    char const *table = MOUNTED;
    FILE *fp;
    fp = setmntent (table, "r");
diff --git a/gl/regex_internal.h b/gl/regex_internal.h
index ac348112..dc322ec5 100644
--- a/gl/regex_internal.h
+++ b/gl/regex_internal.h
@@ -184,10 +184,6 @@ typedef unsigned long int bitset_word_t;
 # if BITSET_WORD_BITS <= SBC_MAX
 #  error "Invalid SBC_MAX"
 # endif
-#elif BITSET_WORD_MAX == (0xffffffff + 2) * 0xffffffff
-/* Work around a bug in 64-bit PGC (before version 6.1-2), where the
-   preprocessor mishandles large unsigned values as if they were signed.  */
-# define BITSET_WORD_BITS 64
 #else
 # error "Add case for new bitset_word_t size"
 #endif
diff --git a/gl/stdint.in.h b/gl/stdint.in.h
index f141c8f6..53aa34a8 100644
--- a/gl/stdint.in.h
+++ b/gl/stdint.in.h
@@ -435,7 +435,7 @@ typedef int _verify_intmax_size[2 * (sizeof (intmax_t) == sizeof (uintmax_t)) -
 #undef PTRDIFF_MIN
 #undef PTRDIFF_MAX
 #if @APPLE_UNIVERSAL_BUILD@
-# if _LP64
+# ifdef _LP64
 #  define PTRDIFF_MIN  _STDINT_MIN (1, 64, 0l)
 #  define PTRDIFF_MAX  _STDINT_MAX (1, 64, 0l)
 # else
@@ -463,7 +463,7 @@ typedef int _verify_intmax_size[2 * (sizeof (intmax_t) == sizeof (uintmax_t)) -
 /* size_t limit */
 #undef SIZE_MAX
 #if @APPLE_UNIVERSAL_BUILD@
-# if _LP64
+# ifdef _LP64
 #  define SIZE_MAX  _STDINT_MAX (0, 64, 0ul)
 # else
 #  define SIZE_MAX  _STDINT_MAX (0, 32, 0ul)
diff --git a/gl/stdio.in.h b/gl/stdio.in.h
index 96cb2573..cb273d76 100644
--- a/gl/stdio.in.h
+++ b/gl/stdio.in.h
@@ -216,6 +216,38 @@ extern int vsprintf (char *str, const char *format, va_list args)
     vsprintf (b, f, a))
 #endif
+#if @GNULIB_DPRINTF@
+# if @REPLACE_DPRINTF@
+#  define dprintf rpl_dprintf
+# endif
+# if @REPLACE_DPRINTF@ || !@HAVE_DPRINTF@
+extern int dprintf (int fd, const char *format, ...)
+       __attribute__ ((__format__ (__printf__, 2, 3)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef dprintf
+# define dprintf(d,f,a) \
+    (GL_LINK_WARNING ("dprintf is unportable - " \
+                      "use gnulib module dprintf for portability"), \
+     dprintf (d, f, a))
+#endif
+#if @GNULIB_VDPRINTF@
+# if @REPLACE_VDPRINTF@
+#  define vdprintf rpl_vdprintf
+# endif
+# if @REPLACE_VDPRINTF@ || !@HAVE_VDPRINTF@
+extern int vdprintf (int fd, const char *format, va_list args)
+       __attribute__ ((__format__ (__printf__, 2, 0)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vdprintf
+# define vdprintf(d,f,a) \
+    (GL_LINK_WARNING ("vdprintf is unportable - " \
+                      "use gnulib module vdprintf for portability"), \
+     vdprintf (d, f, a))
+#endif
 #if @GNULIB_VASPRINTF@
 # if @REPLACE_VASPRINTF@
 #  define asprintf rpl_asprintf
diff --git a/gl/stdlib.in.h b/gl/stdlib.in.h
index 3820b109..f99767f6 100644
--- a/gl/stdlib.in.h
+++ b/gl/stdlib.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdlib.h>.
-   Copyright (C) 1995, 2001-2004, 2006-2008 Free Software Foundation, Inc.
+   Copyright (C) 1995, 2001-2004, 2006-2009 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
@@ -41,6 +41,12 @@
 # include <sys/loadavg.h>
 #endif
+/* OSF/1 5.1 declares 'struct random_data' in <random.h>, which is included
+   from <stdlib.h> if _REENTRANT is defined.  Include it always.  */
+#if @HAVE_RANDOM_H@
+# include <random.h>
+#endif
 #if @GNULIB_RANDOM_R@ || !@HAVE_STRUCT_RANDOM_DATA@
 # include <stdint.h>
 #endif
diff --git a/gl/strdup.c b/gl/strdup.c
new file mode 100644
index 00000000..bebe5c8f
--- /dev/null
+++ b/gl/strdup.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1991, 1996, 1997, 1998, 2002, 2003, 2004, 2006, 2007 Free
+   Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   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
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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.  */
+#ifndef _LIBC
+# include <config.h>
+#endif
+/* Get specification.  */
+#include <string.h>
+#include <stdlib.h>
+#undef __strdup
+#ifdef _LIBC
+# undef strdup
+#endif
+#ifndef weak_alias
+# define __strdup strdup
+#endif
+/* Duplicate S, returning an identical malloc'd string.  */
+char *
+__strdup (const char *s)
+{
+  size_t len = strlen (s) + 1;
+  void *new = malloc (len);
+  if (new == NULL)
+    return NULL;
+  return (char *) memcpy (new, s, len);
+}
+#ifdef libc_hidden_def
+libc_hidden_def (__strdup)
+#endif
+#ifdef weak_alias
+weak_alias (__strdup, strdup)
+#endif
diff --git a/gl/strerror.c b/gl/strerror.c
index 787575fd..798d8540 100644
--- a/gl/strerror.c
+++ b/gl/strerror.c
@@ -1,6 +1,6 @@
 /* strerror.c --- POSIX compatible system error routine
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2009 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
@@ -40,94 +40,133 @@
 char *
 rpl_strerror (int n)
 {
+  char const *msg = NULL;
  /* These error messages are taken from glibc/sysdeps/gnu/errlist.c.  */
  switch (n)
    {
 # if GNULIB_defined_ETXTBSY
    case ETXTBSY:
-      return "Text file busy";
+      msg = "Text file busy";
+      break;
 # endif
 # if GNULIB_defined_ESOCK /* native Windows platforms */
    /* EWOULDBLOCK is the same as EAGAIN.  */
    case EINPROGRESS:
-      return "Operation now in progress";
+      msg = "Operation now in progress";
+      break;
    case EALREADY:
-      return "Operation already in progress";
+      msg = "Operation already in progress";
+      break;
    case ENOTSOCK:
-      return "Socket operation on non-socket";
+      msg = "Socket operation on non-socket";
+      break;
    case EDESTADDRREQ:
-      return "Destination address required";
+      msg = "Destination address required";
+      break;
    case EMSGSIZE:
-      return "Message too long";
+      msg = "Message too long";
+      break;
    case EPROTOTYPE:
-      return "Protocol wrong type for socket";
+      msg = "Protocol wrong type for socket";
+      break;
    case ENOPROTOOPT:
-      return "Protocol not available";
+      msg = "Protocol not available";
+      break;
    case EPROTONOSUPPORT:
-      return "Protocol not supported";
+      msg = "Protocol not supported";
+      break;
    case ESOCKTNOSUPPORT:
-      return "Socket type not supported";
+      msg = "Socket type not supported";
+      break;
    case EOPNOTSUPP:
-      return "Operation not supported";
+      msg = "Operation not supported";
+      break;
    case EPFNOSUPPORT:
-      return "Protocol family not supported";
+      msg = "Protocol family not supported";
+      break;
    case EAFNOSUPPORT:
-      return "Address family not supported by protocol";
+      msg = "Address family not supported by protocol";
+      break;
    case EADDRINUSE:
-      return "Address already in use";
+      msg = "Address already in use";
+      break;
    case EADDRNOTAVAIL:
-      return "Cannot assign requested address";
+      msg = "Cannot assign requested address";
+      break;
    case ENETDOWN:
-      return "Network is down";
+      msg = "Network is down";
+      break;
    case ENETUNREACH:
-      return "Network is unreachable";
+      msg = "Network is unreachable";
+      break;
    case ENETRESET:
-      return "Network dropped connection on reset";
+      msg = "Network dropped connection on reset";
+      break;
    case ECONNABORTED:
-      return "Software caused connection abort";
+      msg = "Software caused connection abort";
+      break;
    case ECONNRESET:
-      return "Connection reset by peer";
+      msg = "Connection reset by peer";
+      break;
    case ENOBUFS:
-      return "No buffer space available";
+      msg = "No buffer space available";
+      break;
    case EISCONN:
-      return "Transport endpoint is already connected";
+      msg = "Transport endpoint is already connected";
+      break;
    case ENOTCONN:
-      return "Transport endpoint is not connected";
+      msg = "Transport endpoint is not connected";
+      break;
    case ESHUTDOWN:
-      return "Cannot send after transport endpoint shutdown";
+      msg = "Cannot send after transport endpoint shutdown";
+      break;
    case ETOOMANYREFS:
-      return "Too many references: cannot splice";
+      msg = "Too many references: cannot splice";
+      break;
    case ETIMEDOUT:
-      return "Connection timed out";
+      msg = "Connection timed out";
+      break;
    case ECONNREFUSED:
-      return "Connection refused";
+      msg = "Connection refused";
+      break;
    case ELOOP:
-      return "Too many levels of symbolic links";
+      msg = "Too many levels of symbolic links";
+      break;
    case EHOSTDOWN:
-      return "Host is down";
+      msg = "Host is down";
+      break;
    case EHOSTUNREACH:
-      return "No route to host";
+      msg = "No route to host";
+      break;
    case EPROCLIM:
-      return "Too many processes";
+      msg = "Too many processes";
+      break;
    case EUSERS:
-      return "Too many users";
+      msg = "Too many users";
+      break;
    case EDQUOT:
-      return "Disk quota exceeded";
+      msg = "Disk quota exceeded";
+      break;
    case ESTALE:
-      return "Stale NFS file handle";
+      msg = "Stale NFS file handle";
+      break;
    case EREMOTE:
-      return "Object is remote";
+      msg = "Object is remote";
+      break;
 #  if HAVE_WINSOCK2_H
    /* WSA_INVALID_HANDLE maps to EBADF */
    /* WSA_NOT_ENOUGH_MEMORY maps to ENOMEM */
    /* WSA_INVALID_PARAMETER maps to EINVAL */
    case WSA_OPERATION_ABORTED:
-      return "Overlapped operation aborted";
+      msg = "Overlapped operation aborted";
+      break;
    case WSA_IO_INCOMPLETE:
-      return "Overlapped I/O event object not in signaled state";
+      msg = "Overlapped I/O event object not in signaled state";
+      break;
    case WSA_IO_PENDING:
-      return "Overlapped operations will complete later";
+      msg = "Overlapped operations will complete later";
+      break;
    /* WSAEINTR maps to EINTR */
    /* WSAEBADF maps to EBADF */
    /* WSAEACCES maps to EACCES */
@@ -172,98 +211,127 @@ rpl_strerror (int n)
    /* WSAESTALE is ESTALE */
    /* WSAEREMOTE is EREMOTE */
    case WSASYSNOTREADY:
-      return "Network subsystem is unavailable";
+      msg = "Network subsystem is unavailable";
+      break;
    case WSAVERNOTSUPPORTED:
-      return "Winsock.dll version out of range";
+      msg = "Winsock.dll version out of range";
+      break;
    case WSANOTINITIALISED:
-      return "Successful WSAStartup not yet performed";
+      msg = "Successful WSAStartup not yet performed";
+      break;
    case WSAEDISCON:
-      return "Graceful shutdown in progress";
+      msg = "Graceful shutdown in progress";
+      break;
    case WSAENOMORE: case WSA_E_NO_MORE:
-      return "No more results";
+      msg = "No more results";
+      break;
    case WSAECANCELLED: case WSA_E_CANCELLED:
-      return "Call was canceled";
+      msg = "Call was canceled";
+      break;
    case WSAEINVALIDPROCTABLE:
-      return "Procedure call table is invalid";
+      msg = "Procedure call table is invalid";
+      break;
    case WSAEINVALIDPROVIDER:
-      return "Service provider is invalid";
+      msg = "Service provider is invalid";
+      break;
    case WSAEPROVIDERFAILEDINIT:
-      return "Service provider failed to initialize";
+      msg = "Service provider failed to initialize";
+      break;
    case WSASYSCALLFAILURE:
-      return "System call failure";
+      msg = "System call failure";
+      break;
    case WSASERVICE_NOT_FOUND:
-      return "Service not found";
+      msg = "Service not found";
+      break;
    case WSATYPE_NOT_FOUND:
-      return "Class type not found";
+      msg = "Class type not found";
+      break;
    case WSAEREFUSED:
-      return "Database query was refused";
+      msg = "Database query was refused";
+      break;
    case WSAHOST_NOT_FOUND:
-      return "Host not found";
+      msg = "Host not found";
+      break;
    case WSATRY_AGAIN:
-      return "Nonauthoritative host not found";
+      msg = "Nonauthoritative host not found";
+      break;
    case WSANO_RECOVERY:
-      return "Nonrecoverable error";
+      msg = "Nonrecoverable error";
+      break;
    case WSANO_DATA:
-      return "Valid name, no data record of requested type";
+      msg = "Valid name, no data record of requested type";
+      break;
    /* WSA_QOS_* omitted */
 #  endif
 # endif
 # if GNULIB_defined_ENOMSG
    case ENOMSG:
-      return "No message of desired type";
+      msg = "No message of desired type";
+      break;
 # endif
 # if GNULIB_defined_EIDRM
    case EIDRM:
-      return "Identifier removed";
+      msg = "Identifier removed";
+      break;
 # endif
 # if GNULIB_defined_ENOLINK
    case ENOLINK:
-      return "Link has been severed";
+      msg = "Link has been severed";
+      break;
 # endif
 # if GNULIB_defined_EPROTO
    case EPROTO:
-      return "Protocol error";
+      msg = "Protocol error";
+      break;
 # endif
 # if GNULIB_defined_EMULTIHOP
    case EMULTIHOP:
-      return "Multihop attempted";
+      msg = "Multihop attempted";
+      break;
 # endif
 # if GNULIB_defined_EBADMSG
    case EBADMSG:
-      return "Bad message";
+      msg = "Bad message";
+      break;
 # endif
 # if GNULIB_defined_EOVERFLOW
    case EOVERFLOW:
-      return "Value too large for defined data type";
+      msg = "Value too large for defined data type";
+      break;
 # endif
 # if GNULIB_defined_ENOTSUP
    case ENOTSUP:
-      return "Not supported";
+      msg = "Not supported";
+      break;
 # endif
 # if GNULIB_defined_
    case ECANCELED:
-      return "Operation canceled";
+      msg = "Operation canceled";
+      break;
 # endif
    }
+  if (msg)
+    return (char *) msg;
  {
    char *result = strerror (n);
    if (result == NULL || result[0] == '\0')
      {
        static char const fmt[] = "Unknown error (%d)";
-        static char mesg[sizeof fmt + INT_STRLEN_BOUND (n)];
+        static char msg_buf[sizeof fmt + INT_STRLEN_BOUND (n)];
-        sprintf (mesg, fmt, n);
+        sprintf (msg_buf, fmt, n);
-        return mesg;
+        return msg_buf;
      }
    return result;
diff --git a/gl/sys_socket.in.h b/gl/sys_socket.in.h
index 5d9b3cdb..dadd56ac 100644
--- a/gl/sys_socket.in.h
+++ b/gl/sys_socket.in.h
@@ -1,6 +1,6 @@
 /* Provide a sys/socket header file for systems lacking it (read: MinGW)
   and for systems where it is incomplete.
-   Copyright (C) 2005-2008 Free Software Foundation, Inc.
+   Copyright (C) 2005-2009 Free Software Foundation, Inc.
   Written by Simon Josefsson.
   This program is free software; you can redistribute it and/or modify
@@ -43,6 +43,26 @@
 #ifndef _GL_SYS_SOCKET_H
 #define _GL_SYS_SOCKET_H
+#if !@HAVE_STRUCT_SOCKADDR_STORAGE@
+# include <alignof.h>
+/* Code taken from glibc sysdeps/unix/sysv/linux/bits/socket.h on
+   2009-05-08, licensed under LGPLv2.1+, plus portability fixes. */
+# define __ss_aligntype unsigned long int
+# define _SS_SIZE 256
+# define _SS_PADSIZE \
+    (_SS_SIZE - ((sizeof (sa_family_t) >= alignof (__ss_aligntype)      \
+                  ? sizeof (sa_family_t)                                \
+                  : alignof (__ss_aligntype))                           \
+                 + sizeof (__ss_aligntype)))
+struct sockaddr_storage
+{
+  sa_family_t ss_family;      /* Address family, etc.  */
+  __ss_aligntype __ss_align;  /* Force desired alignment.  */
+  char __ss_padding[_SS_PADSIZE];
+};
+#endif
 #if @HAVE_SYS_SOCKET_H@
 /* A platform that has <sys/socket.h>.  */
@@ -256,7 +276,7 @@ extern int rpl_getsockname (int, struct sockaddr *, int *);
 #  if @HAVE_WINSOCK2_H@
 #   undef getsockopt
 #   define getsockopt           rpl_getsockopt
-extern int rpl_getsockopt (int, int, int, void *, int *);
+extern int rpl_getsockopt (int, int, int, void *, socklen_t *);
 #  endif
 # elif @HAVE_WINSOCK2_H@
 #  undef getsockopt
@@ -358,7 +378,7 @@ extern int rpl_sendto (int, const void *, int, int, struct sockaddr *, int);
 #  if @HAVE_WINSOCK2_H@
 #   undef setsockopt
 #   define setsockopt           rpl_setsockopt
-extern int rpl_setsockopt (int, int, int, const void *, int);
+extern int rpl_setsockopt (int, int, int, const void *, socklen_t);
 #  endif
 # elif @HAVE_WINSOCK2_H@
 #  undef setsockopt
diff --git a/gl/unistd.in.h b/gl/unistd.in.h
index 1b2f80ee..fa8d84a3 100644
--- a/gl/unistd.in.h
+++ b/gl/unistd.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <unistd.h>.
-   Copyright (C) 2003-2008 Free Software Foundation, Inc.
+   Copyright (C) 2003-2009 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
@@ -29,7 +29,7 @@
 #ifndef _GL_UNISTD_H
 #define _GL_UNISTD_H
-/* mingw doesn't define the SEEK_* macros in <unistd.h>.  */
+/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>.  */
 #if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
 # include <stdio.h>
 #endif
@@ -87,6 +87,17 @@
 /* The definition of GL_LINK_WARNING is copied here.  */
+/* OS/2 EMX lacks these macros.  */
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
 /* Declare overridden functions.  */
 #ifdef __cplusplus
@@ -120,10 +131,6 @@ extern int chown (const char *file, uid_t uid, gid_t gid);
 #if @GNULIB_CLOSE@
-# if @UNISTD_H_HAVE_WINSOCK2_H@
-/* Need a gnulib internal function.  */
-#  define HAVE__GL_CLOSE_FD_MAYBE_SOCKET 1
-# endif
 # if @REPLACE_CLOSE@
 /* Automatically included by modules that need a replacement for close.  */
 #  undef close
@@ -475,6 +482,23 @@ extern int lchown (char const *file, uid_t owner, gid_t group);
 #endif
+#if @GNULIB_LINK@
+/* Create a new hard link for an existing file.
+   Return 0 if successful, otherwise -1 and errno set.
+   See POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/link.html>.  */
+# if !@HAVE_LINK@
+extern int link (const char *path1, const char *path2);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef link
+# define link(path1,path2) \
+    (GL_LINK_WARNING ("link is unportable - " \
+                      "use gnulib module link for portability"), \
+     link (path1, path2))
+#endif
 #if @GNULIB_LSEEK@
 # if @REPLACE_LSEEK@
 /* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
diff --git a/gl/vasnprintf.c b/gl/vasnprintf.c
index 93aef6f2..7ac9f436 100644
--- a/gl/vasnprintf.c
+++ b/gl/vasnprintf.c
@@ -1,5 +1,5 @@
 /* vsprintf with automatic memory allocation.
-   Copyright (C) 1999, 2002-2008 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002-2009 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
@@ -117,29 +117,6 @@
 # include "fpucw.h"
 #endif
-#if HAVE_WCHAR_T
-# if HAVE_WCSLEN
-#  define local_wcslen wcslen
-# else
-   /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
-      a dependency towards this library, here is a local substitute.
-      Define this substitute only once, even if this file is included
-      twice in the same compilation unit.  */
-#  ifndef local_wcslen_defined
-#   define local_wcslen_defined 1
-static size_t
-local_wcslen (const wchar_t *s)
-{
-  const wchar_t *ptr;
-  for (ptr = s; *ptr != (wchar_t) 0; ptr++)
-    ;
-  return ptr - s;
-}
-#  endif
-# endif
-#endif
 /* Default parameters.  */
 #ifndef VASNPRINTF
 # if WIDE_CHAR_VERSION
@@ -152,6 +129,7 @@ local_wcslen (const wchar_t *s)
 #  define DIRECTIVES wchar_t_directives
 #  define PRINTF_PARSE wprintf_parse
 #  define DCHAR_CPY wmemcpy
+#  define DCHAR_SET wmemset
 # else
 #  define VASNPRINTF vasnprintf
 #  define FCHAR_T char
@@ -162,6 +140,7 @@ local_wcslen (const wchar_t *s)
 #  define DIRECTIVES char_directives
 #  define PRINTF_PARSE printf_parse
 #  define DCHAR_CPY memcpy
+#  define DCHAR_SET memset
 # endif
 #endif
 #if WIDE_CHAR_VERSION
@@ -215,6 +194,64 @@ local_wcslen (const wchar_t *s)
 #undef remainder
 #define remainder rem
+#if !USE_SNPRINTF && !WIDE_CHAR_VERSION
+# if (HAVE_STRNLEN && !defined _AIX)
+#  define local_strnlen strnlen
+# else
+#  ifndef local_strnlen_defined
+#   define local_strnlen_defined 1
+static size_t
+local_strnlen (const char *string, size_t maxlen)
+{
+  const char *end = memchr (string, '\0', maxlen);
+  return end ? (size_t) (end - string) : maxlen;
+}
+#  endif
+# endif
+#endif
+#if (!USE_SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T && (WIDE_CHAR_VERSION || DCHAR_IS_TCHAR)
+# if HAVE_WCSLEN
+#  define local_wcslen wcslen
+# else
+   /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
+      a dependency towards this library, here is a local substitute.
+      Define this substitute only once, even if this file is included
+      twice in the same compilation unit.  */
+#  ifndef local_wcslen_defined
+#   define local_wcslen_defined 1
+static size_t
+local_wcslen (const wchar_t *s)
+{
+  const wchar_t *ptr;
+  for (ptr = s; *ptr != (wchar_t) 0; ptr++)
+    ;
+  return ptr - s;
+}
+#  endif
+# endif
+#endif
+#if !USE_SNPRINTF && HAVE_WCHAR_T && WIDE_CHAR_VERSION
+# if HAVE_WCSNLEN
+#  define local_wcsnlen wcsnlen
+# else
+#  ifndef local_wcsnlen_defined
+#   define local_wcsnlen_defined 1
+static size_t
+local_wcsnlen (const wchar_t *s, size_t maxlen)
+{
+  const wchar_t *ptr;
+  for (ptr = s; maxlen > 0 && *ptr != (wchar_t) 0; ptr++, maxlen--)
+    ;
+  return ptr - s;
+}
+#  endif
+# endif
+#endif
 #if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE || NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && !defined IN_LIBINTL
 /* Determine the decimal-point character according to the current locale.  */
 # ifndef decimal_point_char_defined
@@ -376,7 +413,7 @@ divide (mpn_t a, mpn_t b, mpn_t *q)
       Normalise [q[m-1],...,q[0]], yields q.
     If m>=n>1, perform a multiple-precision division:
       We have a/b < beta^(m-n+1).
-       s:=intDsize-1-(hightest bit in b[n-1]), 0<=s<intDsize.
+       s:=intDsize-1-(highest bit in b[n-1]), 0<=s<intDsize.
       Shift a and b left by s bits, copying them. r:=a.
       r=[r[m],...,r[0]], b=[b[n-1],...,b[0]] with b[n-1]>=beta/2.
       For j=m-n,...,0: {Here 0 <= r < b*beta^(j+1).}
@@ -1762,18 +1799,18 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                        size_t converted_len = allocated - length;
 #  if DCHAR_IS_TCHAR
                        /* Convert from UTF-8 to locale encoding.  */
-                        if (u8_conv_to_encoding (locale_charset (),
+                        converted =
-                                                 iconveh_question_mark,
+                          u8_conv_to_encoding (locale_charset (),
-                                                 arg, arg_end - arg, NULL,
+                                               iconveh_question_mark,
-                                                 &converted, &converted_len)
+                                               arg, arg_end - arg, NULL,
-                            < 0)
+                                               converted, &converted_len);
 #  else
                        /* Convert from UTF-8 to UTF-16/UTF-32.  */
                        converted =
                          U8_TO_DCHAR (arg, arg_end - arg,
                                       converted, &converted_len);
-                        if (converted == NULL)
 #  endif
+                        if (converted == NULL)
                          {
                            int saved_errno = errno;
                            if (!(result == resultbuf || result == NULL))
@@ -1890,18 +1927,18 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                        size_t converted_len = allocated - length;
 #  if DCHAR_IS_TCHAR
                        /* Convert from UTF-16 to locale encoding.  */
-                        if (u16_conv_to_encoding (locale_charset (),
+                        converted =
-                                                  iconveh_question_mark,
+                          u16_conv_to_encoding (locale_charset (),
-                                                  arg, arg_end - arg, NULL,
+                                                iconveh_question_mark,
-                                                  &converted, &converted_len)
+                                                arg, arg_end - arg, NULL,
-                            < 0)
+                                                converted, &converted_len);
 #  else
                        /* Convert from UTF-16 to UTF-8/UTF-32.  */
                        converted =
                          U16_TO_DCHAR (arg, arg_end - arg,
                                        converted, &converted_len);
-                        if (converted == NULL)
 #  endif
+                        if (converted == NULL)
                          {
                            int saved_errno = errno;
                            if (!(result == resultbuf || result == NULL))
@@ -2018,18 +2055,18 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                        size_t converted_len = allocated - length;
 #  if DCHAR_IS_TCHAR
                        /* Convert from UTF-32 to locale encoding.  */
-                        if (u32_conv_to_encoding (locale_charset (),
+                        converted =
-                                                  iconveh_question_mark,
+                          u32_conv_to_encoding (locale_charset (),
-                                                  arg, arg_end - arg, NULL,
+                                                iconveh_question_mark,
-                                                  &converted, &converted_len)
+                                                arg, arg_end - arg, NULL,
-                            < 0)
+                                                converted, &converted_len);
 #  else
                        /* Convert from UTF-32 to UTF-8/UTF-16.  */
                        converted =
                          U32_TO_DCHAR (arg, arg_end - arg,
                                        converted, &converted_len);
-                        if (converted == NULL)
 #  endif
+                        if (converted == NULL)
                          {
                            int saved_errno = errno;
                            if (!(result == resultbuf || result == NULL))
@@ -2066,6 +2103,522 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                  }
              }
 #endif
+#if (!USE_SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
+            else if (dp->conversion == 's'
+# if WIDE_CHAR_VERSION
+                     && a.arg[dp->arg_index].type != TYPE_WIDE_STRING
+# else
+                     && a.arg[dp->arg_index].type == TYPE_WIDE_STRING
+# endif
+                    )
+              {
+                /* The normal handling of the 's' directive below requires
+                   allocating a temporary buffer.  The determination of its
+                   length (tmp_length), in the case when a precision is
+                   specified, below requires a conversion between a char[]
+                   string and a wchar_t[] wide string.  It could be done, but
+                   we have no guarantee that the implementation of sprintf will
+                   use the exactly same algorithm.  Without this guarantee, it
+                   is possible to have buffer overrun bugs.  In order to avoid
+                   such bugs, we implement the entire processing of the 's'
+                   directive ourselves.  */
+                int flags = dp->flags;
+                int has_width;
+                size_t width;
+                int has_precision;
+                size_t precision;
+                has_width = 0;
+                width = 0;
+                if (dp->width_start != dp->width_end)
+                  {
+                    if (dp->width_arg_index != ARG_NONE)
+                      {
+                        int arg;
+                        if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->width_arg_index].a.a_int;
+                        if (arg < 0)
+                          {
+                            /* "A negative field width is taken as a '-' flag
+                                followed by a positive field width."  */
+                            flags |= FLAG_LEFT;
+                            width = (unsigned int) (-arg);
+                          }
+                        else
+                          width = arg;
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->width_start;
+                        do
+                          width = xsum (xtimes (width, 10), *digitp++ - '0');
+                        while (digitp != dp->width_end);
+                      }
+                    has_width = 1;
+                  }
+                has_precision = 0;
+                precision = 6;
+                if (dp->precision_start != dp->precision_end)
+                  {
+                    if (dp->precision_arg_index != ARG_NONE)
+                      {
+                        int arg;
+                        if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+                          abort ();
+                        arg = a.arg[dp->precision_arg_index].a.a_int;
+                        /* "A negative precision is taken as if the precision
+                            were omitted."  */
+                        if (arg >= 0)
+                          {
+                            precision = arg;
+                            has_precision = 1;
+                          }
+                      }
+                    else
+                      {
+                        const FCHAR_T *digitp = dp->precision_start + 1;
+                        precision = 0;
+                        while (digitp != dp->precision_end)
+                          precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+                        has_precision = 1;
+                      }
+                  }
+# if WIDE_CHAR_VERSION
+                /* %s in vasnwprintf.  See the specification of fwprintf.  */
+                {
+                  const char *arg = a.arg[dp->arg_index].a.a_string;
+                  const char *arg_end;
+                  size_t characters;
+                  if (has_precision)
+                    {
+                      /* Use only as many bytes as needed to produce PRECISION
+                         wide characters, from the left.  */
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      for (; precision > 0; precision--)
+                        {
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrlen (arg_end, MB_CUR_MAX, &state);
+#  else
+                          count = mblen (arg_end, MB_CUR_MAX);
+#  endif
+                          if (count == 0)
+                            /* Found the terminating NUL.  */
+                            break;
+                          if (count < 0)
+                            {
+                              /* Invalid or incomplete multibyte character.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          arg_end += count;
+                          characters++;
+                        }
+                    }
+                  else if (has_width)
+                    {
+                      /* Use the entire string, and count the number of wide
+                         characters.  */
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      for (;;)
+                        {
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrlen (arg_end, MB_CUR_MAX, &state);
+#  else
+                          count = mblen (arg_end, MB_CUR_MAX);
+#  endif
+                          if (count == 0)
+                            /* Found the terminating NUL.  */
+                            break;
+                          if (count < 0)
+                            {
+                              /* Invalid or incomplete multibyte character.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          arg_end += count;
+                          characters++;
+                        }
+                    }
+                  else
+                    {
+                      /* Use the entire string.  */
+                      arg_end = arg + strlen (arg);
+                      /* The number of characters doesn't matter.  */
+                      characters = 0;
+                    }
+                  if (has_width && width > characters
+                      && !(dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - characters;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+                  if (has_precision || has_width)
+                    {
+                      /* We know the number of wide characters in advance.  */
+                      size_t remaining;
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      ENSURE_ALLOCATION (xsum (length, characters));
+                      for (remaining = characters; remaining > 0; remaining--)
+                        {
+                          wchar_t wc;
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrtowc (&wc, arg, arg_end - arg, &state);
+#  else
+                          count = mbtowc (&wc, arg, arg_end - arg);
+#  endif
+                          if (count <= 0)
+                            /* mbrtowc not consistent with mbrlen, or mbtowc
+                               not consistent with mblen.  */
+                            abort ();
+                          result[length++] = wc;
+                          arg += count;
+                        }
+                      if (!(arg == arg_end))
+                        abort ();
+                    }
+                  else
+                    {
+#  if HAVE_MBRTOWC
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      while (arg < arg_end)
+                        {
+                          wchar_t wc;
+                          int count;
+#  if HAVE_MBRTOWC
+                          count = mbrtowc (&wc, arg, arg_end - arg, &state);
+#  else
+                          count = mbtowc (&wc, arg, arg_end - arg);
+#  endif
+                          if (count <= 0)
+                            /* mbrtowc not consistent with mbrlen, or mbtowc
+                               not consistent with mblen.  */
+                            abort ();
+                          ENSURE_ALLOCATION (xsum (length, 1));
+                          result[length++] = wc;
+                          arg += count;
+                        }
+                    }
+                  if (has_width && width > characters
+                      && (dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - characters;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+                }
+# else
+                /* %ls in vasnprintf.  See the specification of fprintf.  */
+                {
+                  const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
+                  const wchar_t *arg_end;
+                  size_t characters;
+#  if !DCHAR_IS_TCHAR
+                  /* This code assumes that TCHAR_T is 'char'.  */
+                  typedef int TCHAR_T_verify[2 * (sizeof (TCHAR_T) == 1) - 1];
+                  TCHAR_T *tmpsrc;
+                  DCHAR_T *tmpdst;
+                  size_t tmpdst_len;
+#  endif
+                  size_t w;
+                  if (has_precision)
+                    {
+                      /* Use only as many wide characters as needed to produce
+                         at most PRECISION bytes, from the left.  */
+#  if HAVE_WCRTOMB
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      while (precision > 0)
+                        {
+                          char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+                          if (*arg_end == 0)
+                            /* Found the terminating null wide character.  */
+                            break;
+#  if HAVE_WCRTOMB
+                          count = wcrtomb (buf, *arg_end, &state);
+#  else
+                          count = wctomb (buf, *arg_end);
+#  endif
+                          if (count < 0)
+                            {
+                              /* Cannot convert.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          if (precision < count)
+                            break;
+                          arg_end++;
+                          characters += count;
+                          precision -= count;
+                        }
+                    }
+#  if DCHAR_IS_TCHAR
+                  else if (has_width)
+#  else
+                  else
+#  endif
+                    {
+                      /* Use the entire string, and count the number of
+                         bytes.  */
+#  if HAVE_WCRTOMB
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#  endif
+                      arg_end = arg;
+                      characters = 0;
+                      for (;;)
+                        {
+                          char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+                          if (*arg_end == 0)
+                            /* Found the terminating null wide character.  */
+                            break;
+#  if HAVE_WCRTOMB
+                          count = wcrtomb (buf, *arg_end, &state);
+#  else
+                          count = wctomb (buf, *arg_end);
+#  endif
+                          if (count < 0)
+                            {
+                              /* Cannot convert.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
+                          arg_end++;
+                          characters += count;
+                        }
+                    }
+#  if DCHAR_IS_TCHAR
+                  else
+                    {
+                      /* Use the entire string.  */
+                      arg_end = arg + local_wcslen (arg);
+                      /* The number of bytes doesn't matter.  */
+                      characters = 0;
+                    }
+#  endif
+#  if !DCHAR_IS_TCHAR
+                  /* Convert the string into a piece of temporary memory.  */
+                  tmpsrc = (TCHAR_T *) malloc (characters * sizeof (TCHAR_T));
+                  if (tmpsrc == NULL)
+                    goto out_of_memory;
+                  {
+                    TCHAR_T *tmpptr = tmpsrc;
+                    size_t remaining;
+#   if HAVE_WCRTOMB
+                    mbstate_t state;
+                    memset (&state, '\0', sizeof (mbstate_t));
+#   endif
+                    for (remaining = characters; remaining > 0; )
+                      {
+                        char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                        int count;
+                        if (*arg == 0)
+                          abort ();
+#   if HAVE_WCRTOMB
+                        count = wcrtomb (buf, *arg, &state);
+#   else
+                        count = wctomb (buf, *arg);
+#   endif
+                        if (count <= 0)
+                          /* Inconsistency.  */
+                          abort ();
+                        memcpy (tmpptr, buf, count);
+                        tmpptr += count;
+                        arg++;
+                        remaining -= count;
+                      }
+                    if (!(arg == arg_end))
+                      abort ();
+                  }
+                  /* Convert from TCHAR_T[] to DCHAR_T[].  */
+                  tmpdst =
+                    DCHAR_CONV_FROM_ENCODING (locale_charset (),
+                                              iconveh_question_mark,
+                                              tmpsrc, characters,
+                                              NULL,
+                                              NULL, &tmpdst_len);
+                  if (tmpdst == NULL)
+                    {
+                      int saved_errno = errno;
+                      free (tmpsrc);
+                      if (!(result == resultbuf || result == NULL))
+                        free (result);
+                      if (buf_malloced != NULL)
+                        free (buf_malloced);
+                      CLEANUP ();
+                      errno = saved_errno;
+                      return NULL;
+                    }
+                  free (tmpsrc);
+#  endif
+                  if (has_width)
+                    {
+#  if ENABLE_UNISTDIO
+                      /* Outside POSIX, it's preferrable to compare the width
+                         against the number of _characters_ of the converted
+                         value.  */
+                      w = DCHAR_MBSNLEN (result + length, characters);
+#  else
+                      /* The width is compared against the number of _bytes_
+                         of the converted value, says POSIX.  */
+                      w = characters;
+#  endif
+                    }
+                  else
+                    /* w doesn't matter.  */
+                    w = 0;
+                  if (has_width && width > w
+                      && !(dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - w;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+#  if DCHAR_IS_TCHAR
+                  if (has_precision || has_width)
+                    {
+                      /* We know the number of bytes in advance.  */
+                      size_t remaining;
+#   if HAVE_WCRTOMB
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#   endif
+                      ENSURE_ALLOCATION (xsum (length, characters));
+                      for (remaining = characters; remaining > 0; )
+                        {
+                          char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+                          if (*arg == 0)
+                            abort ();
+#   if HAVE_WCRTOMB
+                          count = wcrtomb (buf, *arg, &state);
+#   else
+                          count = wctomb (buf, *arg);
+#   endif
+                          if (count <= 0)
+                            /* Inconsistency.  */
+                            abort ();
+                          memcpy (result + length, buf, count);
+                          length += count;
+                          arg++;
+                          remaining -= count;
+                        }
+                      if (!(arg == arg_end))
+                        abort ();
+                    }
+                  else
+                    {
+#   if HAVE_WCRTOMB
+                      mbstate_t state;
+                      memset (&state, '\0', sizeof (mbstate_t));
+#   endif
+                      while (arg < arg_end)
+                        {
+                          char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
+                          int count;
+                          if (*arg == 0)
+                            abort ();
+#   if HAVE_WCRTOMB
+                          count = wcrtomb (buf, *arg, &state);
+#   else
+                          count = wctomb (buf, *arg);
+#   endif
+                          if (count <= 0)
+                            /* Inconsistency.  */
+                            abort ();
+                          ENSURE_ALLOCATION (xsum (length, count));
+                          memcpy (result + length, buf, count);
+                          length += count;
+                          arg++;
+                        }
+                    }
+#  else
+                  ENSURE_ALLOCATION (xsum (length, tmpdst_len));
+                  DCHAR_CPY (result + length, tmpdst, tmpdst_len);
+                  free (tmpdst);
+                  length += tmpdst_len;
+#  endif
+                  if (has_width && width > w
+                      && (dp->flags & FLAG_LEFT))
+                    {
+                      size_t n = width - w;
+                      ENSURE_ALLOCATION (xsum (length, n));
+                      DCHAR_SET (result + length, ' ', n);
+                      length += n;
+                    }
+                }
+              }
+# endif
+#endif
 #if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
            else if ((dp->conversion == 'a' || dp->conversion == 'A')
 # if !(NEED_PRINTF_DIRECTIVE_A || (NEED_PRINTF_LONG_DOUBLE && NEED_PRINTF_DOUBLE))
@@ -4032,16 +4585,64 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
 # if HAVE_WCHAR_T
                      if (type == TYPE_WIDE_STRING)
                        {
-                          tmp_length =
+#  if WIDE_CHAR_VERSION
-                            local_wcslen (a.arg[dp->arg_index].a.a_wide_string);
+                          /* ISO C says about %ls in fwprintf:
+                               "If the precision is not specified or is greater
-#  if !WIDE_CHAR_VERSION
+                                than the size of the array, the array shall
-                          tmp_length = xtimes (tmp_length, MB_CUR_MAX);
+                                contain a null wide character."
+                             So if there is a precision, we must not use
+                             wcslen.  */
+                          const wchar_t *arg =
+                            a.arg[dp->arg_index].a.a_wide_string;
+                          if (has_precision)
+                            tmp_length = local_wcsnlen (arg, precision);
+                          else
+                            tmp_length = local_wcslen (arg);
+#  else
+                          /* ISO C says about %ls in fprintf:
+                               "If a precision is specified, no more than that
+                                many bytes are written (including shift
+                                sequences, if any), and the array shall contain
+                                a null wide character if, to equal the
+                                multibyte character sequence length given by
+                                the precision, the function would need to
+                                access a wide character one past the end of the
+                                array."
+                             So if there is a precision, we must not use
+                             wcslen.  */
+                          /* This case has already been handled above.  */
+                          abort ();
 #  endif
                        }
                      else
 # endif
-                        tmp_length = strlen (a.arg[dp->arg_index].a.a_string);
+                        {
+# if WIDE_CHAR_VERSION
+                          /* ISO C says about %s in fwprintf:
+                               "If the precision is not specified or is greater
+                                than the size of the converted array, the
+                                converted array shall contain a null wide
+                                character."
+                             So if there is a precision, we must not use
+                             strlen.  */
+                          /* This case has already been handled above.  */
+                          abort ();
+# else
+                          /* ISO C says about %s in fprintf:
+                               "If the precision is not specified or greater
+                                than the size of the array, the array shall
+                                contain a null character."
+                             So if there is a precision, we must not use
+                             strlen.  */
+                          const char *arg = a.arg[dp->arg_index].a.a_string;
+                          if (has_precision)
+                            tmp_length = local_strnlen (arg, precision);
+                          else
+                            tmp_length = strlen (arg);
+# endif
+                        }
                      break;
                    case 'p':
@@ -4614,14 +5215,13 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
 # else
                        tmpsrc = tmp;
 # endif
-                        tmpdst = NULL;
+                        tmpdst =
-                        tmpdst_len = 0;
+                          DCHAR_CONV_FROM_ENCODING (locale_charset (),
-                        if (DCHAR_CONV_FROM_ENCODING (locale_charset (),
+                                                    iconveh_question_mark,
-                                                      iconveh_question_mark,
+                                                    tmpsrc, count,
-                                                      tmpsrc, count,
+                                                    NULL,
-                                                      NULL,
+                                                    NULL, &tmpdst_len);
-                                                      &tmpdst, &tmpdst_len)
+                        if (tmpdst == NULL)
-                            < 0)
                          {
                            int saved_errno = errno;
                            if (!(result == resultbuf || result == NULL))
diff --git a/gl/wchar.in.h b/gl/wchar.in.h
index cc436b14..cc5baad3 100644
--- a/gl/wchar.in.h
+++ b/gl/wchar.in.h
@@ -264,7 +264,11 @@ extern size_t wcsrtombs (char *dest, const wchar_t **srcp, size_t len, mbstate_t
 /* Convert a wide string to a string.  */
 #if @GNULIB_WCSNRTOMBS@
-# if !@HAVE_WCSNRTOMBS@
+# if @REPLACE_WCSNRTOMBS@
+#  undef wcsnrtombs
+#  define wcsnrtombs rpl_wcsnrtombs
+# endif
+# if !@HAVE_WCSNRTOMBS@ || @REPLACE_WCSNRTOMBS@
 extern size_t wcsnrtombs (char *dest, const wchar_t **srcp, size_t srclen, size_t len, mbstate_t *ps);
 # endif
 #elif defined GNULIB_POSIXCHECK
diff --git a/gl/xmalloc.c b/gl/xmalloc.c
index 89ecf17a..585fb4b1 100644
--- a/gl/xmalloc.c
+++ b/gl/xmalloc.c
@@ -1,7 +1,7 @@
 /* xmalloc.c -- malloc with out of memory checking
   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2002, 2003, 2004, 2005, 2006, 2008 Free Software Foundation,
+   1999, 2000, 2002, 2003, 2004, 2005, 2006, 2008-2009 Free Software Foundation,
   Inc.
   This program is free software: you can redistribute it and/or modify
@@ -28,10 +28,6 @@
 #include <stdlib.h>
 #include <string.h>
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
 /* 1 if calloc is known to be compatible with GNU calloc.  This
   matters if we are not also using the calloc module, which defines
   HAVE_CALLOC and supports the GNU API even on non-GNU platforms.  */