Update gnulib files.

33 files changed, 95 insertions, 76 deletions

diff --git a/gl/m4/fseeko.m4 b/gl/m4/fseeko.m4
index 3d77365688..a370648e9f 100644
--- a/gl/m4/fseeko.m4
+++ b/gl/m4/fseeko.m4
@@ -1,5 +1,5 @@
-# fseeko.m4 serial 4
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+# fseeko.m4 serial 6
+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.
@@ -15,7 +15,8 @@ AC_DEFUN([gl_FUNC_FSEEKO],
 
   AC_CACHE_CHECK([for fseeko], [gl_cv_func_fseeko],
     [
-      AC_TRY_LINK([#include <stdio.h>], [fseeko (stdin, 0, 0);],
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
+]], [fseeko (stdin, 0, 0);])],
 	[gl_cv_func_fseeko=yes], [gl_cv_func_fseeko=no])
     ])
   if test $gl_cv_func_fseeko = no; then
@@ -31,4 +32,6 @@ AC_DEFUN([gl_REPLACE_FSEEKO],
   AC_LIBOBJ([fseeko])
   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
   REPLACE_FSEEKO=1
+  dnl If we are also using the fseek module, then fseek needs replacing, too.
+  m4_ifdef([gl_REPLACE_FSEEK], [gl_REPLACE_FSEEK])
 ])
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 045b826d02..669e6d8b1d 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -124,7 +124,6 @@ AC_SUBST([LTALLOCA])
   AC_PROG_MKDIR_P
   gl_FUNC_PERROR
   gl_STRING_MODULE_INDICATOR([perror])
-  gl_PMCCABE2HTML
   AC_CHECK_DECLS([program_invocation_name], [], [], [#include <errno.h>])
   AC_CHECK_DECLS([program_invocation_short_name], [], [], [#include <errno.h>])
   gl_FUNC_READ_FILE
@@ -481,7 +480,6 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/netdb_h.m4
   m4/netinet_in_h.m4
   m4/perror.m4
-  m4/pmccabe2html.m4
   m4/printf.m4
   m4/read-file.m4
   m4/readline.m4
diff --git a/gl/m4/inet_ntop.m4 b/gl/m4/inet_ntop.m4
index 2bbdca1088..85a6bb6808 100644
--- a/gl/m4/inet_ntop.m4
+++ b/gl/m4/inet_ntop.m4
@@ -1,4 +1,4 @@
-# inet_ntop.m4 serial 9
+# inet_ntop.m4 serial 10
 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,
@@ -11,17 +11,17 @@ AC_DEFUN([gl_INET_NTOP],
 
   gl_REPLACE_ARPA_INET_H
 
-  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.
+  dnl Most platforms that provide inet_ntop define it in libc.
+  dnl Solaris 8..10 provide inet_ntop in libnsl instead.
   gl_save_LIBS=$LIBS
   AC_SEARCH_LIBS([inet_ntop], [nsl], [],
     [AC_REPLACE_FUNCS([inet_ntop])])
   LIBS=$gl_save_LIBS
+  INET_NTOP_LIB=
+  if test "$ac_cv_search_inet_ntop" != "none needed"; then
+    INET_NTOP_LIB="$ac_cv_search_inet_ntop"
+  fi
+  AC_SUBST([INET_NTOP_LIB])
 
   gl_PREREQ_INET_NTOP
 ])
diff --git a/gl/m4/inet_pton.m4 b/gl/m4/inet_pton.m4
index e0ec432bc6..f0718016a8 100644
--- a/gl/m4/inet_pton.m4
+++ b/gl/m4/inet_pton.m4
@@ -1,4 +1,4 @@
-# inet_pton.m4 serial 7
+# inet_pton.m4 serial 8
 dnl Copyright (C) 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_PTON],
 
   gl_REPLACE_ARPA_INET_H
 
-  AC_REPLACE_FUNCS([inet_pton])
+  dnl Most platforms that provide inet_pton define it in libc.
+  dnl Solaris 8..10 provide inet_pton in libnsl instead.
+  gl_save_LIBS=$LIBS
+  AC_SEARCH_LIBS([inet_pton], [nsl], [],
+    [AC_REPLACE_FUNCS([inet_pton])])
+  LIBS=$gl_save_LIBS
+  INET_PTON_LIB=
+  if test "$ac_cv_search_inet_pton" != "none needed"; then
+    INET_PTON_LIB="$ac_cv_search_inet_pton"
+  fi
+  AC_SUBST([INET_PTON_LIB])
+
   gl_PREREQ_INET_PTON
 ])
 
diff --git a/gl/m4/pmccabe2html.m4 b/gl/m4/pmccabe2html.m4
deleted file mode 100644
index 2985f7c6d2..0000000000
--- a/gl/m4/pmccabe2html.m4
+++ /dev/null
@@ -1,14 +0,0 @@
-# pmccabe2html.m4 serial 2
-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.
-
-dnl From Simon Josefsson
-
-# Usage: gl_PMCCABE2HTML([]).
-AC_DEFUN([gl_PMCCABE2HTML],
-[
-  AC_REQUIRE([AC_PROG_AWK])
-  AC_PATH_PROG([PMCCABE], [pmccabe], [false])
-])
diff --git a/gl/m4/ungetc.m4 b/gl/m4/ungetc.m4
index 9236d4c836..eb652356b5 100644
--- a/gl/m4/ungetc.m4
+++ b/gl/m4/ungetc.m4
@@ -1,4 +1,4 @@
-# ungetc.m4 serial 1
+# ungetc.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,
@@ -12,7 +12,7 @@ AC_DEFUN_ONCE([gl_FUNC_UNGETC_WORKS],
     [gl_cv_func_ungetc_works],
     [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
 #include <stdio.h>
-      ]], [FILE *f; long l;
+      ]], [FILE *f;
 	   if (!(f = fopen ("conftest.tmp", "w+"))) return 1;
 	   if (fputs ("abc", f) < 0) return 2;
 	   rewind (f);
diff --git a/gl/sockets.c b/gl/sockets.c
index 7cb9981d12..cb169f8864 100644
--- a/gl/sockets.c
+++ b/gl/sockets.c
@@ -25,12 +25,12 @@
 #if WINDOWS_SOCKETS
 
 /* This includes winsock2.h on MinGW. */
-#include <sys/socket.h>
+# include <sys/socket.h>
 
-#include "close-hook.h"
+# include "close-hook.h"
 
 /* Get set_winsock_errno, FD_TO_SOCKET etc. */
-#include "w32sock.h"
+# include "w32sock.h"
 
 static int
 close_fd_maybe_socket (int fd, const struct close_hook *remaining_list)
@@ -71,10 +71,10 @@ static struct close_hook close_sockets_hook;
 
 static int initialized_sockets_version /* = 0 */;
 
-#endif
+#endif /* WINDOWS_SOCKETS */
 
 int
-gl_sockets_startup (int version)
+gl_sockets_startup (int version _UNUSED_PARAMETER_)
 {
 #if WINDOWS_SOCKETS
   if (version > initialized_sockets_version)
diff --git a/gl/stdio.in.h b/gl/stdio.in.h
index 5002acc6d2..ee53703826 100644
--- a/gl/stdio.in.h
+++ b/gl/stdio.in.h
@@ -227,7 +227,14 @@ extern int rpl_fseek (FILE *fp, long offset, int whence);
    fflush(), and which detect pipes.  */
 #  define fseeko rpl_fseeko
 extern int fseeko (FILE *fp, off_t offset, int whence);
-#  define fseek(fp, offset, whence) fseeko (fp, (off_t)(offset), whence)
+#  if !@GNULIB_FSEEK@
+#   undef fseek
+#   define fseek(f,o,w) \
+     (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \
+                       "on 32-bit platforms - " \
+                       "use fseeko function for handling of large files"), \
+      fseeko (f, o, w))
+#  endif
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef fseeko
@@ -263,7 +270,14 @@ extern long rpl_ftell (FILE *fp);
 # if @REPLACE_FTELLO@
 #  define ftello rpl_ftello
 extern off_t ftello (FILE *fp);
-#  define ftell(fp) ftello (fp)
+#  if !@GNULIB_FTELL@
+#   undef ftell
+#   define ftell(f) \
+     (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \
+                       "on 32-bit platforms - " \
+                       "use ftello function for handling of large files"), \
+      ftello (f))
+#  endif
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef ftello
diff --git a/gl/sys_stat.in.h b/gl/sys_stat.in.h
index 875f0644de..98b3689f78 100644
--- a/gl/sys_stat.in.h
+++ b/gl/sys_stat.in.h
@@ -456,7 +456,15 @@ int mknodat (int fd, char const *file, mode_t mode, dev_t dev);
    struct stat.  This means that rpl_stat will not be used if the user
    does (stat)(a,b).  Oh well.  */
 #  undef stat
-#  define stat(name, st) rpl_stat (name, st)
+#  ifdef _LARGE_FILES
+    /* With _LARGE_FILES defined, AIX (only) defines stat to stat64,
+       so we have to replace stat64() instead of stat(). */
+#   define stat stat64
+#   undef stat64
+#   define stat64(name, st) rpl_stat (name, st)
+#  else /* !_LARGE_FILES */
+#   define stat(name, st) rpl_stat (name, st)
+#  endif /* !_LARGE_FILES */
 extern int stat (const char *name, struct stat *buf);
 # endif
 #elif defined GNULIB_POSIXCHECK
diff --git a/gl/tests/test-arpa_inet.c b/gl/tests/test-arpa_inet.c
index fc2d8ba448..1e2479f4f9 100644
--- a/gl/tests/test-arpa_inet.c
+++ b/gl/tests/test-arpa_inet.c
@@ -1,5 +1,5 @@
 /* Test of <arpa/inet.h> substitute.
-   Copyright (C) 2007 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
@@ -21,7 +21,7 @@
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-getaddrinfo.c b/gl/tests/test-getaddrinfo.c
index eeea3f7c43..384b98b6e8 100644
--- a/gl/tests/test-getaddrinfo.c
+++ b/gl/tests/test-getaddrinfo.c
@@ -44,7 +44,8 @@
 # define EAI_SERVICE 0
 #endif
 
-int simple (char *host, char *service)
+static int
+simple (char const *host, char const *service)
 {
   char buf[BUFSIZ];
   static int skip = 0;
diff --git a/gl/tests/test-getdelim.c b/gl/tests/test-getdelim.c
index 0c112f6bd5..da4fe6b313 100644
--- a/gl/tests/test-getdelim.c
+++ b/gl/tests/test-getdelim.c
@@ -1,5 +1,5 @@
 /* Test of getdelim() function.
-   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
@@ -36,7 +36,7 @@
   while (0)
 
 int
-main (int argc, char **argv)
+main (void)
 {
   FILE *f;
   char *line = NULL;
diff --git a/gl/tests/test-getline.c b/gl/tests/test-getline.c
index 51fc816866..50722cd48d 100644
--- a/gl/tests/test-getline.c
+++ b/gl/tests/test-getline.c
@@ -1,5 +1,5 @@
 /* Test of getline() function.
-   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
@@ -36,7 +36,7 @@
   while (0)
 
 int
-main (int argc, char **argv)
+main (void)
 {
   FILE *f;
   char *line = NULL;
diff --git a/gl/tests/test-gettimeofday.c b/gl/tests/test-gettimeofday.c
index 892b18829c..3b858791a4 100644
--- a/gl/tests/test-gettimeofday.c
+++ b/gl/tests/test-gettimeofday.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2007 Free Software Foundation
+ * Copyright (C) 2005, 2007, 2009 Free Software Foundation
  * Written by Jim Meyering.
  *
  * This program is free software: you can redistribute it and/or modify
@@ -24,7 +24,7 @@
 #include <string.h>
 
 int
-main (int argc, char *argv[])
+main (void)
 {
   time_t t = 0;
   struct tm *lt;
diff --git a/gl/tests/test-memchr.c b/gl/tests/test-memchr.c
index 1124f8b587..d5e53e0081 100644
--- a/gl/tests/test-memchr.c
+++ b/gl/tests/test-memchr.c
@@ -41,7 +41,7 @@
 #define MEMCHR (char *) memchr
 
 int
-main ()
+main (void)
 {
   size_t n = 0x100000;
   char *input = malloc (n);
@@ -102,8 +102,6 @@ main ()
 
     if (page_boundary != NULL)
       {
-	int n;
-
 	for (n = 1; n <= 500; n++)
 	  {
 	    char *mem = page_boundary - n;
@@ -111,7 +109,7 @@ main ()
 	    ASSERT (MEMCHR (mem, 'U', n) == NULL);
 
 	    {
-	      int i;
+	      size_t i;
 
 	      for (i = 0; i < n; i++)
 		{
diff --git a/gl/tests/test-netinet_in.c b/gl/tests/test-netinet_in.c
index b1957197b7..5a61557c94 100644
--- a/gl/tests/test-netinet_in.c
+++ b/gl/tests/test-netinet_in.c
@@ -1,5 +1,5 @@
 /* Test of <netinet/in.h> substitute.
-   Copyright (C) 2007 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
@@ -21,7 +21,7 @@
 #include <netinet/in.h>
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-select-stdin.c b/gl/tests/test-select-stdin.c
index e855f92d20..079dec50e7 100644
--- a/gl/tests/test-select-stdin.c
+++ b/gl/tests/test-select-stdin.c
@@ -1,5 +1,5 @@
 /* Test of select() substitute, reading from stdin.
-   Copyright (C) 2008 Free Software Foundation, Inc.
+   Copyright (C) 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
@@ -25,7 +25,7 @@
 #include <unistd.h>
 
 int
-main ()
+main (void)
 {
   printf ("Applying select() from standard input. Press Ctrl-C to abort.\n");
   for (;;)
diff --git a/gl/tests/test-select.c b/gl/tests/test-select.c
index ec82250149..d6d6b063ac 100644
--- a/gl/tests/test-select.c
+++ b/gl/tests/test-select.c
@@ -84,7 +84,7 @@ test (void (*fn) (void), const char *msg)
 /* Funny socket code.  */
 
 static int
-open_server_socket ()
+open_server_socket (void)
 {
   int s, x;
   struct sockaddr_in ia;
@@ -355,7 +355,7 @@ test_pipe (void)
 /* Do them all.  */
 
 int
-main ()
+main (void)
 {
   int result;
 
diff --git a/gl/tests/test-sockets.c b/gl/tests/test-sockets.c
index 3c85a431c5..2d259649cd 100644
--- a/gl/tests/test-sockets.c
+++ b/gl/tests/test-sockets.c
@@ -22,7 +22,7 @@
 #include "sockets.h"
 
 int
-main (int argc, char *argv[])
+main (void)
 {
   int err;
 
diff --git a/gl/tests/test-stddef.c b/gl/tests/test-stddef.c
index f8484987cb..c0a7515ecc 100644
--- a/gl/tests/test-stddef.c
+++ b/gl/tests/test-stddef.c
@@ -32,7 +32,7 @@ size_t c = 2;
 verify (sizeof NULL == sizeof (void *));
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-stdint.c b/gl/tests/test-stdint.c
index a2bf42ac89..4e9b3621ee 100644
--- a/gl/tests/test-stdint.c
+++ b/gl/tests/test-stdint.c
@@ -1,5 +1,5 @@
 /* Test of <stdint.h> substitute.
-   Copyright (C) 2006-2008 Free Software Foundation, Inc.
+   Copyright (C) 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
@@ -354,7 +354,7 @@ verify_same_types (UINTMAX_C (17), (uintmax_t)0 + 0);
 
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-stdio.c b/gl/tests/test-stdio.c
index dcfe38dd51..3f2f0677f0 100644
--- a/gl/tests/test-stdio.c
+++ b/gl/tests/test-stdio.c
@@ -30,7 +30,7 @@ int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
 verify (sizeof NULL == sizeof (void *));
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-stdlib.c b/gl/tests/test-stdlib.c
index ae46ba1662..fad5cf450e 100644
--- a/gl/tests/test-stdlib.c
+++ b/gl/tests/test-stdlib.c
@@ -29,7 +29,7 @@ int exitcode;
 verify (sizeof NULL == sizeof (void *));
 
 int
-main ()
+main (void)
 {
   /* Check that some macros are defined and different integer constants.  */
   switch (exitcode)
diff --git a/gl/tests/test-strerror.c b/gl/tests/test-strerror.c
index 3d9814d5d4..27eb969a70 100644
--- a/gl/tests/test-strerror.c
+++ b/gl/tests/test-strerror.c
@@ -1,5 +1,5 @@
 /* Test of strerror() function.
-   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
@@ -37,7 +37,7 @@
   while (0)
 
 int
-main (int argc, char **argv)
+main (void)
 {
   char *str;
 
diff --git a/gl/tests/test-string.c b/gl/tests/test-string.c
index fe53cd9b15..69df747eb6 100644
--- a/gl/tests/test-string.c
+++ b/gl/tests/test-string.c
@@ -27,7 +27,7 @@
 verify (sizeof NULL == sizeof (void *));
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-sys_select.c b/gl/tests/test-sys_select.c
index 66079529ef..aef8941071 100644
--- a/gl/tests/test-sys_select.c
+++ b/gl/tests/test-sys_select.c
@@ -24,7 +24,7 @@
 struct timeval t1;
 
 int
-main ()
+main (void)
 {
   /* Check that FD_ZERO can be used.  This should not yield a warning
      such as "warning: implicit declaration of function 'memset'".  */
diff --git a/gl/tests/test-sys_socket.c b/gl/tests/test-sys_socket.c
index 3d946a83bf..ddb491b312 100644
--- a/gl/tests/test-sys_socket.c
+++ b/gl/tests/test-sys_socket.c
@@ -28,7 +28,7 @@ int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };
 #endif
 
 int
-main ()
+main (void)
 {
   struct sockaddr_storage x;
   sa_family_t i;
diff --git a/gl/tests/test-sys_stat.c b/gl/tests/test-sys_stat.c
index a73f9b81c6..4a85c9f08b 100644
--- a/gl/tests/test-sys_stat.c
+++ b/gl/tests/test-sys_stat.c
@@ -282,7 +282,7 @@ nlink_t t1;
 struct timespec t2;
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-sys_time.c b/gl/tests/test-sys_time.c
index bae4108e07..74f35acfe4 100644
--- a/gl/tests/test-sys_time.c
+++ b/gl/tests/test-sys_time.c
@@ -1,5 +1,5 @@
 /* Test of <sys/time.h> substitute.
-   Copyright (C) 2007 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
@@ -23,7 +23,7 @@
 struct timeval a;
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-time.c b/gl/tests/test-time.c
index ea8143737f..4afa3b3988 100644
--- a/gl/tests/test-time.c
+++ b/gl/tests/test-time.c
@@ -29,7 +29,7 @@ struct timespec a;
 verify (sizeof NULL == sizeof (void *));
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-unistd.c b/gl/tests/test-unistd.c
index 129367b4d7..dd907f4ebe 100644
--- a/gl/tests/test-unistd.c
+++ b/gl/tests/test-unistd.c
@@ -50,7 +50,7 @@ intptr_t t8;
 #endif
 
 int
-main ()
+main (void)
 {
   return 0;
 }
diff --git a/gl/tests/test-version-etc.c b/gl/tests/test-version-etc.c
index 71cbc8bac4..9ff97c45a8 100644
--- a/gl/tests/test-version-etc.c
+++ b/gl/tests/test-version-etc.c
@@ -24,7 +24,7 @@
 #define AUTHORS "Sergey Poznyakoff", "Eric Blake"
 
 int
-main (int argc, char **argv)
+main (int argc _UNUSED_PARAMETER_, char **argv)
 {
   set_program_name (argv[0]);
   version_etc (stdout, "test-version-etc", "dummy", "0", AUTHORS,
diff --git a/gl/tests/test-wchar.c b/gl/tests/test-wchar.c
index 28660688d2..2e60bb86db 100644
--- a/gl/tests/test-wchar.c
+++ b/gl/tests/test-wchar.c
@@ -31,7 +31,7 @@ wint_t b = 'x';
 verify (sizeof NULL == sizeof (void *));
 
 int
-main ()
+main (void)
 {
   return 0;
 }