1 files changed, 21 insertions, 5 deletions

diff --git a/gl/regex_internal.h b/gl/regex_internal.h
index dc322ec5..2cb8c4d0 100644
--- a/gl/regex_internal.h
+++ b/gl/regex_internal.h
@@ -1,6 +1,6 @@
 /* Extended regular expression matching and search library.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-   Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free
+   Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 
@@ -28,9 +28,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-#ifdef _LIBC
-# include <langinfo.h>
-#else
+#include <langinfo.h>
+#ifndef _LIBC
 # include "localcharset.h"
 #endif
 #if defined HAVE_LOCALE_H || defined _LIBC
@@ -852,4 +851,21 @@ re_string_elem_size_at (const re_string_t *pstr, Idx idx)
 }
 #endif /* RE_ENABLE_I18N */
 
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_MINOR__
+#  define __GNUC_PREREQ(maj, min) \
+         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#if __GNUC_PREREQ (3,4)
+# undef __attribute_warn_unused_result__
+# define __attribute_warn_unused_result__ \
+   __attribute__ ((__warn_unused_result__))
+#else
+# define __attribute_warn_unused_result__ /* empty */
+#endif
+
 #endif /*  _REGEX_INTERNAL_H */