diff --git a/libio/stdio.h b/libio/stdio.h
index 754301f..db05fd6 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -394,6 +394,14 @@ __END_NAMESPACE_C99
 #endif
 
 #ifdef __USE_GNU
+# include <xlocale.h>
+/* Locale convenience functions */
+extern int snprintf_l (char *__restrict __s, locale_t loc, size_t __maxlen,
+                       const char *__restrict __format, ...)
+     __THROWNL __attribute__ ((__format__ (__printf__, 4, 5)));
+#endif
+
+#ifdef __USE_GNU
 /* Write formatted output to a string dynamically allocated with `malloc'.
    Store the address of the string in *PTR.  */
 extern int vasprintf (char **__restrict __ptr, const char *__restrict __f,
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 658804b..1113692 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -37,7 +37,8 @@ routines	:=							      \
 	flockfile ftrylockfile funlockfile				      \
 	isoc99_scanf isoc99_vscanf isoc99_fscanf isoc99_vfscanf isoc99_sscanf \
 	isoc99_vsscanf							      \
-	psiginfo
+	psiginfo							      \
+	snprintf_l
 
 include ../Makeconfig
 
diff --git a/stdio-common/snprintf_l.c b/stdio-common/snprintf_l.c
new file mode 100644
index 0000000..ab40193
--- /dev/null
+++ b/stdio-common/snprintf_l.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 1991-2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <libioP.h>
+#include <xlocale.h>
+#define __vsnprintf(s, l, f, a) _IO_vsnprintf (s, l, f, a)
+
+/* Write formatted output into S, according to the format
+   string FORMAT, writing no more than MAXLEN characters.  */
+/* VARARGS3 */
+int
+__snprintf_l (char *s, locale_t loc, size_t maxlen, const char *format, ...)
+{
+  va_list arg;
+  int done;
+  locale_t old_loc = uselocale (loc);
+
+  va_start (arg, format);
+  done = __vsnprintf (s, maxlen, format, arg);
+  va_end (arg);
+
+  uselocale (old_loc);
+  return done;
+}
+ldbl_weak_alias (__snprintf_l, snprintf_l)