gets-chk.c: Declare prototype for gets in C11 mode.

2015-01-22  Matthias Klose  <doko@ubuntu.com>

        * gets-chk.c: Declare prototype for gets in C11 mode.

From-SVN: r220018

libssp/ChangeLog

+2015-01-22  Matthias Klose  <doko@ubuntu.com>
+
+	* gets-chk.c: Declare prototype for gets in C11 mode.
+
 2014-11-21  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR bootstrap/63784

libssp/gets-chk.c

@@ -51,6 +51,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 # include <string.h>
 #endif
 
+#if !(!defined __USE_ISOC11				\
+      || (defined __cplusplus && __cplusplus <= 201103L))
+extern char *gets (char *);
+#endif
+
 extern void __chk_fail (void) __attribute__((__noreturn__));
 
 char *