pr71675.c: Replace the unsupported c11 target selector with dg-options.

gcc/testsuite/ChangeLog:
	* gcc.dg/atomic/pr71675.c: Replace the unsupported c11 target
	selector with dg-options.

From-SVN: r238766

gcc/testsuite/ChangeLog

+2016-07-26  Martin Sebor  <msebor@redhat.com>
+
+	* gcc.dg/atomic/pr71675.c: Replace the unsupported c11 target
+	selector with dg-options.
+
 2016-07-26  Patrick Palka  <ppalka@gcc.gnu.org>
 
 	PR tree-optimization/18046

gcc/testsuite/gcc.dg/atomic/pr71675.c

-/* PR c++/71675 - __atomic_compare_exchange_n returns wrong type for typed enum
- */
-/* { dg-do compile { target c11 } } */
+/* PR c++/71675 - __atomic_compare_exchange_n returns wrong type for typed
+   enum  */
+/* { dg-do compile } */
+/* { dg-options "-std=c11" } */
+
 
 #define Test(T)								\
   do {									\