[libstdc++, testsuite] Add dg-require-thread-fence

2016-11-30  Christophe Lyon  <christophe.lyon@linaro.org>

	* testsuite/experimental/type_erased_allocator/2.cc: Add
	dg-require-thread-fence.

From-SVN: r243001

libstdc++-v3/ChangeLog

+2016-11-30  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* testsuite/experimental/type_erased_allocator/2.cc: Add
+	dg-require-thread-fence.
+
 2016-11-29  David Edelsohn  <dje.gcc@gmail.com>
 
 	PR libstdc++/68838

libstdc++-v3/testsuite/experimental/type_erased_allocator/2.cc

 // { dg-do run { target c++14 } }
+// { dg-require-thread-fence "" }
 
 // Copyright (C) 2015-2016 Free Software Foundation, Inc.
 //