Disable test in C++<11 mode due to use of alignas.

llvm-svn: 324033

libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp

@@ -7,6 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03
+
 // <memory>
 
 // template <class T>