Merge to upstream r225300.

Change-Id: I2b23715db9ac129ff80aa78ad5824db0a4d6fbb3

test/std/utilities/template.bitset/includes.pass.cpp

@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// test that <bitset> includes <cstddef>, <string>, <stdexcept> and <iosfwd>
+
+#include <bitset>
+
+#ifndef _LIBCPP_CSTDDEF
+#error <cstddef> has not been included
+#endif
+
+#ifndef _LIBCPP_STRING
+#error <string> has not been included
+#endif
+
+#ifndef _LIBCPP_STDEXCEPT
+#error <stdexcept> has not been included
+#endif
+
+#ifndef _LIBCPP_IOSFWD
+#error <iosfwd> has not been included
+#endif
+
+int main()
+{
+}