Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/input.output/iostreams.base/ios.base/fmtflags.state/unsetf_mask.pass.cpp

@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// void unsetf(fmtflags mask);
+
+#include <ios>
+#include <cassert>
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main()
+{
+    test t;
+    assert(t.flags() == (test::skipws | test::dec));
+    t.unsetf(test::dec | test::right);
+    assert(t.flags() == test::skipws);
+}