1 files changed, 54 insertions, 0 deletions

diff --git a/libcxx/test/input.output/iostream.format/std.manip/setiosflags.pass.cpp b/libcxx/test/input.output/iostream.format/std.manip/setiosflags.pass.cpp
new file mode 100644
index 00000000000..027e187ec53
--- /dev/null
+++ b/libcxx/test/input.output/iostream.format/std.manip/setiosflags.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// T2 setiosflags (ios_base::fmtflags mask);
+
+#include <iomanip>
+#include <cassert>
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main()
+{
+    {
+        testbuf<char> sb;
+        std::istream is(&sb);
+        assert(!(is.flags() & std::ios_base::oct));
+        is >> std::setiosflags(std::ios_base::oct);
+        assert(is.flags() & std::ios_base::oct);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(!(os.flags() & std::ios_base::oct));
+        os << std::setiosflags(std::ios_base::oct);
+        assert(os.flags() & std::ios_base::oct);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        assert(!(is.flags() & std::ios_base::oct));
+        is >> std::setiosflags(std::ios_base::oct);
+        assert(is.flags() & std::ios_base::oct);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        assert(!(os.flags() & std::ios_base::oct));
+        os << std::setiosflags(std::ios_base::oct);
+        assert(os.flags() & std::ios_base::oct);
+    }
+}