1 files changed, 44 insertions, 0 deletions
diff --git a/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.pass.cpp b/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.pass.cpp
new file mode 100644
index 0000000000000..93dc15401e9f3
--- /dev/null
+++ b/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize xsputn(const char_type* s, streamsize n);
+
+#include <streambuf>
+#include <cassert>
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setp(char* pbeg, char* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+};
+
+int main()
+{
+    {
+        test t;
+        char in[] = "123456";
+        assert(t.sputn(in, sizeof(in)) == 0);
+        char out[sizeof(in)] = {0};
+        t.setp(out, out+sizeof(out));
+        assert(t.sputn(in, sizeof(in)) == sizeof(in));
+        assert(strcmp(in, out) == 0);
+    }
+}