Forgot to svn add the test for r189722.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@189723 91177308-0d34-0410-b5e6-96231b3b80d8

test/utilities/time/time.duration/time.duration.cons/convert_overflow.pass.cpp

@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+// overflow should SFINAE instead of error out, LWG 2094
+
+#include <chrono>
+#include <cassert>
+
+bool called = false;
+
+void f(std::chrono::milliseconds);
+void f(std::chrono::seconds)
+{
+    called = true;
+}
+
+int main()
+{
+    {
+    std::chrono::duration<int, std::exa> r(1);
+    f(r);
+    assert(called);
+    }
+}