1 files changed, 29 insertions, 0 deletions
diff --git a/test/std/utilities/time/time.clock/time.clock.file/rep_signed.pass.cpp b/test/std/utilities/time/time.clock/time.clock.file/rep_signed.pass.cpp
new file mode 100644
index 0000000000000..c0fa0b5bedaec
--- /dev/null
+++ b/test/std/utilities/time/time.clock/time.clock.file/rep_signed.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
+
+// TODO: Remove this when filesystem gets integrated into the dylib
+// REQUIRES: c++filesystem
+
+// <chrono>
+
+// file_clock
+
+// rep should be signed
+
+#include <chrono>
+#include <cassert>
+
+int main()
+{
+    static_assert(std::is_signed<std::chrono::file_clock::rep>::value, "");
+    assert(std::chrono::file_clock::duration::min() <
+           std::chrono::file_clock::duration::zero());
+}