1 files changed, 44 insertions, 0 deletions
diff --git a/test/std/diagnostics/syserr/syserr.hash/error_condition.pass.cpp b/test/std/diagnostics/syserr/syserr.hash/error_condition.pass.cpp
new file mode 100644
index 000000000000..d455210c2697
--- /dev/null
+++ b/test/std/diagnostics/syserr/syserr.hash/error_condition.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.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class T>
+// struct hash
+//     : public unary_function<T, size_t>
+// {
+//     size_t operator()(T val) const;
+// };
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void
+test(int i)
+{
+    typedef std::error_condition T;
+    typedef std::hash<T> H;
+    static_assert((std::is_same<H::argument_type, T>::value), "" );
+    static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
+    H h;
+    T ec(i, std::system_category());
+    const std::size_t result = h(ec);
+    LIBCPP_ASSERT(result == static_cast<std::size_t>(i));
+    ((void)result); // Prevent unused warning
+}
+
+int main()
+{
+    test(0);
+    test(2);
+    test(10);
+}