--- /dev/null
+++ xnu/xnu-8019.61.5/tests/bounded_array_src/data.cpp
@@ -0,0 +1,58 @@
+//
+// Tests for
+//  T* data();
+//  T const* data() const;
+//
+
+#include <libkern/c++/bounded_array.h>
+#include "test_policy.h"
+#include <darwintest.h>
+#include <type_traits>
+
+struct T { int i; };
+inline bool
+operator==(T const& a, T const& b)
+{
+	return a.i == b.i;
+}
+
+template <typename T>
+static void
+tests()
+{
+	{
+		test_bounded_array<T, 5> array = {T{0}, T{1}, T{2}, T{3}, T{4}};
+		T* data = array.data();
+		CHECK(data != nullptr);
+		CHECK(data[0] == T{0});
+		CHECK(data[1] == T{1});
+		CHECK(data[2] == T{2});
+		CHECK(data[3] == T{3});
+		CHECK(data[4] == T{4});
+	}
+	{
+		test_bounded_array<T, 5> const array = {T{0}, T{1}, T{2}, T{3}, T{4}};
+		T const* data = array.data();
+		CHECK(data != nullptr);
+		CHECK(data[0] == T{0});
+		CHECK(data[1] == T{1});
+		CHECK(data[2] == T{2});
+		CHECK(data[3] == T{3});
+		CHECK(data[4] == T{4});
+	}
+
+	{
+		test_bounded_array<T, 0> array = {};
+		T* data = array.data();
+		CHECK(data != nullptr);
+	}
+	{
+		test_bounded_array<T, 0> const array = {};
+		T const* data = array.data();
+		CHECK(data != nullptr);
+	}
+}
+
+T_DECL(data, "bounded_array.data") {
+	tests<T>();
+}