--- /dev/null
+++ xnu/xnu-8019.41.5/tests/safe_allocation_src/data.cpp
@@ -0,0 +1,40 @@
+//
+// Tests for
+//      T* data();
+//      T const* data() const;
+//
+
+#include <libkern/c++/safe_allocation.h>
+#include <darwintest.h>
+#include "test_utils.h"
+
+struct T {
+	int i;
+};
+
+template <typename T>
+static void
+tests()
+{
+	{
+		test_safe_allocation<T> array(10, libkern::allocate_memory);
+		CHECK(array.data() != nullptr);
+	}
+	{
+		T* memory = reinterpret_cast<T*>(malloc_allocator::allocate(10 * sizeof(T)));
+		test_safe_allocation<T> array(memory, 10, libkern::adopt_memory);
+		T* data = array.data();
+		CHECK(data == memory);
+	}
+	{
+		T* memory = reinterpret_cast<T*>(malloc_allocator::allocate(10 * sizeof(T)));
+		test_safe_allocation<T> const array(memory, 10, libkern::adopt_memory);
+		T const* data = array.data();
+		CHECK(data == memory);
+	}
+}
+
+T_DECL(data, "safe_allocation.data") {
+	tests<T>();
+	tests<T const>();
+}