--- /dev/null
+++ xnu/xnu-12377.121.6/tests/bounded_ptr_src/operator_bool.cpp
@@ -0,0 +1,42 @@
+//
+// Tests for
+//  explicit operator bool() const;
+//
+
+#include <libkern/c++/bounded_ptr.h>
+#include <darwintest.h>
+#include <darwintest_utils.h>
+#include "test_utils.h"
+
+#define _assert(...) T_ASSERT_TRUE((__VA_ARGS__), # __VA_ARGS__)
+
+struct T { };
+
+template <typename T>
+static void
+tests()
+{
+	{
+		test_bounded_ptr<T> p = nullptr;
+		if (p) {
+			_assert(false);
+		}
+		_assert(!p);
+	}
+	{
+		T t;
+		test_bounded_ptr<T> p(&t, &t, &t + 1);
+		if (p) {
+		} else {
+			_assert(false);
+		}
+		_assert(!!p);
+	}
+}
+
+T_DECL(operator_bool, "bounded_ptr.operator.bool", T_META_TAG_VM_PREFERRED) {
+	tests<T>();
+	tests<T const>();
+	tests<T volatile>();
+	tests<T const volatile>();
+}