diff --git a/testApp/misc/testBitSet.cpp b/testApp/misc/testBitSet.cpp
index 3867062..005e1ba 100644
--- a/testApp/misc/testBitSet.cpp
+++ b/testApp/misc/testBitSet.cpp
@@ -146,6 +146,15 @@ static void testOperators()
     b1.or_and(b2, b3);
     str = toString(b1);
     testOk1(str == "{2, 128}");
+
+    b1.clear(); b1.set(1);
+    b2.clear();
+    b3.clear(); b3.set(1);
+    std::cout<<"# "<<toString(b3)<<" |= "<<toString(b1)<<" & "<<toString(b2)<<"\n";
+    b3.or_and(b1, b2);
+    testTodoBegin("Bug in or_and");
+    testOk(toString(b3) == "{1}", "%s == {1}", toString(b3).c_str());
+    testTodoEnd();
 }