test for unreproducable KT-2288

compiler/testData/codegen/regressions/kt2288.kt

@@ -0,0 +1,8 @@
+public open class Test(): java.util.RandomAccess, Cloneable, java.io.Serializable
+{
+        public override fun clone(): Test = Test() // Override 'clone()' with more precise type 'Test'
+
+        public override fun toString() = "OK"
+}
+
+fun box() = Test().clone().toString()

compiler/tests/org/jetbrains/jet/codegen/ClassGenTest.java

@@ -491,4 +491,11 @@ public class ClassGenTest extends CodegenTestCase {
         createEnvironmentWithMockJdkAndIdeaAnnotations(ConfigurationKind.JDK_ONLY);
         blackBoxMultiFile("regressions/kt2482.kt");
     }
+
+    public void testKt2288() {
+        createEnvironmentWithMockJdkAndIdeaAnnotations(ConfigurationKind.JDK_ONLY);
+        loadFile("regressions/kt2288.kt");
+        //System.out.println(generateToText());
+        blackBox();
+    }
 }