--- /dev/null	2019-03-11 09:22:42.048915961 +0100
+++ new/test/hotspot/jtreg/runtime/valhalla/valuetypes/UninitializedValueFieldsTest.java	2019-03-11 14:27:51.134353704 +0100
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package runtime.valhalla.valuetypes;
+
+import jdk.test.lib.Asserts;
+
+/*
+ * @test
+ * @summary Uninitialized value fields test
+ * @library /test/lib
+ * @compile -XDemitQtypes -XDenableValueTypes -XDallowWithFieldOperator -XDallowFlattenabilityModifiers Point.java JumboValue.java UninitializedValueFieldsTest.java
+ * @run main/othervm -Xint -XX:ValueFieldMaxFlatSize=64 -XX:+EnableValhalla runtime.valhalla.valuetypes.UninitializedValueFieldsTest
+ * @run main/othervm -Xcomp -XX:+EnableValhalla -XX:ValueFieldMaxFlatSize=64 runtime.valhalla.valuetypes.UninitializedValueFieldsTest
+ */
+public class UninitializedValueFieldsTest {
+    static Point.box nonFlattenableStaticPoint;
+    static Point.val staticPoint;
+
+    Point instancePoint;
+
+    static JumboValue.box sj1;
+    static JumboValue.val sj2;
+
+    JumboValue.box j1;
+    JumboValue.val j2;
+
+    static Object getNull() {
+        return null;
+    }
+
+    UninitializedValueFieldsTest() { }
+
+    public static void main(String[] args) {
+        checkUninitializedPoint(UninitializedValueFieldsTest.staticPoint, 0, 0);
+        Asserts.assertEquals(nonFlattenableStaticPoint, null, "invalid non flattenable static value field");
+        UninitializedValueFieldsTest.staticPoint = Point.createPoint(456, 678);
+        checkUninitializedPoint(UninitializedValueFieldsTest.staticPoint, 456, 678);
+        UninitializedValueFieldsTest test = new UninitializedValueFieldsTest();
+        checkUninitializedPoint(test.instancePoint, 0, 0);
+        test.instancePoint = Point.createPoint(123, 345);
+        checkUninitializedPoint(test.instancePoint, 123, 345);
+
+        Asserts.assertEquals(test.j1, null, "invalid non flattenable instance value field");
+        Asserts.assertEquals(test.j2.l0, 0L, "invalid flattenable instance value field");
+    }
+
+    static void checkUninitializedPoint(Point p, int x, int y) {
+        Asserts.assertEquals(p.x, x, "invalid x value");
+        Asserts.assertEquals(p.y, y, "invalid y value");
+    }
+}