1 /*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package runtime.valhalla.valuetypes;
24
25 import java.lang.invoke.*;
26
27 import jdk.experimental.value.MethodHandleBuilder;
28
29 import jdk.test.lib.Asserts;
30
31 /*
32 * @test
33 * @summary Flattenable field semantic test
34 * @modules java.base/jdk.experimental.bytecode
35 * java.base/jdk.experimental.value
36 * @library /test/lib
37 * @compile -XDemitQtypes -XDenableValueTypes -XDallowWithFieldOperator Point.java JumboValue.java
38 * @compile -XDemitQtypes -XDenableValueTypes -XDallowWithFieldOperator FlattenableSemanticTest.java
39 * @run main/othervm -Xint -XX:ValueFieldMaxFlatSize=64 -XX:+EnableValhalla runtime.valhalla.valuetypes.FlattenableSemanticTest
40 * @run main/othervm -Xcomp -XX:+EnableValhalla -XX:ValueFieldMaxFlatSize=64 runtime.valhalla.valuetypes.FlattenableSemanticTest
41 * // debug: -XX:+PrintValueLayout -XX:-ShowMessageBoxOnError
42 */
43 public class FlattenableSemanticTest {
44
45 static Point.box nfsp;
46 static Point.val fsp;
47
48 Point.box nfip;
49 Point.val fip;
50
51 static JumboValue.box nfsj;
52 static JumboValue.val fsj;
53
54 JumboValue.box nfij;
55 JumboValue.val fij;
56
57 static Object getNull() {
58 return null;
59 }
60
61 FlattenableSemanticTest() { }
62
63 public static void main(String[] args) {
64 FlattenableSemanticTest test = new FlattenableSemanticTest();
65
66 // Uninitialized value fields must be null for non flattenable fields
67 Asserts.assertNull(nfsp, "Invalid non null value for unitialized non flattenable field");
68 Asserts.assertNull(nfsj, "Invalid non null value for unitialized non flattenable field");
69 Asserts.assertNull(test.nfip, "Invalid non null value for unitialized non flattenable field");
70 Asserts.assertNull(test.nfij, "Invalid non null value for unitialized non flattenable field");
71
72 // fsp.equals(null);
73
74 // Uninitialized value fields must be non null for flattenable fields
75 Asserts.assertNotNull(fsp, "Invalid null value for unitialized flattenable field");
76 Asserts.assertNotNull(fsj, "Invalid null value for unitialized flattenable field");
77 Asserts.assertNotNull(test.fip, "Invalid null value for unitialized flattenable field");
78 Asserts.assertNotNull(test.fij, "Invalid null value for unitialized flattenable field");
79
80 // Assigning null must be allowed for non flattenable value fields
81 boolean exception = true;
82 try {
83 nfsp = (Point.box)getNull();
84 nfsp = null;
85 exception = false;
86 } catch (NullPointerException e) {
87 exception = true;
88 }
89 Asserts.assertFalse(exception, "Invalid NPE when assigning null to a non flattenable field");
90
91 try {
92 nfsj = (JumboValue.box)getNull();
93 nfsj = null;
94 exception = false;
95 } catch (NullPointerException e) {
96 exception = true;
97 }
98 Asserts.assertFalse(exception, "Invalid NPE when assigning null to a non flattenable field");
99
100 try {
101 test.nfip = (Point.box)getNull();
102 test.nfip = null;
103 exception = false;
104 } catch (NullPointerException e) {
105 exception = true;
106 }
107 Asserts.assertFalse(exception, "Invalid NPE when assigning null to a non flattenable field");
108
109 try {
110 test.nfij = (JumboValue.box)getNull();
111 test.nfij = null;
112 exception = false;
113 } catch (NullPointerException e) {
114 exception = true;
115 }
116 Asserts.assertFalse(exception, "Invalid NPE when assigning null to a non flattenable field");
117
118 // Assigning null to a flattenable value field must trigger a NPE
119 exception = false;
120 try {
121 fsp = (Point)getNull();
122 } catch(NullPointerException e) {
123 exception = true;
124 }
125 Asserts.assertTrue(exception, "NPE not thrown when assigning null to a flattenable field");
126 exception = false;
127 try {
128 fsj = (JumboValue)getNull();
129 } catch(NullPointerException e) {
130 exception = true;
131 }
132 Asserts.assertTrue(exception, "NPE not thrown when assigning null to a flattenable field");
133 exception = false;
134 try {
135 test.fip = (Point)getNull();
136 } catch(NullPointerException e) {
137 exception = true;
138 }
139 Asserts.assertTrue(exception, "NPE not thrown when assigning null to a flattenable field");
140 exception = false;
141 try {
142 test.fij = (JumboValue)getNull();
143 } catch(NullPointerException e) {
144 exception = true;
145 }
146 Asserts.assertTrue(exception, "NPE not thrown when assigning null to a flattenable field");
147 exception = false;
148 }
149
150 }