1 /*
2 * Copyright (c) 2017, 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
24 /*
25 * @test
26 * @bug 8186046
27 * @summary Test bootstrap methods returning the wrong type
28 * @library /lib/testlibrary/bytecode /java/lang/invoke/common
29 * @build jdk.experimental.bytecode.BasicClassBuilder test.java.lang.invoke.lib.InstructionHelper
30 * @run testng CondyWrongType
31 * @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 CondyWrongType
32 */
33
34 import org.testng.Assert;
35 import org.testng.annotations.DataProvider;
36 import org.testng.annotations.Test;
37 import test.java.lang.invoke.lib.InstructionHelper;
38
39 import java.lang.invoke.MethodHandle;
40 import java.lang.invoke.MethodHandles;
41 import java.lang.invoke.MethodType;
42 import java.lang.invoke.WrongMethodTypeException;
43 import java.math.BigDecimal;
44 import java.util.ArrayList;
45 import java.util.List;
46 import java.util.Map;
47
48 import static java.lang.invoke.MethodType.methodType;
49
50 public class CondyWrongType {
51
52 @DataProvider
53 public Object[][] primitivesProvider() throws Exception {
54 Map<String, Class<?>> typeMap = Map.of(
55 "B", byte.class,
56 "C", char.class,
57 "D", double.class,
58 "F", float.class,
59 "I", int.class,
60 "J", long.class,
61 "S", short.class,
62 "Z", boolean.class
63 );
64
65 List<Object[]> cases = new ArrayList<>();
66 for (String name : typeMap.keySet()) {
67 MethodHandle zero = MethodHandles.zero(typeMap.get(name));
68 for (String type : typeMap.keySet()) {
69 // Use asType transformation to detect if primitive conversion
70 // is supported from the BSM value type to the dynamic constant type
71 boolean pass = true;
72 try {
73 zero.asType(MethodType.methodType(typeMap.get(type)));
74 }
75 catch (WrongMethodTypeException e) {
76 pass = false;
77 }
78 cases.add(new Object[] { name, type, pass});
79 }
80 }
81
82 return cases.stream().toArray(Object[][]::new);
83 }
84
85 @Test(dataProvider = "primitivesProvider")
86 public void testPrimitives(String name, String type, boolean pass) {
87 test(name, type, pass);
88 }
89
90 @Test
91 public void testReferences() {
92 test("String", "Ljava/math/BigDecimal;", false);
93 test("BigDecimal", "Ljava/lang/String;", false);
94 }
95
96 @Test
97 public void testReferenceAndPrimitives() {
98 test("String", "B", false);
99 test("String", "C", false);
100 test("String", "D", false);
101 test("String", "F", false);
102 test("String", "I", false);
103 test("String", "J", false);
104 test("String", "S", false);
105 test("String", "Z", false);
106 }
107
108 static void test(String name, String type, boolean pass) {
109 MethodHandle mh = caster(name, type);
110 Throwable caught = null;
111 try {
112 mh.invoke();
113 }
114 catch (Throwable t) {
115 caught = t;
116 }
117
118 if (caught == null) {
119 if (pass) {
120 return;
121 }
122 else {
123 Assert.fail("Throwable expected");
124 }
125 }
126 else if (pass) {
127 Assert.fail("Throwable not expected");
128 }
129
130 Assert.assertTrue(BootstrapMethodError.class.isAssignableFrom(caught.getClass()));
131 caught = caught.getCause();
132 Assert.assertNotNull(caught);
133 Assert.assertTrue(ClassCastException.class.isAssignableFrom(caught.getClass()));
134 }
135
136 static Object bsm(MethodHandles.Lookup l, String name, Class<?> type) {
137 switch (name) {
138 case "B":
139 return (byte) 1;
140 case "C":
141 return 'A';
142 case "D":
143 return 1.0;
144 case "F":
145 return 1.0f;
146 case "I":
147 return 1;
148 case "J":
149 return 1L;
150 case "S":
151 return (short) 1;
152 case "Z":
153 return true;
154 case "String":
155 return "string";
156 case "BigDecimal":
157 return BigDecimal.ONE;
158 default:
159 throw new UnsupportedOperationException();
160 }
161 }
162
163 static MethodHandle caster(String name, String type) {
164 try {
165 return InstructionHelper.ldcDynamicConstant(
166 MethodHandles.lookup(),
167 name, type,
168 "bsm", methodType(Object.class, MethodHandles.Lookup.class, String.class, Class.class).toMethodDescriptorString(),
169 S -> { });
170 } catch (Exception e) {
171 throw new Error(e);
172 }
173 }
174 }