1 /*
 2  * Copyright (c) 2023, 2024, 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 8308762
27  * @library /test/lib
28  * @summary Test that redefinition of class containing Throwable refs does not leak constant pool
29  * @requires os.family == "aix"
30  * @requires vm.jvmti
31  * @requires vm.flagless
32  * @modules java.base/jdk.internal.misc
33  * @modules java.instrument
34  *          java.compiler
35  * @run main RedefineClassHelper
36  * @run main/othervm/timeout=6000 -javaagent:redefineagent.jar -XX:MetaspaceSize=25m -XX:MaxMetaspaceSize=25m RedefineLeakThrowable
37  */
38 
39 /*
40  * @test
41  * @bug 8308762
42  * @library /test/lib
43  * @summary Test that redefinition of class containing Throwable refs does not leak constant pool
44  * @requires os.family != "aix"
45  * @requires vm.jvmti
46  * @requires vm.flagless
47  * @modules java.base/jdk.internal.misc
48  * @modules java.instrument
49  *          java.compiler
50  * @run main RedefineClassHelper
51  * @run main/othervm/timeout=6000 -javaagent:redefineagent.jar -XX:MetaspaceSize=17m -XX:MaxMetaspaceSize=17m RedefineLeakThrowable
52  */
53 
54 class Tester {
55     void test() {
56         try {
57             int i = 42;
58         } catch (Throwable t) {
59             t.printStackTrace();
60         }
61     }
62 }
63 
64 public class RedefineLeakThrowable {
65 
66     static final String NEW_TESTER =
67         "class Tester {" +
68         "   void test() {" +
69         "        try {" +
70         "            int i = 42;" +
71         "        } catch (Throwable t) {" +
72         "            t.printStackTrace();" +
73         "        }" +
74         "    }" +
75         "}";
76 
77 
78     public static void main(String argv[]) throws Exception {
79         for (int i = 0; i < 700; i++) {
80             RedefineClassHelper.redefineClass(Tester.class, NEW_TESTER);
81         }
82     }
83 }