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 vm.jvmti 30 * @requires vm.flagless 31 * @modules java.base/jdk.internal.misc 32 * @modules java.instrument 33 * java.compiler 34 * @run main RedefineClassHelper 35 * @run main/othervm/timeout=6000 -javaagent:redefineagent.jar -XX:MetaspaceSize=23m -XX:MaxMetaspaceSize=23m RedefineLeakThrowable 36 */ 37 38 39 // MaxMetaspaceSize=23m allows InMemoryJavaCompiler to load even if CDS is off. 40 41 class Tester { 42 void test() { 43 try { 44 int i = 42; 45 } catch (Throwable t) { 46 t.printStackTrace(); 47 } 48 } 49 } 50 51 public class RedefineLeakThrowable { 52 53 static final String NEW_TESTER = 54 "class Tester {" + 55 " void test() {" + 56 " try {" + 57 " int i = 42;" + 58 " } catch (Throwable t) {" + 59 " t.printStackTrace();" + 60 " }" + 61 " }" + 62 "}"; 63 64 65 public static void main(String argv[]) throws Exception { 66 for (int i = 0; i < 700; i++) { 67 RedefineClassHelper.redefineClass(Tester.class, NEW_TESTER); 68 } 69 } 70 }