/* * Copyright (c) 2026, 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. * */ /* * @test * @summary AOT training run should fail if critical classes have been transformed by JVMTI * with ClassFileLoadHook * @bug 8380409 * @requires vm.cds.supports.aot.class.linking * @library /test/lib * @build TransformCriticalClasses * @run driver jdk.test.lib.helpers.ClassFileInstaller -jar app.jar TransformCriticalClassesApp * @run main/othervm/native TransformCriticalClasses */ import java.util.ArrayList; import jdk.test.lib.cds.CDSTestUtils; import jdk.test.lib.helpers.ClassFileInstaller; import jdk.test.lib.process.ProcessTools; public class TransformCriticalClasses { public static void main(String... args) throws Exception { ArrayList processArgs = new ArrayList<>(); // Tell the native agent SimpleClassFileLoadHook to do an dummy transformation // of java/lang/Class. This class will be defined using the exact same bytecodes // as from the JDK, but the JVM will mark it as having been transformed by JVMTI // and will exclude it from the AOT configuration file. processArgs.add("-agentlib:SimpleClassFileLoadHook=-early,java/lang/Class,xxxxxx,xxxxxx"); processArgs.add("-XX:AOTMode=record"); processArgs.add("-XX:AOTConfiguration=app.aotconfig"); processArgs.add("-Xlog:aot,cds"); processArgs.add("-cp"); processArgs.add("app.jar"); processArgs.add("TransformCriticalClassesApp"); ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(processArgs); CDSTestUtils.executeAndLog(pb, "train") .shouldContain("Skipping java/lang/Class: From ClassFileLoadHook") .shouldContain("Critical class java.lang.Class has been excluded. AOT configuration file cannot be written") .shouldHaveExitValue(1); } } class TransformCriticalClassesApp { public static void main(String[] args) { System.out.println("HelloWorld"); } }