/* * 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 NestedAnnotations * @summary The JVM handles nested annotations * @bug 8364655 * @requires vm.flagless * @library /test/lib * @library /testlibrary/asm * @modules java.base/jdk.internal.misc * java.desktop * java.management * @run driver NestedAnnotations */ import jdk.test.lib.process.OutputAnalyzer; import jdk.test.lib.process.ProcessTools; import org.objectweb.asm.AnnotationVisitor; import org.objectweb.asm.ClassWriter; import java.lang.invoke.MethodHandles; import java.util.ArrayList; import static org.objectweb.asm.Opcodes.*; public class NestedAnnotations { static void test() throws Exception { var cw = new ClassWriter(0); cw.visit(V17, 0, "Annotations", null, "java/lang/Object", null); final int number_of_annotations = 65535; var av = cw.visitAnnotation("LTest;", true); var stack = new ArrayList(number_of_annotations + 1); stack.add(av); for (int i = 0; i < number_of_annotations; i++) { stack.add(av = av.visitAnnotation("value", "LTest;")); } for (int i = number_of_annotations; i != 0;) { stack.get(--i).visitEnd(); } cw.visitEnd(); // Does not matter whether the class is hidden, used for simplicity's sake. MethodHandles.lookup().defineHiddenClass(cw.toByteArray(), true); } public static void main(String[] args) throws Exception { if (args.length == 1 && args[0].equals("testIt")) { test(); } else { OutputAnalyzer oa = ProcessTools.executeTestJava("NestedAnnotations", "testIt"); oa.shouldHaveExitValue(0); } } }