/* * Copyright (c) 2024, 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. * */ /* class ResolvedPutFieldHelper { int x; // change it to 'final' ResolvedPutFieldHelper() { x = 1; } void set_x() { x = 2; } public static void main(String args[]) { ResolvedPutFieldHelper s = new ResolvedPutFieldHelper(); s.set_x(); System.out.println(s.x); } } */ super class ResolvedPutFieldHelper version 66:0 { //WAS Field x:I; final Field x:I; Method "":"()V" stack 2 locals 1 { aload_0; invokespecial Method java/lang/Object."":"()V"; aload_0; iconst_1; putfield Field x:"I"; return; } // set_x is not allowed to write to the final "x" field. If CDS pre-resolves its // ResolvedFieldEntry for the putfield bytecode, then we cannot get // the IllegalAccessError at runtime. See JDK-8157181 for the code that // throws the IllegalAccessError. Method set_x:"()V" stack 2 locals 1 { aload_0; iconst_2; putfield Field x:"I"; return; } public static Method main:"([Ljava/lang/String;)V" stack 2 locals 2 { new class ResolvedPutFieldHelper; dup; invokespecial Method "":"()V"; astore_1; aload_1; invokevirtual Method set_x:"()V"; getstatic Field java/lang/System.out:"Ljava/io/PrintStream;"; aload_1; getfield Field x:"I"; invokevirtual Method java/io/PrintStream.println:"(I)V"; return; } }