| /* |
| * Copyright (c) 2014, 2016, 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. |
| */ |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import jdk.internal.org.objectweb.asm.ClassWriter; |
| import jdk.internal.org.objectweb.asm.MethodVisitor; |
| import static jdk.internal.org.objectweb.asm.Opcodes.*; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| /* |
| * @test OverriderMsg |
| * @bug 8026894 |
| * @library /test/lib |
| * @modules java.base/jdk.internal.org.objectweb.asm |
| * java.base/jdk.internal.misc |
| * java.management |
| * @compile -XDignore.symbol.file OverriderMsg.java |
| * @run main/othervm OverriderMsg |
| */ |
| |
| // This test checks that the super class name is included in the message when |
| // a method is detected overriding a final method in its super class. The |
| // asm part of the test creates these two classes: |
| // |
| // public class HasFinal { |
| // public final void m(String s) { } |
| // } |
| // |
| // public class Overrider extends HasFinal { |
| // public void m(String s) { } |
| // public static void main(String[] args) { } |
| // } |
| // |
| public class OverriderMsg { |
| |
| public static void dump_HasFinal () throws Exception { |
| |
| ClassWriter cw = new ClassWriter(0); |
| MethodVisitor mv; |
| |
| cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, "HasFinal", null, "java/lang/Object", null); |
| |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "m", "(Ljava/lang/String;)V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 2); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| try (FileOutputStream fos = new FileOutputStream(new File("HasFinal.class"))) { |
| fos.write(cw.toByteArray()); |
| } |
| } |
| |
| |
| public static void dump_Overrider () throws Exception { |
| |
| ClassWriter cw = new ClassWriter(0); |
| MethodVisitor mv; |
| cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, "Overrider", null, "HasFinal", null); |
| |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "HasFinal", "<init>", "()V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "m", "(Ljava/lang/String;)V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 2); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 1); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| |
| try (FileOutputStream fos = new FileOutputStream(new File("Overrider.class"))) { |
| fos.write(cw.toByteArray()); |
| } |
| } |
| |
| |
| public static void main(String... args) throws Exception { |
| dump_HasFinal(); |
| dump_Overrider(); |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-cp", ".", "Overrider"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain( |
| "java.lang.VerifyError: class Overrider overrides final method HasFinal.m(Ljava/lang/String;)V"); |
| output.shouldHaveExitValue(1); |
| } |
| |
| } |