1 /*
   2  * Copyright (c) 2014, 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  * @library /testlibrary
  27  * @compile -XDignore.symbol.file UnsupportedClassFileVersion.java
  28  * @run main UnsupportedClassFileVersion
  29  */
  30  
  31 import java.io.File;
  32 import java.io.FileOutputStream;
  33 import jdk.internal.org.objectweb.asm.ClassWriter;
  34 import jdk.internal.org.objectweb.asm.MethodVisitor;
  35 import jdk.internal.org.objectweb.asm.Opcodes;
  36 import com.oracle.java.testlibrary.*;
  37 
  38 public class UnsupportedClassFileVersion implements Opcodes {
  39     public static void main(String... args) throws Exception {
  40         writeClassFile();
  41         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-cp", ".",  "ClassFile");
  42         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  43         output.shouldContain("ClassFile has been compiled by a more recent Java version (class file version 99.0), " +
  44                             "this Java version only recognizes class file versions up to " +
  45                             System.getProperty("java.class.version"));
  46 
  47         output.shouldHaveExitValue(1);
  48     }
  49 
  50     public static void writeClassFile() throws Exception {
  51         ClassWriter cw = new ClassWriter(0);
  52         MethodVisitor mv;
  53 
  54         cw.visit(99, ACC_PUBLIC + ACC_SUPER, "ClassFile", null, "java/lang/Object", null);
  55         mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
  56         mv.visitCode();
  57         mv.visitVarInsn(ALOAD, 0);
  58         mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
  59         mv.visitInsn(RETURN);
  60         mv.visitMaxs(1, 1);
  61         mv.visitEnd();
  62         cw.visitEnd();
  63 
  64         try (FileOutputStream fos = new FileOutputStream(new File("ClassFile.class"))) {
  65              fos.write(cw.toByteArray());
  66         }
  67     }
  68 }