duke@1: /*
darcy@1042:  * Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
duke@1:  * published by the Free Software Foundation.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: /**
duke@1:  * @test
darcy@1042:  * @bug     6330997 7025789
duke@1:  * @summary javac should accept class files with major version of the next release
duke@1:  * @author  Wei Tao
duke@1:  * @clean T1 T2
darcy@1042:  * @compile -target 8 T1.java
darcy@1042:  * @compile -target 8 T2.java
duke@1:  * @run main/othervm T6330997
duke@1:  */
duke@1: 
duke@1: import java.nio.*;
duke@1: import java.io.*;
duke@1: import java.nio.channels.*;
duke@1: import com.sun.tools.javac.api.JavacTaskImpl;
duke@1: import com.sun.tools.javac.jvm.ClassReader.BadClassFile;
duke@1: import com.sun.tools.javac.main.JavaCompiler;
duke@1: import javax.tools.ToolProvider;
duke@1: 
duke@1: public class T6330997 {
duke@1:     public static void main(String... args) {
duke@1:         increaseMajor("T1.class", 1);
duke@1:         increaseMajor("T2.class", 2);
duke@1:         javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
duke@1:         JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
duke@1:         JavaCompiler compiler = JavaCompiler.instance(task.getContext());
duke@1:         try {
duke@1:             compiler.resolveIdent("T1").complete();
duke@1:         } catch (Exception e) {
duke@1:             e.printStackTrace();
duke@1:             throw new RuntimeException("Failed: unexpected exception while reading class T1");
duke@1:         }
duke@1:         try {
duke@1:             compiler.resolveIdent("T2").complete();
duke@1:         } catch (BadClassFile e) {
duke@1:             System.err.println("Passed: expected completion failure " + e.getClass().getName());
duke@1:             return;
duke@1:         } catch (Exception e) {
duke@1:             e.printStackTrace();
duke@1:             throw new RuntimeException("Failed: unexpected exception while reading class T2");
duke@1:         }
duke@1:         throw new RuntimeException("Failed: no error reported");
duke@1:     }
duke@1: 
duke@1:     // Increase class file cfile's major version by delta
duke@1:     static void increaseMajor(String cfile, int delta) {
duke@1:         try {
duke@1:             RandomAccessFile cls = new RandomAccessFile(
duke@1:                     new File(System.getProperty("test.classes", "."), cfile), "rw");
duke@1:             FileChannel fc = cls.getChannel();
duke@1:             ByteBuffer rbuf = ByteBuffer.allocate(2);
duke@1:             fc.read(rbuf, 6);
duke@1:             ByteBuffer wbuf = ByteBuffer.allocate(2);
duke@1:             wbuf.putShort(0, (short)(rbuf.getShort(0) + delta));
duke@1:             fc.write(wbuf, 6);
duke@1:             fc.force(false);
duke@1:             cls.close();
duke@1:          } catch (Exception e){
duke@1:             e.printStackTrace();
duke@1:             throw new RuntimeException("Failed: unexpected exception");
duke@1:          }
duke@1:      }
duke@1: }