1 /* 2 * Copyright (c) 2006, 2011, 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 * @bug 6330997 7025789 27 * @summary javac should accept class files with major version of the next release 28 * @author Wei Tao 29 * @clean T1 T2 30 * @compile -target 8 T1.java 31 * @compile -target 8 T2.java 32 * @run main/othervm T6330997 33 */ 34 35 import java.nio.*; 36 import java.io.*; 37 import java.nio.channels.*; 38 import com.sun.tools.javac.api.JavacTaskImpl; 39 import com.sun.tools.javac.jvm.ClassReader.BadClassFile; 40 import com.sun.tools.javac.main.JavaCompiler; 41 import javax.tools.ToolProvider; 42 43 public class T6330997 { 44 public static void main(String... args) { 45 increaseMajor("T1.class", 1); 46 increaseMajor("T2.class", 2); 47 javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); 48 JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null); 49 JavaCompiler compiler = JavaCompiler.instance(task.getContext()); 50 try { 51 compiler.resolveIdent("T1").complete(); 52 } catch (Exception e) { 53 e.printStackTrace(); 54 throw new RuntimeException("Failed: unexpected exception while reading class T1"); 55 } 56 try { 57 compiler.resolveIdent("T2").complete(); 58 } catch (BadClassFile e) { 59 System.err.println("Passed: expected completion failure " + e.getClass().getName()); 60 return; 61 } catch (Exception e) { 62 e.printStackTrace(); 63 throw new RuntimeException("Failed: unexpected exception while reading class T2"); 64 } 65 throw new RuntimeException("Failed: no error reported"); 66 } 67 68 // Increase class file cfile's major version by delta 69 static void increaseMajor(String cfile, int delta) { 70 try { 71 RandomAccessFile cls = new RandomAccessFile( 72 new File(System.getProperty("test.classes", "."), cfile), "rw"); 73 FileChannel fc = cls.getChannel(); 74 ByteBuffer rbuf = ByteBuffer.allocate(2); 75 fc.read(rbuf, 6); 76 ByteBuffer wbuf = ByteBuffer.allocate(2); 77 wbuf.putShort(0, (short)(rbuf.getShort(0) + delta)); 78 fc.write(wbuf, 6); 79 fc.force(false); 80 cls.close(); 81 } catch (Exception e){ 82 e.printStackTrace(); 83 throw new RuntimeException("Failed: unexpected exception"); 84 } 85 } 86 }