T6330997.java revision 3294:9adfb22ff08f
1/* 2 * Copyright (c) 2006, 2015, 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 8000961 27 * @summary javac should accept class files with major version of the next release 28 * @author Wei Tao 29 * @modules jdk.compiler/com.sun.tools.javac.api 30 * jdk.compiler/com.sun.tools.javac.code 31 * jdk.compiler/com.sun.tools.javac.comp 32 * jdk.compiler/com.sun.tools.javac.main 33 * jdk.compiler/com.sun.tools.javac.util 34 * @clean T1 T2 35 * @compile -source 8 -target 8 T1.java 36 * @compile -source 8 -target 8 T2.java 37 * @run main/othervm T6330997 38 */ 39 40import java.nio.*; 41import java.io.*; 42import java.nio.channels.*; 43 44import com.sun.tools.javac.api.JavacTaskImpl; 45import com.sun.tools.javac.code.ClassFinder.BadClassFile; 46import com.sun.tools.javac.code.Symtab; 47import com.sun.tools.javac.comp.Modules; 48import com.sun.tools.javac.main.JavaCompiler; 49import com.sun.tools.javac.util.List; 50import javax.tools.ToolProvider; 51 52public class T6330997 { 53 public static void main(String... args) { 54 increaseMajor("T1.class", 1); 55 increaseMajor("T2.class", 2); 56 javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); 57 JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null); 58 JavaCompiler compiler = JavaCompiler.instance(task.getContext()); 59 Symtab syms = Symtab.instance(task.getContext()); 60 Modules modules = Modules.instance(task.getContext()); 61 modules.enter(List.nil(), null); 62 try { 63 compiler.resolveIdent(syms.unnamedModule, "T1").complete(); 64 } catch (Exception e) { 65 e.printStackTrace(); 66 throw new RuntimeException("Failed: unexpected exception while reading class T1"); 67 } 68 try { 69 compiler.resolveIdent(syms.unnamedModule, "T2").complete(); 70 } catch (BadClassFile e) { 71 System.err.println("Passed: expected completion failure " + e.getClass().getName()); 72 return; 73 } catch (Exception e) { 74 e.printStackTrace(); 75 throw new RuntimeException("Failed: unexpected exception while reading class T2"); 76 } 77 throw new RuntimeException("Failed: no error reported"); 78 } 79 80 // Increase class file cfile's major version by delta 81 static void increaseMajor(String cfile, int delta) { 82 try (RandomAccessFile cls = 83 new RandomAccessFile(new File(System.getProperty("test.classes", "."), cfile), "rw"); 84 FileChannel fc = cls.getChannel()) { 85 ByteBuffer rbuf = ByteBuffer.allocate(2); 86 fc.read(rbuf, 6); 87 ByteBuffer wbuf = ByteBuffer.allocate(2); 88 wbuf.putShort(0, (short)(rbuf.getShort(0) + delta)); 89 fc.write(wbuf, 6); 90 fc.force(false); 91 } catch (Exception e){ 92 throw new RuntimeException("Failed: unexpected exception"); 93 } 94 } 95} 96