1 /*
2 * Copyright (c) 2006, 2018, 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 8188870 8193290
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 12 -target 13 T1.java
36 * @compile -source 12 -target 13 T2.java
37 * @run main/othervm T6330997
38 */
39
40 import java.nio.*;
41 import java.io.*;
42 import java.nio.channels.*;
43
44 import com.sun.tools.javac.api.JavacTaskImpl;
45 import com.sun.tools.javac.code.ClassFinder.BadClassFile;
46 import com.sun.tools.javac.code.Symtab;
47 import com.sun.tools.javac.util.Names;
48 import javax.tools.ToolProvider;
49
50 public class T6330997 {
51 public static void main(String... args) {
52 increaseMajor("T1.class", 1);
53 increaseMajor("T2.class", 2);
54 javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
55 JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
56 Symtab syms = Symtab.instance(task.getContext());
57 Names names = Names.instance(task.getContext());
58 task.ensureEntered();
59 try {
60 syms.enterClass(syms.unnamedModule, names.fromString("T1")).complete();
61 } catch (Exception e) {
62 e.printStackTrace();
63 throw new RuntimeException("Failed: unexpected exception while reading class T1");
64 }
65 try {
66 syms.enterClass(syms.unnamedModule, names.fromString("T2")).complete();
67 } catch (BadClassFile e) {
68 System.err.println("Passed: expected completion failure " + e.getClass().getName());
69 return;
70 } catch (Exception e) {
71 e.printStackTrace();
72 throw new RuntimeException("Failed: unexpected exception while reading class T2");
73 }
74 throw new RuntimeException("Failed: no error reported");
75 }
76
77 // Increase class file cfile's major version by delta
78 static void increaseMajor(String cfile, int delta) {
79 try (RandomAccessFile cls =
80 new RandomAccessFile(new File(System.getProperty("test.classes", "."), cfile), "rw");
81 FileChannel fc = cls.getChannel()) {
82 ByteBuffer rbuf = ByteBuffer.allocate(2);
83 fc.read(rbuf, 6);
84 ByteBuffer wbuf = ByteBuffer.allocate(2);
85 wbuf.putShort(0, (short)(rbuf.getShort(0) + delta));
86 fc.write(wbuf, 6);
87 fc.force(false);
88 } catch (Exception e){
89 throw new RuntimeException("Failed: unexpected exception");
90 }
91 }
92 }