jdk8-mips64-public/langtools: test/tools/javac/6330997/T6330997.java@7909abb85562

     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  */

    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  */

    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;

    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     }

    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 }

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