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/*
* Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 6330997 7025789 8000961
* @summary javac should accept class files with major version of the next release
* @author Wei Tao
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.code
* jdk.compiler/com.sun.tools.javac.comp
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.util
* @clean T1 T2
* @compile -source 9 -target 9 T1.java
* @compile -source 9 -target 9 T2.java
* @run main/othervm T6330997
*/
import java.nio.*;
import java.io.*;
import java.nio.channels.*;
import com.sun.tools.javac.api.JavacTaskImpl;
import com.sun.tools.javac.code.ClassFinder.BadClassFile;
import com.sun.tools.javac.code.Symtab;
import com.sun.tools.javac.main.JavaCompiler;
import javax.tools.ToolProvider;
public class T6330997 {
public static void main(String... args) {
increaseMajor("T1.class", 1);
increaseMajor("T2.class", 2);
javax.tools.JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
JavacTaskImpl task = (JavacTaskImpl)tool.getTask(null, null, null, null, null, null);
JavaCompiler compiler = JavaCompiler.instance(task.getContext());
Symtab syms = Symtab.instance(task.getContext());
task.ensureEntered();
try {
compiler.resolveIdent(syms.unnamedModule, "T1").complete();
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Failed: unexpected exception while reading class T1");
}
try {
compiler.resolveIdent(syms.unnamedModule, "T2").complete();
} catch (BadClassFile e) {
System.err.println("Passed: expected completion failure " + e.getClass().getName());
return;
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Failed: unexpected exception while reading class T2");
}
throw new RuntimeException("Failed: no error reported");
}
// Increase class file cfile's major version by delta
static void increaseMajor(String cfile, int delta) {
try (RandomAccessFile cls =
new RandomAccessFile(new File(System.getProperty("test.classes", "."), cfile), "rw");
FileChannel fc = cls.getChannel()) {
ByteBuffer rbuf = ByteBuffer.allocate(2);
fc.read(rbuf, 6);
ByteBuffer wbuf = ByteBuffer.allocate(2);
wbuf.putShort(0, (short)(rbuf.getShort(0) + delta));
fc.write(wbuf, 6);
fc.force(false);
} catch (Exception e){
throw new RuntimeException("Failed: unexpected exception");
}
}
}
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