75 lines
2.7 KiB
Java
75 lines
2.7 KiB
Java
/*
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* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6898851
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* @summary Compiling against this corrupt class file causes a stacktrace from javac
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*/
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import java.io.File;
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import java.io.FileWriter;
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import java.io.StringWriter;
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import java.io.PrintWriter;
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import java.io.IOException;
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import java.nio.file.Files;
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import com.sun.tools.javac.Main;
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public class BadClass {
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// Create and compile file containing body; return compiler output
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static String makeClass(String dir, String filename, String body) throws IOException {
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File file = new File(dir, filename);
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try (FileWriter fw = new FileWriter(file)) {
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fw.write(body);
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}
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StringWriter sw = new StringWriter();
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PrintWriter pw = new PrintWriter(sw);
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String args[] = { "-cp", dir, "-d", dir, "-XDrawDiagnostics", file.getPath() };
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Main.compile(args, pw);
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pw.close();
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return sw.toString();
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}
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public static void main(String... args) throws Exception {
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new File("d1").mkdir();
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new File("d2").mkdir();
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// Step 1. build an empty class with an interface
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makeClass("d1", "Empty.java", "abstract class Empty implements Readable {}");
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// Step 2. Modify classfile to have invalid constant pool index
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var cf = Files.readAllBytes(new File("d1","Empty.class").toPath());
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cf[9]--;
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Files.write(new File("d2","Empty.class").toPath(), cf);
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// Step 3. Compile use of invalid class
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String result = makeClass("d2", "EmptyUse.java", "class EmptyUse { Empty e; }");
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if (!result.contains("compiler.misc.bad.class.file")) {
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System.out.println(result);
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throw new Exception("test failed");
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}
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}
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}
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