| /* |
| * Copyright (c) 2014, 2015, 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 6898851 |
| * @summary Compiling against this corrupt class file causes a stacktrace from javac |
| * @modules jdk.jdeps/com.sun.tools.classfile |
| */ |
| |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.StringWriter; |
| import java.io.PrintWriter; |
| import java.io.IOException; |
| |
| import com.sun.tools.classfile.ClassFile; |
| import com.sun.tools.classfile.ClassWriter; |
| import com.sun.tools.javac.Main; |
| |
| public class BadClass { |
| // Create and compile file containing body; return compiler output |
| static String makeClass(String dir, String filename, String body) throws IOException { |
| File file = new File(dir, filename); |
| try (FileWriter fw = new FileWriter(file)) { |
| fw.write(body); |
| } |
| |
| StringWriter sw = new StringWriter(); |
| PrintWriter pw = new PrintWriter(sw); |
| String args[] = { "-cp", dir, "-d", dir, "-XDrawDiagnostics", file.getPath() }; |
| Main.compile(args, pw); |
| pw.close(); |
| return sw.toString(); |
| } |
| |
| public static void main(String... args) throws Exception { |
| new File("d1").mkdir(); |
| new File("d2").mkdir(); |
| |
| // Step 1. build an empty class with an interface |
| makeClass("d1", "Empty.java", "abstract class Empty implements Readable {}"); |
| |
| // Step 2. Modify classfile to have invalid constant pool index |
| ClassFile cf = ClassFile.read(new File("d1","Empty.class")); |
| cf.interfaces[0] = cf.constant_pool.size() + 10; |
| ClassWriter cw = new ClassWriter(); |
| cw.write(cf, new File("d2","Empty.class")); |
| |
| // Step 3. Compile use of invalid class |
| String result = makeClass("d2", "EmptyUse.java", "class EmptyUse { Empty e; }"); |
| if (!result.contains("compiler.misc.bad.class.file")) { |
| System.out.println(result); |
| throw new Exception("test failed"); |
| } |
| } |
| } |