aoqi@0: /*
aoqi@0:  * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 8000518
aoqi@0:  * @summary Javac generates duplicate name_and_type constant pool entry for
aoqi@0:  * class BinaryOpValueExp.java
aoqi@0:  * @run main DuplicateConstantPoolEntry
aoqi@0:  */
aoqi@0: 
aoqi@0: import com.sun.source.util.JavacTask;
aoqi@0: import com.sun.tools.classfile.ClassFile;
aoqi@0: import com.sun.tools.classfile.ConstantPoolException;
aoqi@0: import java.io.File;
aoqi@0: import java.io.IOException;
aoqi@0: import java.net.URI;
aoqi@0: import java.util.Arrays;
aoqi@0: import java.util.List;
aoqi@0: import javax.tools.JavaCompiler;
aoqi@0: import javax.tools.JavaFileObject;
aoqi@0: import javax.tools.SimpleJavaFileObject;
aoqi@0: import javax.tools.ToolProvider;
aoqi@0: 
aoqi@0: /*
aoqi@0:  * This bug was reproduced having two classes B and C referenced from a class A
aoqi@0:  * class C should be compiled and generated in advance. Later class A and B should
aoqi@0:  * be compiled like this: javac A.java B.java
aoqi@0:  */
aoqi@0: 
aoqi@0: public class DuplicateConstantPoolEntry {
aoqi@0: 
aoqi@0:     public static void main(String args[]) throws Exception {
aoqi@0:         new DuplicateConstantPoolEntry().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws Exception {
aoqi@0:         generateFilesNeeded();
aoqi@0:         checkReference();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void generateFilesNeeded() throws Exception {
aoqi@0: 
aoqi@0:         StringJavaFileObject[] CSource = new StringJavaFileObject[] {
aoqi@0:             new StringJavaFileObject("C.java",
aoqi@0:                 "class C {C(String s) {}}"),
aoqi@0:         };
aoqi@0: 
aoqi@0:         List<StringJavaFileObject> AandBSource = Arrays.asList(
aoqi@0:                 new StringJavaFileObject("A.java",
aoqi@0:                     "class A {void test() {new B(null);new C(null);}}"),
aoqi@0:                 new StringJavaFileObject("B.java",
aoqi@0:                     "class B {B(String s) {}}")
aoqi@0:         );
aoqi@0: 
aoqi@0:         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
aoqi@0:         JavacTask compileC = (JavacTask)tool.getTask(null, null, null, null, null,
aoqi@0:                 Arrays.asList(CSource));
aoqi@0:         if (!compileC.call()) {
aoqi@0:             throw new AssertionError("Compilation error while compiling C.java sources");
aoqi@0:         }
aoqi@0:         JavacTask compileAB = (JavacTask)tool.getTask(null, null, null,
aoqi@0:                 Arrays.asList("-cp", "."), null, AandBSource);
aoqi@0:         if (!compileAB.call()) {
aoqi@0:             throw new AssertionError("Compilation error while compiling A and B sources");
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     void checkReference() throws IOException, ConstantPoolException {
aoqi@0:         File file = new File("A.class");
aoqi@0:         ClassFile classFile = ClassFile.read(file);
aoqi@0:         for (int i = 1;
aoqi@0:                 i < classFile.constant_pool.size() - 1;
aoqi@0:                 i += classFile.constant_pool.get(i).size()) {
aoqi@0:             for (int j = i + classFile.constant_pool.get(i).size();
aoqi@0:                     j < classFile.constant_pool.size();
aoqi@0:                     j += classFile.constant_pool.get(j).size()) {
aoqi@0:                 if (classFile.constant_pool.get(i).toString().
aoqi@0:                         equals(classFile.constant_pool.get(j).toString())) {
aoqi@0:                     throw new AssertionError(
aoqi@0:                             "Duplicate entries in the constant pool at positions " +
aoqi@0:                             i + " and " + j);
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static class StringJavaFileObject extends SimpleJavaFileObject {
aoqi@0:         StringJavaFileObject(String name, String text) {
aoqi@0:             super(URI.create(name), JavaFileObject.Kind.SOURCE);
aoqi@0:             this.text = text;
aoqi@0:         }
aoqi@0:         @Override
aoqi@0:         public CharSequence getCharContent(boolean b) {
aoqi@0:             return text;
aoqi@0:         }
aoqi@0:         private String text;
aoqi@0:     }
aoqi@0: }