119 lines
4.3 KiB
Java
119 lines
4.3 KiB
Java
/*
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* Copyright (c) 2002, 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 8000518
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* @summary Javac generates duplicate name_and_type constant pool entry for
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* class BinaryOpValueExp.java
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* @enablePreview
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* @modules java.base/jdk.internal.classfile.impl
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* @run main DuplicateConstantPoolEntry
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*/
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import com.sun.source.util.JavacTask;
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import java.lang.classfile.*;
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import java.lang.classfile.constantpool.ConstantPool;
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import java.lang.classfile.constantpool.PoolEntry;
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import java.io.File;
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import java.io.IOException;
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import java.net.URI;
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import java.util.Arrays;
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import java.util.List;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.ToolProvider;
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/*
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* This bug was reproduced having two classes B and C referenced from a class A
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* class C should be compiled and generated in advance. Later class A and B should
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* be compiled like this: javac A.java B.java
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*/
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public class DuplicateConstantPoolEntry {
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public static void main(String args[]) throws Exception {
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new DuplicateConstantPoolEntry().run();
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}
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void run() throws Exception {
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generateFilesNeeded();
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checkReference();
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}
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void generateFilesNeeded() throws Exception {
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StringJavaFileObject[] CSource = new StringJavaFileObject[] {
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new StringJavaFileObject("C.java",
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"class C {C(String s) {}}"),
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};
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List<StringJavaFileObject> AandBSource = Arrays.asList(
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new StringJavaFileObject("A.java",
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"class A {void test() {new B(null);new C(null);}}"),
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new StringJavaFileObject("B.java",
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"class B {B(String s) {}}")
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);
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final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
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JavacTask compileC = (JavacTask)tool.getTask(null, null, null, null, null,
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Arrays.asList(CSource));
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if (!compileC.call()) {
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throw new AssertionError("Compilation error while compiling C.java sources");
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}
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JavacTask compileAB = (JavacTask)tool.getTask(null, null, null,
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Arrays.asList("-cp", "."), null, AandBSource);
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if (!compileAB.call()) {
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throw new AssertionError("Compilation error while compiling A and B sources");
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}
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}
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void checkReference() throws IOException {
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File file = new File("A.class");
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ClassModel classFile = ClassFile.of().parse(file.toPath());
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ConstantPool constantPool = classFile.constantPool();
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for (PoolEntry pe1 : constantPool) {
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for (PoolEntry pe2 : constantPool) {
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if (pe2.index() > pe1.index() && pe1.equals(pe2)) {
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throw new AssertionError(
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"Duplicate entries in the constant pool at positions " +
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pe1.index() + " and " + pe2.index());
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}
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}
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}
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}
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private static class StringJavaFileObject extends SimpleJavaFileObject {
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StringJavaFileObject(String name, String text) {
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super(URI.create(name), JavaFileObject.Kind.SOURCE);
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this.text = text;
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}
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@Override
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public CharSequence getCharContent(boolean b) {
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return text;
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}
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private String text;
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}
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}
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