Thu, 10 Oct 2013 14:58:04 +0200
8001931: The new build system whitespace cleanup
Reviewed-by: tbell, simonis, erikj
1 /*
2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @bug 8000518
27 * @summary Javac generates duplicate name_and_type constant pool entry for
28 * class BinaryOpValueExp.java
29 * @run main DuplicateConstantPoolEntry
30 */
32 import com.sun.source.util.JavacTask;
33 import com.sun.tools.classfile.ClassFile;
34 import com.sun.tools.classfile.ConstantPoolException;
35 import java.io.File;
36 import java.io.IOException;
37 import java.net.URI;
38 import java.util.Arrays;
39 import java.util.List;
40 import javax.tools.JavaCompiler;
41 import javax.tools.JavaFileObject;
42 import javax.tools.SimpleJavaFileObject;
43 import javax.tools.ToolProvider;
45 /*
46 * This bug was reproduced having two classes B and C referenced from a class A
47 * class C should be compiled and generated in advance. Later class A and B should
48 * be compiled like this: javac A.java B.java
49 */
51 public class DuplicateConstantPoolEntry {
53 public static void main(String args[]) throws Exception {
54 new DuplicateConstantPoolEntry().run();
55 }
57 void run() throws Exception {
58 generateFilesNeeded();
59 checkReference();
60 }
62 void generateFilesNeeded() throws Exception {
64 StringJavaFileObject[] CSource = new StringJavaFileObject[] {
65 new StringJavaFileObject("C.java",
66 "class C {C(String s) {}}"),
67 };
69 List<StringJavaFileObject> AandBSource = Arrays.asList(
70 new StringJavaFileObject("A.java",
71 "class A {void test() {new B(null);new C(null);}}"),
72 new StringJavaFileObject("B.java",
73 "class B {B(String s) {}}")
74 );
76 final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
77 JavacTask compileC = (JavacTask)tool.getTask(null, null, null, null, null,
78 Arrays.asList(CSource));
79 if (!compileC.call()) {
80 throw new AssertionError("Compilation error while compiling C.java sources");
81 }
82 JavacTask compileAB = (JavacTask)tool.getTask(null, null, null,
83 Arrays.asList("-cp", "."), null, AandBSource);
84 if (!compileAB.call()) {
85 throw new AssertionError("Compilation error while compiling A and B sources");
86 }
87 }
89 void checkReference() throws IOException, ConstantPoolException {
90 File file = new File("A.class");
91 ClassFile classFile = ClassFile.read(file);
92 for (int i = 1;
93 i < classFile.constant_pool.size() - 1;
94 i += classFile.constant_pool.get(i).size()) {
95 for (int j = i + classFile.constant_pool.get(i).size();
96 j < classFile.constant_pool.size();
97 j += classFile.constant_pool.get(j).size()) {
98 if (classFile.constant_pool.get(i).toString().
99 equals(classFile.constant_pool.get(j).toString())) {
100 throw new AssertionError(
101 "Duplicate entries in the constant pool at positions " +
102 i + " and " + j);
103 }
104 }
105 }
106 }
108 private static class StringJavaFileObject extends SimpleJavaFileObject {
109 StringJavaFileObject(String name, String text) {
110 super(URI.create(name), JavaFileObject.Kind.SOURCE);
111 this.text = text;
112 }
113 @Override
114 public CharSequence getCharContent(boolean b) {
115 return text;
116 }
117 private String text;
118 }
119 }