Thu, 12 Jan 2012 15:28:34 +0000
7123100: javac fails with java.lang.StackOverflowError
Summary: Inference of under-constrained type-variables creates erroneous recursive wildcard types
Reviewed-by: jjg
1 /*
2 * Copyright (c) 2007, 2008, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
26 package com.sun.tools.classfile;
28 import java.io.IOException;
30 import com.sun.tools.classfile.ConstantPool.*;
32 /**
33 * See JVMS, section 4.8.6.
34 *
35 * <p><b>This is NOT part of any supported API.
36 * If you write code that depends on this, you do so at your own risk.
37 * This code and its internal interfaces are subject to change or
38 * deletion without notice.</b>
39 */
40 public class InnerClasses_attribute extends Attribute {
41 InnerClasses_attribute(ClassReader cr, int name_index, int length) throws IOException {
42 super(name_index, length);
43 number_of_classes = cr.readUnsignedShort();
44 classes = new Info[number_of_classes];
45 for (int i = 0; i < number_of_classes; i++)
46 classes[i] = new Info(cr);
47 }
49 public InnerClasses_attribute(ConstantPool constant_pool, Info[] classes)
50 throws ConstantPoolException {
51 this(constant_pool.getUTF8Index(Attribute.InnerClasses), classes);
52 }
54 public InnerClasses_attribute(int name_index, Info[] classes) {
55 super(name_index, 2 + Info.length() * classes.length);
56 this.number_of_classes = classes.length;
57 this.classes = classes;
58 }
60 public <R, D> R accept(Visitor<R, D> visitor, D data) {
61 return visitor.visitInnerClasses(this, data);
62 }
64 public final int number_of_classes;
65 public final Info[] classes;
67 public static class Info {
68 Info(ClassReader cr) throws IOException {
69 inner_class_info_index = cr.readUnsignedShort();
70 outer_class_info_index = cr.readUnsignedShort();
71 inner_name_index = cr.readUnsignedShort();
72 inner_class_access_flags = new AccessFlags(cr.readUnsignedShort());
73 }
75 public CONSTANT_Class_info getInnerClassInfo(ConstantPool constant_pool) throws ConstantPoolException {
76 if (inner_class_info_index == 0)
77 return null;
78 return constant_pool.getClassInfo(inner_class_info_index);
79 }
81 public CONSTANT_Class_info getOuterClassInfo(ConstantPool constant_pool) throws ConstantPoolException {
82 if (outer_class_info_index == 0)
83 return null;
84 return constant_pool.getClassInfo(outer_class_info_index);
85 }
87 public String getInnerName(ConstantPool constant_pool) throws ConstantPoolException {
88 if (inner_name_index == 0)
89 return null;
90 return constant_pool.getUTF8Value(inner_name_index);
91 }
93 public static int length() {
94 return 8;
95 }
97 public final int inner_class_info_index;
98 public final int outer_class_info_index;
99 public final int inner_name_index;
100 public final AccessFlags inner_class_access_flags;
101 }
102 }