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
jjg@46 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved. |
jjg@46 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jjg@46 | 4 | * |
jjg@46 | 5 | * This code is free software; you can redistribute it and/or modify it |
jjg@46 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
jjg@46 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
jjg@46 | 10 | * |
jjg@46 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jjg@46 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jjg@46 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jjg@46 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
jjg@46 | 15 | * accompanied this code). |
jjg@46 | 16 | * |
jjg@46 | 17 | * You should have received a copy of the GNU General Public License version |
jjg@46 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
jjg@46 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jjg@46 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
jjg@46 | 24 | */ |
jjg@46 | 25 | |
jjg@46 | 26 | package com.sun.tools.classfile; |
jjg@46 | 27 | |
jjg@46 | 28 | import java.io.IOException; |
jjg@46 | 29 | |
jjg@46 | 30 | /** |
jjh@972 | 31 | * See JVMS, section 4.8.14. |
jjg@46 | 32 | * |
jjg@581 | 33 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 34 | * If you write code that depends on this, you do so at your own risk. |
jjg@46 | 35 | * This code and its internal interfaces are subject to change or |
jjg@46 | 36 | * deletion without notice.</b> |
jjg@46 | 37 | */ |
jjg@46 | 38 | public class LocalVariableTypeTable_attribute extends Attribute { |
jjg@46 | 39 | LocalVariableTypeTable_attribute(ClassReader cr, int name_index, int length) throws IOException { |
jjg@46 | 40 | super(name_index, length); |
jjg@46 | 41 | local_variable_table_length = cr.readUnsignedShort(); |
jjg@46 | 42 | local_variable_table = new Entry[local_variable_table_length]; |
jjg@46 | 43 | for (int i = 0; i < local_variable_table_length; i++) |
jjg@46 | 44 | local_variable_table[i] = new Entry(cr); |
jjg@46 | 45 | } |
jjg@46 | 46 | |
jjg@46 | 47 | public LocalVariableTypeTable_attribute(ConstantPool constant_pool, Entry[] local_variable_table) |
jjg@46 | 48 | throws ConstantPoolException { |
jjg@46 | 49 | this(constant_pool.getUTF8Index(Attribute.LocalVariableTypeTable), local_variable_table); |
jjg@46 | 50 | } |
jjg@46 | 51 | |
jjg@46 | 52 | public LocalVariableTypeTable_attribute(int name_index, Entry[] local_variable_table) { |
jjg@339 | 53 | super(name_index, 2 + local_variable_table.length * Entry.length()); |
jjg@46 | 54 | this.local_variable_table_length = local_variable_table.length; |
jjg@46 | 55 | this.local_variable_table = local_variable_table; |
jjg@46 | 56 | } |
jjg@46 | 57 | |
jjg@46 | 58 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
jjg@46 | 59 | return visitor.visitLocalVariableTypeTable(this, data); |
jjg@46 | 60 | } |
jjg@46 | 61 | |
jjg@46 | 62 | public final int local_variable_table_length; |
jjg@46 | 63 | public final Entry[] local_variable_table; |
jjg@46 | 64 | |
jjg@46 | 65 | public static class Entry { |
jjg@46 | 66 | Entry(ClassReader cr) throws IOException { |
jjg@46 | 67 | start_pc = cr.readUnsignedShort(); |
jjg@46 | 68 | length = cr.readUnsignedShort(); |
jjg@46 | 69 | name_index = cr.readUnsignedShort(); |
jjg@46 | 70 | signature_index = cr.readUnsignedShort(); |
jjg@46 | 71 | index = cr.readUnsignedShort(); |
jjg@46 | 72 | } |
jjg@46 | 73 | |
jjg@46 | 74 | public static int length() { |
jjg@46 | 75 | return 10; |
jjg@46 | 76 | } |
jjg@46 | 77 | |
jjg@46 | 78 | public final int start_pc; |
jjg@46 | 79 | public final int length; |
jjg@46 | 80 | public final int name_index; |
jjg@46 | 81 | public final int signature_index; |
jjg@46 | 82 | public final int index; |
jjg@46 | 83 | } |
jjg@46 | 84 | } |