Tue, 16 Jun 2009 10:46:37 +0100
6638712: Inference with wildcard types causes selection of inapplicable method
Summary: Added global sanity check in order to make sure that return type inference does not violate bounds constraints
Reviewed-by: jjg
duke@1 | 1 | /* |
duke@1 | 2 | * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@1 | 7 | * published by the Free Software Foundation. Sun designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
duke@1 | 9 | * by Sun in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
duke@1 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@1 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@1 | 23 | * have any questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javac.jvm; |
duke@1 | 27 | |
duke@1 | 28 | import com.sun.tools.javac.code.*; |
duke@1 | 29 | |
duke@1 | 30 | |
duke@1 | 31 | /** These pseudo-types appear in the generated verifier tables to |
duke@1 | 32 | * indicate objects that have been allocated but not yet constructed. |
duke@1 | 33 | * |
duke@1 | 34 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
duke@1 | 35 | * you write code that depends on this, you do so at your own risk. |
duke@1 | 36 | * This code and its internal interfaces are subject to change or |
duke@1 | 37 | * deletion without notice.</b> |
duke@1 | 38 | */ |
duke@1 | 39 | class UninitializedType extends Type.DelegatedType { |
duke@1 | 40 | public static final int UNINITIALIZED_THIS = TypeTags.TypeTagCount; |
duke@1 | 41 | public static final int UNINITIALIZED_OBJECT = UNINITIALIZED_THIS + 1; |
duke@1 | 42 | |
duke@1 | 43 | public static UninitializedType uninitializedThis(Type qtype) { |
duke@1 | 44 | return new UninitializedType(UNINITIALIZED_THIS, qtype, -1); |
duke@1 | 45 | } |
duke@1 | 46 | |
duke@1 | 47 | public static UninitializedType uninitializedObject(Type qtype, int offset) { |
duke@1 | 48 | return new UninitializedType(UNINITIALIZED_OBJECT, qtype, offset); |
duke@1 | 49 | } |
duke@1 | 50 | |
duke@1 | 51 | public final int offset; // PC where allocation took place |
duke@1 | 52 | private UninitializedType(int tag, Type qtype, int offset) { |
duke@1 | 53 | super(tag, qtype); |
duke@1 | 54 | this.offset = offset; |
duke@1 | 55 | } |
duke@1 | 56 | |
duke@1 | 57 | Type initializedType() { |
duke@1 | 58 | return qtype; |
duke@1 | 59 | } |
duke@1 | 60 | } |