1 /* 2 * Copyright (c) 2019, 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 */ 23 24 /** 25 * @test 26 * @bug 8217872 8221545 27 * @summary [lworld] Javac forbids look ups on the light weight box type of a value type 28 * @run main/othervm -Xverify:none LookupOnLoxTest2 29 */ 30 31 public primitive class LookupOnLoxTest2 { 32 33 int ARRAY[] = { 10, 20, 30 }; 34 35 static primitive class Tuple { 36 private final int index; 37 private final int element; 38 39 private Tuple(int index, int element) { 40 this.index = index; 41 this.element = element; 42 } 43 } 44 45 static primitive class Cursor { 46 private final int[] array; 47 private final int index; 48 49 private Cursor(int[] array, int index) { 50 this.array = array; 51 this.index = index; 52 } 53 54 Tuple current() { 55 return new Tuple(index, array[index]); 56 } 57 58 Cursor.ref next() { 59 if (index + 1 == array.length) { 60 return null; 61 } 62 return new Cursor(array, index + 1); 63 } 64 } 65 66 private static Cursor.ref indexedElements(int[] array) { 67 if (array.length == 0) { 68 return null; 69 } 70 return new Cursor(array, 0); 71 } 72 73 public int sum() { 74 int sum = 0; 75 for (Cursor.ref cursor = indexedElements(ARRAY); cursor != null; cursor = cursor.next()) { 76 Tuple tuple = cursor.current(); 77 sum += tuple.index + tuple.element; 78 } 79 return sum; 80 } 81 82 public static void main(String [] args) { 83 LookupOnLoxTest2 x = new LookupOnLoxTest2(); 84 if (x.sum() != 63 || x.ARRAY.length != 3) { 85 throw new AssertionError("Broken"); 86 } 87 LookupOnLoxTest2.ref xbox = x; 88 if (xbox.sum() != 63 || xbox.ARRAY.length != 3) { 89 throw new AssertionError("Broken"); 90 } 91 } 92 }