1/* 2 * Copyright (c) 2010, 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 6979683 27 * @summary Verify that casts can narrow and unbox at the same time 28 * @author jrose 29 * 30 * @compile TestCast6979683_GOOD.java 31 * @run main TestCast6979683_GOOD 32 */ 33 34public class TestCast6979683_GOOD { 35 public static void main(String... av) { 36 bugReportExample(); 37 for (int x = -1; x <= 2; x++) { 38 zconvTests(x != 0); 39 iconvTests(x); 40 bconvTests((byte)x); 41 cconvTests((char)x); 42 } 43 System.out.println("Successfully ran "+tests+" tests."); 44 } 45 46 static int tests; 47 static void assertEquals(Object x, Object y) { 48 if (!x.equals(y)) { 49 throw new RuntimeException("assertEquals: "+x+" != "+y); 50 } 51 ++tests; 52 } 53 54 static void bugReportExample() { 55 {} // example in bug report: 56 Object x = (Object)1; 57 int y = (int)x; 58 {} // end example 59 } 60 61 static boolean zconv1(Boolean o) { return o; } 62 static boolean zconv2(Object o) { return (boolean)o; } 63 static boolean zconv3(Comparable<Boolean> o) { return (boolean)o; } 64 65 static void zconvTests(boolean x) { 66 assertEquals(x, zconv1(x)); 67 assertEquals(x, zconv2(x)); 68 assertEquals(x, zconv3(x)); 69 } 70 71 static int iconv1(Integer o) { return o; } 72 static int iconv2(Object o) { return (int)o; } 73 static int iconv3(java.io.Serializable o) { return (int)o; } 74 static int iconv4(Number o) { return (int)o; } 75 static int iconv5(Comparable<Integer> o) { return (int)o; } 76 77 static void iconvTests(int x) { 78 assertEquals(x, iconv1(x)); 79 assertEquals(x, iconv2(x)); 80 assertEquals(x, iconv3(x)); 81 assertEquals(x, iconv4(x)); 82 assertEquals(x, iconv5(x)); 83 } 84 85 static float bconv1(Byte o) { return o; } // note type "float" 86 static float bconv2(Object o) { return (byte)o; } 87 static float bconv3(java.io.Serializable o) { return (byte)o; } 88 static float bconv4(Number o) { return (byte)o; } 89 90 static void bconvTests(byte x) { 91 float xf = x; 92 assertEquals(xf, bconv1(x)); 93 assertEquals(xf, bconv2(x)); 94 assertEquals(xf, bconv3(x)); 95 assertEquals(xf, bconv4(x)); 96 } 97 98 static float cconv1(Character o) { return o; } // note type "float" 99 static float cconv2(Object o) { return (char)o; } 100 static float cconv3(java.io.Serializable o) { return (char)o; } 101 static float cconv4(Comparable<Character> o) { return (char)o; } 102 103 static void cconvTests(char x) { 104 float xf = x; 105 assertEquals(xf, cconv1(x)); 106 assertEquals(xf, cconv2(x)); 107 assertEquals(xf, cconv3(x)); 108 assertEquals(xf, cconv4(x)); 109 } 110 111} 112