1 /* 2 * Copyright (c) 2012, 2013, 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 package vm; 25 26 import java.util.ArrayList; 27 import java.util.Arrays; 28 import java.util.List; 29 import org.testng.annotations.Test; 30 31 import static org.testng.Assert.*; 32 33 /** 34 * This set of classes/interfaces (K/I/C) is specially designed to expose a 35 * bug in the JVM where it did not find some overloaded methods in some 36 * specific situations. (fixed by hotspot changeset ffb9316fd9ed) 37 */ 38 interface K { bbb(Long l)39 int bbb(Long l); 40 } 41 42 interface I extends K { aaa()43 default void aaa() {} aab()44 default void aab() {} aac()45 default void aac() {} 46 bbb(Integer i)47 default int bbb(Integer i) { return 22; } bbb(Float f)48 default int bbb(Float f) { return 33; } bbb(Long l)49 default int bbb(Long l) { return 44; } bbb(Double d)50 default int bbb(Double d) { return 55; } bbb(String s)51 default int bbb(String s) { return 66; } 52 caa()53 default void caa() {} cab()54 default void cab() {} cac()55 default void cac() {} 56 } 57 58 class C implements I {} 59 60 public class DefaultMethodRegressionTests { 61 62 @Test(groups = "vm") testLostOverloadedMethod()63 public void testLostOverloadedMethod() { 64 C c = new C(); 65 assertEquals(c.bbb(new Integer(1)), 22); 66 assertEquals(c.bbb(new Float(1.1)), 33); 67 assertEquals(c.bbb(new Long(1L)), 44); 68 assertEquals(c.bbb(new Double(0.01)), 55); 69 assertEquals(c.bbb(new String("")), 66); 70 } 71 72 // Test to ensure that the inference verifier accepts older classfiles 73 // with classes that implement interfaces with defaults. 74 @Test(groups = "vm") testInferenceVerifier()75 public void testInferenceVerifier() { 76 // interface I { int m() default { return 99; } } 77 byte I_bytes[] = { 78 (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x34, 79 0x00, 0x08, 0x07, 0x00, 0x06, 0x07, 0x00, 0x07, 80 0x01, 0x00, 0x03, 0x66, 0x6f, 0x6f, 0x01, 0x00, 81 0x03, 0x28, 0x29, 0x49, 0x01, 0x00, 0x04, 0x43, 82 0x6f, 0x64, 0x65, 0x01, 0x00, 0x01, 0x49, 0x01, 83 0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, 84 0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65, 85 0x63, 0x74, 0x06, 0x00, 0x00, 0x01, 0x00, 0x02, 86 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x01, 87 0x00, 0x03, 0x00, 0x04, 0x00, 0x01, 0x00, 0x05, 88 0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x00, 0x01, 89 0x00, 0x00, 0x00, 0x03, 0x10, 0x63, (byte)0xac, 0x00, 90 0x00, 0x00, 0x00, 0x00, 0x00 91 }; 92 // public class C implements I {} /* -target 1.5 */ 93 byte C_bytes[] = { 94 (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x31, 95 0x00, 0x0c, 0x0a, 0x00, 0x03, 0x00, 0x08, 0x07, 96 0x00, 0x09, 0x07, 0x00, 0x0a, 0x07, 0x00, 0x0b, 97 0x01, 0x00, 0x06, 0x3c, 0x69, 0x6e, 0x69, 0x74, 98 0x3e, 0x01, 0x00, 0x03, 0x28, 0x29, 0x56, 0x01, 99 0x00, 0x04, 0x43, 0x6f, 0x64, 0x65, 0x0c, 0x00, 100 0x05, 0x00, 0x06, 0x01, 0x00, 0x01, 0x43, 0x01, 101 0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, 102 0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65, 103 0x63, 0x74, 0x01, 0x00, 0x01, 0x49, 0x00, 0x21, 104 0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x04, 105 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x05, 106 0x00, 0x06, 0x00, 0x01, 0x00, 0x07, 0x00, 0x00, 107 0x00, 0x11, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 108 0x00, 0x05, 0x2a, (byte)0xb7, 0x00, 0x01, (byte)0xb1, 0x00, 109 0x00, 0x00, 0x00, 0x00, 0x00 110 }; 111 112 ClassLoader cl = new ClassLoader() { 113 protected Class<?> findClass(String name) { 114 if (name.equals("I")) { 115 return defineClass("I", I_bytes, 0, I_bytes.length); 116 } else if (name.equals("C")) { 117 return defineClass("C", C_bytes, 0, C_bytes.length); 118 } else { 119 return null; 120 } 121 } 122 }; 123 try { 124 Class.forName("C", true, cl); 125 } catch (Exception e) { 126 // unmodified verifier will throw VerifyError 127 fail("No exception should be thrown"); 128 } 129 } 130 } 131