1 /* |
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /** |
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25 * @test |
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26 * @bug 8003639 |
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27 * @summary defaultMethod resolution and verification |
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28 * @run main DefaultMethodRegressionTests |
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29 */ |
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30 |
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31 import java.util.ArrayList; |
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32 import java.util.Arrays; |
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33 import java.util.List; |
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34 |
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35 /** |
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36 * This set of classes/interfaces (K/I/C) is specially designed to expose a |
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37 * bug in the JVM where it did not find some overloaded methods in some |
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38 * specific situations. (fixed by hotspot changeset ffb9316fd9ed). |
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39 */ |
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40 interface K { |
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41 int bbb(Long l); |
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42 } |
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43 |
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44 interface I extends K { |
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45 default void aaa() {} |
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46 default void aab() {} |
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47 default void aac() {} |
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48 |
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49 default int bbb(Integer i) { return 22; } |
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50 default int bbb(Float f) { return 33; } |
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51 default int bbb(Long l) { return 44; } |
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52 default int bbb(Double d) { return 55; } |
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53 default int bbb(String s) { return 66; } |
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54 |
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55 default void caa() {} |
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56 default void cab() {} |
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57 default void cac() {} |
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58 } |
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59 |
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60 class C implements I {} |
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61 |
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62 public class DefaultMethodRegressionTests { |
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63 public static void main(String... args) { |
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64 new DefaultMethodRegressionTests().run(args); |
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65 } |
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66 void run(String... args) { |
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67 testLostOverloadedMethod(); |
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68 System.out.println("testLostOverloadedMethod: OK"); |
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69 testInferenceVerifier(); |
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70 System.out.println("testInferenceVerifier: OK"); |
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71 } |
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72 void testLostOverloadedMethod() { |
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73 C c = new C(); |
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74 assertEquals(c.bbb(new Integer(1)), 22); |
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75 assertEquals(c.bbb(new Float(1.1)), 33); |
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76 assertEquals(c.bbb(new Long(1L)), 44); |
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77 assertEquals(c.bbb(new Double(0.01)), 55); |
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78 assertEquals(c.bbb(new String("")), 66); |
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79 } |
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80 // Test to ensure that the inference verifier accepts older classfiles |
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81 // with classes that implement interfaces with defaults. |
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82 void testInferenceVerifier() { |
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83 // interface I { int m() default { return 99; } } |
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84 byte I_bytes[] = { |
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85 (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x34, |
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86 0x00, 0x08, 0x07, 0x00, 0x06, 0x07, 0x00, 0x07, |
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87 0x01, 0x00, 0x03, 0x66, 0x6f, 0x6f, 0x01, 0x00, |
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88 0x03, 0x28, 0x29, 0x49, 0x01, 0x00, 0x04, 0x43, |
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89 0x6f, 0x64, 0x65, 0x01, 0x00, 0x01, 0x49, 0x01, |
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90 0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, |
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91 0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65, |
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92 0x63, 0x74, 0x06, 0x00, 0x00, 0x01, 0x00, 0x02, |
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93 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x01, |
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94 0x00, 0x03, 0x00, 0x04, 0x00, 0x01, 0x00, 0x05, |
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95 0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x00, 0x01, |
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96 0x00, 0x00, 0x00, 0x03, 0x10, 0x63, (byte)0xac, 0x00, |
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97 0x00, 0x00, 0x00, 0x00, 0x00 |
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98 }; |
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99 // public class C implements I {} /* -target 1.5 */ |
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100 byte C_bytes[] = { |
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101 (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x31, |
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102 0x00, 0x0c, 0x0a, 0x00, 0x03, 0x00, 0x08, 0x07, |
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103 0x00, 0x09, 0x07, 0x00, 0x0a, 0x07, 0x00, 0x0b, |
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104 0x01, 0x00, 0x06, 0x3c, 0x69, 0x6e, 0x69, 0x74, |
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105 0x3e, 0x01, 0x00, 0x03, 0x28, 0x29, 0x56, 0x01, |
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106 0x00, 0x04, 0x43, 0x6f, 0x64, 0x65, 0x0c, 0x00, |
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107 0x05, 0x00, 0x06, 0x01, 0x00, 0x01, 0x43, 0x01, |
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108 0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, |
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109 0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65, |
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110 0x63, 0x74, 0x01, 0x00, 0x01, 0x49, 0x00, 0x21, |
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111 0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x04, |
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112 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x05, |
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113 0x00, 0x06, 0x00, 0x01, 0x00, 0x07, 0x00, 0x00, |
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114 0x00, 0x11, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, |
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115 0x00, 0x05, 0x2a, (byte)0xb7, 0x00, 0x01, (byte)0xb1, 0x00, |
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116 0x00, 0x00, 0x00, 0x00, 0x00 |
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117 }; |
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118 |
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119 ClassLoader cl = new ClassLoader() { |
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120 protected Class<?> findClass(String name) { |
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121 if (name.equals("I")) { |
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122 return defineClass("I", I_bytes, 0, I_bytes.length); |
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123 } else if (name.equals("C")) { |
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124 return defineClass("C", C_bytes, 0, C_bytes.length); |
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125 } else { |
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126 return null; |
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127 } |
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128 } |
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129 }; |
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130 try { |
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131 Class.forName("C", true, cl); |
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132 } catch (Exception e) { |
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133 // unmodified verifier will throw VerifyError |
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134 throw new RuntimeException(e); |
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135 } |
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136 } |
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137 void assertEquals(Object o1, Object o2) { |
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138 System.out.print("Expected: " + o1); |
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139 System.out.println(", Obtained: " + o2); |
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140 if (!o1.equals(o2)) { |
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141 throw new RuntimeException("got unexpected values"); |
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142 } |
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143 } |
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144 } |
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