1 /* 2 * Copyright (c) 2014, 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 package org.graalvm.compiler.core.test; 24 25 import jdk.vm.ci.meta.Assumptions.AssumptionResult; 26 import jdk.vm.ci.meta.ResolvedJavaMethod; 27 import jdk.vm.ci.meta.ResolvedJavaType; 28 29 import org.junit.Assert; 30 import org.junit.Ignore; 31 import org.junit.Test; 32 33 public class FindUniqueConcreteMethodBugTest extends GraalCompilerTest { 34 35 // To cause a C1 or C2 crash: -DFindUniqueConcreteMethodBugTest.ITERATIONS=10000 36 private static final int ITERATIONS = Integer.getInteger("FindUniqueConcreteMethodBugTest.ITERATIONS", 100); 37 38 /** 39 * Executing {@link ResolvedJavaType#findUniqueConcreteMethod(ResolvedJavaMethod)} for the 40 * method {@link Person#getName()} on the type {@link AbstractPerson} should return null as both 41 * {@link PersonImpl} and {@link TenantImpl} provide implementations (namely 42 * {@link PersonImpl#getName()} and {@link Tenant#getName()}). 43 */ 44 @Test 45 @Ignore("fix HotSpotResolvedObjectTypeImpl.findUniqueConcreteMethod") 46 public void test() throws NoSuchMethodException { 47 ResolvedJavaMethod ifaceMethod = getMetaAccess().lookupJavaMethod(Person.class.getDeclaredMethod("getName")); 48 49 PersonImpl person = new PersonImpl("maya"); 50 TenantImpl tenant = new TenantImpl(0xdeadbeef); 51 52 // Ensure the relevant methods are linked 53 person.getName(); 54 tenant.getName(); 55 56 for (int i = 0; i < ITERATIONS; i++) { 57 getLabelLength(person); 58 getLabelLength(tenant); 59 } 60 61 // Until HotSpotResolvedObjectTypeImpl.findUniqueConcreteMethod is fixed, 62 // this causes a VM crash as getLabelLength() directly invokes PersonImpl.getName(). 63 test("getLabelLength", tenant); 64 65 ResolvedJavaMethod expected = null; 66 AssumptionResult<ResolvedJavaMethod> actual = getMetaAccess().lookupJavaType(AbstractPerson.class).findUniqueConcreteMethod(ifaceMethod); 67 Assert.assertEquals(expected, actual.getResult()); 68 69 } 70 71 public int getLabelLength(AbstractPerson person) { 72 return person.getName().length(); 73 } 74 75 interface Person { 76 String getName(); 77 78 default int getId() { 79 return -1; 80 } 81 } 82 83 interface Tenant extends Person { 84 @Override 85 default String getName() { 86 return getAddress(); 87 } 88 89 String getAddress(); 90 } 91 92 abstract static class AbstractPerson implements Person { 93 } 94 95 static class PersonImpl extends AbstractPerson { 96 public String name; 97 98 PersonImpl(String name) { 99 this.name = name; 100 } 101 102 @Override 103 public String getName() { 104 return name; 105 } 106 } 107 108 static class TenantImpl extends AbstractPerson implements Tenant { 109 public int id; 110 111 TenantImpl(int id) { 112 this.id = id; 113 } 114 115 @Override 116 public String getAddress() { 117 return String.valueOf(id); 118 } 119 } 120 }