| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.core.test; |
| |
| import jdk.vm.ci.meta.Assumptions.AssumptionResult; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| |
| import org.junit.Assert; |
| import org.junit.Ignore; |
| import org.junit.Test; |
| |
| public class FindUniqueConcreteMethodBugTest extends GraalCompilerTest { |
| |
| // To cause a C1 or C2 crash: -DFindUniqueConcreteMethodBugTest.ITERATIONS=10000 |
| private static final int ITERATIONS = Integer.getInteger("FindUniqueConcreteMethodBugTest.ITERATIONS", 100); |
| |
| /** |
| * Executing {@link ResolvedJavaType#findUniqueConcreteMethod(ResolvedJavaMethod)} for the |
| * method {@link Person#getName()} on the type {@link AbstractPerson} should return null as both |
| * {@link PersonImpl} and {@link TenantImpl} provide implementations (namely |
| * {@link PersonImpl#getName()} and {@link Tenant#getName()}). |
| */ |
| @Test |
| @Ignore("fix HotSpotResolvedObjectTypeImpl.findUniqueConcreteMethod") |
| public void test() throws NoSuchMethodException { |
| ResolvedJavaMethod ifaceMethod = getMetaAccess().lookupJavaMethod(Person.class.getDeclaredMethod("getName")); |
| |
| PersonImpl person = new PersonImpl("maya"); |
| TenantImpl tenant = new TenantImpl(0xdeadbeef); |
| |
| // Ensure the relevant methods are linked |
| person.getName(); |
| tenant.getName(); |
| |
| for (int i = 0; i < ITERATIONS; i++) { |
| getLabelLength(person); |
| getLabelLength(tenant); |
| } |
| |
| // Until HotSpotResolvedObjectTypeImpl.findUniqueConcreteMethod is fixed, |
| // this causes a VM crash as getLabelLength() directly invokes PersonImpl.getName(). |
| test("getLabelLength", tenant); |
| |
| ResolvedJavaMethod expected = null; |
| AssumptionResult<ResolvedJavaMethod> actual = getMetaAccess().lookupJavaType(AbstractPerson.class).findUniqueConcreteMethod(ifaceMethod); |
| Assert.assertEquals(expected, actual.getResult()); |
| |
| } |
| |
| public int getLabelLength(AbstractPerson person) { |
| return person.getName().length(); |
| } |
| |
| interface Person { |
| String getName(); |
| |
| default int getId() { |
| return -1; |
| } |
| } |
| |
| interface Tenant extends Person { |
| @Override |
| default String getName() { |
| return getAddress(); |
| } |
| |
| String getAddress(); |
| } |
| |
| abstract static class AbstractPerson implements Person { |
| } |
| |
| static class PersonImpl extends AbstractPerson { |
| public String name; |
| |
| PersonImpl(String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| } |
| |
| static class TenantImpl extends AbstractPerson implements Tenant { |
| public int id; |
| |
| TenantImpl(int id) { |
| this.id = id; |
| } |
| |
| @Override |
| public String getAddress() { |
| return String.valueOf(id); |
| } |
| } |
| } |