| // Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.classmerging.vertical; |
| |
| import com.android.tools.r8.KeepUnusedArguments; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NeverPropagateValue; |
| import com.android.tools.r8.NoParameterTypeStrengthening; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class ConflictWasDetectedTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .addHorizontallyMergedClassesInspector( |
| inspector -> |
| inspector |
| .assertIsCompleteMergeGroup( |
| ClassWithConflictingMethod.class, OtherClassWithConflictingMethod.class) |
| .assertNoOtherClassesMerged()) |
| .addVerticallyMergedClassesInspector( |
| inspector -> inspector.assertMergedIntoSubtype(ConflictingInterface.class)) |
| .enableInliningAnnotations() |
| .enableMemberValuePropagationAnnotations() |
| .enableNoParameterTypeStrengtheningAnnotations() |
| .enableUnusedArgumentAnnotations() |
| .setMinApi(parameters) |
| .compile() |
| .run(parameters.getRuntime(), Main.class); |
| } |
| |
| static class Main { |
| |
| public static void main(String... args) { |
| ConflictingInterfaceImpl impl = new ConflictingInterfaceImpl(); |
| callMethodOnIface(impl); |
| |
| // Ensure that the instantiations are not dead code eliminated. |
| escape(impl); |
| } |
| |
| @NeverInline |
| @NoParameterTypeStrengthening |
| private static void callMethodOnIface(ConflictingInterface iface) { |
| System.out.println(iface.method()); |
| System.out.println(ClassWithConflictingMethod.conflict(null)); |
| System.out.println(OtherClassWithConflictingMethod.conflict(null)); |
| } |
| |
| @NeverInline |
| private static void escape(Object o) { |
| if (System.currentTimeMillis() < 0) { |
| System.out.println(o); |
| } |
| } |
| } |
| |
| public interface ConflictingInterface { |
| |
| String method(); |
| } |
| |
| public static class ConflictingInterfaceImpl implements ConflictingInterface { |
| |
| @Override |
| public String method() { |
| return "ConflictingInterfaceImpl::method"; |
| } |
| } |
| |
| public static class ClassWithConflictingMethod { |
| |
| @KeepUnusedArguments |
| @NeverInline |
| @NeverPropagateValue |
| public static int conflict(ConflictingInterface item) { |
| return 123; |
| } |
| } |
| |
| public static class OtherClassWithConflictingMethod { |
| |
| @KeepUnusedArguments |
| @NeverInline |
| @NeverPropagateValue |
| public static int conflict(ConflictingInterfaceImpl item) { |
| return 321; |
| } |
| } |
| } |