Reproduce AbstractMethodError due to collision with overrides
Bug: b/316345446
Change-Id: I41660fd9b0adab0474dacb67393eabbad433a936
diff --git a/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerCollisionWithOverridesTest.java b/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerCollisionWithOverridesTest.java
new file mode 100644
index 0000000..663363a
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerCollisionWithOverridesTest.java
@@ -0,0 +1,105 @@
+// Copyright (c) 2023, 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.NeverClassInline;
+import com.android.tools.r8.NeverInline;
+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 VerticalClassMergerCollisionWithOverridesTest extends TestBase {
+
+ @Parameter(0)
+ public TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ @Test
+ public void testJvm() throws Exception {
+ parameters.assumeJvmTestParameters();
+ testForJvm(parameters)
+ .addProgramClasses(A.class, B.class, Main.class)
+ .addProgramClassFileData(getTransformedClass())
+ .run(parameters.getRuntime(), Main.class)
+ .assertSuccessWithOutputLines("C C.m()", "B B.m()");
+ }
+
+ @Test
+ public void testR8() throws Exception {
+ testForR8(parameters.getBackend())
+ .addProgramClasses(A.class, B.class, Main.class)
+ .addProgramClassFileData(getTransformedClass())
+ .addKeepMainRule(Main.class)
+ .addVerticallyMergedClassesInspector(
+ inspector -> inspector.assertMergedIntoSubtype(A.class))
+ .enableInliningAnnotations()
+ .enableNeverClassInliningAnnotations()
+ .setMinApi(parameters)
+ .compile()
+ .run(parameters.getRuntime(), Main.class)
+ .assertFailureWithErrorThatThrows(AbstractMethodError.class);
+ }
+
+ private static byte[] getTransformedClass() throws Exception {
+ return transformer(C.class)
+ .removeMethods(
+ (access, name, descriptor, signature, exceptions) ->
+ name.equals("m") && descriptor.equals("()" + descriptor(B.class)))
+ .transform();
+ }
+
+ static class Main {
+
+ public static void main(String[] args) {
+ C c = new C();
+ c.callOnA();
+ c.callOnB();
+ }
+ }
+
+ abstract static class A {
+
+ abstract A m();
+
+ A callOnA() {
+ return m();
+ }
+ }
+
+ abstract static class B extends A {
+
+ @NeverInline
+ B m() {
+ System.out.println("B B.m()");
+ return this;
+ }
+
+ B callOnB() {
+ return m();
+ }
+ }
+
+ @NeverClassInline
+ static class C extends B {
+
+ @NeverInline
+ @Override
+ C m() {
+ System.out.println("C C.m()");
+ return this;
+ }
+
+ // DELETED BY TRANSFORMER: synthetic bridge B m() { ...}
+ }
+}
