Reproduce invalid value propagation when class inherits from annotation
Bug: b/445911487
Change-Id: Ib774034a8b90e991bf7e24d6e94ca43dff4da94f
diff --git a/src/test/java/com/android/tools/r8/classmerging/vertical/AnnotationToNonAnnotationClassMergingTest.java b/src/test/java/com/android/tools/r8/classmerging/vertical/AnnotationToNonAnnotationClassMergingTest.java
new file mode 100644
index 0000000..c551b85
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/classmerging/vertical/AnnotationToNonAnnotationClassMergingTest.java
@@ -0,0 +1,84 @@
+// Copyright (c) 2025, 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.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import java.lang.annotation.Annotation;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+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 AnnotationToNonAnnotationClassMergingTest 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)
+ .addInnerClasses(getClass())
+ .run(parameters.getRuntime(), Main.class)
+ .assertSuccessWithOutputLines("Hello, world!");
+ }
+
+ @Test
+ public void testR8() throws Exception {
+ testForR8(parameters)
+ .addInnerClasses(getClass())
+ .addKeepClassAndMembersRules(Main.class)
+ .addKeepRuntimeVisibleAnnotations()
+ .compile()
+ .run(parameters.getRuntime(), Main.class)
+ // TODO(b/445911487): Should succeed with "Hello, world!".
+ .assertSuccessWithOutputLines(", world!, world!");
+ }
+
+ @I("Hello")
+ static class Main {
+
+ public static void main(String[] args) {
+ I[] is = new I[] {Main.class.getAnnotation(I.class), new A()};
+ print(is);
+ }
+
+ static void print(I[] is) {
+ for (I i : is) {
+ System.out.print(i.value());
+ }
+ System.out.println();
+ }
+ }
+
+ @Retention(RetentionPolicy.RUNTIME)
+ @interface I {
+
+ String value();
+ }
+
+ static class A implements I {
+
+ @Override
+ public Class<? extends Annotation> annotationType() {
+ return A.class;
+ }
+
+ @Override
+ public String value() {
+ return ", world!";
+ }
+ }
+}
