Add test and fix for abstract class implementing interface

Bug: 136180822
Change-Id: I94e8bc7ba8384c35d9a930bb82252219ed327b32
diff --git a/src/main/java/com/android/tools/r8/naming/ProguardMapMinifier.java b/src/main/java/com/android/tools/r8/naming/ProguardMapMinifier.java
index bca6f1f..e25d81e 100644
--- a/src/main/java/com/android/tools/r8/naming/ProguardMapMinifier.java
+++ b/src/main/java/com/android/tools/r8/naming/ProguardMapMinifier.java
@@ -208,18 +208,23 @@
                   .dexItemFactory()
                   .createMethod(type, parentReference.proto, parentReference.name);
           addMemberNaming(
-              key, parentReferenceOnCurrentType, parentMembers, additionalMethodNamings);
+              parentReferenceOnCurrentType, parentMembers.get(key), additionalMethodNamings);
         } else {
           DexField parentReference = key.asDexField();
           DexField parentReferenceOnCurrentType =
               appView
                   .dexItemFactory()
                   .createField(type, parentReference.type, parentReference.name);
-          addMemberNaming(key, parentReferenceOnCurrentType, parentMembers, additionalFieldNamings);
+          addMemberNaming(
+              parentReferenceOnCurrentType, parentMembers.get(key), additionalFieldNamings);
         }
       }
     }
 
+    // We do not visit interfaces, but their members can also be targeted on implementing abstract
+    // classes, so we have to build their names up as well.
+    addNonPrivateInterfaceMappings(dexClass, nonPrivateMembers);
+
     if (nonPrivateMembers.size() > 0) {
       buildUpNames.addLast(nonPrivateMembers);
       appView
@@ -233,16 +238,40 @@
     }
   }
 
+  private void addNonPrivateInterfaceMappings(
+      DexClass dexClass, Map<DexReference, MemberNaming> nonPrivateMembers) {
+    if (dexClass != null && dexClass.isAbstract()) {
+      for (DexType value : dexClass.interfaces.values) {
+        ClassNamingForMapApplier interfaceNaming = seedMapper.getClassNaming(value);
+        if (interfaceNaming == null) {
+          continue;
+        }
+        interfaceNaming.forAllMemberNaming(
+            memberNaming -> {
+              Signature signature = memberNaming.getOriginalSignature();
+              assert !signature.isQualified();
+              if (signature instanceof MethodSignature) {
+                DexMethod member =
+                    ((MethodSignature) signature)
+                        .toDexMethod(appView.dexItemFactory(), dexClass.type);
+                addMemberNaming(member, memberNaming, additionalMethodNamings);
+              } else {
+                DexField member =
+                    ((FieldSignature) signature)
+                        .toDexField(appView.dexItemFactory(), dexClass.type);
+                addMemberNaming(member, memberNaming, additionalFieldNamings);
+              }
+            });
+      }
+    }
+  }
+
   private <T extends DexReference> void addMemberNaming(
-      DexReference key,
-      T member,
-      Map<DexReference, MemberNaming> parentMembers,
-      Map<T, DexString> additionalMemberNamings) {
+      T member, MemberNaming memberNaming, Map<T, DexString> additionalMemberNamings) {
     // We might have overridden a naming in the direct class namings above.
     if (!memberNames.containsKey(member)) {
-      DexString renamedName =
-          appView.dexItemFactory().createString(parentMembers.get(key).getRenamedName());
-      memberNames.put(member, parentMembers.get(key));
+      DexString renamedName = appView.dexItemFactory().createString(memberNaming.getRenamedName());
+      memberNames.put(member, memberNaming);
       additionalMemberNamings.put(member, renamedName);
     }
   }
diff --git a/src/test/java/com/android/tools/r8/naming/applymapping/ApplyMappingInterfaceInvokeTest.java b/src/test/java/com/android/tools/r8/naming/applymapping/ApplyMappingInterfaceInvokeTest.java
new file mode 100644
index 0000000..a1ef87f
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/naming/applymapping/ApplyMappingInterfaceInvokeTest.java
@@ -0,0 +1,89 @@
+// Copyright (c) 2019, 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.naming.applymapping;
+
+import com.android.tools.r8.CompilationFailedException;
+import com.android.tools.r8.R8TestCompileResult;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import java.io.IOException;
+import java.util.concurrent.ExecutionException;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class ApplyMappingInterfaceInvokeTest extends TestBase {
+
+  public interface I {
+    void foo();
+  }
+
+  // Keep this class to test A.foo();
+  public abstract static class A implements I {}
+
+  public static class B extends A {
+
+    @Override
+    public void foo() {
+      System.out.println("Hello World!");
+    }
+  }
+
+  // Keep this class to test C.foo();
+  public static class C extends B {}
+
+  public static class TestApp {
+
+    public static void main(String[] args) {
+      testA(new B());
+      testC(new C());
+    }
+
+    public static void testA(A a) {
+      a.foo();
+    }
+
+    public static void testC(C c) {
+      c.foo();
+    }
+  }
+
+  private final TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimes().build();
+  }
+
+  public ApplyMappingInterfaceInvokeTest(TestParameters parameters) {
+    this.parameters = parameters;
+  }
+
+  @Test
+  public void testInvokeVirtual()
+      throws IOException, CompilationFailedException, ExecutionException {
+    Class<?>[] classPathClasses = {I.class, A.class, B.class, C.class};
+    R8TestCompileResult libraryResult =
+        testForR8(parameters.getBackend())
+            .addProgramClasses(classPathClasses)
+            .addKeepAllClassesRuleWithAllowObfuscation()
+            .setMinApi(parameters.getRuntime())
+            .compile();
+    testForR8(parameters.getBackend())
+        .addClasspathClasses(classPathClasses)
+        .addProgramClasses(TestApp.class)
+        .noMinification()
+        .noTreeShaking()
+        .addApplyMapping(libraryResult.getProguardMap())
+        .setMinApi(parameters.getRuntime())
+        .compile()
+        .addRunClasspathFiles(libraryResult.writeToZip())
+        .run(parameters.getRuntime(), TestApp.class)
+        .assertSuccessWithOutputLines("Hello World!", "Hello World!");
+  }
+}