Parcelable: newArray() result type should be Object[] (KT-20717)

plugins/android-extensions/android-extensions-compiler/src/org/jetbrains/kotlin/android/parcel/ParcelableCodegenExtension.kt

@@ -296,7 +296,7 @@ open class ParcelableCodegenExtension : ExpressionCodegenExtension {
         val parcelableAsmType = codegen.typeMapper.mapType(parcelableClass)
 
         createMethod(creatorClass, NEW_ARRAY,
-                builtIns.getArrayType(Variance.INVARIANT, parcelableClass.defaultType),
+                builtIns.getArrayType(Variance.INVARIANT, builtIns.anyType),
                 "size" to builtIns.intType
         ).write(codegen) {
             if (parcelerObject != null) {
@@ -315,8 +315,8 @@ open class ParcelableCodegenExtension : ExpressionCodegenExtension {
 
                     v.getstatic(containerAsmType.internalName, companionFieldName, companionAsmType.descriptor)
                     v.load(1, Type.INT_TYPE)
-                    v.invokevirtual(companionAsmType.internalName, "newArray", "(I)[${containerAsmType.descriptor}", false)
-                    v.areturn(Type.getType("[L$parcelableAsmType;"))
+                    v.invokevirtual(companionAsmType.internalName, "newArray", "(I)[Ljava/lang/Object;", false)
+                    v.areturn(Type.getType("[Ljava/lang/Object;"))
 
                     return@write
                 }

plugins/android-extensions/android-extensions-compiler/test/org/jetbrains/android/parcel/AbstractParcelBoxTest.kt

@@ -155,7 +155,7 @@ abstract class AbstractParcelBoxTest : CodegenTestCase() {
 
             process.waitFor(3, TimeUnit.MINUTES)
             if (process.exitValue() != 0) {
-                throw AssertionError(classFileFactory.createText())
+                throw AssertionError("Process exited with exit code ${process.exitValue()} \n" + classFileFactory.createText())
             }
         } finally {
             if (!dirForTestClasses.deleteRecursively()) {

plugins/android-extensions/android-extensions-compiler/test/org/jetbrains/android/parcel/ParcelBoxTest.kt

@@ -53,6 +53,7 @@ class ParcelBoxTest : AbstractParcelBoxTest() {
     fun testCustomSerializerSimple() = doTest("customSerializerSimple")
     fun testCustomSerializerWriteWith() = doTest("customSerializerWriteWith")
     fun testCustomSerializerBoxing() = doTest("customSerializerBoxing")
+    fun testKt20717() = doTest("kt20717")
 }
 
 class ParcelBoxTestWithSerializableLikeExtension : AbstractParcelBoxTest() {

plugins/android-extensions/android-extensions-compiler/testData/parcel/box/kt20717.kt

@@ -0,0 +1,30 @@
+// WITH_RUNTIME
+
+@file:JvmName("TestKt")
+package test
+
+import kotlinx.android.parcel.*
+import android.os.Parcel
+import android.os.Parcelable
+
+fun box() = doTest { creator ->
+    assert(creator.newArray(5) != null)
+}
+
+fun doTest(work: (Parcelable.Creator<DummyParcelable>) -> Unit): String {
+    val dummy = DummyParcelable(42)
+
+    val clazz = dummy.javaClass
+    val field = clazz.getDeclaredField("CREATOR")
+    val creator = field.get(dummy) as Parcelable.Creator<DummyParcelable>
+
+    val parcel = Parcel.obtain()
+    dummy.writeToParcel(parcel, 0)
+    parcel.setDataPosition(0)
+
+    work(creator)
+    return "OK"
+}
+
+@Parcelize
+data class DummyParcelable(val int: Int): Parcelable

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/IBinderIInterface.txt

@@ -47,7 +47,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
         LABEL (L4)
     }
 
-    public final User[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class User : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/customDescribeContents.txt

@@ -3,7 +3,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final User[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class User : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/customParcelablesDifferentModule.txt

@@ -18,7 +18,7 @@ public final class test/Foo$Creator : java/lang/Object, android/os/Parcelable$Cr
         LABEL (L1)
     }
 
-    public final test.Foo[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class test/Foo : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/customParcelablesSameModule.txt

@@ -121,7 +121,7 @@ public final class test/Foo$Creator : java/lang/Object, android/os/Parcelable$Cr
         LABEL (L1)
     }
 
-    public final test.Foo[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class test/Foo : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/customSimple.txt

@@ -48,7 +48,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
         LABEL (L1)
     }
 
-    public final User[] newArray(int p0) {
+    public final java.lang.Object[] newArray(int p0) {
         LABEL (L0)
           ILOAD (1)
           ANEWARRAY

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/customSimpleWithNewArray.txt

@@ -36,11 +36,11 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final User[] newArray(int p0) {
+    public final java.lang.Object[] newArray(int p0) {
         LABEL (L0)
           GETSTATIC (Companion, LUser$Companion;)
           ILOAD (1)
-          INVOKEVIRTUAL (User$Companion, newArray, (I)[LUser;)
+          INVOKEVIRTUAL (User$Companion, newArray, (I)[Ljava/lang/Object;)
           ARETURN
         LABEL (L1)
     }

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/describeContentsFromSuperType.txt

@@ -15,7 +15,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final User[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class User : AbstractUser {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/duplicatingClinit.txt

@@ -15,7 +15,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final User[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class User : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/listInsideList.txt

@@ -3,7 +3,7 @@ public final class Test$Creator : java/lang/Object, android/os/Parcelable$Creato
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final Test[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class Test : java/lang/Object {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/nullableNotNullSize.txt

@@ -3,7 +3,7 @@ public final class TestNotNull$Creator : java/lang/Object, android/os/Parcelable
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final TestNotNull[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class TestNotNull : java/lang/Object {
@@ -38,7 +38,7 @@ public final class TestNullable$Creator : java/lang/Object, android/os/Parcelabl
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final TestNullable[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class TestNullable : java/lang/Object {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/parcelable.txt

@@ -17,7 +17,7 @@ public final class test/Foo$Creator : java/lang/Object, android/os/Parcelable$Cr
         LABEL (L1)
     }
 
-    public final test.Foo[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class test/Foo : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/serializable.txt

@@ -31,7 +31,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
         LABEL (L1)
     }
 
-    public final User[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class User : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/simple.txt

@@ -25,7 +25,7 @@ public final class User$Creator : java/lang/Object, android/os/Parcelable$Creato
             in: Landroid/os/Parcel;
     }
 
-    public final User[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class User : java/lang/Object, android/os/Parcelable {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/simpleList.txt

@@ -3,7 +3,7 @@ public final class Test$Creator : java/lang/Object, android/os/Parcelable$Creato
 
     public final java.lang.Object createFromParcel(android.os.Parcel p0)
 
-    public final Test[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class Test : java/lang/Object {

plugins/android-extensions/android-extensions-compiler/testData/parcel/codegen/size.txt

@@ -25,7 +25,7 @@ public final class Test$Creator : java/lang/Object, android/os/Parcelable$Creato
         LABEL (L4)
     }
 
-    public final Test[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class Test : java/lang/Object, android/os/Parcelable {
@@ -115,7 +115,7 @@ public final class TestF$Creator : java/lang/Object, android/os/Parcelable$Creat
         LABEL (L4)
     }
 
-    public final TestF[] newArray(int p0)
+    public final java.lang.Object[] newArray(int p0)
 }
 
 public final class TestF : java/lang/Object, android/os/Parcelable {