/* * Copyright (C) 2018 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { public static void main(String[] args) { // The following is a simple static field getter that can be inlined, referenced // through a subclass with the declaring class having no TypeId in current DexFile. // When we inline this getter, we're left with HLoadClass+HClinitCheck which cannot // be merged back to the InvokeStaticOrDirect for implicit class init check. // The declaring class is in the boot image, so the LoadClass can load it using the // .data.bimg.rel.ro section. However, the ClinitCheck entrypoint was previously // taking a type index of the declaring class and since we did not have a valid // TypeId in the current DexFile, we erroneously provided the type index from the // declaring DexFile and that caused a crash. This was fixed by changing the // ClinitCheck entrypoint to take the Class reference from LoadClass. int placeholder = MyTimeZone.getDefaultTimeZoneType(); } }