1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 public class Main { 18 public static void main(String[] args) { 19 // The following is a simple static field getter that can be inlined, referenced 20 // through a subclass with the declaring class having no TypeId in current DexFile. 21 // When we inline this getter, we're left with HLoadClass+HClinitCheck which cannot 22 // be merged back to the InvokeStaticOrDirect for implicit class init check. 23 // The declaring class is in the boot image, so the LoadClass can load it using the 24 // .data.bimg.rel.ro section. However, the ClinitCheck entrypoint was previously 25 // taking a type index of the declaring class and since we did not have a valid 26 // TypeId in the current DexFile, we erroneously provided the type index from the 27 // declaring DexFile and that caused a crash. This was fixed by changing the 28 // ClinitCheck entrypoint to take the Class reference from LoadClass. 29 int dummy = MyTimeZone.getDefaultTimeZoneType(); 30 } 31 } 32
