1 /* 2 * Copyright (C) 2024 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 import java.lang.invoke.MethodHandle; 18 19 import annotations.ConstantMethodHandle; 20 21 public class InvokeInstance { 22 23 private int instanceField; 24 unreachable()25 private static void unreachable() { 26 throw new AssertionError("unreachable!"); 27 } 28 29 @ConstantMethodHandle( 30 kind = ConstantMethodHandle.INVOKE_VIRTUAL, 31 owner = "InvokeInstance", 32 fieldOrMethodName = "unreachable", 33 descriptor = "()V") forStaticMethod()34 private static MethodHandle forStaticMethod() { 35 unreachable(); 36 return null; 37 } 38 39 @ConstantMethodHandle( 40 kind = ConstantMethodHandle.INVOKE_VIRTUAL, 41 owner = "java/util/List", 42 fieldOrMethodName = "size", 43 descriptor = "()I") forInterfaceMethod()44 private static MethodHandle forInterfaceMethod() { 45 unreachable(); 46 return null; 47 } 48 49 @ConstantMethodHandle( 50 kind = ConstantMethodHandle.INVOKE_VIRTUAL, 51 owner = "Main", 52 fieldOrMethodName = "instanceMethod", 53 descriptor = "()V") inaccessibleInstanceMethod()54 private static MethodHandle inaccessibleInstanceMethod() { 55 unreachable(); 56 return null; 57 } 58 59 @ConstantMethodHandle( 60 kind = ConstantMethodHandle.INVOKE_VIRTUAL, 61 owner = "Main", 62 fieldOrMethodName = "staticMethod", 63 descriptor = "()V") inaccessibleStaticMethod()64 private static MethodHandle inaccessibleStaticMethod() { 65 unreachable(); 66 return null; 67 } 68 runTests()69 public static void runTests() { 70 try { 71 forStaticMethod(); 72 unreachable(); 73 } catch (IncompatibleClassChangeError expected) {} 74 75 try { 76 forInterfaceMethod(); 77 unreachable(); 78 } catch (IncompatibleClassChangeError expected) {} 79 80 try { 81 InvokeInstanceForConstructor.runTests(); 82 unreachable(); 83 } catch (IncompatibleClassChangeError | ClassFormatError expected) {} 84 85 try { 86 InvokeInstanceForClassInitializer.runTests(); 87 unreachable(); 88 } catch (IncompatibleClassChangeError | ClassFormatError expected) {} 89 90 try { 91 inaccessibleInstanceMethod(); 92 unreachable(); 93 } catch (IncompatibleClassChangeError expected) {} 94 95 try { 96 inaccessibleStaticMethod(); 97 unreachable(); 98 } catch (IncompatibleClassChangeError expected) {} 99 } 100 101 } 102