58 lines
2.3 KiB
Java
58 lines
2.3 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import libcore.util.EmptyArray;
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public class Main {
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public static void main(String[] args) {
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try {
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// Check if we're running dalvik or RI.
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Class<?> class_loader_class = Class.forName("dalvik.system.PathClassLoader");
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System.loadLibrary(args[0]);
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} catch (ClassNotFoundException e) {
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usingRI = true;
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// Add expected JNI_OnLoad log line to match expected-stdout.txt.
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System.out.println("JNI_OnLoad called");
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}
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try {
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// Initialize all classes needed for old java.lang.Void.TYPE initialization.
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Runnable.class.getMethod("run", EmptyArray.CLASS).getReturnType();
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} catch (Exception e) {
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throw new Error(e);
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}
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// Clear the resolved types of the ojluni dex file to make sure there is no entry
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// for "V", i.e. void.
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clearResolvedTypes(Integer.class);
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// With java.lang.Void being compile-time verified but uninitialized, initialize
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// it now. Previously, this would indirectly initialize TYPE with the current,
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// i.e. zero-initialized, value of TYPE. The only thing that could prevent the
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// series of calls leading to this was a cache hit in Class.getDexCacheType()
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// which we have prevented by clearing the cache above.
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Class<?> voidClass = void.class;
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System.out.println("void.class = " + voidClass);
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}
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public static void clearResolvedTypes(Class<?> c) {
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if (!usingRI) {
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nativeClearResolvedTypes(c);
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}
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}
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public static native void nativeClearResolvedTypes(Class<?> c);
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static boolean usingRI = false;
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}
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