Fix java.lang.Void.TYPE (void.class) initialization.
Do not rely on the DexCache resolved types now that entries
can be evicted.
Test: 157-void-class
Test: testrunner.py --host
Bug: 35652776
Bug: 30627598
Change-Id: Ic384174ae1849072568dd6d2ff9cc60d7f7f1880
diff --git a/test/157-void-class/src/Main.java b/test/157-void-class/src/Main.java
new file mode 100644
index 0000000..322b705
--- /dev/null
+++ b/test/157-void-class/src/Main.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+import libcore.util.EmptyArray;
+
+public class Main {
+ public static void main(String[] args) {
+ try {
+ // Check if we're running dalvik or RI.
+ Class<?> class_loader_class = Class.forName("dalvik.system.PathClassLoader");
+ System.loadLibrary(args[0]);
+ } catch (ClassNotFoundException e) {
+ usingRI = true;
+ // Add expected JNI_OnLoad log line to match expected.txt.
+ System.out.println("JNI_OnLoad called");
+ }
+ try {
+ // Initialize all classes needed for old java.lang.Void.TYPE initialization.
+ Runnable.class.getMethod("run", EmptyArray.CLASS).getReturnType();
+ } catch (Exception e) {
+ throw new Error(e);
+ }
+ // Clear the resolved types of the ojluni dex file to make sure there is no entry
+ // for "V", i.e. void.
+ clearResolvedTypes(Integer.class);
+ // With java.lang.Void being compile-time verified but uninitialized, initialize
+ // it now. Previously, this would indirectly initialize TYPE with the current,
+ // i.e. zero-initialized, value of TYPE. The only thing that could prevent the
+ // series of calls leading to this was a cache hit in Class.getDexCacheType()
+ // which we have prevented by clearing the cache above.
+ Class<?> voidClass = void.class;
+ System.out.println("void.class = " + voidClass);
+ }
+
+ public static void clearResolvedTypes(Class<?> c) {
+ if (!usingRI) {
+ nativeClearResolvedTypes(c);
+ }
+ }
+
+ public static native void nativeClearResolvedTypes(Class<?> c);
+
+ static boolean usingRI = false;
+}