--- /dev/null Tue Feb 25 00:08:03 2014
+++ new/test/java/lang/annotation/AnnotationType/AnnotationTypeRuntimeAssumptionTest.java Tue Feb 25 00:08:01 2014
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 7122142
+ * @summary Test consistent parsing of ex-RUNTIME annotations that
+ * were changed and separately compiled to have CLASS retention
+ */
+
+import sun.misc.IOUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.annotation.Annotation;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import static java.lang.annotation.RetentionPolicy.CLASS;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+/**
+ * This test simulates a situation where there are two mutually recursive
+ * {@link RetentionPolicy#RUNTIME RUNTIME} annotations {@link AnnA_v1 AnnA_v1}
+ * and {@link AnnB AnnB} and then the first is changed to have
+ * {@link RetentionPolicy#CLASS CLASS} retention and separately compiled.
+ * When {@link AnnA_v1 AnnA_v1} annotation is looked-up on {@link AnnB AnnB}
+ * it still appears to have {@link RetentionPolicy#RUNTIME RUNTIME} retention.
+ */
+public class AnnotationTypeRuntimeAssumptionTest {
+
+ @Retention(RUNTIME)
+ @AnnB
+ public @interface AnnA_v1 {
+ }
+
+ // An alternative version of AnnA_v1 with CLASS retention instead.
+ // Used to simulate separate compilation (see AltClassLoader below).
+ @Retention(CLASS)
+ @AnnB
+ public @interface AnnA_v2 {
+ }
+
+ @Retention(RUNTIME)
+ @AnnA_v1
+ public @interface AnnB {
+ }
+
+ @AnnA_v1
+ public static class TestTask implements Runnable {
+ @Override
+ public void run() {
+ AnnA_v1 ann1 = getDeclaredAnnotation(TestTask.class, AnnA_v1.class);
+ if (ann1 != null) {
+ throw new IllegalStateException(
+ "@" + ann1.annotationType().getSimpleName() +
+ " found on: " + TestTask.class.getName() +
+ " should not be visible at runtime");
+ }
+ AnnA_v1 ann2 = getDeclaredAnnotation(AnnB.class, AnnA_v1.class);
+ if (ann2 != null) {
+ throw new IllegalStateException(
+ "@" + ann2.annotationType().getSimpleName() +
+ " found on: " + AnnB.class.getName() +
+ " should not be visible at runtime");
+ }
+ }
+
+ private static A getDeclaredAnnotation(Class> clazz, Class annotationClass) {
+ for (Annotation ann : clazz.getDeclaredAnnotations()) {
+ if (ann.annotationType() == annotationClass) {
+ return annotationClass.cast(ann);
+ }
+ }
+ return null;
+ }
+ }
+
+ public static void main(String[] args) throws Exception {
+ ClassLoader altLoader = new AltClassLoader(
+ AnnotationTypeRuntimeAssumptionTest.class.getClassLoader());
+
+ Runnable altTask = (Runnable) Class.forName(
+ TestTask.class.getName(),
+ true,
+ altLoader).newInstance();
+
+ altTask.run();
+ }
+
+ /**
+ * A ClassLoader implementation that loads alternative implementations of
+ * classes. If class name ends with "_v1" it locates instead a class with
+ * name ending with "_v2" and loads that class instead.
+ */
+ static class AltClassLoader extends ClassLoader {
+ AltClassLoader(ClassLoader parent) {
+ super(parent);
+ }
+
+ @Override
+ protected Class> loadClass(String name, boolean resolve)
+ throws ClassNotFoundException {
+ if (name.indexOf('.') < 0) { // root package is our class
+ synchronized (getClassLoadingLock(name)) {
+ // First, check if the class has already been loaded
+ Class> c = findLoadedClass(name);
+ if (c == null) {
+ c = findClass(name);
+ }
+ if (resolve) {
+ resolveClass(c);
+ }
+ return c;
+ }
+ }
+ else { // not our class
+ return super.loadClass(name, resolve);
+ }
+ }
+
+ @Override
+ protected Class> findClass(String name)
+ throws ClassNotFoundException {
+ // special class name -> replace it with alternative name
+ if (name.endsWith("_v1")) {
+ String altName = name.substring(0, name.length() - 3) + "_v2";
+ String altPath = altName.replace('.', '/').concat(".class");
+ try (InputStream is = getResourceAsStream(altPath)) {
+ if (is != null) {
+ byte[] bytes = IOUtils.readFully(is, -1, true);
+ // patch class bytes to contain original name
+ for (int i = 0; i < bytes.length - 2; i++) {
+ if (bytes[i] == '_' &&
+ bytes[i + 1] == 'v' &&
+ bytes[i + 2] == '2') {
+ bytes[i + 2] = '1';
+ }
+ }
+ return defineClass(name, bytes, 0, bytes.length);
+ }
+ else {
+ throw new ClassNotFoundException(name);
+ }
+ }
+ catch (IOException e) {
+ throw new ClassNotFoundException(name, e);
+ }
+ }
+ else { // not special class name -> just load the class
+ String path = name.replace('.', '/').concat(".class");
+ try (InputStream is = getResourceAsStream(path)) {
+ if (is != null) {
+ byte[] bytes = IOUtils.readFully(is, -1, true);
+ return defineClass(name, bytes, 0, bytes.length);
+ }
+ else {
+ throw new ClassNotFoundException(name);
+ }
+ }
+ catch (IOException e) {
+ throw new ClassNotFoundException(name, e);
+ }
+ }
+ }
+ }
+}