drchase@5800: /*
drchase@5800:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
drchase@5800:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
drchase@5800:  *
drchase@5800:  * This code is free software; you can redistribute it and/or modify it
drchase@5800:  * under the terms of the GNU General Public License version 2 only, as
drchase@5800:  * published by the Free Software Foundation.
drchase@5800:  *
drchase@5800:  * This code is distributed in the hope that it will be useful, but WITHOUT
drchase@5800:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
drchase@5800:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
drchase@5800:  * version 2 for more details (a copy is included in the LICENSE file that
drchase@5800:  * accompanied this code).
drchase@5800:  *
drchase@5800:  * You should have received a copy of the GNU General Public License version
drchase@5800:  * 2 along with this work; if not, write to the Free Software Foundation,
drchase@5800:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
drchase@5800:  *
drchase@5800:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
drchase@5800:  * or visit www.oracle.com if you need additional information or have any
drchase@5800:  * questions.
drchase@5800:  *
drchase@5800:  */
drchase@5800: import java.lang.reflect.InvocationTargetException;
drchase@6134: import java.lang.reflect.Method;
drchase@6134: import java.util.ArrayList;
drchase@6134: import java.util.List;
drchase@5800: import jdk.internal.org.objectweb.asm.ClassWriter;
drchase@5800: import jdk.internal.org.objectweb.asm.Handle;
drchase@5800: import jdk.internal.org.objectweb.asm.MethodVisitor;
drchase@5800: import jdk.internal.org.objectweb.asm.Opcodes;
drchase@6134: import p.Dok;
drchase@5800: 
drchase@5800: /**
drchase@6134:  * @test @bug 8025260 8016839
drchase@6134:  * @summary Ensure that AbstractMethodError and IllegalAccessError are thrown appropriately, not NullPointerException
drchase@5800:  *
drchase@6134:  * @compile -XDignore.symbol.file TestAMEnotNPE.java ByteClassLoader.java p/C.java p/Dok.java p/E.java p/F.java p/I.java p/Tdirect.java p/Treflect.java
drchase@6134:  *
drchase@5800:  * @run main/othervm TestAMEnotNPE
drchase@6134:  * @run main/othervm -Xint TestAMEnotNPE
drchase@6134:  * @run main/othervm -Xcomp TestAMEnotNPE
drchase@5800:  */
drchase@5800: public class TestAMEnotNPE implements Opcodes {
drchase@5800: 
drchase@6134:     static boolean writeJarFiles = false;
drchase@6134:     static boolean readJarFiles = false;
drchase@6134: 
drchase@5800:     /**
drchase@6134:      * Optional command line parameter (any case-insensitive prefix of)
drchase@6134:      * "writejarfiles" or "readjarfiles".
drchase@6134:      *
drchase@6134:      * "Writejarfiles" creates a jar file for each different set of tested classes.
drchase@6134:      * "Readjarfiles" causes the classloader to use the copies of the classes
drchase@6134:      * found in the corresponding jar files.
drchase@6134:      *
drchase@6134:      * Jarfilenames look something like pD_ext_pF (p.D extends p.F)
drchase@6134:      * and qD_m_pp_imp_pI (q.D with package-private m implements p.I)
drchase@6134:      *
drchase@6134:      */
drchase@6134:     public static void main(String args[]) throws Throwable {
drchase@6134:         ArrayList<Throwable> lt = new ArrayList<Throwable>();
drchase@5800: 
drchase@6134:         if (args.length > 0) {
drchase@6134:             String a0 = args[0].toLowerCase();
drchase@6134:             if (a0.length() > 0) {
drchase@6134:                 writeJarFiles = ("writejarfiles").startsWith(a0);
drchase@6134:                 readJarFiles = ("readjarfiles").startsWith(a0);
drchase@6134:             }
drchase@6134:             if (!(writeJarFiles || readJarFiles)) {
drchase@6134:                 throw new Error("Command line parameter (if any) should be prefix of writeJarFiles or readJarFiles");
drchase@6134:             }
drchase@6134:         }
drchase@5800: 
drchase@6134:         try {
drchase@6134:             System.out.println("TRYING p.D.m PRIVATE interface-invoked as p.I.m, p.D extends p.F, p.F.m FINAL");
drchase@6134:             tryAndCheckThrown(lt, bytesForDprivateSubWhat("p/F"),
drchase@6134:                     "p.D extends p.F (p.F implements p.I, FINAL public m), private m",
drchase@6134:                     IllegalAccessError.class, "pD_ext_pF");
drchase@6134:             // We'll take either a VerifyError (pre 2013-11-30)
drchase@6134:             // or an IllegalAccessError (post 2013-11-22)
drchase@6134:         } catch (VerifyError ve) {
drchase@6134:             System.out.println("Saw expected VerifyError " + ve);
drchase@6134:         }
drchase@6134:         System.out.println();
drchase@6134: 
drchase@6134:         System.out.println("TRYING p.D.m PRIVATE interface-invoked as p.I.m, p.D extends p.E");
drchase@6134:         tryAndCheckThrown(lt, bytesForDprivateSubWhat("p/E"),
drchase@6134:                 "p.D extends p.E (p.E implements p.I, public m), private m",
drchase@6134:                 IllegalAccessError.class, "pD_ext_pE");
drchase@6134: 
drchase@6134:         System.out.println("TRYING p.D.m ABSTRACT interface-invoked as p.I.m");
drchase@6134:         tryAndCheckThrown(lt, bytesForD(),
drchase@6134:                 "D extends abstract C, no m",
drchase@6134:                 AbstractMethodError.class, "pD_ext_pC");
drchase@6134: 
drchase@6134:         System.out.println("TRYING q.D.m PACKAGE interface-invoked as p.I.m");
drchase@6134:         tryAndCheckThrown(lt, "q.D", bytesForDsomeAccess("q/D", 0),
drchase@6134:                 "q.D implements p.I, protected m", IllegalAccessError.class,
drchase@6134:                 "qD_m_pp_imp_pI");
drchase@6134: 
drchase@6134:         // Note jar file name is used in the plural-arg case.
drchase@6134:         System.out.println("TRYING p.D.m PRIVATE interface-invoked as p.I.m");
drchase@6134:         tryAndCheckThrown(lt, bytesForDsomeAccess("p/D", ACC_PRIVATE),
drchase@6134:                 "p.D implements p.I, private m",
drchase@6134:                 IllegalAccessError.class, "pD_m_pri_imp_pI");
drchase@6134: 
drchase@6134:         // Plural-arg test.
drchase@6134:         System.out.println("TRYING p.D.m PRIVATE MANY ARG interface-invoked as p.I.m");
drchase@6134:         tryAndCheckThrownMany(lt, bytesForDsomeAccess("p/D", ACC_PRIVATE),
drchase@6134:                 "p.D implements p.I, private m", IllegalAccessError.class);
drchase@6134: 
drchase@6134:         if (lt.size() > 0) {
drchase@6134:             System.out.flush();
drchase@6134:             Thread.sleep(250); // This de-interleaves output and error in Netbeans, sigh.
drchase@6134:             for (Throwable th : lt)
drchase@6134:               System.err.println(th);
drchase@6134:             throw new Error("Test failed, there were " + lt.size() + " failures listed above");
drchase@6134:         } else {
drchase@6134:             System.out.println("ALL PASS, HOORAY!");
drchase@6134:         }
drchase@6134:     }
drchase@6134: 
drchase@6134:     /**
drchase@6134:      * The bytes for D, a NOT abstract class extending abstract class C without
drchase@6134:      * supplying an implementation for abstract method m. There is a default
drchase@6134:      * method in the interface I, but it should lose to the abstract class.
drchase@6134:      *
drchase@5800:      * @return
drchase@5800:      * @throws Exception
drchase@5800:      */
drchase@5800:     public static byte[] bytesForD() throws Exception {
drchase@5800: 
drchase@6134:         ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
drchase@6134:                 | ClassWriter.COMPUTE_MAXS);
drchase@5800:         MethodVisitor mv;
drchase@5800: 
drchase@6134:         cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/D", null, "p/C", null);
drchase@5800: 
drchase@5800:         {
drchase@5800:             mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
drchase@5800:             mv.visitCode();
drchase@5800:             mv.visitVarInsn(ALOAD, 0);
drchase@6134:             mv.visitMethodInsn(INVOKESPECIAL, "p/C", "<init>", "()V");
drchase@5800:             mv.visitInsn(RETURN);
drchase@5800:             mv.visitMaxs(0, 0);
drchase@5800:             mv.visitEnd();
drchase@5800:         }
drchase@5800:         cw.visitEnd();
drchase@5800: 
drchase@5800:         return cw.toByteArray();
drchase@5800:     }
drchase@5800: 
drchase@6134:     /**
drchase@6134:      * The bytes for D, implements I, does not extend C, declares m()I with
drchase@6134:      * access method_acc.
drchase@6134:      *
drchase@6134:      * @param d_name Name of class defined
drchase@6134:      * @param method_acc Accessibility of that class's method m.
drchase@6134:      * @return
drchase@6134:      * @throws Exception
drchase@6134:      */
drchase@6134:     public static byte[] bytesForDsomeAccess(String d_name, int method_acc) throws Exception {
drchase@6134:         return bytesForSomeDsubSomethingSomeAccess(d_name, "java/lang/Object", method_acc);
drchase@6134:     }
drchase@5800: 
drchase@5800:     /**
drchase@6134:      * The bytes for D implements I, extends some class, declares m()I as
drchase@6134:      * private.
drchase@6134:      *
drchase@6134:      * Invokeinterface of I.m applied to this D should throw IllegalAccessError
drchase@6134:      *
drchase@6134:      * @param sub_what The name of the class that D will extend.
drchase@6134:      * @return
drchase@6134:      * @throws Exception
drchase@6134:      */
drchase@6134:     public static byte[] bytesForDprivateSubWhat(String sub_what) throws Exception {
drchase@6134:         return bytesForSomeDsubSomethingSomeAccess("p/D", sub_what, ACC_PRIVATE);
drchase@6134:     }
drchase@5800: 
drchase@6134:     /**
drchase@6134:      * Returns the bytes for a class with name d_name (presumably "D" in some
drchase@6134:      * package), extending some class with name sub_what, implementing p.I,
drchase@6134:      * and defining two methods m() and m(11args) with access method_acc.
drchase@6134:      *
drchase@6134:      * @param d_name      Name of class that is defined
drchase@6134:      * @param sub_what    Name of class that it extends
drchase@6134:      * @param method_acc  Accessibility of method(s) m in defined class.
drchase@6134:      * @return
drchase@6134:      * @throws Exception
drchase@6134:      */
drchase@6134:     public static byte[] bytesForSomeDsubSomethingSomeAccess
drchase@6134:             (String d_name, String sub_what, int method_acc)
drchase@6134:             throws Exception {
drchase@6134: 
drchase@6134:         ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
drchase@6134:                 | ClassWriter.COMPUTE_MAXS);
drchase@6134:         MethodVisitor mv;
drchase@6134:         String[] interfaces = {"p/I"};
drchase@6134: 
drchase@6134:         cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, d_name, null, sub_what, interfaces);
drchase@6134:         {
drchase@6134:             mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
drchase@6134:             mv.visitCode();
drchase@6134:             mv.visitVarInsn(ALOAD, 0);
drchase@6134:             mv.visitMethodInsn(INVOKESPECIAL, sub_what, "<init>", "()V");
drchase@6134:             mv.visitInsn(RETURN);
drchase@6134:             mv.visitMaxs(0, 0);
drchase@6134:             mv.visitEnd();
drchase@5800:         }
drchase@6134:         // int m() {return 3;}
drchase@6134:         {
drchase@6134:             mv = cw.visitMethod(method_acc, "m", "()I", null, null);
drchase@6134:             mv.visitCode();
drchase@6134:             mv.visitLdcInsn(new Integer(3));
drchase@6134:             mv.visitInsn(IRETURN);
drchase@6134:             mv.visitMaxs(0, 0);
drchase@6134:             mv.visitEnd();
drchase@6134:         }
drchase@6134:         // int m(11args) {return 3;}
drchase@6134:         {
drchase@6134:             mv = cw.visitMethod(method_acc, "m", "(BCSIJ"
drchase@6134:                     + "Ljava/lang/Object;"
drchase@6134:                     + "Ljava/lang/Object;"
drchase@6134:                     + "Ljava/lang/Object;"
drchase@6134:                     + "Ljava/lang/Object;"
drchase@6134:                     + "Ljava/lang/Object;"
drchase@6134:                     + "Ljava/lang/Object;"
drchase@6134:                     + ")I", null, null);
drchase@6134:             mv.visitCode();
drchase@6134:             mv.visitLdcInsn(new Integer(3));
drchase@6134:             mv.visitInsn(IRETURN);
drchase@6134:             mv.visitMaxs(0, 0);
drchase@6134:             mv.visitEnd();
drchase@6134:         }
drchase@6134:         cw.visitEnd();
drchase@6134:         return cw.toByteArray();
drchase@6134:     }
drchase@5800: 
drchase@6134:     /**
drchase@6134:      * The bytecodes for a class p/T defining a methods test() and test(11args)
drchase@6134:      * that contain an invokeExact of a particular methodHandle, I.m.
drchase@6134:      *
drchase@6134:      * Test will be passed values that may imperfectly implement I,
drchase@6134:      * and thus may in turn throw exceptions.
drchase@6134:      *
drchase@5800:      * @return
drchase@5800:      * @throws Exception
drchase@5800:      */
drchase@5800:     public static byte[] bytesForT() throws Exception {
drchase@5800: 
drchase@6134:         ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
drchase@6134:                 | ClassWriter.COMPUTE_MAXS);
drchase@5800:         MethodVisitor mv;
drchase@5800: 
drchase@6134:         cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/T", null, "java/lang/Object", null);
drchase@5800:         {
drchase@5800:             mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
drchase@5800:             mv.visitCode();
drchase@5800:             mv.visitVarInsn(ALOAD, 0);
drchase@5800:             mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
drchase@5800:             mv.visitInsn(RETURN);
drchase@6134:             mv.visitMaxs(0, 0);
drchase@5800:             mv.visitEnd();
drchase@5800:         }
drchase@6134:         // static int test(I)
drchase@5800:         {
drchase@6134:             mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;)I", null, null);
drchase@5800:             mv.visitCode();
drchase@6134:             mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "()I"));
drchase@6134:             mv.visitVarInsn(ALOAD, 0);
drchase@6134:             mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
drchase@6134:                     "invokeExact", "(Lp/I;)I");
drchase@5800:             mv.visitInsn(IRETURN);
drchase@6134:             mv.visitMaxs(0, 0);
drchase@6134:             mv.visitEnd();
drchase@6134:         }
drchase@6134:         // static int test(I,11args)
drchase@6134:         {
drchase@6134:             mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I", null, null);
drchase@6134:             mv.visitCode();
drchase@6134:             mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "(BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I"));
drchase@6134:             mv.visitVarInsn(ALOAD, 0);
drchase@6134:             mv.visitVarInsn(ILOAD, 1);
drchase@6134:             mv.visitVarInsn(ILOAD, 2);
drchase@6134:             mv.visitVarInsn(ILOAD, 3);
drchase@6134:             mv.visitVarInsn(ILOAD, 4);
drchase@6134:             mv.visitVarInsn(LLOAD, 5);
drchase@6134:             mv.visitVarInsn(ALOAD, 7);
drchase@6134:             mv.visitVarInsn(ALOAD, 8);
drchase@6134:             mv.visitVarInsn(ALOAD, 9);
drchase@6134:             mv.visitVarInsn(ALOAD, 10);
drchase@6134:             mv.visitVarInsn(ALOAD, 11);
drchase@6134:             mv.visitVarInsn(ALOAD, 12);
drchase@6134:             mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
drchase@6134:                     "invokeExact", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I");
drchase@6134:             mv.visitInsn(IRETURN);
drchase@6134:             mv.visitMaxs(0, 0);
drchase@5800:             mv.visitEnd();
drchase@5800:         }
drchase@5800:         cw.visitEnd();
drchase@5800:         return cw.toByteArray();
drchase@5800:     }
drchase@5800: 
drchase@6134:     private static void tryAndCheckThrown(
drchase@6134:             List<Throwable> lt, byte[] dBytes, String what, Class<?> expected, String jar_name)
drchase@6134:             throws Throwable {
drchase@6134:         tryAndCheckThrown(lt, "p.D", dBytes, what, expected, jar_name);
drchase@6134:     }
drchase@6134: 
drchase@6134:     private static void tryAndCheckThrown(List<Throwable> lt, String d_name, byte[] dBytes, String what, Class<?> expected, String jar_name)
drchase@6134:             throws Throwable {
drchase@6134: 
drchase@6134:         System.out.println("Methodhandle invokeExact I.m() for instance of " + what);
drchase@6134:         ByteClassLoader bcl1 = new ByteClassLoader(jar_name, readJarFiles, writeJarFiles);
drchase@5800:         try {
drchase@6134:             Class<?> d1 = bcl1.loadBytes(d_name, dBytes);
drchase@6134:             Class<?> t1 = bcl1.loadBytes("p.T", bytesForT());
drchase@6134:             invokeTest(t1, d1, expected, lt);
drchase@6134:         } finally {
drchase@6134:             // Not necessary for others -- all class files are written in this call.
drchase@6134:             // (unless the VM crashes first).
drchase@6134:             bcl1.close();
drchase@6134:         }
drchase@6134: 
drchase@6134:         System.out.println("Reflection invoke I.m() for instance of " + what);
drchase@6134:         ByteClassLoader bcl3 = new ByteClassLoader(jar_name, readJarFiles, false);
drchase@6134:         Class<?> d3 = bcl3.loadBytes(d_name, dBytes);
drchase@6134:         Class<?> t3 = bcl3.loadClass("p.Treflect");
drchase@6134:         invokeTest(t3, d3, expected, lt);
drchase@6134: 
drchase@6134:         System.out.println("Bytecode invokeInterface I.m() for instance of " + what);
drchase@6134:         ByteClassLoader bcl2 = new ByteClassLoader(jar_name, readJarFiles, false);
drchase@6134:         Class<?> d2 = bcl2.loadBytes(d_name, dBytes);
drchase@6134:         Class<?> t2 = bcl2.loadClass("p.Tdirect");
drchase@6134:         badGoodBadGood(t2, d2, expected, lt);
drchase@6134:     }
drchase@6134: 
drchase@6134:     private static void invokeTest(Class<?> t, Class<?> d, Class<?> expected, List<Throwable> lt)
drchase@6134:             throws Throwable {
drchase@6134:         try {
drchase@6134:             Method m = t.getMethod("test", p.I.class);
drchase@6134:             Object o = d.newInstance();
drchase@6134:             Object result = m.invoke(null, o);
drchase@6134:             if (expected != null) {
drchase@6134:                 System.out.println("FAIL, Expected " + expected.getName()
drchase@6134:                         + " wrapped in InvocationTargetException, but nothing was thrown");
drchase@6134:                 lt.add(new Error("Exception " + expected.getName() + " was not thrown"));
drchase@6134:             } else {
drchase@6134:                 System.out.println("PASS, saw expected return.");
drchase@6134:             }
drchase@5800:         } catch (InvocationTargetException e) {
drchase@5800:             Throwable th = e.getCause();
drchase@6134:             th.printStackTrace(System.out);
drchase@6134:             if (expected != null) {
drchase@6134:                 if (expected.isInstance(th)) {
drchase@6134:                     System.out.println("PASS, saw expected exception (" + expected.getName() + ").");
drchase@6134:                 } else {
drchase@6134:                     System.out.println("FAIL, Expected " + expected.getName()
drchase@6134:                             + " wrapped in InvocationTargetException, saw " + th);
drchase@6134:                     lt.add(th);
drchase@6134:                 }
drchase@5800:             } else {
drchase@6134:                 System.out.println("FAIL, expected no exception, saw " + th);
drchase@6134:                 lt.add(th);
drchase@5800:             }
drchase@5800:         }
drchase@6134:         System.out.println();
drchase@6134:     }
drchase@6134: 
drchase@6134:     /* Many-arg versions of above */
drchase@6134:     private static void tryAndCheckThrownMany(List<Throwable> lt, byte[] dBytes, String what, Class<?> expected)
drchase@6134:             throws Throwable {
drchase@6134: 
drchase@6134:         System.out.println("Methodhandle invokeExact I.m(11params) for instance of " + what);
drchase@6134:         ByteClassLoader bcl1 = new ByteClassLoader("p.D", readJarFiles, false);
drchase@6134:         try {
drchase@6134:             Class<?> d1 = bcl1.loadBytes("p.D", dBytes);
drchase@6134:             Class<?> t1 = bcl1.loadBytes("p.T", bytesForT());
drchase@6134:             invokeTestMany(t1, d1, expected, lt);
drchase@6134:         } finally {
drchase@6134:             bcl1.close(); // Not necessary for others -- all class files are written in this call.
drchase@6134:         }
drchase@6134: 
drchase@6134:         {
drchase@6134:             System.out.println("Bytecode invokeInterface I.m(11params) for instance of " + what);
drchase@6134:             ByteClassLoader bcl2 = new ByteClassLoader("pD_m_pri_imp_pI", readJarFiles, false);
drchase@6134:             Class<?> d2 = bcl2.loadBytes("p.D", dBytes);
drchase@6134:             Class<?> t2 = bcl2.loadClass("p.Tdirect");
drchase@6134:             badGoodBadGoodMany(t2, d2, expected, lt);
drchase@6134: 
drchase@6134:         }
drchase@6134:         {
drchase@6134:             System.out.println("Reflection invokeInterface I.m(11params) for instance of " + what);
drchase@6134:             ByteClassLoader bcl2 = new ByteClassLoader("pD_m_pri_imp_pI", readJarFiles, false);
drchase@6134:             Class<?> d2 = bcl2.loadBytes("p.D", dBytes);
drchase@6134:             Class<?> t2 = bcl2.loadClass("p.Treflect");
drchase@6134:             invokeTestMany(t2, d2, expected, lt);
drchase@6134:         }
drchase@6134:     }
drchase@6134: 
drchase@6134:     private static void invokeTestMany(Class<?> t, Class<?> d, Class<?> expected, List<Throwable> lt)
drchase@6134:             throws Throwable {
drchase@6134:         try {
drchase@6134:             Method m = t.getMethod("test", p.I.class,
drchase@6134:                     Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE,
drchase@6134:                     Object.class, Object.class, Object.class,
drchase@6134:                     Object.class, Object.class, Object.class);
drchase@6134:             Object o = d.newInstance();
drchase@6134:             Byte b = 1;
drchase@6134:             Character c = 2;
drchase@6134:             Short s = 3;
drchase@6134:             Integer i = 4;
drchase@6134:             Long j = 5L;
drchase@6134:             Object o1 = b;
drchase@6134:             Object o2 = c;
drchase@6134:             Object o3 = s;
drchase@6134:             Object o4 = i;
drchase@6134:             Object o5 = j;
drchase@6134:             Object o6 = "6";
drchase@6134: 
drchase@6134:             Object result = m.invoke(null, o, b, c, s, i, j,
drchase@6134:                     o1, o2, o3, o4, o5, o6);
drchase@6134:             if (expected != null) {
drchase@6134:                 System.out.println("FAIL, Expected " + expected.getName()
drchase@6134:                         + " wrapped in InvocationTargetException, but nothing was thrown");
drchase@6134:                 lt.add(new Error("Exception " + expected.getName()
drchase@6134:                         + " was not thrown"));
drchase@6134:             } else {
drchase@6134:                 System.out.println("PASS, saw expected return.");
drchase@6134:             }
drchase@6134:         } catch (InvocationTargetException e) {
drchase@6134:             Throwable th = e.getCause();
drchase@6134:             th.printStackTrace(System.out);
drchase@6134:             if (expected != null) {
drchase@6134:                 if (expected.isInstance(th)) {
drchase@6134:                     System.out.println("PASS, saw expected exception ("
drchase@6134:                             + expected.getName() + ").");
drchase@6134:                 } else {
drchase@6134:                     System.out.println("FAIL, Expected " + expected.getName()
drchase@6134:                             + " wrapped in InvocationTargetException, saw " + th);
drchase@6134:                     lt.add(th);
drchase@6134:                 }
drchase@6134:             } else {
drchase@6134:                 System.out.println("FAIL, expected no exception, saw " + th);
drchase@6134:                 lt.add(th);
drchase@6134:             }
drchase@6134:         }
drchase@6134:         System.out.println();
drchase@6134:     }
drchase@6134: 
drchase@6134:     /**
drchase@6134:      * This tests a peculiar idiom for tickling the bug on older VMs that lack
drchase@6134:      * methodhandles.  The bug (if not fixed) acts in the following way:
drchase@6134:      *
drchase@6134:      *  When a broken receiver is passed to the first execution of an invokeinterface
drchase@6134:      * bytecode, the illegal access is detected before the effects of resolution are
drchase@6134:      * cached for later use, and so repeated calls with a broken receiver will always
drchase@6134:      * throw the correct error.
drchase@6134:      *
drchase@6134:      * If, however, a good receiver is passed to the invokeinterface, the effects of
drchase@6134:      * resolution will be successfully cached.  A subsequent execution with a broken
drchase@6134:      * receiver will reuse the cached information, skip the detailed resolution work,
drchase@6134:      * and instead encounter a null pointer.  By convention, that is the encoding for a
drchase@6134:      * missing abstract method, and an AbstractMethodError is thrown -- not the expected
drchase@6134:      * IllegalAccessError.
drchase@6134:      *
drchase@6134:      * @param t2 Test invocation class
drchase@6134:      * @param d2 Test receiver class
drchase@6134:      * @param expected expected exception type
drchase@6134:      * @param lt list of unexpected throwables seen
drchase@6134:      */
drchase@6134:     private static void badGoodBadGood(Class<?> t2, Class<?> d2, Class<?> expected, List<Throwable> lt)
drchase@6134:             throws Throwable {
drchase@6134:         System.out.println("  Error input 1st time");
drchase@6134:         invokeTest(t2, d2, expected, lt);
drchase@6134:         System.out.println("  Good input (instance of Dok)");
drchase@6134:         invokeTest(t2, Dok.class, null, lt);
drchase@6134:         System.out.println("  Error input 2nd time");
drchase@6134:         invokeTest(t2, d2, expected, lt);
drchase@6134:         System.out.println("  Good input (instance of Dok)");
drchase@6134:         invokeTest(t2, Dok.class, null, lt);
drchase@6134:     }
drchase@6134: 
drchase@6134:     private static void badGoodBadGoodMany(Class<?> t2, Class<?> d2, Class<?> expected, List<Throwable> lt)
drchase@6134:             throws Throwable {
drchase@6134:         System.out.println("  Error input 1st time");
drchase@6134:         invokeTestMany(t2, d2, expected, lt);
drchase@6134:         System.out.println("  Good input (instance of Dok)");
drchase@6134:         invokeTestMany(t2, Dok.class, null, lt);
drchase@6134:         System.out.println("  Error input 2nd time");
drchase@6134:         invokeTestMany(t2, d2, expected, lt);
drchase@6134:         System.out.println("  Good input (instance of Dok)");
drchase@6134:         invokeTestMany(t2, Dok.class, null, lt);
drchase@5800:     }
drchase@5800: }