| /* |
| * Copyright (c) 2013, 2015, 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 8025260 8016839 |
| * @summary Ensure that AbstractMethodError and IllegalAccessError are thrown appropriately, not NullPointerException |
| * @modules java.base/jdk.internal.org.objectweb.asm |
| * @library / . |
| * |
| * @build p.* |
| * @run main/othervm compiler.jsr292.methodHandleExceptions.TestAMEnotNPE |
| * @run main/othervm -Xint compiler.jsr292.methodHandleExceptions.TestAMEnotNPE |
| * @run main/othervm -Xcomp compiler.jsr292.methodHandleExceptions.TestAMEnotNPE |
| */ |
| |
| package compiler.jsr292.methodHandleExceptions; |
| |
| import p.Dok; |
| import jdk.internal.org.objectweb.asm.ClassWriter; |
| import jdk.internal.org.objectweb.asm.Handle; |
| import jdk.internal.org.objectweb.asm.MethodVisitor; |
| import jdk.internal.org.objectweb.asm.Opcodes; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static jdk.internal.org.objectweb.asm.Opcodes.ACC_PRIVATE; |
| import static jdk.internal.org.objectweb.asm.Opcodes.ACC_PUBLIC; |
| import static jdk.internal.org.objectweb.asm.Opcodes.ACC_STATIC; |
| import static jdk.internal.org.objectweb.asm.Opcodes.ACC_SUPER; |
| import static jdk.internal.org.objectweb.asm.Opcodes.ALOAD; |
| import static jdk.internal.org.objectweb.asm.Opcodes.ILOAD; |
| import static jdk.internal.org.objectweb.asm.Opcodes.INVOKESPECIAL; |
| import static jdk.internal.org.objectweb.asm.Opcodes.INVOKEVIRTUAL; |
| import static jdk.internal.org.objectweb.asm.Opcodes.IRETURN; |
| import static jdk.internal.org.objectweb.asm.Opcodes.LLOAD; |
| import static jdk.internal.org.objectweb.asm.Opcodes.RETURN; |
| import static jdk.internal.org.objectweb.asm.Opcodes.V1_8; |
| |
| public class TestAMEnotNPE { |
| |
| static boolean writeJarFiles = false; |
| static boolean readJarFiles = false; |
| |
| /** |
| * Optional command line parameter (any case-insensitive prefix of) |
| * "writejarfiles" or "readjarfiles". |
| * |
| * "Writejarfiles" creates a jar file for each different set of tested classes. |
| * "Readjarfiles" causes the classloader to use the copies of the classes |
| * found in the corresponding jar files. |
| * |
| * Jarfilenames look something like pD_ext_pF (p.D extends p.F) |
| * and qD_m_pp_imp_pI (q.D with package-private m implements p.I) |
| * |
| */ |
| public static void main(String args[]) throws Throwable { |
| ArrayList<Throwable> lt = new ArrayList<Throwable>(); |
| |
| if (args.length > 0) { |
| String a0 = args[0].toLowerCase(); |
| if (a0.length() > 0) { |
| writeJarFiles = ("writejarfiles").startsWith(a0); |
| readJarFiles = ("readjarfiles").startsWith(a0); |
| } |
| if (!(writeJarFiles || readJarFiles)) { |
| throw new Error("Command line parameter (if any) should be prefix of writeJarFiles or readJarFiles"); |
| } |
| } |
| |
| try { |
| System.out.println("TRYING p.D.m PRIVATE interface-invoked as p.I.m, p.D extends p.F, p.F.m FINAL"); |
| tryAndCheckThrown(lt, bytesForDprivateSubWhat("p/F"), |
| "p.D extends p.F (p.F implements p.I, FINAL public m), private m", |
| IllegalAccessError.class, "pD_ext_pF"); |
| // We'll take either a VerifyError (pre 2013-11-30) |
| // or an IllegalAccessError (post 2013-11-22) |
| } catch (VerifyError ve) { |
| System.out.println("Saw expected VerifyError " + ve); |
| } |
| System.out.println(); |
| |
| System.out.println("TRYING p.D.m PRIVATE interface-invoked as p.I.m, p.D extends p.E"); |
| tryAndCheckThrown(lt, bytesForDprivateSubWhat("p/E"), |
| "p.D extends p.E (p.E implements p.I, public m), private m", |
| IllegalAccessError.class, "pD_ext_pE"); |
| |
| System.out.println("TRYING p.D.m ABSTRACT interface-invoked as p.I.m"); |
| tryAndCheckThrown(lt, bytesForD(), |
| "D extends abstract C, no m", |
| AbstractMethodError.class, "pD_ext_pC"); |
| |
| System.out.println("TRYING q.D.m PACKAGE interface-invoked as p.I.m"); |
| tryAndCheckThrown(lt, "q.D", bytesForDsomeAccess("q/D", 0), |
| "q.D implements p.I, protected m", IllegalAccessError.class, |
| "qD_m_pp_imp_pI"); |
| |
| // Note jar file name is used in the plural-arg case. |
| System.out.println("TRYING p.D.m PRIVATE interface-invoked as p.I.m"); |
| tryAndCheckThrown(lt, bytesForDsomeAccess("p/D", ACC_PRIVATE), |
| "p.D implements p.I, private m", |
| IllegalAccessError.class, "pD_m_pri_imp_pI"); |
| |
| // Plural-arg test. |
| System.out.println("TRYING p.D.m PRIVATE MANY ARG interface-invoked as p.I.m"); |
| tryAndCheckThrownMany(lt, bytesForDsomeAccess("p/D", ACC_PRIVATE), |
| "p.D implements p.I, private m", IllegalAccessError.class); |
| |
| if (lt.size() > 0) { |
| System.out.flush(); |
| Thread.sleep(250); // This de-interleaves output and error in Netbeans, sigh. |
| for (Throwable th : lt) |
| System.err.println(th); |
| throw new Error("Test failed, there were " + lt.size() + " failures listed above"); |
| } else { |
| System.out.println("ALL PASS, HOORAY!"); |
| } |
| } |
| |
| /** |
| * The bytes for D, a NOT abstract class extending abstract class C without |
| * supplying an implementation for abstract method m. There is a default |
| * method in the interface I, but it should lose to the abstract class. |
| * |
| * @return |
| * @throws Exception |
| */ |
| public static byte[] bytesForD() throws Exception { |
| |
| ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES |
| | ClassWriter.COMPUTE_MAXS); |
| MethodVisitor mv; |
| |
| cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/D", null, "p/C", null); |
| |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "p/C", "<init>", "()V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| |
| return cw.toByteArray(); |
| } |
| |
| /** |
| * The bytes for D, implements I, does not extend C, declares m()I with |
| * access method_acc. |
| * |
| * @param d_name Name of class defined |
| * @param method_acc Accessibility of that class's method m. |
| * @return |
| * @throws Exception |
| */ |
| public static byte[] bytesForDsomeAccess(String d_name, int method_acc) throws Exception { |
| return bytesForSomeDsubSomethingSomeAccess(d_name, "java/lang/Object", method_acc); |
| } |
| |
| /** |
| * The bytes for D implements I, extends some class, declares m()I as |
| * private. |
| * |
| * Invokeinterface of I.m applied to this D should throw IllegalAccessError |
| * |
| * @param sub_what The name of the class that D will extend. |
| * @return |
| * @throws Exception |
| */ |
| public static byte[] bytesForDprivateSubWhat(String sub_what) throws Exception { |
| return bytesForSomeDsubSomethingSomeAccess("p/D", sub_what, ACC_PRIVATE); |
| } |
| |
| /** |
| * Returns the bytes for a class with name d_name (presumably "D" in some |
| * package), extending some class with name sub_what, implementing p.I, |
| * and defining two methods m() and m(11args) with access method_acc. |
| * |
| * @param d_name Name of class that is defined |
| * @param sub_what Name of class that it extends |
| * @param method_acc Accessibility of method(s) m in defined class. |
| * @return |
| * @throws Exception |
| */ |
| public static byte[] bytesForSomeDsubSomethingSomeAccess |
| (String d_name, String sub_what, int method_acc) |
| throws Exception { |
| |
| ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES |
| | ClassWriter.COMPUTE_MAXS); |
| MethodVisitor mv; |
| String[] interfaces = {"p/I"}; |
| |
| cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, d_name, null, sub_what, interfaces); |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, sub_what, "<init>", "()V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| // int m() {return 3;} |
| { |
| mv = cw.visitMethod(method_acc, "m", "()I", null, null); |
| mv.visitCode(); |
| mv.visitLdcInsn(new Integer(3)); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| // int m(11args) {return 3;} |
| { |
| mv = cw.visitMethod(method_acc, "m", "(BCSIJ" |
| + "Ljava/lang/Object;" |
| + "Ljava/lang/Object;" |
| + "Ljava/lang/Object;" |
| + "Ljava/lang/Object;" |
| + "Ljava/lang/Object;" |
| + "Ljava/lang/Object;" |
| + ")I", null, null); |
| mv.visitCode(); |
| mv.visitLdcInsn(new Integer(3)); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| return cw.toByteArray(); |
| } |
| |
| /** |
| * The bytecodes for a class p/T defining a methods test() and test(11args) |
| * that contain an invokeExact of a particular methodHandle, I.m. |
| * |
| * Test will be passed values that may imperfectly implement I, |
| * and thus may in turn throw exceptions. |
| * |
| * @return |
| * @throws Exception |
| */ |
| public static byte[] bytesForT() throws Exception { |
| |
| ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES |
| | ClassWriter.COMPUTE_MAXS); |
| MethodVisitor mv; |
| |
| cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/T", null, "java/lang/Object", null); |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| // static int test(I) |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;)I", null, null); |
| mv.visitCode(); |
| mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "()I")); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle", |
| "invokeExact", "(Lp/I;)I"); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| // static int test(I,11args) |
| { |
| 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); |
| mv.visitCode(); |
| 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")); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitVarInsn(ILOAD, 1); |
| mv.visitVarInsn(ILOAD, 2); |
| mv.visitVarInsn(ILOAD, 3); |
| mv.visitVarInsn(ILOAD, 4); |
| mv.visitVarInsn(LLOAD, 5); |
| mv.visitVarInsn(ALOAD, 7); |
| mv.visitVarInsn(ALOAD, 8); |
| mv.visitVarInsn(ALOAD, 9); |
| mv.visitVarInsn(ALOAD, 10); |
| mv.visitVarInsn(ALOAD, 11); |
| mv.visitVarInsn(ALOAD, 12); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle", |
| "invokeExact", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I"); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| return cw.toByteArray(); |
| } |
| |
| private static void tryAndCheckThrown( |
| List<Throwable> lt, byte[] dBytes, String what, Class<?> expected, String jar_name) |
| throws Throwable { |
| tryAndCheckThrown(lt, "p.D", dBytes, what, expected, jar_name); |
| } |
| |
| private static void tryAndCheckThrown(List<Throwable> lt, String d_name, byte[] dBytes, String what, Class<?> expected, String jar_name) |
| throws Throwable { |
| |
| System.out.println("Methodhandle invokeExact I.m() for instance of " + what); |
| ByteClassLoader bcl1 = new ByteClassLoader(jar_name, readJarFiles, writeJarFiles); |
| try { |
| Class<?> d1 = bcl1.loadBytes(d_name, dBytes); |
| Class<?> t1 = bcl1.loadBytes("p.T", bytesForT()); |
| invokeTest(t1, d1, expected, lt); |
| } finally { |
| // Not necessary for others -- all class files are written in this call. |
| // (unless the VM crashes first). |
| bcl1.close(); |
| } |
| |
| System.out.println("Reflection invoke I.m() for instance of " + what); |
| ByteClassLoader bcl3 = new ByteClassLoader(jar_name, readJarFiles, false); |
| Class<?> d3 = bcl3.loadBytes(d_name, dBytes); |
| Class<?> t3 = bcl3.loadClass("p.Treflect"); |
| invokeTest(t3, d3, expected, lt); |
| |
| System.out.println("Bytecode invokeInterface I.m() for instance of " + what); |
| ByteClassLoader bcl2 = new ByteClassLoader(jar_name, readJarFiles, false); |
| Class<?> d2 = bcl2.loadBytes(d_name, dBytes); |
| Class<?> t2 = bcl2.loadClass("p.Tdirect"); |
| badGoodBadGood(t2, d2, expected, lt); |
| } |
| |
| private static void invokeTest(Class<?> t, Class<?> d, Class<?> expected, List<Throwable> lt) |
| throws Throwable { |
| try { |
| Method m = t.getMethod("test", p.I.class); |
| Object o = d.newInstance(); |
| Object result = m.invoke(null, o); |
| if (expected != null) { |
| System.out.println("FAIL, Expected " + expected.getName() |
| + " wrapped in InvocationTargetException, but nothing was thrown"); |
| lt.add(new Error("Exception " + expected.getName() + " was not thrown")); |
| } else { |
| System.out.println("PASS, saw expected return."); |
| } |
| } catch (InvocationTargetException e) { |
| Throwable th = e.getCause(); |
| th.printStackTrace(System.out); |
| if (expected != null) { |
| if (expected.isInstance(th)) { |
| System.out.println("PASS, saw expected exception (" + expected.getName() + ")."); |
| } else { |
| System.out.println("FAIL, Expected " + expected.getName() |
| + " wrapped in InvocationTargetException, saw " + th); |
| lt.add(th); |
| } |
| } else { |
| System.out.println("FAIL, expected no exception, saw " + th); |
| lt.add(th); |
| } |
| } |
| System.out.println(); |
| } |
| |
| /* Many-arg versions of above */ |
| private static void tryAndCheckThrownMany(List<Throwable> lt, byte[] dBytes, String what, Class<?> expected) |
| throws Throwable { |
| |
| System.out.println("Methodhandle invokeExact I.m(11params) for instance of " + what); |
| ByteClassLoader bcl1 = new ByteClassLoader("p.D", readJarFiles, false); |
| try { |
| Class<?> d1 = bcl1.loadBytes("p.D", dBytes); |
| Class<?> t1 = bcl1.loadBytes("p.T", bytesForT()); |
| invokeTestMany(t1, d1, expected, lt); |
| } finally { |
| bcl1.close(); // Not necessary for others -- all class files are written in this call. |
| } |
| |
| { |
| System.out.println("Bytecode invokeInterface I.m(11params) for instance of " + what); |
| ByteClassLoader bcl2 = new ByteClassLoader("pD_m_pri_imp_pI", readJarFiles, false); |
| Class<?> d2 = bcl2.loadBytes("p.D", dBytes); |
| Class<?> t2 = bcl2.loadClass("p.Tdirect"); |
| badGoodBadGoodMany(t2, d2, expected, lt); |
| |
| } |
| { |
| System.out.println("Reflection invokeInterface I.m(11params) for instance of " + what); |
| ByteClassLoader bcl2 = new ByteClassLoader("pD_m_pri_imp_pI", readJarFiles, false); |
| Class<?> d2 = bcl2.loadBytes("p.D", dBytes); |
| Class<?> t2 = bcl2.loadClass("p.Treflect"); |
| invokeTestMany(t2, d2, expected, lt); |
| } |
| } |
| |
| private static void invokeTestMany(Class<?> t, Class<?> d, Class<?> expected, List<Throwable> lt) |
| throws Throwable { |
| try { |
| Method m = t.getMethod("test", p.I.class, |
| Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, |
| Object.class, Object.class, Object.class, |
| Object.class, Object.class, Object.class); |
| Object o = d.newInstance(); |
| Byte b = 1; |
| Character c = 2; |
| Short s = 3; |
| Integer i = 4; |
| Long j = 5L; |
| Object o1 = b; |
| Object o2 = c; |
| Object o3 = s; |
| Object o4 = i; |
| Object o5 = j; |
| Object o6 = "6"; |
| |
| Object result = m.invoke(null, o, b, c, s, i, j, |
| o1, o2, o3, o4, o5, o6); |
| if (expected != null) { |
| System.out.println("FAIL, Expected " + expected.getName() |
| + " wrapped in InvocationTargetException, but nothing was thrown"); |
| lt.add(new Error("Exception " + expected.getName() |
| + " was not thrown")); |
| } else { |
| System.out.println("PASS, saw expected return."); |
| } |
| } catch (InvocationTargetException e) { |
| Throwable th = e.getCause(); |
| th.printStackTrace(System.out); |
| if (expected != null) { |
| if (expected.isInstance(th)) { |
| System.out.println("PASS, saw expected exception (" |
| + expected.getName() + ")."); |
| } else { |
| System.out.println("FAIL, Expected " + expected.getName() |
| + " wrapped in InvocationTargetException, saw " + th); |
| lt.add(th); |
| } |
| } else { |
| System.out.println("FAIL, expected no exception, saw " + th); |
| lt.add(th); |
| } |
| } |
| System.out.println(); |
| } |
| |
| /** |
| * This tests a peculiar idiom for tickling the bug on older VMs that lack |
| * methodhandles. The bug (if not fixed) acts in the following way: |
| * |
| * When a broken receiver is passed to the first execution of an invokeinterface |
| * bytecode, the illegal access is detected before the effects of resolution are |
| * cached for later use, and so repeated calls with a broken receiver will always |
| * throw the correct error. |
| * |
| * If, however, a good receiver is passed to the invokeinterface, the effects of |
| * resolution will be successfully cached. A subsequent execution with a broken |
| * receiver will reuse the cached information, skip the detailed resolution work, |
| * and instead encounter a null pointer. By convention, that is the encoding for a |
| * missing abstract method, and an AbstractMethodError is thrown -- not the expected |
| * IllegalAccessError. |
| * |
| * @param t2 Test invocation class |
| * @param d2 Test receiver class |
| * @param expected expected exception type |
| * @param lt list of unexpected throwables seen |
| */ |
| private static void badGoodBadGood(Class<?> t2, Class<?> d2, Class<?> expected, List<Throwable> lt) |
| throws Throwable { |
| System.out.println(" Error input 1st time"); |
| invokeTest(t2, d2, expected, lt); |
| System.out.println(" Good input (instance of Dok)"); |
| invokeTest(t2, Dok.class, null, lt); |
| System.out.println(" Error input 2nd time"); |
| invokeTest(t2, d2, expected, lt); |
| System.out.println(" Good input (instance of Dok)"); |
| invokeTest(t2, Dok.class, null, lt); |
| } |
| |
| private static void badGoodBadGoodMany(Class<?> t2, Class<?> d2, Class<?> expected, List<Throwable> lt) |
| throws Throwable { |
| System.out.println(" Error input 1st time"); |
| invokeTestMany(t2, d2, expected, lt); |
| System.out.println(" Good input (instance of Dok)"); |
| invokeTestMany(t2, Dok.class, null, lt); |
| System.out.println(" Error input 2nd time"); |
| invokeTestMany(t2, d2, expected, lt); |
| System.out.println(" Good input (instance of Dok)"); |
| invokeTestMany(t2, Dok.class, null, lt); |
| } |
| } |