jdk8-mips64-public/hotspot: test/compiler/jsr292/methodHandleExceptions/TestAMEnotNPE.java@dc261f466b6d (annotated)

test/compiler/jsr292/methodHandleExceptions/TestAMEnotNPE.java@dc261f466b6d (annotated)

test/compiler/jsr292/methodHandleExceptions/TestAMEnotNPE.java

Fri, 27 Sep 2013 13:36:25 -0400

author: drchase
date: Fri, 27 Sep 2013 13:36:25 -0400
changeset 5800: dc261f466b6d
child 6134: 9d15b81d5d1b
permissions: -rw-r--r--

8025260: Methodhandles/JSR292: NullPointerException (NPE) thrown instead of AbstractMethodError (AME)
Summary: Copied null-checks from templateInterpreter_CPU into methodHandles_CPU
Reviewed-by: jrose, twisti

 /*
  * Copyright (c) 2013, 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.
  *
  */
 import java.lang.reflect.InvocationTargetException;
 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;
 /**
  * @test
  * @bug 8025260
  * @summary Ensure that AbstractMethodError is thrown, not NullPointerException, through MethodHandles::jump_from_method_handle code path
  *
  * @compile -XDignore.symbol.file ByteClassLoader.java I.java C.java TestAMEnotNPE.java
  * @run main/othervm TestAMEnotNPE
  */
 public class TestAMEnotNPE implements Opcodes {
     /**
      * 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.
      class D extends C {
         D() { super(); }
         // does not define m
      }
      * @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, "D", null, "C", null);
         {
             mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
             mv.visitCode();
             mv.visitVarInsn(ALOAD, 0);
             mv.visitMethodInsn(INVOKESPECIAL, "C", "<init>", "()V");
             mv.visitInsn(RETURN);
             mv.visitMaxs(0, 0);
             mv.visitEnd();
         }
         cw.visitEnd();
         return cw.toByteArray();
     }
     /**
      * The bytecodes for an invokeExact of a particular methodHandle, I.m, invoked on a D
         class T {
            T() { super(); } // boring constructor
            int test() {
               MethodHandle mh = `I.m():int`;
               D d = new D();
               return mh.invokeExact(d); // Should explode here, AbstractMethodError
            }
         }
      * @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, "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();
         }
         {
             mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
             mv.visitCode();
             mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "I", "m", "()I"));
             mv.visitTypeInsn(NEW, "D");
             mv.visitInsn(DUP);
             mv.visitMethodInsn(INVOKESPECIAL, "D", "<init>", "()V");
             mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle", "invokeExact", "(LI;)I");
             mv.visitInsn(IRETURN);
             mv.visitMaxs(0,0);
             mv.visitEnd();
         }
         cw.visitEnd();
         return cw.toByteArray();
     }
     public static void main(String args[] ) throws Throwable {
         ByteClassLoader bcl = new ByteClassLoader();
         Class<?> d = bcl.loadBytes("D", bytesForD());
         Class<?> t = bcl.loadBytes("T", bytesForT());
         try {
           Object result = t.getMethod("test").invoke(null);
           System.out.println("Expected AbstractMethodError wrapped in InvocationTargetException, saw no exception");
           throw new Error("Missing expected exception");
         } catch (InvocationTargetException e) {
             Throwable th = e.getCause();
             if (th instanceof AbstractMethodError) {
                 th.printStackTrace(System.out);
                 System.out.println("PASS, saw expected exception (AbstractMethodError, wrapped in InvocationTargetException).");
             } else {
                 System.out.println("Expected AbstractMethodError wrapped in InvocationTargetException, saw " + th);
                 throw th;
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/compiler/jsr292/methodHandleExceptions/TestAMEnotNPE.java@dc261f466b6d (annotated)

test/compiler/jsr292/methodHandleExceptions/TestAMEnotNPE.java