8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 8042235
  27  * @summary redefining method used by multiple MethodHandles crashes VM

  28  * @modules java.base/jdk.internal.org.objectweb.asm
  29  *          java.compiler
  30  *          java.instrument
  31  *          java.management
  32  * @compile -XDignore.symbol.file RedefineMethodUsedByMultipleMethodHandles.java
  33  * @run main/othervm RedefineMethodUsedByMultipleMethodHandles
  34  */
  35 
  36 import java.io.*;
  37 import java.lang.instrument.*;
  38 import java.lang.invoke.*;
  39 import java.lang.invoke.MethodHandles.Lookup;
  40 import java.lang.management.*;
  41 import java.lang.reflect.*;
  42 import java.nio.file.*;
  43 import java.security.*;
  44 import java.util.jar.*;
  45 
  46 import javax.tools.*;




  47 
  48 import jdk.internal.org.objectweb.asm.*;


















  49 
  50 public class RedefineMethodUsedByMultipleMethodHandles {
  51 
  52     static class Foo {
  53         public static Object getName() {
  54             return "foo";
  55         }
  56     }
  57 
  58     public static void main(String[] args) throws Throwable {
  59 
  60         Lookup lookup = MethodHandles.lookup();
  61         Method fooMethod = Foo.class.getDeclaredMethod("getName");
  62 
  63         // fooMH2 displaces fooMH1 from the MemberNamesTable
  64         MethodHandle fooMH1 = lookup.unreflect(fooMethod);
  65         MethodHandle fooMH2 = lookup.unreflect(fooMethod);
  66 
  67         System.out.println("fooMH1.invoke = " + fooMH1.invokeExact());
  68         System.out.println("fooMH2.invoke = " + fooMH2.invokeExact());

   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 8042235
  27  * @summary redefining method used by multiple MethodHandles crashes VM
  28  * @library /
  29  * @modules java.base/jdk.internal.org.objectweb.asm
  30  *          java.compiler
  31  *          java.instrument
  32  *          java.management
  33  *
  34  * @run main/othervm compiler.jsr292.RedefineMethodUsedByMultipleMethodHandles
  35  */
  36 
  37 package compiler.jsr292;








  38 
  39 import jdk.internal.org.objectweb.asm.ClassReader;
  40 import jdk.internal.org.objectweb.asm.ClassVisitor;
  41 import jdk.internal.org.objectweb.asm.ClassWriter;
  42 import jdk.internal.org.objectweb.asm.MethodVisitor;
  43 import jdk.internal.org.objectweb.asm.Opcodes;
  44 
  45 import javax.tools.ToolProvider;
  46 import java.io.FileOutputStream;
  47 import java.io.IOException;
  48 import java.io.InputStream;
  49 import java.lang.instrument.ClassFileTransformer;
  50 import java.lang.instrument.IllegalClassFormatException;
  51 import java.lang.instrument.Instrumentation;
  52 import java.lang.invoke.MethodHandle;
  53 import java.lang.invoke.MethodHandles;
  54 import java.lang.invoke.MethodHandles.Lookup;
  55 import java.lang.management.ManagementFactory;
  56 import java.lang.reflect.Method;
  57 import java.nio.file.Files;
  58 import java.nio.file.Path;
  59 import java.security.ProtectionDomain;
  60 import java.util.jar.Attributes;
  61 import java.util.jar.JarEntry;
  62 import java.util.jar.JarOutputStream;
  63 import java.util.jar.Manifest;
  64 
  65 public class RedefineMethodUsedByMultipleMethodHandles {
  66 
  67     static class Foo {
  68         public static Object getName() {
  69             return "foo";
  70         }
  71     }
  72 
  73     public static void main(String[] args) throws Throwable {
  74 
  75         Lookup lookup = MethodHandles.lookup();
  76         Method fooMethod = Foo.class.getDeclaredMethod("getName");
  77 
  78         // fooMH2 displaces fooMH1 from the MemberNamesTable
  79         MethodHandle fooMH1 = lookup.unreflect(fooMethod);
  80         MethodHandle fooMH2 = lookup.unreflect(fooMethod);
  81 
  82         System.out.println("fooMH1.invoke = " + fooMH1.invokeExact());
  83         System.out.println("fooMH2.invoke = " + fooMH2.invokeExact());