FULL PRODUCT VERSION :
java version  " 1.7.0_25 " 
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux sculpin 2.6.35-32-generic #67-Ubuntu SMP Mon Mar 5 19:39:49 UTC 2012 x86_64 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
When creating a dynamic proxy of an Object according to an interface with a method with varargs, the created proxy method does return false when calling isVarargs on it.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the provided main method.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expected output:
obj1 method call: varargs= true
proxy method call: varargs= true
values = [Ljava.lang.Object;@a5ae1e7
ACTUAL -
obj1 method call: varargs= true
proxy method call: varargs= false
values = [Ljava.lang.Object;@a5ae1e7

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

/**
 * Test.
 */
public class Test {

    public static void main(String[] args) {
        final C1 obj1 = new C1();

        Test1 proxy = (Test1) Proxy.newProxyInstance(obj1.getClass().getClassLoader(),
                                                     new Class[]{Test1.class},
                                                     new InvocationHandler() {
                                                         @Override
                                                         public Object invoke(
                                                             Object proxy,
                                                             Method method,
                                                             Object[] args) throws
                                                                            Throwable {
                                                             return method.invoke(obj1, args);
                                                         }
                                                     });

        for (Method m : obj1.getClass().getMethods()) {
            if (m.getName().equals( " call " )) {
                System.out.println( " obj1 method  "  + m.getName() +  " : varargs=  "  + m.isVarArgs());
            }
        }

        for (Method m : proxy.getClass().getMethods()) {
            if (m.getName().equals( " call " )) {
                System.out.println( " proxy method  "  + m.getName() +  " : varargs=  "  + m.isVarArgs());
            }
        }

        proxy.call();
    }
    interface Test1 {
        public void call(Object... values);
    }
    static class C1 implements Test1 {
        @Override
        public void call(Object... values) {
            System.out.println( " values =  "  + values);
        }
    }
}
---------- END SOURCE ----------