FULL PRODUCT VERSION :
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b07)
Java HotSpot(TM) Client VM (build 17.0-b17, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Versione 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
When using generics in varargs and no parameter is explicitly passed to the API, the compiler produces a wrong output which causes a java.lang.ClassCastException to be thrown.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
public class Foo
{
    public static <T> T[] foo(T... o)
    {
        return o;
    }

    public static void main(String[] args)
    {
        String[] s = foo();
        System.out.println(s);
    }
}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
[Ljava.lang.String;@19821f
ACTUAL -
Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Ljava.lang.String;

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Ljava.lang.String;

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Foo
{
    public static <T> T[] foo(T... o)
    {
        return o;
    }

    public static void main(String[] args)
    {
        String[] s = foo();
        System.out.println(s);
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Never use foo() without specifying any parameter.