"Symbol undefined" on interface with public getter and package setter

[TSalm]

It seems this comes only from the "package" method.

The error is the same with this code :
/* --- CODE --- */
interface I
{
    package void setFunc(int);
}


class A:I
{
   int i;

   package  void setFunc(int i)
   { this.i = i ; }

}


void main()
{

   I a = new A;
   a.setFunc = 10;

}
/* --- END CODE --- */

> Hello,
>
> When I compile the code below, I've got the following error :
>   OPTLINK (R) for Win32  Release 8.00.1
>   Copyright (C) Digital Mars 1989-2004  All rights reserved.
>   private_method_in_interface_file3.obj(private_method_in_interface_file3)
>    Error 42: Symbol Undefined  
> _D33private_method_in_interface_file31I4funcMFiZv
>   --- errorlevel 1
>
>
> /* ----- CODE ------ */
> interface I
> {
>     int func() ;
>     package void func(int);
> }
>
> class A:I
> {
>    int i;
>
>    package  void func(int i)
>    { this.i = i; }
>
>    int func()
>    { return i; }
> }
>
> void main()
> {
>
>    I a = new A ;
>    a.func = 10 ;
>    Stdout(a.func).newline ;
>
> }
> /* --- END CODE ---- */
>
>
> Thanks in advance for your help,
> TSalm