Error: non-shared method Node.~this is not callable using a shared object

[ChangLong]

This code is not working.
-----------------------
shared struct Stack {
         Node n = void ;
}
struct Node {
         ~this() {}
}
-----------------------
Error: non-shared method test.Node.~this is not callable using a 
shared object

Is this a bug ?  Node.~this is not called from Stack.