crash when using &this in struct constructor

[Eric]

On Monday, 16 July 2018 at 22:16:10 UTC, Adam D. Ruppe wrote:
> On Monday, 16 July 2018 at 22:08:34 UTC, Eric wrote:
>> This makes the compiler crash. Is it illegal code?
>
> Yes, a struct can be moved at any time by the compiler which 
> means pointers to it can be invalidated at random.
>
> Unless you always allocate it externally yourself...

I know that. At the moment I disable the postblit and use an 
init():

class Test {
   List ls;

   this() {
     ls.init();
   }
}

But I want to be able to write something less verbose like:

class Test {
   List ls = 1;
}

And I was hoping a this(int) constructor would happen in place, 
not move things around.