no size yet for forward reference error

[Jonathan M Davis via Digitalmars-d]

On Thursday, 25 February 2016 at 04:23:52 UTC, Erik Smith wrote:
> Here's a better reduction of the problem.  Commenting out 
> either of the lines marked HERE eliminates the error.   It's 
> some kind of interaction with templates, RefCounted, and the 
> cross referencing types.
>
> erik
>
>
> module database;
> import std.typecons;
>
> unittest {
>     auto con = Connection!int();
> }
>
> struct Connection(T) {
>     alias Statement = .Statement!T;   // HERE
> }
>
> struct Statement(T) {
>     alias Connection = .Connection!T;
>
>     private:
>
>     struct Payload {
>         Connection con;
>         this(Connection con_) {con = con_;}
>     }
>
>     alias RefCounted!(Payload, RefCountedAutoInitialize.no) 
> Data;
>     Data data_;  // HERE
> }

Actually, both of your examples compile for me - both with master 
and with 2.070.0. I'm running on x86_64 FreeBSD (which you 
probably aren't), which shouldn't matter for this sort of error, 
but I suppose that it's possible that it's somehow 
system-specific, much as I wouldn't expect it to be. So, I don't 
what to say. :|

- Jonathan M Davis