[dmd-internals] where do forward reference errors originate?

[Trass3r]

There is this bug that is blocking my coding:  
http://d.puremagic.com/issues/show_bug.cgi?id=4267

alias Bar Bar2; // but the second one doesn't
alias Foo!(1) Bar; // 1 alias "level" works

//alias Bar Bar2; // putting it behind the 1st alias makes it work

template Foo(uint ver) {}

ddraw.d(1): Error: forward reference to 'Foo!(1)'


IIRC the error is "thrown" at mtype.c:5532 (TypeQualified::resolveHelper):

if (t->ty == Tinstance && t != this && !t->deco)
{   error(loc, "forward reference to '%s'", t->toChars());
     return;
}


I read that the check for deco means checking if semantic analysis has  
already been run.
So if this gives an error instead of calling t->semantic() I guess the  
root of the error is elsewhere?