compiling this code fragment:

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

class C(T1) { alias T1 type1; }
class C(T1,T2) { alias T1 type1; alias C!(T2) type2; }

void main()
{
    alias C!(int,long) CT;
    CT c = new CT();
}

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

does give the following output:

parse     bug3
semantic  bug3
semantic2 bug3
semantic3 bug3
template instance C!(long) C is not a template declaration
template instance C!(long) cannot resolve forward reference



regards,
roel