Is this a bug?

[Eric via Digitalmars-d-learn]

On Friday, 15 April 2016 at 17:43:59 UTC, ag0aep6g wrote:
> On 15.04.2016 19:13, Eric wrote:
>>    1 alias J = const C;
>>    2
>>    3 void main(string[] args)
>>    4 {
>>    5     J a = new C();
>>    6     I!(J) i = a;
>>    7 }
>>    8
>>    9 interface I(V) { }
>>   10
>>   11 class F(V) if (is(V : I!(V))) { }
>>   12
>>   13 class C : I!(J)
>>   14 {
>>   15     F!(J) m;
>>   16 }
>>
>
> Line 6 isn't accepted either. If you remove the constraint, the 
> compiler complains about it. So it's just the next error in 
> line.
>
> And really const C can't be converted to I!(const C) 
> implicitly. The former is const, the latter is mutable => no go.


Thanks. I see that now.  Is there any way I can make the compiler
understand that the interface is const?

-Eric