Re: o!(const(T)) parameter.

[sclytrack via Digitalmars-d-learn]

It works when you exclude the recursive alias this:
    static if(!is(T == const)) alias constify this;

Your original program crashes the compiler, which is always a bug. I filed an issue:

https://issues.dlang.org/show_bug.cgi?id=14499

Thank you, very much.