dup method const or not?

[mta`chrono]

that's a real good question. it fails with the following error:

Error: function std.bitmanip.BitArray.dup () is not callable using
argument types () const


here is a hack:

---
import std.bitmanip;
import core.stdc.string;

void main()
{
    const(BitArray) foo;
    BitArray bar;

    memcpy(&bar, &foo, BitArray.sizeof);
}
---