ldc2 crashes when trying to compile my app

[Per Nordlöw]

On Saturday, 1 September 2018 at 19:52:14 UTC, kinke wrote:
> `_Z7DtoLValP6DValue` may be suitable...

Is this a C++-symbol?

import core.demangle;
demangle("_Z7DtoLValP6DValue")

returns the same string...