what exactly does cast(shared) and cast away shared do?

[Petar]

On Tuesday, 16 June 2020 at 08:32:47 UTC, Petar Kirov 
[ZombineDev] wrote:
>
> It has been implemented (modulo bugs [1][2]) as of:
>
> https://github.com/dlang/dmd/pull/10209
> https://github.com/dlang/dmd/pull/11239
>
> [1]: https://issues.dlang.org/show_bug.cgi?id=20195
> [2]: https://issues.dlang.org/show_bug.cgi?id=20908

Probably *mostly* implemented is a more accurate way to put it.