How to pass noncopyable variadic arguments with ref?

[user1234]

On Thursday, 20 October 2022 at 16:34:34 UTC, user1234 wrote:
> On Thursday, 20 October 2022 at 14:03:10 UTC, tchaloupka wrote:
>> Hi,
>> I've found strange behavior where:
>> [...]
>> Shouldn't it at least protest that objects can't be passed to 
>> the function as they aren't copyable?
>
> it's clearly a compiler bug to me. Something is not checked 
> when the call is verified.

however (forgot to say) this form of variadic was proposed for 
deprecation.
So maybe the bug is more an argument to drop them.