Mixin template parameter overloading bug?

[Monkyyy]

On Sunday, 15 June 2025 at 10:51:37 UTC, Nick Treleaven wrote:
>
> So I think there must be another reason why your unary literals 
> work.

Given it's specifically void return, and top level and it acts 
like it matches the first return, I expect that void is 
incorrectly being considered a invalid return type thru 1 very 
specific pathway of the compiler