Does scope not work on parameters?

[Russ]

On Sunday, 23 February 2020 at 03:26:17 UTC, Steven Schveighoffer 
wrote:
> On 2/22/20 10:01 PM, Russ wrote:
>> Is there some newer feature I should be using?
>
> scope escapes are only disallowed in @safe code.
>
> Adding @safe: to the top of this file makes it not compile with 
> a complaint:
>
> Error: scope variable z assigned to non-scope b.foo
>
> Which I think is what you expected.
>
> As to why it happens without @safe, you may be managing your 
> global variable carefully and ensuring it's unset by the time 
> foo goes away. The compiler can't know.
>
> Another reason to enable safe-by-default...
>
> -Steve

Perfect, thank you! I agree that this sort of thing should be on 
by default. Better to opt-out than opt-in for memory safety.