Prevent self-comparison without taking the address

[Nick Treleaven]

On Thursday, 25 July 2024 at 15:06:35 UTC, IchorDev wrote:
> I think your function most likely has a safe interface, so it 
> can be marked as `@trusted` as-per [the 
> spec](https://dlang.org/spec/function.html#safe-interfaces).

Just to mention that with -dip1000, taking the address of 
variables is allowed, so the function would be @safe.