Oops I didn't explain clearly. Take this code:

  pub fn abc() -> usize {
      #[allow(deprecated)]
      "abc".len()
  }

I want it to complain about the "allow", because there was never any deprecated warning emitted in the first place. Maybe it would be called #[expect(deprecated)]

I refactor code all the time and find these stray "allow"s that aren't doing anything anymore

> Maybe it would be called #[expect(deprecated)]

Both this and the reply saying you should open an RFC worry me that it was tongue-in-cheek.

Or maybe it's the obvious name choice, heh, because it literally exists with that very syntax: https://play.rust-lang.org/?version=nightly&mode=debug&editi...

Not stable yet, as you can see, but all the RFC and implementation work has been done, and a stabilization report was even put forward back in July: https://github.com/rust-lang/rust/issues/54503#issuecomment-...

That's hilarious, I had no idea! I'm glad I didn't embarrass myself by proposing an RFC. Thanks for the links!

This would be really cool! you should open up a RFC for it.

Ah, yeah that would be cool. Sorry for misunderstanding!