rust/tests/ui/lint/empty-lint-attributes.rs

//@ check-pass

// Empty (and reason-only) lint attributes are legal—although we may want to
// lint them in the future (Issue #55112).

#![allow()]
#![warn(reason = "observationalism")]

#[forbid()]
fn devoir() {}

#[deny(reason = "ultion")]
fn waldgrave() {}

fn main() {}
Update test stderr with results of enabling unused lints 2019-09-01 21:30:19 +00:00			`//@ check-pass`
wherein the status of empty and reason-only lint attributes is clarified We avoid an ICE by checking for an empty meta-item list before we index into the meta-items, and leave commentary about where we'd like to issue unused-attributes lints in the future. Note that empty lint attributes are already accepted by the stable compiler; generalizing this to weird reason-only lint attributes seems like the conservative/consilient generalization. 2018-10-16 06:35:58 +00:00
			`// Empty (and reason-only) lint attributes are legal—although we may want to`
			`// lint them in the future (Issue #55112).`

			`#![allow()]`
			`#![warn(reason = "observationalism")]`

			`#[forbid()]`
			`fn devoir() {}`

			`#[deny(reason = "ultion")]`
			`fn waldgrave() {}`

			`fn main() {}`