#![feature(marker_trait_attr)] | |
#[marker(always)] //~ ERROR malformed `marker` attribute | |
trait Marker1 {} | |
#[marker("never")] //~ ERROR malformed `marker` attribute | |
trait Marker2 {} | |
#[marker(key = "value")] //~ ERROR malformed `marker` attribute | |
trait Marker3 {} | |
fn main() {} |