| // edition:2018 | |
| // Regression test for #95307. | |
| // The ICE occurred on all the editions, specifying edition:2018 to reduce diagnostics. | |
| pub trait C { | |
| async fn new() -> [u8; _]; | |
| //~^ ERROR: using `_` for array lengths is unstable | |
| //~| ERROR: in expressions, `_` can only be used on the left-hand side of an assignment | |
| } | |
| fn main() {} |