error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks --> $DIR/yield-in-const.rs:3:17 | LL | const A: u8 = { yield 3u8; 3u8}; | ^^^^^^^^^ error[E0627]: yield expression outside of coroutine literal --> $DIR/yield-in-const.rs:3:17 | LL | const A: u8 = { yield 3u8; 3u8}; | ^^^^^^^^^ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0627`.