#![feature(coroutines, coroutine_trait, stmt_expr_attributes)] use std::ops::Coroutine; use std::pin::Pin; fn main() { let _b = { let a = 3; Pin::new(&mut #[coroutine] || yield &a).resume(()) //~^ ERROR: `a` does not live long enough }; let _b = { let a = 3; #[coroutine] || { yield &a //~^ ERROR: `a` does not live long enough } }; }