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#![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
use std::cell::Cell;
use std::ops::{Coroutine, CoroutineState};
use std::pin::Pin;
fn reborrow_shared_ref(x: &i32) {
// This is OK -- we have a borrow live over the yield, but it's of
// data that outlives the coroutine.
let mut b = #[coroutine]
move || {
let a = &*x;
yield ();
println!("{}", a);
};
Pin::new(&mut b).resume(());
}
fn reborrow_mutable_ref(x: &mut i32) {
// This is OK -- we have a borrow live over the yield, but it's of
// data that outlives the coroutine.
let mut b = #[coroutine]
move || {
let a = &mut *x;
yield ();
println!("{}", a);
};
Pin::new(&mut b).resume(());
}
fn reborrow_mutable_ref_2(x: &mut i32) {
// ...but not OK to go on using `x`.
let mut b = #[coroutine]
|| {
let a = &mut *x;
yield ();
println!("{}", a);
};
println!("{}", x); //~ ERROR
Pin::new(&mut b).resume(());
}
fn main() {}
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