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#![feature(generators, generator_trait)]
use std::ops::{GeneratorState, Generator};
use std::cell::Cell;
unsafe 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 generator.
let mut b = move || {
let a = &*x;
yield();
println!("{}", a);
};
b.resume();
}
unsafe 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 generator.
let mut b = move || {
let a = &mut *x;
yield();
println!("{}", a);
};
b.resume();
}
unsafe fn reborrow_mutable_ref_2(x: &mut i32) {
// ...but not OK to go on using `x`.
let mut b = || {
let a = &mut *x;
yield();
println!("{}", a);
};
println!("{}", x); //~ ERROR
b.resume();
}
fn main() { }
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