15 lines
302 B
Rust
15 lines
302 B
Rust
#![feature(box_syntax, unboxed_closures)]
|
|
|
|
fn to_fn_once<A,F:FnOnce<A>>(f: F) -> F { f }
|
|
fn do_it(x: &isize) { }
|
|
|
|
fn main() {
|
|
let x: Box<_> = box 22;
|
|
let f = to_fn_once(move|| do_it(&*x));
|
|
to_fn_once(move|| {
|
|
f();
|
|
f();
|
|
//~^ ERROR: use of moved value: `f`
|
|
})()
|
|
}
|