33 lines
781 B
Rust
33 lines
781 B
Rust
fn main() {
|
|
struct U;
|
|
fn accept_fn_once(_: &impl FnOnce()) {}
|
|
fn accept_fn_mut(_: &impl FnMut()) {}
|
|
fn accept_fn(_: &impl Fn()) {}
|
|
|
|
let mut tup = (U, U, U);
|
|
let (ref _x0, _x1, ref mut _x2) = tup;
|
|
let c1 = || {
|
|
//~^ ERROR expected a closure that implements the `FnMut`
|
|
//~| ERROR expected a closure that implements the `Fn`
|
|
drop::<&U>(_x0);
|
|
drop::<U>(_x1);
|
|
drop::<&mut U>(_x2);
|
|
};
|
|
accept_fn_once(&c1);
|
|
accept_fn_mut(&c1);
|
|
accept_fn(&c1);
|
|
|
|
let c2 = || {
|
|
//~^ ERROR expected a closure that implements the `Fn`
|
|
drop::<&U>(_x0);
|
|
drop::<&mut U>(_x2);
|
|
};
|
|
accept_fn_mut(&c2);
|
|
accept_fn(&c2);
|
|
|
|
let c3 = || {
|
|
drop::<&U>(_x0);
|
|
};
|
|
accept_fn(&c3);
|
|
}
|