mirror of https://github.com/rust-lang/rust
26 lines
434 B
Rust
26 lines
434 B
Rust
//@ run-pass
|
|
// Test that we are able to infer a suitable kind for this closure
|
|
// that is just called (`FnOnce`).
|
|
|
|
use std::mem;
|
|
|
|
struct DropMe<'a>(&'a mut i32);
|
|
|
|
impl<'a> Drop for DropMe<'a> {
|
|
fn drop(&mut self) {
|
|
*self.0 += 1;
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let mut counter = 0;
|
|
|
|
{
|
|
let drop_me = DropMe(&mut counter);
|
|
let tick = || mem::drop(drop_me);
|
|
tick();
|
|
}
|
|
|
|
assert_eq!(counter, 1);
|
|
}
|