25 lines
413 B
Rust
25 lines
413 B
Rust
|
iface deref {
|
||
|
|
fn get() -> int;
|
||
|
|
}
|
||
|
|
|
||
|
|
impl of deref for &int {
|
||
|
|
fn get() -> int {
|
||
|
|
*self
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn with<R: deref>(f: fn(x: &int) -> R) -> int {
|
||
|
|
f(&3).get()
|
||
|
|
}
|
||
|
|
|
||
|
|
fn return_it() -> int {
|
||
|
|
with(|o| o)
|
||
|
|
//~^ ERROR reference is not valid outside of its lifetime, &
|
||
|
|
//~^^ ERROR reference is not valid outside of its lifetime, &
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let x = return_it();
|
||
|
|
#debug["foo=%d", x];
|
||
|
|
}
|