mirror of https://github.com/rust-lang/rust
30 lines
589 B
Rust
30 lines
589 B
Rust
//@ run-fail
|
|
//@ error-pattern:drop 1
|
|
//@ ignore-emscripten no processes
|
|
|
|
/// Structure which will not allow to be dropped twice.
|
|
struct Droppable<'a>(&'a mut bool, u32);
|
|
impl<'a> Drop for Droppable<'a> {
|
|
fn drop(&mut self) {
|
|
if *self.0 {
|
|
eprintln!("{} dropped twice", self.1);
|
|
::std::process::exit(1);
|
|
}
|
|
eprintln!("drop {}", self.1);
|
|
*self.0 = true;
|
|
}
|
|
}
|
|
|
|
fn mir<'a>(d: Droppable<'a>) {
|
|
loop {
|
|
let x = d;
|
|
break;
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let mut xv = false;
|
|
mir(Droppable(&mut xv, 1));
|
|
panic!();
|
|
}
|