rust/tests/ui/mir/mir_dynamic_drops_2.rs

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