mirror of https://github.com/rust-lang/rust
38 lines
627 B
Rust
38 lines
627 B
Rust
//@ run-pass
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#![allow(non_camel_case_types)]
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// Ensures that class dtors run if the object is inside an enum
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// variant
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use std::cell::Cell;
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type closable<'a> = &'a Cell<bool>;
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struct close_res<'a> {
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i: closable<'a>,
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}
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impl<'a> Drop for close_res<'a> {
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fn drop(&mut self) {
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self.i.set(false);
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}
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}
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fn close_res(i: closable) -> close_res {
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close_res {
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i: i
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}
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}
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enum option<T> { none, some(#[allow(dead_code)] T), }
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fn sink(_res: option<close_res>) { }
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pub fn main() {
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let c = &Cell::new(true);
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sink(option::none);
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sink(option::some(close_res(c)));
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assert!(!c.get());
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}
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