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// run-pass
use std::cell::RefCell;
struct S<'a>(i32, &'a RefCell<Vec<i32>>);
impl<'a> Drop for S<'a> {
fn drop(&mut self) {
self.1.borrow_mut().push(self.0);
}
}
fn test(drops: &RefCell<Vec<i32>>) {
let mut foo = None;
let pfoo: *mut _ = &mut foo;
match foo {
None => (),
_ => return,
}
// Both S(0) and S(1) should be dropped, but aren't.
unsafe { *pfoo = Some((S(0, drops), S(1, drops))); }
match foo {
Some((_x, _)) => {}
_ => {}
}
}
fn main() {
let drops = RefCell::new(Vec::new());
test(&drops);
// Ideally, we want this...
//assert_eq!(*drops.borrow(), &[0, 1]);
// But the delayed access through the raw pointer confuses drop elaboration,
// causing S(1) to be leaked.
assert_eq!(*drops.borrow(), &[0]);
}
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