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// run-pass
use std::mem;
static mut DROP_COUNT: usize = 0;
struct Fragment;
impl Drop for Fragment {
fn drop(&mut self) {
unsafe {
DROP_COUNT += 1;
}
}
}
fn main() {
{
let mut fragments = vec![Fragment, Fragment, Fragment];
let _new_fragments: Vec<Fragment> = mem::replace(&mut fragments, vec![])
.into_iter()
.skip_while(|_fragment| {
true
}).collect();
}
unsafe {
assert_eq!(DROP_COUNT, 3);
}
}
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