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