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34 lines
542 B
Rust
34 lines
542 B
Rust
// run-pass
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#![allow(non_camel_case_types)]
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use std::cell::Cell;
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#[derive(Debug)]
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struct r<'a> {
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i: &'a Cell<isize>,
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}
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impl<'a> Drop for r<'a> {
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fn drop(&mut self) {
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self.i.set(self.i.get() + 1);
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}
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}
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fn r(i: &Cell<isize>) -> r {
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r {
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i: i
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}
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}
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pub fn main() {
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let i = &Cell::new(0);
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// Even though these look like copies, they are guaranteed not to be
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{
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let a = r(i);
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let b = (a, 10);
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let (c, _d) = b;
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println!("{:?}", c);
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}
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assert_eq!(i.get(), 1);
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}
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