17 lines
325 B
Rust
17 lines
325 B
Rust
struct Wrapper<'a, T: ?Sized>(&'a mut i32, T);
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impl<'a, T: ?Sized> Drop for Wrapper<'a, T> {
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fn drop(&mut self) {
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*self.0 = 432;
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}
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}
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fn main() {
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let mut x = 0;
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{
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let wrapper = Box::new(Wrapper(&mut x, 123));
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let _val: Box<Wrapper<dyn Send>> = wrapper;
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}
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assert_eq!(432, x)
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}
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