mirror of https://github.com/rust-lang/rust
37 lines
668 B
Rust
37 lines
668 B
Rust
//@ run-pass
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#![allow(unused_variables)]
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#![allow(non_upper_case_globals)]
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// Test that destructor on a struct runs successfully after the struct
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// is boxed and converted to an object.
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static mut value: usize = 0;
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struct Cat {
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name : usize,
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}
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trait Dummy {
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fn get(&self) -> usize; //~ WARN method `get` is never used
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}
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impl Dummy for Cat {
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fn get(&self) -> usize { self.name }
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}
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impl Drop for Cat {
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fn drop(&mut self) {
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unsafe { value = self.name; }
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}
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}
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pub fn main() {
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{
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let x = Box::new(Cat {name: 22});
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let nyan: Box<dyn Dummy> = x as Box<dyn Dummy>;
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}
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unsafe {
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assert_eq!(value, 22);
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}
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}
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