rust/tests/ui/auxiliary/issue-16822.rs

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#![crate_type="lib"]
use std::cell::RefCell;
pub struct Window<Data>{
pub data: RefCell<Data>
}
impl<Data: Update> Window<Data> {
pub fn update(&self, e: i32) {
match e {
1 => self.data.borrow_mut().update(),
_ => {}
}
}
}
pub trait Update {
fn update(&mut self);
}