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// check-pass
// rust-lang/rust#68590: confusing diagnostics when reborrowing through DerefMut.
use std::cell::RefCell;
struct A;
struct S<'a> {
a: &'a mut A,
}
fn take_a(_: &mut A) {}
fn test<'a>(s: &RefCell<S<'a>>) {
let mut guard = s.borrow_mut();
take_a(guard.a);
let _s2 = S { a: guard.a };
}
fn main() {
let a = &mut A;
let s = RefCell::new(S { a });
test(&s);
}
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