// check that we link regions in mutable place ops correctly - issue #41774 struct Data(i32); trait OhNo { fn oh_no(&mut self, other: &Vec) { loop {} } } impl OhNo for Data {} impl OhNo for [Data] {} fn main() { let mut v = vec![Data(0)]; v[0].oh_no(&v); //~ ERROR cannot borrow `v` as immutable because (*v).oh_no(&v); //~ ERROR cannot borrow `v` as immutable because }