// Make sure that a mutable reference cannot be created while // there a reference to an element of an iterator created with `Iterator::last` use dyn_slice::standard::borrow; fn main() { let mut array_1 = [1, 2, 3, 4, 5]; let mut slice_1 = borrow::new_mut(&mut array_1); let iter_1 = slice_1.iter(); let last = iter_1.last().unwrap(); let _ = slice_1.get_mut(0).unwrap().borrow(); let _ = last.borrow(); }