| //@ check-pass | |
| #![allow(unused_variables)] | |
| use std::collections::HashMap; | |
| use std::collections::hash_map::Entry::Vacant; | |
| pub fn foo() { | |
| type F = Box<dyn Fn(&()) + 'static>; | |
| let mut map: HashMap<(), F> = HashMap::new(); | |
| let x: &mut F = match map.entry(()) { | |
| Vacant(_) => unimplemented!(), | |
| _ => unimplemented!() | |
| }; | |
| } | |
| fn main() {} |