1 /// Fast hash map used internally.
2 type FastHashMap<K, V> =
3     std::collections::HashMap<K, V, std::hash::BuildHasherDefault<std::collections::hash_map::DefaultHasher>>;
4 
5 pub type Foo = FastHashMap<i32, i32>;
6 
7 pub type Bar = Result<Foo, ()>;
8 
9 #[no_mangle]
root(a: &Foo, b: &Bar)10 pub extern "C" fn root(a: &Foo, b: &Bar) {}
11