let my_var: Arc<str> = Default::default();
    assert_eq!(my_var, Arc::from(""));

error[E0277]: the trait bound `str: Default` is not satisfied
 --> src/main.rs:4:28
  |
4 |     let my_var: Arc<str> = Default::default();
  |                            ^^^^^^^^^^^^^^^^^^ the trait `Default` is not implemented for `str`, which is required by `Arc<str>: Default`
  |
  = help: the following other types implement trait `Default`:
            &str
            &mut str
  = note: required for `Arc<str>` to implement `Default`

For more information about this error, try `rustc --explain E0277`.

#[cfg(not(no_global_oom_handling))]
impl Default for Arc<str> {
    /// Creates an empty str inside an Arc
    #[inline]
    fn default() -> Self {
        Arc::from("")
    }
}