error[E0599]: no method named `map` found for reference `&'static [i32]` in the current scope
  --> $DIR/issue-94581.rs:7:35
   |
LL |     let _sqsum: i32 = get_slice().map(|i| i * i).sum();
   |                                   ^^^ `&'static [i32]` is not an iterator
   |
help: call `.into_iter()` first
   |
LL |     let _sqsum: i32 = get_slice().into_iter().map(|i| i * i).sum();
   |                                   ++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.