src/tools/rustfmt/tests/source/non-lifetime-binders.rs

fn main() where for<'a, T: Sized + 'a, const C: usize> [&'a T; C]: Sized { 
    let x = for<T> 
    || {};

    let y: dyn 
    for<T> Into<T>;
    
    let z: for<T> 
    fn(T);
}