// run-pass #![feature(lang_items)] fn a isize>(f: F) -> isize { f(1, 2) } fn b isize>(mut f: F) -> isize { f(3, 4) } fn c isize>(f: F) -> isize { f(5, 6) } fn main() { let z: isize = 7; assert_eq!(a(move |x: isize, y| x + y + z), 10); assert_eq!(b(move |x: isize, y| x + y + z), 14); assert_eq!(c(move |x: isize, y| x + y + z), 18); }