#![feature(slice_patterns)] | |
fn a<'a>() -> &'a isize { | |
let vec = vec![1, 2, 3, 4]; | |
let vec: &[isize] = &vec; | |
let tail = match vec { | |
&[_a, ref tail @ ..] => &tail[0], | |
_ => panic!("foo") | |
}; | |
tail //~ ERROR cannot return value referencing local variable `vec` | |
} | |
fn main() { | |
let fifth = a(); | |
println!("{}", *fifth); | |
} |