rust/src/test/compile-fail/borrowck-vec-pattern-tail-element-loan.rs
Patrick Walton eb678ff87f librustc: Change the syntax of subslice matching to use postfix ..
instead of prefix `..`.

This breaks code that looked like:

    match foo {
        [ first, ..middle, last ] => { ... }
    }

Change this code to:

    match foo {
        [ first, middle.., last ] => { ... }
    }

RFC #55.

Closes #16967.

[breaking-change]
2014-09-08 16:12:13 -07:00

25 lines
772 B
Rust

// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
fn a<'a>() -> &'a int {
let vec = vec!(1, 2, 3, 4);
let vec: &[int] = vec.as_slice(); //~ ERROR `vec` does not live long enough
let tail = match vec {
[_a, tail..] => &tail[0],
_ => fail!("foo")
};
tail
}
fn main() {
let fifth = a();
println!("{}", *fifth);
}