rust/src/test/ui/run-pass/issues/issue-17068.rs

// 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.

// Test that regionck creates the right region links in the pattern
// binding of a for loop

fn foo<'a>(v: &'a [usize]) -> &'a usize {
    for &ref x in v { return x; }
    unreachable!()
}

fn main() {
    assert_eq!(foo(&[0]), &0);
}