rust/src/test/compile-fail/borrowck-lend-args.rs

// Copyright 2012 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 borrow(_v: &int) {}

fn borrow_from_arg_imm_ref(&&v: ~int) {
    borrow(v);
}

fn borrow_from_arg_mut_ref(v: &mut ~int) {
    borrow(*v); //~ ERROR illegal borrow unless pure
    //~^ NOTE impure due to access to impure function
}

fn borrow_from_arg_move(-v: ~int) {
    borrow(v);
}

fn borrow_from_arg_copy(+v: ~int) {
    borrow(v);
}

fn borrow_from_arg_val(++v: ~int) {
    borrow(v);
}

fn main() {
}