25 lines
799 B
Rust
25 lines
799 B
Rust
// 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 want_slice(v: &[int]) -> int {
|
|
let mut sum = 0;
|
|
for vec::each(v) |i| { sum += *i; }
|
|
return sum;
|
|
}
|
|
|
|
fn has_mut_vec(+v: @~[mut int]) -> int {
|
|
want_slice(*v) //~ ERROR illegal borrow unless pure
|
|
//~^ NOTE impure due to access to impure function
|
|
}
|
|
|
|
fn main() {
|
|
assert has_mut_vec(@~[mut 1, 2, 3]) == 6;
|
|
}
|