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// 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.
// Here we check that it is allowed to lend out an element of a
// (locally rooted) mutable, unique vector, and that we then prevent
// modifications to the contents.
fn takes_imm_elt(_v: &int, f: fn()) {
f();
}
fn has_mut_vec_and_does_not_try_to_change_it() {
let v = ~[mut 1, 2, 3];
do takes_imm_elt(&v[0]) {
}
}
fn has_mut_vec_but_tries_to_change_it() {
let v = ~[mut 1, 2, 3];
do takes_imm_elt(&v[0]) { //~ NOTE loan of mutable vec content granted here
v[1] = 4; //~ ERROR assigning to mutable vec content prohibited due to outstanding loan
}
}
fn takes_const_elt(_v: &const int, f: fn()) {
f();
}
fn has_mut_vec_and_tries_to_change_it() {
let v = ~[mut 1, 2, 3];
do takes_const_elt(&const v[0]) {
v[1] = 4;
}
}
fn main() {
}
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