rust/src/test/compile-fail/borrowck-uniq-via-ref.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 box_mut(v: &mut ~int) {
    borrow(*v); // OK: &mut -> &imm
}

fn box_mut_rec(v: &mut {f: ~int}) {
    borrow(v.f); // OK: &mut -> &imm
}

fn box_mut_recs(v: &mut {f: {g: {h: ~int}}}) {
    borrow(v.f.g.h); // OK: &mut -> &imm
}

fn box_imm(v: &~int) {
    borrow(*v); // OK
}

fn box_imm_rec(v: &{f: ~int}) {
    borrow(v.f); // OK
}

fn box_imm_recs(v: &{f: {g: {h: ~int}}}) {
    borrow(v.f.g.h); // OK
}

fn box_const(v: &const ~int) {
    borrow(*v); //~ ERROR illegal borrow unless pure
}

fn box_const_rec(v: &const {f: ~int}) {
    borrow(v.f); //~ ERROR illegal borrow unless pure
}

fn box_const_recs(v: &const {f: {g: {h: ~int}}}) {
    borrow(v.f.g.h); //~ ERROR illegal borrow unless pure
}

fn main() {
}