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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.
struct Point {
x: int,
y: int,
}
fn a() {
let mut p = ~[1];
// Create an immutable pointer into p's contents:
let _q: &int = &p[0]; //~ NOTE loan of mutable vec content granted here
p[0] = 5; //~ ERROR assigning to mutable vec content prohibited due to outstanding loan
}
fn borrow(_x: &[int], _f: &fn()) {}
fn b() {
// here we alias the mutable vector into an imm slice and try to
// modify the original:
let mut p = ~[1];
do borrow(p) { //~ NOTE loan of mutable vec content granted here
p[0] = 5; //~ ERROR assigning to mutable vec content prohibited due to outstanding loan
}
}
fn c() {
// Legal because the scope of the borrow does not include the
// modification:
let mut p = ~[1];
borrow(p, ||{});
p[0] = 5;
}
fn main() {
}
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