| // 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. |
| |
| #![feature(box_syntax)] |
| |
| fn borrow(_v: &isize) {} |
| |
| fn local() { |
| let mut v: Box<_> = box 3; |
| borrow(&*v); |
| } |
| |
| fn local_rec() { |
| struct F { f: Box<isize> } |
| let mut v = F {f: box 3}; |
| borrow(&*v.f); |
| } |
| |
| fn local_recs() { |
| struct F { f: G } |
| struct G { g: H } |
| struct H { h: Box<isize> } |
| let mut v = F {f: G {g: H {h: box 3}}}; |
| borrow(&*v.f.g.h); |
| } |
| |
| fn aliased_imm() { |
| let mut v: Box<_> = box 3; |
| let _w = &v; |
| borrow(&*v); |
| } |
| |
| fn aliased_mut() { |
| let mut v: Box<_> = box 3; |
| let _w = &mut v; |
| borrow(&*v); //~ ERROR cannot borrow `*v` |
| } |
| |
| fn aliased_other() { |
| let mut v: Box<_> = box 3; |
| let mut w: Box<_> = box 4; |
| let _x = &mut w; |
| borrow(&*v); |
| } |
| |
| fn aliased_other_reassign() { |
| let mut v: Box<_> = box 3; |
| let mut w: Box<_> = box 4; |
| let mut _x = &mut w; |
| _x = &mut v; |
| borrow(&*v); //~ ERROR cannot borrow `*v` |
| } |
| |
| fn main() { |
| } |