55 lines
1007 B
Rust
55 lines
1007 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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struct Rec {
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f: ~int,
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}
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struct Outer {
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f: Inner
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}
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struct Inner {
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g: Innermost
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}
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struct Innermost {
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h: ~int,
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}
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fn borrow(_v: &int) {}
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fn box_mut(v: &mut ~int) {
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borrow(*v); // OK: &mut -> &imm
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}
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fn box_mut_rec(v: &mut Rec) {
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borrow(v.f); // OK: &mut -> &imm
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}
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fn box_mut_recs(v: &mut Outer) {
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borrow(v.f.g.h); // OK: &mut -> &imm
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}
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fn box_imm(v: &~int) {
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borrow(*v); // OK
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}
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fn box_imm_rec(v: &Rec) {
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borrow(v.f); // OK
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}
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fn box_imm_recs(v: &Outer) {
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borrow(v.f.g.h); // OK
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}
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fn main() {
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}
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