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1 | // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
1a4d82fc | 11 | |
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12 | // pretty-expanded FIXME #23616 |
13 | ||
223e47cc | 14 | struct Rec { |
c34b1796 | 15 | f: Box<isize>, |
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16 | } |
17 | ||
18 | struct Outer { | |
19 | f: Inner | |
20 | } | |
21 | ||
22 | struct Inner { | |
23 | g: Innermost | |
24 | } | |
25 | ||
26 | struct Innermost { | |
c34b1796 | 27 | h: Box<isize>, |
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28 | } |
29 | ||
c34b1796 | 30 | fn borrow(_v: &isize) {} |
223e47cc | 31 | |
c34b1796 | 32 | fn box_mut(v: &mut Box<isize>) { |
1a4d82fc | 33 | borrow(&**v); // OK: &mut -> &imm |
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34 | } |
35 | ||
36 | fn box_mut_rec(v: &mut Rec) { | |
1a4d82fc | 37 | borrow(&*v.f); // OK: &mut -> &imm |
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38 | } |
39 | ||
40 | fn box_mut_recs(v: &mut Outer) { | |
1a4d82fc | 41 | borrow(&*v.f.g.h); // OK: &mut -> &imm |
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42 | } |
43 | ||
c34b1796 | 44 | fn box_imm(v: &Box<isize>) { |
1a4d82fc | 45 | borrow(&**v); // OK |
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46 | } |
47 | ||
48 | fn box_imm_rec(v: &Rec) { | |
1a4d82fc | 49 | borrow(&*v.f); // OK |
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50 | } |
51 | ||
52 | fn box_imm_recs(v: &Outer) { | |
1a4d82fc | 53 | borrow(&*v.f.g.h); // OK |
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54 | } |
55 | ||
1a4d82fc | 56 | pub fn main() { |
223e47cc | 57 | } |