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1 | // Copyright 2014 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 | ||
11 | // Test that we correctly compute the move fragments for a fn. | |
12 | // | |
13 | // Note that the code below is not actually incorrect; the | |
14 | // `rustc_move_fragments` attribute is a hack that uses the error | |
15 | // reporting mechanisms as a channel for communicating from the | |
16 | // internals of the compiler. | |
17 | ||
18 | // Test that moving into a field (i.e. overwriting it) fragments the | |
19 | // receiver. | |
20 | ||
85aaf69f SL |
21 | #![feature(rustc_attrs)] |
22 | ||
1a4d82fc JJ |
23 | use std::mem::drop; |
24 | ||
25 | pub struct Pair<X,Y> { x: X, y: Y } | |
26 | ||
27 | #[rustc_move_fragments] | |
28 | pub fn test_overwrite_uninit_field<Z>(z: Z) { | |
29 | //~^ ERROR parent_of_fragments: `$(local mut p)` | |
30 | //~| ERROR assigned_leaf_path: `$(local z)` | |
31 | //~| ERROR moved_leaf_path: `$(local z)` | |
32 | //~| ERROR assigned_leaf_path: `$(local mut p).x` | |
33 | //~| ERROR unmoved_fragment: `$(local mut p).y` | |
34 | ||
35 | let mut p: Pair<Z,Z>; | |
36 | p.x = z; | |
37 | } | |
38 | ||
39 | #[rustc_move_fragments] | |
40 | pub fn test_overwrite_moved_field<Z>(mut p: Pair<Z,Z>, z: Z) { | |
41 | //~^ ERROR parent_of_fragments: `$(local mut p)` | |
42 | //~| ERROR assigned_leaf_path: `$(local z)` | |
43 | //~| ERROR moved_leaf_path: `$(local z)` | |
44 | //~| ERROR assigned_leaf_path: `$(local mut p).y` | |
45 | //~| ERROR unmoved_fragment: `$(local mut p).x` | |
46 | ||
47 | drop(p); | |
48 | p.y = z; | |
49 | } | |
50 | ||
51 | #[rustc_move_fragments] | |
52 | pub fn test_overwrite_same_field<Z>(mut p: Pair<Z,Z>) { | |
53 | //~^ ERROR parent_of_fragments: `$(local mut p)` | |
54 | //~| ERROR moved_leaf_path: `$(local mut p).x` | |
55 | //~| ERROR assigned_leaf_path: `$(local mut p).x` | |
56 | //~| ERROR unmoved_fragment: `$(local mut p).y` | |
57 | ||
58 | p.x = p.x; | |
59 | } | |
60 | ||
61 | pub fn main() { } |