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1 | // Copyright 2013 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 | // Issue #5041 - avoid overlapping memcpy when src and dest of a swap are the same | |
12 | ||
c34b1796 AL |
13 | // pretty-expanded FIXME #23616 |
14 | ||
970d7e83 | 15 | use std::ptr; |
970d7e83 | 16 | |
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17 | pub fn main() { |
18 | let mut test = TestDescAndFn { | |
19 | desc: TestDesc { | |
1a4d82fc | 20 | name: TestName::DynTestName("test".to_string()), |
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21 | should_fail: false |
22 | }, | |
1a4d82fc | 23 | testfn: TestFn::DynTestFn(22), |
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24 | }; |
25 | do_swap(&mut test); | |
26 | } | |
27 | ||
28 | fn do_swap(test: &mut TestDescAndFn) { | |
970d7e83 | 29 | unsafe { |
1a4d82fc | 30 | ptr::swap(test, test); |
970d7e83 | 31 | } |
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32 | } |
33 | ||
34 | pub enum TestName { | |
1a4d82fc | 35 | DynTestName(String) |
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36 | } |
37 | ||
38 | pub enum TestFn { | |
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39 | DynTestFn(isize), |
40 | DynBenchFn(isize), | |
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41 | } |
42 | ||
43 | pub struct TestDesc { | |
44 | name: TestName, | |
45 | should_fail: bool | |
46 | } | |
47 | ||
48 | pub struct TestDescAndFn { | |
49 | desc: TestDesc, | |
50 | testfn: TestFn, | |
51 | } |