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1 | // Copyright 2015 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 | // Checks that struct-literal expression order-of-eval is as expected | |
12 | // even when no Drop-implementations are involved. | |
13 | ||
62682a34 | 14 | #![feature(const_fn)] |
c34b1796 | 15 | |
62682a34 | 16 | use std::sync::atomic::{Ordering, AtomicUsize}; |
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17 | |
18 | struct W { wrapped: u32 } | |
19 | struct S { f0: W, _f1: i32 } | |
20 | ||
21 | pub fn main() { | |
22 | const VAL: u32 = 0x89AB_CDEF; | |
23 | let w = W { wrapped: VAL }; | |
24 | let s = S { | |
25 | _f1: { event(0x01); 23 }, | |
26 | f0: { event(0x02); w }, | |
27 | }; | |
28 | assert_eq!(s.f0.wrapped, VAL); | |
29 | let actual = event_log(); | |
30 | let expect = 0x01_02; | |
31 | assert!(expect == actual, | |
32 | "expect: 0x{:x} actual: 0x{:x}", expect, actual); | |
33 | } | |
34 | ||
62682a34 | 35 | static LOG: AtomicUsize = AtomicUsize::new(0); |
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36 | |
37 | fn event_log() -> usize { | |
38 | LOG.load(Ordering::SeqCst) | |
39 | } | |
40 | ||
41 | fn event(tag: u8) { | |
42 | let old_log = LOG.load(Ordering::SeqCst); | |
43 | let new_log = (old_log << 8) + tag as usize; | |
44 | LOG.store(new_log, Ordering::SeqCst); | |
45 | } |