mirror of https://github.com/rust-lang/rust
32 lines
810 B
Rust
32 lines
810 B
Rust
//@ run-pass
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#![allow(unreachable_code)]
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use std::sync::atomic::{AtomicBool, Ordering, AtomicUsize};
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struct Print(usize);
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impl Drop for Print {
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fn drop(&mut self) {
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println!("{}", self.0);
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FOO[self.0].store(true, Ordering::Relaxed);
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assert_eq!(BAR.fetch_sub(1, Ordering::Relaxed), self.0);
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}
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}
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const A: Print = Print(0);
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const B: Print = Print(1);
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static FOO: [AtomicBool; 3] =
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[AtomicBool::new(false), AtomicBool::new(false), AtomicBool::new(false)];
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static BAR: AtomicUsize = AtomicUsize::new(2);
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fn main() {
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loop {
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std::mem::forget(({ A }, B, Print(2), break));
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}
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for (i, b) in FOO.iter().enumerate() {
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assert!(b.load(Ordering::Relaxed), "{} not set", i);
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}
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assert_eq!(BAR.fetch_add(1, Ordering::Relaxed), usize::max_value());
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}
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