File: lint-invalid-atomic-ordering-ptr.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (30 lines) | stat: -rw-r--r-- 1,005 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
//@ only-x86_64
use std::sync::atomic::{AtomicPtr, Ordering};

fn main() {
    let ptr = &mut 5;
    let other_ptr = &mut 10;
    let x = AtomicPtr::new(ptr);

    // Allowed load ordering modes
    let _ = x.load(Ordering::Acquire);
    let _ = x.load(Ordering::SeqCst);
    let _ = x.load(Ordering::Relaxed);

    // Disallowed load ordering modes
    let _ = x.load(Ordering::Release);
    //~^ ERROR atomic loads cannot have `Release` or `AcqRel` ordering
    let _ = x.load(Ordering::AcqRel);
    //~^ ERROR atomic loads cannot have `Release` or `AcqRel` ordering

    // Allowed store ordering modes
    x.store(other_ptr, Ordering::Release);
    x.store(other_ptr, Ordering::SeqCst);
    x.store(other_ptr, Ordering::Relaxed);

    // Disallowed store ordering modes
    x.store(other_ptr, Ordering::Acquire);
    //~^ ERROR atomic stores cannot have `Acquire` or `AcqRel` ordering
    x.store(other_ptr, Ordering::AcqRel);
    //~^ ERROR atomic stores cannot have `Acquire` or `AcqRel` ordering
}