rust/tests/fail/concurrency/read_only_atomic_cmpxchg.rs

12 lines
419 B
Rust

// Should not rely on the aliasing model for its failure.
//@compile-flags: -Zmiri-disable-stacked-borrows
use std::sync::atomic::{AtomicI32, Ordering};
fn main() {
static X: i32 = 0;
let x = &X as *const i32 as *const AtomicI32;
let x = unsafe { &*x };
x.compare_exchange(1, 2, Ordering::Relaxed, Ordering::Relaxed).unwrap_err(); //~ERROR: atomic operations cannot be performed on read-only memory
}