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// We want to control preemption here. Stacked borrows interferes by having its own accesses.
//@compile-flags: -Zmiri-deterministic-concurrency -Zmiri-disable-stacked-borrows
#![feature(rustc_attrs)]
use std::thread::spawn;
#[derive(Copy, Clone)]
struct EvilSend<T>(pub T);
unsafe impl<T> Send for EvilSend<T> {}
unsafe impl<T> Sync for EvilSend<T> {}
extern "Rust" {
#[rustc_std_internal_symbol]
fn __rust_dealloc(ptr: *mut u8, size: usize, align: usize);
}
pub fn main() {
// Shared atomic pointer
let pointer: *mut usize = Box::into_raw(Box::new(0usize));
let ptr = EvilSend(pointer);
unsafe {
let j1 = spawn(move || {
let ptr = ptr; // avoid field capturing
*ptr.0 = 2;
});
let j2 = spawn(move || {
let ptr = ptr; // avoid field capturing
__rust_dealloc(
//~^ ERROR: Data race detected between (1) non-atomic write on thread `unnamed-1` and (2) deallocation on thread `unnamed-2`
ptr.0 as *mut _,
std::mem::size_of::<usize>(),
std::mem::align_of::<usize>(),
);
});
j1.join().unwrap();
j2.join().unwrap();
}
}
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