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// We want to control preemption here. Stacked borrows interferes by having its own accesses.
//@compile-flags: -Zmiri-preemption-rate=0 -Zmiri-disable-stacked-borrows
use std::mem;
use std::thread::{sleep, spawn};
use std::time::Duration;
#[derive(Copy, Clone)]
struct EvilSend<T>(pub T);
unsafe impl<T> Send for EvilSend<T> {}
unsafe impl<T> Sync for EvilSend<T> {}
fn main() {
let mut a = 0u32;
let b = &mut a as *mut u32;
let c = EvilSend(b);
let join = unsafe {
spawn(move || {
let c = c; // avoid field capturing
*c.0 = 32;
})
};
// Detach the thread and sleep until it terminates
mem::drop(join);
sleep(Duration::from_millis(200));
// Spawn and immediately join a thread
// to execute the join code-path
// and ensure that data-race detection
// remains enabled nevertheless.
spawn(|| ()).join().unwrap();
unsafe {
*c.0 = 64; //~ ERROR: Data race detected between (1) Write on thread `<unnamed>` and (2) Write on thread `main`
}
}
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