39 lines
1007 B
Rust
39 lines
1007 B
Rust
// We want to control preemption here.
|
|
//@compile-flags: -Zmiri-preemption-rate=0
|
|
//@ignore-windows: Concurrency on Windows is not supported yet.
|
|
|
|
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" {
|
|
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 || {
|
|
*ptr.0 = 2;
|
|
});
|
|
|
|
let j2 = spawn(move || {
|
|
__rust_dealloc(
|
|
//~^ ERROR Data race detected between Deallocate on thread `<unnamed>` and Write on thread `<unnamed>`
|
|
ptr.0 as *mut _,
|
|
std::mem::size_of::<usize>(),
|
|
std::mem::align_of::<usize>(),
|
|
);
|
|
});
|
|
|
|
j1.join().unwrap();
|
|
j2.join().unwrap();
|
|
}
|
|
}
|