30 lines
1.1 KiB
Rust
30 lines
1.1 KiB
Rust
//@ignore-target-windows: No libc on Windows
|
|
|
|
// Joining the same thread from multiple threads is undefined behavior.
|
|
|
|
use std::thread;
|
|
use std::{mem, ptr};
|
|
|
|
extern "C" fn thread_start(_null: *mut libc::c_void) -> *mut libc::c_void {
|
|
// Yield the thread several times so that other threads can join it.
|
|
thread::yield_now();
|
|
thread::yield_now();
|
|
ptr::null_mut()
|
|
}
|
|
|
|
fn main() {
|
|
unsafe {
|
|
let mut native: libc::pthread_t = mem::zeroed();
|
|
let attr: libc::pthread_attr_t = mem::zeroed();
|
|
// assert_eq!(libc::pthread_attr_init(&mut attr), 0); FIXME: this function is not yet implemented.
|
|
assert_eq!(libc::pthread_create(&mut native, &attr, thread_start, ptr::null_mut()), 0);
|
|
let mut native_copy: libc::pthread_t = mem::zeroed();
|
|
ptr::copy_nonoverlapping(&native, &mut native_copy, 1);
|
|
let handle = thread::spawn(move || {
|
|
assert_eq!(libc::pthread_join(native_copy, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join an already joined thread
|
|
});
|
|
assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
|
|
handle.join().unwrap();
|
|
}
|
|
}
|