| //@ignore-target-windows: No pthreads 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(); |
| } |
| } |