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