nc 0.9.8

Access system calls directly
Documentation 
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/// Exit all threads in a process's thread group.
///
/// # Examples
///
/// ```
/// unsafe { nc::exit_group(0); }
/// ```
pub unsafe fn exit_group(status: i32) -> ! {
    let status = status as usize;
    unsafe {
        let _ret = syscall1(SYS_EXIT_GROUP, status);
        core::hint::unreachable_unchecked();
    }
}