rust/src/test/run-pass/rfcs/rfc-1014.rs

// run-pass
#![allow(dead_code)]
// ignore-cloudabi stdout does not map to file descriptor 1 by default
// ignore-wasm32-bare no libc

#![feature(rustc_private)]

extern crate libc;

type DWORD = u32;
type HANDLE = *mut u8;

#[cfg(windows)]
extern "system" {
    fn GetStdHandle(which: DWORD) -> HANDLE;
    fn CloseHandle(handle: HANDLE) -> i32;
}

#[cfg(windows)]
fn close_stdout() {
    const STD_OUTPUT_HANDLE: DWORD = -11i32 as DWORD;
    unsafe { CloseHandle(GetStdHandle(STD_OUTPUT_HANDLE)); }
}

#[cfg(not(windows))]
fn close_stdout() {
    unsafe { libc::close(1); }
}

fn main() {
    close_stdout();
    println!("hello world");
}