Function handle_from_fd

crates/vm/src/stdlib/_io.rs:6019–6021

(fd: i32)

    const BUFMAX: usize = 32 * 1024 * 1024;

    fn handle_from_fd(fd: i32) -> HANDLE {
        unsafe { rustpython_common::suppress_iph!(libc::get_osfhandle(fd)) as HANDLE }
    }

    fn is_invalid_handle(handle: HANDLE) -> bool {
        handle == INVALID_HANDLE_VALUE || handle.is_null()