use std::ffi::{CStr, FromBytesWithNulError};
use std::os::raw::c_char;

fn main() { unsafe {
    let strings: Vec<String> = vec!["foo\0".to_string(), "bar\0".to_string()];

    let result: Result<Vec<*const c_char>, FromBytesWithNulError> =
        strings.iter()
        .map(|s: &String|
            CStr::from_bytes_with_nul(s.as_bytes())
            .map(CStr::as_ptr))
        .collect();

    let result: Vec<*const c_char> = result.unwrap();

    let result: &[*const c_char] = &*result;

    let result: *const *const c_char = result.as_ptr();

    println!("{:?}", result);

    let num_strings = strings.len();
    let mut current = result;

    for _ in 0..num_strings {
        println!("{:?}", CStr::from_ptr(*current));
        current = current.offset(1);
    }

} }