labast/test/native_test.rs

// Build with
// rustc --crate-type cdylib native_test.rs -o native_test.so
// or
// rustc --crate-type cdylib native_test.rs -o native_test.dll

#[no_mangle]
unsafe extern "C" fn labashka(pop: extern fn() -> u16, push: extern fn(u16), len: extern fn () -> usize, max: usize) {
    println!("At {}, there's {}.", len(), pop());
    push(12);
    println!("Maximum size is {}.", max);
}