rust/tests/fail/fs/unix_open_missing_required_mode.rs

// ignore-windows: No libc on Windows
// compile-flags: -Zmiri-disable-isolation

#![feature(rustc_private)]

extern crate libc;

fn main() {
    test_file_open_missing_needed_mode();
}

fn test_file_open_missing_needed_mode() {
    let name = b"missing_arg.txt\0";
    let name_ptr = name.as_ptr().cast::<libc::c_char>();
    let _fd = unsafe { libc::open(name_ptr, libc::O_CREAT) }; //~ ERROR Undefined Behavior: incorrect number of arguments for `open` with `O_CREAT`: got 2, expected at least 3
}