openai/codex · error

failed to convert argv to CString: {err}

Error message

failed to convert argv to CString: {err}

What it means

Error "failed to convert argv to CString: {err}" thrown in openai/codex.

Source

Thrown at codex-rs/bwrap/src/main.rs:15

#[cfg(all(target_os = "linux", bwrap_available))]
fn main() {
    use std::ffi::CStr;
    use std::ffi::CString;
    use std::os::raw::c_char;
    use std::os::unix::ffi::OsStrExt;

    unsafe extern "C" {
        fn bwrap_main(argc: libc::c_int, argv: *const *const c_char) -> libc::c_int;
    }

    let cstrings = std::env::args_os()
        .map(|arg| {
            CString::new(arg.as_os_str().as_bytes())
                .unwrap_or_else(|err| panic!("failed to convert argv to CString: {err}"))
        })
        .collect::<Vec<_>>();
    let mut argv_ptrs = cstrings
        .iter()
        .map(CString::as_c_str)
        .map(CStr::as_ptr)
        .collect::<Vec<*const c_char>>();
    argv_ptrs.push(std::ptr::null());

    // SAFETY: We provide a null-terminated argv vector whose pointers remain
    // valid for the duration of the call.
    let exit_code = unsafe { bwrap_main(cstrings.len() as libc::c_int, argv_ptrs.as_ptr()) };
    std::process::exit(exit_code);
}

#[cfg(all(target_os = "linux", not(bwrap_available)))]
fn main() {
    panic!(

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/bwrap/src/main.rs:15 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/4937542b324921e7. Report an issue: GitHub.