openai/codex · error

runner: no pipe-out provided

Error message

runner: no pipe-out provided

What it means

Error "runner: no pipe-out provided" thrown in openai/codex.

Source

Thrown at codex-rs/windows-sandbox-rs/src/bin/command_runner/win.rs:554

}

/// Entry point for the Windows command runner process.
pub fn main() -> Result<()> {
    let mut pipe_in = None;
    let mut pipe_out = None;
    for arg in std::env::args().skip(1) {
        if let Some(rest) = arg.strip_prefix("--pipe-in=") {
            pipe_in = Some(rest.to_string());
        } else if let Some(rest) = arg.strip_prefix("--pipe-out=") {
            pipe_out = Some(rest.to_string());
        }
    }

    let Some(pipe_in) = pipe_in else {
        anyhow::bail!("runner: no pipe-in provided");
    };
    let Some(pipe_out) = pipe_out else {
        anyhow::bail!("runner: no pipe-out provided");
    };

    // Open both pipe ends under guards first so a failure on the second open cannot leak the
    // first HANDLE. Only after both opens succeed do we transfer ownership into `File`, which
    // then becomes responsible for closing them.
    let h_pipe_in = OwnedWinHandle::new(open_pipe(&pipe_in, FILE_GENERIC_READ)?);
    let h_pipe_out = OwnedWinHandle::new(open_pipe(&pipe_out, FILE_GENERIC_WRITE)?);
    let mut pipe_read = unsafe { File::from_raw_handle(h_pipe_in.into_raw() as _) };
    let pipe_write = Arc::new(StdMutex::new(unsafe {
        File::from_raw_handle(h_pipe_out.into_raw() as _)
    }));

    let req = match read_spawn_request(&mut pipe_read) {
        Ok(v) => v,
        Err(err) => {
            let _ = send_error(
                &pipe_write,
                ErrorStage::ReadSpawnRequest,

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/windows-sandbox-rs/src/bin/command_runner/win.rs:554 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/5a93bfa7945cb5d2. Report an issue: GitHub.