openai/codex · error · anyhow::Error

process is not attached to a PTY

Error message

process is not attached to a PTY

What it means

Error "process is not attached to a PTY" thrown in openai/codex.

Source

Thrown at codex-rs/utils/pty/src/process.rs:208

                .lock()
                .map_err(|_| anyhow!("failed to lock PTY handles"))?;
            if let Some(handles) = handles.as_ref() {
                return match &handles._master {
                    PtyMasterHandle::Resizable(master) => master.resize(size.into()),
                    #[cfg(unix)]
                    PtyMasterHandle::Opaque { raw_fd, .. } => resize_raw_pty(*raw_fd, size),
                };
            }
        }

        let mut resizer = self
            .resizer
            .lock()
            .map_err(|_| anyhow!("failed to lock PTY resizer"))?;
        if let Some(resizer) = resizer.as_mut() {
            resizer(size)
        } else {
            Err(anyhow!("process is not attached to a PTY"))
        }
    }

    /// Close the child's stdin channel.
    pub fn close_stdin(&self) {
        if let Ok(mut writer_tx) = self.writer_tx.lock() {
            writer_tx.take();
        }
    }

    /// Attempts to kill the child while leaving the reader/writer tasks alive
    /// so callers can still drain output until EOF.
    pub fn request_terminate(&self) {
        if let Ok(mut killer_opt) = self.killer.lock()
            && let Some(mut killer) = killer_opt.take()
        {
            let _ = killer.kill();
        }

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/utils/pty/src/process.rs:208 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/066e2770648db589. Report an issue: GitHub.