openai/codex · error · std::io::Error

process interrupt is not supported by this process backend

Error message

process interrupt is not supported by this process backend

What it means

Error "process interrupt is not supported by this process backend" thrown in openai/codex.

Source

Thrown at codex-rs/utils/pty/src/process.rs:28

use anyhow::anyhow;
use portable_pty::MasterPty;
use portable_pty::PtySize;
use portable_pty::SlavePty;
use tokio::sync::broadcast;
use tokio::sync::mpsc;
use tokio::sync::oneshot;
use tokio::sync::watch;
use tokio::task::AbortHandle;
use tokio::task::JoinHandle;

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum ProcessSignal {
    Interrupt,
}

pub(crate) fn unsupported_signal(signal: ProcessSignal) -> io::Error {
    match signal {
        ProcessSignal::Interrupt => io::Error::new(
            io::ErrorKind::Unsupported,
            "process interrupt is not supported by this process backend",
        ),
    }
}

pub(crate) fn exit_code_from_status(status: ExitStatus) -> i32 {
    if let Some(code) = status.code() {
        return code;
    }

    #[cfg(unix)]
    {
        use std::os::unix::process::ExitStatusExt;
        if let Some(signal) = status.signal() {
            return 128 + signal;
        }
    }

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/utils/pty/src/process.rs:28 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/0c5f43388930250a. Report an issue: GitHub.