Codex CLI 0.141.0 crashes with SIGTRAP on Intel macOS when executing tools

What version of the Codex CLI is running?

0.141.0

What subscription do you have?

Plus

Which model were you using?

gpt-5.5

What platform is your computer?

macOS 12.7.6 (Intel x86_64)

What terminal emulator and version are you using (if applicable)?

Apple Terminal 445.1

Codex doctor report

{
  "overallStatus": "ok",
  "codexVersion": "0.141.0",
  "checks": {
    "runtime.provenance": { "status": "ok", "install method": "standalone", "platform": "macos-x86_64" },
    "auth.credentials": { "status": "ok", "stored ChatGPT tokens": "true" },
    "config.load": { "status": "ok", "feature flags enabled": "29" },
    "network.websocket_reachability": { "status": "warn", "handshake result": "HTTP 401 Unauthorized" },
    "sandbox.helpers": { "status": "ok" }
  }
}

What issue are you seeing?

Codex CLI 0.141.0 crashes with zsh: trace trap codex (SIGTRAP / EXC_BREAKPOINT) on Intel macOS when the agent executes tools.

Observed behavior:

• TUI starts and accepts input
• Short read-only prompts succeed
• Crash happens when tool execution begins (e.g., shell commands, file writes)
• codex doctor reports installation and runtime as healthy
• Crash signature consistently shows EXC_BREAKPOINT / SIGTRAP / Trace/BPT trap: 5

Steps to reproduce:

1. Install Codex CLI 0.141.0 on Intel macOS (standalone installer)
2. Run codex
3. Ask a prompt that requires tool execution (e.g., create or edit a file)
4. Process aborts with zsh: trace trap codex

Additional context:

• Reproduces with both the standalone installer and npm install
• Reproduces outside VS Code and in a clean terminal
• Reproduces after resetting ~/.codex
• 0.140.0 does not exhibit this crash on the same hardware/OS combination
• Looks related to V8 isolate initialization in tool execution on x86_64