Shell snapshot validation fails on macOS Bash (unexpected token '(') – v0.103.0

What version of Codex CLI is running?

codex-cli 0.103.0

What subscription do you have?

ChatGPT Plus

Which model were you using?

_No response_

What platform is your computer?

Darwin 25.3.0 arm64 arm

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

Terminal.app

What issue are you seeing?

Environment

• macOS (Apple Silicon)
• Bash (Homebrew-installed)
• Codex v0.103.0 (research preview)
• shell_snapshot feature enabled (default)

Issue

Every time codex exec runs, I receive:

ERROR codex_core::shell_snapshot:
Shell snapshot validation failed:
syntax error near unexpected token `('

The referenced snapshot file is immediately deleted,
so it cannot be inspected afterward.

Observations

• .bashrc contains no zsh syntax
• No path=(...), setopt, autoload, etc.
• CODEX_HOME not set (default ~/.codex used)
• Snapshot directory remains empty
• Codex continues functioning normally
• Disabling shell_snapshot in ~/.codex/config.toml resolves the issue

[features]
shell_snapshot = false

### What steps can reproduce the bug?

- Download rtk formulae (Homebrew)
- Remove Claude Hooks 
- Add this function to .bashrc :
                                            cx() { rtk "$@" | codex exec -; }
- Sourced it, and tested it running :
                                             cx git status 



### What is the expected behavior?

In-App Feedback

Sometimes Codex CLI supports:

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Or there's a link in the CLI banner.

If available, use that too.

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Shell snapshotting is:
- A performance optimization
- Environment-dependent
- Complex on macOS due to launchd, Homebrew, env vars, functions

### Additional information

_No response_