macOS x86_64: codex-cli 0.142.2 crashes with SIGTRAP/EXC_BREAKPOINT during gpt-5.5 runs

Environment:

• Codex CLI: 0.142.2
• OS: macOS 26.5.1 (25F80)
• Arch: x86_64
• Shell/session: zsh in iTerm2
• Binary: /usr/local/Caskroom/codex/0.142.2/codex-x86_64-apple-darwin

Observed behavior:

• Codex crashes with trace trap
• This happens when using gpt-5.5
• Switching local config to gpt-5.4 appears to avoid the crash

Crash details from macOS diagnostic reports:

• exception: EXC_BREAKPOINT
• signal: SIGTRAP
• termination: Trace/BPT trap: 5

Relevant reports:

• codex-x86_64-apple-darwin-2026-06-26-144836.ips
• codex-x86_64-apple-darwin-2026-06-26-144604.ips

The faulting thread in both reports appears to be inside Codex's embedded V8 runtime during isolate/code-range initialization, with frames like:

• v8::base::OS::SetPermissions
• v8::internal::CodeRange::InitReservation
• v8::internal::Heap::SetUp
• v8::internal::Isolate::Init
• v8::Isolate::New

This does not look like a normal skill/script failure; it looks like the Codex process itself is crashing natively.

This appears related to other trace trap reports around gpt-5.5, but I'm reporting it separately because it is reproducible for me on 0.142.2.