## Bug Report Claude CLI exits immediately after the latest update with no output. **Version:** `claude 1.x.x` **OS:** Ubuntu 22.04 LTS **Shell:** zsh ### Steps to reproduce 1. Run `claude` in a new terminal 2. Observe immediate exit — no prompt, no error message ### Expected CLI opens an interactive session. ### Actual Process exits with code 139 (SIGSEGV). `dmesg` shows segfault at address 0x0. **Additional context** This started after upgrading. Rolling back fixes it. The crash is 100%

[BB-POC] Bug: claude CLI segfaults on startup (triage 20260701_140650)

Status Closed — not planned

Maintainer reply None cached

Activity 1 comment · opened Jul 1, 2026 · closed Aug 19, 2026

Claude CLI exits immediately after the latest update with no output.

Version: claude 1.x.x
OS: Ubuntu 22.04 LTS
Shell: zsh

CLI opens an interactive session.

Process exits with code 139 (SIGSEGV). dmesg shows segfault at address 0x0.

Additional context
This started after upgrading. Rolling back fixes it. The crash is 100% reproducible.