Bug: git diagnose crashes with Segmentation fault outside of git repository

Thank you for filling out a Git bug report! Please answer the following questions to help us understand your issue.

What did you do before the bug happened? (Steps to reproduce your issue) Run `git diagnose` outside of any git repository

What did you expect to happen? (Expected behavior) No crash, reasonable diagnose output

What happened instead? (Actual behavior) `git diagnose` crashed with Segmentation fault

$ git diagnose Collecting diagnostic info

git version 2.41.0 cpu: x86_64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh Repository root: (null) Available space on '/tmp': 7.75 GiB (mount flags 0x6) Segmentation fault (core dumped)

What's different between what you expected and what actually happened? Segmentation fault, truncated output

Anything else you want to add: `git diagnose` does not crash when run within some git repository

Please review the rest of the bug report below. You can delete any lines you don't wish to share.

[System Info] git version: git version 2.41.0 cpu: x86_64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh uname: Linux 6.5.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Oct 6 19:02:35 UTC 2023 x86_64 compiler info: gnuc: 13.1 libc info: glibc: 2.37 $SHELL (typically, interactive shell): /bin/bash

[Enabled Hooks] not run from a git repository - no hooks to show