[Bug] Segmentation fault in Bun runtime on Windows during Claude Code execution

[JulesBrookfield]

Bug Description
I just ran into this issue while running claude code:
Bun v1.3.1 (89fa0f34) Windows x64 (baseline)
Windows v.win11_dt
CPU: sse42 avx avx2 avx512
Args: "C:\Users\Jules.B.local\bin\claude.exe"
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) fetch(46) jsc spawn(88) standalone_executable
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:domain"
"node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/win32"
"node:perf_hooks" "node:process" "node:querystring" "node:stream" "node:string_decoder" "node:timers/promises" "node:tls" "node:tty"
"node:url" "node:util" "node:zlib" "node:worker_threads" "undici" "ws" "node-fetch" "node:inspector" "node:http2"
"node:diagnostics_channel"
Elapsed: 17949ms | User: 2156ms | Sys: 921ms
RSS: 0.65GB | Peak: 0.75GB | Commit: 0.69GB | Faults: 284883 | Machine: 67.76GB

panic(main thread): Segmentation fault at address 0xFFFFFFFFFFFFFFFF
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:

https://bun.report/1.3.1/e_189fa0f3Az/7v//Bgmum0B6vsm0Byns7IomjoG29losBq7qwFmybwnLou/y3DCYKERNEL32.DLLut0LCSntdll.dll4zijBA2DD

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.0.36
• Feedback ID: 4f01f9c4-ed10-48f9-abfc-3479a8296c60

Errors

[]

[JulesBrookfield]

This is a very small project folder, just a few markdown files and excel files. It's crashed 3 times like this on me already. One time was just starting a new session and running "/init".

[github-actions]

Found 3 possible duplicate issues:

1. Segmentation fault crash on Windows 11 in VS Code extension v2.0.29+ (Bun v1.3.1 runtime crash) #11201
2. Segmentation Fault in Main Thread During Runtime #6591
3. [BUG] Bun crashes leads to Claude Code crashing #10021

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
• To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #11201.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.