[BUG]

### Preflight Checklist

- [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code

### What's Wrong?

Bun v1.4.0 (fdb5e06cc) Windows x64
Windows v10.19045
CPU: sse42 avx avx2
Args: "\AppData\Roaming\Claude\claude-code\2.1.237\claude.exe" "--output-format" "stream-json" "--verbose" "--input-format" "stream-json" "--effort" "xhigh" "--model" "claude-sonnet-5" "--permission-prompt-tool" "std"...
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) jsc spawn(2) standalone_executable claude_code
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:crypto" "node:dns/promises" "node:events" "node:fs" "node:fs/promises" "node:http" "node:http2" "node:https" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:readline" "node:stream" "node:stream/consumers" "node:stream/promises" "node:string_decoder" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib"
Elapsed: 438ms | User: 281ms | Sys: 187ms
RSS: 0.40 GB | Peak: 0.40 GB | Commit: 4.53 GB | Faults: 101796 | Machine: 8.47 GB
panic(main thread): Segmentation fault at address 0x7FF6AB8BD000
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/1.4.0///Bhg4wu0C

### What Should Happen?

Claude Code should run without crashing" or "The process should complete successfully without a segmentation fault.

### Error Messages/Logs

```shell

```

### Steps to Reproduce

Launched Claude Code 2.1.237 on Windows 10 tried to continue a chat.

### Claude Model

Not sure / Multiple models

### Is this a regression?

Yes, this worked in a previous version

### Last Working Version

_No response_

### Claude Code Version

2.1.238

### Platform

Anthropic API

### Operating System

Windows

### Terminal/Shell

VS Code integrated terminal

### Additional Information

_No response_

Start by reproducing Claude Code 2.1.237 and 2.1.238 on Windows 10 x64 from the VS Code integrated terminal while continuing a chat. Review the Bun crash report at bun.report/1.4.0 and compare the reported runtime details; done means Claude Code completes successfully without a segmentation fault.

Written by the indexing model from the issue text.