[BUG] issue in claude code in vscode extension

Preflight Checklist

• [x] I have searched existing issues 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?

Args: "c:\Users\m.khairy\.vscode\extensions\anthropic.claude-code-2.1.89-win32-x64\resources\native-binary\claude.exe" "--output-format" "stream-json" "--verbose" "--input-format" "stream-json" "--max-thinking-tokens" "31999"...
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) abort_signal(9) fetch(10) jsc spawn(13) standalone_executable yaml_parse
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:stream/consumers" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "ws" "node:http2"
Elapsed: 15892ms | User: 703ms | Sys: 562ms
RSS: 0.41GB | Peak: 0.43GB | Commit: 0.60GB | Faults: 111218 | Machine: 33.74GB

panic(thread 31564): Segmentation fault at address 0xCC

panic: Segmentation fault at address 0xC8
panicked during a panic. Aborting.

2026-04-01 13:33:11.759 [info] Closing Claude on channel: thzay4hevao
2026-04-01 13:33:11.760 [error] Error from Claude (on channel thzay4hevao): Error: Claude Code process exited with code 3
2026-04-01 13:33:24.441 [info] Received message from webview: {"type":"request","requestId":"aj2erwinqp","request":{"type":"open_output_panel"}}

What Should Happen?

Args: "c:\Users\m.khairy\.vscode\extensions\anthropic.claude-code-2.1.89-win32-x64\resources\native-binary\claude.exe" "--output-format" "stream-json" "--verbose" "--input-format" "stream-json" "--max-thinking-tokens" "31999"...
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) abort_signal(9) fetch(10) jsc spawn(13) standalone_executable yaml_parse
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:stream/consumers" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "ws" "node:http2"
Elapsed: 15892ms | User: 703ms | Sys: 562ms
RSS: 0.41GB | Peak: 0.43GB | Commit: 0.60GB | Faults: 111218 | Machine: 33.74GB

panic(thread 31564): Segmentation fault at address 0xCC

panic: Segmentation fault at address 0xC8
panicked during a panic. Aborting.

2026-04-01 13:33:11.759 [info] Closing Claude on channel: thzay4hevao
2026-04-01 13:33:11.760 [error] Error from Claude (on channel thzay4hevao): Error: Claude Code process exited with code 3
2026-04-01 13:33:24.441 [info] Received message from webview: {"type":"request","requestId":"aj2erwinqp","request":{"type":"open_output_panel"}}

Error Messages/Logs

Args: "c:\Users\m.khairy\.vscode\extensions\anthropic.claude-code-2.1.89-win32-x64\resources\native-binary\claude.exe" "--output-format" "stream-json" "--verbose" "--input-format" "stream-json" "--max-thinking-tokens" "31999"...
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) abort_signal(9) fetch(10) jsc spawn(13) standalone_executable yaml_parse 
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:stream/consumers" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "ws" "node:http2" 
Elapsed: 15892ms | User: 703ms | Sys: 562ms
RSS: 0.41GB | Peak: 0.43GB | Commit: 0.60GB | Faults: 111218 | Machine: 33.74GB

panic(thread 31564): Segmentation fault at address 0xCC

panic: Segmentation fault at address 0xC8
panicked during a panic. Aborting.

2026-04-01 13:33:11.759 [info] Closing Claude on channel: thzay4hevao
2026-04-01 13:33:11.760 [error] Error from Claude (on channel thzay4hevao): Error: Claude Code process exited with code 3
2026-04-01 13:33:24.441 [info] Received message from webview: {"type":"request","requestId":"aj2erwinqp","request":{"type":"open_output_panel"}}

Steps to Reproduce

Args: "c:\Users\m.khairy\.vscode\extensions\anthropic.claude-code-2.1.89-win32-x64\resources\native-binary\claude.exe" "--output-format" "stream-json" "--verbose" "--input-format" "stream-json" "--max-thinking-tokens" "31999"...
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) abort_signal(9) fetch(10) jsc spawn(13) standalone_executable yaml_parse
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:stream/consumers" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "ws" "node:http2"
Elapsed: 15892ms | User: 703ms | Sys: 562ms
RSS: 0.41GB | Peak: 0.43GB | Commit: 0.60GB | Faults: 111218 | Machine: 33.74GB

panic(thread 31564): Segmentation fault at address 0xCC

panic: Segmentation fault at address 0xC8
panicked during a panic. Aborting.

2026-04-01 13:33:11.759 [info] Closing Claude on channel: thzay4hevao
2026-04-01 13:33:11.760 [error] Error from Claude (on channel thzay4hevao): Error: Claude Code process exited with code 3
2026-04-01 13:33:24.441 [info] Received message from webview: {"type":"request","requestId":"aj2erwinqp","request":{"type":"open_output_panel"}}

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.89 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_