Claude Code took a dump

[graf-reiner]

How can we reproduce the crash?

I really cant say, I just asked a question and it crapped out with this error

Relevant log output

Stack Trace (bun.report)

Bun v1.3.1 (89fa0f3) on windows x86_64_baseline [_]

panic: attempt to cast negative value to unsigned integer

• libuv.zig:673: get
• node_fs.zig:5032: readFileWithOptions
• node_fs_binding.zig:31: runSync
• JSCJSValue.h:753: JSC::ensureStillAliveHere

Features: Bun.stderr, Bun.stdin, Bun.stdout, fetch, jsc, spawn, standalone_executable, standalone_executable

_{Sentry Issue: BUN-BRC}

[github-actions]

@graf-reiner, the latest version of Bun is v1.3.2, but this crash was reported on Bun v1.3.1.

Are you able to reproduce this crash on the latest version of Bun?

bun upgrade

[github-actions]

Found 3 possible duplicate issues:

1. preadInner on Windows can run into "attempt to cast negative value to unsigned integer" #24433
2. attempt to cast negative value to unsigned integer (node_fs.zig readFileWithOptions) #22804
3. CRASH BUG: panic(main thread): attempt to cast negative value to unsigned integer #21781

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🤖 Generated with Claude Code

[birkskyum]

@graf-reiner , it would be helpful with a repro, and filling out the normal "issue" template for this repo. I can't see the "Relevant log output" section, and the sentry issue link isn't directing to a public resource.

[graf-reiner]

My appologies, Claude Code spit out the link when it crashed. I have never seen that error before, and it hasnt happened again. I also dont have any other log output. So maybe close this out? Thanks, Graf Reiner

…

On Tue, Nov 11, 2025, 9:31 AM Birk Skyum ***@***.***> wrote: *birkskyum* left a comment (oven-sh/bun#24544) <#24544 (comment)> @graf-reiner <https://github.com/graf-reiner> , it would be helpful with a repro, and filling out the normal "issue" template for this repo. I can't see the "Relevant log output" section, and the sentry issue link isn't directing to a public resource. — Reply to this email directly, view it on GitHub <#24544 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARJMCOVUQF2K663MKGZCSTT34H6NPAVCNFSM6AAAAACLTO53H6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTKMJXGQ3DIMZVGI> . You are receiving this because you were mentioned.Message ID: ***@***.***>