Bun seg faults when running tests

[micahbf]

How can we reproduce the crash?

Unfortunately unable to provide reproduction steps due to private code. However, happy to help troubleshoot and reproduce locally.

Relevant log output

bun test
bun test v1.1.43 (76800b04)
[0.07ms] ".env.test", ".env"

src/assistant/schema.spec.ts:
✓ schema > generates a schema from fields [0.12ms]

src/assistant/prompts.repository.spec.ts:
============================================================
Bun v1.1.43 (76800b04) macOS Silicon
macOS v15.2
Args: "bun" "test"
Features: Bun.stdin(2) bunfig dotenv(2) jsc transpiler_cache(92) tsconfig(118) tsconfig_paths(12) process_dlopen(3)
Builtins: "bun:jsc" "detect-libc" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:console" "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:perf_hooks" "node:process" "node:querystring" "node:readline" "node:stream" "node:string_decoder" "node:timers" "node:tls" "node:tty" "node:url" "node:util" "node:util/types" "node:vm" "node:zlib" "node:worker_threads" "node:punycode" "node-fetch" "node:v8" "node:http2" "node:diagnostics_channel" "node:dgram"
Elapsed: 1592ms | User: 1564ms | Sys: 528ms
RSS: 0.65GB | Peak: 0.65GB | Commit: 0.02ZB | Faults: 57

panic(main thread): Segmentation fault at address 0x5
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/1.1.43/Mt176800b0iC9r/7//B__utyuf_+6hn1C__un3m1Cur880C2/195BA2AK

zsh: trace trap  bun test

Stack Trace (bun.report)

Bun v1.1.43 (76800b0) on macos aarch64 [TestCommand]

Segmentation fault at address 0x00000005

• 2 unknown/js code
• Bun::Process_functionDlopen
• 1 unknown/js code
• jsc_llint_commonCallOp__llintOpWithMetadata__llintOpWithReturn__llintOp__commonOp__fn__fn__makeReturn__fn__fn__fn__684_callHelper__dispatch_LowLevelInterpreter64_asm_2538
• 2 unknown/js code
• jsc_llint_commonCallOp__llintOpWithMetadata__llintOpWithReturn__llintOp__commonOp__fn__fn__makeReturn__fn__fn__fn__666_callHelper__dispatch_LowLevelInterpreter64_asm_2538
• llint_call_javascript
• JSC::Interpreter::executeCall

Features: tsconfig_paths, process_dlopen, Bun.stdin, jsc, transpiler_cache, tsconfig, tsconfig

_{Sentry Issue: BUN-AY9}

[micahbf]

Note: same issue occurs on latest canary (Bun Canary v1.1.43-canary.11 (5e003dc) macOS Silicon)

[DonIsaac]

Hi @micahbf, thanks for reporting this. Are you able to narrow down which expectation, test block, etc. the crash is occuring on? And if so, can you provide some high-level details on what's being called?