Bun crashes when performing fs.createReadStream in express app

[ridhwaans]

How can we reproduce the crash?

1) create a /src/index.ts with the following express app

import express from 'express';
import fs from 'fs';

const app = express();
const router = express.Router();

router.get('/', (req, res) => {
  res.send('Hello World');
});

router.get('/video', async (req, res) => {
  // call  this readStream method https://gist.github.com/paolorossi/1993068
});

app.use(router);

const PORT = 3004;
app.listen(PORT, () => {
  console.log(`Listening on http://localhost:${PORT}`);
});

2) Create a bun dev command

"dev": "bun --watch run src/index.ts"

3) Run bun dev and go to localhost:3004/video

Expected the a html video element to play the video.
Instead the backend crashes with the logged output below.
Hard to say if it is a issue with the headers or file

It also crashes sometimes when videoRef.current.currentTime is scrubbed on the client

const videoRef = useRef<HTMLVideoElement>(null)

Relevant log output

error

panic(main thread): A C++ exception occurred
oh no: Bun has crashed. This indicates a bug in Bun, not your code.
...
error: script "dev" was terminated by signal SIGILL (Illegal instruction)

Stack Trace (bun.report)

Bun v1.1.10 (5102a94) on linux x86_64 [AutoCommand]

panic: A C++ exception occurred

• bindings.zig:1901: Zig__GlobalObject__onCrash

[github-actions[bot]]

@ridhwaans, the latest version of Bun is v1.1.27, but this crash was reported on Bun v1.1.10.

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

bun upgrade

[ridhwaans]

updated to 1.1.27 and the issue persists

[Jarred-Sumner]

Unfortunately, we will need a complete reproduction that ideally includes the video file for us to reproduce this.

[github-actions[bot]]

Hello @ridhwaans. Please provide a minimal reproduction using a GitHub repository, Replit, or CodeSandbox. Issues marked with needs repro will be closed if they have no activity within 3 days.

[ridhwaans]

@Jarred-Sumner

# https://github.com/ridhwaans/test-express/
git clone git@github.com:ridhwaans/test-express.git

unfortunately i cannot share the file due to copyright issue

it might be a codec issue, probably can test different files in the public domain