Fails when run on Webkit using Vitest with playwright

[Enduriel]

I'm trying to test the package I create using this crate on all 3 major browsers using playwright, but unfortunately with a minimal code sample

import init, { initThreadPool } from "./wasm_rayon_webkit_error.js";
import { expect, test } from "vitest";

console.log("Initializing WASM...");
await init();
console.log("WASM initialized");
await initThreadPool(1);
console.log("Thread poool initialized");

test("example test", () => {
  expect(true).toBe(true);
});

the test fails (only) on webkit with:

 FAIL   webkit  min.test.ts [ min.test.ts ]
Error: Failed to import test file /Users/end/Documents/tmp/wasm-rayon-webkit-error2/web/min.test.ts
Caused by: RuntimeError: Out of bounds memory access (evaluating 'wasm.wbg_rayon_poolbuilder_build(this.__wbg_ptr)')
 ❯ build wasm_rayon_webkit_error.js:102:41
 ❯ startWorkers snippets/wasm-bindgen-rayon-38edf6e439f6d70d/src/workerHelpers.js:106:16

I have created an example repo here. Just run

cd web
npm i
npx playwright install
cd ..
sh wasm-test.sh

and it will install playwright, build the wasm module and run the test. You will see it succeeds on both firefox and chromium, but fails on webkit with the above error.

Let me know if there's any additional context that would be helpful to you. Thank you for this really cool crate and the other stuff you made & contribute to.

[RReverser]

Hi, thanks for the report!

Unfortunately, it's a tricky one - there are somewhat random Safari bugs popping up from time to time with similar symptoms, e.g. wasm-bindgen/wasm-bindgen#4084, but I can see you're using a recent version of wasm-bindgen so it shouldn't be that one in particular.

I don't have access to Safari, but for start you might want to change wasm-pack command to build with --dev so you at least get a meaningful stacktrace.

[Enduriel]

That suggestion is 100% fair (and I envy you not having to deal with safari), I just copy pasted the build script from my project. Unfortunately, the error is (almost, except for where the relevant function is in the file) identical in dev mode:

Error: Failed to import test file /Users/end/Documents/tmp/wasm-rayon-webkit-error/web/min.test.ts
Caused by: RuntimeError: Out of bounds memory access (evaluating 'wasm.wbg_rayon_poolbuilder_build(this.__wbg_ptr)')
 ❯ build wasm_rayon_webkit_error.js:138:41
 ❯ startWorkers snippets/wasm-bindgen-rayon-38edf6e439f6d70d/src/workerHelpers.js:106:16

I've pushed the updated script to the example repo.

Feel free to keep asking me to adjust things and test those tweaks, I'll try and get back to you ASAP.