runtime: SIGSEGV in node buffer.resolveObjectURL / object-URL test

[proggeramlug]

Summary

SIGSEGV (exit 139) running test/js/node/buffer-resolveObjectURL.test.ts from Bun's suite. Pre-existing — reproduces on a clean main build, unrelated to any recent blob-handle work.

Repro

The full file crashes. The basic flow works in isolation:

import { Blob, resolveObjectURL } from "buffer";
const blob = new Blob(["hello"]);
const id = URL.createObjectURL(blob);
resolveObjectURL(id);   // ok, size 5

Not yet minimized to one line — the crash emerges from the full multi-test() file, which additionally exercises new Blob() (empty), object-URL id mutation, resolveObjectURL()/(1)/("foo") with invalid args, and await blob.text().

Also observed (conformance, not the crash)

A resolved blob is not instanceof Blob and otherBlob.constructor !== Blob.

Found via running Bun's own test suite through perry.