From ec2c16fefa8b98efaa1ccf84f18eea0a12c1c9ef Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Mon, 30 Jan 2023 22:20:29 +0200
Subject: fix `assert()` crash (#1941)

---
 test/bun.js/buffer.test.js | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test/bun.js')

diff --git a/test/bun.js/buffer.test.js b/test/bun.js/buffer.test.js
index 1971fed8c..d1ed5a496 100644
--- a/test/bun.js/buffer.test.js
+++ b/test/bun.js/buffer.test.js
@@ -2813,3 +2813,11 @@ test("Buffer.byteLength", () => {
     );
   }
 });
+
+it("should not crash on invalid UTF-8 byte sequence", () => {
+  const buf = Buffer.from([0xC0, 0xFD]).toString();
+  expect(buf.length).toBe(2);
+  const str = buf.toString();
+  expect(str.length).toBe(2);
+  expect(str).toBe("\uFFFD\uFFFD");
+});
-- 
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