From 7c9314b06b55662f030482f602a2ce48e68e11c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Bargull?= <andre.bargull@gmail.com>
Date: Mon, 12 May 2025 15:57:59 +0200
Subject: [PATCH] Add coverage for odd string lengths in
 Uint8Array.prototype.setFromHex

V8 doesn't handle this correctly for zero length typed arrays.
---
 .../throws-when-string-length-is-odd.js       | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 test/built-ins/Uint8Array/prototype/setFromHex/throws-when-string-length-is-odd.js

diff --git a/test/built-ins/Uint8Array/prototype/setFromHex/throws-when-string-length-is-odd.js b/test/built-ins/Uint8Array/prototype/setFromHex/throws-when-string-length-is-odd.js
new file mode 100644
index 0000000000..d62f4d4073
--- /dev/null
+++ b/test/built-ins/Uint8Array/prototype/setFromHex/throws-when-string-length-is-odd.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2025 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-uint8array.prototype.setfromhex
+description: >
+  Throws a SyntaxError when the string length is odd.
+info: |
+  Uint8Array.prototype.setFromHex ( string )
+
+  ...
+  7. Let result be FromHex(string, byteLength).
+  ...
+  13. If result.[[Error]] is not none, then
+    a. Throw result.[[Error]].
+  ...
+
+  FromHex ( string [ , maxLength ] )
+
+  ...
+  5. If length modulo 2 is not 0, then
+    a. Let error be a new SyntaxError exception.
+    b. Return the Record { [[Read]]: read, [[Bytes]]: bytes, [[Error]]: error }.
+  ...
+
+features: [TypedArray, uint8array-base64]
+---*/
+
+var zeroLength = new Uint8Array(0);
+
+assert.throws(SyntaxError, function() {
+  zeroLength.setFromHex("1")
+}, "Uint8Array has length 0");
+
+
+var nonZeroLength = new Uint8Array(1);
+
+assert.throws(SyntaxError, function() {
+  nonZeroLength.setFromHex("1")
+}, "Uint8Array has length >0");