1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/syntax-err-arithmetic-modifiers-reverse-should-not-unicode-case-fold-i.js b/js/src/tests/test262/built-ins/RegExp/syntax-err-arithmetic-modifiers-reverse-should-not-unicode-case-fold-i.js
new file mode 100644
index 0000000000..fedb79a4f2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/syntax-err-arithmetic-modifiers-reverse-should-not-unicode-case-fold-i.js
@@ -0,0 +1,19 @@
+// |reftest| skip -- regexp-modifiers is not supported
+// Copyright (C) 2024 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Code points other than "i", "m", "s" should not be case-folded to "i", "m", or "s" (arithmetic regular expression flags)
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-modifiers]
+info: |
+    Atom :: ( ? RegularExpressionFlags - RegularExpressionFlags : Disjunction )
+    ...
+
+---*/
+
+assert.throws(SyntaxError, function () {
+  RegExp("(?İ-:a)", "iu");
+}, 'RegExp("(?İ-:a)", "iu"): ');
+
+reportCompare(0, 0);