From e943047a1eccf863718c8ab33fa4ba8926dfa9b3 Mon Sep 17 00:00:00 2001
From: "Ioanna M. Dimitriou H" <idimitriou@igalia.com>
Date: Thu, 29 Feb 2024 23:28:28 +0100
Subject: [PATCH] Test parsing error when using unicode escape sequences to
 express i, m, s

As suggested in https://github.com/tc39/test262/pull/3960#issuecomment-1966827213
---
 ...r-modifiers-should-not-unicode-escape-i.js | 19 +++++++++++++++++++
 ...r-modifiers-should-not-unicode-escape-m.js | 19 +++++++++++++++++++
 ...r-modifiers-should-not-unicode-escape-s.js | 19 +++++++++++++++++++
 3 files changed, 57 insertions(+)
 create mode 100644 test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-i.js
 create mode 100644 test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-m.js
 create mode 100644 test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-s.js

diff --git a/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-i.js b/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-i.js
new file mode 100644
index 00000000000..10e1883996f
--- /dev/null
+++ b/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-i.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2024 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Source text cannot use unicode escape sequences to express code points "i", "m", "s" (regular expression flags)
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-modifiers]
+negative:
+  phase: parse
+  type: SyntaxError
+info: |
+    Atom :: ( ? RegularExpresisonFlags : Disjunction )
+    It is a Syntax Error if the source text matched by RegularExpressionFlags contains any code points other than "i", "m", "s", or if it contains the same code point more than once.
+
+---*/
+
+$DONOTEVALUATE();
+
+/(?\u0069:a)/u /* i */;
diff --git a/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-m.js b/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-m.js
new file mode 100644
index 00000000000..4916997fbfa
--- /dev/null
+++ b/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-m.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2024 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Source text cannot use unicode escape sequences to express code points "i", "m", "s" (regular expression flags)
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-modifiers]
+negative:
+  phase: parse
+  type: SyntaxError
+info: |
+    Atom :: ( ? RegularExpresisonFlags : Disjunction )
+    It is a Syntax Error if the source text matched by RegularExpressionFlags contains any code points other than "i", "m", "s", or if it contains the same code point more than once.
+
+---*/
+
+$DONOTEVALUATE();
+
+/(?\u006D:a)/u /* m */;
diff --git a/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-s.js b/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-s.js
new file mode 100644
index 00000000000..4e91d5bb51b
--- /dev/null
+++ b/test/language/literals/regexp/early-err-modifiers-should-not-unicode-escape-s.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2024 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Source text cannot use unicode escape sequences to express code points "i", "m", "s" (regular expression flags)
+esid: sec-patterns-static-semantics-early-errors
+features: [regexp-modifiers]
+negative:
+  phase: parse
+  type: SyntaxError
+info: |
+    Atom :: ( ? RegularExpresisonFlags : Disjunction )
+    It is a Syntax Error if the source text matched by RegularExpressionFlags contains any code points other than "i", "m", "s", or if it contains the same code point more than once.
+
+---*/
+
+$DONOTEVALUATE();
+
+/(?\u0073:a)/u /* s */;