From e6e59f6e8d4eaea596399b66315365480293d6d8 Mon Sep 17 00:00:00 2001
From: Seonghyun Kim <sh8281.kim@samsung.com>
Date: Tue, 16 Jul 2024 10:35:51 +0900
Subject: [PATCH] RegExp.prototype.compile should not accept sub-class of
 RegExp

Signed-off-by: Seonghyun Kim <sh8281.kim@samsung.com>
---
 src/builtins/BuiltinRegExp.cpp          | 4 ++++
 tools/test/test262/excludelist.orig.xml | 1 -
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/builtins/BuiltinRegExp.cpp b/src/builtins/BuiltinRegExp.cpp
index 5233de2c0..c92cda719 100644
--- a/src/builtins/BuiltinRegExp.cpp
+++ b/src/builtins/BuiltinRegExp.cpp
@@ -203,6 +203,10 @@ static Value builtinRegExpCompile(ExecutionState& state, Value thisValue, size_t
     Optional<Object*> proto = thisValue.asObject()->getPrototypeObject(state);
     Context* calleeContext = state.resolveCallee()->codeBlock()->context();
 
+    if (!proto || !proto->isRegExpPrototypeObject()) {
+        ErrorObject::throwBuiltinError(state, ErrorCode::TypeError, ErrorObject::Messages::GlobalObject_ThisNotRegExpObject);
+    }
+
     bool match = false;
     while (proto) {
         Value c = proto->getOwnProperty(state, ObjectPropertyName(state.context()->staticStrings().constructor)).value(state, proto.value());
diff --git a/tools/test/test262/excludelist.orig.xml b/tools/test/test262/excludelist.orig.xml
index 4f57a3d8a..e68130990 100644
--- a/tools/test/test262/excludelist.orig.xml
+++ b/tools/test/test262/excludelist.orig.xml
@@ -31,7 +31,6 @@
     <test id="intl402/NumberFormat/prototype/formatToParts/signDisplay-ko-KR"><reason>ICU 67 returns wrong result with -0.0001</reason></test>
     <test id="intl402/NumberFormat/prototype/formatToParts/signDisplay-zh-TW"><reason>ICU 67 returns wrong result with -0.0001</reason></test>
 
-    <test id="annexB/built-ins/RegExp/prototype/compile/this-subclass-instance"><reason>TODO</reason></test>
     <test id="annexB/language/comments/multi-line-html-close"><reason>TODO</reason></test>
     <test id="annexB/language/eval-code/direct/script-decl-lex-collision-in-sloppy-mode"><reason>TODO</reason></test>
     <test id="annexB/language/function-code/block-decl-func-skip-arguments"><reason>TODO</reason></test>