From d5c3a0e53abfafcac539527f0799aa541abe2ec5 Mon Sep 17 00:00:00 2001
From: Timothy Flynn <trflynn89@pm.me>
Date: Thu, 31 Oct 2024 12:23:09 -0400
Subject: [PATCH] LibWeb: Do not store resize observer sizes in a plain vector

---
 .../Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp
index 9e7e3ff97b4..2910248a069 100644
--- a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp
+++ b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp
@@ -76,9 +76,10 @@ void ResizeObserverEntry::visit_edges(JS::Cell::Visitor& visitor)
 
 static JS::NonnullGCPtr<JS::Object> to_js_array(JS::Realm& realm, Vector<JS::NonnullGCPtr<ResizeObserverSize>> const& sizes)
 {
-    Vector<JS::Value> vector;
+    JS::MarkedVector<JS::Value> vector(realm.heap());
     for (auto const& size : sizes)
         vector.append(JS::Value(size.ptr()));
+
     auto array = JS::Array::create_from(realm, vector);
     MUST(array->set_integrity_level(JS::Object::IntegrityLevel::Frozen));
     return array;