LibWeb: Move setting of Web object prototypes to initialize()

This needs to happen before prototype/constructor intitialization can be
made lazy. Otherwise, GC could run during the C++ constructor and try to
collect the object currently being created.

2 files changed, 8 insertions, 1 deletions

diff --git a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
index ec4522deeb..e14bf17609 100644
--- a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
+++ b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
@@ -23,11 +23,16 @@ JS::NonnullGCPtr<IntersectionObserver> IntersectionObserver::construct_impl(JS::
 IntersectionObserver::IntersectionObserver(JS::Realm& realm)
     : PlatformObject(realm)
 {
-    set_prototype(&Bindings::cached_web_prototype(realm, "IntersectionObserver"));
 }
 
 IntersectionObserver::~IntersectionObserver() = default;
 
+void IntersectionObserver::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::IntersectionObserverPrototype>(realm, "IntersectionObserver"));
+}
+
 // https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-observe
 void IntersectionObserver::observe(DOM::Element& target)
 {
diff --git a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h
index 82b73a443f..326385ed1e 100644
--- a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h
+++ b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h
@@ -32,6 +32,8 @@ public:
 
 private:
     explicit IntersectionObserver(JS::Realm&);
+
+    virtual void initialize(JS::Realm&) override;
 };
 
 }