LibJS: Verify that objects are only initialized once

We already do this in a couple of other places, we wouldn't ever want to re-assign already initialized constructor and prototype objects.
Author: https://github.com/linusg Commit: https://github.com/SerenityOS/serenity/commit/7762c1ac61 Pull-request: https://github.com/SerenityOS/serenity/pull/16939 Reviewed-by: https://github.com/trflynn89 ✅
2023-01-10 00:11:24 +00:00 · 2023-01-10 00:11:24 +00:00 · 7762c1ac61 · 2024-07-17 06:29:49 +09:00
commit 7762c1ac61
parent 63136615d2
1 changed files with 2 additions and 0 deletions
--- a/Userland/Libraries/LibJS/Runtime/Intrinsics.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intrinsics.cpp
@ -267,6 +267,8 @@ JS_ENUMERATE_TYPED_ARRAYS
    {                                                                                                                                                    \
        auto& vm = this->vm();                                                                                                                           \
                                                                                                                                                         \
+        VERIFY(!m_##snake_namespace##snake_name##_prototype);                                                                                            \
+        VERIFY(!m_##snake_namespace##snake_name##_constructor);                                                                                          \
        if constexpr (IsTypedArrayConstructor<Namespace::ConstructorName>) {                                                                             \
            m_##snake_namespace##snake_name##_prototype = heap().allocate<Namespace::PrototypeName>(m_realm, *typed_array_prototype());                  \
            m_##snake_namespace##snake_name##_constructor = heap().allocate<Namespace::ConstructorName>(m_realm, m_realm, *typed_array_constructor());   \