In file included from raw_ptr_to_gc_managed_class.cpp:5: ./raw_ptr_to_gc_managed_class.h:14:1: warning: [blink-gc] Class 'PartObject' contains invalid fields. class PartObject { ^ ./raw_ptr_to_gc_managed_class.h:19:5: note: [blink-gc] Raw pointer field 'm_rawObj' to a GC managed class declared here: HeapObject* m_rawObj; ^ ./raw_ptr_to_gc_managed_class.h:20:5: note: [blink-gc] Reference pointer field 'm_refObj' to a GC managed class declared here: HeapObject& m_refObj; ^ ./raw_ptr_to_gc_managed_class.h:23:1: warning: [blink-gc] Class 'HeapObject' contains invalid fields. class HeapObject : public GarbageCollected { ^ ./raw_ptr_to_gc_managed_class.h:29:5: note: [blink-gc] Raw pointer field 'm_objs' to a GC managed class declared here: HeapVector m_objs; ^ 2 warnings generated.