1 fields_require_tracing.cpp:9:1: warning: [blink-gc] Class 'PartObject' has untraced fields that require tracing. 2 void PartObject::trace(Visitor* visitor) { 3 ^ 4 ./fields_require_tracing.h:19:5: note: [blink-gc] Untraced field 'm_obj1' declared here: 5 Member<HeapObject> m_obj1; 6 ^ 7 ./fields_require_tracing.h:21:5: note: [blink-gc] Untraced field 'm_obj3' declared here: 8 Member<HeapObject> m_obj3; 9 ^ 10 fields_require_tracing.cpp:15:1: warning: [blink-gc] Class 'HeapObject' has untraced fields that require tracing. 11 void HeapObject::trace(Visitor* visitor) { 12 ^ 13 ./fields_require_tracing.h:28:5: note: [blink-gc] Untraced field 'm_part' declared here: 14 PartObject m_part; 15 ^ 16 2 warnings generated. 17