trace_if_needed.cpp:9:1: warning: [blink-gc] Class 'TemplatedObject<cppgc::internal::BasicMember<blink::HeapObject, cppgc::internal::StrongMemberTag, cppgc::internal::WriteBarrierPolicyImpl, cppgc::internal::CheckingPolicyImpl, cppgc::internal::StorateTypeImpl>>' has untraced fields that require tracing.
template <typename T>
^
./trace_if_needed.h:21:5: note: [blink-gc] Untraced field 'm_two' declared here:
    T m_two;
    ^
1 warning generated.