In file included from traceimpl_overloaded_error.cpp:5:
./traceimpl_overloaded_error.h:27:3: warning: [blink-gc] Class 'InlinedBase' has untraced fields that require tracing.
  void traceImpl(VisitorDispatcher visitor) {
  ^
./traceimpl_overloaded_error.h:31:3: note: [blink-gc] Untraced field 'x_base_' declared here:
  Member<X> x_base_;
  ^
./traceimpl_overloaded_error.h:43:3: warning: [blink-gc] Base class 'InlinedBase' of derived class 'InlinedDerived' requires tracing.
  void traceImpl(VisitorDispatcher visitor) {
  ^
./traceimpl_overloaded_error.h:43:3: warning: [blink-gc] Class 'InlinedDerived' has untraced fields that require tracing.
./traceimpl_overloaded_error.h:47:3: note: [blink-gc] Untraced field 'x_derived_' declared here:
  Member<X> x_derived_;
  ^
traceimpl_overloaded_error.cpp:18:1: warning: [blink-gc] Class 'ExternBase' has untraced fields that require tracing.
inline void ExternBase::traceImpl(VisitorDispatcher visitor) {
^
./traceimpl_overloaded_error.h:59:3: note: [blink-gc] Untraced field 'x_base_' declared here:
  Member<X> x_base_;
  ^
traceimpl_overloaded_error.cpp:31:1: warning: [blink-gc] Base class 'ExternBase' of derived class 'ExternDerived' requires tracing.
inline void ExternDerived::traceImpl(VisitorDispatcher visitor) {
^
traceimpl_overloaded_error.cpp:31:1: warning: [blink-gc] Class 'ExternDerived' has untraced fields that require tracing.
./traceimpl_overloaded_error.h:71:3: note: [blink-gc] Untraced field 'x_derived_' declared here:
  Member<X> x_derived_;
  ^
6 warnings generated.