1 In file included from non_virtual_trace.cpp:5: 2 ./non_virtual_trace.h:12:1: warning: [blink-gc] Left-most base class 'A' of derived class 'D' must define a virtual trace method. 3 class A : public GarbageCollected<A> { 4 ^ 5 non_virtual_trace.cpp:13:1: warning: [blink-gc] Class 'C' overrides non-virtual trace of base class 'A'. 6 void C::trace(Visitor* visitor) 7 ^ 8 ./non_virtual_trace.h:14:5: note: [blink-gc] Non-virtual trace method declared here: 9 void trace(Visitor*); 10 ^ 11 non_virtual_trace.cpp:18:1: warning: [blink-gc] Class 'D' overrides non-virtual trace of base class 'A'. 12 void D::trace(Visitor* visitor) 13 ^ 14 ./non_virtual_trace.h:14:5: note: [blink-gc] Non-virtual trace method declared here: 15 void trace(Visitor*); 16 ^ 17 3 warnings generated. 18
