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// PR c++/21340 struct Base{}; struct Iterator : virtual Base {}; bool operator==(const Iterator&, const Iterator&); struct IteratorI : Iterator {}; struct Obj { bool operator==(const Obj&) const; }; template <int>bool dummy() { Obj lhs, rhs; return lhs == rhs; } int main(int argc, char** argv) { IteratorI* it2 = new IteratorI(); }