duplInheritedMember false positive

[Igor Krivenko]

Hello,

I would like to report what appears to be a duplInheritedMember false positive related to the final virtual function specifier.

#include <memory>

namespace ns {

template<typename T>
struct Base {
  virtual std::unique_ptr<Base> clone() const = 0;
};

struct Derived : public Base<int> {
  std::unique_ptr<Base<int>> clone() const final {
    return std::make_unique<Derived>(*this);
  }
};

}

$ cppcheck --enable=warning --std=c++17 --verbose issue.hpp
issue.hpp:11:30: warning: The struct 'Derived' defines member function with name 'clone' also defined in its parent struct 'Base < int >'. [duplInheritedMember]
  std::unique_ptr<Base<int>> clone() const final {
                             ^
issue.hpp:7:33: note: Parent function 'Base < int >::clone'
  virtual std::unique_ptr<Base> clone() const = 0;
                                ^
issue.hpp:11:30: note: Derived function 'Derived::clone'
  std::unique_ptr<Base<int>> clone() const final {

Weirdly enough, the warning goes away if I remove the namespace from the example. Making the base class non-templated or changing final to override makes it disappear as well.

Version info:
cppcheck built from sources (d0a02bb)

[CHR]

Thanks for reporting, ticket is here: https://trac.cppcheck.net/ticket/12374

[Steve Albright]

I have encountered the same issue.