False positive uninitMemberVar with std template specializations

[Frank Winklmeier]

Having a member variable named hash seems to clash with template specializations of std::hash. The following snippet

struct Foo {};

namespace std {
  template<>
  struct hash<Foo> {};
}

struct Bar
{
  Bar(int the_hash) : hash(the_hash) {}
  int hash;
};

results in

test.cxx:10:3: warning: Member variable 'Bar::hash' is not initialized in the constructor. [uninitMemberVar]
  Bar(int the_hash) : hash(the_hash) {}
  ^

If you rename the member to e.g. _hash the warning disappears. The same happens for other template specializatons, e.g. std::size and a member variable named size.

[Frank Winklmeier]

Here is another reproducer that may or may not be the same problem:

template <class T>
struct Foo
{
  Foo() = default;
  void store ();
};


template <class T>
void Foo<T>::store()
{}

Foo<int> foo;
void* store = nullptr;

results in cppcheck complaining about a non-existent store member:

test.cxx:4:3: warning: Member variable 'Foo < int >::store' is not initialized in the constructor. [uninitMemberVar]
  Foo() = default;
  ^

[CHR]

Thanks for reporting, see https://trac.cppcheck.net/ticket/13443 and https://trac.cppcheck.net/ticket/13444