False positive noConstructor on inner struct of template class specialization

[Sylvain Joubert]

I'm not sure what happens. Maybe a is wrongly assigned to the inner class. Note that if Inner has a default implementation and is not forward declared, the warning still appears, as long as it is specialized afterward.

❯ cppcheck --version
Cppcheck 2.11

❯ cat test.cpp 
template <typename T>
class Test
{
public:
  Test();
  int& get() { return a; }

private:
  struct Inner; // or struct Inner {};

  int& a;
};

template <>
struct Test<int>::Inner
{
};

❯ cppcheck --enable=style --std=c++20 test.cpp 
Checking test.cpp ...
test.cpp:2:1: style: The class 'Inner' does not declare a constructor although it has private member variables which likely require initialization. [noConstructor]
class Test
^

[CHR]

https://trac.cppcheck.net/ticket/11841