#include <vector>

struct A
{
 void f() const
 {
   std::vector<int> v_s;

   for (const auto& s : v_) {
     v_s.emplace_back(s);
   }
 }

  std::vector<int> v_;
};

This was reduced from a much bigger class where the variable was actually filled.

If I make both members static or implement it with a function and a global warning the warning is being reported.

Tested with version 11.0.1.