False positive: warning #1125: function ${A} is hidden by function ${B}

struct A {
 private:
  virtual void foo() {}  // Side-info: template-method pattern in the real code.
};

struct B : public A {
 private:
  void foo(int) {}
};

The warning is stating that A::foo is hidden by B::foo.

A::foo() is private and cannot be called from B, anyway.

The warning does not happen if A::foo is not virtual.

The compiler version is icpc (ICC) 17.0.1 20161005.