[Bug libstdc++/91067] [9/10 Regression] Clang compiler can't link executable if std::filesystem::directory_iterator is encountered

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91067

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There are also some recursive_directory_iterator symbols missing. This fails
even compiled with GCC:

#include <filesystem>
int main()
{
  std::filesystem::recursive_directory_iterator d;
  d = d;
}